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Document and Entity Information - shares	9 Months Ended
Document and Entity Information - shares	Sep. 30, 2012	Nov. 02, 2012
Document and Entity Information [Abstract]
Entity Registrant Name	BankUnited, Inc.
Entity Central Index Key	0001504008
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Document Type	10-Q
Document Period End Date	Sep. 30, 2012
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Common Stock Shares Outstanding		94,460,463
Entity Well Known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes

CONSOLIDATED BALANCE SHEETS - UNAUDITED - USD ($) $ in Thousands	Sep. 30, 2012	Dec. 31, 2011
Cash and due from banks:
Non-interest bearing	$ 50,642	$ 39,894
Interest bearing	22,983	13,160
Interest bearing deposits at Federal Reserve Bank	270,068	247,488
Federal funds sold	2,950	3,200
Cash and cash equivalents	346,643	303,742
Investment securities available for sale, at fair value (including covered securities of $229,179 and $232,194)	4,783,646	4,181,977
Non-marketable equity securities	145,723	147,055
Loans held for sale	6,412	3,952
Loans (including covered loans of $2,043,635 and $2,422,811)	5,301,481	4,137,058
Allowance for loan and lease losses	(60,416)	(48,402)
Loans, net	5,241,065	4,088,656
FDIC indemnification asset	1,628,511	2,049,151
Bank owned life insurance	206,638	204,077
Other real estate owned, covered by loss sharing agreements	89,221	123,737
Deferred tax asset, net	80,957	19,485
Goodwill and other intangible assets	69,955	68,667
Other assets	149,655	131,539
Total assets	12,748,426	11,322,038
Demand deposits:
Non-interest bearing	1,232,365	770,846
Interest bearing	499,917	453,666
Savings and money market	4,000,199	3,553,018
Time	2,725,382	2,587,184
Total deposits	8,457,863	7,364,714
Short-term borrowings	621	206
Federal Home Loan Bank advances and other borrowings	2,218,695	2,236,131
Income taxes payable	5,116	53,171
Advance payments by borrowers for taxes and insurance	44,645	21,838
Other liabilities	268,759	110,698
Total liabilities	10,995,699	9,786,758
Commitments and contingencies
Stockholders' equity:
Common stock, par value $0.01 per share, 400,000,000 shares authorized; 94,472,538 and 97,700,829 shares issued and outstanding	945	977
Preferred stock, par value $0.01 per share, 100,000,000 shares authorized; 5,415,794 shares of Series A issued and outstanding at September 30, 2012	54	0
Paid-in capital	1,304,263	1,240,068
Retained earnings	372,542	276,216
Accumulated other comprehensive income	74,923	18,019
Total stockholders' equity	1,752,727	1,535,280
Total liabilities and stockholders' equity	$ 12,748,426	$ 11,322,038

CONSOLIDATED BALANCE SHEETS - UNAUDITED (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2012	Dec. 31, 2011
ASSETS
Covered Securities	$ 229,179	$ 232,194
Covered Loans	$ 2,043,635	$ 2,422,811
Stockholders' equity:
Common Stock, par value (in Dollars per share)	$ 0.01	$ 0.01
Common Stock, shares authorized (in Shares)	400,000,000	400,000,000
Common Stock, shares issued (in Shares)	94,472,538	97,700,829
Common Stock, shares outstanding (in Shares)	94,472,538	97,700,829
Series A Preferred Stock, par value (in Dollars per share)	$ 0.01
Series A Preferred Stock, shares authorized (in Shares)	100,000,000
Series A Preferred Stock, shares issued (in Shares)	5,415,794
Series A Preferred stock, shares outstanding (in Shares)	5,415,794

CONSOLIDATED STATEMENTS OF INCOME - UNAUDITED - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Interest income:
Loans	$ 137,039	$ 133,649	$ 415,957	$ 370,543
Investment securities available for sale	32,149	28,984	99,247	90,770
Other	1,117	522	3,306	2,145
Total interest income	170,305	163,155	518,510	463,458
Interest expense:
Deposits	16,459	18,437	50,466	57,767
Borrowings	14,429	15,920	45,021	47,244
Total interest expense	30,888	34,357	95,487	105,011
Net interest income before provision for (recovery of) loan losses	139,417	128,798	423,023	358,447
Provision for (recovery of) loan losses (including $1,021, $(6,379), $1,137 and $(2,805) for covered loans)	6,374	1,252	17,866	9,816
Net interest income after provision for (recovery of) loan losses	133,043	127,546	405,157	348,631
Non-interest income:
Accretion of discount on FDIC indemnification asset	3,432	10,804	14,513	45,247
Income from resolution of covered assets, net	17,517	4,702	39,602	7,068
Net gain (loss) on indemnification asset	(14,199)	(777)	(26,602)	36,857
FDIC reimbursement of costs of resolution of covered assets	3,566	5,859	13,415	24,600
Service charges and fees	3,095	2,730	9,440	8,062
Gain on sale of investment securities available for sale, net	6,035	1,112	6,931	1,215
Mortgage insurance income	2,571	4,143	8,910	12,228
Investment services income	1,044	1,645	3,267	6,160
Other non-interest income	2,623	2,537	14,272	8,438
Total non-interest income	25,684	32,755	83,748	149,875
Non-interest expense:
Employee compensation and benefits	41,968	41,350	132,544	232,020
Occupancy and equipment	13,725	9,879	38,776	26,275
Impairment of other real estate owned	1,385	4,037	7,980	21,823
Foreclosure expense	3,060	3,859	9,671	14,386
(Gain) loss on sale of other real estate owned	(1,410)	2,865	(1,499)	27,339
Other real estate owned expense	1,756	2,188	5,193	9,120
Deposit insurance expense	2,040	134	5,136	6,652
Professional fees	3,850	5,468	11,452	12,204
Telecommunications and data processing	3,379	2,951	9,730	9,817
Other non-interest expense	7,469	7,021	25,388	20,344
Total non-interest expense	77,222	79,752	244,371	379,980
Income before income taxes	81,505	80,549	244,534	118,526
Provision for income taxes	31,948	34,996	95,776	96,638
Net income	49,557	45,553	148,758	21,888
Preferred stock dividends	921	0	2,762	0
Net income available to common stockholders	$ 48,636	$ 45,553	$ 145,996	$ 21,888
Earnings per common share, basic (see Note 2) (in Dollars per share)	$ 0.48	$ 0.45	$ 1.45	$ 0.21
Earnings per common share, diluted (see Note 2) (in Dollars per share)	0.48	0.45	1.44	0.20
Cash dividends declared per common share (in Dollars per share)	$ 0.17	$ 0.14	$ 0.51	$ 0.42

CONSOLIDATED STATEMENTS OF INCOME - UNAUDITED (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Interest expense:
Provision for (recovery of) loan losses (including provision for covered loans)	$ 1,021	$ (6,379)	$ 1,137	$ (2,805)

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - UNAUDITED - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Consolidated Statements of Comprehensive Income
Net income	$ 49,557	$ 45,553	$ 148,758	$ 21,888
Unrealized gains (losses) on investment securities available for sale:
Net unrealized holding gains (losses) arising during the period	26,888	(4,369)	61,746	3,688
Reclassification adjustment for net securities gains realized in income	(3,707)	(684)	(4,257)	(747)
Net change in unrealized gains on securities available for sale	23,181	(5,053)	57,489	2,941
Unrealized losses on derivative instruments:
Net unrealized holding loss arising during the period	(3,630)	(15,131)	(8,828)	(23,708)
Reclassification adjustment for net losses realized in income	2,786	2,975	8,243	8,791
Net change in unrealized losses on derivative instruments	(844)	(12,156)	(585)	(14,917)
Other comprehensive income (loss)	22,337	(17,209)	56,904	(11,976)
Comprehensive income	$ 71,894	$ 28,344	$ 205,662	$ 9,912

CONSOLIDATED STATEMENTS OF CASH FLOWS - UNAUDITED - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Cash flows from operating activities:
Net income	$ 148,758	$ 21,888
Adjustments to reconcile net income to net cash used in operating activities:
Accretion of fair values of assets acquired and liabilities assumed	(340,305)	(351,509)
Amortization of fees, discounts and premiums, net	9,966	(3,116)
Provision for loan losses	17,866	9,816
Accretion of discount on FDIC indemnification asset	(14,513)	(45,247)
Income from resolution of covered assets, net	(39,602)	(7,068)
Net (gain) loss on indemnification asset	26,602	(36,857)
Net gain on sale of loans	(698)	(403)
Increase in cash surrender value of bank owned life insurance	(2,561)	(2,887)
Gain on sale of investment securities available for sale	(6,931)	(1,215)
(Gain) loss on sale of other real estate owned	(1,499)	27,339
Equity based compensation	20,503	135,744
Depreciation and amortization	10,636	5,333
Impairment of other real estate owned	7,980	21,823
Deferred income taxes	(85,191)	34,368
Proceeds from sale of loans held for sale	32,922	22,095
Loans originated for sale, net of repayments	(29,975)	(21,175)
Realized tax benefits from dividend equivalents and equity based compensation	(954)	(433)
Gain on acquisition	(5,288)	0
Other:
(Increase) decrease in other assets	(1,538)	991
Increase (decrease) in other liabilities	(32,562)	7,369
Net cash used in operating activities	(286,384)	(183,144)
Cash flows from investing activities:
Net cash paid in business combination	(1,626)	0
Purchase of investment securities available for sale	(1,017,933)	(1,452,980)
Proceeds from repayments of investment securities available for sale	478,117	407,595
Proceeds from sale of investment securities available for sale	256,609	199,843
Maturities and calls of investment securities available for sale	71,123	162
Purchase of non-marketable equity securities	(34,652)	0
Proceeds from redemption of non-marketable equity securities	38,270	51,861
Purchases of loans	(501,608)	(254,732)
Loan originations, repayments and resolutions, net	(124,236)	251,691
Decrease in FDIC indemnification asset for claims filed	408,551	641,900
Purchase of bank owned life insurance	0	(22,016)
Bank owned life insurance proceeds	0	77,721
Purchase of office properties and equipment, net	(23,695)	(26,640)
Proceeds from sale of other real estate owned	151,089	282,836
Net cash provided by (used in) investing activities	(299,991)	157,241
Cash flows from financing activities:
Net increase (decrease) in deposits	658,060	(208,941)
Additions to Federal Home Loan Bank advances and other borrowings	1,470,000	0
Repayments of Federal Home Loan Bank advances and other borrowings	(1,475,388)	0
Increase (decrease) in short-term borrowings	415	(208)
Settlement of FDIC warrant liability	0	(25,000)
Increase in advances from borrowers for taxes and insurance	22,203	22,955
Issuance of common stock	0	98,620
Dividends paid	(49,867)	(41,914)
Realized tax benefits from dividend equivalents and equity based compensation	954	433
Exercise of stock options	2,899	270
Net cash provided by (used in) financing activities	629,276	(153,785)
Net increase (decrease) in cash and cash equivalents	42,901	(179,688)
Cash and cash equivalents, beginning of period	303,742	564,774
Cash and cash equivalents, end of period	346,643	385,086
Supplemental disclosure of cash flow information:
Interest paid on deposits and borrowings	110,459	125,461
Income taxes paid	228,064	30,626
Supplemental schedule of non-cash investing and financing activities:
Transfers from loans to other real estate owned	123,054	250,308
Assets received in satisfaction of loans	4,772	0
Dividends declared, not paid	17,486	14,631
Reclassification of PIU liability to equity	0	44,964
Rescission of surrender of bank owned life insurance	0	20,846
Acquisition of assets under capital lease	555	0
Unsettled securities trades	135,713	112,731
Exchange of common stock for Series A preferred stock	54	0
Equity consideration issued in business combination	$ 39,861	$ 0

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - UNAUDITED - USD ($) $ in Thousands	Total	Common Stock Outstanding [Member]	Preferred Stock Outstanding [Member]	Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]
Balance at Dec. 31, 2010	$ 1,253,508	$ 930	$ 0	$ 950,831	$ 269,781	$ 31,966
Balance (in Shares) at Dec. 31, 2010		92,971,850	0
Comprehensive income	9,912	$ 0	$ 0	0	21,888	(11,976)
Equity consideration issued in acquisition	0
Proceeds from issuance of common stock net of direct costs of $3,979	98,620	$ 42	$ 0	98,578	0	0
Proceeds from issuance of common stock net of direct costs of $3,979 (in Shares)		4,000,000	0
Dividends	(42,545)	$ 0	$ 0	0	(42,545)	0
Reclassification of PIU liability to equity	44,964	0	0	44,964	0	0
Equity based compensation	135,744	$ 1	$ 0	135,743	0	0
Equity based compensation (in Shares)		284,960	0
Exercise of stock options	270	$ 0	$ 0	270	0	0
Exercise of stock options (in Shares)		26,095	0
Tax benefits from dividend equivalents and equity based compensation	433	$ 0	$ 0	433	0	0
Balance at Sep. 30, 2011	1,500,906	$ 973	$ 0	1,230,819	249,124	19,990
Balance (in Shares) at Sep. 30, 2011		97,282,905	0
Balance at Dec. 31, 2011	$ 1,535,280	$ 977	$ 0	1,240,068	276,216	18,019
Balance (in Shares) at Dec. 31, 2011	97,700,829	97,700,829	0
Comprehensive income	$ 205,662	$ 0	$ 0	0	148,758	56,904
Exchange of common shares for preferred shares	0	$ (54)	$ 54	0	0	0
Exchange of common shares for preferred shares (in Shares)		(5,415,794)	5,415,794
Equity consideration issued in acquisition	$ 39,861	$ 17	$ 0	39,844	0	0
Equity consideration issued in acquisition (in Shares)	1,676,060	1,676,060	0
Proceeds from issuance of common stock net of direct costs of $3,979 (in Shares)	33,350,000
Dividends	$ (52,432)	$ 0	$ 0	0	(52,432)	0
Reclassification of PIU liability to equity	0
Equity based compensation	20,503	$ 3	$ 0	20,500	0	0
Equity based compensation (in Shares)		309,548	0
Exercise of stock options	2,899	$ 2	$ 0	2,897	0	0
Exercise of stock options (in Shares)		201,895	0
Tax benefits from dividend equivalents and equity based compensation	954	$ 0	$ 0	954	0	0
Balance at Sep. 30, 2012	$ 1,752,727	$ 945	$ 54	$ 1,304,263	$ 372,542	$ 74,923
Balance (in Shares) at Sep. 30, 2012	94,472,538	94,472,538	5,415,794

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) $ in Thousands	9 Months Ended
	Sep. 30, 2011 USD ($)
Consolidated Statements Of Stockholders' Equity - Unaudited
Proceeds from issuance of common stock, net of direct costs	$ 3,979

Basis of Presentation

9 Months Ended

Sep. 30, 2012

Basis of Presentation [Abstract]

Basis of Presentation

Note 1 Basis of Presentation and Recent Accounting Pronouncements

Basis of Presentation

BankUnited, Inc. (“BankUnited, Inc.” or “BKU”) is a bank holding company with three wholly-owned subsidiaries: BankUnited, National Association (“BankUnited”), Herald National Bank (“Herald”), and BankUnited Investment Services, Inc. (collectively, the “Company”). BankUnited, a national banking association headquartered in Miami Lakes, Florida, provides a full range of banking and related services to individual and corporate customers through 96 branches located in 15 Florida counties. Herald is a national banking association with 2 branch locations in the New York metropolitan area.

On May 21, 2009, BankUnited acquired substantially all of the assets and assumed all of the non-brokered deposits and substantially all of the other liabilities of BankUnited, FSB from the Federal Deposit Insurance Corporation (“FDIC”) in a transaction referred to as the “FSB Acquisition.” In connection with the FSB Acquisition, BankUnited entered into Loss Sharing Agreements with the FDIC (“Loss Sharing Agreements”) that cover single family residential mortgage loans, commercial real estate, commercial and industrial and consumer loans, certain investment securities and other real estate owned (“OREO”), collectively referred to as the “covered assets.” Pursuant to the terms of the Loss Sharing Agreements, the covered assets are subject to a stated loss threshold whereby the FDIC will reimburse BankUnited for 80% of losses up to $4.0 billion and 95% of losses in excess of this amount, beginning with the first dollar of loss incurred.

The accompanying unaudited consolidated financial statements have been prepared in accordance with generally accepted accounting principles for interim financial information and the instructions to Form 10-Q and Article 10 of Regulation S-X of the Securities and Exchange Commission (the “SEC”). Accordingly, they do not include all of the information and footnotes required for a fair presentation of financial position, results of operations and cash flows in conformity with U.S. generally accepted accounting principles (“GAAP”) and should be read in conjunction with the Company’s consolidated financial statements and the notes thereto appearing in BKU’s Annual Report on Form 10-K for the year ended December 31, 2011 filed with the SEC. In the opinion of management, all adjustments, consisting of normal recurring adjustments, considered necessary for a fair presentation have been included. Operating results for the nine months ended September 30, 2012 are not necessarily indicative of the results that may be expected in future periods.

In preparing the consolidated financial statements, management is required to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses as well as disclosures of contingent assets and liabilities. Management has made significant estimates in certain areas, such as the allowance for loan and lease losses, the amount and timing of expected cash flows from covered assets and the FDIC indemnification asset, the valuation of OREO, the valuation of deferred tax assets, the value of equity based compensation, the evaluation of investment securities for other than-temporary impairment and the fair values of financial instruments. Actual results could differ from these estimates.

The Company’s presentation of other comprehensive income has been revised retrospectively to comply with newly applicable guidance requiring that the components of net income and other comprehensive income be presented either in a single statement of comprehensive income or in two separate but consecutive statements. Previously, the components of other comprehensive income were presented in the consolidated statements of stockholders’ equity.

Certain amounts for the prior period have been reclassified to conform to the current period presentation.

Recent Accounting Pronouncements

In October 2012, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update No. 2012-06, “Subsequent Accounting for an Indemnification Asset Recognized at the Acquisition Date as a Result of a Government-Assisted Acquisition of a Financial Institution.” The amendments in this update clarify the applicable guidance for subsequently measuring an indemnification asset recognized as a result of a government-assisted acquisition of a financial institution. The update provides that changes in cash flowsexpected to be collected on the indemnification asset arising subsequent to initial recognition as a result of changes in cash flows expected to be collected on the related indemnified assets should be accounted for on the same basis as the change in the assets subject to indemnification. Any amortization of changes in value should be limited to the contractual term of the indemnification agreement. The Company is required to adopt this update prospectively for the quarter ending March 31, 2013. Management is currently evaluating the impact of the update on the Company’s consolidated financial position, results of operations and cash flows but does not anticipate that the impact of adoption will be material.

Earnings per Share

9 Months Ended

Sep. 30, 2012

Earnings per Share [Abstract]

Earnings per Share

Note 2 Earnings Per Share

Basic earnings per common share is calculated by dividing income allocated to common stockholders for basic earnings per common share by the weighted average number of common shares outstanding for the period, reduced by average unvested stock awards. Unvested stock awards and stock option awards with non-forfeitable rights to dividends or dividend equivalents, whether paid or unpaid, and participating preferred stock are considered participating securities and are included in the computation of basic earnings per common share using the two class method. Diluted earnings per common share is computed by dividing income allocated to common stockholders for basic earnings per common share, adjusted for earnings reallocated from participating securities, by the weighted average number of common shares outstanding for the period increased for the dilutive effect of unexercised stock options, warrants and unvested stock awards using the treasury stock method and by the dilutive effect of convertible preferred stock using the if-converted method.

The computation of basic and diluted earnings per common share is presented below (in thousands except share and per share data):

	Three Months Ended September 30,						Nine Months Ended September 30,
	2012			2011			2012			2011
Basic earnings per common share:
Numerator:
Net income	$	49,557		$	45,553		$	148,758		$	21,888
Preferred stock dividends	(921		)	—			(2,762		)	—
Net income available to common stockholders	48,636			45,553			145,996			21,888
Distributed and undistributed earnings allocated to participating securities	(3,536		)	(2,267		)	(10,505		)	(2,359		)
Income allocated to common stockholders for basic earnings per common share	$	45,100		$	43,286		$	135,491		$	19,529
Denominator:
Weighted average common shares outstanding	94,196,429			97,265,095			94,856,763			96,712,972
Less average unvested stock awards	(746,934		)	(1,272,726		)	(1,184,068		)	(1,454,811		)
Weighted average shares for basic earnings per common share	93,449,495			95,992,369			93,672,695			95,258,161
Basic earnings per common share	$	0.48		$	0.45		$	1.45		$	0.21
Diluted earnings per common share:
Numerator:
Income allocated to common stockholders for basic earnings per common share	$	45,100		$	43,286		$	135,491		$	19,529
Adjustment for earnings reallocated from participating securities	2,615			1			15			—
Income used in calculating diluted earnings per common share	$	47,715		$	43,287		$	135,506		$	19,529
Denominator:
Average shares for basic earnings per common share	93,449,495			95,992,369			93,672,695			95,258,161
Dilutive effect of stock options and preferred shares	5,613,427			93,938			187,582			137,744
Weighted average shares for diluted earnings per common share	99,062,922			96,086,307			93,860,277			95,395,905
Diluted earnings per common share	$	0.48		$	0.45		$	1.44		$	0.20

For the three and nine months ended September 30, 2012 and 2011, the following potentially dilutive securities were outstanding but excluded from the calculation of diluted earnings per common share because their inclusion would have been anti-dilutive:

	Three Months Ended September 30,		Nine Months Ended September 30,
	2012	2011	2012	2011
Unvested shares	973,322	1,250,832	973,322	1,250,832
Stock options and warrants	6,963,394	4,534,970	6,963,394	4,534,970
Convertible preferred shares	—	—	5,415,794	—

Acquisition Activity

9 Months Ended

Sep. 30, 2012

Acquisition Activity [Abstract]

Acquisition Activity

Note 3 Acquisition Activity

On February 29, 2012, BKU completed the acquisition of Herald for a purchase price of $65.0 million consisting of cash of $25.2 million, 1,676,060 shares of common stock valued at $38.6 million and stock options and warrants valued at $1.2 million. Common stock issued was valued at the closing price of BKU common stock at the acquisition date. The options and warrants were valued using a Black-Scholes option pricing model. The acquisition of Herald was determined to be a business combination and was accounted for using the acquisition method of accounting; accordingly, the assets acquired and liabilities assumed were recorded at their estimated fair values at the acquisition date. The acquisition of Herald allowed the Company to expand its banking operations to the New York metropolitan area.The following table summarizes the estimated fair values of assets acquired and liabilities assumed (in thousands):

Assets:
Cash and cash equivalents	$	23,538
Investment securities available for sale	160,971
Loans	305,954
Deferred tax asset, net	12,023
Intangible assets	1,780
Other assets	4,141
Total assets	508,407
Liabilities:
Deposits	435,500
Other liabilities	2,594
Total liabilities	438,094
Estimated fair value of net assets acquired	70,313
Consideration issued	65,025
Excess of fair value of net assets acquired over consideration issued	$	5,288

The Company recognized a gain of $5.3 million on the acquisition of Herald, representing the excess of the fair value of net assets acquired over the value of consideration issued. Pursuant to the terms of the merger agreement between BKU and Herald, the determination of the final purchase price was dependent on the price of BKU’s common stock for the ten trading days preceding the merger. A decline in the stock price between the execution of the agreement and consummation of the acquisition led to this gain, which is included in the consolidated statement of income line item “other non-interest income” for the nine months ended September 30, 2012. Transaction costs related to the acquisition of Herald totaled $3.2 million, of which $0.9 million and $1.3 million are included in the consolidated statement of income line item “professional fees” for the nine months ended September 30, 2012 and 2011, respectively. The results of operations of Herald have been included in the Company’s consolidated financial statements from the date of acquisition and are not material. Financial statements of Herald and pro forma financial information are not required to be presented due to the immateriality of this acquisition to the Company’s consolidated financial position and results of operations.

Valuation methodologies used to estimate the fair values of significant assets acquired and liabilities assumed are summarized as follows:

· Loans were valued using a discounted cash flow technique incorporating market based probability of default, loss severity given default, recovery lag and appropriately risk weighted discount rate assumptions.

· Investment securities were valued using the same methodologies employed to estimate the fair value of the Company’s investment securities available for sale summarized in Note 11.

· Demand, savings and money market deposits were valued at the amount due on demand at the valuation date. Time deposits were valued using a discounted cash flow technique incorporating discount rates based on current market rates for deposits with similar maturities.

· Intangible assets consist of a core deposit intangible asset, valued using an after tax cost savings methodology.

The gross contractual amount receivable related to acquired loans was approximately $395.2 million at the acquisition date. The estimated amount not expected to be collected based on probability of default and loss severity given default assumptions applied in estimating fair value was $12.1 million. No loans were specifically identified as impaired at the acquisition date.Deferred tax assets and liabilities were recorded for the tax effects of differences between the tax bases of assets acquired and liabilities assumed and the fair values assigned to those assets and liabilities. The most significant component of the net deferred tax asset was an acquired net operating loss carryforward.

- Definition

The entire disclosure for a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities. The disclosure may include leverage buyout transactions (as applicable).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=7659399&loc=d3e1497-128463

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=7659399&loc=d3e1490-128463

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=7659399&loc=d3e1392-128463

Reference 4: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=7488404&loc=d3e7008-128479

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=7659399&loc=d3e1486-128463

Reference 6: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=7488404&loc=d3e6927-128479

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4845-128472

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=7659399&loc=d3e1500-128463

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=7659399&loc=d3e1524-128463

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
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-URI http://asc.fasb.org/extlink&oid=7488404&loc=d3e7000-128479

Reference 11: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 805
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Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=7488404&loc=d3e6996-128479

Reference 15: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=7659399&loc=d3e1383-128463

Reference 16: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 88-16
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 17: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph F4
-Subparagraph e
-Appendix F

Reference 18: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141
-Paragraph 51, 52
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 19: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 67-73
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Investment Securities Available for Sale

9 Months Ended

Sep. 30, 2012

Investment Securities Available for Sale [Abstract]

Investment Securities Available for Sale

Note 4 Investment Securities Available for Sale

Investment securities available for sale at September 30, 2012 and December 31, 2011 consisted of the following (in thousands):

	September 30, 2012
	Covered Securities									Non-Covered Securities
	Amortized		Gross Unrealized					Fair		Amortized		Gross Unrealized					Fair
	Cost		Gains		Losses			Value		Cost		Gains		Losses			Value

U.S. Treasury and government agency securities	$	—	$	—	$	—		$	—	$	42,506	$	181	$	(1	)	$	42,686
U.S. Government agency and sponsored enterprise residential mortgage-backed securities	—		—		—			—		1,991,320		67,616		(35		)	2,058,901
U.S. Government agency and sponsored enterprise commercial mortgage-backed securities	—		—		—			—		134,467		2,787		—			137,254
Resecuritized real estate mortgage investment conduits (“Re-Remics”)	—		—		—			—		622,967		8,180		(1,067		)	630,080
Private label residential mortgage-backed securities and CMOs	148,857		57,927		(170		)	206,614		276,670		4,880		(98		)	281,452
Private label commercial mortgage-backed securities	—		—		—			—		463,914		20,944		—			484,858
Collateralized loan obligations	—		—		—			—		109,757		489		—			110,246
Non-mortgage asset-backed securities	—		—		—			—		292,189		5,777		(360		)	297,606
Mutual funds and preferred stocks	16,382		102		(510		)	15,974		124,961		8,122		—			133,083
State and municipal obligations	—		—		—			—		23,576		314		(4		)	23,886
Small Business Administration securities	—		—		—			—		339,698		5,217		—			344,915
Other debt securities	3,894		2,697		—			6,591		9,130		370		—			9,500
	$	169,133	$	60,726	$	(680	)	$	229,179	$	4,431,155	$	124,877	$	(1,565	)	$	4,554,467

	December 31, 2011
	Covered Securities									Non-Covered Securities
	Amortized		Gross Unrealized					Fair		Amortized		Gross Unrealized					Fair
	Cost		Gains		Losses			Value		Cost		Gains		Losses			Value

U.S. Government agency and sponsored enterprise residential mortgage-backed securities	$	—	$	—	$	—		$	—	$	1,952,095	$	34,823	$	(1,205	)	$	1,985,713
Re-Remics	—		—		—			—		544,924		4,972		(3,586		)	546,310
Private label residential mortgage-backed securities and CMO’s	165,385		44,746		(310		)	209,821		177,614		1,235		(983		)	177,866
Private label commercial mortgage-backed securities	—		—		—			—		255,868		6,694		—			262,562
Non-mortgage asset-backed securities	—		—		—			—		414,274		2,246		(5,635		)	410,885
Mutual funds and preferred stocks	16,382		491		(556		)	16,317		235,705		3,071		(1,276		)	237,500
State and municipal obligations	—		—		—			—		24,994		278		(2		)	25,270
Small Business Administration securities	—		—		—			—		301,109		2,664		(96		)	303,677
Other debt securities	3,868		2,188		—			6,056		—		—		—			—
	$	185,635	$	47,425	$	(866	)	$	232,194	$	3,906,583	$	55,983	$	(12,783	)	$	3,949,783

At September 30, 2012, investment securities available for sale by contractual maturity, adjusted for anticipated prepayments of mortgage-backed and other pass-through securities are shown below (in thousands):

	Amortized		Fair
	Cost		Value

Due in one year or less	$	822,224	$	857,108
Due after one year through five years	1,932,985		2,012,376
Due after five years through ten years	1,307,818		1,354,308
Due after ten years	395,918		410,797
Mutual funds and preferred stocks with no stated maturity	141,343		149,057
	$	4,600,288	$	4,783,646

Based on the Company’s proprietary model and prepayment assumptions, the estimated weighted average life of the investment portfolio as of September 30, 2012 was 4.2 years. The effective duration of the investment portfolio as ofSeptember 30, 2012 was 1.7 years. The model results are based on assumptions that may differ from actual results.

The carrying value of securities pledged as collateral for Federal Home Loan Bank (“FHLB”) advances, public deposits, interest rate swaps, securities sold under agreements to repurchase and to secure borrowing capacity at the Federal Reserve Bank totaled $1.0 billion and $1.2 billion at September 30, 2012 and December 31, 2011, respectively.

The following table provides information about gains and losses on the sale of investment securities available for sale for the periods indicated (in thousands):

	Three Months Ended September 30,					Nine Months Ended September 30,
	2012		2011			2012			2011

Proceeds from sale of investment securities available for sale	$	117,355	$	130,496		$	256,609		$	199,843

Gross realized gains	$	6,035	$	1,114		$	7,229		$	1,220
Gross realized losses	—		(2		)	(298		)	(5		)
Net realized gain	$	6,035	$	1,112		$	6,931		$	1,215

The following tables present the aggregate fair value and the aggregate amount by which amortized cost exceeded fair value for investment securities in unrealized loss positions at September 30, 2012 and December 31, 2011, aggregated by investment category and length of time that individual securities had been in continuous unrealized loss positions (in thousands):

	September 30, 2012
	Less than 12 Months					12 Months or Greater					Total
	Fair		Unrealized			Fair		Unrealized			Fair		Unrealized
	Value		Losses			Value		Losses			Value		Losses

U.S. Treasury and government agency securities	$	5,000	$	(1	)	$	—	$	—		$	5,000	$	(1	)
U.S. Government agency and sponsored enterprise residential mortgage-backed securities	15,217		(35		)	—		—			15,217		(35		)
Re-Remics	135,659		(600		)	57,813		(467		)	193,472		(1,067		)
Private label residential mortgage-backed securities and CMOs	23,302		(86		)	5,594		(182		)	28,896		(268		)
Non-mortgage asset-backed securities	—		—			41,923		(360		)	41,923		(360		)
Mutual funds and preferred stocks	266		(316		)	15,250		(194		)	15,516		(510		)
State and municipal obligations	1,436		(4		)	—		—			1,436		(4		)
	$	180,880	$	(1,042	)	$	120,580	$	(1,203	)	$	301,460	$	(2,245	)

	December 31, 2011
	Less than 12 Months					12 Months or Greater					Total
	Fair		Unrealized			Fair		Unrealized			Fair		Unrealized
	Value		Losses			Value		Losses			Value		Losses

U.S. Government agency and sponsored enterprise residential mortgage-backed securities	$	211,168	$	(830	)	$	70,049	$	(375	)	$	281,217	$	(1,205	)
Re-Remics	254,826		(3,344		)	19,491		(242		)	274,317		(3,586		)
Private label residential mortgage-backed securities and CMO’s	114,915		(1,120		)	6,469		(173		)	121,384		(1,293		)
Non-mortgage asset-backed securities	221,904		(5,590		)	8,772		(45		)	230,676		(5,635		)
Mutual funds and preferred stocks	77,811		(1,371		)	14,982		(461		)	92,793		(1,832		)
State and municipal obligations	1,002		(2		)	—		—			1,002		(2		)
Small Business Administration securities	29,774		(96		)	—		—			29,774		(96		)
	$	911,400	$	(12,353	)	$	119,763	$	(1,296	)	$	1,031,163	$	(13,649	)

The Company monitors its investment securities available for sale for other than temporary impairment (“OTTI”) on an individual security basis. No securities were determined to be other than temporarily impaired during the three and ninemonths ended September 30, 2012 and 2011. The Company does not intend to sell securities that are in significant unrealized loss positions and it is not more likely than not that the Company will be required to sell these securities before recovery of the amortized cost basis, which may be at maturity. At September 30, 2012, 42 securities were in unrealized loss positions. The amount of impairment related to 12 of these securities was considered insignificant, totaling approximately $30.2 thousand, and no further analysis with respect to these securities was considered necessary. The basis for concluding that impairment of the remaining securities is not other-than-temporary is further described below:

U.S. Government agency and sponsored enterprise residential mortgage-backed securities:

At September 30, 2012, two U.S. Government agency and sponsored enterprise residential mortgage-backed securities were in unrealized loss positions. Both of these securities had been in unrealized loss positions for less than twelve months. The amount of impairment of each of the individual securities was less than 4% of amortized cost. The timely payment of principal and interest on these securities is explicitly or implicitly guaranteed by the U.S. Government. Given the limited severity and duration of impairment and the expectation of timely payment of principal and interest, the impairments are considered to be temporary.

Private label residential mortgage-backed securities and CMOs and Re-Remics:

At September 30, 2012, 19 private label residential mortgage-backed securities and Re-Remics were in unrealized loss positions. These securities were assessed for OTTI using third-party developed credit and prepayment behavioral models and CUSIP level constant default rates, voluntary prepayment rates and loss severity and delinquency assumptions. The results of this evaluation were not indicative of credit losses related to any of these securities as of September 30, 2012. The majority of these securities evidenced unrealized losses less than 2% of amortized cost and had been in unrealized loss positions for less than twelve months. Given the generally limited duration and severity of impairment and the expectation of timely recovery of outstanding principal, the impairments are considered to be temporary.

Non-mortgage asset-backed securities:

At September 30, 2012, five non-mortgage asset-backed securities were in unrealized loss positions. The amount of impairment of each of the individual securities was 2% or less of amortized cost. These securities were assessed for OTTI using a third-party developed credit and prepayment behavioral model and CUSIP level constant default rates, voluntary prepayment rates and loss severity and delinquency assumptions. The results of this evaluation were not indicative of credit losses related to these securities as of September 30, 2012. Given the limited severity of impairment and the expectation of timely recovery of outstanding principal, the impairments are considered to be temporary.

Mutual funds:

At September 30, 2012, one mutual fund investment was in an unrealized loss position and had been in a continuous unrealized loss position for 25 months. The majority of the underlying holdings of the mutual fund are either explicitly or implicitly guaranteed by the U.S. Government. The unrealized loss related to this security is approximately 1% of its cost basis and the security has experienced a partial recovery in value over the past 2 quarters. Given the limited severity, the impairment is considered to be temporary.

Preferred stocks:

At September 30, 2012, three positions in agency preferred stock were in unrealized loss positions. These securities traded above the Company’s cost basis during the past 3 months. Given the limited duration, this impairment is considered to be temporary.

- Definition

The entire disclosure for investments in certain debt and equity securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-Glossary Debt Security
-URI http://asc.fasb.org/extlink&oid=6509901

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
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-URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27290-111563

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-Glossary Equity Security
-URI http://asc.fasb.org/extlink&oid=6511694

Reference 5: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 320
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-Name Accounting Standards Codification
-Topic 942
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-Name Accounting Standards Codification
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Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27161-111563

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
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-URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27405-111563

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 115
-Paragraph 3, 19, 20, 21, 22, 137
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Loans and Allowance for Loan and Lease Losses

9 Months Ended

Sep. 30, 2012

Loans and Allowance for Loan Losses [Abstract]

Loans and Allowance for Loan Losses

Note 5 Loans and Allowance for Loan and Lease Losses

A significant portion of the Company’s loan portfolio consists of loans acquired in the FSB Acquisition. Substantially all of these loans are covered under BankUnited’s Loss Sharing Agreements (the “covered loans”). Loans originated or purchased since the FSB Acquisition (“new loans”) are not covered by the Loss Sharing Agreements. Covered loans may be further segregated between those acquired with evidence of deterioration in credit quality since origination (“Acquired Credit Impaired” or “ACI” loans) and those acquired without evidence of deterioration in credit quality since origination (“non-ACI” loans).

At September 30, 2012 and December 31, 2011, loans consisted of the following (dollars in thousands):

	September 30, 2012
	Covered Loans						Non-Covered Loans								Percent of
	ACI			Non-ACI			ACI		New Loans			Total			Total
Residential:
1-4 single family residential	$	1,458,170		$	99,795		$	—	$	806,440		$	2,364,405		44.4	%
Home equity loans and lines of credit	58,478			161,365			—		2,108			221,951			4.2	%
	1,516,648			261,160			—		808,548			2,586,356			48.6	%
Commercial:
Multi-family	57,787			735			—		303,476			361,998			6.8	%
Commercial real estate	179,432			2,478			4,123		646,941			832,974			15.7	%
Construction	2,690			—			—		43,840			46,530			0.9	%
Land	16,193			157			—		27,240			43,590			0.8	%
Commercial loans and leases	16,031			14,799			—		1,393,979			1,424,809			26.8	%
	272,133			18,169			4,123		2,415,476			2,709,901			51.0	%
Consumer	2,395			—			—		17,398			19,793			0.4	%
Total loans	1,791,176			279,329			4,123		3,241,422			5,316,050			100.0	%
Premiums, discounts and deferred fees and costs, net	—			(26,870		)	—		12,301			(14,569		)
Loans net of premiums, discounts, deferred fees and costs	1,791,176			252,459			4,123		3,253,723			5,301,481
Allowance for loan and lease losses	(9,922		)	(10,865		)	—		(39,629		)	(60,416		)
Loans, net	$	1,781,254		$	241,594		$	4,123	$	3,214,094		$	5,241,065

	December 31, 2011
	Covered Loans						Non-Covered Loans								Percent of
	ACI			Non-ACI			ACI		New Loans			Total			Total
Residential:
1-4 single family residential	$	1,681,866		$	117,992		$	—	$	461,431		$	2,261,289		54.1	%
Home equity loans and lines of credit	71,565			182,745			—		2,037			256,347			6.1	%
	1,753,431			300,737			—		463,468			2,517,636			60.2	%
Commercial:
Multi-family	61,710			791			—		108,178			170,679			4.1	%
Commercial real estate	219,136			32,678			4,220		311,434			567,468			13.6	%
Construction	4,102			—			—		23,252			27,354			0.7	%
Land	33,018			163			—		7,469			40,650			1.0	%
Commercial loans and leases	24,007			20,382			—		799,978			844,367			20.2	%
	341,973			54,014			4,220		1,250,311			1,650,518			39.6	%
Consumer	2,937			—			—		3,372			6,309			0.2	%
Total loans	2,098,341			354,751			4,220		1,717,151			4,174,463			100.0	%
Premiums, discounts and deferred fees and costs, net	—			(30,281		)	—		(7,124		)	(37,405		)
Loans net of premiums, discounts, deferred fees and costs	2,098,341			324,470			4,220		1,710,027			4,137,058
Allowance for loan and lease losses	(16,332		)	(7,742		)	—		(24,328		)	(48,402		)
Loans, net	$	2,082,009		$	316,728		$	4,220	$	1,685,699		$	4,088,656

At September 30, 2012 and December 31, 2011, the unpaid principal balance (“UPB”) of ACI loans was $4.6 billion and $5.3 billion, respectively.

During the three and nine months ended September 30, 2012 and 2011, the Company purchased 1-4 single family residential loans totaling $159.9 million, $501.6 million, $97.1 million, and $254.7 million, respectively.

At September 30, 2012, the Company had pledged real estate loans with UPB of approximately $5.0 billion and carrying amounts of approximately $2.8 billion as security for FHLB advances.

Activity in the allowance for loan and lease losses (“ALLL”) is summarized as follows (in thousands):

	For the Three Months Ended
	September 30, 2012											September 30, 2011
	Residential			Commercial			Consumer		Total			Residential			Commercial			Consumer		Total
Beginning balance	$	16,331		$	39,270		$	34	$	55,635		$	13,177		$	43,422		$	40	$	56,639
Provision for (recovery of) loan losses:
ACI loans	—			(867		)	—		(867		)	(3,689		)	(1,855		)	—		(5,544		)
Non-ACI loans	1,863			25			—		1,888			(2,561		)	1,726			—		(835		)
New loans	752			4,536			65		5,353			2,542			4,862			227		7,631
Total provision	2,615			3,694			65		6,374			(3,708		)	4,733			227		1,252
Charge-offs:
ACI loans	—			(296		)	—		(296		)	—			(2,300		)	—		(2,300		)
Non-ACI loans	(851		)	(181		)	—		(1,032		)	(329		)	(248		)	—		(577		)
New loans	—			(578		)	—		(578		)	—			(179		)	—		(179		)
Total charge-offs	(851		)	(1,055		)	—		(1,906		)	(329		)	(2,727		)	—		(3,056		)
Recoveries:
Non-ACI loans	25			106			—		131			6			216			—		222
New loans	—			182			—		182			—			1			—		1
Total recoveries	25			288			—		313			6			217			—		223
Ending balance	$	18,120		$	42,197		$	99	$	60,416		$	9,146		$	45,645		$	267	$	55,058

	For the Nine Months Ended
	September 30, 2012											September 30, 2011
	Residential			Commercial			Consumer		Total			Residential			Commercial			Consumer		Total
Beginning balance	$	10,175		$	38,176		$	51	$	48,402		$	28,649		$	29,656		$	55	$	58,360
Provision for (recovery of) loan losses:
ACI loans	—			(3,649		)	—		(3,649		)	(18,488		)	10,225			—		(8,263		)
Non-ACI loans	6,505			(1,719		)	—		4,786			(1,777		)	7,235			—		5,458
New loans	4,164			12,519			46		16,729			2,705			9,704			212		12,621
Total provision	10,669			7,151			46		17,866			(17,560		)	27,164			212		9,816
Charge-offs:
ACI loans	—			(2,761		)	—		(2,761		)	—			(10,742		)	—		(10,742		)
Non-ACI loans	(2,751		)	(321		)	—		(3,072		)	(1,963		)	(1,082		)	—		(3,045		)
New loans	—			(1,694		)	—		(1,694		)	—			(794		)	—		(794		)
Total charge-offs	(2,751		)	(4,776		)	—		(7,527		)	(1,963		)	(12,618		)	—		(14,581		)
Recoveries:
ACI loans	—			—			—		—			—			1,212			—		1,212
Non-ACI loans	27			1,382			—		1,409			20			216			—		236
New loans	—			264			2		266			—			15			—		15
Total recoveries	27			1,646			2		1,675			20			1,443			—		1,463
Ending balance	$	18,120		$	42,197		$	99	$	60,416		$	9,146		$	45,645		$	267	$	55,058

Increases (decreases) in the FDIC indemnification asset of $0.9 million and $1.6 million were reflected in non-interest income for the three and nine months ended September 30, 2012, respectively, and $(3.8) million and $(2.9) million for the three and nine months ended September 30, 2011, respectively, related to the provision for (recovery of) loan losses on covered loans, including both ACI and non-ACI loans.

The following table presents information about the balance of the ALLL and related loans as of September 30, 2012 and December 31, 2011 (in thousands):

	September 30, 2012								December 31, 2011
	Residential		Commercial		Consumer		Total		Residential		Commercial		Consumer		Total
Allowance for loan and lease losses:
Ending balance	$	18,120	$	42,197	$	99	$	60,416	$	10,175	$	38,176	$	51	$	48,402
Ending balance: non-ACI and new loans individually evaluated for impairment	$	924	$	1,301	$	—	$	2,225	$	593	$	—	$	—	$	593
Ending balance: non-ACI and new loans collectively evaluated for impairment	$	17,196	$	30,974	$	99	$	48,269	$	9,582	$	21,844	$	51	$	31,477
Ending balance: ACI	$	—	$	9,922	$	—	$	9,922	$	—	$	16,332	$	—	$	16,332
Ending balance: Non-ACI	$	9,923	$	942	$	—	$	10,865	$	6,142	$	1,600	$	—	$	7,742
Ending balance: New loans	$	8,197	$	31,333	$	99	$	39,629	$	4,033	$	20,244	$	51	$	24,328

Loans:
Ending balance (1)	$	2,586,356	$	2,709,901	$	19,793	$	5,316,050	$	2,517,636	$	1,650,518	$	6,309	$	4,174,463
Ending balance: non-ACI and new loans individually evaluated for impairment (1)	$	4,557	$	14,362	$	—	$	18,919	$	1,937	$	6,728	$	—	$	8,665
Ending balance: non-ACI and new loans collectively evaluated for impairment (1)	$	1,065,151	$	2,419,283	$	17,398	$	3,501,832	$	762,268	$	1,297,597	$	3,372	$	2,063,237
Ending balance: ACI loans	$	1,516,648	$	276,256	$	2,395	$	1,795,299	$	1,753,431	$	346,193	$	2,937	$	2,102,561

(1) Ending balance of loans is before premiums, discounts, deferred fees and costs.

Credit quality information

New and non-ACI loans

The tables below present information about new and non-ACI loans identified as impaired as of September 30, 2012 and December 31, 2011. Commercial relationships on non-accrual status with internal risk ratings of substandard or doubtful and with committed balances greater than or equal to $500,000 as well as loans that have been modified in troubled debt restructurings are individually evaluated for impairment. If determined to be impaired, they are reflected as impaired loans in the tables below. Also included in total impaired loans are loans that have been placed on non-accrual status and loans that are 90 days or more delinquent and still accruing for which impairment is measured collectively. These include 1-4 single family residential, home equity, smaller balance commercial and commercial real estate, and consumer loans (in thousands):

	September 30, 2012
	Recorded Investment in Impaired Loans		Unpaid Principal Balance		Related Specific Allowance		Non-Accrual Loans Included in Impaired Loans
New loans:
With no specific allowance recorded:
1-4 single family residential	$	1,352	$	1,389	$	—	$	—
Multi-family	3,663		3,663		—		—
Commercial real estate	1,629		1,629		—		1,629
Land	286		278		—		286
Commercial loans and leases	4,908		4,899		—		3,842
With a specific allowance recorded:
Commercial loans and leases	2,747		2,747		1,227		2,747
Total:
Residential	$	1,352	$	1,389	$	—	$	—
Commercial	13,233		13,216		1,227		8,504
	$	14,585	$	14,605	$	1,227	$	8,504

	December 31, 2011
	Recorded Investment in Impaired Loans		Unpaid Principal Balance		Related Specific Allowance		Non-Accrual Loans Included in Impaired Loans
New loans:
With no specific allowance recorded:
Home equity loans and lines of credit	$	27	$	27	$	—	$	27
Construction	3		3		—		3
Land	332		332		—		332
Commercial loans and leases	2,469		2,469		—		2,469
With a specific allowance recorded:	—		—		—		—
Total:
Residential	$	27	$	27	$	—	$	27
Commercial	2,804		2,804		—		2,804
	$	2,831	$	2,831	$	—	$	2,831

	September 30, 2012
	Recorded Investment in Impaired Loans		Unpaid Principal Balance		Related Specific Allowance		Non-Accrual Loans Included in Impaired Loans
Non-ACI:
With no specific allowance recorded:
1-4 single family residential	$	4,296	$	5,566	$	—	$	4,166
Home equity loans and lines of credit	10,132		10,333		—		10,132
Commercial real estate	105		105		—		105
Commercial loans and leases	1,957		2,139		—		1,900
With a specific allowance recorded:
1-4 single family residential	3,516		4,557		924		330
Commercial loans and leases	3,677		3,677		74		3,677
Total:
Residential	$	17,944	$	20,456	$	924	$	14,628
Commercial	5,739		5,921		74		5,682
	$	23,683	$	26,377	$	998	$	20,310

	December 31, 2011
	Recorded Investment in Impaired Loans		Unpaid Principal Balance		Related Specific Allowance		Non-Accrual Loans Included in Impaired Loans
Non-ACI:
With no specific allowance recorded:
1-4 single family residential	$	7,671	$	9,766	$	—	$	7,296
Home equity loans and lines of credit	10,451		10,670		—		10,451
Commercial real estate	295		295		—		295
Commercial loans and leases	6,695		6,887		—		6,695
With a specific allowance recorded:
1-4 single family residential	1,521		1,937		593		114
Total:
Residential	$	19,643	$	22,373	$	593	$	17,861
Commercial	6,990		7,182		—		6,990
	$	26,633	$	29,555	$	593	$	24,851

Impaired loans include new and non-ACI loans contractually delinquent by 90 days or more and still accruing totaling $1.5 million and $0.4 million at September 30, 2012 and December 31, 2011, respectively.

The following tables summarize new and non-ACI loans that were modified in troubled debt restructurings (“TDRs”) during the three and nine months ended September 30, 2012 and 2011 as well as new and non-ACI loans modified during the twelve months preceding September 30, 2012 and 2011 that experienced payment defaults during the periods indicated (dollars in thousands):

	Three Months Ended September 30, 2012						Three Months Ended September 30, 2011
	Loans Modified in TDRs During the Period			TDRs Experiencing Payment Defaults During the Period			Loans Modified in TDRs During the Period			TDRs Experiencing Payment Defaults During the Period
	Number of TDRs	Recorded Investment		Number of TDRs	Recorded Investment		Number of TDRs	Recorded Investment		Number of TDRs	Recorded Investment
New loans:
Commercial loans and leases	3	$	688	—	$	—	1	$	231	—	$	—
	3	$	688	—	$	—	1	$	231	—	$	—

	Nine Months Ended September 30, 2012						Nine Months Ended September 30, 2011
	Loans Modified in TDRs During the Period			TDRs Experiencing Payment Defaults During the Period			Loans Modified in TDRs During the Period			TDRs Experiencing Payment Defaults During the Period
	Number of TDRs	Recorded Investment		Number of TDRs	Recorded Investment		Number of TDRs	Recorded Investment		Number of TDRs	Recorded Investment
New loans:
Multi-family	1	$	3,663	—	$	—	—	$	—	—	$	—
Commercial loans and leases	6	1,686		1	245		1	231		—	—
	7	$	5,349	1	$	245	1	$	231	—	$	—

	Three Months Ended September 30, 2012						Three Months Ended September 30, 2011
	Loans Modified in TDRs During the Period			TDRs Experiencing Payment Defaults During the Period			Loans Modified in TDRs During the Period			TDRs Experiencing Payment Defaults During the Period
	Number of TDRs	Recorded Investment		Number of TDRs	Recorded Investment		Number of TDRs	Recorded Investment		Number of TDRs	Recorded Investment
Non-ACI:
1-4 single family residential	2	$	248	1	$	121	1	$	66	—	$	—
Commercial loans and leases	1	17		—	—		2	31		—	—
	3	$	265	1	$	121	3	$	97	—	$	—

	Nine Months Ended September 30, 2012						Nine Months Ended September 30, 2011
	Loans Modified in TDRs During the Period			TDRs Experiencing Payment Defaults During the Period			Loans Modified in TDRs During the Period			TDRs Experiencing Payment Defaults During the Period
	Number of TDRs	Recorded Investment		Number of TDRs	Recorded Investment		Number of TDRs	Recorded Investment		Number of TDRs	Recorded Investment
Non-ACI:
1-4 single family residential	4	$	2,072	2	$	294	8	$	786	2	$	183
Commercial real estate	—	—		—	—		1	69		1	69
Commercial loans and leases	2	26		—	—		3	75		1	44
	6	$	2,098	2	$	294	12	$	930	4	$	296

Modifications during the three and nine months ended September 30, 2012 and 2011 included restructuring of the amount and timing of required periodic payments, extensions of maturity and residential modifications under the U.S. Treasury Department’s Home Affordable Modification Program (“HAMP”). Because of the immateriality of the amount of loans modified and nature of the modifications, the modifications did not have a material impact on the Company’s consolidated financial statements or on the determination of the amount of the ALLL for the three and nine months ended September 30, 2012 and 2011.

The following table presents the average recorded investment in impaired new and non-ACI loans for the three and nine months ended September 30, 2012 and 2011 (in thousands):

	Three Months Ended September 30,								Nine Months Ended September 30,
	2012				2011				2012				2011
	New		Non-ACI		New		Non-ACI		New		Non-ACI		New		Non-ACI
Residential:
1-4 single family residential	$	715	$	7,750	$	1,000	$	9,905	$	393	$	8,318	$	500	$	9,528
Home equity loans and lines of credit	—		9,795		—		10,769		7		10,472		—		10,854
	715		17,545		1,000		20,674		400		18,790		500		20,382
Commercial:
Multi-family	4,613		—		—		30		3,228		—		—		192
Commercial real estate	815		134		—		417		407		204		—		357
Construction	2		—		3		—		2		—		2		—
Land	291		—		332		—		313		—		249		—
Commercial loans and leases	6,961		5,670		2,527		10,760		5,586		6,000		2,890		8,530
	12,682		5,804		2,862		11,207		9,536		6,204		3,141		9,079
	$	13,397	$	23,349	$	3,862	$	31,881	$	9,936	$	24,994	$	3,641	$	29,461

Interest income recognized on impaired loans after impairment was not significant for any of the periods presented.

Management considers delinquency status to be the most meaningful indicator of the credit quality of 1-4 single family residential, home equity and consumer loans. Delinquency statistics are updated at least monthly. Internal risk ratings are considered the most meaningful indicator of credit quality for commercial loans. Internal risk ratings are a key factor in identifying loans that are individually evaluated for impairment and impact management’s estimates of loss factors used in determining the amount of the ALLL. Internal risk ratings are updated on a continuous basis. Relationships with balances in excess of $250,000 are re-evaluated at least annually and more frequently if circumstances indicate that a change in risk rating may be warranted. Loans exhibiting potential credit weaknesses that deserve management’s close attention and that if left uncorrected may result in deterioration of the repayment capacity of the borrower are categorized as special mention. Loans with well defined credit weaknesses, including payment defaults, declining collateral values, frequent overdrafts, operating losses, increasing balance sheet leverage, inadequate cash flow, project cost overruns, unreasonable construction delays, past due real estate taxes or exhausted interest reserves, are assigned an internal risk rating of substandard. A loan with a weakness so severe that collection in full is highly questionable or improbable will be assigned an internal risk rating of doubtful.

The following tables summarize key indicators of credit quality for the Company’s new and non-ACI loans as of September 30, 2012 and December 31, 2011. Amounts are net of premiums, discounts, deferred fees and costs (in thousands):

Residential credit exposure, based on delinquency status:

	September 30, 2012				December 31, 2011
	1-4 Single Family Residential		Home Equity Loans and Lines of Credit		1-4 Single Family Residential		Home Equity Loans and Lines of Credit
New loans:
Current	$	816,916	$	2,108	$	450,661	$	1,996
Past due less than 90 days	3,043		—		15,932		14
Past due 90 days or more	1,351		—		—		27
	821,310		2,108		466,593		2,037
Non-ACI:
Current	70,133		142,929		83,075		164,367
Past due less than 90 days	3,090		5,169		2,972		6,807
Past due 90 days or more	3,803		10,132		6,624		7,825
	77,026		158,230		92,671		178,999
	$	898,336	$	160,338	$	559,264	$	181,036

Consumer credit exposure, based on delinquency status:

	September 30, 2012		December 31, 2011
New loans:
Current	$	17,405	$	3,387
Past due less than 90 days	7		10
	$	17,412	$	3,397

Commercial credit exposure, based on internal risk rating:

	September 30, 2012
	Multi-Family		Commercial Real Estate		Construction		Land		Commercial Loans and Leases
New loans:
Pass	$	295,731	$	639,431	$	43,754	$	26,821	$	1,341,764
Special mention	3,122		—		—		—		24,691
Substandard	4,084		6,090		—		286		25,519
Doubtful	—		—		—		—		1,600
	302,937		645,521		43,754		27,107		1,393,574
Non-ACI:
Pass	716		2,372		—		—		7,926
Special mention	—		—		—		—		277
Substandard	11		105		—		157		4,904
Doubtful	—		—		—		—		735
	727		2,477		—		157		13,842
	$	303,664	$	647,998	$	43,754	$	27,264	$	1,407,416

	December 31, 2011
	Multi-Family		Commercial Real Estate		Construction		Land		Commercial Loans and Leases
New loans:
Pass	$	106,010	$	302,278	$	23,086	$	7,115	$	778,069
Special mention	1,000		5,300		—		—		1,440
Substandard	913		2,430		3		332		9,106
Doubtful	—		—		—		—		918
	107,923		310,008		23,089		7,447		789,533
Non-ACI loans:
Pass	757		32,096		—		—		10,550
Special mention	—		287		—		—		1,752
Substandard	17		295		—		164		6,662
Doubtful	—		—		—		—		220
	774		32,678		—		164		19,184
	$	108,697	$	342,686	$	23,089	$	7,611	$	808,717

The following table presents an aging of loans in the new and non-ACI loan portfolios as of September 30, 2012 and December 31, 2011. Amounts are net of premiums, discounts, deferred fees and costs (in thousands):

	September 30, 2012										December 31, 2011
	Current		30 - 59 Days Past Due		60 - 89 Days Past Due		90 Days or More Past Due or in Foreclosure		Total		Current		30 - 59 Days Past Due		60 - 89 Days Past Due		90 Days or More Past Due or in Foreclosure		Total
New loans:
1-4 single family residential	$	816,916	$	3,043	$	—	$	1,351	$	821,310	$	450,661	$	15,790	$	142	$	—	$	466,593
Home equity loans and lines of credit	2,108		—		—		—		2,108		1,996		14		—		27		2,037
Multi-family	302,937		—		—		—		302,937		107,010		913		—		—		107,923
Commercial real estate	643,892		—		—		1,629		645,521		310,008		—		—		—		310,008
Construction	43,754		—		—		—		43,754		23,086		—		—		3		23,089
Land	27,107		—		—		—		27,107		7,115		—		—		332		7,447
Commercial loans and leases	1,380,143		9,418		2,066		1,947		1,393,574		787,611		349		307		1,266		789,533
Consumer	17,405		7		—		—		17,412		3,387		10		—		—		3,397
	$	3,234,262	$	12,468	$	2,066	$	4,927	$	3,253,723	$	1,690,874	$	17,076	$	449	$	1,628	$	1,710,027

Non-ACI:
1-4 single family residential	$	70,133	$	2,289	$	801	$	3,803	$	77,026	$	83,075	$	1,812	$	1,160	$	6,624	$	92,671
Home equity loans and lines of credit	142,929		4,461		708		10,132		158,230		164,367		4,181		2,626		7,825		178,999
Multi-family	727		—		—		—		727		774		—		—		—		774
Commercial real estate	2,477		—		—		—		2,477		32,383		—		—		295		32,678
Land	157		—		—		—		157		164		—		—		—		164
Commercial loans and leases	8,946		94		149		4,653		13,842		13,318		109		—		5,757		19,184
	225,369		6,844		1,658		18,588		252,459		294,081		6,102		3,786		20,501		324,470
	$	3,459,631	$	19,312	$	3,724	$	23,515	$	3,506,182	$	1,984,955	$	23,178	$	4,235	$	22,129	$	2,034,497

ACI Loans

The accretable yield on ACI loans represents the amount by which undiscounted expected future cash flows exceed carrying value. Changes in the accretable yield on ACI loans for the nine months ended September 30, 2012 and the year ended December 31, 2011 were as follows (in thousands):

Balance, December 31, 2010	$	1,833,974
Reclassifications from non-accretable difference	135,933
Accretion	(446,292		)
Balance, December 31, 2011	1,523,615
Reclassifications from non-accretable difference	83,508
Accretion	(321,177		)
Balance, September 30, 2012	$	1,285,946

Accretable yield at September 30, 2012 included expected cash flows of $151.5 million from a pool of 1-4 single family residential loans whose carrying value has been reduced to zero. The UPB of loans remaining in this pool was $313.5 million at September 30, 2012.

ACI loans or loan pools are considered to be impaired when there has been further deterioration in the cash flows expected at acquisition plus any additional cash flows expected to be collected arising from changes in estimates after acquisition, other than due to decreases in interest rate indices and changes in prepayment assumptions. Discount continues to be accreted on ACI loans or pools as long as there are expected future cash flows in excess of the current carrying amount; therefore, these loans are not classified as non-accrual even though they may be contractually delinquent. ACI 1-4 single family residential and home equity loans accounted for in pools are evaluated for impairment on a pool basis and the amount of any impairment is measured based on the expected aggregate cash flows of the pools. ACI commercial and commercial real estate loans are evaluated individually for impairment.

The tables below set forth at September 30, 2012 and December 31, 2011 the carrying amount of ACI loans or pools for which the Company has determined it is probable that it will be unable to collect all the cash flows expected at acquisition plus additional cash flows expected to be collected arising from changes in estimates after acquisition, if any, as well as ACI loans not accounted for in pools that have been modified in troubled debt restructurings, and the related allowance amounts (in thousands):

	September 30, 2012
	Recorded Investment in Impaired Loans or Pools		Unpaid Principal Balance		Related Specific Allowance
With no specific allowance recorded:
Commercial real estate	$	110	$	184	$	—
Land	500		690		—
Commercial loans and leases	238		238		—
With a specific allowance recorded:
Multi-family	8,743		9,929		760
Commercial real estate	40,448		51,948		6,451
Land	5,211		14,509		517
Commercial loans and leases	11,551		12,039		2,194
Total:
Residential	$	—	$	—	$	—
Commercial	66,801		89,537		9,922
	$	66,801	$	89,537	$	9,922

	December 31, 2011
	Recorded Investment in Impaired Loans or Pools		Unpaid Principal Balance		Related Allowance
With no specific allowance recorded:
Land	$	435	$	751	$	—
With a specific allowance recorded:
Multi-family	11,144		13,497		1,063
Commercial real estate	49,876		67,698		10,672
Construction	3,467		11,678		991
Land	12,700		13,838		1,319
Commercial loans and leases	16,914		18,444		2,287
Total:
Residential	$	—	$	—	$	—
Commercial	94,536		125,906		16,332
	$	94,536	$	125,906	$	16,332

The following table summarizes ACI loans that were modified in troubled debt restructurings (“TDRs”) during the three and nine months ended September 30, 2012 and 2011 (dollars in thousands):

	Three Months Ended September 30, 2012						Three Months Ended September 30, 2011
	Loans Modified in TDRs During the Period			TDRs Experiencing Payment Defaults During the Period			Loans Modified in TDRs During the Period			TDRs Experiencing Payment Defaults During the Period
	Number of TDRs	Recorded Investment		Number of TDRs	Recorded Investment		Number of TDRs	Recorded Investment		Number of TDRs	Recorded Investment
Commercial real estate	2	$	152	—	$	—	—	$	—	—	$	—
	2	$	152	—	$	—	—	$	—	—	$	—

	Nine Months Ended September 30, 2012						Nine Months Ended September 30, 2011
	Loans Modified in TDRs During the Period			TDRs Experiencing Payment Defaults During the Period			Loans Modified in TDRs During the Period			TDRs Experiencing Payment Defaults During the Period
	Number of TDRs	Recorded Investment		Number of TDRs	Recorded Investment		Number of TDRs	Recorded Investment		Number of TDRs	Recorded Investment
Commercial real estate	3	$	252	—	$	—	4	$	1,037	3	$	801
Construction	—	—		—	—		1	64		—	—
Land	—	—		—	—		2	896		2	896
Commercial loans and leases	3	317		—	—		—	—		—	—
	6	$	569	—	$	—	7	$	1,997	5	$	1,697

Modifications during the three and nine month periods ended September 30, 2012 and 2011 included restructurings of the amount and timing of payments.

Modified ACI loans accounted for in pools are not considered TDRs, are not separated from the pools and are not classified as impaired loans.

The following table presents the average recorded investment in impaired ACI loans for the three and nine months ended September 30, 2012 and 2011 (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2012		2011		2012		2011
Residential:
Home equity loans and lines of credit	$	—	$	36,493	$	—	$	57,434
	—		36,493		—		57,434
Commercial:
Multi-family	11,023		20,397		13,264		34,221
Commercial real estate	42,877		62,090		46,491		64,144
Construction	703		4,051		2,147		4,532
Land	10,300		16,080		12,109		23,478
Commercial loans and leases	12,496		21,056		14,089		25,618
	77,399		123,674		88,100		151,993
	$	77,399	$	160,167	$	88,100	$	209,427

The following tables summarize key indicators of credit quality for the Company’s ACI loans as of September 30, 2012 and December 31, 2011 (in thousands):

Residential credit exposure, based on delinquency status:

	September 30, 2012				December 31, 2011
	1-4 Single Family Residential		Home Equity Loans and Lines of Credit		1-4 Single Family Residential		Home Equity Loans and Lines of Credit
Current	$	1,141,314	$	46,373	$	1,278,887	$	57,290
Past due less than 90 days	77,681		2,418		92,215		3,327
Past due 90 days or more	239,175		9,687		310,764		10,948
	$	1,458,170	$	58,478	$	1,681,866	$	71,565

Consumer credit exposure, based on delinquency status:

	September 30, 2012		December 31, 2011
Current	$	2,373	$	2,866
Past due less than 90 days	15		33
Past due 90 days or more	7		38
	$	2,395	$	2,937

Commercial credit exposure, based on internal risk rating:

	September 30, 2012
	Multi-Family		Commercial Real Estate		Construction		Land		Commercial Loans and Leases
Pass	$	34,861	$	109,608	$	726	$	7,610	$	7,086
Special mention	1,029		6,764		—		—		—
Substandard	21,897		67,112		1,964		8,559		8,720
Doubtful	—		71		—		24		225
	$	57,787	$	183,555	$	2,690	$	16,193	$	16,031

	December 31, 2011
	Multi-Family		Commercial Real Estate		Construction		Land		Commercial Loans and Leases
Pass	$	34,593	$	128,762	$	635	$	14,977	$	12,657
Special mention	2,074		10,857		—		—		171
Substandard	24,524		83,681		3,467		18,041		10,374
Doubtful	519		56		—		—		805
	$	61,710	$	223,356	$	4,102	$	33,018	$	24,007

The following table presents an aging of loans in the ACI portfolio as of September 30, 2012 and December 31, 2011 (in thousands):

	September 30, 2012										December 31, 2011
	Current		30 - 59 Days Past Due		60 - 89 Days Past Due		90 Days or More Past Due or in Foreclosure		Total		Current		30 - 59 Days Past Due		60 - 89 Days Past Due		90 Days or More Past Due or in Foreclosure		Total
1-4 single family residential	$	1,141,314	$	58,659	$	19,022	$	239,175	$	1,458,170	$	1,278,887	$	66,767	$	25,448	$	310,764	$	1,681,866
Home equity loans and lines of credit	46,373		1,747		671		9,687		58,478		57,290		2,500		827		10,948		71,565
Multi-family	45,423		—		2,315		10,049		57,787		49,116		—		674		11,920		61,710
Commercial real estate	179,146		1,735		—		2,674		183,555		212,253		1,292		459		9,352		223,356
Construction	726		—		—		1,964		2,690		635		—		—		3,467		4,102
Land	9,922		—		—		6,271		16,193		24,396		—		—		8,622		33,018
Commercial loans and leases	10,884		—		147		5,000		16,031		17,678		62		223		6,044		24,007
Consumer	2,373		15		—		7		2,395		2,866		25		8		38		2,937
	$	1,436,161	$	62,156	$	22,155	$	274,827	$	1,795,299	$	1,643,121	$	70,646	$	27,639	$	361,155	$	2,102,561

1-4 single family residential and home equity ACI loans that are contractually delinquent by more than 90 days and accounted for in pools that are on accrual status because discount continues to be accreted totaled $248.9 million and $321.7 million at September 30, 2012 and December 31, 2011, respectively. The carrying amount of commercial and commercial real estate ACI loans that are contractually delinquent in excess of ninety days but still classified as accruing loans due to discount accretion totaled $26.0 million and $39.4 million at September 30, 2012 and December 31, 2011, respectively.

- Definition

The entire disclosure for claims held for amounts due a entity, excluding financing receivables. Examples include, but are not limited to, trade accounts receivables, notes receivables, loans receivables. Includes disclosure for allowance for credit losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5066-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.3,4)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5162-111524

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(k))
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5074-111524

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Statement of Position (SOP)
-Number 01-6
-Paragraph 13
-Subparagraph d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 3, 4
-Article 5

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 7
-Article 9

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph k
-Article 4

+ Details

FDIC Indemnification Asset

9 Months Ended

Sep. 30, 2012

FDIC Indemnification Asset [Abstract]

FDIC Indemnification Asset

Note 6 FDIC Indemnification Asset

The FDIC indemnification asset represents the present value of estimated future payments to be received from the FDIC under the terms of BankUnited’s Loss Sharing Agreements with the FDIC.

When the Company recognizes gains or losses related to covered assets in its consolidated financial statements, changes in the estimated amount recoverable from the FDIC under the Loss Sharing Agreements with respect to those gains or losses are also reflected in the consolidated financial statements. Covered loans may be resolved through prepayment, short sale of the underlying collateral, foreclosure, sale of the loans or, for the non-residential portfolio, charge-off. For loans resolved through prepayment, short sale or foreclosure, the difference between consideration received in satisfaction of the loans and the carrying value of the loans is recognized in the statement of income line item “Income from resolution of covered assets, net.” Losses from the resolution of covered loans increase the amount recoverable from the FDIC under the Loss Sharing Agreements. Gains from the resolution of covered loans reduce the amount recoverable from the FDIC under the Loss Sharing Agreements. Similarly, differences in proceeds received on the sale of OREO and covered loans and their carrying amounts result in gains or losses and reduce or increase the amount recoverable from the FDIC under the Loss Sharing Agreements. Increases in valuation allowances or impairment charges related to covered assets also increase the amount estimated to be recoverable from the FDIC. These additions to or reductions in amounts recoverable from the FDIC related to the resolution of covered assets are recorded in the statement of income line item “Net gain (loss) on indemnification asset” and reflected as corresponding increases or decreases in the FDIC indemnification asset.

The following table summarizes the components of the gains and losses associated with covered assets, along with the related additions to or reductions in the amounts recoverable from the FDIC under the Loss Sharing Agreements, as reflected in the consolidated statements of income for the three and nine months ended September 30, 2012 and 2011 (in thousands):

	Three Months Ended September 30, 2012									Three Months Ended September 30, 2011
	Transaction Income (Loss)			Net Gain (Loss) on Indemnification Asset			Net Impact on Pre-tax Earnings			Transaction Income (Loss)			Net Gain (Loss) on Indemnification Asset			Net Impact on Pre-tax Earnings
(Provision for) recovery of losses on covered loans	$	(1,021	)	$	947		$	(74	)	$	6,379		$	(3,762	)	$	2,617
Income from resolution of covered assets, net	17,517			(15,136		)	2,381			4,702			(2,668		)	2,034
Gain (loss) on sale of OREO	1,410			(1,118		)	292			(2,865		)	2,425			(440		)
Impairment of OREO	(1,385		)	1,108			(277		)	(4,037		)	3,228			(809		)
Net OREO gain (loss)	25			(10		)	15			(6,902		)	5,653			(1,249		)
	$	16,521		$	(14,199	)	$	2,322		$	4,179		$	(777	)	$	3,402

	Nine Months Ended September 30, 2012									Nine Months Ended September 30, 2011
	Transaction Income (Loss)			Net Gain (Loss) on Indemnification Asset			Net Impact on Pre-tax Earnings			Transaction Income (Loss)			Net Gain (Loss) on Indemnification Asset			Net Impact on Pre-tax Earnings
(Provision for) recovery of losses on covered loans	$	(1,137	)	$	1,620		$	483		$	2,805		$	(2,930	)	$	(125	)
Income from resolution of covered assets, net	39,602			(33,510		)	6,092			7,068			1,486			8,554
Gain (loss) on sale of OREO	1,499			(1,096		)	403			(27,339		)	20,813			(6,526		)
Impairment of OREO	(7,980		)	6,384			(1,596		)	(21,823		)	17,488			(4,335		)
Net OREO gain (loss)	(6,481		)	5,288			(1,193		)	(49,162		)	38,301			(10,861		)
	$	31,984		$	(26,602	)	$	5,382		$	(39,289	)	$	36,857		$	(2,432	)

Changes in the FDIC indemnification asset for the nine months ended September 30, 2012 and the year ended December 31, 2011 were as follows (in thousands):

Balance, December 31, 2010	$	2,667,401
Accretion	55,901
Reduction for claims filed	(753,963		)
Net gain on indemnification asset	79,812
Balance, December 31, 2011	2,049,151
Accretion	14,513
Reduction for claims filed	(408,551		)
Net loss on indemnification asset	(26,602		)
Balance, September 30, 2012	$	1,628,511

Under the terms of the Loss Sharing Agreements, the Company is also entitled to reimbursement from the FDIC for certain expenses related to covered assets upon final resolution of those assets. For the three and nine months ended September 30, 2012 and 2011, non-interest expense includes approximately $4.8 million, $14.9 million, $6.0 million and $23.5 million, respectively, of expenses subject to reimbursement at the 80% level under the Loss Sharing Agreements. For those same periods, claims of $3.6 million, $13.4 million, $5.9 million and $24.6 million, respectively, were submitted to the FDIC for reimbursement. As of September 30, 2012, $19.2 million of expenses remained to be submitted for reimbursement from the FDIC in future periods as the related covered assets are resolved.

Income Taxes

9 Months Ended

Sep. 30, 2012

Income Taxes [Abstract]

Income Taxes

Note 7 Income Taxes

The Company’s effective income tax rate for the nine months ended September 30, 2012 differed from the statutory federal income tax rate primarily due to the impact of state income taxes. For the nine months ended September 30, 2011 the effective income tax rate differed from the statutory federal income tax rate primarily due to the impact of $110.4 million in non-deductible equity based compensation expense. Additionally, during the nine months ended September 30, 2011, the Company recorded a provision related to uncertain state income tax positions of approximately $8.1 million, including estimated interest and penalties.

- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References

+ Details

Derivatives and Hedging Activities

9 Months Ended

Sep. 30, 2012

Derivatives and Hedging Activities [Abstract]

Derivatives and Hedging Activities

Note 8 Derivatives and Hedging Activities

The Company uses interest rate swaps to manage interest rate risk related to variable rate FHLB advances and certificates of deposit with maturities of one year, which expose the Company to variability in cash flows due to changes in interest rates. The Company enters into LIBOR-based interest rate swaps that are designated as cash flow hedges with the objective of limiting the variability of interest payment cash flows resulting from changes in the benchmark interest rate LIBOR. The effective portion of changes in the fair value of interest rate swaps designated as cash flow hedging instruments is reported in accumulated other comprehensive income (“AOCI”) and subsequently reclassified into interest expense in the same period in which the related interest on the floating-rate debt obligations affects earnings.

The Company also enters into interest rate derivative contracts with certain of its borrowers to enable those borrowers to manage their exposure to interest rate fluctuations. To mitigate interest rate risk associated with these derivative contracts, the Company enters into offsetting derivative contract positions with financial institution counterparties. These interest rate derivative contracts are not designated as hedging instruments; therefore, changes in the fair value of these derivatives are recognized immediately in earnings. The impact on earnings related to changes in fair value of these derivatives for the three and nine months ended September 30, 2012 and 2011 was not material.

The Company may be exposed to credit risk in the event of non-performance by the counterparties to its interest rate derivative agreements. The Company assesses the credit risk of its financial institution counterparties by monitoring publicly available credit rating and financial information. The Company manages dealer credit risk by entering into interest rate derivatives only with primary and highly rated counterparties, the use of ISDA master agreements and counterparty limits. The agreements may require counterparties to post collateral in defined circumstances. The Company is currently in a liability position with respect to these agreements and is therefore not holding any collateral. The Company manages the risk of default by its borrower counterparties through its normal loan underwriting and credit monitoring policies and procedures. The Company does not currently anticipate any losses from failure of interest rate derivative counterparties to honor their obligations.

Some of the Company’s ISDA master agreements with financial institution counterparties contain provisions that permit either counterparty to terminate the agreements and require settlement in the event that regulatory capital ratios fall below certain designated thresholds or upon the initiation of other defined regulatory actions. Currently, there are no circumstances that would trigger these provisions of the agreements. The fair value of derivative instruments containing these provisions that were in a liability position at September 30, 2012 was $68.0 million.

The following tables set forth certain information concerning the Company’s interest rate contract derivative financial instruments and related hedged items at September 30, 2012 and December 31, 2011 (dollars in thousands):

	September 30, 2012
		Weighted Average	Weighted Average	Weighted Average Remaining Life	Notional		Balance Sheet	Fair value
	Hedged Item	Pay Rate	Receive Rate	in Years	Amount		Location	Asset		Liability

Derivatives designated as cash flow hedges:
Pay-fixed interest rate swaps	Variability of interest cash flows on certificates of deposit	3.11%	12-Month Libor	3.1	$	225,000	Other liabilities	$	—	$	(19,479	)
Purchased interest rate forward-starting swaps	Variability of interest cash flows on variable rate borrowings	3.65%	3-Month Libor	3.6	405,000		Other liabilities	—		(48,563		)
Derivatives not designated as hedges:
Pay-fixed interest rate swaps and caps		4.26%	Indexed to 1-month Libor	5.0	87,481		Other liabilities	—		(5,101		)
Pay-variable interest rate swaps and caps		Indexed to 1-month Libor	4.26%	5.0	87,481		Other assets	5,101		—
					$	804,962		$	5,101	$	(73,143	)

	December 31, 2011
		Weighted Average	Weighted Average	Weighted Average Remaining Life	Notional		Balance Sheet	Fair value
	Hedged Item	Pay Rate	Receive Rate	in Years	Amount		Location	Asset		Liability

Derivatives designated as cash flow hedges:
Pay-fixed interest rate swaps	Variability of interest cash flows on certificates of deposit	3.11%	12-Month Libor	3.9	$	225,000	Other liabilities	$	—	$	(15,854	)
Purchased interest rate forward-starting swaps	Variability of interest cash flows on variable rate borrowings	3.65%	3-Month Libor	4.4	405,000		Other liabilities	—		(47,593		)
Derivatives not designated as hedges:
Pay-fixed interest rate swaps		5.15%	Indexed to 1-month Libor	5.6	53,018		Other liabilities	—		(3,731		)
Pay-variable interest rate swaps		Indexed to 1-month Libor	5.15%	5.6	53,018		Other assets	3,731		—
					$	736,036		$	3,731	$	(67,178	)

The following table provides information about gains and losses recognized, included in interest expense in the accompanying consolidated statements of income, related to interest rate contract derivative instruments designated as cash flow hedges for the three and nine months ended September 30, 2012 and 2011 (in thousands):

	Three Months Ended September 30,						Nine Months Ended September 30,
	2012			2011			2012			2011
Amount of loss included in AOCI at end of period, net of tax	$	(37,737	)	$	(38,848	)	$	(37,737	)	$	(38,848	)
Amount of loss reclassified from AOCI into income during the period (effective portion)	$	(4,536	)	$	(4,844	)	$	(13,420	)	$	(14,312	)
Amount of gain recognized in income during the period (ineffective portion)	$	—		$	—		$	—		$	427

During the nine months ended September 30, 2012 and 2011, no derivative positions designated as cash flow hedges were discontinued and none of the gains and losses reported in AOCI were reclassified into earnings as a result of the discontinuance of cash flow hedges or because of the early extinguishment of debt. As of September 30, 2012, the amount expected to be reclassified from AOCI into income during the next twelve months was $15.4 million.

At September 30, 2012, investment securities available for sale with a carrying amount of $76.7 million and cash on deposit of $11.5 million were pledged as collateral for interest rate swaps. The amount of collateral required to be posted by the Company varies based on the settlement value of outstanding swaps, which approximates their carrying amount at September 30, 2012.

The Company enters into commitments to fund residential mortgage loans with the intention that these loans will subsequently be sold into the secondary market. A mortgage loan commitment binds the Company to lend funds to a potential borrower at a specified interest rate within a specified period of time, generally 30 to 90 days. These commitments are considered derivative instruments. The notional amount of outstanding mortgage loan commitment derivatives was $9.6 million and $8.4 million at September 30, 2012 and December 31, 2011, respectively. Outstanding derivative loan commitments expose the Company to the risk that the price of the loans arising from exercise of the commitments might decline from inception of the commitment to funding of the loan. To protect against the price risk inherent in derivative loan commitments, the Company utilizes “best efforts” forward loan sale commitments. Under a “best efforts” contract, the Company commits to deliver an individual mortgage loan to an investor if the loan to the underlying borrower closes. Generally, the price the investor will pay the Company for a loan is specified prior to the loan being funded. These commitments are considered derivative instruments once the underlying loans are funded. The notional amount of forward loan sale commitment derivatives was $1.8 million and $4.0 million at September 30, 2012 and December 31, 2011, respectively. The fair value of derivative loan commitments and forward sale commitments was nominal at September 30, 2012 and December 31, 2011.

- Definition

The entire disclosure for the entity's entire derivative instruments and hedging activities. Describes an entity's risk management strategies, derivatives in hedging activities and non-hedging derivative instruments, the assets, obligations, liabilities, revenues and expenses arising therefrom, and the amounts of and methodologies and assumptions used in determining the amounts of such items.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6441202&loc=d3e80720-113993

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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Reference 6: http://www.xbrl.org/2003/role/presentationRef
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-Topic 815
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-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5579240-113959

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-URI http://asc.fasb.org/extlink&oid=7668309&loc=d3e80784-113994

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-Publisher FASB
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Reference 21: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 22: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Stockholders' Equity

9 Months Ended

Sep. 30, 2012

Stockholders' Equity [Abstract]

Stockholders' Equity

Note 9 Stockholders’ Equity

In February, 2012, the Company created a series of 5,416,000 shares of preferred stock designated “Series A Nonvoting Convertible Preferred Stock”, par value $0.01 per share. The preferred stock ranks pari passu with the Company’s common stock with respect to the payment of dividends or distributions and has a liquidation preference of $0.01 per share. Subject to certain restrictions, each share of preferred stock is convertible into one share of common stock at the option of the holder or upon written request of the Company.

On February 2, 2011, the Company closed the initial public offering (“IPO”) of 33,350,000 shares of its common stock at $27.00 per share. In the offering, the Company sold 4,000,000 shares and selling stockholders sold 29,350,000 shares. Proceeds received by the Company on the sale of the 4,000,000 shares amounted to $102.6 million, net of underwriting discounts. The Company incurred direct costs of the stock issuance of $4.0 million, which were charged to paid-in capital. Prior to the IPO, BankUnited, Inc. was a wholly-owned subsidiary of BU Financial Holdings, LLC (“BUFH”). Immediately prior to the completion of the IPO, a reorganization was effected in accordance with BUFH’s LLC agreement, pursuant to which all equity interests in BankUnited, Inc. were distributed to the members of BUFH and BUFH was liquidated.

Effective January 10, 2011, the Board of Directors of BankUnited, Inc. (the “Board of Directors”), authorized a 10-for-1 split of the Company’s outstanding common shares. Stockholders’ equity has been retroactively adjusted to give effect to this stock split for all periods presented by reclassifying from paid-in capital to common stock the par value of the additional shares issued. All share and per share data have been retroactively restated for all periods presented to reflect this stock split.

Accumulated Other Comprehensive Income

Changes in accumulated other comprehensive income for the three and nine months ended September 30, 2012 and 2011 are summarized as follows (in thousands):

	Three Months Ended September 30,
	2012									2011
	Before Tax			Tax Effect			Net of Tax			Before Tax			Tax Effect			Net of Tax

Unrealized gains (losses) on investment securities available for sale:
Net unrealized holding gains (losses) arising during the period	$	43,774		$	(16,886	)	$	26,888		$	(7,125	)	$	2,756		$	(4,369	)
Reclassification adjustment for net securities gains realized in income	(6,035		)	2,328			(3,707		)	(1,112		)	428			(684		)
Net change in unrealized gains on securities available for sale	37,739			(14,558		)	23,181			(8,237		)	3,184			(5,053		)
Unrealized losses on derivative instruments:
Net unrealized holding loss arising during the period	(5,910		)	2,280			(3,630		)	(24,632		)	9,501			(15,131		)
Reclassification adjustment for net losses realized in income	4,536			(1,750		)	2,786			4,843			(1,868		)	2,975
Net change in unrealized losses on derivative instruments	(1,374		)	530			(844		)	(19,789		)	7,633			(12,156		)
Other comprehensive income (loss)	$	36,365		$	(14,028	)	$	22,337		$	(28,026	)	$	10,817		$	(17,209	)

	Nine Months Ended September 30,
	2012									2011
	Before Tax			Tax Effect			Net of Tax			Before Tax			Tax Effect			Net of Tax

Unrealized gains on investment securities available for sale:
Net unrealized holding gain arising during the period	$	100,523		$	(38,777	)	$	61,746		$	5,991		$	(2,303	)	$	3,688
Reclassification adjustment for net securities gains realized in income	(6,931		)	2,674			(4,257		)	(1,215		)	468			(747		)
Net change in unrealized gains on securities available for sale	93,592			(36,103		)	57,489			4,776			(1,835		)	2,941
Unrealized losses on derivative instruments:
Net unrealized holding loss arising during the period	(14,372		)	5,544			(8,828		)	(38,597		)	14,889			(23,708		)
Reclassification adjustment for net losses realized in income	13,420			(5,177		)	8,243			14,312			(5,521		)	8,791
Net change in unrealized losses on derivative instruments	(952		)	367			(585		)	(24,285		)	9,368			(14,917		)
Other comprehensive income (loss)	$	92,640		$	(35,736	)	$	56,904		$	(19,509	)	$	7,533		$	(11,976	)

- Definition

The entire disclosure for shareholders' equity, comprised of portions attributable to the parent entity and noncontrolling interest, if any, including other comprehensive income (as applicable). Including, but not limited to: (1) balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings; (2) accumulated balance for each classification of other comprehensive income and total amount of comprehensive income; (3) amount and nature of changes in separate accounts, including the number of shares authorized and outstanding, number of shares issued upon exercise and conversion, and for other comprehensive income, the adjustments for reclassifications to net income; (4) rights and privileges of each class of stock authorized; (5) basis of treasury stock, if other than cost, and amounts paid and accounting treatment for treasury stock purchased significantly in excess of market; (6) dividends paid or payable per share and in the aggregate for each class of stock for each period presented; (7) dividend restrictions and accumulated preferred dividends in arrears (in aggregate and per share amount); (8) retained earnings appropriations or restrictions, such as dividend restrictions; (9) impact of change in accounting principle, initial adoption of new accounting principle and correction of an error in previously issued financial statements; (10) shares held in trust for Employee Stock Ownership Plan (ESOP); (11) deferred compensation related to issuance of capital stock; (12) note received for issuance of stock; (13) unamortized discount on shares; (14) description, terms, and number of warrants or rights outstanding; (15) shares under subscription and subscription receivables, effective date of new retained earnings after quasi-reorganization and deficit eliminated by quasi-reorganization and, for a period of at least ten years after the effective date, the point in time from which the new retained dates; and (16) retroactive effective of subsequent change in capital structure.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
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-Paragraph 1
-Subparagraph (SX 210.4-08.(d),(e))
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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Reference 8: http://www.xbrl.org/2003/role/presentationRef
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Reference 9: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6521494

Reference 12: http://www.xbrl.org/2003/role/presentationRef
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Reference 14: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Research Bulletin (ARB)
-Number 43
-Section B
-Paragraph 7, 11A
-Chapter 1
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 15: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
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Reference 16: http://www.xbrl.org/2003/role/presentationRef
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-Name Statement of Financial Accounting Standard (FAS)
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Reference 17: http://www.xbrl.org/2003/role/presentationRef
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-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph d
-Article 4

Reference 18: http://www.xbrl.org/2003/role/presentationRef
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-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 29, 30, 31
-Article 5

Reference 19: http://www.xbrl.org/2003/role/presentationRef
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-Name Staff Accounting Bulletin (SAB)
-Number Topic 4
-Section E

Reference 20: http://www.xbrl.org/2003/role/presentationRef
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-Name Regulation S-X (SX)
-Number 210
-Section 08
-Article 4

Reference 21: http://www.xbrl.org/2003/role/presentationRef
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-Name Staff Accounting Bulletin (SAB)
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Reference 22: http://www.xbrl.org/2003/role/presentationRef
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-Name Statement of Financial Accounting Standard (FAS)
-Number 129
-Paragraph 2, 3, 4, 5, 6, 7, 8
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 23: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Article 3

+ Details

Equity Based Compensation	9 Months Ended
Equity Based Compensation	Sep. 30, 2012
Equity Based Compensation [Abstract]
Equity Based Compensation	Note 10 Equity Based Compensation During the nine months ended September 30, 2012, the Company granted 61,640 shares of unvested stock under the BankUnited 2010 Omnibus Equity Incentive Plan (the “2010 Plan”). The shares granted were valued at the closing price of the Company’s common stock on the date of grant, ranging from $23.08 to $25.20, for a weighted average per share value on the date of grant of $24.57 and an aggregate fair value of $1.4 million, net of anticipated forfeitures. During the nine months ended September 30, 2011, the Company granted 291,440 shares of unvested stock under the 2010 Plan valued at the closing price of the Company’s common stock on the date of grant ranging from $21.74 to $28.05, for a weighted average per share value on the date of grant of $27.81 and an aggregate fair value of $7.4 million, net of anticipated forfeitures. The majority of these shares vest in equal annual installments over a period of three years. Unvested shares participate in dividends declared on the Company’s common stock on a one-for-one basis. In August 2012, in conjunction with the execution of employment agreements with certain of its executive officers the Company granted 297,739 shares of restricted stock under the 2010 Plan. The restricted shares vest on varying schedules through December 31, 2014. The aggregate value of the shares granted was $6.7 million, net of a discount for lack of marketability related to post-vesting transferability restrictions on certain of the shares. The restricted shares participate in dividends declared on the Company’s common stock on a one-for-one basis. The employment agreements also provide for the grant of annual performance share awards under the 2010 Plan based on the achievement of pre-established performance criteria. For the annual performance period ending June 30, 2013, the maximum aggregate value of performance shares that may be granted is $2.0 million. The number of performance shares to be awarded is variable; therefore, these awards are classified as liability instruments in the Company’s consolidated balance sheet. Prior to the IPO, BUFH had a class of authorized membership interests identified as Profits Interest Units (“PIUs”) which were awarded to certain management members of the Company. In conjunction with the IPO, the PIUs outstanding were exchanged for a combination of vested and unvested shares of the Company’s common stock and vested and unvested stock options. The unvested shares and vested stock options participate in dividends declared on the Company’s common stock on a one-for-one basis. The unvested stock options participate on a one-for-one basis in dividends declared on common stock until they vest. In the first quarter of 2011 in conjunction with the IPO, the Company recorded approximately $110.4 million in compensation expense related to the exchange and vesting of PIUs. This expense, which is not deductible for tax purposes, resulted in an offsetting increase in paid-in capital. Total compensation expense recognized in the accompanying consolidated statements of income related to all equity based awards for the three and nine months ended September 30, 2012 was $3.8 million and $20.8 million, respectively. For the three and nine months ended September 30, 2011, compensation expense related to all equity based awards totaled $9.5 million and $135.7 million, respectively.

Fair Value Measurements

9 Months Ended

Sep. 30, 2012

Fair Value Measurements [Abstract]

Fair Value Measurements

Note 11 Fair Value Measurements

Assets and liabilities measured at fair value on a recurring basis

Following is a description of the methodologies used to estimate the fair values of assets and liabilities measured at fair value on a recurring basis and the level within the fair value hierarchy in which those measurements are typically classified.

Investment securities available for sale—Fair value measurements are based on quoted prices in active markets when available; these measurements are classified within level 1 of the fair value hierarchy. These securities typically include U.S. Treasury securities, certain preferred stocks and mutual funds. If quoted prices in active markets are not available, fair values are estimated using quoted prices of securities with similar characteristics, quoted prices of identical securities in less active markets, discounted cash flow techniques, or matrix pricing models. Investment securities available for sale that are generally classified within level 2 of the fair value hierarchy include U.S. Government agency debentures, U.S. Government agency and sponsored enterprise mortgage-backed securities, preferred stock investments for which level 1 valuations are not available, corporate debt securities, certain non-mortgage asset-backed securities, Re-Remics, private label commercial mortgage-backed securities, collateralized loan obligations, state and municipal obligations and U.S. Small Business Administration securities. Pricing of these securities is generally spread driven. Observable inputs that may impact the valuation of these securities include benchmark yield curves, credit spreads, reported trades, dealer quotes, bids, issuer spreads, current rating, historical constant prepayment rates, historical voluntary prepayment rates, structural and waterfall features of individual securities, published collateral data, and for certain securities, historical constant default rates and default severities. Investment securities available for sale generally classified within level 3 of the fair value hierarchy include private label mortgage-backed securities, certain non-mortgage asset-backed securities and trust preferred securities. The Company typically values these securities using internally developed or third-party proprietary pricing models, primarily discounted cash flow valuation techniques, which incorporate both observable and unobservable inputs. Unobservable inputs that may impact the valuation of these securities include risk adjusted discount rates, projected prepayment rates, projected default rates and projected loss severity.

Derivative financial instruments—Interest rate swaps are predominantly traded in over-the-counter markets and, as such, values are determined using widely accepted discounted cash flow modeling techniques. These discounted cash flow models use projections of future cash payments and receipts that are discounted at mid-market rates. Observable inputs that may impact the valuation of these instruments include LIBOR swap rates, LIBOR forward yield curves and counterparty credit risk spreads. These fair value measurements are generally classified within level 2 of the fair value hierarchy. Loan commitment derivatives are priced based on a bid pricing convention adjusted based on the Company’s historical fallout rates. Fallout rates are a significant unobservable input; therefore, these fair value measurements are classified within level 3 of the fair value hierarchy. The fair value of loan commitment derivatives is nominal.

The following tables present assets and liabilities measured at fair value on a recurring basis as of September 30, 2012 and December 31, 2011 (in thousands):

	September 30, 2012
	Level 1		Level 2		Level 3		Total
Investment Securities Available for Sale:
U.S. Treasury and government agency securities	$	20,159	$	22,527	$	—	$	42,686
U.S. Government agency and sponsored enterprise residential mortgage-backed securities	—		2,058,901		—		2,058,901
U.S. Government agency and sponsored enterprise commercial mortgage-backed securities	—		137,254		—		137,254
Re-Remics	—		630,080		—		630,080
Private label residential mortgage-backed securities and CMOs	—		—		488,066		488,066
Private label commercial mortgage-backed securities	—		484,858		—		484,858
Collateralized loan obligations	—		110,246		—		110,246
Non-mortgage asset-backed securities	—		226,157		71,449		297,606
Mutual funds and preferred stocks	148,926		131		—		149,057
State and municipal obligations	—		23,886		—		23,886
Small Business Administration securities	—		344,915		—		344,915
Other debt securities	—		12,360		3,731		16,091
Derivative assets	—		5,101		44		5,145
Total assets at fair value	$	169,085	$	4,056,416	$	563,290	$	4,788,791
Derivative liabilities	—		73,143		—		73,143
Total liabilities at fair value	$	—	$	73,143	$	—	$	73,143

	December 31, 2011
	Level 1		Level 2		Level 3		Total
Investment Securities Available for Sale:
U.S. Government agency and sponsored enterprise residential mortgage-backed securities	$	—	$	1,985,713	$	—	$	1,985,713
Re-Remics	—		546,310		—		546,310
Private label residential mortgage-backed securities and CMO’s	—		—		387,687		387,687
Private label commercial mortgage-backed securities	—		262,562		—		262,562
Non-mortgage asset-backed securities	—		331,015		79,870		410,885
Mutual funds and preferred stocks	253,778		39		—		253,817
State and municipal obligations	—		25,270		—		25,270
Small Business Administration securities	—		303,677		—		303,677
Other debt securities	—		2,897		3,159		6,056
Derivative assets	—		3,731		—		3,731
Total assets at fair value	$	253,778	$	3,461,214	$	470,716	$	4,185,708
Derivative liabilities	—		67,178		—		67,178
Total liabilities at fair value	$	—	$	67,178	$	—	$	67,178

There were no transfers of financial assets between levels of the fair value hierarchy during the three and nine months ended September 30, 2012. During the three months ended September 30, 2011, financial institution preferred stocks with a fair value of $200.1 million were transferred from Level 2 to Level 1 of the fair value hierarchy. Activity in the market for these securities had increased, enabling management to obtain quoted prices in a market considered to be active for identical securities on the measurement date. During the three months ended September 30, 2011, non-mortgage asset-backed securities with a fair value of $64.5 million were transferred from level 2 to level 3 of the fair value hierarchy due to an increase in the significance of unobservable inputs to the valuation of the securities transferred. Transfers are recorded as of the end of the reporting period.

The following tables reconcile changes in the fair value of assets and liabilities measured at fair value on a recurring basis and classified in level 3 of the fair value hierarchy for the three and nine months ended September 30, 2012 and 2011 (in thousands):

	Three Months Ended September 30, 2012
	Private Label Residential Mortgage- Backed Securities			Non-Mortgage Asset- Backed Securities			Other Debt Securities			Derivatives

Balance at beginning of period	$	487,990		$	75,194		$	3,736		$	(4	)
Gains for the period included in:
Net income	—			—			—			48
Other comprehensive income	11,702			555			13			—
Purchases or issuances	22,863			—			—			—
Sales	—			—			—			—
Settlements	(34,489		)	(4,300		)	(18		)	—
Transfers into level 3	—			—			—			—
Transfers out of level 3	—			—			—			—
Balance at end of period	$	488,066		$	71,449		$	3,731		$	44

	Three Months Ended September 30, 2011
	Re-Remics			Private Label Residential Mortgage- Backed Securities			Private Label Commercial Mortgage-Backed Securities			Non-Mortgage Asset-Backed Securities			Other Debt Securities			Derivatives

Balance, beginning of period	$	527,594		$	353,235		$	64,778		$	221,352		$	4,511		$	(29	)
Gains (losses) for the period included in:
Net income	—			—			—			—			—			(19		)
Other comprehensive income	566			(5,217		)	1,498			(722		)	(603		)	—
Purchases or issuances	—			75,000			113,592			45,814			—			—
Sales	—			—			—			—			—			—
Settlements	(34,478		)	(16,758		)	(20,618		)	(4,990		)	(3		)	—
Transfers into level 3	—			—			—			64,533			—			—
Transfers out of level 3	—			—			—			—			—			—
Balance, end of period	$	493,682		$	406,260		$	159,250		$	325,987		$	3,905		$	(48	)

	Nine Months Ended September 30, 2012
	Private Label Residential Mortgage- Backed Securities			Non-Mortgage Asset- Backed Securities			Other Debt Securities			Derivatives

Balance at beginning of period	$	387,687		$	79,870		$	3,159		$	—
Gains for the period included in:
Net income	—			—			—			44
Other comprehensive income	17,852			932			601			—
Purchases or issuances	167,300			—			—			—
Sales	—			—			—			—
Settlements	(84,773		)	(9,353		)	(29		)	—
Transfers into level 3	—			—			—			—
Transfers out of level 3	—			—			—			—
Balance at end of period	$	488,066		$	71,449		$	3,731		$	44

	Nine Months Ended September 30, 2011
	Re-Remics			Private Label Residential Mortgage- Backed Securities			Private Label Commercial Mortgage-Backed Securities			Non-Mortgage Asset-Backed Securities			Other Debt Securities			FDIC Warrant			PIU Liability			Derivatives

Balance, beginning of period	$	612,631		$	382,920		$	—		$	130,610		$	3,943		$	(25,000	)	$	(44,964	)	$	(78	)
Gains (losses) for the period included in:
Net income	—			—			—			—			—			—			—			30
Other comprehensive income	(4,195		)	(12,989		)	1,498			2,956			(35		)	—			—			—
Purchases or issuances	—			84,390			178,370			140,922			—			—			—			—
Sales	—			—			—			—			—			—			—			—
Settlements	(114,754		)	(48,061		)	(20,618		)	(13,034		)	(3		)	25,000			44,964			—
Transfers into level 3	—			—			—			64,533			—			—			—			—
Transfers out of level 3	—			—			—			—			—			—			—			—
Balance, end of period	$	493,682		$	406,260		$	159,250		$	325,987		$	3,905		$	—		$	—		$	(48	)

Changes in the fair value of derivatives are included in the consolidated statement of income line item “Other non-interest expense.”

The following table provides information about the valuation techniques and unobservable inputs used in the valuation of financial instruments falling within level 3 of the fair value hierarchy as of September 30, 2012 (in thousands):

	Fair Value at		Valuation	Unobservable	Range (Weighted
	September 30, 2012		Technique	Input	Average)
Private label residential mortgage-backed securities and CMO’s - Covered	$	206,614	Discounted cash flow	Voluntary prepayment rate	1.00% - 30.40% (8.66%)
				Probability of default	0.00% - 30.74% (8.13%)
				Loss severity	0.00% - 74.85% (7.79%)

Private label residential mortgage-backed securities and CMO’s - Non-covered	$	281,452	Discounted cash flow	Voluntary prepayment rate	6.22% - 62.62% (23.95%)
				Probability of default	0.00% - 7.45% (1.19%)
				Loss severity	0.00% - 49.85% (19.13%)

Non-mortgage asset-backed securities secured by commercial loans	$	71,449	Discounted cash flow	Voluntary prepayment rate	5.00% - 10.00% (8.63%)
				Probability of default	4.00% - 5.00% (4.73%)
				Loss severity	55.00% - 55.00% (55.00%)

The significant unobservable inputs used in the fair value measurement of private label residential mortgage-backed securities and non-mortgage asset-backed securities include voluntary prepayment rates, probability of default and loss severity given default. Generally, significant increases in any of those inputs would result in a lower fair value measurement. Alternatively, decreases in any of those inputs would result in a higher fair value measurement. The fair value measurements of those securities with higher levels of subordination will be less sensitive to changes in these unobservable inputs, while securities with lower levels of subordination will show a higher degree of sensitivity to changes in these unobservable inputs. Generally, a change in the assumption used for probability of default is accompanied by a directionally similar change in the assumption used for loss severity given default and a directionally opposite change in the assumption used for voluntary prepayment rate.

Non-mortgage asset-backed securities for which fair value measurements are categorized in level 3 of the fair value hierarchy at September 30, 2012 consisted of two groups of securities collateralized by small balance commercial loans. The first group, with a fair value of $21.7 million, is comprised of 2003 issue senior floating rate bonds with a coupon of LIBOR + 0.43%, rated AAA/AA+/Aa2 (Fitch/S&P/Moody’s) with a current subordination level of 26.1%. The second group, with a fair value of $49.7 million, is comprised of AAA rated 2011 issue senior fixed rate bonds with a coupon of 5% and a current subordination level of 28.5%.

Non-covered private label residential mortgage-backed securities for which fair value measurements are classified in level 3 of the fair value hierarchy at September 30, 2012 can be categorized into three groups. The first group, with an aggregate fair value of $199.1 million, is comprised of AAA rated securities issued from 2010 to 2012, collateralized by prime jumbo fixed rate and hybrid 1-4 single family residential mortgages with collateral origination dates ranging from 2009 to 2012. The coupon rates on these bonds range from 2.9% to 4.1% and current subordination levels range from 7.3% to 22.8%. The second group, with an aggregate fair value of $38.2 million, consists of securities issued in 2010 collateralized by Alt-a, fixed rate 1-4 single family mortgages originated from 2005 to 2008. The securities in this group are senior and senior subordinate tranches with ratings ranging from Aaa to A1. The coupon rates on these bonds range from 5.2% to 5.7% and current subordination levels range from 60.9% to 71.0%. The third group, with an aggregate fair value of $44.2 million, is comprised of senior tranches issued from 2003 to 2004 collateralized by prime fixed rate and hybrid 1-4 single family residential mortgages originated from 2002 to 2004. These securities have coupons ranging from 2.7% to 5.5%, ratings ranging from A2 to AAA and current subordination levels ranging from 7.1% to 12.9%.

The covered securities for which fair value measurements are categorized in level 3 of the fair value hierarchy at September 30, 2012 consisted of pooled trust preferred securities with a fair value of $3.7 million and private label residential mortgage-backed securities with a fair value of $206.6 million. The trust preferred securities are not material to the Company’s financial statements. The private label mortgage-backed securities were acquired in the FSB Acquisition and vary significantly with respect to seniority, subordination, collateral type and collateral performance; however, because of the Loss Sharing Agreements, the Company has minimal risk with respect to fluctuations in the value of these securities.

The Company uses third-party pricing services in determining fair value measurements for investment securities that are categorized in level 3 of the fair value hierarchy. To obtain an understanding of the methodologies and assumptions used, management may review written documentation provided by the pricing services, conduct interviews with valuation desk personnel, perform on-site walkthroughs and review model results and detailed assumptions used to value selected securities as considered necessary. Management has established a price challenge process that includes a review by the treasury front office of all prices provided on a monthly basis. Any price evidencing unexpected month over month fluctuations or deviations from expectations is challenged. If considered necessary to resolve any discrepancies, a price will be obtained from an additional independent valuation source. The Company does not typically adjust the prices provided, other than through this established challenge process. The results of price challenges are subject to review by executive management. The Company has also established a quarterly process whereby prices provided by our primary pricing service for a sample of securities are validated. When there are price discrepancies, the final determination of fair value is based on careful consideration of the assumptions and inputs employed by each of the pricing sources.

Assets and liabilities measured at fair value on a non-recurring basis

Following is a description of the methodologies used to estimate the fair values of assets and liabilities measured at fair value on a non-recurring basis, and the level within the fair value hierarchy in which those measurements are typically classified.

Impaired loans and OREO - The carrying amount of collateral dependent impaired loans is typically based on the fair value of the underlying collateral, which may be real estate or other business assets, less estimated costs to sell. The carrying value of OREO is initially measured based on the fair value of the real estate acquired in foreclosure and subsequently adjusted to the lower of cost or estimated fair value, less estimated cost to sell. Fair values of real estate collateral are typically based on real estate appraisals which utilize market and income approaches to valuation incorporating both observable and unobservable inputs. When current appraisals are not available, the Company may use brokers’ price opinions, home price indices or other available information about changes in real estate market conditions to adjust the latest appraised value available. These adjustments to appraised values may be subjective and involve significant management judgment. The fair value of collateral consisting of other business assets is generally based on appraisals that use market approaches to valuation incorporating primarily unobservable inputs. Fair value measurements related to collateral dependent impaired loans and OREO are classified within level 3 of the fair value hierarchy.

The following tables present assets for which nonrecurring changes in fair value have been recorded for the three and nine month periods ended September 30, 2012 and 2011 (in thousands):

									Gains (Losses) from Fair Value Changes
	September 30, 2012								Three Months Ended			Nine Months Ended
	Level 1		Level 2		Level 3		Total		September 30, 2012
Other real estate owned	$	—	$	—	$	89,221	$	89,221	$	(1,385	)	$	(7,980	)
Impaired loans	$	—	$	—	$	5,123	$	5,123	$	(1,301	)	$	(1,301	)

									Gains (Losses) from Fair Value Changes
	September 30, 2011								Three Months Ended			Nine Months Ended
	Level 1		Level 2		Level 3		Total		September 30, 2011
Other real estate owned	$	—	$	—	$	124,990	$	124,990	$	(4,037	)	$	(21,823	)
Impaired loans	$	—	$	—	$	2,841	$	2,841	$	(1,352	)	$	(6,506	)

The following table presents the carrying value and fair value of financial instruments as of September 30, 2012 and December 31, 2011 and the level within the fair value hierarchy in which those measurements are classified (in thousands):

		September 30, 2012				December 31, 2011
	Level	Carrying Value		Fair Value		Carrying Value		Fair Value
Assets:
Cash and cash equivalents	1	$	346,643	$	346,643	$	303,742	$	303,742
Investment securities available for sale	1/2/3	4,783,646		4,783,646		4,181,977		4,181,977
Non-marketable equity securities	2	145,723		145,723		147,055		147,055
Loans held for sale	2/3	6,412		6,441		3,952		3,994
Loans:
Covered	3	2,022,848		2,623,766		2,398,737		2,856,268
Non-covered	3	3,218,217		3,238,842		1,689,919		1,725,313
FDIC Indemnification asset	3	1,628,511		1,488,928		2,049,151		1,950,446
Accrued interest receivable	2	22,060		22,060		19,133		19,133
Derivative assets	2/3	5,145		5,145		3,731		3,731
Liabilities:
Demand, savings and money market deposits	1	$	5,732,481	$	5,732,481	$	4,777,530	$	4,777,530
Time deposits	2	2,725,382		2,753,747		2,587,184		2,621,874
Short-term borrowings	1	621		621		206		206
Federal Home Loan Bank advances and other borrowings	2	2,218,695		2,254,007		2,236,131		2,294,265
Income taxes payable	2	5,116		5,116		53,171		53,171
Accrued interest payable	2	6,559		6,559		8,519		8,519
Advance payments by borrowers for taxes and insurance	2	44,645		44,645		21,838		21,838
Derivative liabilities	2	73,143		73,143		67,178		67,178

The following methods and assumptions were used to estimate the fair value of each class of financial instruments, other than those described above:

The carrying amounts of certain financial instruments approximate fair value due to their short-term nature and generally negligible credit risk. These financial instruments include cash and cash equivalents, accrued interest receivable, short-term borrowings, income taxes payable, accrued interest payable and advance payments by borrowers for taxes and insurance.

Non-marketable equity securities:

Non-marketable equity securities include FHLB, Federal Reserve Bank and banker’s bank stock. There is no market for these securities, which can be liquidated only by redemption by the issuer. These securities are carried at par, which has historically represented the redemption price and is therefore considered to approximate fair value. Non-marketable equity securities are evaluated quarterly for potential impairment.

Loans held for sale:

The fair value of conforming loans originated and held for sale is based on pricing currently available to the Company in the secondary market. Non-conforming loans held for sale, if performing, are valued using a market approach based on observable market prices and transactions for comparable instruments. Nonperforming loans held for sale are valued using a discounted cash flow technique incorporating market based probability of default, loss severity given default, recovery lag and appropriately risk weighted discount rate assumptions.

ACI and non-ACI loans:

Fair values are estimated based on a discounted cash flow analysis. Estimates of future cash flows incorporate various factors that may include the type of loan and related collateral, collateral values, estimated default probability and loss severity given default, internal risk rating, whether the interest rate is fixed or variable, term of loan, whether or not the loan is amortizing and loan specific net realizable value analyses for certain commercial and commercial real estate loans. The fair values of loans accounted for in pools are estimated on a pool basis. Other loans may be grouped based on risk characteristics and fair value estimated in the aggregate when applying discounted cash flow valuation techniques. Discount rates are based on current market rates for new originations of comparable loans adjusted for liquidity and credit risk premiums that the Company believes would be required by market participants.

New loans:

Fair values are estimated using a discounted cash flow analysis with a discount rate based on interest rates currently being offered for loans with similar terms to borrowers of similar credit quality. The ALLL is considered a reasonable estimate of the required adjustment to fair value to reflect the impact of credit risk. This estimate may not represent an exit value as defined in ASC 820.

FDIC indemnification asset:

The fair value of the FDIC indemnification asset has been estimated using a discounted cash flow technique incorporating assumptions about the timing and amount of future projected cash payments from the FDIC related to the resolution of covered assets. The factors that impact estimates of future cash flows are similar to those impacting estimated cash flows from ACI and non-ACI loans described above. The discount rate is determined by adjusting the risk free rate to incorporate uncertainty in the estimate of the timing and amount of future cash flows and illiquidity.

Deposits:

The fair value of demand deposits, savings accounts and money market deposits is the amount payable on demand at the reporting date. The fair value of time deposits is estimated using a discounted cash flow technique based on rates currently offered for deposits of similar remaining maturities.

Federal Home Loan Bank advances:

Fair value is estimated by discounting contractual future cash flows using the current rate at which borrowings with similar terms and remaining maturities could be obtained by the Company.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 30
-URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14172-108612

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13537-108611

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 28
-URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14064-108612

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 16
-URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13504-108611

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13433-108611

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 15B
-Subparagraph a, b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 44A, 44B
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 159
-Paragraph 17-22, 27, 28
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 15A
-Subparagraph a-d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 15C, 15D
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 157
-Paragraph 32, 33, 34
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 3, 10, 14, 15
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Commitments and Contingencies

9 Months Ended

Sep. 30, 2012

Commitments and Contingencies [Abstract]

Commitments and Contingencies

Note 12 Commitments and Contingencies

The Company issues off-balance sheet financial instruments to meet the financing needs of its customers. These financial instruments include commitments to fund loans, unfunded commitments under existing lines of credit, and commercial and standby letters of credit. These commitments expose the Company to varying degrees of credit and market risk which are essentially the same as those involved in extending loans to customers, and are subject to the same credit policies used in underwriting loans. Collateral may be obtained based on the Company’s credit evaluation of the counterparty. The Company’s maximum exposure to credit loss is represented by the contractual amount of these commitments. Amounts funded under non-cancellable commitments in effect at the date of the FSB Acquisition are covered under the Loss Sharing Agreements if certain conditions are met.

Commitments to fund loans:

These are agreements to lend funds to customers as long as there is no violation of any condition established in the contract. Commitments to fund loans generally have fixed expiration dates or other termination clauses and may require payment of a fee. Many of these commitments are expected to expire without being funded and, therefore, the total commitment amounts do not necessarily represent future liquidity requirements.

Unfunded commitments under lines of credit:

Unfunded commitments under lines of credit include consumer, home equity, commercial and commercial real estate lines of credit to existing customers. Some of these commitments may mature without being fully funded.

Commercial and standby letters of credit:

Letters of credit are conditional commitments issued by the Company to guarantee the performance of a customer to a third party. These letters of credit are primarily issued to support trade transactions or guarantee arrangements. Fees collected on standby letters of credit represent the fair value of those commitments and are deferred and amortized over their term, which is typically one year or less. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities to customers.

Total lending related commitments outstanding at September 30, 2012 were as follows (in thousands):

	Covered		Non-Covered		Total
Commitments to fund loans	$	—	$	268,507	$	268,507
Commitments to purchase loans	—		24,525		24,525
Unfunded commitments under lines of credit	70,757		417,278		488,035
Commercial and standby letters of credit	—		35,346		35,346
	$	70,757	$	745,656	$	816,413

Legal Proceedings

The Company is involved as plaintiff or defendant in various legal actions arising in the normal course of business. In the opinion of management, based upon advice of legal counsel, the likelihood is remote that the impact of these proceedings, either individually or in the aggregate, would be material to the Company’s consolidated financial position, results of operations or cash flows.

- Definition

The entire disclosure for commitments and contingencies.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6449706&loc=d3e16207-108621

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 440
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6394976&loc=d3e25287-109308

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Interpretation (FIN)
-Number 14
-Paragraph 3
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 5
-Paragraph 9, 10, 11, 12
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Earnings per Share (Tables)

9 Months Ended

Sep. 30, 2012

Earnings per Share [Abstract]

Computation of Basic and Diluted Earnings Per Common Share

	Three Months Ended September 30,						Nine Months Ended September 30,
	2012			2011			2012			2011
Basic earnings per common share:
Numerator:
Net income	$	49,557		$	45,553		$	148,758		$	21,888
Preferred stock dividends	(921		)	—			(2,762		)	—
Net income available to common stockholders	48,636			45,553			145,996			21,888
Distributed and undistributed earnings allocated to participating securities	(3,536		)	(2,267		)	(10,505		)	(2,359		)
Income allocated to common stockholders for basic earnings per common share	$	45,100		$	43,286		$	135,491		$	19,529
Denominator:
Weighted average common shares outstanding	94,196,429			97,265,095			94,856,763			96,712,972
Less average unvested stock awards	(746,934		)	(1,272,726		)	(1,184,068		)	(1,454,811		)
Weighted average shares for basic earnings per common share	93,449,495			95,992,369			93,672,695			95,258,161
Basic earnings per common share	$	0.48		$	0.45		$	1.45		$	0.21
Diluted earnings per common share:
Numerator:
Income allocated to common stockholders for basic earnings per common share	$	45,100		$	43,286		$	135,491		$	19,529
Adjustment for earnings reallocated from participating securities	2,615			1			15			—
Income used in calculating diluted earnings per common share	$	47,715		$	43,287		$	135,506		$	19,529
Denominator:
Average shares for basic earnings per common share	93,449,495			95,992,369			93,672,695			95,258,161
Dilutive effect of stock options and preferred shares	5,613,427			93,938			187,582			137,744
Weighted average shares for diluted earnings per common share	99,062,922			96,086,307			93,860,277			95,395,905
Diluted earnings per common share	$	0.48		$	0.45		$	1.44		$	0.20

Potentially Dilutive Securities Outstanding Categorized

	Three Months Ended September 30,			Nine Months Ended September 30,
		2012	2011		2012	2011
Unvested shares		973,322	1,250,832		973,322	1,250,832
Stock options and warrants		6,963,394	4,534,970		6,963,394	4,534,970
Convertible preferred shares		—	—		5,415,794	—

Acquisition Activity (Tables)

9 Months Ended

Sep. 30, 2012

Acquisition Activity [Abstract]

Estimated Fair Values of Assets Acquired and Liabilities Assumed

Assets:
Cash and cash equivalents	$	23,538
Investment securities available for sale	160,971
Loans	305,954
Deferred tax asset, net	12,023
Intangible assets	1,780
Other assets	4,141
Total assets	508,407
Liabilities:
Deposits	435,500
Other liabilities	2,594
Total liabilities	438,094
Estimated fair value of net assets acquired	70,313
Consideration issued	65,025
Excess of fair value of net assets acquired over consideration issued	$	5,288

Investment Securities Available for Sale (Tables)

9 Months Ended

Sep. 30, 2012

Investment Securities Available for Sale [Abstract]

Investment Securities Available for Sale Categorized

	September 30, 2012
		Covered Securities									Non-Covered Securities
		Amortized		Gross Unrealized					Fair		Amortized		Gross Unrealized					Fair
		Cost		Gains		Losses			Value		Cost		Gains		Losses			Value

U.S. Treasury and government agency securities		$	—	$	—	$	—		$	—	$	42,506	$	181	$	(1	)	$	42,686
U.S. Government agency and sponsored enterprise residential mortgage-backed securities		—		—		—			—		1,991,320		67,616		(35		)	2,058,901
U.S. Government agency and sponsored enterprise commercial mortgage-backed securities		—		—		—			—		134,467		2,787		—			137,254
Resecuritized real estate mortgage investment conduits (“Re-Remics”)		—		—		—			—		622,967		8,180		(1,067		)	630,080
Private label residential mortgage-backed securities and CMOs		148,857		57,927		(170		)	206,614		276,670		4,880		(98		)	281,452
Private label commercial mortgage-backed securities		—		—		—			—		463,914		20,944		—			484,858
Collateralized loan obligations		—		—		—			—		109,757		489		—			110,246
Non-mortgage asset-backed securities		—		—		—			—		292,189		5,777		(360		)	297,606
Mutual funds and preferred stocks		16,382		102		(510		)	15,974		124,961		8,122		—			133,083
State and municipal obligations		—		—		—			—		23,576		314		(4		)	23,886
Small Business Administration securities		—		—		—			—		339,698		5,217		—			344,915
Other debt securities		3,894		2,697		—			6,591		9,130		370		—			9,500
		$	169,133	$	60,726	$	(680	)	$	229,179	$	4,431,155	$	124,877	$	(1,565	)	$	4,554,467

	December 31, 2011
	Covered Securities									Non-Covered Securities
	Amortized		Gross Unrealized					Fair		Amortized		Gross Unrealized					Fair
	Cost		Gains		Losses			Value		Cost		Gains		Losses			Value

U.S. Government agency and sponsored enterprise residential mortgage-backed securities	$	—	$	—	$	—		$	—	$	1,952,095	$	34,823	$	(1,205	)	$	1,985,713
Re-Remics	—		—		—			—		544,924		4,972		(3,586		)	546,310
Private label residential mortgage-backed securities and CMO’s	165,385		44,746		(310		)	209,821		177,614		1,235		(983		)	177,866
Private label commercial mortgage-backed securities	—		—		—			—		255,868		6,694		—			262,562
Non-mortgage asset-backed securities	—		—		—			—		414,274		2,246		(5,635		)	410,885
Mutual funds and preferred stocks	16,382		491		(556		)	16,317		235,705		3,071		(1,276		)	237,500
State and municipal obligations	—		—		—			—		24,994		278		(2		)	25,270
Small Business Administration securities	—		—		—			—		301,109		2,664		(96		)	303,677
Other debt securities	3,868		2,188		—			6,056		—		—		—			—
	$	185,635	$	47,425	$	(866	)	$	232,194	$	3,906,583	$	55,983	$	(12,783	)	$	3,949,783

Maturities of Investment Securities Available for Sale

	Amortized		Fair
	Cost		Value

Due in one year or less	$	822,224	$	857,108
Due after one year through five years	1,932,985		2,012,376
Due after five years through ten years	1,307,818		1,354,308
Due after ten years	395,918		410,797
Mutual funds and preferred stocks with no stated maturity	141,343		149,057
	$	4,600,288	$	4,783,646

Gains and Losses on the Sale and Exchange of Investment Securities Available for Sale

	Three Months Ended September 30,					Nine Months Ended September 30,
	2012		2011			2012			2011

Proceeds from sale of investment securities available for sale	$	117,355	$	130,496		$	256,609		$	199,843

Gross realized gains	$	6,035	$	1,114		$	7,229		$	1,220
Gross realized losses	—		(2		)	(298		)	(5		)
Net realized gain	$	6,035	$	1,112		$	6,931		$	1,215

Aggregate Fair Value and Amount by which Amortized Cost Exceeds Fair Value for Investment Securities that are in Unrealized Loss Positions

	September 30, 2012
	Less than 12 Months					12 Months or Greater					Total
	Fair		Unrealized			Fair		Unrealized			Fair		Unrealized
	Value		Losses			Value		Losses			Value		Losses

U.S. Treasury and government agency securities	$	5,000	$	(1	)	$	—	$	—		$	5,000	$	(1	)
U.S. Government agency and sponsored enterprise residential mortgage-backed securities	15,217		(35		)	—		—			15,217		(35		)
Re-Remics	135,659		(600		)	57,813		(467		)	193,472		(1,067		)
Private label residential mortgage-backed securities and CMOs	23,302		(86		)	5,594		(182		)	28,896		(268		)
Non-mortgage asset-backed securities	—		—			41,923		(360		)	41,923		(360		)
Mutual funds and preferred stocks	266		(316		)	15,250		(194		)	15,516		(510		)
State and municipal obligations	1,436		(4		)	—		—			1,436		(4		)
	$	180,880	$	(1,042	)	$	120,580	$	(1,203	)	$	301,460	$	(2,245	)

	December 31, 2011
	Less than 12 Months					12 Months or Greater					Total
	Fair		Unrealized			Fair		Unrealized			Fair		Unrealized
	Value		Losses			Value		Losses			Value		Losses

U.S. Government agency and sponsored enterprise residential mortgage-backed securities	$	211,168	$	(830	)	$	70,049	$	(375	)	$	281,217	$	(1,205	)
Re-Remics	254,826		(3,344		)	19,491		(242		)	274,317		(3,586		)
Private label residential mortgage-backed securities and CMO’s	114,915		(1,120		)	6,469		(173		)	121,384		(1,293		)
Non-mortgage asset-backed securities	221,904		(5,590		)	8,772		(45		)	230,676		(5,635		)
Mutual funds and preferred stocks	77,811		(1,371		)	14,982		(461		)	92,793		(1,832		)
State and municipal obligations	1,002		(2		)	—		—			1,002		(2		)
Small Business Administration securities	29,774		(96		)	—		—			29,774		(96		)
	$	911,400	$	(12,353	)	$	119,763	$	(1,296	)	$	1,031,163	$	(13,649	)

Loans and Allowance for Loan and Lease Losses (Tables)

9 Months Ended

Sep. 30, 2012

Loans and Allowance for Loan Losses [Abstract]

Loans Categorized

	September 30, 2012
	Covered Loans						Non-Covered Loans								Percent of
	ACI			Non-ACI			ACI		New Loans			Total			Total
Residential:
1-4 single family residential	$	1,458,170		$	99,795		$	—	$	806,440		$	2,364,405		44.4	%
Home equity loans and lines of credit	58,478			161,365			—		2,108			221,951			4.2	%
	1,516,648			261,160			—		808,548			2,586,356			48.6	%
Commercial:
Multi-family	57,787			735			—		303,476			361,998			6.8	%
Commercial real estate	179,432			2,478			4,123		646,941			832,974			15.7	%
Construction	2,690			—			—		43,840			46,530			0.9	%
Land	16,193			157			—		27,240			43,590			0.8	%
Commercial loans and leases	16,031			14,799			—		1,393,979			1,424,809			26.8	%
	272,133			18,169			4,123		2,415,476			2,709,901			51.0	%
Consumer	2,395			—			—		17,398			19,793			0.4	%
Total loans	1,791,176			279,329			4,123		3,241,422			5,316,050			100.0	%
Premiums, discounts and deferred fees and costs, net	—			(26,870		)	—		12,301			(14,569		)
Loans net of premiums, discounts, deferred fees and costs	1,791,176			252,459			4,123		3,253,723			5,301,481
Allowance for loan and lease losses	(9,922		)	(10,865		)	—		(39,629		)	(60,416		)
Loans, net	$	1,781,254		$	241,594		$	4,123	$	3,214,094		$	5,241,065

	December 31, 2011
	Covered Loans						Non-Covered Loans								Percent of
	ACI			Non-ACI			ACI		New Loans			Total			Total
Residential:
1-4 single family residential	$	1,681,866		$	117,992		$	—	$	461,431		$	2,261,289		54.1	%
Home equity loans and lines of credit	71,565			182,745			—		2,037			256,347			6.1	%
	1,753,431			300,737			—		463,468			2,517,636			60.2	%
Commercial:
Multi-family	61,710			791			—		108,178			170,679			4.1	%
Commercial real estate	219,136			32,678			4,220		311,434			567,468			13.6	%
Construction	4,102			—			—		23,252			27,354			0.7	%
Land	33,018			163			—		7,469			40,650			1.0	%
Commercial loans and leases	24,007			20,382			—		799,978			844,367			20.2	%
	341,973			54,014			4,220		1,250,311			1,650,518			39.6	%
Consumer	2,937			—			—		3,372			6,309			0.2	%
Total loans	2,098,341			354,751			4,220		1,717,151			4,174,463			100.0	%
Premiums, discounts and deferred fees and costs, net	—			(30,281		)	—		(7,124		)	(37,405		)
Loans net of premiums, discounts, deferred fees and costs	2,098,341			324,470			4,220		1,710,027			4,137,058
Allowance for loan and lease losses	(16,332		)	(7,742		)	—		(24,328		)	(48,402		)
Loans, net	$	2,082,009		$	316,728		$	4,220	$	1,685,699		$	4,088,656

Allowance for Loan Losses and Related Loans

	For the Three Months Ended
	September 30, 2012											September 30, 2011
	Residential			Commercial			Consumer		Total			Residential			Commercial			Consumer		Total
Beginning balance	$	16,331		$	39,270		$	34	$	55,635		$	13,177		$	43,422		$	40	$	56,639
Provision for (recovery of) loan losses:
ACI loans	—			(867		)	—		(867		)	(3,689		)	(1,855		)	—		(5,544		)
Non-ACI loans	1,863			25			—		1,888			(2,561		)	1,726			—		(835		)
New loans	752			4,536			65		5,353			2,542			4,862			227		7,631
Total provision	2,615			3,694			65		6,374			(3,708		)	4,733			227		1,252
Charge-offs:
ACI loans	—			(296		)	—		(296		)	—			(2,300		)	—		(2,300		)
Non-ACI loans	(851		)	(181		)	—		(1,032		)	(329		)	(248		)	—		(577		)
New loans	—			(578		)	—		(578		)	—			(179		)	—		(179		)
Total charge-offs	(851		)	(1,055		)	—		(1,906		)	(329		)	(2,727		)	—		(3,056		)
Recoveries:
Non-ACI loans	25			106			—		131			6			216			—		222
New loans	—			182			—		182			—			1			—		1
Total recoveries	25			288			—		313			6			217			—		223
Ending balance	$	18,120		$	42,197		$	99	$	60,416		$	9,146		$	45,645		$	267	$	55,058

	For the Nine Months Ended
	September 30, 2012											September 30, 2011
	Residential			Commercial			Consumer		Total			Residential			Commercial			Consumer		Total
Beginning balance	$	10,175		$	38,176		$	51	$	48,402		$	28,649		$	29,656		$	55	$	58,360
Provision for (recovery of) loan losses:
ACI loans	—			(3,649		)	—		(3,649		)	(18,488		)	10,225			—		(8,263		)
Non-ACI loans	6,505			(1,719		)	—		4,786			(1,777		)	7,235			—		5,458
New loans	4,164			12,519			46		16,729			2,705			9,704			212		12,621
Total provision	10,669			7,151			46		17,866			(17,560		)	27,164			212		9,816
Charge-offs:
ACI loans	—			(2,761		)	—		(2,761		)	—			(10,742		)	—		(10,742		)
Non-ACI loans	(2,751		)	(321		)	—		(3,072		)	(1,963		)	(1,082		)	—		(3,045		)
New loans	—			(1,694		)	—		(1,694		)	—			(794		)	—		(794		)
Total charge-offs	(2,751		)	(4,776		)	—		(7,527		)	(1,963		)	(12,618		)	—		(14,581		)
Recoveries:
ACI loans	—			—			—		—			—			1,212			—		1,212
Non-ACI loans	27			1,382			—		1,409			20			216			—		236
New loans	—			264			2		266			—			15			—		15
Total recoveries	27			1,646			2		1,675			20			1,443			—		1,463
Ending balance	$	18,120		$	42,197		$	99	$	60,416		$	9,146		$	45,645		$	267	$	55,058

ALLL and related loans

	September 30, 2012								December 31, 2011
	Residential		Commercial		Consumer		Total		Residential		Commercial		Consumer		Total
Allowance for loan and lease losses:
Ending balance	$	18,120	$	42,197	$	99	$	60,416	$	10,175	$	38,176	$	51	$	48,402
Ending balance: non-ACI and new loans individually evaluated for impairment	$	924	$	1,301	$	—	$	2,225	$	593	$	—	$	—	$	593
Ending balance: non-ACI and new loans collectively evaluated for impairment	$	17,196	$	30,974	$	99	$	48,269	$	9,582	$	21,844	$	51	$	31,477
Ending balance: ACI	$	—	$	9,922	$	—	$	9,922	$	—	$	16,332	$	—	$	16,332
Ending balance: Non-ACI	$	9,923	$	942	$	—	$	10,865	$	6,142	$	1,600	$	—	$	7,742
Ending balance: New loans	$	8,197	$	31,333	$	99	$	39,629	$	4,033	$	20,244	$	51	$	24,328

Loans:
Ending balance (1)	$	2,586,356	$	2,709,901	$	19,793	$	5,316,050	$	2,517,636	$	1,650,518	$	6,309	$	4,174,463
Ending balance: non-ACI and new loans individually evaluated for impairment (1)	$	4,557	$	14,362	$	—	$	18,919	$	1,937	$	6,728	$	—	$	8,665
Ending balance: non-ACI and new loans collectively evaluated for impairment (1)	$	1,065,151	$	2,419,283	$	17,398	$	3,501,832	$	762,268	$	1,297,597	$	3,372	$	2,063,237
Ending balance: ACI loans	$	1,516,648	$	276,256	$	2,395	$	1,795,299	$	1,753,431	$	346,193	$	2,937	$	2,102,561

New Loans Identified as Impaired

	September 30, 2012
	Recorded Investment in Impaired Loans		Unpaid Principal Balance		Related Specific Allowance		Non-Accrual Loans Included in Impaired Loans
New loans:
With no specific allowance recorded:
1-4 single family residential	$	1,352	$	1,389	$	—	$	—
Multi-family	3,663		3,663		—		—
Commercial real estate	1,629		1,629		—		1,629
Land	286		278		—		286
Commercial loans and leases	4,908		4,899		—		3,842
With a specific allowance recorded:
Commercial loans and leases	2,747		2,747		1,227		2,747
Total:
Residential	$	1,352	$	1,389	$	—	$	—
Commercial	13,233		13,216		1,227		8,504
	$	14,585	$	14,605	$	1,227	$	8,504

	December 31, 2011
	Recorded Investment in Impaired Loans		Unpaid Principal Balance		Related Specific Allowance		Non-Accrual Loans Included in Impaired Loans
New loans:
With no specific allowance recorded:
Home equity loans and lines of credit	$	27	$	27	$	—	$	27
Construction	3		3		—		3
Land	332		332		—		332
Commercial loans and leases	2,469		2,469		—		2,469
With a specific allowance recorded:	—		—		—		—
Total:
Residential	$	27	$	27	$	—	$	27
Commercial	2,804		2,804		—		2,804
	$	2,831	$	2,831	$	—	$	2,831

Non-ACI Loans Identified as Impaired

	September 30, 2012
		Recorded Investment in Impaired Loans		Unpaid Principal Balance		Related Specific Allowance		Non-Accrual Loans Included in Impaired Loans
Non-ACI:
With no specific allowance recorded:
1-4 single family residential		$	4,296	$	5,566	$	—	$	4,166
Home equity loans and lines of credit		10,132		10,333		—		10,132
Commercial real estate		105		105		—		105
Commercial loans and leases		1,957		2,139		—		1,900
With a specific allowance recorded:
1-4 single family residential		3,516		4,557		924		330
Commercial loans and leases		3,677		3,677		74		3,677
Total:
Residential		$	17,944	$	20,456	$	924	$	14,628
Commercial		5,739		5,921		74		5,682
		$	23,683	$	26,377	$	998	$	20,310

	December 31, 2011
	Recorded Investment in Impaired Loans		Unpaid Principal Balance		Related Specific Allowance		Non-Accrual Loans Included in Impaired Loans
Non-ACI:
With no specific allowance recorded:
1-4 single family residential	$	7,671	$	9,766	$	—	$	7,296
Home equity loans and lines of credit	10,451		10,670		—		10,451
Commercial real estate	295		295		—		295
Commercial loans and leases	6,695		6,887		—		6,695
With a specific allowance recorded:
1-4 single family residential	1,521		1,937		593		114
Total:
Residential	$	19,643	$	22,373	$	593	$	17,861
Commercial	6,990		7,182		—		6,990
	$	26,633	$	29,555	$	593	$	24,851

Loans that were Modified in Troubled Debt Restructurings

	Three Months Ended September 30, 2012						Three Months Ended September 30, 2011
	Loans Modified in TDRs During the Period			TDRs Experiencing Payment Defaults During the Period			Loans Modified in TDRs During the Period			TDRs Experiencing Payment Defaults During the Period
	Number of TDRs	Recorded Investment		Number of TDRs	Recorded Investment		Number of TDRs	Recorded Investment		Number of TDRs	Recorded Investment
New loans:
Commercial loans and leases	3	$	688	—	$	—	1	$	231	—	$	—
	3	$	688	—	$	—	1	$	231	—	$	—

	Nine Months Ended September 30, 2012						Nine Months Ended September 30, 2011
	Loans Modified in TDRs During the Period			TDRs Experiencing Payment Defaults During the Period			Loans Modified in TDRs During the Period			TDRs Experiencing Payment Defaults During the Period
	Number of TDRs	Recorded Investment		Number of TDRs	Recorded Investment		Number of TDRs	Recorded Investment		Number of TDRs	Recorded Investment
New loans:
Multi-family	1	$	3,663	—	$	—	—	$	—	—	$	—
Commercial loans and leases	6	1,686		1	245		1	231		—	—
	7	$	5,349	1	$	245	1	$	231	—	$	—

	Three Months Ended September 30, 2012						Three Months Ended September 30, 2011
	Loans Modified in TDRs During the Period			TDRs Experiencing Payment Defaults During the Period			Loans Modified in TDRs During the Period			TDRs Experiencing Payment Defaults During the Period
	Number of TDRs	Recorded Investment		Number of TDRs	Recorded Investment		Number of TDRs	Recorded Investment		Number of TDRs	Recorded Investment
Non-ACI:
1-4 single family residential	2	$	248	1	$	121	1	$	66	—	$	—
Commercial loans and leases	1	17		—	—		2	31		—	—
	3	$	265	1	$	121	3	$	97	—	$	—

	Nine Months Ended September 30, 2012						Nine Months Ended September 30, 2011
	Loans Modified in TDRs During the Period			TDRs Experiencing Payment Defaults During the Period			Loans Modified in TDRs During the Period			TDRs Experiencing Payment Defaults During the Period
	Number of TDRs	Recorded Investment		Number of TDRs	Recorded Investment		Number of TDRs	Recorded Investment		Number of TDRs	Recorded Investment
Non-ACI:
1-4 single family residential	4	$	2,072	2	$	294	8	$	786	2	$	183
Commercial real estate	—	—		—	—		1	69		1	69
Commercial loans and leases	2	26		—	—		3	75		1	44
	6	$	2,098	2	$	294	12	$	930	4	$	296

Average Recorded Investment in Impaired Non-ACI and New Loans

	Three Months Ended September 30,								Nine Months Ended September 30,
	2012				2011				2012				2011
	New		Non-ACI		New		Non-ACI		New		Non-ACI		New		Non-ACI
Residential:
1-4 single family residential	$	715	$	7,750	$	1,000	$	9,905	$	393	$	8,318	$	500	$	9,528
Home equity loans and lines of credit	—		9,795		—		10,769		7		10,472		—		10,854
	715		17,545		1,000		20,674		400		18,790		500		20,382
Commercial:
Multi-family	4,613		—		—		30		3,228		—		—		192
Commercial real estate	815		134		—		417		407		204		—		357
Construction	2		—		3		—		2		—		2		—
Land	291		—		332		—		313		—		249		—
Commercial loans and leases	6,961		5,670		2,527		10,760		5,586		6,000		2,890		8,530
	12,682		5,804		2,862		11,207		9,536		6,204		3,141		9,079
	$	13,397	$	23,349	$	3,862	$	31,881	$	9,936	$	24,994	$	3,641	$	29,461

Residential Credit Exposure on Non-ACI and new loans, Based on Delinquency Status

Residential credit exposure, based on delinquency status:

	September 30, 2012				December 31, 2011
	1-4 Single Family Residential		Home Equity Loans and Lines of Credit		1-4 Single Family Residential		Home Equity Loans and Lines of Credit
New loans:
Current	$	816,916	$	2,108	$	450,661	$	1,996
Past due less than 90 days	3,043		—		15,932		14
Past due 90 days or more	1,351		—		—		27
	821,310		2,108		466,593		2,037
Non-ACI:
Current	70,133		142,929		83,075		164,367
Past due less than 90 days	3,090		5,169		2,972		6,807
Past due 90 days or more	3,803		10,132		6,624		7,825
	77,026		158,230		92,671		178,999
	$	898,336	$	160,338	$	559,264	$	181,036

Consumer Credit Exposure on Non-ACI and new loans, Based on Delinquency Status

Consumer credit exposure, based on delinquency status:

	September 30, 2012		December 31, 2011
New loans:
Current	$	17,405	$	3,387
Past due less than 90 days	7		10
	$	17,412	$	3,397

Commercial Credit Exposure on Non-ACI and new loans, Based on Internal Risk Rating

Commercial credit exposure, based on internal risk rating:

	September 30, 2012
	Multi-Family		Commercial Real Estate		Construction		Land		Commercial Loans and Leases
New loans:
Pass	$	295,731	$	639,431	$	43,754	$	26,821	$	1,341,764
Special mention	3,122		—		—		—		24,691
Substandard	4,084		6,090		—		286		25,519
Doubtful	—		—		—		—		1,600
	302,937		645,521		43,754		27,107		1,393,574
Non-ACI:
Pass	716		2,372		—		—		7,926
Special mention	—		—		—		—		277
Substandard	11		105		—		157		4,904
Doubtful	—		—		—		—		735
	727		2,477		—		157		13,842
	$	303,664	$	647,998	$	43,754	$	27,264	$	1,407,416

	December 31, 2011
	Multi-Family		Commercial Real Estate		Construction		Land		Commercial Loans and Leases
New loans:
Pass	$	106,010	$	302,278	$	23,086	$	7,115	$	778,069
Special mention	1,000		5,300		—		—		1,440
Substandard	913		2,430		3		332		9,106
Doubtful	—		—		—		—		918
	107,923		310,008		23,089		7,447		789,533
Non-ACI loans:
Pass	757		32,096		—		—		10,550
Special mention	—		287		—		—		1,752
Substandard	17		295		—		164		6,662
Doubtful	—		—		—		—		220
	774		32,678		—		164		19,184
	$	108,697	$	342,686	$	23,089	$	7,611	$	808,717

Aging of Past Due Loans in the Non-ACI and New Loan Portfolios

	September 30, 2012											December 31, 2011
		Current		30 - 59 Days Past Due		60 - 89 Days Past Due		90 Days or More Past Due or in Foreclosure		Total			Current		30 - 59 Days Past Due		60 - 89 Days Past Due		90 Days or More Past Due or in Foreclosure		Total
New loans:
1-4 single family residential		$	816,916	$	3,043	$	—	$	1,351	$	821,310		$	450,661	$	15,790	$	142	$	—	$	466,593
Home equity loans and lines of credit		2,108		—		—		—		2,108			1,996		14		—		27		2,037
Multi-family		302,937		—		—		—		302,937			107,010		913		—		—		107,923
Commercial real estate		643,892		—		—		1,629		645,521			310,008		—		—		—		310,008
Construction		43,754		—		—		—		43,754			23,086		—		—		3		23,089
Land		27,107		—		—		—		27,107			7,115		—		—		332		7,447
Commercial loans and leases		1,380,143		9,418		2,066		1,947		1,393,574			787,611		349		307		1,266		789,533
Consumer		17,405		7		—		—		17,412			3,387		10		—		—		3,397
		$	3,234,262	$	12,468	$	2,066	$	4,927	$	3,253,723		$	1,690,874	$	17,076	$	449	$	1,628	$	1,710,027

Non-ACI:
1-4 single family residential		$	70,133	$	2,289	$	801	$	3,803	$	77,026		$	83,075	$	1,812	$	1,160	$	6,624	$	92,671
Home equity loans and lines of credit		142,929		4,461		708		10,132		158,230			164,367		4,181		2,626		7,825		178,999
Multi-family		727		—		—		—		727			774		—		—		—		774
Commercial real estate		2,477		—		—		—		2,477			32,383		—		—		295		32,678
Land		157		—		—		—		157			164		—		—		—		164
Commercial loans and leases		8,946		94		149		4,653		13,842			13,318		109		—		5,757		19,184
		225,369		6,844		1,658		18,588		252,459			294,081		6,102		3,786		20,501		324,470
		$	3,459,631	$	19,312	$	3,724	$	23,515	$	3,506,182		$	1,984,955	$	23,178	$	4,235	$	22,129	$	2,034,497

Changes in the Accretable Yield on ACI Loans

Balance, December 31, 2010	$	1,833,974
Reclassifications from non-accretable difference	135,933
Accretion	(446,292		)
Balance, December 31, 2011	1,523,615
Reclassifications from non-accretable difference	83,508
Accretion	(321,177		)
Balance, September 30, 2012	$	1,285,946

Carrying Amount of ACI Loans

	September 30, 2012
		Recorded Investment in Impaired Loans or Pools		Unpaid Principal Balance		Related Specific Allowance
With no specific allowance recorded:
Commercial real estate		$	110	$	184	$	—
Land		500		690		—
Commercial loans and leases		238		238		—
With a specific allowance recorded:
Multi-family		8,743		9,929		760
Commercial real estate		40,448		51,948		6,451
Land		5,211		14,509		517
Commercial loans and leases		11,551		12,039		2,194
Total:
Residential		$	—	$	—	$	—
Commercial		66,801		89,537		9,922
		$	66,801	$	89,537	$	9,922

	December 31, 2011
	Recorded Investment in Impaired Loans or Pools		Unpaid Principal Balance		Related Allowance
With no specific allowance recorded:
Land	$	435	$	751	$	—
With a specific allowance recorded:
Multi-family	11,144		13,497		1,063
Commercial real estate	49,876		67,698		10,672
Construction	3,467		11,678		991
Land	12,700		13,838		1,319
Commercial loans and leases	16,914		18,444		2,287
Total:
Residential	$	—	$	—	$	—
Commercial	94,536		125,906		16,332
	$	94,536	$	125,906	$	16,332

ACI Loans Modified in Troubled Debt Restructurings

	Three Months Ended September 30, 2012						Three Months Ended September 30, 2011
	Loans Modified in TDRs During the Period			TDRs Experiencing Payment Defaults During the Period			Loans Modified in TDRs During the Period			TDRs Experiencing Payment Defaults During the Period
	Number of TDRs	Recorded Investment		Number of TDRs	Recorded Investment		Number of TDRs	Recorded Investment		Number of TDRs	Recorded Investment
Commercial real estate	2	$	152	—	$	—	—	$	—	—	$	—
	2	$	152	—	$	—	—	$	—	—	$	—

	Nine Months Ended September 30, 2012						Nine Months Ended September 30, 2011
	Loans Modified in TDRs During the Period			TDRs Experiencing Payment Defaults During the Period			Loans Modified in TDRs During the Period			TDRs Experiencing Payment Defaults During the Period
	Number of TDRs	Recorded Investment		Number of TDRs	Recorded Investment		Number of TDRs	Recorded Investment		Number of TDRs	Recorded Investment
Commercial real estate	3	$	252	—	$	—	4	$	1,037	3	$	801
Construction	—	—		—	—		1	64		—	—
Land	—	—		—	—		2	896		2	896
Commercial loans and leases	3	317		—	—		—	—		—	—
	6	$	569	—	$	—	7	$	1,997	5	$	1,697

Average Recorded Investment in Impaired ACI Loans

	Three Months Ended September 30,				Nine Months Ended September 30,
	2012		2011		2012		2011
Residential:
Home equity loans and lines of credit	$	—	$	36,493	$	—	$	57,434
	—		36,493		—		57,434
Commercial:
Multi-family	11,023		20,397		13,264		34,221
Commercial real estate	42,877		62,090		46,491		64,144
Construction	703		4,051		2,147		4,532
Land	10,300		16,080		12,109		23,478
Commercial loans and leases	12,496		21,056		14,089		25,618
	77,399		123,674		88,100		151,993
	$	77,399	$	160,167	$	88,100	$	209,427

Residential Credit Exposure on ACI loans, Based on Delinquency Status

Residential credit exposure, based on delinquency status:

	September 30, 2012				December 31, 2011
	1-4 Single Family Residential		Home Equity Loans and Lines of Credit		1-4 Single Family Residential		Home Equity Loans and Lines of Credit
Current	$	1,141,314	$	46,373	$	1,278,887	$	57,290
Past due less than 90 days	77,681		2,418		92,215		3,327
Past due 90 days or more	239,175		9,687		310,764		10,948
	$	1,458,170	$	58,478	$	1,681,866	$	71,565

Consumer Credit Exposure on ACI loans, Based on Delinquency Status

Consumer credit exposure, based on delinquency status:

	September 30, 2012		December 31, 2011
Current	$	2,373	$	2,866
Past due less than 90 days	15		33
Past due 90 days or more	7		38
	$	2,395	$	2,937

Commercial Credit Exposure on ACI loans, Based on Internal Risk Rating

Commercial credit exposure, based on internal risk rating:

	September 30, 2012
	Multi-Family		Commercial Real Estate		Construction		Land		Commercial Loans and Leases
Pass	$	34,861	$	109,608	$	726	$	7,610	$	7,086
Special mention	1,029		6,764		—		—		—
Substandard	21,897		67,112		1,964		8,559		8,720
Doubtful	—		71		—		24		225
	$	57,787	$	183,555	$	2,690	$	16,193	$	16,031

	December 31, 2011
	Multi-Family		Commercial Real Estate		Construction		Land		Commercial Loans and Leases
Pass	$	34,593	$	128,762	$	635	$	14,977	$	12,657
Special mention	2,074		10,857		—		—		171
Substandard	24,524		83,681		3,467		18,041		10,374
Doubtful	519		56		—		—		805
	$	61,710	$	223,356	$	4,102	$	33,018	$	24,007

Aging of Past Due Loans in the ACI Portfolio

September 30, 2012										December 31, 2011
	Current		30 - 59 Days Past Due		60 - 89 Days Past Due		90 Days or More Past Due or in Foreclosure		Total		Current		30 - 59 Days Past Due		60 - 89 Days Past Due		90 Days or More Past Due or in Foreclosure		Total
1-4 single family residential	$	1,141,314	$	58,659	$	19,022	$	239,175	$	1,458,170	$	1,278,887	$	66,767	$	25,448	$	310,764	$	1,681,866
Home equity loans and lines of credit	46,373		1,747		671		9,687		58,478		57,290		2,500		827		10,948		71,565
Multi-family	45,423		—		2,315		10,049		57,787		49,116		—		674		11,920		61,710
Commercial real estate	179,146		1,735		—		2,674		183,555		212,253		1,292		459		9,352		223,356
Construction	726		—		—		1,964		2,690		635		—		—		3,467		4,102
Land	9,922		—		—		6,271		16,193		24,396		—		—		8,622		33,018
Commercial loans and leases	10,884		—		147		5,000		16,031		17,678		62		223		6,044		24,007
Consumer	2,373		15		—		7		2,395		2,866		25		8		38		2,937
	$	1,436,161	$	62,156	$	22,155	$	274,827	$	1,795,299	$	1,643,121	$	70,646	$	27,639	$	361,155	$	2,102,561

FDIC Indemnification Asset (Tables)

9 Months Ended

Sep. 30, 2012

FDIC Indemnification Asset [Abstract]

Gains and Losses Associated with Covered Assets

	Three Months Ended September 30, 2012									Three Months Ended September 30, 2011
	Transaction Income (Loss)			Net Gain (Loss) on Indemnification Asset			Net Impact on Pre-tax Earnings			Transaction Income (Loss)			Net Gain (Loss) on Indemnification Asset			Net Impact on Pre-tax Earnings
(Provision for) recovery of losses on covered loans	$	(1,021	)	$	947		$	(74	)	$	6,379		$	(3,762	)	$	2,617
Income from resolution of covered assets, net	17,517			(15,136		)	2,381			4,702			(2,668		)	2,034
Gain (loss) on sale of OREO	1,410			(1,118		)	292			(2,865		)	2,425			(440		)
Impairment of OREO	(1,385		)	1,108			(277		)	(4,037		)	3,228			(809		)
Net OREO gain (loss)	25			(10		)	15			(6,902		)	5,653			(1,249		)
	$	16,521		$	(14,199	)	$	2,322		$	4,179		$	(777	)	$	3,402

	Nine Months Ended September 30, 2012									Nine Months Ended September 30, 2011
	Transaction Income (Loss)			Net Gain (Loss) on Indemnification Asset			Net Impact on Pre-tax Earnings			Transaction Income (Loss)			Net Gain (Loss) on Indemnification Asset			Net Impact on Pre-tax Earnings
(Provision for) recovery of losses on covered loans	$	(1,137	)	$	1,620		$	483		$	2,805		$	(2,930	)	$	(125	)
Income from resolution of covered assets, net	39,602			(33,510		)	6,092			7,068			1,486			8,554
Gain (loss) on sale of OREO	1,499			(1,096		)	403			(27,339		)	20,813			(6,526		)
Impairment of OREO	(7,980		)	6,384			(1,596		)	(21,823		)	17,488			(4,335		)
Net OREO gain (loss)	(6,481		)	5,288			(1,193		)	(49,162		)	38,301			(10,861		)
	$	31,984		$	(26,602	)	$	5,382		$	(39,289	)	$	36,857		$	(2,432	)

Changes in the FDIC Indemnification Asset

Changes in the FDIC indemnification asset for the nine months ended September 30, 2012 and the year ended December 31, 2011 were as follows (in thousands):

Balance, December 31, 2010	$	2,667,401
Accretion	55,901
Reduction for claims filed	(753,963		)
Net gain on indemnification asset	79,812
Balance, December 31, 2011	2,049,151
Accretion	14,513
Reduction for claims filed	(408,551		)
Net loss on indemnification asset	(26,602		)
Balance, September 30, 2012	$	1,628,511

Derivatives and Hedging Activities (Tables)

9 Months Ended

Sep. 30, 2012

Derivatives and Hedging Activities [Abstract]

Interest Rate Contract Derivative Financial Instruments and Related Hedged Items

	September 30, 2012
		Weighted Average	Weighted Average	Weighted Average Remaining Life	Notional		Balance Sheet	Fair value
	Hedged Item	Pay Rate	Receive Rate	in Years	Amount		Location	Asset		Liability

Derivatives designated as cash flow hedges:
Pay-fixed interest rate swaps	Variability of interest cash flows on certificates of deposit	3.11%	12-Month Libor	3.1	$	225,000	Other liabilities	$	—	$	(19,479	)
Purchased interest rate forward-starting swaps	Variability of interest cash flows on variable rate borrowings	3.65%	3-Month Libor	3.6	405,000		Other liabilities	—		(48,563		)
Derivatives not designated as hedges:
Pay-fixed interest rate swaps and caps		4.26%	Indexed to 1-month Libor	5.0	87,481		Other liabilities	—		(5,101		)
Pay-variable interest rate swaps and caps		Indexed to 1-month Libor	4.26%	5.0	87,481		Other assets	5,101		—
					$	804,962		$	5,101	$	(73,143	)

	December 31, 2011
		Weighted Average	Weighted Average	Weighted Average Remaining Life	Notional		Balance Sheet	Fair value
	Hedged Item	Pay Rate	Receive Rate	in Years	Amount		Location	Asset		Liability

Derivatives designated as cash flow hedges:
Pay-fixed interest rate swaps	Variability of interest cash flows on certificates of deposit	3.11%	12-Month Libor	3.9	$	225,000	Other liabilities	$	—	$	(15,854	)
Purchased interest rate forward-starting swaps	Variability of interest cash flows on variable rate borrowings	3.65%	3-Month Libor	4.4	405,000		Other liabilities	—		(47,593		)
Derivatives not designated as hedges:
Pay-fixed interest rate swaps		5.15%	Indexed to 1-month Libor	5.6	53,018		Other liabilities	—		(3,731		)
Pay-variable interest rate swaps		Indexed to 1-month Libor	5.15%	5.6	53,018		Other assets	3,731		—
					$	736,036		$	3,731	$	(67,178	)

Gains and Losses Recognized, Included in Interest Expense

	Three Months Ended September 30,						Nine Months Ended September 30,
	2012			2011			2012			2011
Amount of loss included in AOCI at end of period, net of tax	$	(37,737	)	$	(38,848	)	$	(37,737	)	$	(38,848	)
Amount of loss reclassified from AOCI into income during the period (effective portion)	$	(4,536	)	$	(4,844	)	$	(13,420	)	$	(14,312	)
Amount of gain recognized in income during the period (ineffective portion)	$	—		$	—		$	—		$	427

Stockholders' Equity (Tables)

9 Months Ended

Sep. 30, 2012

Stockholders' Equity [Abstract]

Changes in Accumulated Other Comprehensive Income

	Three Months Ended September 30,
		2012									2011
		Before Tax			Tax Effect			Net of Tax			Before Tax			Tax Effect			Net of Tax

Unrealized gains (losses) on investment securities available for sale:
Net unrealized holding gains (losses) arising during the period		$	43,774		$	(16,886	)	$	26,888		$	(7,125	)	$	2,756		$	(4,369	)
Reclassification adjustment for net securities gains realized in income		(6,035		)	2,328			(3,707		)	(1,112		)	428			(684		)
Net change in unrealized gains on securities available for sale		37,739			(14,558		)	23,181			(8,237		)	3,184			(5,053		)
Unrealized losses on derivative instruments:
Net unrealized holding loss arising during the period		(5,910		)	2,280			(3,630		)	(24,632		)	9,501			(15,131		)
Reclassification adjustment for net losses realized in income		4,536			(1,750		)	2,786			4,843			(1,868		)	2,975
Net change in unrealized losses on derivative instruments		(1,374		)	530			(844		)	(19,789		)	7,633			(12,156		)
Other comprehensive income (loss)		$	36,365		$	(14,028	)	$	22,337		$	(28,026	)	$	10,817		$	(17,209	)

	Nine Months Ended September 30,
	2012									2011
	Before Tax			Tax Effect			Net of Tax			Before Tax			Tax Effect			Net of Tax

Unrealized gains on investment securities available for sale:
Net unrealized holding gain arising during the period	$	100,523		$	(38,777	)	$	61,746		$	5,991		$	(2,303	)	$	3,688
Reclassification adjustment for net securities gains realized in income	(6,931		)	2,674			(4,257		)	(1,215		)	468			(747		)
Net change in unrealized gains on securities available for sale	93,592			(36,103		)	57,489			4,776			(1,835		)	2,941
Unrealized losses on derivative instruments:
Net unrealized holding loss arising during the period	(14,372		)	5,544			(8,828		)	(38,597		)	14,889			(23,708		)
Reclassification adjustment for net losses realized in income	13,420			(5,177		)	8,243			14,312			(5,521		)	8,791
Net change in unrealized losses on derivative instruments	(952		)	367			(585		)	(24,285		)	9,368			(14,917		)
Other comprehensive income (loss)	$	92,640		$	(35,736	)	$	56,904		$	(19,509	)	$	7,533		$	(11,976	)

Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2012

Fair Value Measurements [Abstract]

Assets and Liabilities Measured at Fair Value on a Recurring Basis

	September 30, 2012
		Level 1		Level 2		Level 3		Total
Investment Securities Available for Sale:
U.S. Treasury and government agency securities		$	20,159	$	22,527	$	—	$	42,686
U.S. Government agency and sponsored enterprise residential mortgage-backed securities		—		2,058,901		—		2,058,901
U.S. Government agency and sponsored enterprise commercial mortgage-backed securities		—		137,254		—		137,254
Re-Remics		—		630,080		—		630,080
Private label residential mortgage-backed securities and CMOs		—		—		488,066		488,066
Private label commercial mortgage-backed securities		—		484,858		—		484,858
Collateralized loan obligations		—		110,246		—		110,246
Non-mortgage asset-backed securities		—		226,157		71,449		297,606
Mutual funds and preferred stocks		148,926		131		—		149,057
State and municipal obligations		—		23,886		—		23,886
Small Business Administration securities		—		344,915		—		344,915
Other debt securities		—		12,360		3,731		16,091
Derivative assets		—		5,101		44		5,145
Total assets at fair value		$	169,085	$	4,056,416	$	563,290	$	4,788,791
Derivative liabilities		—		73,143		—		73,143
Total liabilities at fair value		$	—	$	73,143	$	—	$	73,143

	December 31, 2011
	Level 1		Level 2		Level 3		Total
Investment Securities Available for Sale:
U.S. Government agency and sponsored enterprise residential mortgage-backed securities	$	—	$	1,985,713	$	—	$	1,985,713
Re-Remics	—		546,310		—		546,310
Private label residential mortgage-backed securities and CMO’s	—		—		387,687		387,687
Private label commercial mortgage-backed securities	—		262,562		—		262,562
Non-mortgage asset-backed securities	—		331,015		79,870		410,885
Mutual funds and preferred stocks	253,778		39		—		253,817
State and municipal obligations	—		25,270		—		25,270
Small Business Administration securities	—		303,677		—		303,677
Other debt securities	—		2,897		3,159		6,056
Derivative assets	—		3,731		—		3,731
Total assets at fair value	$	253,778	$	3,461,214	$	470,716	$	4,185,708
Derivative liabilities	—		67,178		—		67,178
Total liabilities at fair value	$	—	$	67,178	$	—	$	67,178

Changes in the Fair Value of Assets Measured at Fair Value

	Three Months Ended September 30, 2012
	Private Label Residential Mortgage- Backed Securities			Non-Mortgage Asset- Backed Securities			Other Debt Securities			Derivatives

Balance at beginning of period	$	487,990		$	75,194		$	3,736		$	(4	)
Gains for the period included in:
Net income	—			—			—			48
Other comprehensive income	11,702			555			13			—
Purchases or issuances	22,863			—			—			—
Sales	—			—			—			—
Settlements	(34,489		)	(4,300		)	(18		)	—
Transfers into level 3	—			—			—			—
Transfers out of level 3	—			—			—			—
Balance at end of period	$	488,066		$	71,449		$	3,731		$	44

	Three Months Ended September 30, 2011
	Re-Remics			Private Label Residential Mortgage- Backed Securities			Private Label Commercial Mortgage-Backed Securities			Non-Mortgage Asset-Backed Securities			Other Debt Securities			Derivatives

Balance, beginning of period	$	527,594		$	353,235		$	64,778		$	221,352		$	4,511		$	(29	)
Gains (losses) for the period included in:
Net income	—			—			—			—			—			(19		)
Other comprehensive income	566			(5,217		)	1,498			(722		)	(603		)	—
Purchases or issuances	—			75,000			113,592			45,814			—			—
Sales	—			—			—			—			—			—
Settlements	(34,478		)	(16,758		)	(20,618		)	(4,990		)	(3		)	—
Transfers into level 3	—			—			—			64,533			—			—
Transfers out of level 3	—			—			—			—			—			—
Balance, end of period	$	493,682		$	406,260		$	159,250		$	325,987		$	3,905		$	(48	)

	Nine Months Ended September 30, 2012
	Private Label Residential Mortgage- Backed Securities			Non-Mortgage Asset- Backed Securities			Other Debt Securities			Derivatives

Balance at beginning of period	$	387,687		$	79,870		$	3,159		$	—
Gains for the period included in:
Net income	—			—			—			44
Other comprehensive income	17,852			932			601			—
Purchases or issuances	167,300			—			—			—
Sales	—			—			—			—
Settlements	(84,773		)	(9,353		)	(29		)	—
Transfers into level 3	—			—			—			—
Transfers out of level 3	—			—			—			—
Balance at end of period	$	488,066		$	71,449		$	3,731		$	44

	Nine Months Ended September 30, 2011
	Re-Remics			Private Label Residential Mortgage- Backed Securities			Private Label Commercial Mortgage-Backed Securities			Non-Mortgage Asset-Backed Securities			Other Debt Securities			FDIC Warrant			PIU Liability			Derivatives

Balance, beginning of period	$	612,631		$	382,920		$	—		$	130,610		$	3,943		$	(25,000	)	$	(44,964	)	$	(78	)
Gains (losses) for the period included in:
Net income	—			—			—			—			—			—			—			30
Other comprehensive income	(4,195		)	(12,989		)	1,498			2,956			(35		)	—			—			—
Purchases or issuances	—			84,390			178,370			140,922			—			—			—			—
Sales	—			—			—			—			—			—			—			—
Settlements	(114,754		)	(48,061		)	(20,618		)	(13,034		)	(3		)	25,000			44,964			—
Transfers into level 3	—			—			—			64,533			—			—			—			—
Transfers out of level 3	—			—			—			—			—			—			—			—
Balance, end of period	$	493,682		$	406,260		$	159,250		$	325,987		$	3,905		$	—		$	—		$	(48	)

Changes in the Fair Value of Liabilities Measured at Fair Value

	Three Months Ended September 30, 2012
	Private Label Residential Mortgage- Backed Securities			Non-Mortgage Asset- Backed Securities			Other Debt Securities			Derivatives

Balance at beginning of period	$	487,990		$	75,194		$	3,736		$	(4	)
Gains for the period included in:
Net income	—			—			—			48
Other comprehensive income	11,702			555			13			—
Purchases or issuances	22,863			—			—			—
Sales	—			—			—			—
Settlements	(34,489		)	(4,300		)	(18		)	—
Transfers into level 3	—			—			—			—
Transfers out of level 3	—			—			—			—
Balance at end of period	$	488,066		$	71,449		$	3,731		$	44

	Three Months Ended September 30, 2011
	Re-Remics			Private Label Residential Mortgage- Backed Securities			Private Label Commercial Mortgage-Backed Securities			Non-Mortgage Asset-Backed Securities			Other Debt Securities			Derivatives

Balance, beginning of period	$	527,594		$	353,235		$	64,778		$	221,352		$	4,511		$	(29	)
Gains (losses) for the period included in:
Net income	—			—			—			—			—			(19		)
Other comprehensive income	566			(5,217		)	1,498			(722		)	(603		)	—
Purchases or issuances	—			75,000			113,592			45,814			—			—
Sales	—			—			—			—			—			—
Settlements	(34,478		)	(16,758		)	(20,618		)	(4,990		)	(3		)	—
Transfers into level 3	—			—			—			64,533			—			—
Transfers out of level 3	—			—			—			—			—			—
Balance, end of period	$	493,682		$	406,260		$	159,250		$	325,987		$	3,905		$	(48	)

	Nine Months Ended September 30, 2012
	Private Label Residential Mortgage- Backed Securities			Non-Mortgage Asset- Backed Securities			Other Debt Securities			Derivatives

Balance at beginning of period	$	387,687		$	79,870		$	3,159		$	—
Gains for the period included in:
Net income	—			—			—			44
Other comprehensive income	17,852			932			601			—
Purchases or issuances	167,300			—			—			—
Sales	—			—			—			—
Settlements	(84,773		)	(9,353		)	(29		)	—
Transfers into level 3	—			—			—			—
Transfers out of level 3	—			—			—			—
Balance at end of period	$	488,066		$	71,449		$	3,731		$	44

	Nine Months Ended September 30, 2011
	Re-Remics			Private Label Residential Mortgage- Backed Securities			Private Label Commercial Mortgage-Backed Securities			Non-Mortgage Asset-Backed Securities			Other Debt Securities			FDIC Warrant			PIU Liability			Derivatives

Balance, beginning of period	$	612,631		$	382,920		$	—		$	130,610		$	3,943		$	(25,000	)	$	(44,964	)	$	(78	)
Gains (losses) for the period included in:
Net income	—			—			—			—			—			—			—			30
Other comprehensive income	(4,195		)	(12,989		)	1,498			2,956			(35		)	—			—			—
Purchases or issuances	—			84,390			178,370			140,922			—			—			—			—
Sales	—			—			—			—			—			—			—			—
Settlements	(114,754		)	(48,061		)	(20,618		)	(13,034		)	(3		)	25,000			44,964			—
Transfers into level 3	—			—			—			64,533			—			—			—			—
Transfers out of level 3	—			—			—			—			—			—			—			—
Balance, end of period	$	493,682		$	406,260		$	159,250		$	325,987		$	3,905		$	—		$	—		$	(48	)

Valuation Techniques and Unobservable Inputs Used in the Valuation of Financial Instruments Falling Within Level 3 of the Fair Value Hierarchy

	Fair Value at		Valuation	Unobservable	Range (Weighted
	September 30, 2012		Technique	Input	Average)
Private label residential mortgage-backed securities and CMO’s - Covered	$	206,614	Discounted cash flow	Voluntary prepayment rate	1.00% - 30.40% (8.66%)
				Probability of default	0.00% - 30.74% (8.13%)
				Loss severity	0.00% - 74.85% (7.79%)

Private label residential mortgage-backed securities and CMO’s - Non-covered	$	281,452	Discounted cash flow	Voluntary prepayment rate	6.22% - 62.62% (23.95%)
				Probability of default	0.00% - 7.45% (1.19%)
				Loss severity	0.00% - 49.85% (19.13%)

Non-mortgage asset-backed securities secured by commercial loans	$	71,449	Discounted cash flow	Voluntary prepayment rate	5.00% - 10.00% (8.63%)
				Probability of default	4.00% - 5.00% (4.73%)
				Loss severity	55.00% - 55.00% (55.00%)

Assets for which Nonrecurring Changes in Fair Value have been recorded

								Gains (Losses) from Fair Value Changes
	September 30, 2012								Three Months Ended			Nine Months Ended
	Level 1		Level 2		Level 3		Total		September 30, 2012
Other real estate owned	$	—	$	—	$	89,221	$	89,221	$	(1,385	)	$	(7,980	)
Impaired loans	$	—	$	—	$	5,123	$	5,123	$	(1,301	)	$	(1,301	)

									Gains (Losses) from Fair Value Changes
	September 30, 2011								Three Months Ended			Nine Months Ended
	Level 1		Level 2		Level 3		Total		September 30, 2011
Other real estate owned	$	—	$	—	$	124,990	$	124,990	$	(4,037	)	$	(21,823	)
Impaired loans	$	—	$	—	$	2,841	$	2,841	$	(1,352	)	$	(6,506	)

Carrying Value and fair Value of Financial Instruments

		September 30, 2012				December 31, 2011
	Level	Carrying Value		Fair Value		Carrying Value		Fair Value
Assets:
Cash and cash equivalents	1	$	346,643	$	346,643	$	303,742	$	303,742
Investment securities available for sale	1/2/3	4,783,646		4,783,646		4,181,977		4,181,977
Non-marketable equity securities	2	145,723		145,723		147,055		147,055
Loans held for sale	2/3	6,412		6,441		3,952		3,994
Loans:
Covered	3	2,022,848		2,623,766		2,398,737		2,856,268
Non-covered	3	3,218,217		3,238,842		1,689,919		1,725,313
FDIC Indemnification asset	3	1,628,511		1,488,928		2,049,151		1,950,446
Accrued interest receivable	2	22,060		22,060		19,133		19,133
Derivative assets	2/3	5,145		5,145		3,731		3,731
Liabilities:
Demand, savings and money market deposits	1	$	5,732,481	$	5,732,481	$	4,777,530	$	4,777,530
Time deposits	2	2,725,382		2,753,747		2,587,184		2,621,874
Short-term borrowings	1	621		621		206		206
Federal Home Loan Bank advances and other borrowings	2	2,218,695		2,254,007		2,236,131		2,294,265
Income taxes payable	2	5,116		5,116		53,171		53,171
Accrued interest payable	2	6,559		6,559		8,519		8,519
Advance payments by borrowers for taxes and insurance	2	44,645		44,645		21,838		21,838
Derivative liabilities	2	73,143		73,143		67,178		67,178

- Definition

Tabular disclosure of the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income (loss), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset.

+ References + Details

- Definition

Tabular disclosure of the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments, assets, and liabilities. Such certain disclosures about the financial instruments, assets, and liabilities include: (1) the fair value of the required items together with their carrying amounts (as appropriate) and (2) the methodology and assumptions used in developing such estimates of fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13476-108611

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13467-108611

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6447952&loc=d3e13220-108610

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 30
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14172-108612

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13433-108611

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 159
-Paragraph 19
-Subparagraph a, b, c(1), d(1)
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 14
-Subparagraph a
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 15
-Subparagraph b-d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 159
-Paragraph 18
-Subparagraph c(2), d, e, f
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 157
-Paragraph 32
-Subparagraph a, c(1), c(2), c(3), d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 10
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

- Definition

Tabular disclosure of the fair value measurement of liabilities using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets), and gains or losses recognized in other comprehensive income (loss) and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs) by class of liability.

+ References + Details

Commitments and Contingencies (Tables)

9 Months Ended

Sep. 30, 2012

Commitments and Contingencies [Abstract]

Total Lending Related Commitments Outstanding

	Covered		Non-Covered		Total
Commitments to fund loans	$	—	$	268,507	$	268,507
Commitments to purchase loans	—		24,525		24,525
Unfunded commitments under lines of credit	70,757		417,278		488,035
Commercial and standby letters of credit	—		35,346		35,346
	$	70,757	$	745,656	$	816,413

Basis of Presentation (Narrative) (Details) $ in Billions	9 Months Ended
Basis of Presentation (Narrative) (Details) $ in Billions	Sep. 30, 2012 USD ($)
Basis of Presentation [Abstract]
Number of Wholly-Owned Subsidiaries (in Subsidiaries)	3
Entity Location [Line Items]
Number of Florida counties BankUnited branches are located in (in Counties)	15
Date that BankUnited acquired all assets and assumed all liabilities from the FDIC (Date)	May 21, 2009
Percent FDIC will reimburse for losses (in Percent)	80.00%
Maximum amount FDIC will reimburse	$ 4
Percent of losses in excess of maximum amount FDIC will reimburse (in Percent)	95.00%
Florida [Member]
Entity Location [Line Items]
Number of branches (in Branches)	96
New York [Member]
Entity Location [Line Items]
Number of branches (in Branches)	2

Earnings per Share (Computation of Basic and Diluted Earnings per Common Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Numerator:
Net income	$ 49,557	$ 45,553	$ 148,758	$ 21,888
Preferred stock dividends	(921)	0	(2,762)	0
Net income available to common stockholders	48,636	45,553	145,996	21,888
Distributed and undistributed earnings allocated to participating securities	(3,536)	(2,267)	(10,505)	(2,359)
Income allocated to common stockholders for basic earnings per common share	$ 45,100	$ 43,286	$ 135,491	$ 19,529
Denominator:
Weighted average common shares outstanding	94,196,429	97,265,095	94,856,763	96,712,972
Less average unvested stock awards	(746,934)	(1,272,726)	(1,184,068)	(1,454,811)
Weighted average shares for basic earnings per common share	93,449,495	95,992,369	93,672,695	95,258,161
Basic earnings per common share (in Dollars per share)	$ 0.48	$ 0.45	$ 1.45	$ 0.21
Numerator:
Income allocated to common stockholders for basic earnings per common share	$ 45,100	$ 43,286	$ 135,491	$ 19,529
Adjustment for earnings reallocated from participating securities	2,615	1	15	0
Income used in calculating diluted earnings per common share	$ 47,715	$ 43,287	$ 135,506	$ 19,529
Denominator:
Average shares for basic earnings per common share	93,449,495	95,992,369	93,672,695	95,258,161
Dilutive effect of stock options and preferred shares	5,613,427	93,938	187,582	137,744
Weighted average shares for diluted earnings per common share	99,062,922	96,086,307	93,860,277	95,395,905
Diluted earnings per common share (in Dollars per share)	$ 0.48	$ 0.45	$ 1.44	$ 0.20

Earnings per Share (Potentially Dilutive Securities Outstanding) (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Unvested shares [Member]
Antidilutive Securities Excluded from Computation of Earnings per Share [Line Items]
Potentially dilutive securities outstanding (in Shares)	973,322	1,250,832	973,322	1,250,832
Stock options and warrants [Member]
Antidilutive Securities Excluded from Computation of Earnings per Share [Line Items]
Potentially dilutive securities outstanding (in Shares)	6,963,394	4,534,970	6,963,394	4,534,970
Convertible preferred shares [Member]
Antidilutive Securities Excluded from Computation of Earnings per Share [Line Items]
Potentially dilutive securities outstanding (in Shares)	0	0	5,415,794	0

- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Antidilution
-URI http://asc.fasb.org/extlink&oid=6505113

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Diluted Earnings Per Share
-URI http://asc.fasb.org/extlink&oid=6510752

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Contingent Stock Agreement
-URI http://asc.fasb.org/extlink&oid=6508534

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 40
-Subparagraph c
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 13, 14
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 07-4
-Paragraph 4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 171
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Acquisition Activity (Narrative) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Feb. 29, 2012
Acquisition Activity [Abstract]
Date of completed acquisition (Date)	Feb. 29, 2012
Purchase price for acquisition of Herald			$ 65,025
Amount of cash issued to Herald for acquisition			25,200
Number of shares of common stock issued to Herald (in Shares)	1,676,060
Value of common stock issued to Herald			38,600
Value of stock options and warrants issued to Herald			$ 1,200
Gain on acquisition	$ 5,288	$ 0
Transaction costs related to acquisition of Herald	3,200
Professional fees related to the acquisition of Herald	900	$ 1,300
Gross contractual amount receivable related to acquired loans	395,200
Estimated amount not expected to be collected based on probability of default and loss severity	$ 12,100

Acquisition Activity (Estimated fair values of assets acquired and liabilities assumed) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Feb. 29, 2012
Assets:
Cash and cash equivalents	$ 23,538
Investment securities available for sale	160,971
Loans	305,954
Deferred tax asset, net	12,023
Intangible assets	1,780
Other assets	4,141
Total assets	508,407
Liabilities:
Deposits	435,500
Other liabilities	2,594
Total liabilities	438,094
Estimated fair value of net assets acquired	70,313
Consideration issued			$ 65,025
Excess of fair value of net assets acquired over consideration issued	$ 5,288	$ 0

Investment Securities Available for Sale (Narrative) (Details) $ in Thousands	Sep. 30, 2012 USD ($)	Dec. 31, 2011 USD ($)
Investment Securities Available for Sale [Abstract]
Estimated weighted average life of investment portfolio (in Years)	4.2
Effective duration of investment portfolio (in Years)	1.7
Carrying value of securities pledged as collateral for FHLB	$ 1,000,000	$ 1,200,000
Total number of securities in unrealized loss positions (in Securities)	42
Available For Sale Securities in Unrealized Loss Position No OTTI Recognized	$ 30
Schedule of Available for Sale Securities [Line items]
Number of securities in unrealized loss positions (in Securities)	12
US Government agency and sponsored enterprise residential mortgage-backed securities [Member]
Schedule of Available for Sale Securities [Line items]
Number of securities in unrealized loss positions (in Securities)	2
Percent of amortized cost related to the amount of impairment (in Percent)	4.00%
Amount of time securities were in unrealized loss positions (in Duration)	less than twelve months
Private label mortgage-backed securities and CMOs and Re-Remics [Member]
Schedule of Available for Sale Securities [Line items]
Number of securities in unrealized loss positions (in Securities)	19
Percent of amortized cost related to the amount of impairment (in Percent)	2.00%
Amount of time securities were in unrealized loss positions (in Duration)	less than twelve months
Non-mortgage asset-backed securities [Member]
Schedule of Available for Sale Securities [Line items]
Number of securities in unrealized loss positions (in Securities)	5
Percent of amortized cost related to the amount of impairment (in Percent)	2.00%
Mututal Funds [Member]
Schedule of Available for Sale Securities [Line items]
Number of securities in unrealized loss positions (in Securities)	1
Percent of amortized cost related to the amount of impairment (in Percent)	1.00%
Amount of time securities were in unrealized loss positions (in Duration)	25 months
Preferred Stock Outstanding [Member]
Schedule of Available for Sale Securities [Line items]
Number of securities in unrealized loss positions (in Securities)	3
Amount of time securities were in unrealized loss positions (in Duration)	past 3 months

Investment Securities Available for Sale (Investment Securities Available for Sale) (Details) - USD ($) $ in Thousands	Sep. 30, 2012	Dec. 31, 2011
Schedule of Available for Sale Securities [Line items]
Amortized cost	$ 4,600,288
Fair value	4,783,646	$ 4,181,977
Covered [Member]
Schedule of Available for Sale Securities [Line items]
Amortized cost	169,133	185,635
Gross Unrealized Gains	60,726	47,425
Gross Unrealized Losses	(680)	(866)
Fair value	229,179	232,194
Covered [Member] \| US Treasury and government agency securities [Member]
Schedule of Available for Sale Securities [Line items]
Amortized cost	0
Gross Unrealized Gains	0
Gross Unrealized Losses	0
Fair value	0
Covered [Member] \| US Government agency and sponsored enterprise residential mortgage-backed securities [Member]
Schedule of Available for Sale Securities [Line items]
Amortized cost	0	0
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair value	0	0
Covered [Member] \| US Government agency and sponsored enterprise commercial mortgage-backed securities [Member]
Schedule of Available for Sale Securities [Line items]
Amortized cost	0
Gross Unrealized Gains	0
Gross Unrealized Losses	0
Fair value	0
Covered [Member] \| Resecuritized real estate mortgage investment conduits ("Re-Remics") [Member]
Schedule of Available for Sale Securities [Line items]
Amortized cost	0	0
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair value	0	0
Covered [Member] \| Private label residential mortgage-backed securities and CMO's [Member]
Schedule of Available for Sale Securities [Line items]
Amortized cost	148,857	165,385
Gross Unrealized Gains	57,927	44,746
Gross Unrealized Losses	(170)	(310)
Fair value	206,614	209,821
Covered [Member] \| Private label commercial mortgage-backed securities [Member]
Schedule of Available for Sale Securities [Line items]
Amortized cost	0	0
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair value	0	0
Covered [Member] \| Collateralized loan obligations [Member]
Schedule of Available for Sale Securities [Line items]
Amortized cost	0
Gross Unrealized Gains	0
Gross Unrealized Losses	0
Fair value	0
Covered [Member] \| Non-mortgage asset-backed securities [Member]
Schedule of Available for Sale Securities [Line items]
Amortized cost	0	0
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair value	0	0
Covered [Member] \| Mutual funds and preferred stocks [Member]
Schedule of Available for Sale Securities [Line items]
Amortized cost	16,382	16,382
Gross Unrealized Gains	102	491
Gross Unrealized Losses	(510)	(556)
Fair value	15,974	16,317
Covered [Member] \| State and municipal obligations [Member]
Schedule of Available for Sale Securities [Line items]
Amortized cost	0	0
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair value	0	0
Covered [Member] \| Small Business Administration securities [Member]
Schedule of Available for Sale Securities [Line items]
Amortized cost	0	0
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair value	0	0
Covered [Member] \| Other debt securities [Member]
Schedule of Available for Sale Securities [Line items]
Amortized cost	3,894	3,868
Gross Unrealized Gains	2,697	2,188
Gross Unrealized Losses	0	0
Fair value	6,591	6,056
Non-covered [Member]
Schedule of Available for Sale Securities [Line items]
Amortized cost	4,431,155	3,906,583
Gross Unrealized Gains	124,877	55,983
Gross Unrealized Losses	(1,565)	(12,783)
Fair value	4,554,467	3,949,783
Non-covered [Member] \| US Treasury and government agency securities [Member]
Schedule of Available for Sale Securities [Line items]
Amortized cost	42,506
Gross Unrealized Gains	181
Gross Unrealized Losses	(1)
Fair value	42,686
Non-covered [Member] \| US Government agency and sponsored enterprise residential mortgage-backed securities [Member]
Schedule of Available for Sale Securities [Line items]
Amortized cost	1,991,320	1,952,095
Gross Unrealized Gains	67,616	34,823
Gross Unrealized Losses	(35)	(1,205)
Fair value	2,058,901	1,985,713
Non-covered [Member] \| US Government agency and sponsored enterprise commercial mortgage-backed securities [Member]
Schedule of Available for Sale Securities [Line items]
Amortized cost	134,467
Gross Unrealized Gains	2,787
Gross Unrealized Losses	0
Fair value	137,254
Non-covered [Member] \| Resecuritized real estate mortgage investment conduits ("Re-Remics") [Member]
Schedule of Available for Sale Securities [Line items]
Amortized cost	622,967	544,924
Gross Unrealized Gains	8,180	4,972
Gross Unrealized Losses	(1,067)	(3,586)
Fair value	630,080	546,310
Non-covered [Member] \| Private label residential mortgage-backed securities and CMO's [Member]
Schedule of Available for Sale Securities [Line items]
Amortized cost	276,670	177,614
Gross Unrealized Gains	4,880	1,235
Gross Unrealized Losses	(98)	(983)
Fair value	281,452	177,866
Non-covered [Member] \| Private label commercial mortgage-backed securities [Member]
Schedule of Available for Sale Securities [Line items]
Amortized cost	463,914	255,868
Gross Unrealized Gains	20,944	6,694
Gross Unrealized Losses	0	0
Fair value	484,858	262,562
Non-covered [Member] \| Collateralized loan obligations [Member]
Schedule of Available for Sale Securities [Line items]
Amortized cost	109,757
Gross Unrealized Gains	489
Gross Unrealized Losses	0
Fair value	110,246
Non-covered [Member] \| Non-mortgage asset-backed securities [Member]
Schedule of Available for Sale Securities [Line items]
Amortized cost	292,189	414,274
Gross Unrealized Gains	5,777	2,246
Gross Unrealized Losses	(360)	(5,635)
Fair value	297,606	410,885
Non-covered [Member] \| Mutual funds and preferred stocks [Member]
Schedule of Available for Sale Securities [Line items]
Amortized cost	124,961	235,705
Gross Unrealized Gains	8,122	3,071
Gross Unrealized Losses	0	(1,276)
Fair value	133,083	237,500
Non-covered [Member] \| State and municipal obligations [Member]
Schedule of Available for Sale Securities [Line items]
Amortized cost	23,576	24,994
Gross Unrealized Gains	314	278
Gross Unrealized Losses	(4)	(2)
Fair value	23,886	25,270
Non-covered [Member] \| Small Business Administration securities [Member]
Schedule of Available for Sale Securities [Line items]
Amortized cost	339,698	301,109
Gross Unrealized Gains	5,217	2,664
Gross Unrealized Losses	0	(96)
Fair value	344,915	303,677
Non-covered [Member] \| Other debt securities [Member]
Schedule of Available for Sale Securities [Line items]
Amortized cost	9,130	0
Gross Unrealized Gains	370	0
Gross Unrealized Losses	0	0
Fair value	$ 9,500	$ 0

Investment Securities Available for Sale (Maturities of Investment Securities Available for Sale) (Details) - USD ($) $ in Thousands	Sep. 30, 2012	Dec. 31, 2011
Investment Securities Available for Sale [Abstract]
Due in one year or less, amortized cost	$ 822,224
Due after one year through five years, amortized cost	1,932,985
Due after five years through ten years, amortized cost	1,307,818
Due after ten years, amortized cost	395,918
Mutual funds and preferred stocks with no stated maturity, amortized cost	141,343
Amortized cost	4,600,288
Due in one year or less, fair value	857,108
Due after one year through five years, fair value	2,012,376
Due after five years through ten years, fair value	1,354,308
Due after ten years, fair value	410,797
Mutual funds and preferred stocks with no stated maturity, fair value	149,057
Fair value	$ 4,783,646	$ 4,181,977

Investment Securities Available for Sale (Gains and Losses on the Sale and Exchange of Investment Securities Available for Sale) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Investment Securities Available for Sale [Abstract]
Proceeds from sale of investment securities available for sale	$ 117,355	$ 130,496	$ 256,609	$ 199,843
Gross realized gains	6,035	1,114	7,229	1,220
Gross realized losses	0	(2)	(298)	(5)
Net realized gain	$ 6,035	$ 1,112	$ 6,931	$ 1,215

- Definition

The cash inflow associated with the sale of debt and equity securities classified as available-for-sale securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26853-111562

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (a),(b)
-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3179-108585

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 115
-Paragraph 18
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 15
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 16
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 16
-Subparagraph a
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Investment Securities Available for Sale (Aggregate Fair Value and Amount by which Amortized Cost Exceeds Fair Value for Investment Securities that are in Unrealized Loss Positions) (Details) - USD ($) $ in Thousands	Sep. 30, 2012	Dec. 31, 2011
Schedule of Available for Sale Securities [Line items]
Estimated fair value, less than 12 months	$ 180,880	$ 911,400
Unrealized losses, less than 12 months	(1,042)	(12,353)
Estimated fair value,12 months or greater	120,580	119,763
Unrealized losses,12 months or greater	(1,203)	(1,296)
Estimated fair value, total	301,460	1,031,163
Unrealized losses, total	(2,245)	(13,649)
US Treasury and government agency securities [Member]
Schedule of Available for Sale Securities [Line items]
Estimated fair value, less than 12 months	5,000
Unrealized losses, less than 12 months	(1)
Estimated fair value,12 months or greater	0
Unrealized losses,12 months or greater	0
Estimated fair value, total	5,000
Unrealized losses, total	(1)
US Government agency and sponsored enterprise residential mortgage-backed securities [Member]
Schedule of Available for Sale Securities [Line items]
Estimated fair value, less than 12 months	15,217	211,168
Unrealized losses, less than 12 months	(35)	(830)
Estimated fair value,12 months or greater	0	70,049
Unrealized losses,12 months or greater	0	(375)
Estimated fair value, total	15,217	281,217
Unrealized losses, total	(35)	(1,205)
Resecuritized real estate mortgage investment conduits ("Re-Remics") [Member]
Schedule of Available for Sale Securities [Line items]
Estimated fair value, less than 12 months	135,659	254,826
Unrealized losses, less than 12 months	(600)	(3,344)
Estimated fair value,12 months or greater	57,813	19,491
Unrealized losses,12 months or greater	(467)	(242)
Estimated fair value, total	193,472	274,317
Unrealized losses, total	(1,067)	(3,586)
Private label residential mortgage-backed securities and CMO's [Member]
Schedule of Available for Sale Securities [Line items]
Estimated fair value, less than 12 months	23,302	114,915
Unrealized losses, less than 12 months	(86)	(1,120)
Estimated fair value,12 months or greater	5,594	6,469
Unrealized losses,12 months or greater	(182)	(173)
Estimated fair value, total	28,896	121,384
Unrealized losses, total	(268)	(1,293)
Non-mortgage asset-backed securities [Member]
Schedule of Available for Sale Securities [Line items]
Estimated fair value, less than 12 months	0	221,904
Unrealized losses, less than 12 months	0	(5,590)
Estimated fair value,12 months or greater	41,923	8,772
Unrealized losses,12 months or greater	(360)	(45)
Estimated fair value, total	41,923	230,676
Unrealized losses, total	(360)	(5,635)
Mutual funds and preferred stocks [Member]
Schedule of Available for Sale Securities [Line items]
Estimated fair value, less than 12 months	266	77,811
Unrealized losses, less than 12 months	(316)	(1,371)
Estimated fair value,12 months or greater	15,250	14,982
Unrealized losses,12 months or greater	(194)	(461)
Estimated fair value, total	15,516	92,793
Unrealized losses, total	(510)	(1,832)
State and municipal obligations [Member]
Schedule of Available for Sale Securities [Line items]
Estimated fair value, less than 12 months	1,436	1,002
Unrealized losses, less than 12 months	(4)	(2)
Estimated fair value,12 months or greater	0	0
Unrealized losses,12 months or greater	0	0
Estimated fair value, total	1,436	1,002
Unrealized losses, total	$ (4)	(2)
Small Business Administration securities [Member]
Schedule of Available for Sale Securities [Line items]
Estimated fair value, less than 12 months		29,774
Unrealized losses, less than 12 months		(96)
Estimated fair value,12 months or greater		0
Unrealized losses,12 months or greater		0
Estimated fair value, total		29,774
Unrealized losses, total		$ (96)

Loans and Allowance for Loan and Lease Losses (Narrative) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Loans and Allowance for Loan Losses [Abstract]
Unpaid principal balance of ACI loans	$ 4,600,000,000		$ 4,600,000,000		$ 5,300,000,000
Value of 1-4 single family residential loans	159,900,000	$ 501,600,000	97,100,000	$ 254,700,000
Value of pledged real estate loans with unpaid principal balance	5,000,000,000		5,000,000,000
Carrying amounts of pledged real estate loans for security for FHLB advances	2,800,000,000		2,800,000,000
Increase (decrease) in FDIC indemnification asset	900,000	$ 1,600,000	(3,800,000)	$ (2,900,000)
Minimum loan balance required for individual impairment evaluations	500,000		500,000
Amount of new and non-ACI impaired loans delinquent by 90 days or more and still accruing	1,500,000		1,500,000		400,000
Minimum loan balance required for individual impairment re-evaluations for credit quality indicators	250,000		250,000
Amount of expected cash flows included in accretable yield from the pool of 1-4 single family residential loans	151,500,000		151,500,000
Unpaid balance of loans remaining in pool of 1-4 single family residential loans	313,500,000		313,500,000
Amount of 1-4 single family residential and home equity ACI loans delinquent more than 90 days and on accrual status	248,900,000		248,900,000		321,700,000
Carrying value of commercial and commercial real estate ACI loans that are delinquent more than 90 days and on accrual status	$ 26,000,000		$ 26,000,000		$ 39,400,000

Loans and Allowance for Loan and Lease Losses (Loans) (Details) - USD ($)
Number in Thousands, $ in Thousands

Sep. 30, 2012

Jun. 30, 2012

Dec. 31, 2011

Sep. 30, 2011

Jun. 30, 2011

Dec. 31, 2010

Financing Receivable Allowance For Credit Losses [Line Items]

Covered Loans

$ 2,022,848

$ 2,398,737

Total

^[1]

$ 5,316,050

$ 4,174,463

Percent of total (in Percent)

0.00%

Total Premiums, discounts, and deferred costs and fees, net

$ (14,569)

$ (37,405)

Covered loans net of discounts, premiums, deferred costs and fees

2,043,635

2,422,811

Total Loans

5,301,481

4,137,058

Allowance for loan and lease losses for Total Loans

(60,416)

$ (55,635)

(48,402)

$ (55,058)

$ (56,639)

$ (58,360)

Non-Covered Loans, net

3,218,217

1,689,919

Loans, net

5,241,065

4,088,656

Residential [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Total

^[1]

$ 2,586,356

$ 2,517,636

Percent of total (in Percent)

0.00%

Allowance for loan and lease losses for Total Loans

$ (18,120)

(16,331)

$ (10,175)

(9,146)

(13,177)

(28,649)

Residential [Member] | 1-4 single family residential [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Total

^[1]

$ 2,364,405

$ 2,261,289

Percent of total (in Percent)

0.00%

Residential [Member] | Home equity loans and lines of credit [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Total

^[1]

$ 221,951

$ 256,347

Percent of total (in Percent)

0.00%

Commercial [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Total

^[1]

$ 2,709,901

$ 1,650,518

Percent of total (in Percent)

0.00%

Allowance for loan and lease losses for Total Loans

$ (42,197)

(39,270)

$ (38,176)

(45,645)

(43,422)

(29,656)

Commercial [Member] | Multi-family [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Total

^[1]

$ 361,998

$ 170,679

Percent of total (in Percent)

0.00%

Commercial [Member] | Commercial real estate [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Total

^[1]

$ 832,974

$ 567,468

Percent of total (in Percent)

0.00%

Commercial [Member] | Construction [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Total

^[1]

$ 46,530

$ 27,354

Percent of total (in Percent)

0.00%

Commercial [Member] | Land [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Total

^[1]

$ 43,590

$ 40,650

Percent of total (in Percent)

0.00%

Commercial [Member] | Commercial loans and leases [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Total

^[1]

$ 1,424,809

$ 844,367

Percent of total (in Percent)

0.00%

Consumer [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Total

^[1]

$ 19,793

$ 6,309

Percent of total (in Percent)

0.00%

Allowance for loan and lease losses for Total Loans

$ (99)

$ (34)

$ (51)

$ (267)

$ (40)

$ (55)

ACI loans [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Covered Loans

1,791,176

2,098,341

Non-Covered Loans

4,123

4,220

Total

^[1]

1,795,299

2,102,561

Premiums, discounts, and deferred costs and fees, net for Covered Loans

Premiums, discounts, and deferred costs and fees, net for Non-Covered Loans

Covered loans net of discounts, premiums, deferred costs and fees

1,791,176

2,098,341

Non-Covered loans net of discounts, premiums, deferred costs and fees

4,123

4,220

Total Loans

1,795,299

2,102,561

Allowance for loan and lease losses for Covered Loans

(9,922)

(16,332)

Allowance for loan and lease losses for Non-Covered Loans

Covered Loans, net

1,781,254

2,082,009

Non-Covered Loans, net

4,123

4,220

ACI loans [Member] | 1-4 single family residential [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Total Loans

1,458,170

1,681,866

ACI loans [Member] | Home equity loans and lines of credit [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Total Loans

58,478

71,565

ACI loans [Member] | Multi-family [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Total Loans

57,787

61,710

ACI loans [Member] | Commercial real estate [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Total Loans

183,555

223,356

ACI loans [Member] | Construction [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Total Loans

2,690

4,102

ACI loans [Member] | Land [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Total Loans

16,193

33,018

ACI loans [Member] | Commercial loans and leases [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Total Loans

16,031

24,007

ACI loans [Member] | Residential [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Covered Loans

1,516,648

1,753,431

Non-Covered Loans

Total

^[1]

1,516,648

1,753,431

Allowance for loan and lease losses for Covered Loans

ACI loans [Member] | Residential [Member] | 1-4 single family residential [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Covered Loans

1,458,170

1,681,866

Non-Covered Loans

Total Loans

1,458,170

1,681,866

ACI loans [Member] | Residential [Member] | Home equity loans and lines of credit [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Covered Loans

58,478

71,565

Non-Covered Loans

Total Loans

58,478

71,565

ACI loans [Member] | Commercial [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Covered Loans

272,133

341,973

Non-Covered Loans

4,123

4,220

Total

^[1]

276,256

346,193

Allowance for loan and lease losses for Covered Loans

(9,922)

(16,332)

ACI loans [Member] | Commercial [Member] | Multi-family [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Covered Loans

57,787

61,710

Non-Covered Loans

ACI loans [Member] | Commercial [Member] | Commercial real estate [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Covered Loans

179,432

219,136

Non-Covered Loans

4,123

4,220

ACI loans [Member] | Commercial [Member] | Construction [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Covered Loans

2,690

4,102

Non-Covered Loans

ACI loans [Member] | Commercial [Member] | Land [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Covered Loans

16,193

33,018

Non-Covered Loans

ACI loans [Member] | Commercial [Member] | Commercial loans and leases [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Covered Loans

16,031

24,007

Non-Covered Loans

ACI loans [Member] | Consumer [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Covered Loans

2,395

2,937

Non-Covered Loans

Total

^[1]

2,395

2,937

Total Loans

2,395

2,937

Allowance for loan and lease losses for Covered Loans

Non-ACI loans [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Covered Loans

279,329

354,751

Premiums, discounts, and deferred costs and fees, net for Covered Loans

(26,870)

(30,281)

Covered loans net of discounts, premiums, deferred costs and fees

252,459

324,470

Total Loans

252,459

324,470

Allowance for loan and lease losses for Covered Loans

(10,865)

(7,742)

Covered Loans, net

241,594

316,728

Non-ACI loans [Member] | 1-4 single family residential [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Total Loans

77,026

92,671

Non-ACI loans [Member] | Home equity loans and lines of credit [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Total Loans

158,230

178,999

Non-ACI loans [Member] | Multi-family [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Total Loans

727

774

Non-ACI loans [Member] | Commercial real estate [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Total Loans

2,477

32,678

Non-ACI loans [Member] | Construction [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Total Loans

Non-ACI loans [Member] | Land [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Total Loans

157

164

Non-ACI loans [Member] | Commercial loans and leases [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Total Loans

13,842

19,184

Non-ACI loans [Member] | Residential [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Covered Loans

261,160

300,737

Allowance for loan and lease losses for Covered Loans

(9,923)

(6,142)

Non-ACI loans [Member] | Residential [Member] | 1-4 single family residential [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Covered Loans

99,795

117,992

Total Loans

77,026

92,671

Non-ACI loans [Member] | Residential [Member] | Home equity loans and lines of credit [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Covered Loans

161,365

182,745

Total Loans

158,230

178,999

Non-ACI loans [Member] | Commercial [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Covered Loans

18,169

54,014

Allowance for loan and lease losses for Covered Loans

(942)

(1,600)

Non-ACI loans [Member] | Commercial [Member] | Multi-family [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Covered Loans

735

791

Non-ACI loans [Member] | Commercial [Member] | Commercial real estate [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Covered Loans

2,478

32,678

Non-ACI loans [Member] | Commercial [Member] | Construction [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Covered Loans

Non-ACI loans [Member] | Commercial [Member] | Land [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Covered Loans

157

163

Non-ACI loans [Member] | Commercial [Member] | Commercial loans and leases [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Covered Loans

14,799

20,382

Non-ACI loans [Member] | Consumer [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Covered Loans

Allowance for loan and lease losses for Covered Loans

New Loans [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Non-Covered Loans

3,241,422

1,717,151

Premiums, discounts, and deferred costs and fees, net for Non-Covered Loans

12,301

(7,124)

Non-Covered loans net of discounts, premiums, deferred costs and fees

3,253,723

1,710,027

Total Loans

3,253,723

1,710,027

Allowance for loan and lease losses for Non-Covered Loans

(39,629)

(24,328)

Non-Covered Loans, net

3,214,094

1,685,699

New Loans [Member] | 1-4 single family residential [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Total Loans

821,310

466,593

New Loans [Member] | Home equity loans and lines of credit [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Total Loans

2,108

2,037

New Loans [Member] | Multi-family [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Total Loans

302,937

107,923

New Loans [Member] | Commercial real estate [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Total Loans

645,521

310,008

New Loans [Member] | Construction [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Total Loans

43,754

23,089

New Loans [Member] | Land [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Total Loans

27,107

7,447

New Loans [Member] | Commercial loans and leases [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Total Loans

1,393,574

789,533

New Loans [Member] | Residential [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Non-Covered Loans

808,548

463,468

Allowance for loan and lease losses for Non-Covered Loans

(8,197)

(4,033)

New Loans [Member] | Residential [Member] | 1-4 single family residential [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Non-Covered Loans

806,440

461,431

Total Loans

821,310

466,593

New Loans [Member] | Residential [Member] | Home equity loans and lines of credit [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Non-Covered Loans

2,108

2,037

Total Loans

2,108

2,037

New Loans [Member] | Commercial [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Non-Covered Loans

2,415,476

1,250,311

Allowance for loan and lease losses for Non-Covered Loans

(31,333)

(20,244)

New Loans [Member] | Commercial [Member] | Multi-family [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Non-Covered Loans

303,476

108,178

New Loans [Member] | Commercial [Member] | Commercial real estate [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Non-Covered Loans

646,941

311,434

New Loans [Member] | Commercial [Member] | Construction [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Non-Covered Loans

43,840

23,252

New Loans [Member] | Commercial [Member] | Land [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Non-Covered Loans

27,240

7,469

New Loans [Member] | Commercial [Member] | Commercial loans and leases [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Non-Covered Loans

1,393,979

799,978

New Loans [Member] | Consumer [Member]

Financing Receivable Allowance For Credit Losses [Line Items]

Non-Covered Loans

17,398

3,372

Total Loans

17,412

3,397

Allowance for loan and lease losses for Non-Covered Loans

$ (99)

$ (51)

[1]	Ending balance of loans is before premiums, discounts, deferred fees and costs.

Loans and Allowance for Loan and Lease Losses (Allowance for Loan Losses and Related Loans) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Allowance for Loan and Lease Losses [Line Items]
Beginning Balance	$ 55,635	$ 56,639	$ 48,402	$ 58,360
Provision for (recovery of) loan losses:
Provision for loan losses	6,374	1,252	17,866	9,816
Charge offs:
Charge offs	(1,906)	(3,056)	(7,527)	(14,581)
Recoveries:
Recoveries	313	223	1,675	1,463
Ending Balance	60,416	55,058	60,416	55,058
Residential [Member]
Allowance for Loan and Lease Losses [Line Items]
Beginning Balance	16,331	13,177	10,175	28,649
Provision for (recovery of) loan losses:
Provision for loan losses	2,615	(3,708)	10,669	(17,560)
Charge offs:
Charge offs	(851)	(329)	(2,751)	(1,963)
Recoveries:
Recoveries	25	6	27	20
Ending Balance	18,120	9,146	18,120	9,146
Commercial [Member]
Allowance for Loan and Lease Losses [Line Items]
Beginning Balance	39,270	43,422	38,176	29,656
Provision for (recovery of) loan losses:
Provision for loan losses	3,694	4,733	7,151	27,164
Charge offs:
Charge offs	(1,055)	(2,727)	(4,776)	(12,618)
Recoveries:
Recoveries	288	217	1,646	1,443
Ending Balance	42,197	45,645	42,197	45,645
Consumer [Member]
Allowance for Loan and Lease Losses [Line Items]
Beginning Balance	34	40	51	55
Provision for (recovery of) loan losses:
Provision for loan losses	65	227	46	212
Charge offs:
Charge offs	0	0	0	0
Recoveries:
Recoveries	0	0	2	0
Ending Balance	99	267	99	267
ACI loans [Member]
Provision for (recovery of) loan losses:
Provision for loan losses	(867)	(5,544)	(3,649)	(8,263)
Charge offs:
Charge offs	(296)	(2,300)	(2,761)	(10,742)
Recoveries:
Recoveries			0	1,212
ACI loans [Member] \| Residential [Member]
Provision for (recovery of) loan losses:
Provision for loan losses	0	(3,689)	0	(18,488)
Charge offs:
Charge offs	0	0	0	0
Recoveries:
Recoveries			0	0
ACI loans [Member] \| Commercial [Member]
Provision for (recovery of) loan losses:
Provision for loan losses	(867)	(1,855)	(3,649)	10,225
Charge offs:
Charge offs	(296)	(2,300)	(2,761)	(10,742)
Recoveries:
Recoveries			0	1,212
ACI loans [Member] \| Consumer [Member]
Provision for (recovery of) loan losses:
Provision for loan losses	0	0	0	0
Charge offs:
Charge offs	0	0	0	0
Recoveries:
Recoveries			0	0
Non-ACI loans [Member]
Provision for (recovery of) loan losses:
Provision for loan losses	1,888	(835)	4,786	5,458
Charge offs:
Charge offs	(1,032)	(577)	(3,072)	(3,045)
Recoveries:
Recoveries	131	222	1,409	236
Non-ACI loans [Member] \| Residential [Member]
Provision for (recovery of) loan losses:
Provision for loan losses	1,863	(2,561)	6,505	(1,777)
Charge offs:
Charge offs	(851)	(329)	(2,751)	(1,963)
Recoveries:
Recoveries	25	6	27	20
Non-ACI loans [Member] \| Commercial [Member]
Provision for (recovery of) loan losses:
Provision for loan losses	25	1,726	(1,719)	7,235
Charge offs:
Charge offs	(181)	(248)	(321)	(1,082)
Recoveries:
Recoveries	106	216	1,382	216
Non-ACI loans [Member] \| Consumer [Member]
Provision for (recovery of) loan losses:
Provision for loan losses	0	0	0	0
Charge offs:
Charge offs	0	0	0	0
Recoveries:
Recoveries	0	0	0	0
New Loans [Member]
Provision for (recovery of) loan losses:
Provision for loan losses	5,353	7,631	16,729	12,621
Charge offs:
Charge offs	(578)	(179)	(1,694)	(794)
Recoveries:
Recoveries	182	1	266	15
New Loans [Member] \| Residential [Member]
Provision for (recovery of) loan losses:
Provision for loan losses	752	2,542	4,164	2,705
Charge offs:
Charge offs	0	0	0	0
Recoveries:
Recoveries	0	0	0	0
New Loans [Member] \| Commercial [Member]
Provision for (recovery of) loan losses:
Provision for loan losses	4,536	4,862	12,519	9,704
Charge offs:
Charge offs	(578)	(179)	(1,694)	(794)
Recoveries:
Recoveries	182	1	264	15
New Loans [Member] \| Consumer [Member]
Provision for (recovery of) loan losses:
Provision for loan losses	65	227	46	212
Charge offs:
Charge offs	0	0	0	0
Recoveries:
Recoveries	$ 0	$ 0	$ 2	$ 0

Loans and Allowance for Loan and Lease Losses (Allowance for Loan Losses and Related Loans Ending Balances) (Details) - USD ($)
$ in Thousands

Sep. 30, 2012

Dec. 31, 2011

Allowance for loan and lease losses:

Ending balance: non-ACI and new loans individually evaluated for impairment

$ 2,225

$ 593

Ending balance: non-ACI and new loans collectively evaluated for impairment

48,269

31,477

Loans:

Ending balance of loans before premium, discount and deferred fees and costs

^[1]

5,316,050

4,174,463

Ending balance: non-ACI and new loans individually evaluated for impairment

^[1]

18,919

8,665

Ending balance: non-ACI and new loans collectively evaluated for impairment

^[1]

3,501,832

2,063,237

Residential [Member]

Allowance for loan and lease losses:

Ending balance: non-ACI and new loans individually evaluated for impairment

924

593

Ending balance: non-ACI and new loans collectively evaluated for impairment

17,196

9,582

Loans:

Ending balance of loans before premium, discount and deferred fees and costs

^[1]

2,586,356

2,517,636

Ending balance: non-ACI and new loans individually evaluated for impairment

^[1]

4,557

1,937

Ending balance: non-ACI and new loans collectively evaluated for impairment

^[1]

1,065,151

762,268

Commercial [Member]

Allowance for loan and lease losses:

Ending balance: non-ACI and new loans individually evaluated for impairment

1,301

Ending balance: non-ACI and new loans collectively evaluated for impairment

30,974

21,844

Loans:

Ending balance of loans before premium, discount and deferred fees and costs

^[1]

2,709,901

1,650,518

Ending balance: non-ACI and new loans individually evaluated for impairment

^[1]

14,362

6,728

Ending balance: non-ACI and new loans collectively evaluated for impairment

^[1]

2,419,283

1,297,597

Consumer [Member]

Allowance for loan and lease losses:

Ending balance: non-ACI and new loans individually evaluated for impairment

Ending balance: non-ACI and new loans collectively evaluated for impairment

Loans:

Ending balance of loans before premium, discount and deferred fees and costs

^[1]

19,793

6,309

Ending balance: non-ACI and new loans individually evaluated for impairment

^[1]

Ending balance: non-ACI and new loans collectively evaluated for impairment

^[1]

17,398

3,372

ACI loans [Member]

Allowance for loan and lease losses:

Ending Balance

9,922

16,332

Ending Balance: New Loans

Loans:

Ending balance of loans before premium, discount and deferred fees and costs

^[1]

1,795,299

2,102,561

ACI loans [Member] | Residential [Member]

Allowance for loan and lease losses:

Ending Balance

Loans:

Ending balance of loans before premium, discount and deferred fees and costs

^[1]

1,516,648

1,753,431

ACI loans [Member] | Commercial [Member]

Allowance for loan and lease losses:

Ending Balance

9,922

16,332

Loans:

Ending balance of loans before premium, discount and deferred fees and costs

^[1]

276,256

346,193

ACI loans [Member] | Consumer [Member]

Allowance for loan and lease losses:

Ending Balance

Loans:

Ending balance of loans before premium, discount and deferred fees and costs

^[1]

2,395

2,937

Non-ACI loans [Member]

Allowance for loan and lease losses:

Ending balance: non-ACI and new loans individually evaluated for impairment

998

593

Ending Balance

10,865

7,742

Non-ACI loans [Member] | Residential [Member]

Allowance for loan and lease losses:

Ending balance: non-ACI and new loans individually evaluated for impairment

924

593

Ending Balance

9,923

6,142

Non-ACI loans [Member] | Commercial [Member]

Allowance for loan and lease losses:

Ending balance: non-ACI and new loans individually evaluated for impairment

Ending Balance

942

1,600

Non-ACI loans [Member] | Consumer [Member]

Allowance for loan and lease losses:

Ending Balance

New Loans [Member]

Allowance for loan and lease losses:

Ending balance: non-ACI and new loans individually evaluated for impairment

1,227

Ending Balance: New Loans

39,629

24,328

New Loans [Member] | Residential [Member]

Allowance for loan and lease losses:

Ending balance: non-ACI and new loans individually evaluated for impairment

Ending Balance: New Loans

8,197

4,033

New Loans [Member] | Commercial [Member]

Allowance for loan and lease losses:

Ending balance: non-ACI and new loans individually evaluated for impairment

1,227

Ending Balance: New Loans

31,333

20,244

New Loans [Member] | Consumer [Member]

Allowance for loan and lease losses:

Ending Balance: New Loans

$ 99

$ 51

[1]	Ending balance of loans is before premiums, discounts, deferred fees and costs.

Loans and Allowance for Loan and Lease Losses (New Loans Identified as Impaired) (Details) - USD ($) $ in Thousands	Sep. 30, 2012	Dec. 31, 2011
Financing Receivable Impaired [Line Items]
Total Related Specific Allowance	$ 2,225	$ 593
Residential [Member]
Financing Receivable Impaired [Line Items]
Total Related Specific Allowance	924	593
Commercial [Member]
Financing Receivable Impaired [Line Items]
Total Related Specific Allowance	1,301	0
New Loans [Member]
Financing Receivable Impaired [Line Items]
Total Recorded investment in Impaired Loans	14,585	2,831
Total Unpaid Principal Balance	14,605	2,831
Total Related Specific Allowance	1,227	0
Total Non-Accrual Loans included in Impaired Loans	8,504	2,831
New Loans [Member] \| Residential [Member]
Financing Receivable Impaired [Line Items]
Total Recorded investment in Impaired Loans	1,352	27
Total Unpaid Principal Balance	1,389	27
Total Related Specific Allowance	0	0
Total Non-Accrual Loans included in Impaired Loans	0	27
New Loans [Member] \| Residential [Member] \| 1-4 single family residential [Member]
Financing Receivable Impaired [Line Items]
Recorded investment in Impaired Loans, With no specific allowance recorded	1,352
Unpaid Principal Balance, With no specific allowance recorded	1,389
Related Specific Allowance, With no specific allowance recorded	0
Non-Accrual Loans included in Impaired Loans, With no specific allowance recorded	0
New Loans [Member] \| Residential [Member] \| Home equity loans and lines of credit [Member]
Financing Receivable Impaired [Line Items]
Recorded investment in Impaired Loans, With no specific allowance recorded		27
Unpaid Principal Balance, With no specific allowance recorded		27
Related Specific Allowance, With no specific allowance recorded		0
Non-Accrual Loans included in Impaired Loans, With no specific allowance recorded		27
New Loans [Member] \| Commercial [Member]
Financing Receivable Impaired [Line Items]
Total Recorded investment in Impaired Loans	13,233	2,804
Total Unpaid Principal Balance	13,216	2,804
Total Related Specific Allowance	1,227	0
Total Non-Accrual Loans included in Impaired Loans	8,504	2,804
New Loans [Member] \| Commercial [Member] \| Multi-family [Member]
Financing Receivable Impaired [Line Items]
Recorded investment in Impaired Loans, With no specific allowance recorded	3,663
Unpaid Principal Balance, With no specific allowance recorded	3,663
Related Specific Allowance, With no specific allowance recorded	0
Non-Accrual Loans included in Impaired Loans, With no specific allowance recorded	0
New Loans [Member] \| Commercial [Member] \| Commercial real estate [Member]
Financing Receivable Impaired [Line Items]
Recorded investment in Impaired Loans, With no specific allowance recorded	1,629
Unpaid Principal Balance, With no specific allowance recorded	1,629
Related Specific Allowance, With no specific allowance recorded	0
Non-Accrual Loans included in Impaired Loans, With no specific allowance recorded	1,629
New Loans [Member] \| Commercial [Member] \| Construction [Member]
Financing Receivable Impaired [Line Items]
Recorded investment in Impaired Loans, With no specific allowance recorded		3
Unpaid Principal Balance, With no specific allowance recorded		3
Related Specific Allowance, With no specific allowance recorded		0
Non-Accrual Loans included in Impaired Loans, With no specific allowance recorded		3
New Loans [Member] \| Commercial [Member] \| Land [Member]
Financing Receivable Impaired [Line Items]
Recorded investment in Impaired Loans, With no specific allowance recorded	286	332
Unpaid Principal Balance, With no specific allowance recorded	278	332
Related Specific Allowance, With no specific allowance recorded	0	0
Non-Accrual Loans included in Impaired Loans, With no specific allowance recorded	286	332
New Loans [Member] \| Commercial [Member] \| Commercial loans and leases [Member]
Financing Receivable Impaired [Line Items]
Recorded investment in Impaired Loans, With no specific allowance recorded	4,908	2,469
Recorded investment in Impaired Loans, With a specific allowance recorded	2,747	0
Unpaid Principal Balance, With no specific allowance recorded	4,899	2,469
Unpaid Principal Balance, With a specific allowance recorded	2,747	0
Related Specific Allowance, With no specific allowance recorded	0	0
Related Specific allowance, With a specific allowance recorded	1,227	0
Non-Accrual Loans included in Impaired Loans, With no specific allowance recorded	3,842	2,469
Non-Accrual Loans included in Impaired Loans, With a specific allowance recorded	$ 2,747	$ 0

Loans and Allowance for Loan and Lease Losses (Non-ACI Loans Identified as Impaired) (Details) - USD ($) $ in Thousands	Sep. 30, 2012	Dec. 31, 2011
Financing Receivable Impaired [Line Items]
Total Related Allowance	$ 2,225	$ 593
Residential [Member]
Financing Receivable Impaired [Line Items]
Total Related Allowance	924	593
Commercial [Member]
Financing Receivable Impaired [Line Items]
Total Related Allowance	1,301	0
Non-ACI loans [Member]
Financing Receivable Impaired [Line Items]
Total Recorded investment in Impaired Loans	23,683	26,633
Total Unpaid Principal Balance	26,377	29,555
Total Related Allowance	998	593
Total Non-Accrual Loans included in Impaired Loans	20,310	24,851
Non-ACI loans [Member] \| Residential [Member]
Financing Receivable Impaired [Line Items]
Total Recorded investment in Impaired Loans	17,944	19,643
Total Unpaid Principal Balance	20,456	22,373
Total Related Allowance	924	593
Total Non-Accrual Loans included in Impaired Loans	14,628	17,861
Non-ACI loans [Member] \| Residential [Member] \| 1-4 single family residential [Member]
Financing Receivable Impaired [Line Items]
Recorded investment in Impaired Loans, With no specific allowance recorded	4,296	7,671
Recorded investment in Impaired Loans, With a specific allowance recorded	3,516	1,521
Unpaid Principal Balance, With no specific allowance recorded	5,566	9,766
Unpaid Principal Balance, With a specific allowance recorded	4,557	1,937
Related Specific Allowance, With no specific allowance recorded	0	0
Related Specific allowance, With a specific allowance recorded	924	593
Non-Accrual Loans included in Impaired Loans, With no specific allowance recorded	4,166	7,296
Non-Accrual Loans included in Impaired Loans, With a specific allowance recorded	330	114
Non-ACI loans [Member] \| Residential [Member] \| Home equity loans and lines of credit [Member]
Financing Receivable Impaired [Line Items]
Recorded investment in Impaired Loans, With no specific allowance recorded	10,132	10,451
Unpaid Principal Balance, With no specific allowance recorded	10,333	10,670
Related Specific Allowance, With no specific allowance recorded	0	0
Non-Accrual Loans included in Impaired Loans, With no specific allowance recorded	10,132	10,451
Non-ACI loans [Member] \| Commercial [Member]
Financing Receivable Impaired [Line Items]
Total Recorded investment in Impaired Loans	5,739	6,990
Total Unpaid Principal Balance	5,921	7,182
Total Related Allowance	74	0
Total Non-Accrual Loans included in Impaired Loans	5,682	6,990
Non-ACI loans [Member] \| Commercial [Member] \| Commercial real estate [Member]
Financing Receivable Impaired [Line Items]
Recorded investment in Impaired Loans, With no specific allowance recorded	105	295
Unpaid Principal Balance, With no specific allowance recorded	105	295
Related Specific Allowance, With no specific allowance recorded	0	0
Non-Accrual Loans included in Impaired Loans, With no specific allowance recorded	105	295
Non-ACI loans [Member] \| Commercial [Member] \| Commercial loans and leases [Member]
Financing Receivable Impaired [Line Items]
Recorded investment in Impaired Loans, With no specific allowance recorded	1,957	6,695
Recorded investment in Impaired Loans, With a specific allowance recorded	3,677
Unpaid Principal Balance, With no specific allowance recorded	2,139	6,887
Unpaid Principal Balance, With a specific allowance recorded	3,677
Related Specific Allowance, With no specific allowance recorded	0	0
Related Specific allowance, With a specific allowance recorded	74
Non-Accrual Loans included in Impaired Loans, With no specific allowance recorded	1,900	$ 6,695
Non-Accrual Loans included in Impaired Loans, With a specific allowance recorded	$ 3,677

Loans and Allowance for Loan and Lease Losses (Non-ACI and New Loans that were Modified in Troubled Debt Restructurings) (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2012 USD ($)	Sep. 30, 2011 USD ($)	Sep. 30, 2012 USD ($)	Sep. 30, 2011 USD ($)
Non-ACI loans [Member]
Financing Receivable Modifications [Line Items]
Loans Modified in TDRs during the period, Number of TDRs	3	3	6	12
Loans Modified in TDRs during the period, Recorded Investment	$ 2,098	$ 930	$ 2,098	$ 930
Loans Modified in TDRs during the period, Recorded Investment, During Three Months Ending Period	$ 265	$ 97	$ 265	$ 97
TDRs experiencing payment defaults during the period, Number of TDRs	1	0	2	4
TDRs experiencing payment defaults during the period, Recorded Investment	$ 294	$ 296	$ 294	$ 296
TDRs experiencing payment defaults during the period, Recorded Investment, During Three Months Ending Period	$ 121	$ 0	$ 121	$ 0
Non-ACI loans [Member] \| 1-4 single family residential [Member]
Financing Receivable Modifications [Line Items]
Loans Modified in TDRs during the period, Number of TDRs	2	1	4	8
Loans Modified in TDRs during the period, Recorded Investment	$ 2,072	$ 786	$ 2,072	$ 786
Loans Modified in TDRs during the period, Recorded Investment, During Three Months Ending Period	$ 248	$ 66	$ 248	$ 66
TDRs experiencing payment defaults during the period, Number of TDRs	1	0	2	2
TDRs experiencing payment defaults during the period, Recorded Investment	$ 294	$ 183	$ 294	$ 183
TDRs experiencing payment defaults during the period, Recorded Investment, During Three Months Ending Period	121	0	$ 121	$ 0
Non-ACI loans [Member] \| Commercial real estate [Member]
Financing Receivable Modifications [Line Items]
Loans Modified in TDRs during the period, Number of TDRs			0	1
Loans Modified in TDRs during the period, Recorded Investment	0	69	$ 0	$ 69
TDRs experiencing payment defaults during the period, Number of TDRs			0	1
TDRs experiencing payment defaults during the period, Recorded Investment	$ 0	$ 69	$ 0	$ 69
Non-ACI loans [Member] \| Commercial loans and leases [Member]
Financing Receivable Modifications [Line Items]
Loans Modified in TDRs during the period, Number of TDRs	1	2	2	3
Loans Modified in TDRs during the period, Recorded Investment	$ 26	$ 75	$ 26	$ 75
Loans Modified in TDRs during the period, Recorded Investment, During Three Months Ending Period	$ 17	$ 31	$ 17	$ 31
TDRs experiencing payment defaults during the period, Number of TDRs	0	0	0	1
TDRs experiencing payment defaults during the period, Recorded Investment	$ 0	$ 44	$ 0	$ 44
TDRs experiencing payment defaults during the period, Recorded Investment, During Three Months Ending Period	$ 0	$ 0	$ 0	$ 0
New Loans [Member]
Financing Receivable Modifications [Line Items]
Loans Modified in TDRs during the period, Number of TDRs	3	1	7	1
Loans Modified in TDRs during the period, Recorded Investment	$ 5,349	$ 231	$ 5,349	$ 231
Loans Modified in TDRs during the period, Recorded Investment, During Three Months Ending Period	$ 688	$ 231	$ 688	$ 231
TDRs experiencing payment defaults during the period, Number of TDRs	0	0	1	0
TDRs experiencing payment defaults during the period, Recorded Investment	$ 245	$ 0	$ 245	$ 0
TDRs experiencing payment defaults during the period, Recorded Investment, During Three Months Ending Period	$ 0	$ 0	$ 0	$ 0
New Loans [Member] \| Commercial loans and leases [Member]
Financing Receivable Modifications [Line Items]
Loans Modified in TDRs during the period, Number of TDRs	3	1	6	1
Loans Modified in TDRs during the period, Recorded Investment	$ 1,686	$ 231	$ 1,686	$ 231
Loans Modified in TDRs during the period, Recorded Investment, During Three Months Ending Period	$ 688	$ 231	$ 688	$ 231
TDRs experiencing payment defaults during the period, Number of TDRs	0	0	1	0
TDRs experiencing payment defaults during the period, Recorded Investment	$ 245	$ 0	$ 245	$ 0
TDRs experiencing payment defaults during the period, Recorded Investment, During Three Months Ending Period	0	0	$ 0	$ 0
New Loans [Member] \| Multi-family [Member]
Financing Receivable Modifications [Line Items]
Loans Modified in TDRs during the period, Number of TDRs			1	0
Loans Modified in TDRs during the period, Recorded Investment	3,663	0	$ 3,663	$ 0
TDRs experiencing payment defaults during the period, Number of TDRs			0	0
TDRs experiencing payment defaults during the period, Recorded Investment	$ 0	$ 0	$ 0	$ 0

Loans and Allowance for Loan and Lease Losses (Average Recorded Investment in Impaired Non-ACI and New Loans) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Non-ACI loans [Member]
Average Recorded Investment in Impaired Loans [Line Items]
Average recorded investment in impaired loans	$ 23,349	$ 31,881	$ 24,994	$ 29,461
Non-ACI loans [Member] \| Residential [Member]
Average Recorded Investment in Impaired Loans [Line Items]
Average recorded investment in impaired loans	17,545	20,674	18,790	20,382
Non-ACI loans [Member] \| Residential [Member] \| 1-4 single family residential [Member]
Average Recorded Investment in Impaired Loans [Line Items]
Average recorded investment in impaired loans	7,750	9,905	8,318	9,528
Non-ACI loans [Member] \| Residential [Member] \| Home equity loans and lines of credit [Member]
Average Recorded Investment in Impaired Loans [Line Items]
Average recorded investment in impaired loans	9,795	10,769	10,472	10,854
Non-ACI loans [Member] \| Commercial [Member]
Average Recorded Investment in Impaired Loans [Line Items]
Average recorded investment in impaired loans	5,804	11,207	6,204	9,079
Non-ACI loans [Member] \| Commercial [Member] \| Multi-family [Member]
Average Recorded Investment in Impaired Loans [Line Items]
Average recorded investment in impaired loans	0	30	0	192
Non-ACI loans [Member] \| Commercial [Member] \| Commercial real estate [Member]
Average Recorded Investment in Impaired Loans [Line Items]
Average recorded investment in impaired loans	134	417	204	357
Non-ACI loans [Member] \| Commercial [Member] \| Construction [Member]
Average Recorded Investment in Impaired Loans [Line Items]
Average recorded investment in impaired loans	0	0	0	0
Non-ACI loans [Member] \| Commercial [Member] \| Land [Member]
Average Recorded Investment in Impaired Loans [Line Items]
Average recorded investment in impaired loans	0	0	0	0
Non-ACI loans [Member] \| Commercial [Member] \| Commercial loans and leases [Member]
Average Recorded Investment in Impaired Loans [Line Items]
Average recorded investment in impaired loans	5,670	10,760	6,000	8,530
New Loans [Member]
Average Recorded Investment in Impaired Loans [Line Items]
Average recorded investment in impaired loans	13,397	3,862	9,936	3,641
New Loans [Member] \| Residential [Member]
Average Recorded Investment in Impaired Loans [Line Items]
Average recorded investment in impaired loans	715	1,000	400	500
New Loans [Member] \| Residential [Member] \| 1-4 single family residential [Member]
Average Recorded Investment in Impaired Loans [Line Items]
Average recorded investment in impaired loans	715	1,000	393	500
New Loans [Member] \| Residential [Member] \| Home equity loans and lines of credit [Member]
Average Recorded Investment in Impaired Loans [Line Items]
Average recorded investment in impaired loans	0	0	7	0
New Loans [Member] \| Commercial [Member]
Average Recorded Investment in Impaired Loans [Line Items]
Average recorded investment in impaired loans	12,682	2,862	9,536	3,141
New Loans [Member] \| Commercial [Member] \| Multi-family [Member]
Average Recorded Investment in Impaired Loans [Line Items]
Average recorded investment in impaired loans	4,613	0	3,228	0
New Loans [Member] \| Commercial [Member] \| Commercial real estate [Member]
Average Recorded Investment in Impaired Loans [Line Items]
Average recorded investment in impaired loans	815	0	407	0
New Loans [Member] \| Commercial [Member] \| Construction [Member]
Average Recorded Investment in Impaired Loans [Line Items]
Average recorded investment in impaired loans	2	3	2	2
New Loans [Member] \| Commercial [Member] \| Land [Member]
Average Recorded Investment in Impaired Loans [Line Items]
Average recorded investment in impaired loans	291	332	313	249
New Loans [Member] \| Commercial [Member] \| Commercial loans and leases [Member]
Average Recorded Investment in Impaired Loans [Line Items]
Average recorded investment in impaired loans	$ 6,961	$ 2,527	$ 5,586	$ 2,890

Loans and Allowance for Loan and Lease Losses (Residential Credit Exposure on Non-ACI and New Loans Based on Delinquency Status) (Details) - USD ($) $ in Thousands	Sep. 30, 2012	Dec. 31, 2011
Financing Receivable Investment Past Due [Line Items]
Total Loans	$ 5,301,481	$ 4,137,058
New Loans [Member]
Financing Receivable Investment Past Due [Line Items]
Current	3,234,262	1,690,874
Past due 90 days or more	4,927	1,628
Total Loans	3,253,723	1,710,027
New Loans [Member] \| 1-4 single family residential [Member]
Financing Receivable Investment Past Due [Line Items]
Current	819,916	450,661
Past due 90 days or more	1,351	0
Total Loans	821,310	466,593
New Loans [Member] \| Home equity loans and lines of credit [Member]
Financing Receivable Investment Past Due [Line Items]
Current	2,108	1,996
Past due 90 days or more	0	27
Total Loans	2,108	2,037
New Loans [Member] \| Residential [Member] \| 1-4 single family residential [Member]
Financing Receivable Investment Past Due [Line Items]
Current	816,916	450,661
Past due less then 90 days	3,043	15,932
Past due 90 days or more	1,351	0
Total Loans	821,310	466,593
New Loans [Member] \| Residential [Member] \| Home equity loans and lines of credit [Member]
Financing Receivable Investment Past Due [Line Items]
Current	2,108	1,996
Past due less then 90 days	0	14
Past due 90 days or more	0	27
Total Loans	2,108	2,037
Non-ACI loans [Member]
Financing Receivable Investment Past Due [Line Items]
Current	225,369	294,081
Past due 90 days or more	18,588	20,501
Total Loans	252,459	324,470
Non-ACI loans [Member] \| 1-4 single family residential [Member]
Financing Receivable Investment Past Due [Line Items]
Current	70,133	83,075
Past due 90 days or more	3,803	6,624
Total Loans	77,026	92,671
Non-ACI loans [Member] \| Home equity loans and lines of credit [Member]
Financing Receivable Investment Past Due [Line Items]
Current	142,929	164,367
Past due 90 days or more	10,132	7,825
Total Loans	158,230	178,999
Non-ACI loans [Member] \| Residential [Member] \| 1-4 single family residential [Member]
Financing Receivable Investment Past Due [Line Items]
Current	70,133	83,075
Past due less then 90 days	3,090	2,972
Past due 90 days or more	3,803	6,624
Total Loans	77,026	92,671
Non-ACI loans [Member] \| Residential [Member] \| Home equity loans and lines of credit [Member]
Financing Receivable Investment Past Due [Line Items]
Current	142,929	164,367
Past due less then 90 days	5,169	6,807
Past due 90 days or more	10,132	7,825
Total Loans	158,230	178,999
New and Non-ACI loans [Member]
Financing Receivable Investment Past Due [Line Items]
Current	3,459,631	1,984,955
Past due 90 days or more	23,515	22,129
Total Loans	3,506,182	2,034,497
New and Non-ACI loans [Member] \| Residential [Member] \| 1-4 single family residential [Member]
Financing Receivable Investment Past Due [Line Items]
Total Loans	898,336	559,264
New and Non-ACI loans [Member] \| Residential [Member] \| Home equity loans and lines of credit [Member]
Financing Receivable Investment Past Due [Line Items]
Total Loans	$ 160,338	$ 181,036

Loans and Allowance for Loan and Lease Losses (Consumer Credit Exposure on Non-ACI and New Loans Based on Delinquency Status) (Details) - USD ($) $ in Thousands	Sep. 30, 2012	Dec. 31, 2011
Financing Receivable Investment Past Due [Line Items]
Total Loans	$ 5,301,481	$ 4,137,058
New Loans [Member]
Financing Receivable Investment Past Due [Line Items]
Current	3,234,262	1,690,874
Total Loans	3,253,723	1,710,027
New Loans [Member] \| Consumer [Member]
Financing Receivable Investment Past Due [Line Items]
Current	17,405	3,387
Past due less then 90 days	7	10
Total Loans	$ 17,412	$ 3,397

Loans and Allowance for Loan and Lease Losses (Aging of Past Due Loans in the Non-ACI and New Loan Portfolios) (Details) - USD ($) $ in Thousands	Sep. 30, 2012	Dec. 31, 2011
Financing Receivable Investment Past Due [Line Items]
Total Loans	$ 5,301,481	$ 4,137,058
New Loans [Member]
Financing Receivable Investment Past Due [Line Items]
Current	3,234,262	1,690,874
30-59 Days Past Due	12,468	17,076
60-89 Days Past Due	2,066	449
90 Days or More Past Due or in Foreclosure	4,927	1,628
Total Loans	3,253,723	1,710,027
New Loans [Member] \| Consumer [Member]
Financing Receivable Investment Past Due [Line Items]
Current	17,405	3,387
30-59 Days Past Due	7	10
60-89 Days Past Due	0	0
90 Days or More Past Due or in Foreclosure	0	0
Total Loans	17,412	3,397
New Loans [Member] \| 1-4 single family residential [Member]
Financing Receivable Investment Past Due [Line Items]
Current	819,916	450,661
30-59 Days Past Due	3,043	15,790
60-89 Days Past Due	0	142
90 Days or More Past Due or in Foreclosure	1,351	0
Total Loans	821,310	466,593
New Loans [Member] \| Home equity loans and lines of credit [Member]
Financing Receivable Investment Past Due [Line Items]
Current	2,108	1,996
30-59 Days Past Due	0	14
60-89 Days Past Due	0	0
90 Days or More Past Due or in Foreclosure	0	27
Total Loans	2,108	2,037
New Loans [Member] \| Multi-family [Member]
Financing Receivable Investment Past Due [Line Items]
Current	302,937	107,010
30-59 Days Past Due	0	913
60-89 Days Past Due	0	0
90 Days or More Past Due or in Foreclosure	0	0
Total Loans	302,937	107,923
New Loans [Member] \| Commercial real estate [Member]
Financing Receivable Investment Past Due [Line Items]
Current	643,892	310,008
30-59 Days Past Due	0	0
60-89 Days Past Due	0	0
90 Days or More Past Due or in Foreclosure	1,629	0
Total Loans	645,521	310,008
New Loans [Member] \| Construction [Member]
Financing Receivable Investment Past Due [Line Items]
Current	43,754	23,086
30-59 Days Past Due	0	0
60-89 Days Past Due	0	0
90 Days or More Past Due or in Foreclosure	0	3
Total Loans	43,754	23,089
New Loans [Member] \| Land [Member]
Financing Receivable Investment Past Due [Line Items]
Current	27,107	7,115
30-59 Days Past Due	0	0
60-89 Days Past Due	0	0
90 Days or More Past Due or in Foreclosure	0	332
Total Loans	27,107	7,447
New Loans [Member] \| Commercial loans and leases [Member]
Financing Receivable Investment Past Due [Line Items]
Current	1,380,143	787,611
30-59 Days Past Due	9,418	349
60-89 Days Past Due	2,066	307
90 Days or More Past Due or in Foreclosure	1,947	1,266
Total Loans	1,393,574	789,533
Non-ACI loans [Member]
Financing Receivable Investment Past Due [Line Items]
Current	225,369	294,081
30-59 Days Past Due	6,844	6,102
60-89 Days Past Due	1,658	3,786
90 Days or More Past Due or in Foreclosure	18,588	20,501
Total Loans	252,459	324,470
Non-ACI loans [Member] \| 1-4 single family residential [Member]
Financing Receivable Investment Past Due [Line Items]
Current	70,133	83,075
30-59 Days Past Due	2,289	1,812
60-89 Days Past Due	801	1,160
90 Days or More Past Due or in Foreclosure	3,803	6,624
Total Loans	77,026	92,671
Non-ACI loans [Member] \| Home equity loans and lines of credit [Member]
Financing Receivable Investment Past Due [Line Items]
Current	142,929	164,367
30-59 Days Past Due	4,461	4,181
60-89 Days Past Due	708	2,626
90 Days or More Past Due or in Foreclosure	10,132	7,825
Total Loans	158,230	178,999
Non-ACI loans [Member] \| Multi-family [Member]
Financing Receivable Investment Past Due [Line Items]
Current	727	774
30-59 Days Past Due	0	0
60-89 Days Past Due	0	0
90 Days or More Past Due or in Foreclosure	0	0
Total Loans	727	774
Non-ACI loans [Member] \| Commercial real estate [Member]
Financing Receivable Investment Past Due [Line Items]
Current	2,477	32,383
30-59 Days Past Due	0	0
60-89 Days Past Due	0	0
90 Days or More Past Due or in Foreclosure	0	295
Total Loans	2,477	32,678
Non-ACI loans [Member] \| Construction [Member]
Financing Receivable Investment Past Due [Line Items]
Total Loans	0	0
Non-ACI loans [Member] \| Land [Member]
Financing Receivable Investment Past Due [Line Items]
Current	157	164
30-59 Days Past Due	0	0
60-89 Days Past Due	0	0
90 Days or More Past Due or in Foreclosure	0	0
Total Loans	157	164
Non-ACI loans [Member] \| Commercial loans and leases [Member]
Financing Receivable Investment Past Due [Line Items]
Current	8,946	13,318
30-59 Days Past Due	94	109
60-89 Days Past Due	149	0
90 Days or More Past Due or in Foreclosure	4,653	5,757
Total Loans	13,842	19,184
New and Non-ACI loans [Member]
Financing Receivable Investment Past Due [Line Items]
Current	3,459,631	1,984,955
30-59 Days Past Due	19,312	23,178
60-89 Days Past Due	3,724	4,235
90 Days or More Past Due or in Foreclosure	23,515	22,129
Total Loans	3,506,182	2,034,497
New and Non-ACI loans [Member] \| Multi-family [Member]
Financing Receivable Investment Past Due [Line Items]
Total Loans	303,664	108,697
New and Non-ACI loans [Member] \| Commercial real estate [Member]
Financing Receivable Investment Past Due [Line Items]
Total Loans	647,998	342,686
New and Non-ACI loans [Member] \| Construction [Member]
Financing Receivable Investment Past Due [Line Items]
Total Loans	43,754	23,089
New and Non-ACI loans [Member] \| Land [Member]
Financing Receivable Investment Past Due [Line Items]
Total Loans	27,264	7,611
New and Non-ACI loans [Member] \| Commercial loans and leases [Member]
Financing Receivable Investment Past Due [Line Items]
Total Loans	$ 1,407,416	$ 808,717

Loans and Allowance for Loan and Lease Losses (Changes in the Accretable Yield on ACI Loans) (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2012	Dec. 31, 2011
Loans and Allowance for Loan Losses [Abstract]
Balance, beginning of period	$ 1,523,615	$ 1,833,974
Reclassifications from non-accretable difference	83,508	135,933
Accretion	(321,177)	(446,292)
Balance, ending of period	$ 1,285,946	$ 1,523,615

Loans and Allowance for Loan and Lease Losses (Carrying Amount of ACI Loans) (Details) - ACI loans [Member] - USD ($) $ in Thousands	Sep. 30, 2012	Dec. 31, 2011
Financing Receivable Impaired [Line Items]
Total Recorded investment in Impaired Loans or Pools	$ 66,801	$ 94,536
Total Unpaid Principal Balance	89,537	125,906
Total Related Allowance	9,922	16,332
Residential [Member]
Financing Receivable Impaired [Line Items]
Total Recorded investment in Impaired Loans or Pools	0	0
Total Unpaid Principal Balance	0	0
Total Related Allowance	0	0
Commercial [Member]
Financing Receivable Impaired [Line Items]
Total Recorded investment in Impaired Loans or Pools	66,801	94,536
Total Unpaid Principal Balance	89,537	125,906
Total Related Allowance	9,922	16,332
Commercial [Member] \| Multi-family [Member]
Financing Receivable Impaired [Line Items]
Recorded investment in Impaired Loans or Pools, With a specific allowance recorded	8,743	11,144
Unpaid Principal Balance, With a specific allowance recorded	9,929	13,497
Related Allowance, With a specific allowance recorded	760	1,063
Commercial [Member] \| Commercial real estate [Member]
Financing Receivable Impaired [Line Items]
Recorded investment in Impaired Loans or Pools, With no specific allowance recorded	110
Recorded investment in Impaired Loans or Pools, With a specific allowance recorded	40,448	49,876
Unpaid Principal Balance, With no specific allowance recorded	184
Unpaid Principal Balance, With a specific allowance recorded	51,948	67,698
Related Allowance, With no specific allowance recorded	0
Related Allowance, With a specific allowance recorded	6,451	10,672
Commercial [Member] \| Construction [Member]
Financing Receivable Impaired [Line Items]
Recorded investment in Impaired Loans or Pools, With a specific allowance recorded		3,467
Unpaid Principal Balance, With a specific allowance recorded		11,678
Related Allowance, With a specific allowance recorded		991
Commercial [Member] \| Land [Member]
Financing Receivable Impaired [Line Items]
Recorded investment in Impaired Loans or Pools, With no specific allowance recorded	500	435
Recorded investment in Impaired Loans or Pools, With a specific allowance recorded	5,211	12,700
Unpaid Principal Balance, With no specific allowance recorded	690	751
Unpaid Principal Balance, With a specific allowance recorded	14,509	13,838
Related Allowance, With no specific allowance recorded	0	0
Related Allowance, With a specific allowance recorded	517	1,319
Commercial [Member] \| Commercial loans and leases [Member]
Financing Receivable Impaired [Line Items]
Recorded investment in Impaired Loans or Pools, With no specific allowance recorded	238
Recorded investment in Impaired Loans or Pools, With a specific allowance recorded	11,551	16,914
Unpaid Principal Balance, With no specific allowance recorded	238
Unpaid Principal Balance, With a specific allowance recorded	12,039	18,444
Related Allowance, With no specific allowance recorded	0
Related Allowance, With a specific allowance recorded	$ 2,194	$ 2,287

Loans and Allowance for Loan and Lease Losses (ACI Loans that were Modified in Troubled Debt Restructurings) (Details) - ACI loans [Member] $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2012 USD ($)	Sep. 30, 2011 USD ($)	Sep. 30, 2012 USD ($)	Sep. 30, 2011 USD ($)
Financing Receivable Modifications [Line Items]
Loans Modified in TDRs during the period, Number of TDRs	2	0	6	7
Loans Modified in TDRs during the period, Recorded Investment	$ 569	$ 1,997	$ 569	$ 1,997
TDRs experiencing payment defaults during the period, Number of TDRs	0	0	0	5
Loans Modified in TDRs during the period, Recorded Investment, During Three Months Ending Period	$ 152	$ 0	$ 152	$ 0
TDRs experiencing payment defaults during the period, Recorded Investment	0	1,697	0	1,697
TDRs experiencing payment defaults during the period, Recorded Investment, During Three Months Ending Period	$ 0	$ 0	$ 0	$ 0
Commercial real estate [Member]
Financing Receivable Modifications [Line Items]
Loans Modified in TDRs during the period, Number of TDRs	2	0	3	4
Loans Modified in TDRs during the period, Recorded Investment	$ 252	$ 1,037	$ 252	$ 1,037
TDRs experiencing payment defaults during the period, Number of TDRs	0	0	0	3
Loans Modified in TDRs during the period, Recorded Investment, During Three Months Ending Period	$ 152	$ 0	$ 152	$ 0
TDRs experiencing payment defaults during the period, Recorded Investment	0	801	0	801
TDRs experiencing payment defaults during the period, Recorded Investment, During Three Months Ending Period	0	0	$ 0	$ 0
Land [Member]
Financing Receivable Modifications [Line Items]
Loans Modified in TDRs during the period, Number of TDRs			0	2
Loans Modified in TDRs during the period, Recorded Investment	0	896	$ 0	$ 896
TDRs experiencing payment defaults during the period, Number of TDRs			0	2
TDRs experiencing payment defaults during the period, Recorded Investment	0	896	$ 0	$ 896
Commercial loans and leases [Member]
Financing Receivable Modifications [Line Items]
Loans Modified in TDRs during the period, Number of TDRs			3	0
Loans Modified in TDRs during the period, Recorded Investment	317	0	$ 317	$ 0
TDRs experiencing payment defaults during the period, Number of TDRs			0	0
TDRs experiencing payment defaults during the period, Recorded Investment	0	0	$ 0	$ 0
Construction [Member]
Financing Receivable Modifications [Line Items]
Loans Modified in TDRs during the period, Number of TDRs			0	1
Loans Modified in TDRs during the period, Recorded Investment	0	64	$ 0	$ 64
TDRs experiencing payment defaults during the period, Number of TDRs			0	0
TDRs experiencing payment defaults during the period, Recorded Investment	$ 0	$ 0	$ 0	$ 0

Loans and Allowance for Loan and Lease Losses (Average Recorded Investment in Impaired ACI Loans) (Details) - ACI loans [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Financing Receivable Impaired [Line Items]
Average recorded investment in impaired loans	$ 77,399	$ 160,167	$ 88,100	$ 209,427
Residential [Member]
Financing Receivable Impaired [Line Items]
Average recorded investment in impaired loans	0	36,493	0	57,434
Residential [Member] \| Home equity loans and lines of credit [Member]
Financing Receivable Impaired [Line Items]
Average recorded investment in impaired loans	0	36,493	0	57,434
Commercial [Member]
Financing Receivable Impaired [Line Items]
Average recorded investment in impaired loans	77,399	123,674	88,100	151,993
Commercial [Member] \| Multi-family [Member]
Financing Receivable Impaired [Line Items]
Average recorded investment in impaired loans	11,023	20,397	13,264	34,221
Commercial [Member] \| Commercial real estate [Member]
Financing Receivable Impaired [Line Items]
Average recorded investment in impaired loans	42,877	62,090	46,491	64,144
Commercial [Member] \| Construction [Member]
Financing Receivable Impaired [Line Items]
Average recorded investment in impaired loans	703	4,051	2,147	4,532
Commercial [Member] \| Land [Member]
Financing Receivable Impaired [Line Items]
Average recorded investment in impaired loans	10,300	16,080	12,109	23,478
Commercial [Member] \| Commercial loans and leases [Member]
Financing Receivable Impaired [Line Items]
Average recorded investment in impaired loans	$ 12,496	$ 21,056	$ 14,089	$ 25,618

Loans and Allowance for Loan and Lease Losses (Residential Credit Exposure on ACI Loans Based on Delinquency Status) (Details) - USD ($) $ in Thousands	Sep. 30, 2012	Dec. 31, 2011
Financing Receivable Investment Past Due [Line Items]
Total Loans	$ 5,301,481	$ 4,137,058
ACI loans [Member]
Financing Receivable Investment Past Due [Line Items]
Current	1,436,161	1,643,121
Past due 90 days or more	274,827	361,155
Total Loans	1,795,299	2,102,561
ACI loans [Member] \| 1-4 single family residential [Member]
Financing Receivable Investment Past Due [Line Items]
Current	1,141,314	1,278,887
Past due 90 days or more	239,175	310,764
Total Loans	1,458,170	1,681,866
ACI loans [Member] \| Home equity loans and lines of credit [Member]
Financing Receivable Investment Past Due [Line Items]
Current	46,373	57,290
Past due 90 days or more	9,687	10,948
Total Loans	58,478	71,565
ACI loans [Member] \| Residential [Member] \| 1-4 single family residential [Member]
Financing Receivable Investment Past Due [Line Items]
Current	1,141,314	1,278,887
Past due less then 90 days	77,681	92,215
Past due 90 days or more	239,175	310,764
Total Loans	1,458,170	1,681,866
ACI loans [Member] \| Residential [Member] \| Home equity loans and lines of credit [Member]
Financing Receivable Investment Past Due [Line Items]
Current	46,373	57,290
Past due less then 90 days	2,418	3,327
Past due 90 days or more	9,687	10,948
Total Loans	$ 58,478	$ 71,565

Loans and Allowance for Loan and Lease Losses (Consumer Credit Exposure on ACI Loans Based on Delinquency Status) (Details) - USD ($) $ in Thousands	Sep. 30, 2012	Dec. 31, 2011
Financing Receivable Investment Past Due [Line Items]
Total Loans	$ 5,301,481	$ 4,137,058
ACI loans [Member]
Financing Receivable Investment Past Due [Line Items]
Current	1,436,161	1,643,121
Past due 90 days or more	274,827	361,155
Total Loans	1,795,299	2,102,561
ACI loans [Member] \| Consumer [Member]
Financing Receivable Investment Past Due [Line Items]
Current	2,373	2,866
Past due less then 90 days	15	33
Past due 90 days or more	7	38
Total Loans	$ 2,395	$ 2,937

Loans and Allowance for Loan and Lease Losses (Aging of Past Due Loans in the ACI Portfolio) (Details) - USD ($) $ in Thousands	Sep. 30, 2012	Dec. 31, 2011
Financing Receivable Investment Past Due [Line Items]
Total Loans	$ 5,301,481	$ 4,137,058
ACI loans [Member]
Financing Receivable Investment Past Due [Line Items]
Current	1,436,161	1,643,121
30-59 Days Past Due	62,156	70,646
60-89 Days Past Due	22,155	27,639
90 Days or More Past Due or in Foreclosure	274,827	361,155
Total Loans	1,795,299	2,102,561
ACI loans [Member] \| Consumer [Member]
Financing Receivable Investment Past Due [Line Items]
Current	2,373	2,866
30-59 Days Past Due	15	25
60-89 Days Past Due	0	8
90 Days or More Past Due or in Foreclosure	7	38
Total Loans	2,395	2,937
ACI loans [Member] \| 1-4 single family residential [Member]
Financing Receivable Investment Past Due [Line Items]
Current	1,141,314	1,278,887
30-59 Days Past Due	58,659	66,767
60-89 Days Past Due	19,022	25,448
90 Days or More Past Due or in Foreclosure	239,175	310,764
Total Loans	1,458,170	1,681,866
ACI loans [Member] \| Home equity loans and lines of credit [Member]
Financing Receivable Investment Past Due [Line Items]
Current	46,373	57,290
30-59 Days Past Due	1,747	2,500
60-89 Days Past Due	671	827
90 Days or More Past Due or in Foreclosure	9,687	10,948
Total Loans	58,478	71,565
ACI loans [Member] \| Multi-family [Member]
Financing Receivable Investment Past Due [Line Items]
Current	45,423	49,116
30-59 Days Past Due	0	0
60-89 Days Past Due	2,315	674
90 Days or More Past Due or in Foreclosure	10,049	11,920
Total Loans	57,787	61,710
ACI loans [Member] \| Commercial real estate [Member]
Financing Receivable Investment Past Due [Line Items]
Current	179,146	212,253
30-59 Days Past Due	1,735	1,292
60-89 Days Past Due	0	459
90 Days or More Past Due or in Foreclosure	2,674	9,352
Total Loans	183,555	223,356
ACI loans [Member] \| Construction [Member]
Financing Receivable Investment Past Due [Line Items]
Current	726	635
30-59 Days Past Due	0	0
60-89 Days Past Due	0	0
90 Days or More Past Due or in Foreclosure	1,964	3,467
Total Loans	2,690	4,102
ACI loans [Member] \| Land [Member]
Financing Receivable Investment Past Due [Line Items]
Current	9,922	24,396
30-59 Days Past Due	0	0
60-89 Days Past Due	0	0
90 Days or More Past Due or in Foreclosure	6,271	8,622
Total Loans	16,193	33,018
ACI loans [Member] \| Commercial loans and leases [Member]
Financing Receivable Investment Past Due [Line Items]
Current	10,884	17,678
30-59 Days Past Due	0	62
60-89 Days Past Due	147	223
90 Days or More Past Due or in Foreclosure	5,000	6,044
Total Loans	$ 16,031	$ 24,007

FDIC Indemnification Asset (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
FDIC Indemnification Asset [Abstract]
Expenses subject to reimbursement included in non-interest expense	$ 4.8	$ 6.0	$ 14.9	$ 23.5
Percent FDIC will reimburse for losses (in Percent)	80.00%		80.00%
Claims submitted to the FDIC for reimbursement	$ 3.6	$ 5.9	$ 13.4	$ 24.6
Disbursements remain to be submitted for reimbursement from the FDIC in future periods	$ 19.2		$ 19.2

FDIC Indemnification Asset (Gains and Losses Associated with Covered Assets) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Covered Assets Gains Losses Line Items and Related Loss Sharing Agreement Changes [Line Items]
Gain (loss) on sale of OREO	$ 1,410	$ (2,865)	$ 1,499	$ (27,339)
Impairment of OREO	(1,385)	(4,037)	(7,980)	(21,823)
Total Net Gain (Loss) on Indemnification Asset	16,521	4,179	31,984	(39,289)
Total Net Impact on Pretax Earnings	(14,199)	(777)	(26,602)	36,857
Total Transaction Income (Loss)	2,322	3,402	5,382	(2,432)
NonOREO [Member] \| NonOREO Provision for Losses on Covered Loans [Member]
Covered Assets Gains Losses Line Items and Related Loss Sharing Agreement Changes [Line Items]
(Provision for) recovery of losses on covered loans	(1,021)	6,379	(1,137)	2,805
NonOREO [Member] \| NonOREO Provision for Losses on Covered Loans [Member] \| Net Gain Loss on Indemnification Asset [Member]
Covered Assets Gains Losses Line Items and Related Loss Sharing Agreement Changes [Line Items]
(Provision for) recovery of losses on covered loans	947	(3,762)	1,620	(2,930)
NonOREO [Member] \| NonOREO Provision for Losses on Covered Loans [Member] \| Net Impact on Pretax Earnings [Member]
Covered Assets Gains Losses Line Items and Related Loss Sharing Agreement Changes [Line Items]
(Provision for) recovery of losses on covered loans	(74)	2,617	483	(125)
NonOREO [Member] \| NonOREO Income Loss From Resolution of Covered Assets [Member]
Covered Assets Gains Losses Line Items and Related Loss Sharing Agreement Changes [Line Items]
Income from resolution of covered assets, net	17,517	4,702	39,602	7,068
NonOREO [Member] \| NonOREO Income Loss From Resolution of Covered Assets [Member] \| Net Gain Loss on Indemnification Asset [Member]
Covered Assets Gains Losses Line Items and Related Loss Sharing Agreement Changes [Line Items]
Income from resolution of covered assets, net	(15,136)	(2,668)	(33,510)	1,486
NonOREO [Member] \| NonOREO Income Loss From Resolution of Covered Assets [Member] \| Net Impact on Pretax Earnings [Member]
Covered Assets Gains Losses Line Items and Related Loss Sharing Agreement Changes [Line Items]
Income from resolution of covered assets, net	2,381	2,034	6,092	8,554
OREO [Member]
Covered Assets Gains Losses Line Items and Related Loss Sharing Agreement Changes [Line Items]
Net OREO loss	25	(6,902)	(6,481)	(49,162)
OREO [Member] \| Net Gain Loss on Indemnification Asset [Member]
Covered Assets Gains Losses Line Items and Related Loss Sharing Agreement Changes [Line Items]
Net OREO loss	(10)	5,653	5,288	38,301
OREO [Member] \| Net Impact on Pretax Earnings [Member]
Covered Assets Gains Losses Line Items and Related Loss Sharing Agreement Changes [Line Items]
Net OREO loss	15	(1,249)	(1,193)	(10,861)
OREO [Member] \| OREO Loss on Sale [Member]
Covered Assets Gains Losses Line Items and Related Loss Sharing Agreement Changes [Line Items]
Gain (loss) on sale of OREO	1,410	(2,865)	1,499	(27,339)
OREO [Member] \| OREO Loss on Sale [Member] \| Net Gain Loss on Indemnification Asset [Member]
Covered Assets Gains Losses Line Items and Related Loss Sharing Agreement Changes [Line Items]
Gain (loss) on sale of OREO	(1,118)	2,425	(1,096)	20,813
OREO [Member] \| OREO Loss on Sale [Member] \| Net Impact on Pretax Earnings [Member]
Covered Assets Gains Losses Line Items and Related Loss Sharing Agreement Changes [Line Items]
Gain (loss) on sale of OREO	292	(440)	403	(6,526)
OREO [Member] \| OREO Impairment [Member]
Covered Assets Gains Losses Line Items and Related Loss Sharing Agreement Changes [Line Items]
Impairment of OREO	(1,385)	(4,037)	(7,980)	(21,823)
OREO [Member] \| OREO Impairment [Member] \| Net Gain Loss on Indemnification Asset [Member]
Covered Assets Gains Losses Line Items and Related Loss Sharing Agreement Changes [Line Items]
Impairment of OREO	1,108	3,228	6,384	17,488
OREO [Member] \| OREO Impairment [Member] \| Net Impact on Pretax Earnings [Member]
Covered Assets Gains Losses Line Items and Related Loss Sharing Agreement Changes [Line Items]
Impairment of OREO	$ (277)	$ (809)	$ (1,596)	$ (4,335)

FDIC Indemnification Asset (Changes in the FDIC Indemnification Asset) (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2012	Dec. 31, 2011
FDIC Indemnification Asset [Abstract]
Beginning balance of changes in the FDIC indemnification asset	$ 2,049,151	$ 2,667,401
Accretion	14,513	55,901
Reduction for claims filed	(408,551)	(753,963)
Net gain on indemnification asset	(26,602)	79,812
Ending balance of changes in the FDIC indemnification asset	$ 1,628,511	$ 2,049,151

Income Taxes (Narrative) (Details) $ in Millions	9 Months Ended
Income Taxes (Narrative) (Details) $ in Millions	Sep. 30, 2011 USD ($)
Income Taxes [Abstract]
Non-deductible equity based compensation expense effecting entity to statutory income tax rate change	$ 110.4
Provision related to uncertain state income tax positions	$ 8.1

Derivatives and Hedging Activities (Narrative) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2012	Dec. 31, 2011
Derivatives and Hedging Activities [Abstract]
Maximum length until maturity (in Years)	1 year
Fair value of derivative instruments	$ 68.0
Length of time expected to reclassify AOCI into income (in Months)	twelve months
Amount expected to be reclassified from AOCI into income	$ 15.4
Investment securities available for sale pledged as collateral for interest rate swaps	76.7
Cash on deposit pledged as collateral for interest rate swaps	$ 11.5
Period of time the company is committed to lend funds to a potential borrower at a specified interest rate (Range)	30 to 90 days
Mortgage Loan Commitment Derivative [Member]
Derivatives [Line Items]
Notional amount of outstanding commitment derivatives	$ 9.6	$ 8.4
Forward Loan Sale Commitment Derivative [Member]
Derivatives [Line Items]
Notional amount of outstanding commitment derivatives	$ 1.8	$ 4.0

Derivatives and Hedging Activities (Interest Rate Contract Derivative Financial Instruments and Related Hedged Items) (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2012	Dec. 31, 2011
Derivatives [Line Items]
Notional amount of interest rate swap derivatives	$ 804,962	$ 736,036
Other Liabilities [Member]
Derivatives [Line Items]
Fair value of interest rate swap derivatives	(73,143)	(67,178)
Other Assets [Member]
Derivatives [Line Items]
Fair value of interest rate swap derivatives	$ 5,101	$ 3,731
Designated as Hedging Instrument [Member] \| Pay [Member] \| Other Liabilities [Member]
Derivatives [Line Items]
Variable rate bases of interest rate swap derivatives (NA-string)	12-Month Libor	12-Month Libor
Fair value of interest rate swap derivatives	$ (19,479)	$ (15,854)
Notional amount of interest rate swap derivatives	$ 225,000	$ 225,000
Weighted average fixed rates of interest rate swap derivatives (in Percent)	3.11%	3.11%
Weighted average remaining maturity of interest rate swap derivatives (Duration)	3 years 1 month 6 days	3 years 10 months 24 days
Designated as Hedging Instrument [Member] \| Purchased Forward Starting [Member] \| Other Liabilities [Member]
Derivatives [Line Items]
Variable rate bases of interest rate swap derivatives (NA-string)	3-Month Libor	3-Month Libor
Fair value of interest rate swap derivatives	$ (48,563)	$ (47,593)
Notional amount of interest rate swap derivatives	$ 405,000	$ 405,000
Weighted average fixed rates of interest rate swap derivatives (in Percent)	3.65%	3.65%
Weighted average remaining maturity of interest rate swap derivatives (Duration)	3 years 7 months 6 days	4 years 4 months 24 days
Nondesignated [Member] \| Pay [Member] \| Other Liabilities [Member]
Derivatives [Line Items]
Variable rate bases of interest rate swap derivatives (NA-string)	Indexed to 1-Month Libor	Indexed to 1-Month Libor
Fair value of interest rate swap derivatives	$ (5,101)	$ (3,731)
Notional amount of interest rate swap derivatives	$ 87,481	$ 53,018
Weighted average fixed rates of interest rate swap derivatives (in Percent)	4.26%	5.15%
Weighted average remaining maturity of interest rate swap derivatives (Duration)	5 years	5 years 7 months 6 days
Nondesignated [Member] \| Pay [Member] \| Other Assets [Member]
Derivatives [Line Items]
Variable rate bases of interest rate swap derivatives (NA-string)	Indexed to 1-Month Libor	Indexed to 1-Month Libor
Fair value of interest rate swap derivatives	$ 5,101	$ 3,731
Notional amount of interest rate swap derivatives	$ 87,481	$ 53,018
Weighted average fixed rates of interest rate swap derivatives (in Percent)	4.26%	5.15%
Weighted average remaining maturity of interest rate swap derivatives (Duration)	5 years	5 years 7 months 6 days

Derivatives and Hedging Activities (Gains and Losses Recognized Included in Interest Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Derivatives and Hedging Activities [Abstract]
Amount of loss included in AOCI at end of period, net of tax	$ (37,737)	$ (38,848)	$ (37,737)	$ (38,848)
Amount of loss reclassified from AOCI into income during the period (effective portion)	(4,536)	(4,844)	(13,420)	(14,312)
Amount of gain recognized in income during the period (ineffective portion)	$ 0	$ 0	$ 0	$ 427

- Definition

The amount of gain recognized in income during the period on derivative instruments designated and qualifying as hedging instruments in fair value hedges and related hedged items designated and qualifying in fair value hedges, on derivative instruments designated and qualifying as hedging instruments in cash flow hedges, and on derivative instruments not designated as hedging instruments.

+ References + Details

Stockholders' Equity (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Feb. 29, 2012
Sales of Common Stock by Selling Party [Line Items]
Total number of Initial public offering shares authorized (in Shares)	33,350,000
Series A nonvoting convertible preferred stock shares authorized (in Shares)	100,000,000		5,416,000
Series A nonvoting convertible preferred stock par value (in Dollars per share)	$ 0.01
Liquidation preference (in Dollars per share)	$ 0.01
Closing date of the initial public offering of shares (Date)	Feb. 02, 2011
Share price of IPO (in Dollars per share)	$ 27.00
Proceeds received by the company on the sale of initial public offering	$ 102,600
Direct costs of stock issuance charged to paid-in capital		$ 3,979
Stock split date (Date)	Jan. 10, 2011
Authorized stock split of the company's outstanding common shares (Ratio)	10
BankUnited [Member]
Sales of Common Stock by Selling Party [Line Items]
Total number of Initial public offering shares authorized (in Shares)	4,000,000
Stockholder Sellers [Member]
Sales of Common Stock by Selling Party [Line Items]
Total number of Initial public offering shares authorized (in Shares)	29,350,000

Stockholders' Equity (Changes in Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Stockholders' Equity [Abstract]
Net unrealized holding gains (losses) arising during the period before tax on securities available for sale before tax	$ 43,774	$ (7,125)	$ 100,523	$ 5,991
Net unrealized holding gains (losses) arising during the period on securities available for sale tax effect	(16,886)	2,756	(38,777)	(2,303)
Net unrealized holding gains (losses) arising during the period net of tax	26,888	(4,369)	61,746	3,688
Reclassification adjustment for net securities gains realized in income on securities available for sale before tax	(6,035)	(1,112)	(6,931)	(1,215)
Reclassification adjustment for net securities gains realized in income on securities available for sale tax effect	2,328	428	2,674	468
Reclassification adjustment for net securities gains realized in income on securities available for sale net of tax	(3,707)	(684)	(4,257)	(747)
Net change in unrealized gains on securities available for sale before tax	37,739	(8,237)	93,592	4,776
Net change in unrealized gains on securities available for sale tax effect	(14,558)	3,184	(36,103)	(1,835)
Net change in unrealized gains on securities available for sale net of tax	23,181	(5,053)	57,489	2,941
Net unrealized holding loss arising during the period on derivative instruments before tax	(5,910)	(24,632)	(14,372)	(38,597)
Net unrealized holding loss arising during the period on derivative instruments tax effect	2,280	9,501	5,544	14,889
Net unrealized holding loss arising during the period on derivative instruments net of tax	(3,630)	(15,131)	(8,828)	(23,708)
Reclassification adjustment for net losses realized in income on derivative instruments before tax	4,536	4,843	13,420	14,312
Reclassification adjustment for net losses realized in income on derivative instruments tax effect	(1,750)	(1,868)	(5,177)	(5,521)
Reclassification adjustment for net losses realized in income on derivative instruments net of tax	2,786	2,975	8,243	8,791
Net change in unrealized losses on derivative instruments before tax	(1,374)	(19,789)	(952)	(24,285)
Net change in unrealized losses on derivative instruments tax effect	530	7,633	367	9,368
Net change in unrealized losses on derivative instruments net of tax	(844)	(12,156)	(585)	(14,917)
Total other comprehensive income (loss) before tax	36,365	(28,026)	92,640	(19,509)
Total other comprehensive income (loss) tax effect	(14,028)	10,817	(35,736)	7,533
Total other comprehensive income (loss) net of tax	$ 22,337	$ (17,209)	$ 56,904	$ (11,976)

Equity Based Compensation (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	3 Months Ended			9 Months Ended
	Aug. 31, 2012	Sep. 30, 2012	Mar. 31, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Share Based Compensation Arrangment by Share Based Payment Award [Line Items]
Unvested stock granted under BankUnited 2010 Omnibus Equity Incentive Plan, vesting period (Duration)					3 years
Additional paid in capital, increase related to PIU share based compensation		$ 3.8		$ 9.5	$ 20.8	$ 135.7
Unvested Shares Member Pricing Group 1 [Member]
Share Based Compensation Arrangment by Share Based Payment Award [Line Items]
Unvested stock granted under BankUnited 2010 Omnibus Equity Incentive Plan					61,640
Unvested stock granted under BankUnited 2010 Omnibus Equity Incentive Plan, grant date fair value, weighted average (in Dollars per Share)		$ 24.57			$ 24.57
Unvested stock granted under BankUnited 2010 Omnibus Equity Incentive Plan, aggregate fair value					$ 1.4
Unvested Shares Member Pricing Group 1 [Member] \| Minimum [Member]
Share Based Compensation Arrangment by Share Based Payment Award [Line Items]
Unvested stock granted under BankUnited 2010 Omnibus Equity Incentive Plan, grant date fair value, closing price of stock (in Dollars per share)		23.08			$ 23.08
Unvested Shares Member Pricing Group 1 [Member] \| Maximum [Member]
Share Based Compensation Arrangment by Share Based Payment Award [Line Items]
Unvested stock granted under BankUnited 2010 Omnibus Equity Incentive Plan, grant date fair value, closing price of stock (in Dollars per share)		$ 25.20			$ 25.20
Unvested Shares Member Pricing Group 2 [Member]
Share Based Compensation Arrangment by Share Based Payment Award [Line Items]
Unvested stock granted under BankUnited 2010 Omnibus Equity Incentive Plan						291,440
Unvested stock granted under BankUnited 2010 Omnibus Equity Incentive Plan, grant date fair value, weighted average (in Dollars per Share)				$ 27.81		$ 27.81
Unvested stock granted under BankUnited 2010 Omnibus Equity Incentive Plan, aggregate fair value						$ 7.4
Unvested Shares Member Pricing Group 2 [Member] \| Minimum [Member]
Share Based Compensation Arrangment by Share Based Payment Award [Line Items]
Unvested stock granted under BankUnited 2010 Omnibus Equity Incentive Plan, grant date fair value, closing price of stock (in Dollars per share)				21.74		$ 21.74
Unvested Shares Member Pricing Group 2 [Member] \| Maximum [Member]
Share Based Compensation Arrangment by Share Based Payment Award [Line Items]
Unvested stock granted under BankUnited 2010 Omnibus Equity Incentive Plan, grant date fair value, closing price of stock (in Dollars per share)				$ 28.05		$ 28.05
Restricted Stock [Member]
Share Based Compensation Arrangment by Share Based Payment Award [Line Items]
Unvested stock granted under BankUnited 2010 Omnibus Equity Incentive Plan	297,739
Unvested stock granted under BankUnited 2010 Omnibus Equity Incentive Plan, aggregate fair value	$ 6.7
Restricted stock granted under employment agreements with certain executive officers, vesting date (Date)	Dec. 31, 2014
Performance Shares [Member]
Share Based Compensation Arrangment by Share Based Payment Award [Line Items]
Restricted stock granted under employment agreements with certain executive officers, maximum aggregate value grantable for performance shares					$ 2.0
Profits Interest Units [Member]
Share Based Compensation Arrangment by Share Based Payment Award [Line Items]
Additional paid in capital, increase related to PIU share based compensation			$ 110.4

Fair Value Measurements (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Fair Value Inputs Assets Quantitative Information [Line Items]
Fair value of preferred stocks transferred from Level 2 to Level 1	$ 200,100		$ 200,100
Non-mortgage asset-backed securities [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Asset transfers into level 3	0	$ 64,533	$ 0	$ 64,533
Fair Value Inputs Level 3 [Member] \| Fixed Income Securities [Member] \| Senior Floating Rate Bond Securities Issued In 2003 Rated AAA [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Coupon rate (in Percent)			0.43%
Current subordination level (in Percent)			26.10%
Aggregate fair value of assets	21,700		$ 21,700
Fair Value Inputs Level 3 [Member] \| Fixed Income Securities [Member] \| Senior Fixed Rate Bond Securities Issued In 2011 Rated AAA [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Coupon rate (in Percent)			5.00%
Current subordination level (in Percent)			28.50%
Aggregate fair value of assets	49,700		$ 49,700
Fair Value Inputs Level 3 [Member] \| Mortgage Backed Securities Issued By Private Enterprises [Member] \| Non-Covered [Member] \| Bond Securities Issued From 2010 To 2012 Rated AAA [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Aggregate fair value of assets	199,100		$ 199,100
Fair Value Inputs Level 3 [Member] \| Mortgage Backed Securities Issued By Private Enterprises [Member] \| Non-Covered [Member] \| Bond Securities Issued From 2010 To 2012 Rated AAA [Member] \| Minimum [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Coupon rate (in Percent)			2.90%
Current subordination level (in Percent)			7.30%
Fair Value Inputs Level 3 [Member] \| Mortgage Backed Securities Issued By Private Enterprises [Member] \| Non-Covered [Member] \| Bond Securities Issued From 2010 To 2012 Rated AAA [Member] \| Maximum [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Coupon rate (in Percent)			4.10%
Current subordination level (in Percent)			22.80%
Fair Value Inputs Level 3 [Member] \| Mortgage Backed Securities Issued By Private Enterprises [Member] \| Non-Covered [Member] \| Senior Tranch Securities Issued From 2003 To 2005 Rated Aaa To A2 [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Aggregate fair value of assets	44,200		$ 44,200
Fair Value Inputs Level 3 [Member] \| Mortgage Backed Securities Issued By Private Enterprises [Member] \| Non-Covered [Member] \| Senior Tranch Securities Issued From 2003 To 2005 Rated Aaa To A2 [Member] \| Minimum [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Coupon rate (in Percent)			5.20%
Current subordination level (in Percent)			60.90%
Fair Value Inputs Level 3 [Member] \| Mortgage Backed Securities Issued By Private Enterprises [Member] \| Non-Covered [Member] \| Senior Tranch Securities Issued From 2003 To 2005 Rated Aaa To A2 [Member] \| Maximum [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Coupon rate (in Percent)			5.70%
Current subordination level (in Percent)			71.00%
Fair Value Inputs Level 3 [Member] \| Mortgage Backed Securities Issued By Private Enterprises [Member] \| Non-Covered [Member] \| Senior And Senior Subordinate Tranch Securities Issued In 2010 Rated Aaa To A1 [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Aggregate fair value of assets	38,200		$ 38,200
Fair Value Inputs Level 3 [Member] \| Mortgage Backed Securities Issued By Private Enterprises [Member] \| Non-Covered [Member] \| Senior And Senior Subordinate Tranch Securities Issued In 2010 Rated Aaa To A1 [Member] \| Minimum [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Coupon rate (in Percent)			2.70%
Current subordination level (in Percent)			7.10%
Fair Value Inputs Level 3 [Member] \| Mortgage Backed Securities Issued By Private Enterprises [Member] \| Non-Covered [Member] \| Senior And Senior Subordinate Tranch Securities Issued In 2010 Rated Aaa To A1 [Member] \| Maximum [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Coupon rate (in Percent)			5.50%
Current subordination level (in Percent)			12.90%
Fair Value Inputs Level 3 [Member] \| Mortgage Backed Securities Issued By Private Enterprises [Member] \| Covered [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Aggregate fair value of assets	206,600		$ 206,600
Fair Value Inputs Level 3 [Member] \| Redeemable Preferred Stock [Member] \| Covered [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Aggregate fair value of assets	$ 3,700		$ 3,700

Fair Value Measurements (Changes in the Fair Value of Assets Measured at Fair Value) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Re-Remics [Member]
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Reconciliation of level 3 assets measured at fair value at beginning of period		$ 527,594		$ 612,631
Gains (losses) for the period included in net income		0		0
Gains (losses) for the period included in other comprehensive income		566		(4,195)
Purchases or issuances		0		0
Sales		0		0
Settlements		(34,478)		(114,754)
Transfers into level 3		0		0
Transfers out of level 3		0		0
Balance of assets measured at fair value at end of period		493,682		493,682
Private Residential Mortgage-Backed Securities [Member]
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Reconciliation of level 3 assets measured at fair value at beginning of period	$ 487,990	353,235	$ 387,687	382,920
Gains (losses) for the period included in net income	0	0	0	0
Gains (losses) for the period included in other comprehensive income	11,702	(5,217)	17,852	(12,989)
Purchases or issuances	22,863	75,000	167,300	84,390
Sales	0	0	0	0
Settlements	(34,489)	(16,758)	(84,773)	(48,061)
Transfers into level 3	0	0	0	0
Transfers out of level 3	0	0	0	0
Balance of assets measured at fair value at end of period	488,066	406,260	488,066	406,260
Private Label Commercial Mortgage-Backed Securities [Member]
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Reconciliation of level 3 assets measured at fair value at beginning of period		64,778		0
Gains (losses) for the period included in net income		0		0
Gains (losses) for the period included in other comprehensive income		1,498		1,468
Purchases or issuances		113,592		178,370
Sales		0		0
Settlements		(20,618)		(20,618)
Transfers into level 3		0		0
Transfers out of level 3		0		0
Balance of assets measured at fair value at end of period		159,250		159,250
Non-mortgage asset-backed securities [Member]
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Reconciliation of level 3 assets measured at fair value at beginning of period	75,194	221,352	79,870	130,610
Gains (losses) for the period included in net income	0	0	0	0
Gains (losses) for the period included in other comprehensive income	555	(722)	932	2,956
Purchases or issuances	0	45,814	0	140,922
Sales	0	0	0	0
Settlements	(4,300)	(4,990)	(9,353)	(13,034)
Transfers into level 3	0	64,533	0	64,533
Transfers out of level 3	0	0	0	0
Balance of assets measured at fair value at end of period	71,449	325,987	71,449	325,987
Other debt securities [Member]
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Reconciliation of level 3 assets measured at fair value at beginning of period	3,736	4,511	3,159	3,943
Gains (losses) for the period included in net income	0	0	0	0
Gains (losses) for the period included in other comprehensive income	13	(603)	601	(35)
Purchases or issuances	0	0	0	0
Sales	0	0	0	0
Settlements	(18)	(3)	(29)	(3)
Transfers into level 3	0	0	0	0
Transfers out of level 3	0	0	0	0
Balance of assets measured at fair value at end of period	$ 3,731	3,905	$ 3,731	3,905
FDIC Warrant [Member]
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Reconciliation of level 3 assets measured at fair value at beginning of period				(25,000)
Gains (losses) for the period included in net income				0
Gains (losses) for the period included in other comprehensive income				0
Purchases or issuances				0
Sales				0
Settlements				25,000
Transfers into level 3				0
Transfers out of level 3				0
Balance of assets measured at fair value at end of period		$ 0		$ 0

Fair Value Measurements (Changes in the Fair Value of Liabilities Measured at Fair Value) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
PIU Liability [Member]
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Reconciliation of level 3 liabilities measured at fair value at beginning of period				$ (44,964)
Gains (losses) for the period included in net income				0
Gains (losses) for the period included in other comprehensive income				0
Purchases or issuances				0
Sales				0
Settlements				44,964
Transfers into level 3				0
Transfers out of level 3				0
Balance of liabilities measured at fair value at end of period		$ 0		0
Derivatives [Member]
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Reconciliation of level 3 liabilities measured at fair value at beginning of period	$ (4)	(29)	$ 0	(78)
Gains (losses) for the period included in net income	48	(19)	44	30
Gains (losses) for the period included in other comprehensive income	0	0	0	0
Purchases or issuances	0	0	0	0
Sales	0	0	0	0
Settlements	0	0	0	0
Transfers into level 3	0	0	0	0
Transfers out of level 3	0	0	0	0
Balance of liabilities measured at fair value at end of period	$ 44	$ (48)	$ 44	$ (48)

Fair Value Measurements (Valuation Techniques and Unobservable Inputs Used in the Valuation of Financial Instruments Falling within Level 3 of the Fair Value Hierarchy) (Details) - Income Approach Valuation Technique [Member] $ in Thousands	9 Months Ended
	Sep. 30, 2012 USD ($)
Private label residential mortgage-backed securities and CMO's [Member] \| Non-Covered [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Total fair value of assets	$ 281,452
Private label residential mortgage-backed securities and CMO's [Member] \| Non-Covered [Member] \| Minimum [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Voluntary prepayment rate (in Percent)	6.22%
Probability rate of default (in Percent)	0.00%
Loss severity rate (in Percent)	0.00%
Private label residential mortgage-backed securities and CMO's [Member] \| Non-Covered [Member] \| Maximum [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Voluntary prepayment rate (in Percent)	62.62%
Probability rate of default (in Percent)	7.45%
Loss severity rate (in Percent)	49.85%
Private label residential mortgage-backed securities and CMO's [Member] \| Non-Covered [Member] \| Weighted Average [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Voluntary prepayment rate (in Percent)	23.95%
Probability rate of default (in Percent)	1.19%
Loss severity rate (in Percent)	19.13%
Private label residential mortgage-backed securities and CMO's [Member] \| Covered [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Total fair value of assets	$ 206,614
Private label residential mortgage-backed securities and CMO's [Member] \| Covered [Member] \| Minimum [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Voluntary prepayment rate (in Percent)	1.00%
Probability rate of default (in Percent)	0.00%
Loss severity rate (in Percent)	0.00%
Private label residential mortgage-backed securities and CMO's [Member] \| Covered [Member] \| Maximum [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Voluntary prepayment rate (in Percent)	30.40%
Probability rate of default (in Percent)	30.74%
Loss severity rate (in Percent)	74.85%
Private label residential mortgage-backed securities and CMO's [Member] \| Covered [Member] \| Weighted Average [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Voluntary prepayment rate (in Percent)	8.66%
Probability rate of default (in Percent)	8.13%
Loss severity rate (in Percent)	7.79%
Non-mortgage asset-backed securities [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Total fair value of assets	$ 71,449
Non-mortgage asset-backed securities [Member] \| Minimum [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Voluntary prepayment rate (in Percent)	5.00%
Probability rate of default (in Percent)	4.00%
Loss severity rate (in Percent)	55.00%
Non-mortgage asset-backed securities [Member] \| Maximum [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Voluntary prepayment rate (in Percent)	10.00%
Probability rate of default (in Percent)	5.00%
Loss severity rate (in Percent)	55.00%
Non-mortgage asset-backed securities [Member] \| Weighted Average [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Voluntary prepayment rate (in Percent)	8.63%
Probability rate of default (in Percent)	4.73%
Loss severity rate (in Percent)	55.00%

Fair Value Measurements (Assets for which Nonrecurring Changes in Fair Value have been Recorded) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
OREO [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Nonrecurring assets in fair value	$ 89,221	$ 124,990	$ 89,221	$ 124,990
Changes in fair value of assets	(1,385)	(4,037)	(7,980)	(21,823)
OREO [Member] \| Fair Value Inputs Level 1 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Nonrecurring assets in fair value	0	0	0	0
OREO [Member] \| Fair Value Inputs Level 2 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Nonrecurring assets in fair value	0	0	0	0
OREO [Member] \| Fair Value Inputs Level 3 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Nonrecurring assets in fair value	89,221	124,990	89,221	124,990
Impaired Loans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Nonrecurring assets in fair value	5,123	2,841	5,123	2,841
Changes in fair value of assets	(1,301)	(1,352)	(1,301)	(6,506)
Impaired Loans [Member] \| Fair Value Inputs Level 1 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Nonrecurring assets in fair value	0	0	0	0
Impaired Loans [Member] \| Fair Value Inputs Level 2 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Nonrecurring assets in fair value	0	0	0	0
Impaired Loans [Member] \| Fair Value Inputs Level 3 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Nonrecurring assets in fair value	$ 5,123	$ 2,841	$ 5,123	$ 2,841

Fair Value Measurements (Carrying Value and Fair Value of Financial Instruments) (Details) - USD ($) $ in Thousands	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2011	Dec. 31, 2010
Assets:
Cash and cash equivalents at carrying value	$ 346,643	$ 303,742	$ 385,086	$ 564,774
Cash and cash equivalents at fair value	346,643	303,742
Investment securities available for sale at carrying value	4,783,646	4,181,977
Investment securities available for sale at fair value	4,783,646	4,181,977
Non-marketable equity securities at carrying value	145,723	147,055
Non-marketable equity securities at fair value	145,723	147,055
Loans held for sale at carrying value	6,412	3,952
Loans held for sale at fair value	6,441	3,994
Covered loans at carrying value	2,022,848	2,398,737
Covered loans at fair value	2,623,766	2,856,268
Non-covered loans at carrying value	3,218,217	1,689,919
Non-covered loans at fair value	3,238,842	1,725,313
FDIC indemnification asset at carrying value	1,628,511	2,049,151		$ 2,667,401
FDIC indemnification asset at fair value	1,488,928	1,950,446
Accrued interest receivable at carrying value	22,060	19,133
Accrued interest receivable at fair value	22,060	19,133
Derivative assets at carrying value	5,145	3,731
Derivative assets at fair value	5,145	3,731
Liabilities:
Demand, savings and money market deposits at carrying value	5,732,481	4,777,530
Demand, savings and money market deposits at fair value	5,732,481	4,777,530
Time deposits at carrying value	2,725,382	2,587,184
Time deposits at fair value	2,753,747	2,621,874
Short-term borrowings at carrying value	621	206
Short-term borrowings at fair value	621	206
Federal Home Loan Bank advances and other borrowings at carrying value	2,218,695	2,236,131
Federal Home Loan Bank advances and other borrowings at fair value	2,254,007	2,294,265
Income taxes payable at carrying value	5,116	53,171
Income taxes payable at fair value	5,116	53,171
Accrued interest payable at carrying value	6,559	8,519
Accrued interest payable at fair value	6,559	8,519
Advance payments by borrowers for taxes and insurance at carrying value	44,645	21,838
Advance payments by borrowers for taxes and insurance at fair value	44,645	21,838
Derivative liabilities at carrying value	73,143	67,178
Derivative liabilities at fair value	$ 73,143	$ 67,178

Commitments and Contingencies (Narrative) (Details)	9 Months Ended
Commitments and Contingencies (Narrative) (Details)	Sep. 30, 2012
Commitments and Contingencies [Abstract]
Standby letter of credit amortization term (Duration)	1 year

Commitments and Contingencies (Total Lending Related Commitments Outstanding) (Details) $ in Thousands	Sep. 30, 2012 USD ($)
Purchase Commitment Excluding Long Term Commitment [Line Items]
Commitments to fund loans	$ 268,507
Commitments to purchase loans	24,525
Unfunded commitments under lines of credit	488,035
Commercial and standby letters of credit	35,346
Total lending related commitments	816,413
Covered [Member]
Purchase Commitment Excluding Long Term Commitment [Line Items]
Commitments to fund loans	0
Commitments to purchase loans	0
Unfunded commitments under lines of credit	70,757
Commercial and standby letters of credit	0
Total lending related commitments	70,757
Non-Covered [Member]
Purchase Commitment Excluding Long Term Commitment [Line Items]
Commitments to fund loans	268,507
Commitments to purchase loans	24,525
Unfunded commitments under lines of credit	417,278
Commercial and standby letters of credit	35,346
Total lending related commitments	$ 745,656

Loans and Allowance for Loan and Lease Losses (Commercial Credit Exposure on Non-ACI and New Loans Based on Internal Risk Rating) (Details) - USD ($) $ in Thousands	Sep. 30, 2012	Dec. 31, 2011
Financing Receivable Recorded Investment [Line Items]
Loans	$ 5,301,481	$ 4,137,058
Non-ACI loans [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	252,459	324,470
Non-ACI loans [Member] \| Multi-family [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	727	774
Non-ACI loans [Member] \| Commercial real estate [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	2,477	32,678
Non-ACI loans [Member] \| Construction [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	0	0
Non-ACI loans [Member] \| Land [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	157	164
Non-ACI loans [Member] \| Commercial loans and leases [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	13,842	19,184
Non-ACI loans [Member] \| Commercial [Member] \| Multi-family [Member] \| Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	716	757
Non-ACI loans [Member] \| Commercial [Member] \| Multi-family [Member] \| Special mention [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	0	0
Non-ACI loans [Member] \| Commercial [Member] \| Multi-family [Member] \| Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	11	17
Non-ACI loans [Member] \| Commercial [Member] \| Multi-family [Member] \| Doubtful [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	0	0
Non-ACI loans [Member] \| Commercial [Member] \| Commercial real estate [Member] \| Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	2,372	32,096
Non-ACI loans [Member] \| Commercial [Member] \| Commercial real estate [Member] \| Special mention [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	0	287
Non-ACI loans [Member] \| Commercial [Member] \| Commercial real estate [Member] \| Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	105	295
Non-ACI loans [Member] \| Commercial [Member] \| Commercial real estate [Member] \| Doubtful [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	0	0
Non-ACI loans [Member] \| Commercial [Member] \| Construction [Member] \| Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	0	0
Non-ACI loans [Member] \| Commercial [Member] \| Construction [Member] \| Special mention [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	0	0
Non-ACI loans [Member] \| Commercial [Member] \| Construction [Member] \| Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	0	0
Non-ACI loans [Member] \| Commercial [Member] \| Construction [Member] \| Doubtful [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	0	0
Non-ACI loans [Member] \| Commercial [Member] \| Land [Member] \| Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	0	0
Non-ACI loans [Member] \| Commercial [Member] \| Land [Member] \| Special mention [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	0	0
Non-ACI loans [Member] \| Commercial [Member] \| Land [Member] \| Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	157	164
Non-ACI loans [Member] \| Commercial [Member] \| Land [Member] \| Doubtful [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	0	0
Non-ACI loans [Member] \| Commercial [Member] \| Commercial loans and leases [Member] \| Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	7,926	10,550
Non-ACI loans [Member] \| Commercial [Member] \| Commercial loans and leases [Member] \| Special mention [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	277	1,752
Non-ACI loans [Member] \| Commercial [Member] \| Commercial loans and leases [Member] \| Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	4,904	6,662
Non-ACI loans [Member] \| Commercial [Member] \| Commercial loans and leases [Member] \| Doubtful [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	735	220
New Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	3,253,723	1,710,027
New Loans [Member] \| Multi-family [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	302,937	107,923
New Loans [Member] \| Commercial real estate [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	645,521	310,008
New Loans [Member] \| Construction [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	43,754	23,089
New Loans [Member] \| Land [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	27,107	7,447
New Loans [Member] \| Commercial loans and leases [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	1,393,574	789,533
New Loans [Member] \| Commercial [Member] \| Multi-family [Member] \| Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	295,731	106,010
New Loans [Member] \| Commercial [Member] \| Multi-family [Member] \| Special mention [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	3,122	1,000
New Loans [Member] \| Commercial [Member] \| Multi-family [Member] \| Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	4,084	913
New Loans [Member] \| Commercial [Member] \| Multi-family [Member] \| Doubtful [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	0	0
New Loans [Member] \| Commercial [Member] \| Commercial real estate [Member] \| Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	639,431	302,278
New Loans [Member] \| Commercial [Member] \| Commercial real estate [Member] \| Special mention [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	0	5,300
New Loans [Member] \| Commercial [Member] \| Commercial real estate [Member] \| Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	6,090	2,430
New Loans [Member] \| Commercial [Member] \| Commercial real estate [Member] \| Doubtful [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	0	0
New Loans [Member] \| Commercial [Member] \| Construction [Member] \| Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	43,754	23,086
New Loans [Member] \| Commercial [Member] \| Construction [Member] \| Special mention [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	0	0
New Loans [Member] \| Commercial [Member] \| Construction [Member] \| Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	0	3
New Loans [Member] \| Commercial [Member] \| Construction [Member] \| Doubtful [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	0	0
New Loans [Member] \| Commercial [Member] \| Land [Member] \| Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	26,821	7,115
New Loans [Member] \| Commercial [Member] \| Land [Member] \| Special mention [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	0	0
New Loans [Member] \| Commercial [Member] \| Land [Member] \| Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	286	332
New Loans [Member] \| Commercial [Member] \| Land [Member] \| Doubtful [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	0	0
New Loans [Member] \| Commercial [Member] \| Commercial loans and leases [Member] \| Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	1,341,764	778,069
New Loans [Member] \| Commercial [Member] \| Commercial loans and leases [Member] \| Special mention [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	24,691	1,440
New Loans [Member] \| Commercial [Member] \| Commercial loans and leases [Member] \| Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	25,519	9,106
New Loans [Member] \| Commercial [Member] \| Commercial loans and leases [Member] \| Doubtful [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	1,600	918
New and Non-ACI loans [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	3,506,182	2,034,497
New and Non-ACI loans [Member] \| Multi-family [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	303,664	108,697
New and Non-ACI loans [Member] \| Commercial real estate [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	647,998	342,686
New and Non-ACI loans [Member] \| Construction [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	43,754	23,089
New and Non-ACI loans [Member] \| Land [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	27,264	7,611
New and Non-ACI loans [Member] \| Commercial loans and leases [Member]
Financing Receivable Recorded Investment [Line Items]
Loans	$ 1,407,416	$ 808,717

Fair Value Measurements (Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details) - USD ($) $ in Thousands	Sep. 30, 2012	Dec. 31, 2011
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	$ 4,783,646	$ 4,181,977
Assets [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	4,788,791	4,185,708
Assets [Member] \| Fair Value Inputs Level 1 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	169,085	253,778
Assets [Member] \| Fair Value Inputs Level 2 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	4,056,416	3,461,214
Assets [Member] \| Fair Value Inputs Level 3 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	563,290	470,716
Assets [Member] \| US Treasury and government agency securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	42,686
Assets [Member] \| US Treasury and government agency securities [Member] \| Fair Value Inputs Level 1 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	20,159
Assets [Member] \| US Treasury and government agency securities [Member] \| Fair Value Inputs Level 2 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	22,527
Assets [Member] \| US Treasury and government agency securities [Member] \| Fair Value Inputs Level 3 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	0
Assets [Member] \| US Government agency and sponsored enterprise residential mortgage-backed securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	2,058,901	1,985,713
Assets [Member] \| US Government agency and sponsored enterprise residential mortgage-backed securities [Member] \| Fair Value Inputs Level 1 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	0	0
Assets [Member] \| US Government agency and sponsored enterprise residential mortgage-backed securities [Member] \| Fair Value Inputs Level 2 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	2,058,901	1,985,713
Assets [Member] \| US Government agency and sponsored enterprise residential mortgage-backed securities [Member] \| Fair Value Inputs Level 3 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	0	0
Assets [Member] \| US Government agency and sponsored enterprise commercial mortgage-backed securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	137,254
Assets [Member] \| US Government agency and sponsored enterprise commercial mortgage-backed securities [Member] \| Fair Value Inputs Level 1 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	0
Assets [Member] \| US Government agency and sponsored enterprise commercial mortgage-backed securities [Member] \| Fair Value Inputs Level 2 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	137,254
Assets [Member] \| US Government agency and sponsored enterprise commercial mortgage-backed securities [Member] \| Fair Value Inputs Level 3 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	0
Assets [Member] \| Re-Remics [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	630,080	546,310
Assets [Member] \| Re-Remics [Member] \| Fair Value Inputs Level 1 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	0	0
Assets [Member] \| Re-Remics [Member] \| Fair Value Inputs Level 2 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	630,080	546,310
Assets [Member] \| Re-Remics [Member] \| Fair Value Inputs Level 3 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	0	0
Assets [Member] \| Private label residential mortgage-backed securities and CMO's [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	488,066	387,687
Assets [Member] \| Private label residential mortgage-backed securities and CMO's [Member] \| Fair Value Inputs Level 1 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	0	0
Assets [Member] \| Private label residential mortgage-backed securities and CMO's [Member] \| Fair Value Inputs Level 2 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	0	0
Assets [Member] \| Private label residential mortgage-backed securities and CMO's [Member] \| Fair Value Inputs Level 3 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	488,066	387,687
Assets [Member] \| Private label commercial mortgage-backed securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	484,858	262,562
Assets [Member] \| Private label commercial mortgage-backed securities [Member] \| Fair Value Inputs Level 1 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	0	0
Assets [Member] \| Private label commercial mortgage-backed securities [Member] \| Fair Value Inputs Level 2 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	484,858	262,562
Assets [Member] \| Private label commercial mortgage-backed securities [Member] \| Fair Value Inputs Level 3 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	0	0
Assets [Member] \| Collateralized loan obligations [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	110,246
Assets [Member] \| Collateralized loan obligations [Member] \| Fair Value Inputs Level 1 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	0
Assets [Member] \| Collateralized loan obligations [Member] \| Fair Value Inputs Level 2 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	110,246
Assets [Member] \| Collateralized loan obligations [Member] \| Fair Value Inputs Level 3 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	0
Assets [Member] \| Non-mortgage asset-backed securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	297,606	410,885
Assets [Member] \| Non-mortgage asset-backed securities [Member] \| Fair Value Inputs Level 1 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	0	0
Assets [Member] \| Non-mortgage asset-backed securities [Member] \| Fair Value Inputs Level 2 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	226,157	331,015
Assets [Member] \| Non-mortgage asset-backed securities [Member] \| Fair Value Inputs Level 3 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	71,449	79,870
Assets [Member] \| Mutual funds and preferred stocks [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	149,057	253,817
Assets [Member] \| Mutual funds and preferred stocks [Member] \| Fair Value Inputs Level 1 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	148,926	253,778
Assets [Member] \| Mutual funds and preferred stocks [Member] \| Fair Value Inputs Level 2 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	131	39
Assets [Member] \| Mutual funds and preferred stocks [Member] \| Fair Value Inputs Level 3 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	0	0
Assets [Member] \| State and municipal obligations [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	23,866	25,270
Assets [Member] \| State and municipal obligations [Member] \| Fair Value Inputs Level 1 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	0	0
Assets [Member] \| State and municipal obligations [Member] \| Fair Value Inputs Level 2 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	23,886	25,270
Assets [Member] \| State and municipal obligations [Member] \| Fair Value Inputs Level 3 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	0	0
Assets [Member] \| Small Business Administration securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	344,915	303,677
Assets [Member] \| Small Business Administration securities [Member] \| Fair Value Inputs Level 1 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	0	0
Assets [Member] \| Small Business Administration securities [Member] \| Fair Value Inputs Level 2 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	344,915	303,677
Assets [Member] \| Small Business Administration securities [Member] \| Fair Value Inputs Level 3 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	0	0
Assets [Member] \| Other debt securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	16,091	6,056
Assets [Member] \| Other debt securities [Member] \| Fair Value Inputs Level 1 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	0	0
Assets [Member] \| Other debt securities [Member] \| Fair Value Inputs Level 2 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	12,360	2,897
Assets [Member] \| Other debt securities [Member] \| Fair Value Inputs Level 3 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	3,731	3,159
Assets [Member] \| Derivative assets [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	5,145	3,731
Assets [Member] \| Derivative assets [Member] \| Fair Value Inputs Level 1 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	0	0
Assets [Member] \| Derivative assets [Member] \| Fair Value Inputs Level 2 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	5,101	3,731
Assets [Member] \| Derivative assets [Member] \| Fair Value Inputs Level 3 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	44	0
Liability [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	73,143	67,178
Liability [Member] \| Fair Value Inputs Level 1 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	0	0
Liability [Member] \| Fair Value Inputs Level 2 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	73,143	67,178
Liability [Member] \| Fair Value Inputs Level 3 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	0	0
Liability [Member] \| Derivative liabilities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	73,143	67,178
Liability [Member] \| Derivative liabilities [Member] \| Fair Value Inputs Level 1 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	0	0
Liability [Member] \| Derivative liabilities [Member] \| Fair Value Inputs Level 2 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	73,143	67,178
Liability [Member] \| Derivative liabilities [Member] \| Fair Value Inputs Level 3 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale securities	$ 0	$ 0