East West Bancorp (EWBC) 10-Q 8 May 15 2015 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Mar. 31, 2015	Apr. 30, 2015
Document and Entity Information
Entity Registrant Name	EAST WEST BANCORP INC
Entity Central Index Key	1069157
Document Type	10-Q
Document Period End Date	31-Mar-15
Amendment Flag	FALSE
Current Fiscal Year End Date	-19
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		143,846,255
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1

CONSOLIDATED_BALANCE_SHEETS

CONSOLIDATED BALANCE SHEETS (USD $)	Mar. 31, 2015		Dec. 31, 2014
In Thousands, unless otherwise specified
ASSETS
Cash and cash equivalents	$1,886,199		$1,039,885
Short-term investments	325,350		338,714
Securities purchased under resale agreements	1,550,000		1,225,000
Available-for-sale investment securities, at fair value	2,841,085		2,626,365
Loans held for sale	196,111		45,950
Loans (net of allowance for loan losses of $257,738 in 2015 and $261,679 in 2014)	21,116,931	[1]	21,468,270	[1]
Other real estate owned, net	32,692		32,111
Investment in Federal Home Loan Bank stock, at cost	28,603		31,239
Investment in Federal Reserve Bank stock, at cost	54,556		54,451
Investment in qualified affordable housing partnerships, net	182,719		178,962	[2]
Premises and equipment (net of accumulated depreciation of $88,826 in 2015 and $85,409 in 2014)	176,438		180,900
Goodwill	469,433		469,433
Other assets	1,046,718		1,052,312	[2]
TOTAL	29,906,835		28,743,592	[2]
Customer deposits:
Noninterest-bearing	8,120,644		7,381,030
Interest-bearing	17,042,189		16,627,744
Total deposits	25,162,833		24,008,774
Federal Home Loan Bank advances	317,777		317,241
Securities sold under repurchase agreements	695,000		795,000
Long-term debt	220,905		225,848
Accrued expenses and other liabilities	571,557		540,618
Total liabilities	26,968,072		25,887,481
COMMITMENTS AND CONTINGENCIES (Note 12)
STOCKHOLDERS' EQUITY
Common stock, $0.001 par value, 200,000,000 shares authorized; 164,151,409 and 163,772,218 issued in 2015 and 2014, respectively; 143,820,549 and 143,582,229 shares outstanding in 2015 and 2014, respectively.	164		164
Additional paid in capital	1,685,699		1,677,767
Retained earnings	1,675,234		1,604,141	[2]
Treasury stock, at cost-20,330,860 shares in 2015 and 20,189,989 shares in 2014	-435,889		-430,198
Accumulated other comprehensive income, net of tax	13,555		4,237
Total stockholders' equity	2,938,763		2,856,111	[2]
TOTAL	$29,906,835		$28,743,592	[2]
[1]	Loans net of ASC 310-30 discount.
[2]	Prior periods were restated to reflect the retrospective application of adopting the new accounting guidance related to the Company?s investments in qualified affordable housing projects Accounting Standard Update ("ASU") 2014-01. See Note 10 of the Notes to Consolidated Financial Statements for additional information.

CONSOLIDATED_BALANCE_SHEETS_Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, except Share data, unless otherwise specified
ASSETS
Allowance for loan losses	$257,738	$261,679
Premises and equipment, accumulated depreciation	$88,826	$85,409
STOCKHOLDERS' EQUITY
Common stock, par value (in dollars per share)	$0.00	$0.00
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	164,151,409	163,772,218
Common stock, shares outstanding	143,820,549	143,582,229
Treasury stock, shares	20,330,860	20,189,989

CONSOLIDATED_STATEMENTS_OF_INC

CONSOLIDATED STATEMENTS OF INCOME (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
INTEREST AND DIVIDEND INCOME
Loans receivable, including fees	$241,566	$261,571
Available-for-sale investment securities	10,184	12,276
Securities purchased under resale agreements	4,849	4,853
Investment in Federal Home Loan Bank and Federal Reserve Bank stock	1,236	1,871
Due from banks and short-term investments	5,426	5,602
Total interest and dividend income	263,261	286,173
INTEREST EXPENSE
Customer deposits	16,963	15,882
Federal Home Loan Bank advances	1,033	1,045
Securities sold under repurchase agreements	8,406	10,078
Long-term debt	1,142	1,202
Total interest expense	27,544	28,207
Net interest income before provision for loan losses	235,717	257,966
Provision for loan losses	4,987	6,933
Net interest income after provision for loan losses	230,730	251,033
NONINTEREST INCOME (LOSS)
Branch fees	9,384	9,446
Letters of credit fees and foreign exchange income	8,706	6,856
Ancillary loan fees	2,656	2,472
Wealth management fees	5,179	3,028
Derivative commission fee income	5,306	2,760
Changes in FDIC indemnification asset and receivable/payable	-8,422	-53,634
Net gains on sales of loans	9,551	6,196
Net gains on sales of available-for-sale investment securities	4,404	3,418
Other operating income	7,362	4,542
Total noninterest income (loss)	44,126	-14,916
NONINTEREST EXPENSE
Compensation and employee benefits	64,253	59,277
Occupancy and equipment expense	15,443	15,851
Amortization of tax credit and other investments	6,299	1,492	[1]
Amortization of premiums on deposits acquired	2,391	2,500
Deposit insurance premiums and regulatory assessments	5,656	5,702
Loan related expenses	2,340	2,575
Other real estate owned (income) expense	-1,026	1,334
Legal expense	6,870	3,799
Data processing	2,617	8,200
Other operating expenses	23,187	19,224
Total noninterest expense	128,030	119,954	[1]
INCOME BEFORE INCOME TAXES	146,826	116,163	[1]
INCOME TAX EXPENSE	46,799	41,992	[1]
NET INCOME	$100,027	$74,171	[1]
EARNINGS PER SHARE
BASIC (in dollars per share)	$0.70	$0.52	[1]
DILUTED (in dollars per share)	$0.69	$0.52	[1]
WEIGHTED AVERAGE NUMBER OF SHARES OUTSTANDING
BASIC (in shares)	143,655	141,962
DILUTED (in shares)	144,349	142,632
DIVIDENDS DECLARED PER COMMON SHARE (in dollars per share)	$0.20	$0.18
[1]	Prior periods were restated to reflect the retrospective application of adopting the new accounting guidance related to the Company?s investments in qualified affordable housing projects Accounting Standard Update ("ASU") 2014-01. See Note 10 of the Notes to Consolidated Financial Statements for additional information.

CONSOLIDATED_STATEMENTS_OF_COM

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net income	$100,027	$74,171	[1]
Other comprehensive income, net of tax:
Net change in unrealized gains on available-for-sale investment securities	9,325	13,439
Net change in unrealized losses on other investments	-7	-17
Other comprehensive income	9,318	13,422
COMPREHENSIVE INCOME	$109,345	$87,593	[1]
[1]	Prior periods were restated to reflect the retrospective application of adopting the new accounting guidance related to the Company?s investments in qualified affordable housing projects Accounting Standard Update ("ASU") 2014-01. See Note 10 of the Notes to Consolidated Financial Statements for additional information.

CONSOLIDATED_STATEMENTS_OF_CHA

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (USD $)		Common Stock	Additional Paid In Capital Common Stock	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Income (Loss), Net of Tax	Total
In Thousands, unless otherwise specified
BALANCE at Dec. 31, 2013	[1]	$163	$1,571,670	$1,362,278	($537,279)	($30,459)	$2,366,373
Increase (Decrease) in Stockholders' Equity
Net income	[1]			74,171			74,171
Other comprehensive income						13,422	13,422
Stock compensation costs			3,180				3,180
Tax benefit from stock compensation plans, net			3,708				3,708
Issuance of 379,191 and 356,187 shares of common stock pursuant to various stock compensation plans and agreements for the period ended March 31, 2015 and 2014, respectively			283				283
Cancellation of 7,233 shares of common stock due to forfeitures of issued restricted stock for the period ended March 31, 2014			127		-127
140,871 and 195,291 shares of restricted stock surrendered due to employee tax liability for the period ended March 31, 2015 and 2014, respectively					-7,074		-7,074
Common stock dividends				-25,950			-25,950
Issuance of 5,583,093 shares pursuant to MetroCorp acquisition			73,044		117,786		190,830
Warrant acquired pursuant to MetroCorp acquisition			4,855				4,855
BALANCE at Mar. 31, 2014	[1]	163	1,656,867	1,410,499	-426,694	-17,037	2,623,798
BALANCE at Dec. 31, 2014	[1]	164	1,677,767	1,604,141	-430,198	4,237	2,856,111
Increase (Decrease) in Stockholders' Equity
Net income				100,027			100,027
Other comprehensive income						9,318	9,318
Stock compensation costs			3,954				3,954
Tax benefit from stock compensation plans, net			3,145				3,145
Issuance of 379,191 and 356,187 shares of common stock pursuant to various stock compensation plans and agreements for the period ended March 31, 2015 and 2014, respectively			833				833
140,871 and 195,291 shares of restricted stock surrendered due to employee tax liability for the period ended March 31, 2015 and 2014, respectively					-5,691		-5,691
Common stock dividends				-28,934			-28,934
BALANCE at Mar. 31, 2015		$164	$1,685,699	$1,675,234	($435,889)	$13,555	$2,938,763
[1]	Prior periods were restated to reflect the retrospective application of adopting the new accounting guidance related to the Company?s investments in qualified affordable housing projects Accounting Standard Update ("ASU") 2014-01. See Note 10 of the Notes to Consolidated Financial Statements for additional information.

CONSOLIDATED_STATEMENTS_OF_CHA1

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY
Issuance of shares of common stock pursuant to various stock compensation plans and agreements, shares	379,191	356,187
Cancellation of common stock due to forfeitures of issued restricted stock, shares		7,233
Restricted stock surrendered due to employee tax liability, shares	140,871	195,291
Issuance of shares pursuant to MetroCorp acquisition, shares		5,583,093

CONSOLIDATED_STATEMENTS_OF_CAS

CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$100,027	$74,171	[1]
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	17,422	17,420	[1]
(Accretion) of discount and amortization of premiums, net	-18,600	-56,020
Changes in FDIC indemnification asset and receivable/payable	8,422	53,634
Stock compensation costs	3,954	3,180
Tax benefit from stock compensation plans, net	-3,145	-3,708
Provision for loan losses	4,987	6,933
Net gain on sales of available-for-sale investment securities, loans and other assets	-17,788	-10,458
Originations and purchases of loans held for sale		-60,492
Proceeds from sales and paydowns/payoffs in loans held for sale	457	40,781
Net (payments to) proceeds from FDIC shared-loss agreements	-1,810	4,139
Net change in accrued interest receivable and other assets	5,980	41,713	[1]
Net change in accrued expenses and other liabilities	26,413	-63,610
Other net operating activities	-781	203
Total adjustments	25,511	-26,285	[1]
Net cash provided by operating activities	125,538	47,886
CASH FLOWS FROM INVESTING ACTIVITIES
Acquisitions, net of cash paid		138,465
Net (increase) decrease in:
Loans	-454,194	-734,560
Short-term investments	13,364	-65,793
Securities purchased under resale agreements	-425,000	100,000
Purchases of:
Available-for-sale investment securities	-517,477	-138,149
Loans receivable	-1,609	-974
Premises and equipment	-1,741
Investments in qualified affordable housing partnerships, tax credit and other investments	-20,861	-27,510
Proceeds from sale of:
Available-for-sale investment securities	180,501	330,231
Loans receivable	679,775	134,150
Other real estate owned	4,513	4,986
Premises and equipment	4,345
Repayments, maturities and redemptions of available-for-sale investment securities	138,422	151,358
Redemption of Federal Home Loan Bank stock	2,636	12,930
Surrender of life insurance policies	156	14,769
Other net investing activities	-105	-5,512
Net cash used in investing activities	-397,275	-85,609
Net increase (decrease) in:
Deposits	1,154,059	1,096,290
Securities sold under repurchase agreements		-15,000
Proceeds from:
Issuance of common stock pursuant to various stock plans and agreements	833	283
Payment for:
Repayment of Federal Home Loan Bank advances		-10,000
Repayment of long-term debt	-5,000	-15,310
Repurchase of vested shares due to employee tax liability	-5,691	-7,074
Cash dividends	-29,295	-26,139
Tax benefit from stock compensation plans, net	3,145	3,708
Net cash provided by financing activities	1,118,051	1,026,758
NET INCREASE IN CASH AND CASH EQUIVALENTS	846,314	989,035
CASH AND CASH EQUIVALENTS, BEGINNING OF THE PERIOD	1,039,885	895,820
CASH AND CASH EQUIVALENTS, END OF THE PERIOD	1,886,199	1,884,855
Cash paid during the period for:
Interest	26,707	27,803
Income tax payments, net of refunds	18,458	70,723
Noncash investing and financing activities:
Loans transferred to loans held for sale, net	820,473	478,982
Transfers to other real estate owned	3,828	15,628
Issuance of stock related to acquisition		$190,830
[1]	Prior periods were restated to reflect the retrospective application of adopting the new accounting guidance related to the Company?s investments in qualified affordable housing projects Accounting Standard Update ("ASU") 2014-01. See Note 10 of the Notes to Consolidated Financial Statements for additional information.

BASIS_OF_PRESENTATION

BASIS OF PRESENTATION	3 Months Ended
	Mar. 31, 2015
BASIS OF PRESENTATION
BASIS OF PRESENTATION
	NOTE 1 —  BASIS OF PRESENTATION
	The consolidated financial statements in this Form 10-Q include the accounts of East West Bancorp, Inc. (referred to herein on an unconsolidated basis as “East West” and on a consolidated basis as the “Company”) and its wholly-owned subsidiaries, East West Bank and subsidiaries (the “Bank”) and East West Insurance Services, Inc. Intercompany transactions and balances have been eliminated in the consolidations. As of March 31, 2015, East West has six wholly-owned subsidiaries that are statutory business trusts (the “Trusts”), one of which was the result of the acquisition of MetroCorp Bancshares, Inc. (“MetroCorp”) during the first quarter of 2014, as discussed in Note 3 to the Company’s consolidated financial statements. In accordance with Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Topic 810, the Trusts are not consolidated into the Company.
	The interim consolidated financial statements, presented in accordance with accounting principles generally accepted in the United States of America (“GAAP”) and general practices within the banking industry, are unaudited and reflect all adjustments that, in the opinion of management, are necessary for a fair statement of financial statements for the interim periods. Certain prior year balances and notes have been reclassified to conform to current period presentation. The Company restated prior period financial statements to reflect the impact of the retrospective application of Accounting Standards Update (“ASU”) 2014-01, Investments—Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Qualified Affordable Housing Projects. See Note 10 to the Company’s consolidated financial statements for details. The current period’s results of operations are not necessarily indicative of results that may be expected for any other interim period or for the year as a whole. Events subsequent to the consolidated balance sheet date have been evaluated through the date the financial statements are issued for inclusion in the accompanying financial statements. The unaudited consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes included in the Company’s 2014 Annual Report.

CURRENT_ACCOUNTING_DEVELOPMENT

CURRENT ACCOUNTING DEVELOPMENTS	3 Months Ended
	Mar. 31, 2015
CURRENT ACCOUNTING DEVELOPMENTS
CURRENT ACCOUNTING DEVELOPMENTS
	NOTE 2 —  CURRENT ACCOUNTING DEVELOPMENTS
	New Accounting Pronouncements Adopted
	In January 2014, the FASB issued ASU 2014-01, Investments—Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Qualified Affordable Housing Projects. ASU 2014-01 permits reporting entities to make an accounting policy election to account for their investments in qualified affordable housing projects using the proportional amortization method if certain conditions are met. Under the proportional amortization method, the Company amortizes the initial cost of the investment in proportion to the tax credits and other tax benefits received and recognizes the amortization expense in the income statement as a component of income tax expense. The Company adopted this guidance in the first quarter of 2015 with retrospective application to all periods presented. See Note 10 for details regarding this adoption.
	In January 2014, the FASB issued ASU 2014-04, Receivables—Troubled Debt Restructurings by Creditors (Subtopic 310-40): Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans upon Foreclosure. ASU 2014-04 clarifies when an in substance repossession or foreclosure occurs that would require a transfer of mortgage loans collateralized by residential real estate properties to other real estate owned (“OREO”). The guidance also requires disclosure of the amount of foreclosed residential real estate property held by the creditor and the recorded investment in residential real estate mortgage loans that are in process of foreclosure. The Company adopted this guidance in the first quarter 2015 with prospective application. The adoption of this guidance did not have a material impact on the Company’s consolidated financial statements as this guidance was consistent with our prior practice. See Note 9 for details regarding this adoption.
	Recent Accounting Pronouncements
	In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606). The new guidance replaces existing revenue recognition guidance for contracts to provide goods or services to customers and amends existing guidance related to recognition of gains and losses on the sale of certain nonfinancial assets such as real estate.  ASU 2014-09 establishes a principles-based approach to recognizing revenue that applies to all contracts other than those covered by other authoritative GAAP guidance. Quantitative and qualitative disclosures regarding the nature, amount, timing and uncertainty of revenue and cash flows are also required.  ASU 2014-09 is effective for interim and annual periods beginning after December 15, 2016 and is applied on either a modified retrospective or full retrospective basis. Early adoption is not permitted. The Company is currently evaluating the impact on its consolidated financial statements.
	In February 2015, the FASB issued ASU 2015-02, Consolidation (Topic 810): Amendments to the Consolidation Analysis to improve targeted areas of the consolidation guidance and reduce the number of consolidation models. The Company may either apply the amendments retrospectively or use a modified retrospective approach. ASU 2015-02 is effective for interim and annual periods beginning after December 15, 2015. Early adoption is permitted, including adoption in an interim period. The Company does not expect the adoption of this guidance to have a material effect on its consolidated financial statements.
	In April 2015, the FASB issued ASU 2015-03, Interest—Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs. ASU 2015-03 simplifies the presentation of debt issuance costs related to a recognized debt liability to be presented in the balance sheet as a direct deduction from the carrying amount of debt liability, consistent with debt discounts. The Company would apply the new guidance retrospectively to all prior periods. ASU 2015-03 is effective for interim and annual periods beginning after December 15, 2015. Early adoption is permitted if the guidance is applied as of the beginning of the annual period of adoption. The Company does not expect the adoption of this guidance to have a material effect on its consolidated financial statements.

BUSINESS_COMBINATION

BUSINESS COMBINATION	3 Months Ended
	Mar. 31, 2015
BUSINESS COMBINATION
BUSINESS COMBINATION
	NOTE 3 —  BUSINESS COMBINATION
	There were no business combinations during the quarter ended March 31, 2015.
	On January 17, 2014, the Company completed the acquisition of MetroCorp, parent of MetroBank, N.A. and Metro United Bank. The purchase consideration was satisfied with two thirds East West stock and one third cash. The fair value of the consideration transferred in the acquisition of MetroCorp was $291.4 million, which consisted of 5,583,093 shares of East West common stock fair valued at $190.8 million at the date of acquisition and $89.4 million in cash, $2.4 million of additional cash to MetroCorp stock option holders and a MetroCorp warrant, fair valued at $8.8 million, assumed by the Company. The assets acquired and liabilities assumed have been accounted for under the acquisition method of accounting. At the acquisition date, the Company recorded total fair value of assets and liabilities acquired of $1.70 billion and $1.41 billion, respectively. Goodwill from the acquisition represents the excess of the purchase price over the fair value of the net tangible and intangible assets acquired and is not deductible for tax purposes. The Company recorded $121.0 million of goodwill at the MetroCorp acquisition date. During the fourth quarter of 2014, the Company recorded additional tax and BOLI adjustments of $10.3 million and $0.7 million, respectively related to the MetroCorp acquisition, resulting in an increase to goodwill to $132.0 million.
	Refer to Note 2 — Business Combinations in Item 8 of the Company’s 2014 Form 10-K for additional details related to the MetroCorp acquisition.

FAIR_VALUE_MEASUREMENT_AND_FAI

FAIR VALUE MEASUREMENT AND FAIR VALUE OF FINANCIAL INSTRUMENTS	3 Months Ended
	Mar. 31, 2015
FAIR VALUE MEASUREMENT AND FAIR VALUE OF FINANCIAL INSTRUMENTS
FAIR VALUE MEASUREMENT AND FAIR VALUE OF FINANCIAL INSTRUMENTS
	NOTE 4 —  FAIR VALUE MEASUREMENT AND FAIR VALUE OF FINANCIAL INSTRUMENTS
	In determining fair value, the Company uses various methods including market and income approaches. Based on these approaches, the Company utilizes certain assumptions that market participants would use in pricing the asset or liability. These inputs can be readily observable, market corroborated, or generally unobservable inputs. The Company utilizes valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs. Based on the observability of the inputs used in the valuation techniques, the Company is required to provide the following information according to the fair value hierarchy noted below. The hierarchy is based on the quality and reliability of the information used to determine fair values. The hierarchy gives the highest priority to quoted prices available in active markets and the lowest priority to data lacking transparency. Financial assets and liabilities carried at fair value will be classified and disclosed in one of the following three categories:
		Level 1 — Valuation is based on quoted prices for identical instruments traded in active markets.
		Level 2 — Valuation is based on quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations whose inputs are observable and can be corroborated by market data.
		Level 3 — Valuation is based on significant unobservable inputs for determining the fair value of assets or liabilities. These significant unobservable inputs reflect assumptions that market participants may use in pricing the assets or liabilities.
	In determining the appropriate hierarchy levels, the Company performs an analysis of the assets and liabilities that are subject to fair value disclosure. These assets and liabilities are reported on the consolidated balance sheets at their fair values as of March 31, 2015 and December 31, 2014. Financial assets and liabilities are classified in their entirety based on the lowest level of input that is significant to their fair value measurement.
	The following tables present both financial assets and liabilities that are measured at fair value on a recurring basis as of March 31, 2015 and December 31, 2014:
	Assets (Liabilities) Measured at Fair Value on a Recurring Basis
	as of March 31, 2015
	($ in thousands)		Fair Value			Quoted Prices in			Significant			Significant
			Measurements			Active Markets			Other			Unobservable
			March 31, 2015			for Identical			Observable			Inputs
						Assets			Inputs			(Level 3)
						(Level 1)			(Level 2)
	Available-for-sale investment securities:
	U.S. Treasury securities		$	1,172,226		$	1,172,226		$	—		$	—
	U.S. government agency and U.S. government sponsored enterprise debt securities		411,966			—			411,966			—
	U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities:
	Commercial mortgage-backed securities		95,235			—			95,235			—
	Residential mortgage-backed securities		727,356			—			727,356			—
	Municipal securities		191,246			—			191,246			—
	Other residential mortgage-backed securities:
	Investment grade		51,501			—			51,501			—
	Corporate debt securities:
	Investment grade		140,401			—			140,401			—
	Non-investment grade		9,501			—			9,501			—
	Other securities		41,653			32,477			9,176			—
	Total available-for-sale investment securities		$	2,841,085		$	1,204,703		$	1,636,382		$	—
	Derivative assets:
	Foreign exchange options		$	3,683		$	—		$	3,683		$	—
	Interest rate swaps and caps		$	66,060		$	—		$	66,060		$	—
	Foreign exchange contracts		$	13,340		$	—		$	13,340		$	—
	Derivative liabilities:
	Interest rate swaps on certificates of deposits		$	-6,370		$	—		$	-6,370		$	—
	Interest rate swaps and caps		$	-66,914		$	—		$	-66,914		$	—
	Foreign exchange contracts		$	-13,080		$	—		$	-13,080		$	—
	Embedded derivative liabilities		$	-3,412		$	—		$	—		$	(3,412	)
	Assets (Liabilities) Measured at Fair Value on a Recurring Basis
	as of December 31, 2014
	($ in thousands)		Fair Value			Quoted Prices in			Significant			Significant
			Measurements			Active Markets			Other			Unobservable
			December 31, 2014			for Identical			Observable			Inputs
						Assets			Inputs			(Level 3)
						(Level 1)			(Level 2)
	Available-for-sale investment securities:
	U.S. Treasury securities		$	873,435		$	873,435		$	—		$	—
	U.S. government agency and U.S. government sponsored enterprise debt securities		311,024			—			311,024			—
	U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities:
	Commercial mortgage-backed securities		141,420			—			141,420			—
	Residential mortgage-backed securities		791,088			—			791,088			—
	Municipal securities		250,448			—			250,448			—
	Other residential mortgage-backed securities:
	Investment grade		53,918			—			53,918			—
	Other commercial mortgage-backed securities:
	Investment grade		34,053			—			34,053			—
	Corporate debt securities:
	Investment grade		115,182			—			115,182			—
	Non-investment grade		14,681			—			8,153			6,528
	Other securities		41,116			32,105			9,011			—
	Total available-for-sale investment securities		$	2,626,365		$	905,540		$	1,714,297		$	6,528
	Derivative assets:
	Foreign exchange options		$	6,136		$	—		$	6,136		$	—
	Interest rate swaps and caps		$	41,534		$	—		$	41,534		$	—
Foreign exchange contracts		$	8,123		$	—		$	8,123		$	—
Derivative liabilities:
Interest rate swaps on certificates of deposits		$	-9,922		$	—		$	-9,922		$	—
Interest rate swaps and caps		$	-41,779		$	—		$	-41,779		$	—
Foreign exchange contracts		$	-9,171		$	—		$	-9,171		$	—
Embedded derivative liabilities		$	-3,392		$	—		$	—		$	(3,392	)
Transfers into or out of fair value hierarchy classifications are made if the significant inputs used in the financial models measuring the fair values of the assets and liabilities became unobservable or observable, respectively, in the current marketplace. The Company’s policy with respect to transfers between levels of the fair value hierarchy is to recognize transfers into and out of each level as of the end of the reporting period. During the three months ended March 31, 2015, the Company transferred $1.1 million of assets measured on a recurring basis out of Level 3 into Level 2 due to increased market liquidity and price observability on certain pooled trust preferred securities. There were no transfers of assets measured on a recurring basis in and out of Level 1, Level 2 or Level 3 during the three months ended March 31, 2014.
At each reporting period, all assets and liabilities for which the fair value measurement is based on significant unobservable inputs are classified as Level 3.  The following tables present a reconciliation of the beginning and ending balances for major asset and liability categories measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the three months ended March 31, 2015 and 2014:
								2014
		2015
($ in thousands)		Corporate Debt			Embedded			Corporate Debt			Embedded
		Securities:			Derivatives			Securities:			Derivatives
		Non-Investment Grade			Liabilities			Non-Investment Grade			Liabilities
Beginning balance, January 1		$	6,528		$	-3,392		$	6,371		$	(3,655	)
Total gains or (losses) for the period:
Included in earnings (1)		960			-20			—			257
Included in other comprehensive income (unrealized)(2)		922			—			434			—
Purchases, issues, sales, settlements:
Purchases		—			—			—			—
Issues		—			—			—			—
Sales		-7,219			—			—			—
Settlements		-98			—			-88			—
Transfer from investment grade to non-investment grade		—			—			—			—
Transfers in and/or out of Level 3		-1,093			—			—			—
Ending balance, March 31		$	—		$	-3,412		$	6,717		$	(3,398	)
Changes in unrealized losses included in earnings relating to assets and liabilities held at the end of March 31		$	—		$	20		$	—		$	(257	)
	-1		Realized gains or losses of corporate debt securities and embedded derivative liabilities are included in net gains on sales of investment securities and other operating expense, respectively, in the consolidated statements of income.
	-2		Unrealized gains or losses on available-for-sale investment securities are reported in other comprehensive income, net of tax, in the consolidated statements of comprehensive income.
The following table presents quantitative information about significant unobservable inputs used in the valuation of assets and liabilities measured on a recurring basis classified as Level 3 as of March 31, 2015 and December 31, 2014:
($ in thousands)						Valuation		Unobservable		Range of Inputs		Weighted
			Fair Value			Technique(s)		Input(s)				Average
			Measurements
			(Level 3)
March 31, 2015
Embedded derivative liabilities			$	(3,412	)	Discounted cash flow		Credit risk		0.03% - 0.07%		0.06%
December 31, 2014
Available-for-sale investment securities:
Corporate debt securities:
Non-investment grade			$	6,528		Discounted cash flow		Constant prepayment rate		0.00% - 1.00%		0.73%
								Constant default rate		0.75% - 1.20%		0.87%
								Loss severity		85.00%		85.00%
								Discount margin		4.50% - 7.50%		6.94%
Embedded derivative liabilities			$	(3,392	)	Discounted cash flow		Credit risk		0.12% - 0.14%		0.13%
Assets measured at fair value on a nonrecurring basis using significant unobservable inputs include certain non-purchased credit impaired loans (“Non-PCI loans”) and OREO.  The inputs and assumptions for nonrecurring Level 3 fair value measurements include adjustments to external and internal appraisals for changes in the market, assumptions by appraiser embedded into appraisals, probability weighting of broker price opinions, and management’s adjustments for other relevant factors and market trends. See Note 9 for detailed discussion of non-PCI loans.
The following tables present assets measured at fair value on a nonrecurring basis as of March 31, 2015 and December 31, 2014:
		Assets Measured at Fair Value on a Nonrecurring Basis
		as of March 31, 2015
($ in thousands)		Fair Value			Quoted Prices in			Significant			Significant
		Measurements			Active Markets			Other			Unobservable
					for Identical Assets			Observable			Inputs
					(Level 1)			Inputs			(Level 3)
								(Level 2)
Non-PCI impaired loans:
Commercial Real Estate (“CRE”)		$	13,648		$	—		$	—		$	13,648
Commercial and Industrial (“C&I”)		11,356			—			—			11,356
Residential		14,306			—			—			14,306
Consumer		107			—			—			107
Total non-PCI impaired loans		$	39,417		$	—		$	—		$	39,417
OREO		$	1,676		$	—		$	—		$	1,676
		Assets Measured at Fair Value on a Nonrecurring Basis
		as of December 31, 2014
($ in thousands)		Fair Value			Quoted Prices in			Significant			Significant
		Measurements			Active Markets			Other			Unobservable
					for Identical Assets			Observable			Inputs
					(Level 1)			Inputs			(Level 3)
								(Level 2)
Non-PCI impaired loans:
CRE		$	26,089		$	—		$	—		$	26,089
C&I		16,581			—			—			16,581
Residential		25,034			—			—			25,034
Consumer		107			—			—			107
Total non-PCI impaired loans		$	67,811		$	—		$	—		$	67,811
OREO		$	17,521		$	—		$	—		$	17,521
The following table presents fair value adjustments of certain assets measured on a nonrecurring basis recognized during the three months ended and still held as of March 31, 2015 and 2014:
		Three Months Ended March 31,
($ in thousands)		2015			2014
Non-PCI impaired loans:
CRE		$	841		$	-464
C&I		-2,470			-6,530
Residential		-239			-365
Consumer		—			—
Total non-PCI impaired loans		$	-1,868		$	-7,359
OREO		$	-277		$	-526
The following table presents quantitative information about significant unobservable inputs used in the valuation of assets measured on a nonrecurring basis classified as Level 3 as of March 31, 2015 and December 31, 2014:
($ in thousands)		Fair Value			Valuation		Unobservable		Range of Inputs		Weighted
		Measurements			Technique(s)		Input(s)				Average
		(Level 3)
March 31, 2015
Non-PCI impaired loans		$	3,578		Discounted cash flow		Discount rate		0% - 86%		58%
		$	35,839		Market comparables		Discount rate (1)		0% - 100%		7%
OREO		$	1,676		Appraisal		Selling cost		8%		8%
December 31, 2014
Non-PCI impaired loans		$	11,499		Discounted cash flow		Discount rate		0% - 81%		49%
		$	56,312		Market comparables		Discount rate (1)		0% - 100%		4%
OREO		$	17,521		Appraisal		Selling cost		8%		8%
	-1		Discount rate is adjusted for factors such as liquidation cost of collateral and selling costs.
The following tables present the carrying and fair values per the fair value hierarchy of certain financial instruments, excluding those measured at fair value on a recurring basis, as of March 31, 2015 and December 31, 2014:
		March 31, 2015
($ in thousands)		Carrying			Level 1			Level 2			Level 3			Estimated
		Amount												Fair Value
Financial Assets:
Cash and cash equivalents		$	1,886,199		$	1,886,199		$	—		$	—		$	1,886,199
Short-term investments		$	325,350		$	—		$	325,350		$	—		$	325,350
Securities purchased under resale agreements		$	1,550,000		$	—		$	1,597,101		$	—		$	1,597,101
Loans held for sale		$	196,111		$	—		$	196,111		$	—		$	196,111
Loans receivable, net		$	21,116,931		$	—		$	—		$	20,905,743		$	20,905,743
Investment in Federal Home Loan Bank stock		$	28,603		$	—		$	28,603		$	—		$	28,603
Investment in Federal Reserve Bank stock		$	54,556		$	—		$	54,556		$	—		$	54,556
Accrued interest receivable		$	86,186		$	—		$	86,186		$	—		$	86,186
Financial Liabilities:
Customer deposit accounts:
Demand, savings and money market deposits		$	18,786,462		$	—		$	18,786,462		$	—		$	18,786,462
Time deposits		$	6,376,371		$	—		$	—		$	6,358,260		$	6,358,260
Federal Home Loan Bank advances		$	317,777		$	—		$	334,286		$	—		$	334,286
Securities sold under repurchase agreements		$	695,000		$	—		$	751,270		$	—		$	751,270
Accrued interest payable		$	12,141		$	—		$	12,141		$	—		$	12,141
Long-term debt		$	220,905		$	—		$	207,906		$	—		$	207,906
		December 31, 2014
($ in thousands)		Carrying			Level 1			Level 2			Level 3			Estimated
		Amount												Fair Value
Financial Assets:
Cash and cash equivalents		$	1,039,885		$	1,039,885		$	—		$	—		$	1,039,885
Short-term investments		$	338,714		$	—		$	338,714		$	—		$	338,714
Securities purchased under resale agreements		$	1,225,000		$	—		$	1,191,060		$	—		$	1,191,060
Loans held for sale		$	45,950		$	—		$	45,950		$	—		$	45,950
Loans receivable, net		$	21,468,270		$	—		$	—		$	20,997,379		$	20,997,379
Investment in Federal Home Loan Bank stock		$	31,239		$	—		$	31,239		$	—		$	31,239
Investment in Federal Reserve Bank stock		$	54,451		$	—		$	54,451		$	—		$	54,451
Accrued interest receivable		$	88,303		$	—		$	88,303		$	—		$	88,303
Financial Liabilities:
Customer deposit accounts:
Demand, savings and money market deposits		$	17,896,035		$	—		$	17,896,035		$	—		$	17,896,035
Time deposits		$	6,112,739		$	—		$	—		$	6,095,217		$	6,095,217
Federal Home Loan Bank advances		$	317,241		$	—		$	336,302		$	—		$	336,302
Securities sold under repurchase agreements		$	795,000		$	—		$	870,434		$	—		$	870,434
Accrued interest payable		$	11,303		$	—		$	11,303		$	—		$	11,303
Long-term debt		$	225,848		$	—		$	205,777		$	—		$	205,777
The following is a description of the valuation methodologies and significant assumptions used in estimating fair value of financial instruments.
Cash and Cash Equivalents — The carrying amount approximates fair value due to the short-term nature of these instruments. Due to the short-term nature of these instruments, the estimated fair value is classified as Level 1.
Short-Term Investments — The fair value of short-term investments generally approximates their book value due to their short maturities.  Due to the observable nature of the inputs used in deriving the estimated fair value, these instruments are classified as Level 2.
Securities purchased under resale agreements (“Resale Agreements”) — Resale agreements with original maturities of 90 days or less are included in cash and cash equivalents.  The fair value of securities purchased under resale agreements with original maturities of more than 90 days is estimated by discounting the cash flows based on expected maturities or repricing dates utilizing estimated market discount rates.  Due to the observable nature of the inputs used in deriving the estimated fair values, these instruments are classified as Level 2.
Available-for-Sale Investment Securities — When available, the Company uses quoted market prices to determine the fair value of available-for-sale investment securities; such items are classified as Level 1.  Level 1 available-for-sale investment securities mainly include U.S. treasury securities.  The fair values of other available-for-sale investment securities are generally determined by independent external pricing service providers who have experience in valuing these securities, or by average of quoted market prices obtained from independent external brokers. In obtaining such valuation information from third parties, the Company has reviewed the methodologies used to develop the resulting fair values.  The available-for-sale investment securities valued using such methods are classified as Level 2.
Loans Held for Sale — The Company’s loans held for sale are carried at the lower of cost or fair value. These loans are comprised of single-family and student loans.  The fair value of loans held for sale is derived from current market prices and comparative current sales. As such, the Company records any fair value adjustments on a nonrecurring basis. Loans held for sale are classified as Level 2.
Non-PCI Impaired Loans — The Company evaluates non-PCI impaired loans on a nonrecurring basis. The fair value of non-PCI impaired loans is measured using the market comparables technique. For CRE loans and C&I loans, the fair value is based on each loan’s observable market price or the fair value of the collateral less cost to sell, if the loan is collateral dependent. The fair value of collateral is based on third party appraisals or evaluations which are reviewed by the Company’s appraisal department. Updated appraisals and evaluations are obtained on a regular basis or at least annually. On a quarterly basis, all appraisals and evaluations of nonperforming assets are reviewed to assess the current carrying value and to ensure that the current carrying value is appropriate. For certain impaired loans, the Company utilizes the discounted cash flow approach and applies a discount rate derived from historical data. For impaired loans with an unpaid balance below a certain threshold, the Company applies historical loss rates to derive the fair value. The significant unobservable inputs used in the fair value measurement of non-PCI impaired loans are discount rates applied based on liquidation cost of collateral and selling costs. Non-PCI impaired loans are classified as Level 3.
Loans Receivable, net — The fair value of loans is determined based on a discounted cash flow approach considered for an exit price value. The discount rate is derived from the associated yield curve plus spreads, and reflects the offering rates in the market for loans with similar financial characteristics. No adjustments have been made for changes in credit within any of the loan portfolios. It is management’s opinion that the allowance for loan losses pertaining to performing and nonperforming loans results in a fair value valuation of credit for such loans. Due to the unobservable nature of the inputs used in deriving the estimated fair values, these instruments are classified as Level 3.
OREO — The Company’s OREO represents properties acquired through foreclosure or through full or partial satisfaction of loans receivable, which are recorded at estimated fair value less the cost to sell at the time of foreclosure and at the lower of cost or estimated fair value less the cost to sell subsequent to acquisition. The fair values of OREO properties are based on third party appraisals, broker price opinions or accepted written offers. Refer to the “Non-PCI Impaired Loans” section above for a detailed discussion on the Company’s policies and procedures related to appraisals and evaluations. The Company uses the market comparables valuation technique to measure the fair value of OREO properties. The significant unobservable input used is the selling cost. OREO properties are classified as Level 3.
Investment in Federal Home Loan Bank (“FHLB”) Stock and Federal Reserve Bank Stock — The carrying amounts of the Company’s investments in FHLB Stock and Federal Reserve Bank Stock approximate fair value. The valuation of these investments is classified as Level 2.  Ownership of these securities is restricted to member banks and the securities do not have a readily determinable fair value.  Purchases and sales of these securities are at par value.
Accrued Interest Receivable — The carrying amount approximates fair value due to the short-term nature of these instruments. Due to the observable nature of the inputs used in deriving the estimated fair value, these instruments are classified as Level 2.
Foreign Exchange Options — The Company entered into foreign exchange option contracts with major investment firms in 2010. The settlement amount is determined based upon the performance of the Chinese currency Renminbi (“RMB”) relative to the U.S. Dollar (“USD”) over the 5-year term of the contracts. The performance amount is computed based on the average quarterly value of the RMB compared to the USD as compared to the initial value. The fair value of these derivative contracts is provided by third parties and is determined based on the change in the RMB and the volatility of the option over the life of the agreement. The option value is derived based on the volatility of the option, interest rate, currency rate and time remaining to maturity. The Company’s consideration of the counterparty’s credit risk resulted in a nominal adjustment to the valuation of the foreign exchange options as of March 31, 2015 and December 31, 2014. Due to the observable nature of the inputs used in deriving the fair value of these derivative contracts, the valuation of the option contracts is classified as Level 2.
Interest Rate Swaps and Caps — The Company enters into interest rate swap and cap contracts with institutional counterparties to hedge against interest rate swap and cap products offered to bank customers. These products allow borrowers to lock in attractive intermediate and long-term interest rates by entering into an interest rate swap or cap contract with the Company, resulting in the customer obtaining a synthetic fixed rate loan. The Company also enters into interest rate swap contracts with institutional counterparties to hedge against certificates of deposit issued. This product allows the Company to lock in attractive floating rate funding. The fair value of interest rate swap and cap contracts is based on a discounted cash flow approach. The counterparty’s credit risk is considered in the valuation of interest rate swaps and caps as of March 31, 2015 and December 31, 2014. Due to the observable nature of the inputs used in deriving the fair value of these derivative contracts, the valuation of interest rate swaps and caps is classified as Level 2.
Foreign Exchange Contracts — The Company enters into short-term foreign exchange contracts to purchase/sell foreign currencies at set rates in the future. These contracts economically hedge against foreign exchange rate fluctuations.  The Company also enters into contracts with institutional counterparties to hedge against foreign exchange products offered to bank customers. These products allow customers to hedge the foreign exchange risk of their deposits and loans denominated in foreign currencies. The Company assumes minimal foreign exchange rate risk as the contract with the customer and the contract with the institutional party mirror each other. The fair value is determined at each reporting period based on the change in the foreign exchange rate. Given the short-term nature of the contracts, the counterparties’ credit risks are considered nominal and resulted in no adjustments to the valuation of the short-term foreign exchange contracts as of March 31, 2015 and December 31, 2014. The valuation of these contracts is classified as Level 2 due to the observable nature of the inputs used in deriving the fair value.
Customer Deposits — The carrying amount approximates fair value for demand and interest checking deposits, savings deposits, and certain money market deposits as the amounts are payable on demand as of the balance sheet date. Due to the observable nature of the inputs used in deriving the estimated fair value, these instruments are classified as Level 2. For time deposits, the fair value is based on the discounted value of contractual cash flows using the rates offered by the Company. Due to the unobservable nature of the inputs used in deriving the estimated fair values, time deposits are classified as Level 3.
FHLB Advances — The fair value of FHLB advances is estimated based on the discounted value of contractual cash flows, using rates currently offered by the FHLB of San Francisco for advances with similar remaining maturities at each reporting date. Due to the observable nature of the inputs used in deriving the estimated fair values, these instruments are classified as Level 2.
Securities under repurchase agreements (“Repurchase Agreements”) — For repurchase agreements with original maturities of 90 days or less, the carrying amount approximates fair value due to the short-term nature of these instruments. As of March 31, 2015 and December 31, 2014, all of the repurchase agreements were long-term in nature and the fair values of the repurchase agreements were calculated by discounting future cash flows based on expected maturities or repricing dates, utilizing estimated market discount rates, and taking into consideration the call features of each instrument. Due to the observable nature of the inputs used in deriving the estimated fair values, these instruments are classified as Level 2.
Accrued Interest Payable — The carrying amount approximates fair value due to the short-term nature of these instruments. Due to the observable nature of the inputs used in deriving the estimated fair value, these instruments are classified as Level 2.
Long-Term Debt — The fair value of long-term debt is estimated by discounting the cash flows through maturity based on current market rates the Company would pay for new issuances. Due to the observable nature of the inputs used in deriving the estimated fair value, long-term debt is classified as Level 2.
Embedded Derivative Liabilities — During 2010, the Company entered into foreign exchange option contracts with major brokerage firms to economically hedge against foreign exchange fluctuations in certain certificates of deposits available to its customers. These certificates of deposits have a term of 5 years and pay interest based on the performance of the RMB relative to the USD. Under ASC 815, a certificate of deposit that pays interest based on changes in foreign exchange rates is a hybrid instrument with an embedded derivative that must be accounted for separately from the host contract (i.e., the certificate of deposit). The fair value of these embedded derivatives is based on the discounted cash flow approach. The liabilities are divided between the portion under FDIC insurance coverage and the non-insured portion. For the FDIC insured portion, the Company applied a risk premium comparable to an agency security risk premium. For the non-insured portion, the Company considered its own credit risk in determining the valuation by applying a risk premium based on the Company’s institutional credit rating. Total credit valuation adjustments on derivative liabilities were nominal as of March 31, 2015 and December 31, 2014. Increases (decreases), if any, of those inputs in isolation would result in a lower (higher) fair value measurement.  The valuation of the embedded derivative liabilities falls within Level 3 of the fair value hierarchy since the significant inputs used in deriving the fair value of these derivative contracts are not directly observable.
The fair value estimates presented herein are based on pertinent information available to management as of each reporting date. Although the Company is not aware of any factors that would significantly affect the estimated fair value amounts, such amounts have not been comprehensively revalued for purposes of these financial statements since that date, and therefore, current estimates of fair value may differ significantly from the amounts presented herein.

STOCKBASED_COMPENSATION

STOCK-BASED COMPENSATION	3 Months Ended
	Mar. 31, 2015
STOCK-BASED COMPENSATION
STOCK-BASED COMPENSATION
	NOTE 5 —STOCK-BASED COMPENSATION
	The Company issues stock options and restricted stock awards to employees under share-based compensation plans. During the three months ended March 31, 2015 and 2014, total compensation expense related to restricted stock awards reduced income before taxes by $4.0 million and $3.2 million, respectively. The net tax benefit recognized in equity for stock compensation plans was $3.1 million and $3.7 million for the three months ended March 31, 2015 and 2014, respectively.
	As of March 31, 2015, there were 3,050,063 shares available to be issued, subject to the Company’s current 1998 Stock Incentive Plan, as amended.
	Stock Options — The Company issues fixed stock options to certain employees, officers, and directors. Stock options are issued at the current market price on the date of grant with a four-year vesting period and contractual term of seven years. The Company issues new shares upon the exercise of stock options. The Company did not issue any stock options during the three months ended March 31, 2015 and 2014.
	The following table presents the activity for the Company’s stock options as of and for the three months ended March 31, 2015:
		Shares	Weighted		Weighted	Aggregate
			Average		Average	Intrinsic
			Exercise		Remaining	Value
			Price		Contractual	(In thousands)
					Term
	Outstanding at beginning of period	42,116	$	20.75	—	$	—
	Granted	—	—		—	—
	Exercised	-39,751	21.09		—	—
	Expired	—	—		—	—
	Outstanding at end of period	2,365	$	14.95	0.77 years	$	60
	Vested or expected to vest at end of period	2,365	$	14.95	0.77 years	$	60
	Exercisable at end of period	2,365	$	14.95	0.77 years	$	60
	The Company received $838 thousand and $283 thousand during the three months ended March 31, 2015 and 2014, respectively, in cash proceeds from stock option exercises. The intrinsic value of the options exercised was $693 thousand and $194 thousand for the three months ended March 31, 2015 and 2014, respectively. The net tax benefit recognized from stock option exercises was $291 thousand for the three months ended March 31, 2015 compared to $82 thousand for the three months ended March 31, 2014.
	As of March 31, 2015, all stock options are fully vested and all compensation cost related to stock options has been recognized.
	Restricted Stock Awards — In addition to stock options, the Company also grants restricted stock awards to directors, officers and employees. The restricted stock awards vest ratably in three years or cliff vest in three or five years of continued employment from the date of grant. Additionally, some of the restricted stock awards include a Company financial performance requirement for vesting. The Company becomes entitled to an income tax deduction in an amount equal to the taxable income reported by the holders of the restricted stock when the restrictions are released and the shares are issued. Restricted stock awards are forfeited if officers and employees terminate employment prior to the lapsing of restrictions or if established financial goals are not achieved. The Company records forfeitures of issued restricted stock as treasury share repurchases.
	The following table presents a summary of the activity for the Company’s time-based and performance-based restricted stock awards as of March 31, 2015, including changes during the three months ended March 31, 2015:
		March 31, 2015
		Restricted Stock Awards
		Time-Based			Performance-Based
		Shares	Weighted		Shares	Weighted
			Average			Average
			Price			Price
	Outstanding at beginning of period	751,020	$	30.61	518,553	$	29.64
	Granted	411,802	38.85		149,284	39.95
	Vested	-207,495	23.27		-144,445	22.05
	Forfeited	-13,119	34.05		—	—
	Outstanding at end of period	942,208	$	35.78	523,392	$	35.64
	There were no restricted stock grants to outside directors during the three months ended March 31, 2015 and 2014.
	Restricted stock awards are valued at the closing price of the Company’s stock on the date of award. The weighted average fair values of time-based restricted stock awards granted during the three months ended March 31, 2015 and 2014 were $38.85 and $36.83, respectively. The weighted average fair value of performance-based restricted stock awards granted during the three months ended March 31, 2015 and 2014 were $39.95 and $36.85, respectively. The total fair value of time-based restricted stock awards vested during the three months ended March 31, 2015 and 2014 was $8.4 million and $14.6 million, respectively. The total fair value of performance-based restricted stock awards vested during the three months ended March 31, 2015 and 2014 were $5.8 million and $2.7 million, respectively.
	As of March 31, 2015, total unrecognized compensation cost related to time-based and performance-based restricted stock awards amounted to $29.3 million and $12.3 million, respectively. This cost is expected to be recognized over a weighted average period of 2.41 years and 2.29 years, respectively.

SECURITIES_PURCHASED_UNDER_RES

SECURITIES PURCHASED UNDER RESALE AGREEMENTS AND SOLD UNDER REPURCHASE AGREEMENTS

3 Months Ended

Mar. 31, 2015

SECURITIES PURCHASED UNDER RESALE AGREEMENTS AND SOLD UNDER REPURCHASE AGREEMENTS

SECURITIES PURCHASED UNDER RESALE AGREEMENTS AND SOLD UNDER REPURCHASE AGREEMENTS

NOTE 6 —      SECURITIES PURCHASED UNDER RESALE AGREEMENTS AND SOLD UNDER REPURCHASE AGREEMENTS

Resale agreements

Resale agreements are recorded at the amounts at which the securities were acquired. The market values of the underlying securities collateralizing the related receivable of the resale agreements, including accrued interest, are monitored. Additional collateral may be requested by the Company from the counterparty when deemed appropriate. Gross resale agreements were $1.85 billion and $1.43 billion as of March 31, 2015 and December 31, 2014, respectively. The weighted average interest rates were 1.42% and 1.55% as of March 31, 2015 and December 31, 2014, respectively.

Repurchase agreements

Long-term repurchase agreements are accounted for as collateralized financing transactions and recorded at the amounts at which the securities were sold. The collaterals for these agreements are mainly comprised of U.S. government agency and U.S. government sponsored enterprise debt and mortgage-backed securities. The Company may have to provide additional collateral for the repurchase agreements, as necessary. Gross repurchase agreements were $995.0 million as of March 31, 2015 and December 31, 2014. The weighted average interest rate was 3.70% as of March 31, 2015 and December 31, 2014.

Balance Sheet Offsetting

The Company’s resale agreements and repurchase agreements are transacted under legally enforceable master repurchase agreements that give the Company, in the event of default by the counterparty, the right to liquidate securities held and to offset receivables and payables with the same counterparty. The Company nets repurchase and resale transactions with the same counterparty on the consolidated balance sheets where it has a legally enforceable master netting agreement and when the transactions are eligible for netting under ASC 210-20-45. Collateral pledged consists of securities which are not netted on the consolidated balance sheets against the related collateralized liability. Collateral accepted includes securities that are not recognized on the consolidated balance sheets. Collateral accepted or pledged in resale and repurchase agreements with other financial institutions also may be sold or re-pledged by the secured party, but is usually delivered to and held by the third party trustees. The following tables present resale and repurchase agreements included on the consolidated balance sheets as of March 31, 2015 and December 31, 2014:

($ in thousands)

As of March 31, 2015

Net Amounts of

Gross Amounts Not Offset on the

Gross Amounts

Assets Presented

Consolidated Balance Sheet

Gross Amounts

Offset on the

on the

of Recognized

Consolidated

Consolidated

Financial

Collateral

Assets

Assets

Balance Sheet

Balance Sheet

Instruments

Received

Net Amount

Resale agreements

$

1,850,000

$

-300,000

$

1,550,000

$

-350,000

$

-1,195,203

$

4,797

-1

-2

Net Amounts of

Gross Amounts Not Offset on the

Liabilities

Consolidated Balance Sheet

Gross Amounts

Presented

Gross Amounts

Offset on the

on the

of Recognized

Consolidated

Consolidated

Financial

Collateral

Liabilities

Liabilities

Balance Sheet

Balance Sheet

Instruments

Posted

Net Amount

Repurchase agreements

$

995,000

$

-300,000

$

695,000

$

-350,000

-1

$

-345,000

-3

$

—

($ in thousands)

As of December 31, 2014

Net Amounts of

Gross Amounts Not Offset on the

Gross Amounts

Assets Presented

Consolidated Balance Sheet

Gross Amounts

Offset on the

on the

of Recognized

Consolidated

Consolidated

Financial

Collateral

Assets

Assets

Balance Sheet

Balance Sheet

Instruments

Received

Net Amount

Resale agreements

$

1,425,000

$

-200,000

$

1,225,000

$

-425,000

$

-797,172

$

2,828

-1

-2

Net Amounts of

Gross Amounts Not Offset on the

Liabilities

Consolidated Balance Sheet

Gross Amounts

Presented

Gross Amounts

Offset on the

on the

of Recognized

Consolidated

Consolidated

Financial

Collateral

Liabilities

Liabilities

Balance Sheet

Balance Sheet

Instruments

Posted

Net Amount

Repurchase agreements

$

995,000

$

-200,000

$

795,000

$

-425,000

-1

$

-370,000

-3

$

—

-1

Includes financial instruments subject to enforceable master netting arrangements that are not permitted to be offset under ASC 210-20-45 but would be eligible for offsetting to the extent an event of default has occurred.

-2

Represents the fair value of securities the Company has received under resale agreements, limited for table presentation purposes to the amount of the recognized asset due from each counterparty.

-3

Represents the fair value of securities the Company has pledged under repurchase agreements, limited for table presentation purposes to the amount of the recognized liability owed to each counterparty.

AVAILABLEFORSALE_INVESTMENT_SE

AVAILABLE-FOR-SALE INVESTMENT SECURITIES	3 Months Ended
	Mar. 31, 2015
AVAILABLE-FOR-SALE INVESTMENT SECURITIES
AVAILABLE-FOR-SALE INVESTMENT SECURITIES
	NOTE 7 —AVAILABLE-FOR-SALE INVESTMENT SECURITIES
	The following tables present the amortized cost, gross unrealized gains, gross unrealized losses and fair value by major categories of available-for-sale investment securities:
	($ in thousands)		Amortized		Gross			Gross		Fair
			Cost		Unrealized			Unrealized		Value
					Gains			Losses
	March 31, 2015
	Available-for-sale investment securities:
	U.S. Treasury securities		$	1,162,801	$	9,586		$	-161	$	1,172,226
	U.S. government agency and U.S. government sponsored enterprise debt securities		411,275		1,143			-452		411,966
	U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities:
	Commercial mortgage-backed securities		94,330		1,242			-337		95,235
	Residential mortgage-backed securities		717,693		11,274			-1,611		727,356
	Municipal securities		187,244		4,800			-798		191,246
	Other residential mortgage-backed securities:
	Investment grade (1)		50,297		1,310			-106		51,501
	Corporate debt securities:
	Investment grade (1)		141,140		—			-739		140,401
	Non-investment grade (1)		11,524		—			-2,023		9,501
	Other securities		41,543		436			-326		41,653
	Total available-for-sale investment securities		$	2,817,847	$	29,791		$	-6,553	$	2,841,085
	December 31, 2014
	Available-for-sale investment securities:
	U.S. Treasury securities		$	873,101	$	1,971		$	-1,637	$	873,435
	U.S. government agency and U.S. government sponsored enterprise debt securities		311,927		490			-1,393		311,024
	U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities:
	Commercial mortgage-backed securities		140,957		1,056			-593		141,420
	Residential mortgage-backed securities		785,412		9,754			-4,078		791,088
	Municipal securities		245,408		6,202			-1,162		250,448
	Other residential mortgage-backed securities:
	Investment grade (1)		52,694		1,359			-135		53,918
	Other commercial mortgage-backed securities:
	Investment grade (1)		34,000		53			—		34,053
	Corporate debt securities:
	Investment grade (1)		116,236		—			-1,054		115,182
	Non-investment grade (1)		17,881		—			-3,200		14,681
	Other securities		41,589		243			-716		41,116
	Total available-for-sale investment securities		$	2,619,205	$	21,128		$	-13,968	$	2,626,365
		-1		Available-for-sale investment securities rated BBB- or higher by S&P or Baa3 or higher by Moody’s are considered investment grade. Conversely, available-for-sale investment securities rated lower than BBB- by S&P or lower than Baa3 by Moody’s are considered non-investment grade.
	Realized Gains and Losses
	The following table presents the proceeds, gross realized gains, and gross realized losses related to the sales of available-for-sale investment securities for the three months ended March 31, 2015 and 2014:
	Three Months Ended
	March 31,
	($ in thousands)		2015		2014
	Proceeds from sales		$	180,501	$	330,231
	Gross realized gains		$	4,404	$	3,545
	Gross realized losses		$	—	$	127	-1
	Related tax expense		$	1,850	$	1,436
		-1		The gross $127 thousand of losses resulted from the available-for-sale investment securities acquired from MetroCorp which were sold immediately after the acquisition closed.
	Declines in the fair value of securities below their cost that are deemed to be an other-than-temporary impairment (“OTTI”) are recognized in earnings to the extent the impairment is related to credit losses. The following table presents a rollforward of the amounts related to the OTTI credit losses recognized in earnings for the three months ended March 31, 2015 and 2014:
			Three Months Ended
			March 31,
	($ in thousands)		2015		2014
	Beginning balance		$	112,338	$	115,511
	Addition of OTTI that was not previously recognized		—		—
	Additional increases to the amount related to the credit loss for which an OTTI was previously recognized		—		—
	Reduction for securities sold		-5,650		—
	Ending balance		$	106,688	$	115,511
	The Company believes that it is not more likely than not that the Company will be required to sell the securities above before recovery of their amortized cost basis. No OTTI credit losses were recognized for the three months ended March 31, 2015 and 2014. For the three months ended March 31, 2015, the Company realized a gain of $960 thousand from the sale of a non-investment grade corporate debt security with previously recognized OTTI credit losses of $5.7 million. There were no sale transactions related to non-investment grade investment securities with previously recognized OTTI credit losses for the three months ended March 31, 2014.
	Unrealized Losses
	The following tables present the Company’s investment portfolio’s gross unrealized losses and related fair values, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, as of March 31, 2015 and December 31, 2014:
			Less Than 12 Months					12 Months or More				Total
	($ in thousands)		Fair		Unrealized			Fair		Unrealized		Fair		Unrealized
			Value		Losses			Value		Losses		Value		Losses
March 31, 2015
Available-for-sale investment securities:
U.S. Treasury securities		$	61,684	$	-37		$	50,860	$	-124	$	112,544	$	-161
U.S. government agency and U.S. government sponsored enterprise debt securities		144,114		-383			24,927		-69		169,041		-452
U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities:
Commercial mortgage-backed securities		14,119		-141			13,541		-196		27,660		-337
Residential mortgage-backed securities		40,969		-97			103,488		-1,514		144,457		-1,611
Municipal securities		26,905		-335			15,783		-463		42,688		-798
Other residential mortgage-backed securities:
Investment grade		—		—			6,985		-106		6,985		-106
Corporate debt securities:
Investment grade		—		—			90,401		-739		90,401		-739
Non-investment grade		—		—			9,501		-2,023		9,501		-2,023
Other securities		8,674		-326			—		—		8,674		-326
Total available-for-sale investment securities		$	296,465	$	-1,319		$	315,486	$	-5,234	$	611,951	$	-6,553
		Less Than 12 Months					12 Months or More				Total
($ in thousands)		Fair		Unrealized			Fair		Unrealized		Fair		Unrealized
		Value		Losses			Value		Losses		Value		Losses
December 31, 2014
Available-for-sale investment securities:
U.S. Treasury securities		$	170,260	$	-266		$	163,800	$	-1,371	$	334,060	$	-1,637
U.S. government agency and U.S. government sponsored enterprise debt securities		69,438		-504			124,104		-889		193,542		-1,393
U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities:
Commercial mortgage-backed securities		45,405		-257			16,169		-336		61,574		-593
Residential mortgage-backed securities		81,927		-270			241,047		-3,808		322,974		-4,078
Municipal securities		6,391		-26			61,107		-1,136		67,498		-1,162
Other residential mortgage-backed securities:
Investment grade		—		—			7,217		-135		7,217		-135
Corporate debt securities:
Investment grade		25,084		-12			90,098		-1,042		115,182		-1,054
Non-investment grade		—		—			14,681		-3,200		14,681		-3,200
Other securities		15,885		-716			—		—		15,885		-716
Total available-for-sale investment securities		$	414,390	$	-2,051		$	718,223	$	-11,917	$	1,132,613	$	-13,968
At each reporting date, the Company examines all individual securities that are in an unrealized loss position for OTTI.  Specific investment related factors, such as the nature of the investments, the severity and duration of the loss, the probability of collecting all amounts due, the analysis of the issuers of the securities and whether there has been any cause for default on the securities and any change in the rating of the securities by various rating agencies, are examined to assess impairment. Additionally, the Company evaluates whether the creditworthiness of the issuer calls the realization of contractual cash flows into question. The Company takes into consideration the financial resources, intent and its overall ability to hold the securities and not be required to sell them until their fair values recover.
The majority of the total unrealized losses related to securities are related to non-investment grade corporate debt securities, residential agency mortgage-backed securities, and municipal securities. As of March 31, 2015, non-investment grade corporate debt securities, residential agency mortgage-backed securities, and municipal securities represented less than 1%, 26%, and 7%, respectively, of the total available-for-sale investment securities portfolio. As of December 31, 2014, non-investment grade corporate debt securities, residential agency mortgage-backed securities, and municipal securities represented 1%, 30%, and 10%, respectively, of the total available-for-sale investment securities portfolio. The unrealized losses on these securities were primarily attributed to yield curve movement, together with the widened liquidity spread and credit spread. The issuers of these securities have not, to the Company’s knowledge, established any cause for default on these securities. These securities have fluctuated in value since their purchase dates as market interest rates have fluctuated.
Management believes the impairments detailed in the tables of gross unrealized losses above are temporary and are not impaired due to reasons of credit quality. Accordingly, no impairment loss has been recorded in the Company’s consolidated statements of income for the three months ended March 31, 2015 and 2014.
Available-for-Sale Investment Securities Maturities
The following table presents the scheduled maturities of available-for-sale investment securities as of March 31, 2015:
($ in thousands)		Amortized Cost		Fair Value
Due within one year		$	435,764	$	434,493
Due after one year through five years		1,275,954		1,289,312
Due after five years through ten years		311,367		311,157
Due after ten years		794,762		806,123
Total available-for-sale investment securities		$	2,817,847	$	2,841,085
Actual maturities of mortgage-backed securities can differ from contractual maturities because borrowers have the right to prepay obligations. In addition, such factors as prepayments and interest rates may affect the yields on the carrying values of mortgage-backed securities.
Available-for-sale investment securities with a par value of $1.88 billion and $1.93 billion were pledged to secure public deposits, FHLB advances, repurchase agreements, the Federal Reserve Bank’s discount window, or for other purposes required or permitted by law as of March 31, 2015 and December 31, 2014, respectively.

DERIVATIVE_FINANCIAL_INSTRUMEN

DERIVATIVE FINANCIAL INSTRUMENTS	3 Months Ended
	Mar. 31, 2015
DERIVATIVE FINANCIAL INSTRUMENTS
DERIVATIVE FINANCIAL INSTRUMENTS
	NOTE 8 —   DERIVATIVE FINANCIAL INSTRUMENTS
	The following table presents the total notional and fair values of the Company’s derivatives as of March 31, 2015 and December 31, 2014:
			Fair Values of Derivative Instruments
			March 31, 2015								December 31, 2014
						Fair Value								Fair Value
	($ in thousands)		Notional			Derivative			Derivative		Notional			Derivative			Derivative
			Amount			Assets (1)			Liabilities (1)		Amount			Assets (1)			Liabilities (1)
	Derivatives designated as hedging instruments:
	Interest rate swaps on certificates of deposit		$	129,096		$	—		$	6,370	$	132,667		$	—		$	9,922
	Total derivatives designated as hedging instruments		$	129,096		$	—		$	6,370	$	132,667		$	—		$	9,922
	Derivatives not designated as hedging instruments:
	Foreign exchange options		$	50,000		$	3,683		$	—	$	85,614		$	6,136		$	—
	Embedded derivative liabilities		47,794			—			3,412		47,838			—			3,392
	Interest rate swaps and caps		5,204,760			66,060			66,914		4,858,391			41,534			41,779
	Foreign exchange contracts		1,037,967			13,340			13,080		680,629			8,123			9,171
	Total derivatives not designated as hedging instruments		$	6,340,521		$	83,083		$	83,406	$	5,672,472		$	55,793		$	54,342
		-1		Derivative assets are included in Other Assets. Derivative liabilities are included in Accrued Expenses and Other liabilities, and Deposits.
	Derivatives Designated as Hedging Instruments
	Interest Rate Swaps on Certificates of Deposits — The Company is exposed to changes in the fair value of certain fixed rate certificates of deposits due to changes in the benchmark interest rate, London Interbank Offering Rate (“LIBOR”). Interest rate swaps designated as fair value hedges involve the receipt of fixed rate amounts from a counterparty in exchange for the Company making variable-rate payments over the life of the agreements without the exchange of the underlying notional amount. The interest rate swaps and the related certificates of deposits have the same maturity dates.
	In the first quarter of 2015, the Company terminated $3.6 million of interest rate swaps on certificates of deposits, as a result of certificate of deposit repurchases. As of March 31, 2015 and December 31, 2014, the total notional amounts of interest rate swaps on certificates of deposits were $129.1 million and $132.7 million, respectively. The fair value liabilities of the interest rate swaps were $6.4 million and $9.9 million as of March 31, 2015 and December 31, 2014, respectively.
	The following table presents the net gains (losses) recognized in the consolidated statements of income for the three months ended March 31, 2015 and 2014:
			Three Months Ended
			March 31,
	($ in thousands)		2015			2014
	Gains (losses) recorded in interest expense
	Recognized on interest rate swaps		$	3,048		$	2,704
	Recognized on certificates of deposits		-2,695			(2,937		)
	Net amount recognized on fair value hedges (ineffective portion)		$	353		$	(233	)
	Reduction in interest expense recognized on interest rate swaps		$	920		$	1,824
	Derivatives Not Designated as Hedging Instruments
	Foreign Exchange Options — During 2010, the Company entered into foreign exchange option contracts with major brokerage firms to economically hedge against foreign exchange fluctuations in certain certificates of deposits available to its customers. These certificates of deposits have a term of 5 years and pay interest based on the performance of the RMB relative to the USD. Under ASC 815, a certificate of deposit that pays interest based on changes in foreign exchange rates is a hybrid instrument with an embedded derivative that must be accounted for separately from the host contract (i.e., the certificate of deposit). In accordance with ASC 815, both the embedded derivative instruments and the freestanding foreign exchange option contracts are recorded at fair value.
	As of March 31, 2015 and December 31, 2014, the notional amounts of the foreign exchange options were $50.0 million and $85.6 million, respectively. As of both March 31, 2015 and December 31, 2014, the notional amounts of the embedded derivative liabilities were $47.8 million.  The fair values of the foreign exchange options and the embedded derivative liabilities amounted to a $3.7 million asset and a $3.4 million liability, respectively, as of March 31, 2015. The fair values of the foreign exchange options and embedded derivative liabilities amounted to a $6.1 million asset and a $3.4 million liability, respectively, as of December 31, 2014.
	Interest Rate Swaps and Caps — The Company enters into interest rate derivatives including interest rate swaps and caps with its customers to allow them to hedge against the risk of rising interest rates on their variable rate loans. To economically hedge against the interest rate risks in the products offered to its customers, the Company enters into mirror interest rate contracts with institutional counterparties.  As of March 31, 2015, the total notional amounts of interest rate swaps and caps, including mirror transactions with institutional counterparties and the Company’s customers totaled $2.60 billion each for derivatives that were in an asset and a liability valuation position. As of December 31, 2014, the total notional amounts of interest rate swaps and caps, including mirror transactions with institutional counterparties and the Company’s customers totaled $2.45 billion for derivatives that were in an asset valuation position and $2.40 billion for derivatives that were in a liability valuation position.
	The fair values of interest rate swap and cap contracts with institutional counterparties and the Company’s customers amounted to a $66.1 million asset and a $66.9 million liability as of March 31, 2015. The fair values of interest rate swap and cap contracts with institutional counterparties and the Company’s customers amounted to a $41.5 million asset and a $41.8 million liability as of December 31, 2014.
	Foreign Exchange Contracts — The Company enters into short-term foreign exchange forward contracts on a regular basis to economically hedge against foreign exchange rate fluctuations. As of March 31, 2015 and December 31, 2014, the notional amounts of short-term foreign exchange contracts were $1.04 billion and $680.6 million, respectively.  The fair values of the short-term foreign exchange contracts recorded were a $13.3 million asset and a $13.1 million liability as of March 31, 2015. The fair values of short-term foreign exchange contracts recorded were an $8.1 million asset and a $9.2 million liability as of December 31, 2014.
	The following table presents the net gains (losses) recognized on the Company’s consolidated statements of income related to derivatives not designated as hedging instruments:
			Location in		Three Months Ended March 31,
			Consolidated
	($ in thousands)		Statements of Income		2015			2014
	Derivatives not designated as hedging instruments:
	Foreign exchange options		Foreign exchange income		$	199		$	(119	)
	Foreign exchange options with embedded derivatives		Other operating expense		-141			1
	Interest rate swaps and caps		Other operating income		-594			(936		)
	Foreign exchange contracts		Foreign exchange income		1,308			(2,129		)
	Total net gains (losses)				$	772		$	(3,183	)
	Credit-Risk-Related Contingent Features  — Certain over-the-counter (“OTC”) derivative contracts of the Company contain early termination provisions that may require the Company to settle any outstanding balances upon the occurrence of a specified credit-risk-related event. These events, which are defined by the existing derivative contracts, primarily relate to downgrades in the credit rating of East West Bank to below investment grade. In the event that East West Bank’s credit rating is downgraded to below investment grade, no additional collateral would be required to be posted since the liabilities related to such contracts were fully collateralized as of March 31, 2015 and December 31, 2014.
	Offsetting of Derivatives
	The Company has entered into agreements with counterparty financial institutions, which include master netting agreements.  However, the Company has elected to account for all derivatives with counterparty institutions on a gross basis. The following tables present gross derivatives in the consolidated balance sheets and the respective collaterals received or pledged in the form of other financial instruments, which are generally marketable securities and/or cash. The collateral amounts in these tables are limited to the outstanding balances of the related asset or liability (after netting is applied); thus instances of overcollateralization are not shown:
	($ in thousands)		As of March 31, 2015
						Gross Amounts			Net Amounts of		Gross Amounts Not Offset on the
									Assets Presented		Consolidated Balance Sheet
	Assets		Gross Amounts			Offset on the			on the		Financial			Collateral			Net Amount
			of Recognized			Consolidated			Consolidated		Instruments			Received
			Assets			Balance Sheet			Balance Sheet
	Derivatives		$	13,564		$	—		$	13,564	$	-6,002	(1)	$	-6,480	(2)	$	1,082
									Net Amounts of		Gross Amounts Not Offset on the
									Liabilities		Consolidated Balance Sheet
	Liabilities		Gross Amounts			Gross Amounts			Presented		Financial			Collateral Posted			Net Amount
			of Recognized			Offset on the			on the		Instruments
			Liabilities			Consolidated			Consolidated
						Balance Sheet			Balance Sheet
	Derivatives		$	79,890		$	—		$	79,890	$	-6,002	(1)	$	-72,018	(3)	$	1,870
	($ in thousands)		As of December 31, 2014
					Gross Amounts			Net Amounts of		Gross Amounts Not Offset on the
								Assets Presented		Consolidated Balance Sheet
Assets		Gross Amounts			Offset on the			on the		Financial			Collateral			Net Amount
		of Recognized			Consolidated			Consolidated		Instruments			Received
		Assets			Balance Sheet			Balance Sheet
Derivatives		$	12,396		$	—		$	12,396	$	-5,725	(1)	$	-3,463	(2)	$	3,208
								Net Amounts of		Gross Amounts Not Offset on the
								Liabilities		Consolidated Balance Sheet
Liabilities		Gross Amounts			Gross Amounts			Presented		Financial			Collateral Posted			Net Amount
		of Recognized			Offset on the			on the		Instruments
		Liabilities			Consolidated			Consolidated
					Balance Sheet			Balance Sheet
Derivatives		$	56,505		$	—		$	56,505	$	-5,725	(1)	$	-49,951	(3)	$	829
	-1		Represents the netting of derivative receivable and payable balance for the same counterparty under enforceable master netting arrangements if the Company has elected to net.
	-2		Represents $6.5 million and $3.5 million of cash collateral received against derivative assets with the same counterparty that are subject to enforceable master netting arrangements as of March 31, 2015 and December 31, 2014, respectively.
	-3		Represents cash and securities pledged against derivative liabilities with the same counterparty that are subject to enforceable master netting arrangements. Includes approximately $19.0 million and $12.8 million of cash collateral posted as of March 31, 2015 and December 31, 2014, respectively.
Refer to Note 4 for fair value measurement disclosures on derivatives.

LOANS_RECEIVABLE_AND_ALLOWANCE

LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES	3 Months Ended
	Mar. 31, 2015
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
	NOTE 9 — LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
	The Company’s loan portfolio includes originated and purchased loans. Originated and purchased loans, for which there was no evidence of credit deterioration at their acquisition date, are referred to collectively as Non-PCI loans. PCI loans are accounted for in accordance with ASC Subtopic 310-30, Loans and Debt Securities Acquired with Deteriorated Credit Quality. A purchased loan is deemed to be credit impaired when there is evidence of credit deterioration since its origination and it is probable at the acquisition date that the Company would be unable to collect all contractually required payments. PCI loans consist of loans acquired with deteriorated quality from the United Commercial Bank (“UCB”) FDIC assisted acquisition on November 6, 2009, the Washington First International Bank (“WFIB”) FDIC assisted acquisition on June 11, 2010 and, to a lesser extent, a small portion of loans acquired from the MetroCorp acquisition on January 17, 2014. Refer to Note 3 — Business Combination, included in this report, for further details on the MetroCorp acquisition and Note 8 — Covered Assets and FDIC Indemnification Asset of the Company’s 2014 Form 10-K for additional details related to the WFIB and UCB acquisitions.
	The following table presents the composition of the Company’s non-PCI and PCI loans as of March 31, 2015 and December 31, 2014:
			March 31, 2015									December 31, 2014
	($ in thousands)		Non-PCI Loans			PCI Loans (1)			Total (1)			Non-PCI Loans			PCI Loans (1)			Total (1)
	CRE:
	Income Producing		$	5,802,931		$	652,246		$	6,455,177		$	5,568,046		$	688,013		$	6,256,059
	Construction		358,118			9,342			367,460			319,843			12,444			332,287
	Land		209,992			12,792			222,784			214,327			16,840			231,167
	Total CRE		6,371,041			674,380			7,045,421			6,102,216			717,297			6,819,513
	C&I:
	Commercial business		6,799,149			72,301			6,871,450			7,097,853			83,336			7,181,189
	Trade finance		844,090			5,224			849,314			889,728			6,284			896,012
	Total C&I		7,643,239			77,525			7,720,764			7,987,581			89,620			8,077,201
	Residential:
	Single-family		3,298,775			214,019			3,512,794			3,647,262			219,519			3,866,781
	Multifamily		1,240,359			244,066			1,484,425			1,184,017			265,891			1,449,908
	Total residential		4,539,134			458,085			4,997,219			4,831,279			485,410			5,316,689
	Consumer		1,584,168			27,996			1,612,164			1,483,956			29,786			1,513,742
	Total loans		$	20,137,582		$	1,237,986		$	21,375,568		$	20,405,032		$	1,322,113		$	21,727,145
	Unearned fees, premiums, and discounts, net		-899			—			-899			2,804			—			2,804
	Allowance for loan losses		-257,095			-643			-257,738			-260,965			-714			-261,679
	Loans, net		$	19,879,588		$	1,237,343		$	21,116,931		$	20,146,871		$	1,321,399		$	21,468,270
		-1		Loans net of ASC 310-30 discount.
	The Company’s CRE lending activities include loans to finance income-producing properties, construction and land loans. The Company’s C&I lending activities include commercial business financing for small and middle-market businesses in a wide spectrum of industries. Included in commercial business loans are loans for working capital, accounts receivable lines, inventory lines, Small Business Administration loans and lease financing. The Company also offers a variety of international trade finance services and products, including letters of credit, revolving lines of credit, import loans, bankers’ acceptances, working capital lines, domestic purchase financing and pre-export financing.
	The Company’s residential single-family loans are primarily comprised of adjustable rate (“ARM”) first mortgage loans secured by one-to-four unit residential properties. The Company’s ARM residential single-family loan programs generally have a one-year or three-year initial fixed period. The Company’s residential multifamily loans are primarily comprised of variable rate loans that have a six-month or three-year initial fixed period. As of March 31, 2015 and December 31, 2014, consumer loans were primarily composed of home equity lines of credit (“HELOCs”).
	All loans originated are subject to the Company’s underwriting guidelines and loan origination standards. Management believes that the Company’s underwriting criteria and procedures adequately consider the unique risks which may come from these products. The Company conducts a variety of quality control procedures and periodic audits, including review of criteria for lending and legal requirements, to ensure it is in compliance with its origination standards.
	As of March 31, 2015 and December 31, 2014, loans totaling $14.79 billion and $14.66 billion, respectively, were pledged to secure borrowings and to provide additional borrowing capacity from the FHLB and the Federal Reserve Bank.
	Credit Quality Indicators
	All loans are subject to the Company’s internal and external credit review and monitoring. Loans are risk rated based on analysis of the current state of the borrower’s credit quality. The analysis of credit quality includes a review of all repayment sources, the borrower’s current payment performance/delinquency, current financial and liquidity status and all other relevant information.  For residential single-family loans, payment performance/delinquency is the driving indicator for the risk ratings.  However, the risk ratings remain the overall credit quality indicator for the Company as well as the credit quality indicator utilized for estimating the appropriate allowance for loan losses. The Company utilizes an eight grade risk rating system, where a higher grade represents a higher level of credit risk. The eight grade risk rating system can be generally classified by the following categories: Pass, Watch, Special Mention, Substandard, Doubtful and Loss. The risk ratings reflect the relative strength of the repayment sources.
	Pass and Watch loans are generally considered to have sufficient sources of repayment in order to repay the loan in full in accordance with all terms and conditions. These borrowers may have some credit risks that require monitoring, but full repayments are expected. Special Mention loans are considered to have potential weaknesses that warrant closer attention by management. Special Mention is considered a transitory grade. If any potential weaknesses are resolved, the loan is upgraded to a Pass or Watch grade. If negative trends in the borrower’s financial status or other information indicates that the repayment sources may become inadequate, the loan is downgraded to a Substandard grade. Substandard loans are considered to have well-defined weaknesses that jeopardize the full and timely repayment of the loan. Substandard loans have a distinct possibility of loss if the deficiencies are not corrected. Additionally, when management has assessed a potential for loss but a distinct possibility of loss is not recognizable, the loan is still classified as Substandard. Doubtful loans have insufficient sources of repayment and a high probability of loss. Loss loans are considered to be uncollectible and of such little value that they are no longer considered bankable assets. These internal risk ratings are reviewed routinely and adjusted due to changes in the borrowers’ status and likelihood of loan repayment.
	The following tables present the credit risk rating for non-PCI loans by portfolio segment as of March 31, 2015 and December 31, 2014:
	($ in thousands)		Pass/Watch			Special			Substandard			Doubtful			Loss			Total Non-PCI
						Mention												Loans
	March 31, 2015
	CRE:
	Income producing		$	5,488,698		$	56,245		$	257,988		$	—		$	—		$	5,802,931
	Construction		353,799			703			3,616			—			—			358,118
	Land		187,364			5,701			16,927			—			—			209,992
	C&I:
	Commercial business		6,573,081			93,302			132,286			426			54			6,799,149
	Trade finance		788,864			19,726			35,500			—			—			844,090
	Residential:
	Single-family		3,277,085			3,595			18,095			—			—			3,298,775
	Multifamily		1,162,798			4,906			72,655			—			—			1,240,359
	Consumer		1,581,116			336			2,716			—			—			1,584,168
	Total		$	19,412,805		$	184,514		$	539,783		$	426		$	54		$	20,137,582
	($ in thousands)		Pass/Watch			Special			Substandard			Doubtful			Loss			Total Non-PCI
						Mention												Loans
	December 31, 2014
	CRE:
	Income producing		$	5,243,640		$	54,673		$	269,733		$	—		$	—		$	5,568,046
	Construction		310,259			11			9,573			—			—			319,843
	Land		185,220			5,701			23,406			—			—			214,327
	C&I:
	Commercial business		6,836,914			130,319			130,032			533			55			7,097,853
	Trade finance		845,889			13,031			30,808			—			—			889,728
	Residential:
	Single-family		3,627,491			3,143			16,628			—			—			3,647,262
	Multifamily		1,095,982			5,124			82,911			—			—			1,184,017
	Consumer		1,480,208			1,005			2,743			—			—			1,483,956
	Total		$	19,625,603		$	213,007		$	565,834		$	533		$	55		$	20,405,032
	The following tables present the credit risk rating for PCI loans by portfolio segment as of March 31, 2015 and December 31, 2014:
($ in thousands)		Pass/Watch			Special			Substandard			Doubtful			Total PCI Loans
					Mention
March 31, 2015
CRE:
Income producing		$	517,827		$	6,164		$	128,255		$	—		$	652,246
Construction		585			1,739			7,018			—			9,342
Land		5,080			5,433			2,279			—			12,792
C&I:
Commercial business		62,858			997			8,446			—			72,301
Trade finance		3,535			—			1,689			—			5,224
Residential:
Single-family		208,238			745			5,036			—			214,019
Multifamily		211,060			—			33,006			—			244,066
Consumer		27,330			115			551			—			27,996
Total (1)		$	1,036,513		$	15,193		$	186,280		$	—		$	1,237,986
	-1		Loans net of ASC 310-30 discount.
($ in thousands)		Pass/Watch			Special			Substandard			Doubtful			Total PCI Loans
					Mention
December 31, 2014
CRE:
Income producing		$	534,015		$	9,960		$	144,038		$	—		$	688,013
Construction		589			1,744			10,111			—			12,444
Land		7,012			5,391			4,437			—			16,840
C&I:
Commercial business		70,586			1,103			11,647			—			83,336
Trade finance		4,620			—			1,664			—			6,284
Residential:
Single-family		213,829			374			5,316			—			219,519
Multifamily		230,049			—			35,842			—			265,891
Consumer		29,026			116			644			—			29,786
Total (1)		$	1,089,726		$	18,688		$	213,699		$	—		$	1,322,113
	-1		Loans net of ASC 310-30 discount.
Nonaccrual and Past Due Loans
The following tables present the aging analysis on non-PCI loans as of March 31, 2015 and December 31, 2014:
($ in thousands)		Accruing			Accruing			Total			Nonaccrual			Nonaccrual			Total			Current			Total Non-PCI
		Loans			Loans			Accruing			Loans Less			Loans			Nonaccrual			Accruing			Loans
		30-59 Days			60-89 Days			Past Due			Than 90 Days			90 or More			Loans			Loans
		Past Due			Past Due			Loans			Past Due			Days Past Due
March 31, 2015
CRE:
Income producing		$	9,699		$	1,860		$	11,559		$	18,739		$	11,011		$	29,750		$	5,761,622		$	5,802,931
Construction		—			—			—			14			917			931			357,187			358,118
Land		—			—			—			214			2,386			2,600			207,392			209,992
C&I:
Commercial business		11,227			902			12,129			5,988			25,436			31,424			6,755,596			6,799,149
Trade finance		—			600			600			37			—			37			843,453			844,090
Residential:
Single-family		7,239			2,402			9,641			4,731			4,406			9,137			3,279,997			3,298,775
Multifamily		2,611			376			2,987			12,216			1,145			13,361			1,224,011			1,240,359
Consumer		883			2			885			166			374			540			1,582,743			1,584,168
Total		$	31,659		$	6,142		$	37,801		$	42,105		$	45,675		$	87,780		$	20,012,001		$	20,137,582
Unearned fees, premiums and discounts, net																							-899
Total recorded investment in non-PCI loans																							$	20,136,683
($ in thousands)		Accruing			Accruing			Total			Nonaccrual			Nonaccrual			Total			Current			Total Non-PCI
		Loans			Loans			Accruing			Loans Less			Loans			Nonaccrual			Accruing			Loans
		30-59 Days			60-89 Days			Past Due			Than 90 Days			90 or More			Loans			Loans
		Past Due			Past Due			Loans			Past Due			Days Past Due
December 31, 2014
CRE:
Income producing		$	14,171		$	3,593		$	17,764		$	19,348		$	9,165		$	28,513		$	5,521,769		$	5,568,046
Construction		—			—			—			15			6,898			6,913			312,930			319,843
Land		—			—			—			221			2,502			2,723			211,604			214,327
C&I:
Commercial business		3,187			4,361			7,548			6,623			21,813			28,436			7,061,869			7,097,853
Trade finance		—			—			—			73			292			365			889,363			889,728
Residential:
Single-family		6,381			1,294			7,675			2,861			5,764			8,625			3,630,962			3,647,262
Multifamily		4,425			507			4,932			12,460			8,359			20,819			1,158,266			1,184,017
Consumer		2,154			162			2,316			169			3,699			3,868			1,477,772			1,483,956
Total		$	30,318		$	9,917		$	40,235		$	41,770		$	58,492		$	100,262		$	20,264,535		$	20,405,032
Unearned fees, premiums and discounts, net																							2,804
Total recorded investment in non-PCI loans																							$	20,407,836
Non-PCI loans that are 90 or more days past due are generally placed on nonaccrual status, at which point interest accrual is discontinued and all unpaid accrued interest is reversed against interest income. Additionally, non-PCI loans that are not 90 or more days past due but have identified deficiencies are also placed on nonaccrual status. Interest payments received on nonaccrual loans are reflected as a reduction of principal and not as interest income. A loan is returned to accrual status when the borrower has demonstrated a satisfactory payment trend subject to management’s assessment of the borrower’s ability to repay the loan.
PCI loans are excluded from the above aging analysis table as such loans continue to earn interest from accretable yield, independent of performance in accordance with their contractual terms. $53.4 million and $63.4 million of PCI loans were on nonaccrual status as of March 31, 2015 and December 31, 2014, respectively.
Loans in Process of Foreclosure
As of March 31, 2015 and December 31, 2014, the Company had $16.7 million and $16.9 million, respectively, of recorded investment of consumer mortgage loans secured by residential real estate properties, for which formal foreclosure proceedings were in process according to local requirements of the applicable jurisdiction, which were not included in OREO. Foreclosed residential real estate properties with carrying amount of $4.1 million were included in total net OREO of $32.7 million as of March 31, 2015. In comparison, foreclosed residential real estate properties with carrying amount of $3.5 million were included in total net OREO of $32.1 million as of December 31, 2014.
Troubled Debt Restructurings
A troubled debt restructuring (“TDR”) is a modification of the terms of a loan when the lender, for economic or legal reasons related to the borrower’s financial difficulties, grants a concession to the borrower. The concessions may be granted in various forms, including a below-market change in the stated interest rate, reduction in the loan balance or accrued interest, extension of the maturity date with a stated interest rate lower than the current market rate or note splits referred to as A/B notes. In A/B note restructurings, the original note is bifurcated into two notes where the A note represents the portion of the original loan which allows for acceptable loan-to-value and debt coverage on the collateral and is expected to be collected in full and the B note represents the portion of the original loan where there is a shortfall in value and is fully charged off. The A/B note balance is comprised of the A note balance only. A notes are not disclosed as TDRs in subsequent years after the year of restructuring if the restructuring agreement specifies an interest rate equal to or greater than the rate that the Company was willing to accept at the time of the restructuring for a new loan with comparable risk, the loan is not impaired based on the terms specified by the restructuring agreement and has demonstrated a period of sustained performance under the modified terms. The Company had $2.3 million and $2.9 million of performing A/B notes as of March 31, 2015 and December 31, 2014, respectively.
Potential TDRs are individually evaluated and the type of restructuring is selected based on the loan type and the circumstances of the borrower’s financial difficulty in order to maximize the Company’s recovery. During the three months ended March 31, 2015, the Company restructured $833 thousand of CRE loans through principal and interest deferments, $164 thousand of C&I loans through principal deferments and $281 thousand of residential loans through principal deferments. During the three months ended March 31, 2014, the Company restructured $1.7 million of C&I loans through extensions, principal deferments, and other modified terms and $5.8 million of residential loans through extensions, rate reductions, principal deferments and other modified terms.
The following table presents the additions to non-PCI troubled debt restructurings during the three months ended March 31, 2015 and 2014:
		Loans Modified as TDRs During the Three Months Ended March 31,
		2015											2014
($ in thousands)		Number		Pre-Modification			Post-Modification			Financial			Number		Pre-Modification			Post-Modification			Financial
		of		Outstanding			Outstanding			Impact (2)			of		Outstanding			Outstanding			Impact (2)
		Contracts		Recorded			Recorded						Contracts		Recorded			Recorded
				Investment			Investment (1)								Investment			Investment (1)
CRE:
Income producing		1		$	828		$	833		$	—		—		$	—		$	—		$	—
C&I:
Commercial business		1		$	167		$	164		$	-32		5		$	1,721		$	1,691		$	1,248
Residential:
Single-family		1		$	281		$	281		$	-2		3		$	5,823		$	5,804		$	—
	-1		Includes subsequent payments after modification and reflects the balance as of March 31, 2015 and 2014.
	-2		The financial impact includes charge-offs and specific reserves recorded at modification date.
Subsequent to restructuring, a TDR that becomes delinquent, generally beyond 90 days, is considered to have defaulted. There were no subsequent defaults during the three months ended March 31, 2015 for non-PCI loans that were modified as TDRs within the previous 12 months. Non-PCI loans that were modified as TDRs within the previous 12 months that have subsequently defaulted during the three months ended March 31, 2014 consisted of one CRE TDR contract with a recorded investment of $2.7 million and one C&I TDR contract with a recorded investment of $570 thousand.
TDRs may be designated as performing or nonperforming. A TDR may be designated as performing if the loan has demonstrated sustained performance under the modified terms. The period of sustained performance may include the periods prior to modification if prior performance has met or exceeded the modified terms. A loan will remain on nonaccrual status until the borrower demonstrates a sustained period of performance, generally six consecutive months of payments.
TDRs are included in the impaired loan quarterly valuation allowance process. See Allowance for Loan Losses and Impaired Loans sections below for complete discussion. All portfolio segments of TDRs are reviewed for necessary specific reserves in the same manner as impaired loans of the same portfolio segment which have not been identified as TDRs. The modification of the terms of each TDR is considered in the current impairment analysis of the respective TDR. For all portfolio segments of nonperforming TDRs, when the restructured loan is deemed to be uncollectible under modified terms and its fair value is less than the recorded investment in the loan, the deficiency is charged off against the allowance for loan losses. If the loan is a performing TDR, the deficiency is included in the specific reserves of the allowance for loan losses, as appropriate. The amount of additional funds committed to lend to borrowers whose terms have been modified was immaterial as of March 31, 2015 and December 31, 2014.
Impaired Loans
Impaired loans include non-PCI loans held for investment on nonaccrual status, regardless of the collateral coverage, and all non-PCI TDR loans. A loan is considered impaired when, based on current information and events, it is probable that the Company will be unable to collect all scheduled payments of principal or interest due according to the original contractual terms of the loan agreement. The Company’s loans are grouped into heterogeneous and homogeneous (mostly consumer loans) categories. Classified loans in the heterogeneous category are identified and evaluated for impairment on an individual basis. The Company considers loans individually reviewed to be impaired if, based on current information and events, it is probable the Company will not be able to collect all amounts due according to the original contractual terms of the loan agreement. Impaired loans are measured based on the present value of expected future cash flows discounted at the loan’s effective interest rate or, as an expedient, at the loan’s observable market price or the fair value of the collateral if the loan is collateral dependent, less costs to sell. When the value of an impaired loan is less than the recorded investment in the loan and the loan is classified as nonperforming and uncollectible, the deficiency is charged-off against the allowance for loan losses. Impaired loans exclude the homogenous consumer loan portfolio which is evaluated collectively for impairment.
The following tables present the non-PCI impaired loans as of March 31, 2015 and December 31, 2014:
($ in thousands)		Unpaid			Recorded			Recorded			Total			Related
		Principal			Investment			Investment			Recorded			Allowance
		Balance			With No			With			Investment
					Allowance			Allowance
March 31, 2015
CRE:
Income producing		$	50,389		$	28,186		$	15,001		$	43,187		$	1,399
Construction		916			916			—			916			—
Land		8,234			2,826			543			3,369			175
C&I:
Commercial business		43,289			10,815			28,186			39,001			17,886
Trade finance		223			—			216			216			20
Residential:
Single-family		16,767			7,007			8,404			15,411			413
Multifamily		29,262			20,200			6,594			26,794			279
Consumer		1,258			1,150			108			1,258			1
Total		$	150,338		$	71,100		$	59,052		$	130,152		$	20,173
($ in thousands)		Unpaid			Recorded			Recorded			Total			Related
		Principal			Investment			Investment			Recorded			Allowance
		Balance			With No			With			Investment
					Allowance			Allowance
December 31, 2014
CRE:
Income producing		$	57,805		$	34,399		$	15,646		$	50,045		$	1,581
Construction		6,888			6,888			—			6,888			—
Land		13,291			2,838			5,622			8,460			1,906
C&I:
Commercial business		42,396			10,552			25,717			36,269			15,174
Trade finance		280			—			274			274			28
Residential:
Single-family		17,838			5,137			11,398			16,535			461
Multifamily		37,624			21,500			12,890			34,390			313
Consumer		1,259			1,151			108			1,259			1
Total		$	177,381		$	82,465		$	71,655		$	154,120		$	19,464
The following table presents the average recorded investment and the amount of interest income recognized on non-PCI impaired loans for the three months ended March 31, 2015 and 2014:
		Three Months Ended March 31,
		2015						2014
($ in thousands)		Average			Recognized			Average			Recognized
		Recorded			Interest			Recorded			Interest
		Investment			Income (1)			Investment			Income (1)
CRE:
Income producing		$	44,195		$	141		$	67,153		$	325
Construction		3,902			—			6,888			—
Land		3,438			10			12,227			121
C&I:
Commercial business		39,310			202			43,726			207
Trade finance		245			3			637			4
Residential:
Single-family		15,423			68			17,100			50
Multifamily		26,987			203			36,369			205
Consumer		1,258			12			2,835			1
Total impaired non-PCI loans		$	134,758		$	639		$	186,935		$	913
	-1		Includes interest recognized on accruing non-PCI TDRs. Interest payments received on nonaccrual non-PCI loans are generally reflected as a reduction of principal and not as interest income.
Allowance for Loan Losses
The allowance for loan losses on non-PCI loans consists of specific reserves and a general reserve. The Company’s non-PCI loans fall into heterogeneous and homogeneous categories. Impaired loans are subject to specific reserves. Loans in the homogeneous category, as well as non-impaired loans in the heterogeneous category, are evaluated as part of the general reserve. The general reserve is calculated by utilizing both quantitative and qualitative factors. There are different qualitative risks for the loans in each portfolio segment. The residential and CRE segments’ predominant risk characteristic are the collateral and the geographic location of the property collateralizing the loan. The risk is qualitatively assessed based on the total real estate loan concentration in those geographic areas. The C&I segment’s predominant risk characteristics are the global cash flows of the borrowers and guarantors and economic and market conditions. Consumer loans, excluding the student loan portfolio guaranteed by the U.S. Department of Education, are largely comprised of HELOCs for which the predominant risk characteristic is the real estate collateral securing the loans.
The Company also maintains an allowance for loan losses on PCI loans when there is deterioration in credit quality subsequent to acquisition. Based on the Company’s estimates of cash flows expected to be collected, the Company establishes an allowance for the PCI loans, with a charge to income through the provision for loan losses.  As of March 31, 2015, the Company has established an allowance of $643 thousand on $1.24 billion of PCI loans. As of December 31, 2014, an allowance of $714 thousand was established on $1.32 billion of PCI loans. The allowance balances for both periods were allocated mainly to the PCI CRE loan pools.
The Company’s methodology to determine the overall appropriateness of the allowance is based on a classification migration model and qualitative considerations. The migration model examines pools of loans having similar characteristics and analyzes their loss rates over a historical period. The Company assigns loss rates to each loan grade within each pool of loans. Loss rates derived by the migration model are based predominantly on historical loss trends that may not be entirely indicative of the actual or inherent loss potential. As such, the Company utilizes qualitative and environmental factors as adjusting mechanisms to supplement the historical results of the classification migration model. Qualitative considerations include, but are not limited to, prevailing economic or market conditions, relative risk profiles of various loan segments, volume concentrations, growth trends, delinquency and nonaccrual status, problem loan trends and geographic concentrations. Qualitative and environmental factors are reflected as percentage adjustments and are added to the historical loss rates derived from the classified asset migration model to determine the appropriate allowance for each loan pool.
When determined uncollectible, it is the Company’s policy to promptly charge-off the difference in the outstanding loan balance and the fair value of the collateral or the discounted value of expected cash flows. Recoveries are recorded when payment is received on loans that were previously charged-off through the allowance for loan losses. Allocation of a portion of the allowance to one segment of the loan portfolio does not preclude its availability to absorb losses in other segments.
The following tables present a summary of the activity in the allowance for loan losses on non-PCI loans, by portfolio segment, and PCI loans for the three months ended March 31, 2015 and 2014:
		Non-PCI Loans
($ in thousands)		CRE				C&I			Residential			Consumer			Unallocated				Total			PCI Loans			Total
Three Months Ended March 31, 2015
Beginning balance		$		72,263		$	134,598		$	43,856		$	10,248		$	—			$	260,965		$	714		$		261,679
(Reversal of) provision for loans losses		-2,333				5,378			-1,571			664			2,920				5,058			-71			4,987
Provision allocation for unfunded loan commitments and letters of credit		—				—			—			—			-2,920				-2,920			—			-2,920
Charge-offs		-1,002				-6,589			-746			-463			—				-8,800			—			-8,800
Recoveries		812				527			1,451			2			—				2,792			—			2,792
Net (charge-offs)/recoveries		-190				-6,062			705			-461			—				-6,008			—			-6,008
Ending balance		$		69,740		$	133,914		$	42,990		$	10,451		$	—			$	257,095		$	643		$		257,738
Ending balance allocated to:
Individually evaluated for impairment		$		1,574		$	17,906		$	692		$	1		$	—			$	20,173		$	—		$		20,173
Collectively evaluated for impairment		68,166				116,008			42,298			10,450			—				236,922			—			236,922
Acquired with deteriorated credit quality		—				—			—			—			—				—			643			643
Ending balance		$		69,740		$	133,914		$	42,990		$	10,451		$	—			$	257,095		$	643		$		257,738
		Non-PCI Loans
($ in thousands)		CRE				C&I			Residential			Consumer			Unallocated				Total			PCI Loans			Total
Three Months Ended March 31, 2014
Beginning balance		$	70,154			$	115,184		$	50,716		$	11,352		$		—		$	247,406		$		2,269	$	249,675
(Reversal of) provision for loans losses		-7,036				16,592			-2,575			-196			215				7,000			-67			6,933
Provision allocation for unfunded loan commitments and letters of credit		—				—			—			—			-215				-215			—			-215
Charge-offs		-319				-5,531			-283			-3			—				-6,136			—			-6,136
Recoveries		828				911			137			3			—				1,879			—			1,879
Net recoveries/(charge-offs)		509				-4,620			-146			—			—				-4,257			—			-4,257
Ending balance		$	63,627			$	127,156		$	47,995		$	11,156		$		—		$	249,934		$		2,202	$	252,136
Ending balance allocated to:
Individually evaluated for impairment		$	8,375			$	16,490		$	1,853		$	—		$		—		$	26,718		$		—	$	26,718
Collectively evaluated for impairment		55,252				110,666			46,142			11,156			—				223,216			—			223,216
Acquired with deteriorated credit quality		—				—			—			—			—				—			2,202			2,202
Ending balance		$	63,627			$	127,156		$	47,995		$	11,156		$		—		$	249,934		$		2,202	$	252,136
The following tables present the Company’s recorded investments in total loans as of March 31, 2015 and December 31, 2014 related to each balance in the allowance for loan losses by portfolio segment and disaggregated on the basis of the Company’s impairment methodology:
($ in thousands)		CRE			C&I			Residential			Consumer			Total
As of March 31, 2015
Individually evaluated for impairment		$	47,472		$	39,217		$	42,205		$	1,258		$	130,152
Collectively evaluated for impairment		6,323,569			7,604,022			4,496,929			1,582,910			20,007,430
Acquired with deteriorated credit quality (1)		674,380			77,525			458,085			27,996			1,237,986
Ending Balance		$	7,045,421		$	7,720,764		$	4,997,219		$	1,612,164		$	21,375,568
	-1		Loans net of ASC 310-30 discount.
($ in thousands)		CRE			C&I			Residential			Consumer			Total
As of December 31, 2014
Individually evaluated for impairment		$	65,393		$	36,543		$	50,925		$	1,259		$	154,120
Collectively evaluated for impairment		6,036,823			7,951,038			4,780,354			1,482,697			20,250,912
Acquired with deteriorated credit quality (1)		717,297			89,620			485,410			29,786			1,322,113
Ending Balance		$	6,819,513		$	8,077,201		$	5,316,689		$	1,513,742		$	21,727,145
	-1		Loans net of ASC 310-30 discount.
Allowance for Unfunded Loan Commitments, Off-Balance Sheet Credit Exposures and Recourse Provisions
The allowance for unfunded loan commitments, off-balance sheet credit exposures, and recourse provisions is maintained at a level believed by management to be sufficient to absorb estimated probable losses related to these unfunded credit facilities. The determination of the adequacy of the allowance is based on periodic evaluations of the unfunded credit facilities including an assessment of the probability of commitment usage, credit risk factors for loans outstanding to these same customers, and the terms and expiration dates of the unfunded credit facilities. Refer to Note 12 — Commitments and Contingencies for additional information.
PCI loans
As of the respective acquisition dates, PCI loans were pooled and accounted for at fair value, which represents the discounted value of the expected cash flows of the loan portfolio. The nonaccretable difference represents the Company’s estimate of the expected credit losses, which was considered in determining the fair value of the loans as of the respective acquisition dates. In estimating the nonaccretable difference, the Company (a) calculated the contractual amount and timing of undiscounted principal and interest payments (the “undiscounted contractual cash flows”) and (b) estimated the amount and timing of undiscounted expected principal and interest payments (the “undiscounted expected cash flows”). The difference between the undiscounted contractual cash flows and the undiscounted expected cash flows is the nonaccretable difference. The amount by which the undiscounted expected cash flows exceed the estimated fair value (the “accretable yield”) is accreted into interest income over the life of the loans.
Covered assets consist of loans receivable and OREO that were acquired in the WFIB acquisition on June 11, 2010 and in the UCB acquisition on November 6, 2009 for which the Company entered into shared-loss agreements with the FDIC. Pursuant to the terms of the shared-loss agreements, the FDIC is obligated to reimburse the Company 80% of eligible losses for both UCB and WFIB with respect to covered assets. For the UCB covered assets, the FDIC will reimburse the Company for 95% of eligible losses in excess of $2.05 billion. The Company has a corresponding obligation to reimburse the FDIC for 80% or 95%, as applicable, of eligible recoveries with respect to covered assets. The shared-loss coverage of the UCB commercial loans ended after December 31, 2014. The shared-loss coverage of the WFIB commercial loans will extend through June 30, 2015. The shared-loss coverage for both UCB and WFIB residential loans will extend through November 30, 2019 and June 30, 2020, respectively. Refer to Note 8 — Covered Assets and FDIC Indemnification Asset of the Company’s 2014 Form 10-K for additional details related to the shared-loss agreements. Of the total $1.24 billion PCI loans as of March 31, 2015, $311.6 million were covered under shared-loss agreements. Of the total $1.32 billion PCI loans as of December 31, 2014, $1.23 billion were covered under shared-loss agreements. As of March 31, 2015 and December 31, 2014, $354.4 million and $1.48 billion of total loans were covered under shared-loss agreements, respectively.
The following table presents the changes in the accretable yield for the PCI loans for the three months ended March 31, 2015 and 2014:
		Three Months Ended
		March 31,
($ in thousands)		2015			2014
Beginning balance		$	311,688		$	461,545
Additions		—			6,745
Accretion		-30,569			(61,946		)
Changes in expected cash flows		12,036			24,112
Ending balance		$	293,155		$	430,456
FDIC Indemnification Asset/Net Payable to FDIC
The Company is amortizing the difference between the recorded amount of the FDIC indemnification asset and the expected reimbursement from the FDIC over the life of the indemnification asset. Due to continued payoffs and improved credit performance of the covered portfolio as compared to the Company’s original estimates, the expected reimbursement from the FDIC under the shared-loss agreements has decreased and a net payable to the FDIC has been recorded. In prior years, due to the estimated losses from the covered portfolio and the corresponding expected payments from the FDIC, the Company recorded an FDIC indemnification asset. As of March 31, 2015, a net payable to the FDIC of $101.4 million is included in accrued expenses and other liabilities on the consolidated balance sheet. In comparison, as of March 31, 2014, the Company recorded a net FDIC indemnification asset of $27.6 million, which is included in other assets on the consolidated balance sheet.
The following table presents a summary of the FDIC indemnification asset/net payable to the FDIC for the three months ended March 31, 2015 and 2014:
		Three Months Ended
		March 31,
($ in thousands)		2015			2014
Beginning balance		$	-96,106		$	74,708
Amortization		-1,542			(28,490		)
Reductions (1)		-649			(11,842		)
Estimate of FDIC repayment (2)		-3,114			(6,824		)
Ending balance		$	-101,411		$	27,552
	-1		Reductions relate to charge-offs, partial prepayments, loan payoffs and loan sales which result in a corresponding reduction of the indemnification asset.
	-2		This represents the change in the calculated estimate the Company will be required to pay the FDIC at the end of the FDIC shared-loss agreements, due to lower thresholds of losses.
Loans Held for Sale
Loans held for sale were $196.1 million and $46.0 million as of March 31, 2015 and December 31, 2014, respectively. Loans held for sale are recorded at the lower of cost or fair value.  Fair value is derived from current market prices.  $820.5 million and $479.0 million of net loans receivable were reclassified from loans held-for-investment to loans held for sale during the three months ended March 31, 2015 and 2014, respectively. Loans transferred were primarily comprised of C&I and residential single-family loans for the three months ended March 31, 2015. In comparison, loans transferred were primarily comprised of student loans for the three months ended March 31, 2014. These loans were purchased by the Company with the original intent to be held for investment. However, subsequent to the purchase, the Company’s intent for these loans changed and they were consequently reclassified to loans held for sale. The Company recorded $1.7 million in write-downs related to loans transferred from loans held-for-investment to loans held for sale to allowance for loan losses for the three months ended March 31, 2015. There were no write-downs recorded on loans transferred from loans held-for-investment to loans held for sale for the three months ended March 31, 2014.
Proceeds from total loans sold were $679.8 million, resulting in net gains of $9.6 million for the three months ended March 31, 2015. Loans sold during the first quarter of 2015 comprised of C&I, residential single-family and consumer loans. In comparison, proceeds from total loans sold were $183.6 million, resulting in net gains of $6.2 million during the three months ended March 31, 2014. Loans sold during the first quarter of 2014 were comprised of student and C&I loans.

INVESTMENTS_IN_QUALIFIED_AFFOR

INVESTMENTS IN QUALIFIED AFFORDABLE HOUSING PARTNERSHIPS, NET, TAX CREDIT AND OTHER INVESTMENTS	3 Months Ended
	Mar. 31, 2015
INVESTMENTS IN QUALIFIED AFFORDABLE HOUSING PARTNERSHIPS, NET, TAX CREDIT AND OTHER INVESTMENTS
INVESTMENTS IN QUALIFIED AFFORDABLE HOUSING PARTNERSHIPS, NET, TAX CREDIT AND OTHER INVESTMENTS
	NOTE 10 — INVESTMENTS IN QUALIFIED AFFORDABLE HOUSING PARTNERSHIPS, NET, TAX CREDIT AND OTHER INVESTMENTS
	The Community Reinvestment Act (“CRA”) encourages banks to meet the credit needs of their communities for housing and other purposes, particularly in neighborhoods with low or moderate incomes.  The Company invests in certain affordable housing limited partnerships that qualify for CRA credits. Such limited partnerships are formed to develop and operate apartment complexes designed as high-quality affordable housing for lower income tenants throughout the United States. Each of the partnerships must meet the regulatory requirements for affordable housing for a minimum 15-year compliance period to fully utilize the tax credits. In addition to affordable housing limited partnerships, the Company invests in new market tax credit projects that qualify for CRA credits. The Company also invests in eligible projects that qualify for renewable energy and historic tax credits. Investments in renewable energy tax credits help promote the development of renewable energy sources, while the investments in historic tax credits promote the rehabilitation of historic buildings and economic revitalization of the surrounding areas.
	Investments in qualified affordable housing partnership, net
	As discussed in Note 2, the Company adopted ASU 2014-01 on January 1, 2015 with retrospective application to all periods presented. Prior to adopting ASU 2014-01, the Company applied the equity method or the cost method of accounting depending on the ownership percentage and the influence the Company has on these limited partnerships. The amortization of the investments in affordable housing limited partnerships was previously presented under Noninterest Expense. Under the proportional amortization method, the Company now amortizes the initial cost of the investment in proportion to the tax credits and other tax benefits received and recognize the amortization in the income statement as a component of income tax expense.
	The following tables present the impact of the new accounting guidance on the consolidated balance sheet and statement of income as of the periods indicated:
		December 31, 2014
	($ in thousands)	As Previously		As Revised
		Reported
	Consolidated Balance Sheet:
	Investment in qualified affordable housing partnerships, net	$	178,652	$	178,962
	Other assets —  Deferred tax assets	$	384,367	$	389,601
	Retained earnings	$	1,598,598	$	1,604,141
		Three Months Ended
		March 31, 2014
	($ in thousands)	As Previously		As Revised
		Reported
	Consolidated Statement of Income:
	Noninterest expense — Amortization of tax credit and other investments	$	5,964	$	1,492
	Income before taxes	$	111,690	$	116,163
	Provision for income taxes	$	34,949	$	41,992
	Net income	$	76,741	$	74,171
	Earnings per share
	Basic	$	0.54	$	0.52
	Diluted	$	0.54	$	0.52
	The following table presents the balances of the Company’s investments in qualified affordable housing partnerships, net and related unfunded commitments as of March 31, 2015 and December 31, 2014:
	($ in thousands)	March 31, 2015		December 31, 2014
	Investment in qualified affordable housing partnerships, net	$	182,719	$	178,962
	Accrued expenses and other liabilities — Unfunded commitments	$	50,884	$	43,311
	The following table presents other information related to the Company’s investments in qualified affordable housing partnerships, net for the periods indicated:
		Three Months Ended March 31,
	($ in thousands)	2015		2014
	Tax credits and other tax benefits recognized	$	8,775	$	7,792
	Amortization expense included in provision for income taxes	$	6,244	$	5,357
	Investments in tax credit and other investments
	Investments in tax credit and other investments were $117.0 million and $110.1 million as of March 31, 2015 and December 31, 2014, respectively, and were included in other assets on the consolidated balance sheets. The Company is not the primary beneficiary in these partnerships and, therefore is not required to consolidate its investments in tax credit and other investments on the consolidated financial statements. Depending on the ownership percentage and the influence the Company has on a limited partnership, the Company applies either the equity or cost method of accounting. Total unfunded commitments for these investments of $66.2 million and $71.4 million as of March 31, 2015 and December 31, 2014, respectively, were included in Accrued Expenses and Other Liabilities. Amortization of tax credit and other investments was $6.3 million and $1.5 million for the three months ended March 31, 2015 and 2014, respectively.

GOODWILL_AND_OTHER_INTANGIBLE_

GOODWILL AND OTHER INTANGIBLE ASSETS	3 Months Ended
	Mar. 31, 2015
GOODWILL AND OTHER INTANGIBLE ASSETS
GOODWILL AND OTHER INTANGIBLE ASSETS
	NOTE 11 — GOODWILL AND OTHER INTANGIBLE ASSETS
	Goodwill
	As of both March 31, 2015 and December 31, 2014, the carrying amount of goodwill was $469.4 million.
	Goodwill is tested for impairment on an annual basis as of December 31, or more frequently as events occur or circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying amount. The Company’s reporting units are equivalent to the Company’s operating segments. For additional information regarding the Company’s operating segments, refer to Note 14 - Business Segments, presented elsewhere in this report. The Company records impairment write-downs as charges to noninterest expense and adjustments to the carrying value of goodwill. Subsequent reversals of goodwill impairment are prohibited.
	The Company performed its annual impairment test as of December 31, 2014 and determined that there was no goodwill impairment as of December 31, 2014 as the fair values of all reporting units exceeded the then current carrying amounts of the goodwill. There were no triggering events during the quarter ended March 31, 2015 and therefore no additional goodwill impairment test was performed. No assurance can be given that goodwill will not be written down in future periods. Refer to Note 11 — Goodwill and other Intangible Assets in Item 8 of the Company’s 2014 Form 10-K for additional details related to the Company’s annual goodwill impairment analysis.
	Premiums on Acquired Deposits
	Premiums on acquired deposits represent the intangible value of depositor relationships resulting from deposit liabilities assumed in various acquisitions. These intangibles are tested for impairment on an annual basis, or more frequently as events occur, or as current circumstances and conditions warrant. As of both March 31, 2015 and December 31, 2014, the gross carrying amount of premiums on acquired deposits was $108.8 million. The related accumulated amortization totaled $65.9 million and $63.5 million, as of March 31, 2015 and December 31, 2014, respectively.
	The Company amortizes premiums on acquired deposits based on the projected useful lives of the related deposits. Amortization expense of premiums on acquired deposits was $2.4 million and $2.5 million for the three months ended March 31, 2015 and 2014, respectively. The Company did not record any impairment write-downs on deposit premiums for the three months ended March 31, 2015 and 2014.
	The following table presents the estimated future amortization expense of premiums on acquired deposits for the succeeding five years and thereafter:
	Estimated Amortization Expense of Premiums on Acquired Deposits	Amount
		($ in thousands)
	Nine months ending December 31, 2015	$	6,842
	Year ending December 31, 2016	8,086
	Year ending December 31, 2017	6,935
	Year ending December 31, 2018	5,883
	Year ending December 31, 2019	4,864
	Thereafter	10,307
	Total	$	42,917

COMMITMENTS_AND_CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	3 Months Ended
	Mar. 31, 2015
COMMITMENTS AND CONTINGENCIES
COMMITMENTS AND CONTINGENCIES
	NOTE 12 — COMMITMENTS AND CONTINGENCIES
	Credit Extensions — In the normal course of business, the Company has various outstanding commitments to extend credit that are not reflected in the accompanying consolidated financial statements. While the Company does not anticipate losses as a result of these transactions, commitments to extend credit are included in determining the appropriate level of the allowance for unfunded commitments and credit exposures.
	Loan commitments are agreements to lend to a customer provided there is no violation of any condition established in the agreement. Commitments generally have fixed expiration dates or other termination clauses. Because many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future funding requirements. As of March 31, 2015 and December 31, 2014, undisbursed loan commitments amounted to $3.71 billion and $3.87 billion, respectively. As of March 31, 2015 and December 31, 2014 all undisbursed loan commitments were for loans held for investment.
	Commercial letters of credit are issued to facilitate domestic and foreign trade transactions while standby letters of credit (“SBLCs”) are issued to make payments on behalf of customers when certain specified future events occur. As of March 31, 2015 and December 31, 2014, commercial letters of credit and SBLCs totaled $1.44 billion and $1.25 billion, respectively. The Company issues SBLCs and financial guarantees to support the obligations of its customers to beneficiaries. Based on historical trends, the probability that it will have to make payments under SBLCs is low. Additionally, in many cases, the Company holds collateral in various forms against these SBLCs. As part of its risk management activities, the Company monitors the creditworthiness of the customer as well as its SBLCs exposure. If the customer fails to perform the specified obligation to the beneficiary, the beneficiary may draw upon the SBLCs by presenting documents that are in compliance with the letter of credit terms. In that event, the Company either repays the money borrowed or advanced, makes payment on account of the indebtedness of the customer or makes payment on account of the default by the customer in the performance of an obligation, to the beneficiary up to the full notional amount of the SBLCs. The customer is obligated to reimburse the Company for any such payment. If the customer fails to pay, the Company would, as applicable, liquidate collateral and/or offset accounts.
	Credit card lines are unsecured commitments that are not legally binding. Management reviews credit card lines at least annually and, upon evaluation of the customers’ creditworthiness, the Bank has the right to terminate or change certain terms of the credit card lines.
	The Company uses the same credit policies in making commitments and conditional obligations as in extending loan facilities to customers. It evaluates each customer’s creditworthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by the Company upon extension of credit, is based on management’s credit evaluation of the counterparty. Collateral held varies, but may include accounts receivable, inventory, property, plant and equipment, and income-producing commercial properties.
	As of March 31, 2015 and December 31, 2014, the allowance for unfunded loan commitments, off-balance sheet credit exposures, and recourse provision amounted to $15.6 million and $12.7 million, respectively. These amounts were included in accrued expenses and other liabilities in the accompanying consolidated balance sheets.
	Guarantees — The Company has sold or securitized loans with recourse in the ordinary course of business. For loans that have been sold or securitized with recourse, the recourse component is considered a guarantee. As such, the Company is committed to stand ready to perform if the loan defaults and to make payments to remedy the default. As of March 31, 2015, the maximum potential future payment, which is generally the unpaid principal balance of total loans sold or securitized with recourse amounted to $237.7 million and was comprised of $34.3 million in single-family loans with full recourse and $203.4 million in multifamily loans with limited recourse. In comparison, total loans sold or securitized with recourse amounted to $249.8 million as of December 31, 2014, and was comprised of $35.5 million in single-family loans with full recourse and $214.3 million in multifamily loans with limited recourse. The recourse provision on multifamily loans varies by loan sale and is limited to 4% of the top loss on the underlying loans. The Company’s recourse reserve related to loan sales and securitizations totaled $673 thousand and $2.2 million as of March 31, 2015 and December 31, 2014, respectively, and were included in accrued expenses and other liabilities in the accompanying consolidated balance sheets. The Company continues to experience minimal losses from the single-family and multifamily loan portfolios sold or securitized with recourse.
	Litigation — In the ordinary course of the Company’s business, the Company is a party to various legal actions, which the Company believes are incidental to the operation of our business. In accordance with ASC 450, Contingencies, the Company accrues reserves for currently outstanding lawsuits, claims and proceedings when it is probable that a liability has been incurred and the liability can be reasonably estimated. The outcome of litigation and other legal and regulatory matters is inherently uncertain, and it is possible that one or more of the legal or regulatory matters, if any, currently pending or threatened could have a material adverse effect on the Company’s liquidity, consolidated financial position, and/or results of operations. Based on the information currently available, advice of counsel and established reserves, the Company believes that the eventual outcome of the matters described below, will not, individually or in the aggregate have a material adverse effect on the Company’s consolidated financial position.
	On September 8, 2014, a jury in the case titled “F&F, LLC and 618 Investment, Inc. v. East West Bank,” Superior Court of the State of California for the County of Los Angeles, Case No. BC462714, delivered a verdict in favor of plaintiff F&F, LLC, which was adjusted downward by the court on December 18, 2014 to the amount of $36.6 million.  The case is being appealed.  As of March 31, 2015, a litigation accrual of $32.6 million has been recorded.

STOCKHOLDERS_EQUITY_AND_EARNIN

STOCKHOLDERS' EQUITY AND EARNINGS PER SHARE	3 Months Ended
	Mar. 31, 2015
STOCKHOLDERS' EQUITY AND EARNINGS PER SHARE
STOCKHOLDERS' EQUITY AND EARNINGS PER SHARE
	NOTE 13 — STOCKHOLDERS’ EQUITY AND EARNINGS PER SHARE
	MetroCorp Acquisition — On January 17, 2014, the Company completed the acquisition of MetroCorp. The final consideration included 5,583,093 shares of East West common stock, $89.4 million of cash, $2.4 million of additional cash to MetroCorp stock option holders and a MetroCorp warrant, fair valued at $8.8 million, assumed by the Company.  Prior to the acquisition, MetroCorp had an outstanding warrant to purchase 771,429 shares of its common stock.  At acquisition, the rights of the warrant holder were converted into the right to acquire 230,282 shares of East West’s common stock. The warrant has not been exercised as of March 31, 2015.
	Stock Repurchase Program — On July 17, 2013, the Company’s Board of Directors authorized a stock repurchase program to buy back up to $100.0 million of the Company’s common stock. The Company did not repurchase any shares under this program during the three months ended March 31, 2015 and 2014.
	Quarterly Dividends — On January 21, 2015, dividends for the Company’s common stock were declared for the first quarter of 2015 in the amount of $0.20 per share and paid on February 17, 2015 to stockholders of record on February 2, 2015. This represents an increase of $0.02 per share, or an 11% increase from the prior quarterly dividend of $0.18 per share. Cash dividends totaling $28.9 million and $25.9 million were paid to the Company’s common shareholders during the three months ended March 31, 2015 and 2014, respectively.
	Earnings Per Share (“EPS”) — Certain of the Company’s instruments containing rights to nonforfeitable dividends granted in stock-based payment transactions are considered participating securities prior to vesting and, therefore, have been included in the earnings allocations in computing basic and diluted EPS under the two-class method. Basic EPS was computed by dividing net income, net of income allocated to participating securities, by the weighted-average number of common shares outstanding during each period. The computation of diluted EPS reflects the additional dilutive effect of common stock equivalents such as stock options, unvested restricted stock units and warrants.
	The following tables present earnings per share calculations for the three months ended March 31, 2015 and 2014:
			Three Months Ended March 31, 2015
	($ in thousands, except per share data)		Net Income			Number of Shares			Per Share Amounts
	Net income		$	100,027
	Less:
	Earnings allocated to participating securities		(3		)
	Basic EPS — income allocated to common stockholders		$	100,024		143,655			$	0.7
	Effect of dilutive securities:
	Stock options		—			6
	Restricted stock units		106			533
	Warrants		—			155
	Diluted EPS — income allocated to common stockholders		$	100,130		144,349			$	0.69
			Three Months Ended March 31, 2014
	($ in thousands, except per share data)		Net Income			Number of Shares			Per Share Amounts
	Net income (1)		$	74,171
	Less:
	Earnings allocated to participating securities		(160		)
	Basic EPS — income allocated to common stockholders (1)		$	74,011		141,962			$	0.52
	Effect of dilutive securities:
	Stock options		—			79
	Restricted stock units		80			447
	Warrants		—			144
	Diluted EPS — income allocated to common stockholders(1)		$	74,091		142,632			$	0.52
		-1		Prior periods were restated to reflect the retrospective application of adopting the new accounting guidance related to the Company’s investments in qualified affordable housing projects ASU 2014-01. See note 10 of the Notes to Consolidated Financial Statements for additional information.
	The following table presents the weighted-average stock options outstanding and restricted stock units for the three months ended March 31, 2015 and 2014, respectively, that were anti-dilutive, and therefore not included in the computation of diluted EPS:
			Three Months Ended
			March 31,
	(In thousands)		2015		2014
	Stock options		—		81
	Restricted stock units		170		168
	Accumulated Other Comprehensive Income (Loss) — As of March 31, 2015, total accumulated other comprehensive income was $13.6 million which included net unrealized gains on available-for-sale securities of $13.5 million and net unrealized gains on other investments of $54 thousand. As of December 31, 2014, total accumulated other comprehensive income was $4.2 million which consisted of net unrealized gains on available-for-sale securities of $4.2 million and unrealized gains on other investments of $61 thousand.
	The accumulated other comprehensive income (loss) balances were as follows:
			Three Months Ended March 31,
			2015										2014
	($ in thousands)		Available-for-Sale			Other				Accumulated			Available-for-Sale			Other			Accumulated
			Investment			Investments				Other			Investment			Investments			Other
			Securities							Comprehensive			Securities						Comprehensive
										Income									(Loss) Income
	Balance, beginning of the period		$	4,176		$	61			$	4,237		$	(30,538	)	$	79		$	(30,459	)
	Net unrealized gains (losses) arising during period		11,879			(7		)		11,872			15,422			(17		)	15,405
	Less: reclassification adjustment for gains included in net income		(2,554		)	—				(2,554		)	(1,983		)	—			(1,983		)
	Net unrealized gains (losses)		9,325			(7		)		9,318			13,439			(17		)	13,422
	Balance, end of the period		$	13,501		$	54			$	13,555		$	(17,099	)	$	62		$	(17,037	)
	The components of other comprehensive income (loss), reclassifications to net income by income statement line item and the related tax effects were as follows:
			Three Months Ended March 31,
			2015										2014
	($ in thousands)		Before-Tax			Tax				Net-of-Tax			Before-Tax			Tax			Net-of-Tax
			Amount			Expense				Amount			Amount			Expense			Amount
						or Benefit										or Benefit
	Unrealized gains on available-for-sale investment securities :
	Net unrealized gains arising during period		$	20,482		$	(8,603	)		$	11,879		$	26,590		$	(11,168	)	$	15,422
	Less: reclassification adjustment for gains included in net income (1)		(4,404		)	1,850				(2,554		)	(3,418		)	1,435			(1,983		)
	Net unrealized gains		16,078			(6,753		)		9,325			23,172			(9,733		)	13,439
	Unrealized losses on other investments:
	Net unrealized losses arising during period		(12		)	5				(7		)	(29		)	12			(17		)
	Less: reclassification adjustment for (gains) losses included in income		—			—				—			—			—			—
	Net unrealized losses		(12		)	5				(7		)	(29		)	12			(17		)
	Other comprehensive income		$	16,066		$	(6,748	)		$	9,318		$	23,143		$	(9,721	)	$	13,422
	-1		The pretax amount is reported in net gains on sales of available-for-sale investment securities in the consolidated statements of income.

BUSINESS_SEGMENTS

BUSINESS SEGMENTS	3 Months Ended
	Mar. 31, 2015
BUSINESS SEGMENTS
BUSINESS SEGMENTS
	NOTE 14 —    BUSINESS SEGMENTS
	The Company utilizes an internal reporting system to measure the performance of various operating segments within the Bank and the Company. The Company has identified three operating segments for purposes of management reporting: (1) Retail Banking; (2) Commercial Banking; and (3) Other. These three business divisions meet the criteria of an operating segment: the segment engages in business activities from which it earns revenues and incurs expenses, its operating results are regularly reviewed by the Company’s chief operating decision-maker to render decisions about resources to be allocated to the segment and assess its performance, and discrete financial information is available.
	The Retail Banking segment focuses primarily on retail operations through the Bank’s branch network. The Commercial Banking segment, which includes CRE, primarily generates commercial loans through the commercial lending offices located in the Bank’s production offices. Furthermore, the Company’s Commercial Banking segment also offers a wide variety of international finance and trade services and products. The remaining centralized functions, including treasury activities and eliminations of inter-segment amounts, have been aggregated and included in the Other segment, which provides broad administrative support to the two core segments.
	The Company’s funds transfer pricing assumptions are intended to promote core deposit growth and to reflect the current risk profiles of various loan categories within the credit portfolio. Transfer pricing assumptions and methodologies are reviewed at least annually to ensure that the Company’s process is reflective of current market conditions. The transfer pricing process is formulated with the goal of incenting loan and deposit growth that is consistent with the Company’s overall growth objectives as well as to provide a reasonable and consistent basis for the measurement of the Company’s business segments and product net interest margins.
	The accounting policies of the segments are the same as those described in the summary of significant accounting policies. Operating segment results are based on the Company’s internal management reporting process, which reflects assignments and allocations of certain operating and administrative costs and the provision for loan losses. Net interest income is based on the Company’s internal funds transfer pricing system which assigns a cost of funds or a credit for funds to assets or liabilities based on their type, maturity or repricing characteristics. Noninterest income and noninterest expense, including depreciation and amortization, directly attributable to a segment are assigned to that business segment. Indirect costs, including overhead expense, are allocated to the segments based on several factors, including, but not limited to, full-time equivalent employees, loan volume and deposit volume. The provision for credit losses is allocated based on actual charge-offs for the period as well as average loan balances for each segment during the period. The Company evaluates overall performance based on profit or loss from operations before income taxes excluding nonrecurring gains and losses.
	Changes in the Company’s management structure or reporting methodologies may result in changes in the measurement of operating segment results. Results for prior periods are generally restated for comparability for changes in management structure or reporting methodologies unless it is not deemed practicable to do so.
	The following tables present the operating results and other key financial measures for the individual operating segments for the three months ended March 31, 2015 and 2014:
			Three Months Ended March 31, 2015
	($ in thousands)		Retail		Commercial		Other		Total
			Banking		Banking
	Interest income		$	87,446	$	158,786	$	17,029	$	263,261
	Charge for funds used		-23,298		-37,351		-9,445		(70,094		)
	Interest spread on funds used		64,148		121,435		7,584		193,167
	Interest expense		-12,224		-4,263		-11,057		(27,544		)
	Credit on funds provided		57,668		8,016		4,410		70,094
	Interest spread on funds provided		45,444		3,753		-6,647		42,550
	Net interest income		$	109,592	$	125,188	$	937	$	235,717
	Provision for loan losses		$	731	$	4,256	$	—	$	4,987
	Depreciation, amortization and accretion (1)		$	1,682	$	-10,477	$	12,922	$	4,127
	Goodwill		$	357,207	$	112,226	$	—	$	469,433
	Segment pre-tax profit		$	52,935	$	93,175	$	716	$	146,826
	Segment assets		$	7,540,501	$	15,491,368	$	6,874,966	$	29,906,835
			Three Months Ended March 31, 2014
	($ in thousands)		Retail		Commercial		Other		Total
			Banking		Banking
	Interest income		$	98,724	$	169,076	$	18,373	$	286,173
	Charge for funds used		-16,045		-21,328		-23,123		(60,496		)
	Interest spread on funds used		82,679		147,748		-4,750		225,677
	Interest expense		-11,711		-3,280		-13,216		(28,207		)
	Credit on funds provided		48,193		8,436		3,867		60,496
	Interest spread on funds provided		36,482		5,156		-9,349		32,289
	Net interest income (loss)		$	119,161	$	152,904	$	-14,099	$	257,966
	Provision for loan losses		$	2,652	$	4,281	$	—	$	6,933
	Depreciation, amortization and accretion (1) (2)		$	2,571	$	-3,328	$	9,821	$	9,064
	Goodwill		$	354,163	$	104,304	$	—	$	458,467
	Segment pre-tax profit (loss) (2)		$	52,170	$	86,931	$	-22,938	$	116,163
	Segment assets (2)		$	7,877,996	$	13,661,149	$	5,861,459	$	27,400,604
		-1		Includes amortization and accretion related to the FDIC indemnification asset.
		-2		Prior periods were restated to reflect the retrospective application of adopting the new accounting guidance related to the Company’s investments in qualified affordable housing projects ASU 2014-01. See Note 10 of the Notes to Consolidated Financial Statements for additional information.

SUBSEQUENT_EVENTS

SUBSEQUENT EVENTS	3 Months Ended
	Mar. 31, 2015
SUBSEQUENT EVENTS
SUBSEQUENT EVENTS
	NOTE 15 —    SUBSEQUENT EVENTS
	Dividend Payout
	In April 2015, the Company’s Board of Directors declared a quarterly dividend of $0.20 per share on the Company’s common stock payable on or about May 15, 2015 to shareholders of record as of May 1, 2015.

FAIR_VALUE_MEASUREMENT_AND_FAI1

FAIR VALUE MEASUREMENT AND FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)	3 Months Ended
	Mar. 31, 2015
FAIR VALUE MEASUREMENT AND FAIR VALUE OF FINANCIAL INSTRUMENTS
Assets (Liabilities) Measured at Fair Value on a Recurring Basis
	Assets (Liabilities) Measured at Fair Value on a Recurring Basis
	as of March 31, 2015
	($ in thousands)		Fair Value			Quoted Prices in			Significant			Significant
			Measurements			Active Markets			Other			Unobservable
			March 31, 2015			for Identical			Observable			Inputs
						Assets			Inputs			(Level 3)
						(Level 1)			(Level 2)
	Available-for-sale investment securities:
	U.S. Treasury securities		$	1,172,226		$	1,172,226		$	—		$	—
	U.S. government agency and U.S. government sponsored enterprise debt securities		411,966			—			411,966			—
	U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities:
	Commercial mortgage-backed securities		95,235			—			95,235			—
	Residential mortgage-backed securities		727,356			—			727,356			—
	Municipal securities		191,246			—			191,246			—
	Other residential mortgage-backed securities:
	Investment grade		51,501			—			51,501			—
	Corporate debt securities:
	Investment grade		140,401			—			140,401			—
	Non-investment grade		9,501			—			9,501			—
	Other securities		41,653			32,477			9,176			—
	Total available-for-sale investment securities		$	2,841,085		$	1,204,703		$	1,636,382		$	—
	Derivative assets:
	Foreign exchange options		$	3,683		$	—		$	3,683		$	—
	Interest rate swaps and caps		$	66,060		$	—		$	66,060		$	—
	Foreign exchange contracts		$	13,340		$	—		$	13,340		$	—
	Derivative liabilities:
	Interest rate swaps on certificates of deposits		$	-6,370		$	—		$	-6,370		$	—
	Interest rate swaps and caps		$	-66,914		$	—		$	-66,914		$	—
	Foreign exchange contracts		$	-13,080		$	—		$	-13,080		$	—
	Embedded derivative liabilities		$	-3,412		$	—		$	—		$	(3,412	)
	Assets (Liabilities) Measured at Fair Value on a Recurring Basis
	as of December 31, 2014
	($ in thousands)		Fair Value			Quoted Prices in			Significant			Significant
			Measurements			Active Markets			Other			Unobservable
			December 31, 2014			for Identical			Observable			Inputs
						Assets			Inputs			(Level 3)
						(Level 1)			(Level 2)
	Available-for-sale investment securities:
	U.S. Treasury securities		$	873,435		$	873,435		$	—		$	—
	U.S. government agency and U.S. government sponsored enterprise debt securities		311,024			—			311,024			—
	U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities:
	Commercial mortgage-backed securities		141,420			—			141,420			—
	Residential mortgage-backed securities		791,088			—			791,088			—
	Municipal securities		250,448			—			250,448			—
	Other residential mortgage-backed securities:
	Investment grade		53,918			—			53,918			—
	Other commercial mortgage-backed securities:
	Investment grade		34,053			—			34,053			—
	Corporate debt securities:
	Investment grade		115,182			—			115,182			—
	Non-investment grade		14,681			—			8,153			6,528
	Other securities		41,116			32,105			9,011			—
	Total available-for-sale investment securities		$	2,626,365		$	905,540		$	1,714,297		$	6,528
	Derivative assets:
	Foreign exchange options		$	6,136		$	—		$	6,136		$	—
	Interest rate swaps and caps		$	41,534		$	—		$	41,534		$	—
	Foreign exchange contracts		$	8,123		$	—		$	8,123		$	—
	Derivative liabilities:
	Interest rate swaps on certificates of deposits		$	-9,922		$	—		$	-9,922		$	—
	Interest rate swaps and caps		$	-41,779		$	—		$	-41,779		$	—
	Foreign exchange contracts		$	-9,171		$	—		$	-9,171		$	—
	Embedded derivative liabilities		$	-3,392		$	—		$	—		$	(3,392	)
Reconciliation of assets and liabilities measured at fair value using significant unobservable inputs
									2014
			2015
	($ in thousands)		Corporate Debt			Embedded			Corporate Debt			Embedded
			Securities:			Derivatives			Securities:			Derivatives
			Non-Investment Grade			Liabilities			Non-Investment Grade			Liabilities
	Beginning balance, January 1		$	6,528		$	-3,392		$	6,371		$	(3,655	)
	Total gains or (losses) for the period:
	Included in earnings (1)		960			-20			—			257
	Included in other comprehensive income (unrealized)(2)		922			—			434			—
	Purchases, issues, sales, settlements:
	Purchases		—			—			—			—
	Issues		—			—			—			—
	Sales		-7,219			—			—			—
	Settlements		-98			—			-88			—
	Transfer from investment grade to non-investment grade		—			—			—			—
	Transfers in and/or out of Level 3		-1,093			—			—			—
	Ending balance, March 31		$	—		$	-3,412		$	6,717		$	(3,398	)
	Changes in unrealized losses included in earnings relating to assets and liabilities held at the end of March 31		$	—		$	20		$	—		$	(257	)
		-1		Realized gains or losses of corporate debt securities and embedded derivative liabilities are included in net gains on sales of investment securities and other operating expense, respectively, in the consolidated statements of income.
		-2		Unrealized gains or losses on available-for-sale investment securities are reported in other comprehensive income, net of tax, in the consolidated statements of comprehensive income.
Assets Measured at Fair Value on a Nonrecurring Basis
			Assets Measured at Fair Value on a Nonrecurring Basis
			as of March 31, 2015
	($ in thousands)		Fair Value			Quoted Prices in			Significant			Significant
			Measurements			Active Markets			Other			Unobservable
						for Identical Assets			Observable			Inputs
						(Level 1)			Inputs			(Level 3)
									(Level 2)
	Non-PCI impaired loans:
	Commercial Real Estate (“CRE”)		$	13,648		$	—		$	—		$	13,648
	Commercial and Industrial (“C&I”)		11,356			—			—			11,356
	Residential		14,306			—			—			14,306
	Consumer		107			—			—			107
	Total non-PCI impaired loans		$	39,417		$	—		$	—		$	39,417
	OREO		$	1,676		$	—		$	—		$	1,676
			Assets Measured at Fair Value on a Nonrecurring Basis
			as of December 31, 2014
	($ in thousands)		Fair Value			Quoted Prices in			Significant			Significant
			Measurements			Active Markets			Other			Unobservable
						for Identical Assets			Observable			Inputs
						(Level 1)			Inputs			(Level 3)
									(Level 2)
	Non-PCI impaired loans:
	CRE		$	26,089		$	—		$	—		$	26,089
	C&I		16,581			—			—			16,581
	Residential		25,034			—			—			25,034
	Consumer		107			—			—			107
	Total non-PCI impaired loans		$	67,811		$	—		$	—		$	67,811
	OREO		$	17,521		$	—		$	—		$	17,521
Summary of increase (decrease) in value of certain assets for which a nonrecurring fair value adjustment has been recognized
			Three Months Ended March 31,
	($ in thousands)		2015			2014
	Non-PCI impaired loans:
	CRE		$	841		$	-464
	C&I		-2,470			-6,530
	Residential		-239			-365
	Consumer		—			—
	Total non-PCI impaired loans		$	-1,868		$	-7,359
	OREO		$	-277		$	-526
Carrying amounts and fair values of financial instruments
			March 31, 2015
	($ in thousands)		Carrying			Level 1			Level 2			Level 3			Estimated
			Amount												Fair Value
	Financial Assets:
	Cash and cash equivalents		$	1,886,199		$	1,886,199		$	—		$	—		$	1,886,199
	Short-term investments		$	325,350		$	—		$	325,350		$	—		$	325,350
	Securities purchased under resale agreements		$	1,550,000		$	—		$	1,597,101		$	—		$	1,597,101
	Loans held for sale		$	196,111		$	—		$	196,111		$	—		$	196,111
	Loans receivable, net		$	21,116,931		$	—		$	—		$	20,905,743		$	20,905,743
	Investment in Federal Home Loan Bank stock		$	28,603		$	—		$	28,603		$	—		$	28,603
	Investment in Federal Reserve Bank stock		$	54,556		$	—		$	54,556		$	—		$	54,556
	Accrued interest receivable		$	86,186		$	—		$	86,186		$	—		$	86,186
	Financial Liabilities:
	Customer deposit accounts:
	Demand, savings and money market deposits		$	18,786,462		$	—		$	18,786,462		$	—		$	18,786,462
	Time deposits		$	6,376,371		$	—		$	—		$	6,358,260		$	6,358,260
	Federal Home Loan Bank advances		$	317,777		$	—		$	334,286		$	—		$	334,286
	Securities sold under repurchase agreements		$	695,000		$	—		$	751,270		$	—		$	751,270
	Accrued interest payable		$	12,141		$	—		$	12,141		$	—		$	12,141
	Long-term debt		$	220,905		$	—		$	207,906		$	—		$	207,906
			December 31, 2014
	($ in thousands)		Carrying			Level 1			Level 2			Level 3			Estimated
			Amount												Fair Value
	Financial Assets:
	Cash and cash equivalents		$	1,039,885		$	1,039,885		$	—		$	—		$	1,039,885
	Short-term investments		$	338,714		$	—		$	338,714		$	—		$	338,714
	Securities purchased under resale agreements		$	1,225,000		$	—		$	1,191,060		$	—		$	1,191,060
	Loans held for sale		$	45,950		$	—		$	45,950		$	—		$	45,950
	Loans receivable, net		$	21,468,270		$	—		$	—		$	20,997,379		$	20,997,379
	Investment in Federal Home Loan Bank stock		$	31,239		$	—		$	31,239		$	—		$	31,239
	Investment in Federal Reserve Bank stock		$	54,451		$	—		$	54,451		$	—		$	54,451
	Accrued interest receivable		$	88,303		$	—		$	88,303		$	—		$	88,303
	Financial Liabilities:
	Customer deposit accounts:
	Demand, savings and money market deposits		$	17,896,035		$	—		$	17,896,035		$	—		$	17,896,035
	Time deposits		$	6,112,739		$	—		$	—		$	6,095,217		$	6,095,217
	Federal Home Loan Bank advances		$	317,241		$	—		$	336,302		$	—		$	336,302
	Securities sold under repurchase agreements		$	795,000		$	—		$	870,434		$	—		$	870,434
	Accrued interest payable		$	11,303		$	—		$	11,303		$	—		$	11,303
	Long-term debt		$	225,848		$	—		$	205,777		$	—		$	205,777
Fair Value, Measurements, Recurring
Quantitative information
Schedule of quantitative information about significant unobservable inputs used in the valuation of assets and liabilities classified as Level 3
	($ in thousands)						Valuation		Unobservable		Range of Inputs		Weighted
				Fair Value			Technique(s)		Input(s)				Average
				Measurements
				(Level 3)
	March 31, 2015
	Embedded derivative liabilities			$	(3,412	)	Discounted cash flow		Credit risk		0.03% - 0.07%		0.06%
	December 31, 2014
	Available-for-sale investment securities:
	Corporate debt securities:
	Non-investment grade			$	6,528		Discounted cash flow		Constant prepayment rate		0.00% - 1.00%		0.73%
									Constant default rate		0.75% - 1.20%		0.87%
									Loss severity		85.00%		85.00%
									Discount margin		4.50% - 7.50%		6.94%
	Embedded derivative liabilities			$	(3,392	)	Discounted cash flow		Credit risk		0.12% - 0.14%		0.13%
Fair Value, Measurements, Nonrecurring
Quantitative information
Schedule of quantitative information about significant unobservable inputs used in the valuation of assets and liabilities classified as Level 3
	($ in thousands)		Fair Value			Valuation		Unobservable		Range of Inputs		Weighted
			Measurements			Technique(s)		Input(s)				Average
			(Level 3)
	March 31, 2015
	Non-PCI impaired loans		$	3,578		Discounted cash flow		Discount rate		0% - 86%		58%
			$	35,839		Market comparables		Discount rate (1)		0% - 100%		7%
	OREO		$	1,676		Appraisal		Selling cost		8%		8%
	December 31, 2014
	Non-PCI impaired loans		$	11,499		Discounted cash flow		Discount rate		0% - 81%		49%
			$	56,312		Market comparables		Discount rate (1)		0% - 100%		4%
	OREO		$	17,521		Appraisal		Selling cost		8%		8%
		-1		Discount rate is adjusted for factors such as liquidation cost of collateral and selling costs.

STOCKBASED_COMPENSATION_Tables

STOCK-BASED COMPENSATION (Tables)	3 Months Ended
	Mar. 31, 2015
STOCK-BASED COMPENSATION
Summary of stock options activity
	The following table presents the activity for the Company’s stock options as of and for the three months ended March 31, 2015:
		Shares	Weighted		Weighted	Aggregate
			Average		Average	Intrinsic
			Exercise		Remaining	Value
			Price		Contractual	(In thousands)
					Term
	Outstanding at beginning of period	42,116	$	20.75	—	$	—
	Granted	—	—		—	—
	Exercised	-39,751	21.09		—	—
	Expired	—	—		—	—
	Outstanding at end of period	2,365	$	14.95	0.77 years	$	60
	Vested or expected to vest at end of period	2,365	$	14.95	0.77 years	$	60
	Exercisable at end of period	2,365	$	14.95	0.77 years	$	60
Schedule of time-based and performance-based restricted stock awards activity
		March 31, 2015
		Restricted Stock Awards
		Time-Based			Performance-Based
		Shares	Weighted		Shares	Weighted
			Average			Average
			Price			Price
	Outstanding at beginning of period	751,020	$	30.61	518,553	$	29.64
	Granted	411,802	38.85		149,284	39.95
	Vested	-207,495	23.27		-144,445	22.05
	Forfeited	-13,119	34.05		—	—
	Outstanding at end of period	942,208	$	35.78	523,392	$	35.64

SECURITIES_REPURCHASED_UNDER_R

SECURITIES REPURCHASED UNDER RESALE AGREEMENTS AND SOLD UNDER REPURCHASE AGREEMENTS (Tables)

3 Months Ended

Mar. 31, 2015

SECURITIES PURCHASED UNDER RESALE AGREEMENTS AND SOLD UNDER REPURCHASE AGREEMENTS

Schedule of balance sheet offsetting for resale agreements and repurchase agreements

($ in thousands)

As of March 31, 2015

Net Amounts of

Gross Amounts Not Offset on the

Gross Amounts

Assets Presented

Consolidated Balance Sheet

Gross Amounts

Offset on the

on the

of Recognized

Consolidated

Consolidated

Financial

Collateral

Assets

Assets

Balance Sheet

Balance Sheet

Instruments

Received

Net Amount

Resale agreements

$

1,850,000

$

-300,000

$

1,550,000

$

-350,000

$

-1,195,203

$

4,797

-1

-2

Net Amounts of

Gross Amounts Not Offset on the

Liabilities

Consolidated Balance Sheet

Gross Amounts

Presented

Gross Amounts

Offset on the

on the

of Recognized

Consolidated

Consolidated

Financial

Collateral

Liabilities

Liabilities

Balance Sheet

Balance Sheet

Instruments

Posted

Net Amount

Repurchase agreements

$

995,000

$

-300,000

$

695,000

$

-350,000

-1

$

-345,000

-3

$

—

($ in thousands)

As of December 31, 2014

Net Amounts of

Gross Amounts Not Offset on the

Gross Amounts

Assets Presented

Consolidated Balance Sheet

Gross Amounts

Offset on the

on the

of Recognized

Consolidated

Consolidated

Financial

Collateral

Assets

Assets

Balance Sheet

Balance Sheet

Instruments

Received

Net Amount

Resale agreements

$

1,425,000

$

-200,000

$

1,225,000

$

-425,000

$

-797,172

$

2,828

-1

-2

Net Amounts of

Gross Amounts Not Offset on the

Liabilities

Consolidated Balance Sheet

Gross Amounts

Presented

Gross Amounts

Offset on the

on the

of Recognized

Consolidated

Consolidated

Financial

Collateral

Liabilities

Liabilities

Balance Sheet

Balance Sheet

Instruments

Posted

Net Amount

Repurchase agreements

$

995,000

$

-200,000

$

795,000

$

-425,000

-1

$

-370,000

-3

$

—

-1

Includes financial instruments subject to enforceable master netting arrangements that are not permitted to be offset under ASC 210-20-45 but would be eligible for offsetting to the extent an event of default has occurred.

-2

Represents the fair value of securities the Company has received under resale agreements, limited for table presentation purposes to the amount of the recognized asset due from each counterparty.

-3

Represents the fair value of securities the Company has pledged under repurchase agreements, limited for table presentation purposes to the amount of the recognized liability owed to each counterparty.

AVAILABLEFORSALE_INVESTMENT_SE1

AVAILABLE-FOR-SALE INVESTMENT SECURITIES (Tables)	3 Months Ended
	Mar. 31, 2015
AVAILABLE-FOR-SALE INVESTMENT SECURITIES
Schedule of amortized cost, gross unrealized gains, gross unrealized losses and fair value by major categories of available-for-sale investment securities
	($ in thousands)		Amortized		Gross			Gross		Fair
			Cost		Unrealized			Unrealized		Value
					Gains			Losses
	March 31, 2015
	Available-for-sale investment securities:
	U.S. Treasury securities		$	1,162,801	$	9,586		$	-161	$	1,172,226
	U.S. government agency and U.S. government sponsored enterprise debt securities		411,275		1,143			-452		411,966
	U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities:
	Commercial mortgage-backed securities		94,330		1,242			-337		95,235
	Residential mortgage-backed securities		717,693		11,274			-1,611		727,356
	Municipal securities		187,244		4,800			-798		191,246
	Other residential mortgage-backed securities:
	Investment grade (1)		50,297		1,310			-106		51,501
	Corporate debt securities:
	Investment grade (1)		141,140		—			-739		140,401
	Non-investment grade (1)		11,524		—			-2,023		9,501
	Other securities		41,543		436			-326		41,653
	Total available-for-sale investment securities		$	2,817,847	$	29,791		$	-6,553	$	2,841,085
	December 31, 2014
	Available-for-sale investment securities:
	U.S. Treasury securities		$	873,101	$	1,971		$	-1,637	$	873,435
	U.S. government agency and U.S. government sponsored enterprise debt securities		311,927		490			-1,393		311,024
	U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities:
	Commercial mortgage-backed securities		140,957		1,056			-593		141,420
	Residential mortgage-backed securities		785,412		9,754			-4,078		791,088
	Municipal securities		245,408		6,202			-1,162		250,448
	Other residential mortgage-backed securities:
	Investment grade (1)		52,694		1,359			-135		53,918
	Other commercial mortgage-backed securities:
	Investment grade (1)		34,000		53			—		34,053
	Corporate debt securities:
	Investment grade (1)		116,236		—			-1,054		115,182
	Non-investment grade (1)		17,881		—			-3,200		14,681
	Other securities		41,589		243			-716		41,116
	Total available-for-sale investment securities		$	2,619,205	$	21,128		$	-13,968	$	2,626,365
		-1		Available-for-sale investment securities rated BBB- or higher by S&P or Baa3 or higher by Moody’s are considered investment grade. Conversely, available-for-sale investment securities rated lower than BBB- by S&P or lower than Baa3 by Moody’s are considered non-investment grade.
Schedule of sales of available-for-sale investment securities
	Three Months Ended
	March 31,
	($ in thousands)		2015		2014
	Proceeds from sales		$	180,501	$	330,231
	Gross realized gains		$	4,404	$	3,545
	Gross realized losses		$	—	$	127	-1
	Related tax expense		$	1,850	$	1,436
		-1		The gross $127 thousand of losses resulted from the available-for-sale investment securities acquired from MetroCorp which were sold immediately after the acquisition closed.
Schedule of other than temporary impairment credit losses recognized in earnings
			Three Months Ended
			March 31,
	($ in thousands)		2015		2014
	Beginning balance		$	112,338	$	115,511
	Addition of OTTI that was not previously recognized		—		—
	Additional increases to the amount related to the credit loss for which an OTTI was previously recognized		—		—
	Reduction for securities sold		-5,650		—
	Ending balance		$	106,688	$	115,511
Gross unrealized losses and related fair values of available-for-sale investment securities
			Less Than 12 Months					12 Months or More				Total
	($ in thousands)		Fair		Unrealized			Fair		Unrealized		Fair		Unrealized
			Value		Losses			Value		Losses		Value		Losses
	March 31, 2015
	Available-for-sale investment securities:
	U.S. Treasury securities		$	61,684	$	-37		$	50,860	$	-124	$	112,544	$	-161
	U.S. government agency and U.S. government sponsored enterprise debt securities		144,114		-383			24,927		-69		169,041		-452
	U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities:
	Commercial mortgage-backed securities		14,119		-141			13,541		-196		27,660		-337
	Residential mortgage-backed securities		40,969		-97			103,488		-1,514		144,457		-1,611
	Municipal securities		26,905		-335			15,783		-463		42,688		-798
	Other residential mortgage-backed securities:
	Investment grade		—		—			6,985		-106		6,985		-106
	Corporate debt securities:
	Investment grade		—		—			90,401		-739		90,401		-739
	Non-investment grade		—		—			9,501		-2,023		9,501		-2,023
	Other securities		8,674		-326			—		—		8,674		-326
	Total available-for-sale investment securities		$	296,465	$	-1,319		$	315,486	$	-5,234	$	611,951	$	-6,553
			Less Than 12 Months					12 Months or More				Total
	($ in thousands)		Fair		Unrealized			Fair		Unrealized		Fair		Unrealized
			Value		Losses			Value		Losses		Value		Losses
	December 31, 2014
	Available-for-sale investment securities:
	U.S. Treasury securities		$	170,260	$	-266		$	163,800	$	-1,371	$	334,060	$	-1,637
	U.S. government agency and U.S. government sponsored enterprise debt securities		69,438		-504			124,104		-889		193,542		-1,393
	U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities:
	Commercial mortgage-backed securities		45,405		-257			16,169		-336		61,574		-593
	Residential mortgage-backed securities		81,927		-270			241,047		-3,808		322,974		-4,078
	Municipal securities		6,391		-26			61,107		-1,136		67,498		-1,162
	Other residential mortgage-backed securities:
	Investment grade		—		—			7,217		-135		7,217		-135
	Corporate debt securities:
	Investment grade		25,084		-12			90,098		-1,042		115,182		-1,054
	Non-investment grade		—		—			14,681		-3,200		14,681		-3,200
	Other securities		15,885		-716			—		—		15,885		-716
	Total available-for-sale investment securities		$	414,390	$	-2,051		$	718,223	$	-11,917	$	1,132,613	$	-13,968
Scheduled maturities of available-for-sale investment securities	The following table presents the scheduled maturities of available-for-sale investment securities as of March 31, 2015:
	($ in thousands)		Amortized Cost		Fair Value
	Due within one year		$	435,764	$	434,493
	Due after one year through five years		1,275,954		1,289,312
	Due after five years through ten years		311,367		311,157
	Due after ten years		794,762		806,123
	Total available-for-sale investment securities		$	2,817,847	$	2,841,085

DERIVATIVE_FINANCIAL_INSTRUMEN1

DERIVATIVE FINANCIAL INSTRUMENTS (Tables)	3 Months Ended
	Mar. 31, 2015
DERIVATIVE FINANCIAL INSTRUMENTS
Total notional and fair values of derivatives
			Fair Values of Derivative Instruments
			March 31, 2015								December 31, 2014
						Fair Value								Fair Value
	($ in thousands)		Notional			Derivative			Derivative		Notional			Derivative			Derivative
			Amount			Assets (1)			Liabilities (1)		Amount			Assets (1)			Liabilities (1)
	Derivatives designated as hedging instruments:
	Interest rate swaps on certificates of deposit		$	129,096		$	—		$	6,370	$	132,667		$	—		$	9,922
	Total derivatives designated as hedging instruments		$	129,096		$	—		$	6,370	$	132,667		$	—		$	9,922
	Derivatives not designated as hedging instruments:
	Foreign exchange options		$	50,000		$	3,683		$	—	$	85,614		$	6,136		$	—
	Embedded derivative liabilities		47,794			—			3,412		47,838			—			3,392
	Interest rate swaps and caps		5,204,760			66,060			66,914		4,858,391			41,534			41,779
	Foreign exchange contracts		1,037,967			13,340			13,080		680,629			8,123			9,171
	Total derivatives not designated as hedging instruments		$	6,340,521		$	83,083		$	83,406	$	5,672,472		$	55,793		$	54,342
		-1		Derivative assets are included in Other Assets. Derivative liabilities are included in Accrued Expenses and Other liabilities, and Deposits.
Net gains (losses) recognized in the Income Statement related to derivatives in fair value hedging relationships
			Three Months Ended
			March 31,
	($ in thousands)		2015			2014
	Gains (losses) recorded in interest expense
	Recognized on interest rate swaps		$	3,048		$	2,704
	Recognized on certificates of deposits		-2,695			(2,937		)
	Net amount recognized on fair value hedges (ineffective portion)		$	353		$	(233	)
	Reduction in interest expense recognized on interest rate swaps		$	920		$	1,824
Net gains (losses) recognized in the Income Statement related to derivatives not designated as hedging instruments
			Location in		Three Months Ended March 31,
			Consolidated
	($ in thousands)		Statements of Income		2015			2014
	Derivatives not designated as hedging instruments:
	Foreign exchange options		Foreign exchange income		$	199		$	(119	)
	Foreign exchange options with embedded derivatives		Other operating expense		-141			1
	Interest rate swaps and caps		Other operating income		-594			(936		)
	Foreign exchange contracts		Foreign exchange income		1,308			(2,129		)
	Total net gains (losses)				$	772		$	(3,183	)
Balance sheet offsetting of derivative assets and liabilities
	($ in thousands)		As of March 31, 2015
						Gross Amounts			Net Amounts of		Gross Amounts Not Offset on the
									Assets Presented		Consolidated Balance Sheet
	Assets		Gross Amounts			Offset on the			on the		Financial			Collateral			Net Amount
			of Recognized			Consolidated			Consolidated		Instruments			Received
			Assets			Balance Sheet			Balance Sheet
	Derivatives		$	13,564		$	—		$	13,564	$	-6,002	(1)	$	-6,480	(2)	$	1,082
									Net Amounts of		Gross Amounts Not Offset on the
									Liabilities		Consolidated Balance Sheet
	Liabilities		Gross Amounts			Gross Amounts			Presented		Financial			Collateral Posted			Net Amount
			of Recognized			Offset on the			on the		Instruments
			Liabilities			Consolidated			Consolidated
						Balance Sheet			Balance Sheet
	Derivatives		$	79,890		$	—		$	79,890	$	-6,002	(1)	$	-72,018	(3)	$	1,870
	($ in thousands)		As of December 31, 2014
						Gross Amounts			Net Amounts of		Gross Amounts Not Offset on the
									Assets Presented		Consolidated Balance Sheet
	Assets		Gross Amounts			Offset on the			on the		Financial			Collateral			Net Amount
			of Recognized			Consolidated			Consolidated		Instruments			Received
			Assets			Balance Sheet			Balance Sheet
	Derivatives		$	12,396		$	—		$	12,396	$	-5,725	(1)	$	-3,463	(2)	$	3,208
									Net Amounts of		Gross Amounts Not Offset on the
									Liabilities		Consolidated Balance Sheet
	Liabilities		Gross Amounts			Gross Amounts			Presented		Financial			Collateral Posted			Net Amount
			of Recognized			Offset on the			on the		Instruments
			Liabilities			Consolidated			Consolidated
						Balance Sheet			Balance Sheet
	Derivatives		$	56,505		$	—		$	56,505	$	-5,725	(1)	$	-49,951	(3)	$	829
		-1		Represents the netting of derivative receivable and payable balance for the same counterparty under enforceable master netting arrangements if the Company has elected to net.
		-2		Represents $6.5 million and $3.5 million of cash collateral received against derivative assets with the same counterparty that are subject to enforceable master netting arrangements as of March 31, 2015 and December 31, 2014, respectively.
		-3		Represents cash and securities pledged against derivative liabilities with the same counterparty that are subject to enforceable master netting arrangements. Includes approximately $19.0 million and $12.8 million of cash collateral posted as of March 31, 2015 and December 31, 2014, respectively.

LOANS_RECEIVABLE_AND_ALLOWANCE1

LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES (Tables)	3 Months Ended
	Mar. 31, 2015
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Schedule of the composition of Non-PCI and PCI loans
			March 31, 2015									December 31, 2014
	($ in thousands)		Non-PCI Loans			PCI Loans (1)			Total (1)			Non-PCI Loans			PCI Loans (1)			Total (1)
	CRE:
	Income Producing		$	5,802,931		$	652,246		$	6,455,177		$	5,568,046		$	688,013		$	6,256,059
	Construction		358,118			9,342			367,460			319,843			12,444			332,287
	Land		209,992			12,792			222,784			214,327			16,840			231,167
	Total CRE		6,371,041			674,380			7,045,421			6,102,216			717,297			6,819,513
	C&I:
	Commercial business		6,799,149			72,301			6,871,450			7,097,853			83,336			7,181,189
	Trade finance		844,090			5,224			849,314			889,728			6,284			896,012
	Total C&I		7,643,239			77,525			7,720,764			7,987,581			89,620			8,077,201
	Residential:
	Single-family		3,298,775			214,019			3,512,794			3,647,262			219,519			3,866,781
	Multifamily		1,240,359			244,066			1,484,425			1,184,017			265,891			1,449,908
	Total residential		4,539,134			458,085			4,997,219			4,831,279			485,410			5,316,689
	Consumer		1,584,168			27,996			1,612,164			1,483,956			29,786			1,513,742
	Total loans		$	20,137,582		$	1,237,986		$	21,375,568		$	20,405,032		$	1,322,113		$	21,727,145
	Unearned fees, premiums, and discounts, net		-899			—			-899			2,804			—			2,804
	Allowance for loan losses		-257,095			-643			-257,738			-260,965			-714			-261,679
	Loans, net		$	19,879,588		$	1,237,343		$	21,116,931		$	20,146,871		$	1,321,399		$	21,468,270
		-1		Loans net of ASC 310-30 discount.
Summary of credit risk rating by portfolio segment
	($ in thousands)		Pass/Watch			Special			Substandard			Doubtful			Loss			Total Non-PCI
						Mention												Loans
	March 31, 2015
	CRE:
	Income producing		$	5,488,698		$	56,245		$	257,988		$	—		$	—		$	5,802,931
	Construction		353,799			703			3,616			—			—			358,118
	Land		187,364			5,701			16,927			—			—			209,992
	C&I:
	Commercial business		6,573,081			93,302			132,286			426			54			6,799,149
	Trade finance		788,864			19,726			35,500			—			—			844,090
	Residential:
	Single-family		3,277,085			3,595			18,095			—			—			3,298,775
	Multifamily		1,162,798			4,906			72,655			—			—			1,240,359
	Consumer		1,581,116			336			2,716			—			—			1,584,168
	Total		$	19,412,805		$	184,514		$	539,783		$	426		$	54		$	20,137,582
	($ in thousands)		Pass/Watch			Special			Substandard			Doubtful			Loss			Total Non-PCI
						Mention												Loans
	December 31, 2014
	CRE:
	Income producing		$	5,243,640		$	54,673		$	269,733		$	—		$	—		$	5,568,046
	Construction		310,259			11			9,573			—			—			319,843
	Land		185,220			5,701			23,406			—			—			214,327
	C&I:
	Commercial business		6,836,914			130,319			130,032			533			55			7,097,853
	Trade finance		845,889			13,031			30,808			—			—			889,728
	Residential:
	Single-family		3,627,491			3,143			16,628			—			—			3,647,262
	Multifamily		1,095,982			5,124			82,911			—			—			1,184,017
	Consumer		1,480,208			1,005			2,743			—			—			1,483,956
	Total		$	19,625,603		$	213,007		$	565,834		$	533		$	55		$	20,405,032
	($ in thousands)		Pass/Watch			Special			Substandard			Doubtful			Total PCI Loans
						Mention
	March 31, 2015
	CRE:
	Income producing		$	517,827		$	6,164		$	128,255		$	—		$	652,246
	Construction		585			1,739			7,018			—			9,342
	Land		5,080			5,433			2,279			—			12,792
	C&I:
	Commercial business		62,858			997			8,446			—			72,301
	Trade finance		3,535			—			1,689			—			5,224
	Residential:
	Single-family		208,238			745			5,036			—			214,019
	Multifamily		211,060			—			33,006			—			244,066
	Consumer		27,330			115			551			—			27,996
	Total (1)		$	1,036,513		$	15,193		$	186,280		$	—		$	1,237,986
		-1		Loans net of ASC 310-30 discount.
	($ in thousands)		Pass/Watch			Special			Substandard			Doubtful			Total PCI Loans
						Mention
	December 31, 2014
	CRE:
	Income producing		$	534,015		$	9,960		$	144,038		$	—		$	688,013
	Construction		589			1,744			10,111			—			12,444
	Land		7,012			5,391			4,437			—			16,840
	C&I:
	Commercial business		70,586			1,103			11,647			—			83,336
	Trade finance		4,620			—			1,664			—			6,284
	Residential:
	Single-family		213,829			374			5,316			—			219,519
	Multifamily		230,049			—			35,842			—			265,891
	Consumer		29,026			116			644			—			29,786
	Total (1)		$	1,089,726		$	18,688		$	213,699		$	—		$	1,322,113
		-1		Loans net of ASC 310-30 discount.
Schedule of aging analysis on non-PCI loans
	($ in thousands)		Accruing			Accruing			Total			Nonaccrual			Nonaccrual			Total			Current			Total Non-PCI
			Loans			Loans			Accruing			Loans Less			Loans			Nonaccrual			Accruing			Loans
			30-59 Days			60-89 Days			Past Due			Than 90 Days			90 or More			Loans			Loans
			Past Due			Past Due			Loans			Past Due			Days Past Due
	March 31, 2015
	CRE:
	Income producing		$	9,699		$	1,860		$	11,559		$	18,739		$	11,011		$	29,750		$	5,761,622		$	5,802,931
	Construction		—			—			—			14			917			931			357,187			358,118
	Land		—			—			—			214			2,386			2,600			207,392			209,992
	C&I:
	Commercial business		11,227			902			12,129			5,988			25,436			31,424			6,755,596			6,799,149
	Trade finance		—			600			600			37			—			37			843,453			844,090
	Residential:
	Single-family		7,239			2,402			9,641			4,731			4,406			9,137			3,279,997			3,298,775
	Multifamily		2,611			376			2,987			12,216			1,145			13,361			1,224,011			1,240,359
	Consumer		883			2			885			166			374			540			1,582,743			1,584,168
	Total		$	31,659		$	6,142		$	37,801		$	42,105		$	45,675		$	87,780		$	20,012,001		$	20,137,582
	Unearned fees, premiums and discounts, net																							-899
	Total recorded investment in non-PCI loans																							$	20,136,683
	($ in thousands)		Accruing			Accruing			Total			Nonaccrual			Nonaccrual			Total			Current			Total Non-PCI
			Loans			Loans			Accruing			Loans Less			Loans			Nonaccrual			Accruing			Loans
			30-59 Days			60-89 Days			Past Due			Than 90 Days			90 or More			Loans			Loans
			Past Due			Past Due			Loans			Past Due			Days Past Due
	December 31, 2014
	CRE:
	Income producing		$	14,171		$	3,593		$	17,764		$	19,348		$	9,165		$	28,513		$	5,521,769		$	5,568,046
	Construction		—			—			—			15			6,898			6,913			312,930			319,843
	Land		—			—			—			221			2,502			2,723			211,604			214,327
	C&I:
	Commercial business		3,187			4,361			7,548			6,623			21,813			28,436			7,061,869			7,097,853
	Trade finance		—			—			—			73			292			365			889,363			889,728
	Residential:
	Single-family		6,381			1,294			7,675			2,861			5,764			8,625			3,630,962			3,647,262
	Multifamily		4,425			507			4,932			12,460			8,359			20,819			1,158,266			1,184,017
	Consumer		2,154			162			2,316			169			3,699			3,868			1,477,772			1,483,956
	Total		$	30,318		$	9,917		$	40,235		$	41,770		$	58,492		$	100,262		$	20,264,535		$	20,405,032
	Unearned fees, premiums and discounts, net																							2,804
	Total recorded investment in non-PCI loans																							$	20,407,836
Summary of additions to non-PCI troubled debt restructurings
			Loans Modified as TDRs During the Three Months Ended March 31,
			2015											2014
	($ in thousands)		Number		Pre-Modification			Post-Modification			Financial			Number		Pre-Modification			Post-Modification			Financial
			of		Outstanding			Outstanding			Impact (2)			of		Outstanding			Outstanding			Impact (2)
			Contracts		Recorded			Recorded						Contracts		Recorded			Recorded
					Investment			Investment (1)								Investment			Investment (1)
	CRE:
	Income producing		1		$	828		$	833		$	—		—		$	—		$	—		$	—
	C&I:
	Commercial business		1		$	167		$	164		$	-32		5		$	1,721		$	1,691		$	1,248
	Residential:
	Single-family		1		$	281		$	281		$	-2		3		$	5,823		$	5,804		$	—
		-1		Includes subsequent payments after modification and reflects the balance as of March 31, 2015 and 2014.
		-2		The financial impact includes charge-offs and specific reserves recorded at modification date.
Summary of non-PCI impaired loans
	($ in thousands)		Unpaid			Recorded			Recorded			Total			Related
			Principal			Investment			Investment			Recorded			Allowance
			Balance			With No			With			Investment
						Allowance			Allowance
	March 31, 2015
	CRE:
	Income producing		$	50,389		$	28,186		$	15,001		$	43,187		$	1,399
	Construction		916			916			—			916			—
	Land		8,234			2,826			543			3,369			175
	C&I:
	Commercial business		43,289			10,815			28,186			39,001			17,886
	Trade finance		223			—			216			216			20
	Residential:
	Single-family		16,767			7,007			8,404			15,411			413
	Multifamily		29,262			20,200			6,594			26,794			279
	Consumer		1,258			1,150			108			1,258			1
	Total		$	150,338		$	71,100		$	59,052		$	130,152		$	20,173
	($ in thousands)		Unpaid			Recorded			Recorded			Total			Related
			Principal			Investment			Investment			Recorded			Allowance
			Balance			With No			With			Investment
						Allowance			Allowance
	December 31, 2014
	CRE:
	Income producing		$	57,805		$	34,399		$	15,646		$	50,045		$	1,581
	Construction		6,888			6,888			—			6,888			—
	Land		13,291			2,838			5,622			8,460			1,906
	C&I:
	Commercial business		42,396			10,552			25,717			36,269			15,174
	Trade finance		280			—			274			274			28
	Residential:
	Single-family		17,838			5,137			11,398			16,535			461
	Multifamily		37,624			21,500			12,890			34,390			313
	Consumer		1,259			1,151			108			1,259			1
	Total		$	177,381		$	82,465		$	71,655		$	154,120		$	19,464
Schedule of average recorded investment and amount of interest income on non-PCI impaired loans
			Three Months Ended March 31,
			2015						2014
	($ in thousands)		Average			Recognized			Average			Recognized
			Recorded			Interest			Recorded			Interest
			Investment			Income (1)			Investment			Income (1)
	CRE:
	Income producing		$	44,195		$	141		$	67,153		$	325
	Construction		3,902			—			6,888			—
	Land		3,438			10			12,227			121
	C&I:
	Commercial business		39,310			202			43,726			207
	Trade finance		245			3			637			4
	Residential:
	Single-family		15,423			68			17,100			50
	Multifamily		26,987			203			36,369			205
	Consumer		1,258			12			2,835			1
	Total impaired non-PCI loans		$	134,758		$	639		$	186,935		$	913
		-1		Includes interest recognized on accruing non-PCI TDRs. Interest payments received on nonaccrual non-PCI loans are generally reflected as a reduction of principal and not as interest income.
Summary of the activity in the allowance for loan losses
			Non-PCI Loans
	($ in thousands)		CRE				C&I			Residential			Consumer			Unallocated				Total			PCI Loans			Total
	Three Months Ended March 31, 2015
	Beginning balance		$		72,263		$	134,598		$	43,856		$	10,248		$	—			$	260,965		$	714		$		261,679
	(Reversal of) provision for loans losses		-2,333				5,378			-1,571			664			2,920				5,058			-71			4,987
	Provision allocation for unfunded loan commitments and letters of credit		—				—			—			—			-2,920				-2,920			—			-2,920
	Charge-offs		-1,002				-6,589			-746			-463			—				-8,800			—			-8,800
	Recoveries		812				527			1,451			2			—				2,792			—			2,792
	Net (charge-offs)/recoveries		-190				-6,062			705			-461			—				-6,008			—			-6,008
	Ending balance		$		69,740		$	133,914		$	42,990		$	10,451		$	—			$	257,095		$	643		$		257,738
	Ending balance allocated to:
	Individually evaluated for impairment		$		1,574		$	17,906		$	692		$	1		$	—			$	20,173		$	—		$		20,173
	Collectively evaluated for impairment		68,166				116,008			42,298			10,450			—				236,922			—			236,922
	Acquired with deteriorated credit quality		—				—			—			—			—				—			643			643
	Ending balance		$		69,740		$	133,914		$	42,990		$	10,451		$	—			$	257,095		$	643		$		257,738
			Non-PCI Loans
	($ in thousands)		CRE				C&I			Residential			Consumer			Unallocated				Total			PCI Loans			Total
	Three Months Ended March 31, 2014
	Beginning balance		$	70,154			$	115,184		$	50,716		$	11,352		$		—		$	247,406		$		2,269	$	249,675
	(Reversal of) provision for loans losses		-7,036				16,592			-2,575			-196			215				7,000			-67			6,933
	Provision allocation for unfunded loan commitments and letters of credit		—				—			—			—			-215				-215			—			-215
	Charge-offs		-319				-5,531			-283			-3			—				-6,136			—			-6,136
	Recoveries		828				911			137			3			—				1,879			—			1,879
	Net recoveries/(charge-offs)		509				-4,620			-146			—			—				-4,257			—			-4,257
	Ending balance		$	63,627			$	127,156		$	47,995		$	11,156		$		—		$	249,934		$		2,202	$	252,136
	Ending balance allocated to:
	Individually evaluated for impairment		$	8,375			$	16,490		$	1,853		$	—		$		—		$	26,718		$		—	$	26,718
	Collectively evaluated for impairment		55,252				110,666			46,142			11,156			—				223,216			—			223,216
	Acquired with deteriorated credit quality		—				—			—			—			—				—			2,202			2,202
	Ending balance		$	63,627			$	127,156		$	47,995		$	11,156		$		—		$	249,934		$		2,202	$	252,136
Recorded investment in total loans receivable by portfolio segment, disaggregated by impairment methodology
	($ in thousands)		CRE			C&I			Residential			Consumer			Total
	As of March 31, 2015
	Individually evaluated for impairment		$	47,472		$	39,217		$	42,205		$	1,258		$	130,152
	Collectively evaluated for impairment		6,323,569			7,604,022			4,496,929			1,582,910			20,007,430
	Acquired with deteriorated credit quality (1)		674,380			77,525			458,085			27,996			1,237,986
	Ending Balance		$	7,045,421		$	7,720,764		$	4,997,219		$	1,612,164		$	21,375,568
		-1		Loans net of ASC 310-30 discount.
	($ in thousands)		CRE			C&I			Residential			Consumer			Total
	As of December 31, 2014
	Individually evaluated for impairment		$	65,393		$	36,543		$	50,925		$	1,259		$	154,120
	Collectively evaluated for impairment		6,036,823			7,951,038			4,780,354			1,482,697			20,250,912
	Acquired with deteriorated credit quality (1)		717,297			89,620			485,410			29,786			1,322,113
	Ending Balance		$	6,819,513		$	8,077,201		$	5,316,689		$	1,513,742		$	21,727,145
		-1		Loans net of ASC 310-30 discount.
Summary of changes in the accretable yield for the PCI loans			Three Months Ended
			March 31,
	($ in thousands)		2015			2014
	Beginning balance		$	311,688		$	461,545
	Additions		—			6,745
	Accretion		-30,569			(61,946		)
	Changes in expected cash flows		12,036			24,112
	Ending balance		$	293,155		$	430,456
Summary of the FDIC indemnification asset/net payable to the FDIC
			Three Months Ended
			March 31,
	($ in thousands)		2015			2014
	Beginning balance		$	-96,106		$	74,708
	Amortization		-1,542			(28,490		)
	Reductions (1)		-649			(11,842		)
	Estimate of FDIC repayment (2)		-3,114			(6,824		)
	Ending balance		$	-101,411		$	27,552
		-1		Reductions relate to charge-offs, partial prepayments, loan payoffs and loan sales which result in a corresponding reduction of the indemnification asset.
		-2		This represents the change in the calculated estimate the Company will be required to pay the FDIC at the end of the FDIC shared-loss agreements, due to lower thresholds of losses.

INVESTMENTS_IN_QUALIFIED_AFFOR1

INVESTMENTS IN QUALIFIED AFFORDABLE HOUSING PARTNERSHIPS, NET, TAX CREDIT AND OTHER INVESTMENTS (Tables)	3 Months Ended
	Mar. 31, 2015
INVESTMENTS IN QUALIFIED AFFORDABLE HOUSING PARTNERSHIPS, NET, TAX CREDIT AND OTHER INVESTMENTS
Summary of the impact of new accounting guidance
		December 31, 2014
	($ in thousands)	As Previously		As Revised
		Reported
	Consolidated Balance Sheet:
	Investment in qualified affordable housing partnerships, net	$	178,652	$	178,962
	Other assets —  Deferred tax assets	$	384,367	$	389,601
	Retained earnings	$	1,598,598	$	1,604,141
		Three Months Ended
		March 31, 2014
	($ in thousands)	As Previously		As Revised
		Reported
	Consolidated Statement of Income:
	Noninterest expense — Amortization of tax credit and other investments	$	5,964	$	1,492
	Income before taxes	$	111,690	$	116,163
	Provision for income taxes	$	34,949	$	41,992
	Net income	$	76,741	$	74,171
	Earnings per share
	Basic	$	0.54	$	0.52
	Diluted	$	0.54	$	0.52
Schedule of investments in qualified affordable housing partnerships and related unfunded commitments	($ in thousands)	March 31, 2015		December 31, 2014
	Investment in qualified affordable housing partnerships, net	$	182,719	$	178,962
	Accrued expenses and other liabilities — Unfunded commitments	$	50,884	$	43,311
Schedule of other information related to investments in qualified affordable housing partnerships		Three Months Ended March 31,
	($ in thousands)	2015		2014
	Tax credits and other tax benefits recognized	$	8,775	$	7,792
	Amortization expense included in provision for income taxes	$	6,244	$	5,357

GOODWILL_AND_OTHER_INTANGIBLE_1

GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)	3 Months Ended
	Mar. 31, 2015
GOODWILL AND OTHER INTANGIBLE ASSETS
Estimated future amortization expense of premiums on acquired deposits	Estimated Amortization Expense of Premiums on Acquired Deposits	Amount
		($ in thousands)
	Nine months ending December 31, 2015	$	6,842
	Year ending December 31, 2016	8,086
	Year ending December 31, 2017	6,935
	Year ending December 31, 2018	5,883
	Year ending December 31, 2019	4,864
	Thereafter	10,307
	Total	$	42,917

STOCKHOLDERS_EQUITY_AND_EARNIN1

STOCKHOLDERS' EQUITY AND EARNINGS PER SHARE (Tables)	3 Months Ended
	Mar. 31, 2015
STOCKHOLDERS' EQUITY AND EARNINGS PER SHARE
Earnings per share calculations
			Three Months Ended March 31, 2015
	($ in thousands, except per share data)		Net Income			Number of Shares			Per Share Amounts
	Net income		$	100,027
	Less:
	Earnings allocated to participating securities		(3		)
	Basic EPS — income allocated to common stockholders		$	100,024		143,655			$	0.7
	Effect of dilutive securities:
	Stock options		—			6
	Restricted stock units		106			533
	Warrants		—			155
	Diluted EPS — income allocated to common stockholders		$	100,130		144,349			$	0.69
			Three Months Ended March 31, 2014
	($ in thousands, except per share data)		Net Income			Number of Shares			Per Share Amounts
	Net income (1)		$	74,171
	Less:
	Earnings allocated to participating securities		(160		)
	Basic EPS — income allocated to common stockholders (1)		$	74,011		141,962			$	0.52
	Effect of dilutive securities:
	Stock options		—			79
	Restricted stock units		80			447
	Warrants		—			144
	Diluted EPS — income allocated to common stockholders(1)		$	74,091		142,632			$	0.52
		-1		Prior periods were restated to reflect the retrospective application of adopting the new accounting guidance related to the Company’s investments in qualified affordable housing projects ASU 2014-01. See note 10 of the Notes to Consolidated Financial Statements for additional information.
Shares excluded from the calculation of diluted EPS
			Three Months Ended
			March 31,
	(In thousands)		2015		2014
	Stock options		—		81
	Restricted stock units		170		168
Schedule of accumulated other comprehensive income (loss) balances			Three Months Ended March 31,
			2015										2014
	($ in thousands)		Available-for-Sale			Other				Accumulated			Available-for-Sale			Other			Accumulated
			Investment			Investments				Other			Investment			Investments			Other
			Securities							Comprehensive			Securities						Comprehensive
										Income									(Loss) Income
	Balance, beginning of the period		$	4,176		$	61			$	4,237		$	(30,538	)	$	79		$	(30,459	)
	Net unrealized gains (losses) arising during period		11,879			(7		)		11,872			15,422			(17		)	15,405
	Less: reclassification adjustment for gains included in net income		(2,554		)	—				(2,554		)	(1,983		)	—			(1,983		)
	Net unrealized gains (losses)		9,325			(7		)		9,318			13,439			(17		)	13,422
	Balance, end of the period		$	13,501		$	54			$	13,555		$	(17,099	)	$	62		$	(17,037	)
Schedule of components of other comprehensive income (loss), reclassifications to net income by income statement line item and the related tax effects
			Three Months Ended March 31,
			2015										2014
	($ in thousands)		Before-Tax			Tax				Net-of-Tax			Before-Tax			Tax			Net-of-Tax
			Amount			Expense				Amount			Amount			Expense			Amount
						or Benefit										or Benefit
	Unrealized gains on available-for-sale investment securities :
	Net unrealized gains arising during period		$	20,482		$	(8,603	)		$	11,879		$	26,590		$	(11,168	)	$	15,422
	Less: reclassification adjustment for gains included in net income (1)		(4,404		)	1,850				(2,554		)	(3,418		)	1,435			(1,983		)
	Net unrealized gains		16,078			(6,753		)		9,325			23,172			(9,733		)	13,439
	Unrealized losses on other investments:
	Net unrealized losses arising during period		(12		)	5				(7		)	(29		)	12			(17		)
	Less: reclassification adjustment for (gains) losses included in income		—			—				—			—			—			—
	Net unrealized losses		(12		)	5				(7		)	(29		)	12			(17		)
	Other comprehensive income		$	16,066		$	(6,748	)		$	9,318		$	23,143		$	(9,721	)	$	13,422
		-1		The pretax amount is reported in net gains on sales of available-for-sale investment securities in the consolidated statements of income.

BUSINESS_SEGMENTS_Tables

BUSINESS SEGMENTS (Tables)	3 Months Ended
	Mar. 31, 2015
BUSINESS SEGMENTS
Operating results and key financial measures for operating segments
			Three Months Ended March 31, 2015
	($ in thousands)		Retail		Commercial		Other		Total
			Banking		Banking
	Interest income		$	87,446	$	158,786	$	17,029	$	263,261
	Charge for funds used		-23,298		-37,351		-9,445		(70,094		)
	Interest spread on funds used		64,148		121,435		7,584		193,167
	Interest expense		-12,224		-4,263		-11,057		(27,544		)
	Credit on funds provided		57,668		8,016		4,410		70,094
	Interest spread on funds provided		45,444		3,753		-6,647		42,550
	Net interest income		$	109,592	$	125,188	$	937	$	235,717
	Provision for loan losses		$	731	$	4,256	$	—	$	4,987
	Depreciation, amortization and accretion (1)		$	1,682	$	-10,477	$	12,922	$	4,127
	Goodwill		$	357,207	$	112,226	$	—	$	469,433
	Segment pre-tax profit		$	52,935	$	93,175	$	716	$	146,826
	Segment assets		$	7,540,501	$	15,491,368	$	6,874,966	$	29,906,835
			Three Months Ended March 31, 2014
	($ in thousands)		Retail		Commercial		Other		Total
			Banking		Banking
	Interest income		$	98,724	$	169,076	$	18,373	$	286,173
	Charge for funds used		-16,045		-21,328		-23,123		(60,496		)
	Interest spread on funds used		82,679		147,748		-4,750		225,677
	Interest expense		-11,711		-3,280		-13,216		(28,207		)
	Credit on funds provided		48,193		8,436		3,867		60,496
	Interest spread on funds provided		36,482		5,156		-9,349		32,289
	Net interest income (loss)		$	119,161	$	152,904	$	-14,099	$	257,966
	Provision for loan losses		$	2,652	$	4,281	$	—	$	6,933
	Depreciation, amortization and accretion (1) (2)		$	2,571	$	-3,328	$	9,821	$	9,064
	Goodwill		$	354,163	$	104,304	$	—	$	458,467
	Segment pre-tax profit (loss) (2)		$	52,170	$	86,931	$	-22,938	$	116,163
	Segment assets (2)		$	7,877,996	$	13,661,149	$	5,861,459	$	27,400,604
		-1		Includes amortization and accretion related to the FDIC indemnification asset.
		-2		Prior periods were restated to reflect the retrospective application of adopting the new accounting guidance related to the Company’s investments in qualified affordable housing projects ASU 2014-01. See Note 10 of the Notes to Consolidated Financial Statements for additional information.

BASIS_OF_PRESENTATION_Details

BASIS OF PRESENTATION (Details)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
	entity	entity
	trust
BASIS OF PRESENTATION
Number of wholly owned subsidiaries that are statutory business trusts ("the Trusts")	6
Number of acquisitions	0	1

BUSINESS_COMBINATION_Details

BUSINESS COMBINATION (Details) (USD $)	3 Months Ended		0 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Jan. 17, 2014	Dec. 31, 2014
	entity	entity
Business combination
Number of business combinations	0	1
Purchase consideration
Consideration transferred in the acquisition (in shares)		5,583,093
Issuance of 5,583,093 shares pursuant to MetroCorp acquisition		$190,830,000
Assets acquired and liabilities assumed
Goodwill recorded as a result of the business combination	469,433,000	458,467,000		469,433,000
MetroCorp
Purchase consideration
Percentage of purchase consideration satisfied in stock			66.67%
Percentage of purchase consideration satisfied in cash			33.33%
Fair value of the consideration transferred			291,400,000
Consideration transferred in the acquisition (in shares)			5,583,093
Issuance of 5,583,093 shares pursuant to MetroCorp acquisition			190,800,000
Consideration transferred in cash			89,400,000
Additional cash given to acquiree's stock option holders as part of consideration transferred			2,400,000
Fair value of warrants assumed as part of consideration transferred			8,800,000
Assets acquired and liabilities assumed
Fair value of assets acquired			1,700,000,000
Fair value of liabilities acquired			1,410,000,000
Goodwill recorded as a result of the business combination			121,000,000	132,000,000
MetroCorp | Adjustments
Assets acquired and liabilities assumed
Deferred tax assets				-10,300,000
Bank owned life insurance				($700,000)

FAIR_VALUE_MEASUREMENT_AND_FAI2

FAIR VALUE MEASUREMENT AND FAIR VALUE OF FINANCIAL INSTRUMENTS (Details) (USD $)	Mar. 31, 2015		Dec. 31, 2014
In Thousands, unless otherwise specified
Available-for-sale investment securities
Total available-for-sale investment securities	$2,841,085		$2,626,365
U.S. Treasury securities
Available-for-sale investment securities
Total available-for-sale investment securities	1,172,226		873,435
U.S. government agency and U.S. government sponsored enterprise debt securities
Available-for-sale investment securities
Total available-for-sale investment securities	411,966		311,024
U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities - Commercial mortgage-backed securities
Available-for-sale investment securities
Total available-for-sale investment securities	95,235		141,420
U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities - Residential mortgage-backed securities
Available-for-sale investment securities
Total available-for-sale investment securities	727,356		791,088
Municipal securities
Available-for-sale investment securities
Total available-for-sale investment securities	191,246		250,448
Other residential mortgage-backed securities | Investment grade
Available-for-sale investment securities
Total available-for-sale investment securities	51,501	[1]	53,918	[1]
Other commercial mortgage-backed securities | Investment grade
Available-for-sale investment securities
Total available-for-sale investment securities			34,053	[1]
Corporate debt securities | Investment grade
Available-for-sale investment securities
Total available-for-sale investment securities	140,401	[1]	115,182	[1]
Corporate debt securities | Non-investment grade
Available-for-sale investment securities
Total available-for-sale investment securities	9,501	[1]	14,681	[1]
Other securities
Available-for-sale investment securities
Total available-for-sale investment securities	41,653		41,116
Fair Value, Measurements, Recurring
Available-for-sale investment securities
Total available-for-sale investment securities	2,841,085		2,626,365
Fair Value, Measurements, Recurring | Foreign exchange options
Derivative
Derivative assets	3,683		6,136
Fair Value, Measurements, Recurring | Interest rate swaps on certificates of deposits
Derivative
Derivative liabilities	-6,370		-9,922
Fair Value, Measurements, Recurring | Interest rate swaps and caps
Derivative
Derivative assets	66,060		41,534
Derivative liabilities	-66,914		-41,779
Fair Value, Measurements, Recurring | Foreign exchange contracts
Derivative
Derivative assets	13,340		8,123
Derivative liabilities	-13,080		-9,171
Fair Value, Measurements, Recurring | Embedded derivative liabilities
Derivative
Derivative liabilities	-3,412		-3,392
Fair Value, Measurements, Recurring | U.S. Treasury securities
Available-for-sale investment securities
Total available-for-sale investment securities	1,172,226		873,435
Fair Value, Measurements, Recurring | U.S. government agency and U.S. government sponsored enterprise debt securities
Available-for-sale investment securities
Total available-for-sale investment securities	411,966		311,024
Fair Value, Measurements, Recurring | U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities - Commercial mortgage-backed securities
Available-for-sale investment securities
Total available-for-sale investment securities	95,235		141,420
Fair Value, Measurements, Recurring | U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities - Residential mortgage-backed securities
Available-for-sale investment securities
Total available-for-sale investment securities	727,356		791,088
Fair Value, Measurements, Recurring | Municipal securities
Available-for-sale investment securities
Total available-for-sale investment securities	191,246		250,448
Fair Value, Measurements, Recurring | Other residential mortgage-backed securities | Investment grade
Available-for-sale investment securities
Total available-for-sale investment securities	51,501		53,918
Fair Value, Measurements, Recurring | Other commercial mortgage-backed securities | Investment grade
Available-for-sale investment securities
Total available-for-sale investment securities			34,053
Fair Value, Measurements, Recurring | Corporate debt securities | Investment grade
Available-for-sale investment securities
Total available-for-sale investment securities	140,401		115,182
Fair Value, Measurements, Recurring | Corporate debt securities | Non-investment grade
Available-for-sale investment securities
Total available-for-sale investment securities	9,501		14,681
Fair Value, Measurements, Recurring | Other securities
Available-for-sale investment securities
Total available-for-sale investment securities	41,653		41,116
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Available-for-sale investment securities
Total available-for-sale investment securities	1,204,703		905,540
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. Treasury securities
Available-for-sale investment securities
Total available-for-sale investment securities	1,172,226		873,435
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other securities
Available-for-sale investment securities
Total available-for-sale investment securities	32,477		32,105
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Available-for-sale investment securities
Total available-for-sale investment securities	1,636,382		1,714,297
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Foreign exchange options
Derivative
Derivative assets	3,683		6,136
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Interest rate swaps on certificates of deposits
Derivative
Derivative liabilities	-6,370		-9,922
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Interest rate swaps and caps
Derivative
Derivative assets	66,060		41,534
Derivative liabilities	-66,914		-41,779
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Foreign exchange contracts
Derivative
Derivative assets	13,340		8,123
Derivative liabilities	-13,080		-9,171
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | U.S. government agency and U.S. government sponsored enterprise debt securities
Available-for-sale investment securities
Total available-for-sale investment securities	411,966		311,024
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities - Commercial mortgage-backed securities
Available-for-sale investment securities
Total available-for-sale investment securities	95,235		141,420
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities - Residential mortgage-backed securities
Available-for-sale investment securities
Total available-for-sale investment securities	727,356		791,088
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Municipal securities
Available-for-sale investment securities
Total available-for-sale investment securities	191,246		250,448
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Other residential mortgage-backed securities | Investment grade
Available-for-sale investment securities
Total available-for-sale investment securities	51,501		53,918
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Other commercial mortgage-backed securities | Investment grade
Available-for-sale investment securities
Total available-for-sale investment securities			34,053
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Corporate debt securities | Investment grade
Available-for-sale investment securities
Total available-for-sale investment securities	140,401		115,182
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Corporate debt securities | Non-investment grade
Available-for-sale investment securities
Total available-for-sale investment securities	9,501		8,153
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Other securities
Available-for-sale investment securities
Total available-for-sale investment securities	9,176		9,011
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)
Available-for-sale investment securities
Total available-for-sale investment securities			6,528
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Embedded derivative liabilities
Derivative
Derivative liabilities	-3,412		-3,392
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Corporate debt securities | Non-investment grade
Available-for-sale investment securities
Total available-for-sale investment securities			$6,528
[1]	Available-for-sale investment securities rated BBB- or higher by S&P or Baa3 or higher by Moody's are considered investment grade. Conversely, available-for-sale investment securities rated lower than BBB- by S&P or lower than Baa3 by Moody's are considered non-investment grade.

FAIR_VALUE_MEASUREMENT_AND_FAI3

FAIR VALUE MEASUREMENT AND FAIR VALUE OF FINANCIAL INSTRUMENTS (Details 2) (Fair Value, Measurements, Recurring, USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015		Mar. 31, 2014
Embedded derivative liabilities
Reconciliation of the beginning and ending balances for major liability categories measured at fair value on a recurring basis using significant unobservable inputs (Level 3)
Beginning balance	($3,392)		($3,655)
Total gains or (losses) for the period:
Included in earnings	-20	[1]	257	[1]
Ending balance	-3,412		-3,398
Changes in unrealized losses included in earnings relating to assets and liabilities held at period-end	20		-257
Corporate debt securities | Non-investment grade
Reconciliation of the beginning and ending balances for major asset categories measured at fair value on a recurring basis using significant unobservable inputs (Level 3)
Beginning balance	6,528		6,371
Total gains or (losses) for the period:
Included in earnings	960	[1]
Included in other comprehensive income (unrealized)	922	[2]	434	[2]
Purchases, issues, sales, settlements:
Sales	-7,219
Settlements	-98		-88
Transfers in and/or out of Level 3	-1,093
Ending balance			$6,717
[1]	Realized gains or losses of corporate debt securities and embedded derivative liabilities are included in net gains on sales of investment securities and other operating expense, respectively, in the consolidated statements of income.
[2]	Unrealized gains or losses on available-for-sale investment securities are reported in other comprehensive income, net of tax, in the consolidated statements of comprehensive income.

FAIR_VALUE_MEASUREMENT_AND_FAI4

FAIR VALUE MEASUREMENT AND FAIR VALUE OF FINANCIAL INSTRUMENTS (Details 3) (USD $)	3 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015		Dec. 31, 2014
Quantitative information
Available-for-sale investment securities	2,841,085		2,626,365
Corporate debt securities | Non-investment grade
Quantitative information
Available-for-sale investment securities	9,501	[1]	14,681	[1]
Fair Value, Measurements, Recurring
Quantitative information
Available-for-sale investment securities	2,841,085		2,626,365
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)
Quantitative information
Available-for-sale investment securities			6,528
Fair Value, Measurements, Recurring | Embedded derivative liabilities | Discounted cash flow | Significant Unobservable Inputs (Level 3)
Quantitative information
Derivative liabilities	-3,412		-3,392
Fair Value, Measurements, Recurring | Embedded derivative liabilities | Discounted cash flow | Significant Unobservable Inputs (Level 3) | Minimum
Quantitative information
Credit risk	0.03%		0.12%
Fair Value, Measurements, Recurring | Embedded derivative liabilities | Discounted cash flow | Significant Unobservable Inputs (Level 3) | Maximum
Quantitative information
Credit risk	0.07%		0.14%
Fair Value, Measurements, Recurring | Embedded derivative liabilities | Discounted cash flow | Significant Unobservable Inputs (Level 3) | Weighted Average
Quantitative information
Credit risk	0.06%		0.13%
Fair Value, Measurements, Recurring | Corporate debt securities | Non-investment grade
Quantitative information
Available-for-sale investment securities	9,501		14,681
Fair Value, Measurements, Recurring | Corporate debt securities | Non-investment grade | Significant Unobservable Inputs (Level 3)
Quantitative information
Available-for-sale investment securities			6,528
Fair Value, Measurements, Recurring | Corporate debt securities | Non-investment grade | Discounted cash flow | Significant Unobservable Inputs (Level 3)
Quantitative information
Available-for-sale investment securities			6,528
Fair Value, Measurements, Recurring | Corporate debt securities | Non-investment grade | Discounted cash flow | Significant Unobservable Inputs (Level 3) | Minimum
Quantitative information
Constant prepayment rate			0.00%
Constant default rate			0.75%
Discount margin			4.50%
Fair Value, Measurements, Recurring | Corporate debt securities | Non-investment grade | Discounted cash flow | Significant Unobservable Inputs (Level 3) | Maximum
Quantitative information
Constant prepayment rate			1.00%
Constant default rate			1.20%
Discount margin			7.50%
Fair Value, Measurements, Recurring | Corporate debt securities | Non-investment grade | Discounted cash flow | Significant Unobservable Inputs (Level 3) | Weighted Average
Quantitative information
Constant prepayment rate			0.73%
Constant default rate			0.87%
Loss severity			85.00%
Discount margin			6.94%
[1]	Available-for-sale investment securities rated BBB- or higher by S&P or Baa3 or higher by Moody's are considered investment grade. Conversely, available-for-sale investment securities rated lower than BBB- by S&P or lower than Baa3 by Moody's are considered non-investment grade.

FAIR_VALUE_MEASUREMENT_AND_FAI5

FAIR VALUE MEASUREMENT AND FAIR VALUE OF FINANCIAL INSTRUMENTS (Details 4) (Fair Value, Measurements, Nonrecurring, USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Fair Value, Assets Measured on a Nonrecurring Basis
OREO	$1,676	$17,521
Loans Receivable | Non-PCI loans
Fair Value, Assets Measured on a Nonrecurring Basis
Impaired loans	39,417	67,811
Loans Receivable | Non-PCI loans | CRE
Fair Value, Assets Measured on a Nonrecurring Basis
Impaired loans	13,648	26,089
Loans Receivable | Non-PCI loans | C&I
Fair Value, Assets Measured on a Nonrecurring Basis
Impaired loans	11,356	16,581
Loans Receivable | Non-PCI loans | Residential
Fair Value, Assets Measured on a Nonrecurring Basis
Impaired loans	14,306	25,034
Loans Receivable | Non-PCI loans | Consumer
Fair Value, Assets Measured on a Nonrecurring Basis
Impaired loans	107	107
Significant Unobservable Inputs (Level 3)
Fair Value, Assets Measured on a Nonrecurring Basis
OREO	1,676	17,521
Significant Unobservable Inputs (Level 3) | Loans Receivable | Non-PCI loans
Fair Value, Assets Measured on a Nonrecurring Basis
Impaired loans	39,417	67,811
Significant Unobservable Inputs (Level 3) | Loans Receivable | Non-PCI loans | CRE
Fair Value, Assets Measured on a Nonrecurring Basis
Impaired loans	13,648	26,089
Significant Unobservable Inputs (Level 3) | Loans Receivable | Non-PCI loans | C&I
Fair Value, Assets Measured on a Nonrecurring Basis
Impaired loans	11,356	16,581
Significant Unobservable Inputs (Level 3) | Loans Receivable | Non-PCI loans | Residential
Fair Value, Assets Measured on a Nonrecurring Basis
Impaired loans	14,306	25,034
Significant Unobservable Inputs (Level 3) | Loans Receivable | Non-PCI loans | Consumer
Fair Value, Assets Measured on a Nonrecurring Basis
Impaired loans	$107	$107

FAIR_VALUE_MEASUREMENT_AND_FAI6

FAIR VALUE MEASUREMENT AND FAIR VALUE OF FINANCIAL INSTRUMENTS (Details 5) (Fair Value, Measurements, Nonrecurring, USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
OREO
Fair Value, Assets Measured on a Nonrecurring Basis
Increase (decrease) in value of assets	($277)	($526)
Loans Receivable | Non-PCI loans
Fair Value, Assets Measured on a Nonrecurring Basis
Increase (decrease) in value of assets	-1,868	-7,359
Loans Receivable | Non-PCI loans | CRE
Fair Value, Assets Measured on a Nonrecurring Basis
Increase (decrease) in value of assets	841	-464
Loans Receivable | Non-PCI loans | C&I
Fair Value, Assets Measured on a Nonrecurring Basis
Increase (decrease) in value of assets	-2,470	-6,530
Loans Receivable | Non-PCI loans | Residential
Fair Value, Assets Measured on a Nonrecurring Basis
Increase (decrease) in value of assets	($239)	($365)

FAIR_VALUE_MEASUREMENT_AND_FAI7

FAIR VALUE MEASUREMENT AND FAIR VALUE OF FINANCIAL INSTRUMENTS (Details 6) (Fair Value, Measurements, Nonrecurring, USD $)	3 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015		Dec. 31, 2014
Quantitative information
OREO	1,676		17,521
Significant Unobservable Inputs (Level 3)
Quantitative information
OREO	1,676		17,521
OREO | Appraisal | Significant Unobservable Inputs (Level 3)
Quantitative information
OREO	1,676		17,521
OREO | Appraisal | Significant Unobservable Inputs (Level 3) | Weighted Average
Quantitative information
Selling cost (as a percent)	8.00%		8.00%
Loans Receivable | Non-PCI loans
Quantitative information
Impaired loans	39,417		67,811
Loans Receivable | Non-PCI loans | Significant Unobservable Inputs (Level 3)
Quantitative information
Impaired loans	39,417		67,811
Loans Receivable | Non-PCI loans | Discounted cash flow | Significant Unobservable Inputs (Level 3)
Quantitative information
Impaired loans	3,578		11,499
Loans Receivable | Non-PCI loans | Discounted cash flow | Significant Unobservable Inputs (Level 3) | Minimum
Quantitative information
Discount rate (as a percent)	0.00%		0.00%
Loans Receivable | Non-PCI loans | Discounted cash flow | Significant Unobservable Inputs (Level 3) | Maximum
Quantitative information
Discount rate (as a percent)	86.00%		81.00%
Loans Receivable | Non-PCI loans | Discounted cash flow | Significant Unobservable Inputs (Level 3) | Weighted Average
Quantitative information
Discount rate (as a percent)	58.00%		49.00%
Loans Receivable | Non-PCI loans | Market comparables | Significant Unobservable Inputs (Level 3)
Quantitative information
Impaired loans	35,839		56,312
Loans Receivable | Non-PCI loans | Market comparables | Significant Unobservable Inputs (Level 3) | Minimum
Quantitative information
Discount rate (as a percent)	0.00%	[1]	0.00%	[1]
Loans Receivable | Non-PCI loans | Market comparables | Significant Unobservable Inputs (Level 3) | Maximum
Quantitative information
Discount rate (as a percent)	100.00%	[1]	100.00%	[1]
Loans Receivable | Non-PCI loans | Market comparables | Significant Unobservable Inputs (Level 3) | Weighted Average
Quantitative information
Discount rate (as a percent)	7.00%	[1]	4.00%	[1]
[1]	Discount rate is adjusted for factors such as liquidation cost of collateral and selling cost.

FAIR_VALUE_MEASUREMENT_AND_FAI8

FAIR VALUE MEASUREMENT AND FAIR VALUE OF FINANCIAL INSTRUMENTS (Details 7) (USD $)	Mar. 31, 2015		Dec. 31, 2014		Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Financial Assets:
Cash and cash equivalents	$1,886,199		$1,039,885		$1,884,855	$895,820
Short-term investments	325,350		338,714
Securities purchased under resale agreements	1,550,000		1,225,000
Loans held for sale	196,111		45,950
Loans receivable, net	21,116,931	[1]	21,468,270	[1]
Investment in Federal Home Loan Bank stock	28,603		31,239
Investment in Federal Reserve Bank stock	54,556		54,451
Financial Liabilities:
Federal Home Loan Bank advances	317,777		317,241
Securities sold under repurchase agreements	695,000		795,000
Long-term debt	220,905		225,848
Carrying Amount
Financial Assets:
Cash and cash equivalents	1,886,199		1,039,885
Short-term investments	325,350		338,714
Securities purchased under resale agreements	1,550,000		1,225,000
Loans held for sale	196,111		45,950
Loans receivable, net	21,116,931		21,468,270
Investment in Federal Home Loan Bank stock	28,603		31,239
Investment in Federal Reserve Bank stock	54,556		54,451
Accrued interest receivable	86,186		88,303
Financial Liabilities:
Demand, savings and money market deposits	18,786,462		17,896,035
Time deposits	6,376,371		6,112,739
Federal Home Loan Bank advances	317,777		317,241
Securities sold under repurchase agreements	695,000		795,000
Accrued interest payable	12,141		11,303
Long-term debt	220,905		225,848
Fair Value Measurements
Financial Assets:
Cash and cash equivalents	1,886,199		1,039,885
Short-term investments	325,350		338,714
Securities purchased under resale agreements	1,597,101		1,191,060
Loans held for sale	196,111		45,950
Loans receivable, net	20,905,743		20,997,379
Investment in Federal Home Loan Bank stock	28,603		31,239
Investment in Federal Reserve Bank stock	54,556		54,451
Accrued interest receivable	86,186		88,303
Financial Liabilities:
Demand, savings and money market deposits	18,786,462		17,896,035
Time deposits	6,358,260		6,095,217
Federal Home Loan Bank advances	334,286		336,302
Securities sold under repurchase agreements	751,270		870,434
Accrued interest payable	12,141		11,303
Long-term debt	207,906		205,777
Fair Value Measurements | Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial Assets:
Cash and cash equivalents	1,886,199		1,039,885
Fair Value Measurements | Significant Other Observable Inputs (Level 2)
Financial Assets:
Short-term investments	325,350		338,714
Securities purchased under resale agreements	1,597,101		1,191,060
Loans held for sale	196,111		45,950
Investment in Federal Home Loan Bank stock	28,603		31,239
Investment in Federal Reserve Bank stock	54,556		54,451
Accrued interest receivable	86,186		88,303
Financial Liabilities:
Demand, savings and money market deposits	18,786,462		17,896,035
Federal Home Loan Bank advances	334,286		336,302
Securities sold under repurchase agreements	751,270		870,434
Accrued interest payable	12,141		11,303
Long-term debt	207,906		205,777
Fair Value Measurements | Significant Unobservable Inputs (Level 3)
Financial Assets:
Loans receivable, net	20,905,743		20,997,379
Financial Liabilities:
Time deposits	$6,358,260		$6,095,217
[1]	Loans net of ASC 310-30 discount.

FAIR_VALUE_MEASUREMENT_AND_FAI9

FAIR VALUE MEASUREMENT AND FAIR VALUE OF FINANCIAL INSTRUMENTS (Details 8)	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2010
Valuation Methodologies
Maximum Term of Maturity for Securities Purchased under Resale Agreements to be Included in Cash and Cash Equivalents	90 days
Term of Maturity that Securities Purchased under Resale Agreements Must Exceed to be Included in Certain Fair Value Calculations	90 days
Foreign exchange options
Valuation Methodologies
Term of contracts		5 years
Embedded derivative liabilities
Valuation Methodologies
Term of contracts		5 years

STOCKBASED_COMPENSATION_Detail

STOCK-BASED COMPENSATION (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Summary of Stock-Based Compensation Plans
Total compensation expense, before taxes	$4,000,000	$3,200,000
Net tax benefit recognized in equity for stock compensation plans	3,145,000	3,708,000
Stock options
Summary of Stock-Based Compensation Plans
Cash proceeds from stock option exercises	838,000	283,000
Net tax benefit recognized in equity for stock compensation plans	$291,000	$82,000
1998 Stock Incentive Plan
Summary of Stock-Based Compensation Plans
Incentive shares available to be issued	3,050,063

STOCKBASED_COMPENSATION_Detail1

STOCK-BASED COMPENSATION (Details 2) (Stock options, USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Stock options
Stock Options
Vesting period	4 years
Contractual term of stock option grants	7 years
Shares
Outstanding at beginning of period (in shares)	42,116
Exercised (in shares)	-39,751
Outstanding at end of period (in shares)	2,365
Vested or expected to vest at end of period (in shares)	2,365
Exercisable at end of period (in shares)	2,365
Weighted Average Exercise Price
Outstanding at beginning of period (in dollars per share)	$20.75
Exercised (in dollars per share)	$21.09
Outstanding at end of period (in dollars per share)	$14.95
Vested or expected to vest at end of period (in dollars per share)	$14.95
Exercisable at end of period (in dollars per share)	$14.95
Share based compensation plan, additional disclosures
Outstanding at end of period, Weighted Average Remaining Contractual Term	9 months 7 days
Vested or expected to vest at end of period, Weighted Average Remaining Contractual Term	9 months 7 days
Exercisable at end of period, Weighted Average Remaining Contractual Term	9 months 7 days
Outstanding at end of period, Aggregate Intrinsic Value	$60
Vested or expected to vest at end of period, Aggregate Intrinsic Value	60
Exercisable at end of period, Aggregate Intrinsic Value	60
Intrinsic value of options exercised (in dollars)	$693	$194

STOCKBASED_COMPENSATION_Detail2

STOCK-BASED COMPENSATION (Details 3) (USD $)	3 Months Ended
In Millions, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Restricted Stock Awards | Outside Director
Shares
Granted (in shares)	0	0
Restricted Stock Awards | Minimum
Summary of Stock-Based Compensation Plans
Vesting period	3 years
Restricted Stock Awards | Maximum
Summary of Stock-Based Compensation Plans
Vesting period	5 years
Time-based restricted stock awards
Shares
Outstanding at beginning of period (in shares)	751,020
Granted (in shares)	411,802
Vested (in shares)	-207,495
Forfeited (in shares)	-13,119
Outstanding at end of period (in shares)	942,208
Weighted Average Price
Outstanding at beginning of period (in dollars per share)	30.61
Granted (in dollars per share)	38.85	36.83
Vested (in dollars per share)	23.27
Forfeited (in dollars per share)	34.05
Outstanding at end of period (in dollars per share)	35.78
Additional disclosures
Total fair value of restricted stock awards vested	8.4	14.6
Total unrecognized stock compensation expense	29.3
Weighted average period to recognize unrecognized compensation cost	2 years 4 months 28 days
Performance-based restricted stock awards
Shares
Outstanding at beginning of period (in shares)	518,553
Granted (in shares)	149,284
Vested (in shares)	-144,445
Outstanding at end of period (in shares)	523,392
Weighted Average Price
Outstanding at beginning of period (in dollars per share)	29.64
Granted (in dollars per share)	39.95	36.85
Vested (in dollars per share)	22.05
Outstanding at end of period (in dollars per share)	35.64
Additional disclosures
Total fair value of restricted stock awards vested	5.8	2.7
Total unrecognized stock compensation expense	12.3
Weighted average period to recognize unrecognized compensation cost	2 years 3 months 15 days

SECURITIES_PURCHASED_UNDER_RES1

SECURITIES PURCHASED UNDER RESALE AGREEMENTS AND SOLD UNDER REPURCHASE AGREEMENTS (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Resale agreements
Gross resale agreements	$1,850,000	$1,425,000
Weighted average interest rates (as a percent)	1.42%	1.55%

SECURITIES_PURCHASED_UNDER_RES2

SECURITIES PURCHASED UNDER RESALE AGREEMENTS AND SOLD UNDER REPURCHASE AGREEMENTS (Details 2) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
SECURITIES PURCHASED UNDER RESALE AGREEMENTS AND SOLD UNDER REPURCHASE AGREEMENTS
Gross repurchase agreements	$995,000	$995,000
Weighted average interest rates (as a percent)	3.70%	3.70%

SECURITIES_PURCHASED_UNDER_RES3

SECURITIES PURCHASED UNDER RESALE AGREEMENTS AND SOLD UNDER REPURCHASE AGREEMENTS (Details 3) (USD $)	Mar. 31, 2015		Dec. 31, 2014
In Thousands, unless otherwise specified
Assets, Resale Agreements
Gross Amounts of Recognized Assets	$1,850,000		$1,425,000
Gross Amounts Offset on the Consolidated Balance Sheet	-300,000		-200,000
Net Amounts of Assets Presented	1,550,000		1,225,000
Gross Amounts Not Offset on the Consolidated Balance Sheet
Financial Instruments	-350,000	[1]	-425,000	[1]
Collateral Received	-1,195,203	[2]	-797,172	[2]
Net Amount	4,797		2,828
Liabilities, Repurchase Agreements
Gross Amounts of Recognized Liabilities	995,000		995,000
Gross Amounts Offset on the Consolidated Balance Sheet	-300,000		-200,000
Net Amounts of Liabilities Presented	695,000		795,000
Gross Amounts Not Offset on the Consolidated Balance Sheet
Financial Instruments	-350,000	[1]	-425,000	[1]
Collateral Posted	($345,000)	[3]	($370,000)	[3]
[1]	Includes financial instruments subject to enforceable master netting arrangements that are not permitted to be offset under ASC 210-20-45 but would be eligible for offsetting to the extent an event of default has occurred.
[2]	Represents the fair value of securities the Company has received under resale agreements, limited for table presentation purposes to the amount of the recognized asset due from each counterparty.
[3]	Represents the fair value of securities the Company has pledged under repurchase agreements, limited for table presentation purposes to the amount of the recognized liability owed to each counterparty.

AVAILABLEFORSALE_INVESTMENT_SE2

AVAILABLE-FOR-SALE INVESTMENT SECURITIES (Details) (USD $)	Mar. 31, 2015		Dec. 31, 2014
In Thousands, unless otherwise specified
Schedule of Available-for-sale Investment Securities
Amortized Cost	$2,817,847		$2,619,205
Gross Unrealized Gains	29,791		21,128
Gross Unrealized Losses	-6,553		-13,968
Fair Value	2,841,085		2,626,365
U.S. Treasury securities
Schedule of Available-for-sale Investment Securities
Amortized Cost	1,162,801		873,101
Gross Unrealized Gains	9,586		1,971
Gross Unrealized Losses	-161		-1,637
Fair Value	1,172,226		873,435
U.S. government agency and U.S. government sponsored enterprise debt securities
Schedule of Available-for-sale Investment Securities
Amortized Cost	411,275		311,927
Gross Unrealized Gains	1,143		490
Gross Unrealized Losses	-452		-1,393
Fair Value	411,966		311,024
U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities - Commercial mortgage-backed securities
Schedule of Available-for-sale Investment Securities
Amortized Cost	94,330		140,957
Gross Unrealized Gains	1,242		1,056
Gross Unrealized Losses	-337		-593
Fair Value	95,235		141,420
U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities - Residential mortgage-backed securities
Schedule of Available-for-sale Investment Securities
Amortized Cost	717,693		785,412
Gross Unrealized Gains	11,274		9,754
Gross Unrealized Losses	-1,611		-4,078
Fair Value	727,356		791,088
Municipal securities
Schedule of Available-for-sale Investment Securities
Amortized Cost	187,244		245,408
Gross Unrealized Gains	4,800		6,202
Gross Unrealized Losses	-798		-1,162
Fair Value	191,246		250,448
Other residential mortgage-backed securities | Investment grade
Schedule of Available-for-sale Investment Securities
Amortized Cost	50,297	[1]	52,694	[1]
Gross Unrealized Gains	1,310	[1]	1,359	[1]
Gross Unrealized Losses	-106	[1]	-135	[1]
Fair Value	51,501	[1]	53,918	[1]
Other commercial mortgage-backed securities | Investment grade
Schedule of Available-for-sale Investment Securities
Amortized Cost			34,000	[1]
Gross Unrealized Gains			53	[1]
Fair Value			34,053	[1]
Corporate debt securities | Investment grade
Schedule of Available-for-sale Investment Securities
Amortized Cost	141,140	[1]	116,236	[1]
Gross Unrealized Losses	-739	[1]	-1,054	[1]
Fair Value	140,401	[1]	115,182	[1]
Corporate debt securities | Non-investment grade
Schedule of Available-for-sale Investment Securities
Amortized Cost	11,524	[1]	17,881	[1]
Gross Unrealized Losses	-2,023	[1]	-3,200	[1]
Fair Value	9,501	[1]	14,681	[1]
Other securities
Schedule of Available-for-sale Investment Securities
Amortized Cost	41,543		41,589
Gross Unrealized Gains	436		243
Gross Unrealized Losses	-326		-716
Fair Value	$41,653		$41,116
[1]	Available-for-sale investment securities rated BBB- or higher by S&P or Baa3 or higher by Moody's are considered investment grade. Conversely, available-for-sale investment securities rated lower than BBB- by S&P or lower than Baa3 by Moody's are considered non-investment grade.

AVAILABLEFORSALE_INVESTMENT_SE3

AVAILABLE-FOR-SALE INVESTMENT SECURITIES (Details 2) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Schedule of Available-for-sale Investment Securities
Proceeds from sales	$180,501	$330,231
Gross realized gains	4,404	3,545
Gross realized losses		127	[1]
Related tax expense	1,850	1,436
MetroCorp
Schedule of Available-for-sale Investment Securities
Gross realized losses		$127
[1]	The gross $127 thousand of losses resulted from the available-for-sale investment securities acquired from MetroCorp which were sold immediately after the acquisition closed.

AVAILABLEFORSALE_INVESTMENT_SE4

AVAILABLE-FOR-SALE INVESTMENT SECURITIES (Details 3) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2013
Other than Temporary Impairment, Credit Losses Recognized in Earnings
OTTI credit losses	$0	$0
Gross realized gains
Gross realized gains	4,404	3,545
Corporate debt securities | Non-investment grade
Gross realized gains
Gross realized gains	960
Available-for-sale investment securities
Other than Temporary Impairment, Credit Losses Recognized in Earnings
Beginning balance	112,338		115,511
Reduction for securities sold	-5,650
Ending balance	$106,688	$115,511	$115,511

AVAILABLEFORSALE_INVESTMENT_SE5

AVAILABLE-FOR-SALE INVESTMENT SECURITIES (Details 4) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Gross unrealized losses and related fair values of individual securities in a continuous unrealized loss position
Continuous unrealized loss position less than 12 months, Fair Value	$296,465	$414,390
Continuous unrealized loss position less than 12 months, Unrealized Losses	-1,319	-2,051
Continuous unrealized loss position 12 months or more, Fair Value	315,486	718,223
Continuous unrealized loss position 12 months or more, Unrealized Losses	-5,234	-11,917
Continuous unrealized loss position total, Fair Value	611,951	1,132,613
Continuous unrealized loss position total, Unrealized Losses	-6,553	-13,968
U.S. Treasury securities
Gross unrealized losses and related fair values of individual securities in a continuous unrealized loss position
Continuous unrealized loss position less than 12 months, Fair Value	61,684	170,260
Continuous unrealized loss position less than 12 months, Unrealized Losses	-37	-266
Continuous unrealized loss position 12 months or more, Fair Value	50,860	163,800
Continuous unrealized loss position 12 months or more, Unrealized Losses	-124	-1,371
Continuous unrealized loss position total, Fair Value	112,544	334,060
Continuous unrealized loss position total, Unrealized Losses	-161	-1,637
U.S. government agency and U.S. government sponsored enterprise debt securities
Gross unrealized losses and related fair values of individual securities in a continuous unrealized loss position
Continuous unrealized loss position less than 12 months, Fair Value	144,114	69,438
Continuous unrealized loss position less than 12 months, Unrealized Losses	-383	-504
Continuous unrealized loss position 12 months or more, Fair Value	24,927	124,104
Continuous unrealized loss position 12 months or more, Unrealized Losses	-69	-889
Continuous unrealized loss position total, Fair Value	169,041	193,542
Continuous unrealized loss position total, Unrealized Losses	-452	-1,393
U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities - Commercial mortgage-backed securities
Gross unrealized losses and related fair values of individual securities in a continuous unrealized loss position
Continuous unrealized loss position less than 12 months, Fair Value	14,119	45,405
Continuous unrealized loss position less than 12 months, Unrealized Losses	-141	-257
Continuous unrealized loss position 12 months or more, Fair Value	13,541	16,169
Continuous unrealized loss position 12 months or more, Unrealized Losses	-196	-336
Continuous unrealized loss position total, Fair Value	27,660	61,574
Continuous unrealized loss position total, Unrealized Losses	-337	-593
U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities - Residential mortgage-backed securities
Gross unrealized losses and related fair values of individual securities in a continuous unrealized loss position
Continuous unrealized loss position less than 12 months, Fair Value	40,969	81,927
Continuous unrealized loss position less than 12 months, Unrealized Losses	-97	-270
Continuous unrealized loss position 12 months or more, Fair Value	103,488	241,047
Continuous unrealized loss position 12 months or more, Unrealized Losses	-1,514	-3,808
Continuous unrealized loss position total, Fair Value	144,457	322,974
Continuous unrealized loss position total, Unrealized Losses	-1,611	-4,078
Percentage of the total available-for-sale investment securities portfolio	26.00%	30.00%
Municipal securities
Gross unrealized losses and related fair values of individual securities in a continuous unrealized loss position
Continuous unrealized loss position less than 12 months, Fair Value	26,905	6,391
Continuous unrealized loss position less than 12 months, Unrealized Losses	-335	-26
Continuous unrealized loss position 12 months or more, Fair Value	15,783	61,107
Continuous unrealized loss position 12 months or more, Unrealized Losses	-463	-1,136
Continuous unrealized loss position total, Fair Value	42,688	67,498
Continuous unrealized loss position total, Unrealized Losses	-798	-1,162
Percentage of the total available-for-sale investment securities portfolio	7.00%	10.00%
Other residential mortgage-backed securities | Investment grade
Gross unrealized losses and related fair values of individual securities in a continuous unrealized loss position
Continuous unrealized loss position 12 months or more, Fair Value	6,985	7,217
Continuous unrealized loss position 12 months or more, Unrealized Losses	-106	-135
Continuous unrealized loss position total, Fair Value	6,985	7,217
Continuous unrealized loss position total, Unrealized Losses	-106	-135
Corporate debt securities | Investment grade
Gross unrealized losses and related fair values of individual securities in a continuous unrealized loss position
Continuous unrealized loss position less than 12 months, Fair Value		25,084
Continuous unrealized loss position less than 12 months, Unrealized Losses		-12
Continuous unrealized loss position 12 months or more, Fair Value	90,401	90,098
Continuous unrealized loss position 12 months or more, Unrealized Losses	-739	-1,042
Continuous unrealized loss position total, Fair Value	90,401	115,182
Continuous unrealized loss position total, Unrealized Losses	-739	-1,054
Corporate debt securities | Non-investment grade
Gross unrealized losses and related fair values of individual securities in a continuous unrealized loss position
Continuous unrealized loss position 12 months or more, Fair Value	9,501	14,681
Continuous unrealized loss position 12 months or more, Unrealized Losses	-2,023	-3,200
Continuous unrealized loss position total, Fair Value	9,501	14,681
Continuous unrealized loss position total, Unrealized Losses	-2,023	-3,200
Percentage of the total available-for-sale investment securities portfolio	1.00%	1.00%
Other securities
Gross unrealized losses and related fair values of individual securities in a continuous unrealized loss position
Continuous unrealized loss position less than 12 months, Fair Value	8,674	15,885
Continuous unrealized loss position less than 12 months, Unrealized Losses	-326	-716
Continuous unrealized loss position total, Fair Value	8,674	15,885
Continuous unrealized loss position total, Unrealized Losses	($326)	($716)

AVAILABLEFORSALE_INVESTMENT_SE6

AVAILABLE-FOR-SALE INVESTMENT SECURITIES (Details 5) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Scheduled maturities of available-for sale investment securities, Amortized Cost
Due within one year	$435,764,000
Due after one year through five years	1,275,954,000
Due after five years through ten years	311,367,000
Due after ten years	794,762,000
Total available-for-sale investment securities	2,817,847,000
Scheduled maturities of available-for sale investment securities, Estimated Fair Value
Due within one year	434,493,000
Due after one year through five years	1,289,312,000
Due after five years through ten years	311,157,000
Due after ten years	806,123,000
Fair Value	2,841,085,000	2,626,365,000
Par value of securities pledged to secure public deposits	$1,880,000,000	$1,930,000,000

DERIVATIVE_FINANCIAL_INSTRUMEN2

DERIVATIVE FINANCIAL INSTRUMENTS (Details) (USD $)	Mar. 31, 2015		Dec. 31, 2014
In Thousands, unless otherwise specified
Designated as Hedging Instrument
Fair Values of Derivative Instruments
Notional Amount	$129,096		$132,667
Derivative Liabilities	6,370	[1]	9,922	[1]
Designated as Hedging Instrument | Interest rate swaps on certificates of deposits
Fair Values of Derivative Instruments
Notional Amount	129,096		132,667
Derivative Liabilities	6,370	[1]	9,922	[1]
Derivative instruments not designated as hedging instruments
Fair Values of Derivative Instruments
Notional Amount	6,340,521		5,672,472
Derivative Assets	83,083	[1]	55,793	[1]
Derivative Liabilities	83,406	[1]	54,342	[1]
Derivative instruments not designated as hedging instruments | Foreign exchange options
Fair Values of Derivative Instruments
Notional Amount	50,000		85,614
Derivative Assets	3,683	[1]	6,136	[1]
Derivative instruments not designated as hedging instruments | Embedded derivative liabilities
Fair Values of Derivative Instruments
Notional Amount	47,794		47,838
Derivative Liabilities	3,412	[1]	3,392	[1]
Derivative instruments not designated as hedging instruments | Interest rate swaps and caps
Fair Values of Derivative Instruments
Notional Amount	5,204,760		4,858,391
Derivative Assets	66,060	[1]	41,534	[1]
Derivative Liabilities	66,914	[1]	41,779	[1]
Derivative instruments not designated as hedging instruments | Foreign exchange contracts
Fair Values of Derivative Instruments
Notional Amount	1,037,967		680,629
Derivative Assets	13,340	[1]	8,123	[1]
Derivative Liabilities	$13,080	[1]	$9,171	[1]
[1]	Derivative assets are included in Other Assets. Derivative liabilities are included in Accrued Expenses and Other liabilities, and Deposits.

DERIVATIVE_FINANCIAL_INSTRUMEN3

DERIVATIVE FINANCIAL INSTRUMENTS (Details 2) (Interest rate swaps on certificates of deposits, USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Derivatives
Notional amount terminated	$3,600,000
Interest Expense
Net gains (losses) recognized in the Income Statement
Gains (losses) recognized on interest rate swaps	3,048,000	2,704,000
Net amount recognized on fair value hedges (ineffective portion)	353,000	-233,000
Reduction in interest expense recognized on interest rate swaps	920,000	1,824,000
Interest Expense | Certificates of deposits
Net gains (losses) recognized in the Income Statement
Gains (losses) recognized on certificates of deposit	($2,695,000)	($2,937,000)

DERIVATIVE_FINANCIAL_INSTRUMEN4

DERIVATIVE FINANCIAL INSTRUMENTS (Details 3) (USD $)	12 Months Ended
	Dec. 31, 2010	Mar. 31, 2015	Dec. 31, 2014
Foreign exchange options
Derivatives
Term of contract	5 years
Interest rate swaps and caps
Derivatives
Notional amount of derivative assets		$2,600,000,000	$2,450,000,000
Notional amount of derivative liabilities		2,600,000,000	2,400,000,000
Short-term foreign exchange contracts
Derivatives
Notional Amount		1,040,000,000	680,600,000
Fair value of derivative asset		13,300,000	8,100,000
Fair value of derivative liability		$13,100,000	$9,200,000

DERIVATIVE_FINANCIAL_INSTRUMEN5

DERIVATIVE FINANCIAL INSTRUMENTS (Details 4) (Derivative instruments not designated as hedging instruments, USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Derivative Instruments, Gain (Loss)
Total net gains (losses)	$772	($3,183)
Foreign exchange options | Foreign exchange income
Derivative Instruments, Gain (Loss)
Total net gains (losses)	199	-119
Foreign exchange options with embedded derivatives | Other operating expense
Derivative Instruments, Gain (Loss)
Total net gains (losses)	-141	1
Interest rate swaps and caps | Other operating income
Derivative Instruments, Gain (Loss)
Total net gains (losses)	-594	-936
Foreign exchange contracts | Foreign exchange income
Derivative Instruments, Gain (Loss)
Total net gains (losses)	$1,308	($2,129)

DERIVATIVE_FINANCIAL_INSTRUMEN6

DERIVATIVE FINANCIAL INSTRUMENTS (Details 5) (USD $)	Mar. 31, 2015		Dec. 31, 2014
Counterparties assets
Assets, Derivatives
Gross Amounts of Recognized Assets	$13,564,000		$12,396,000
Gross Amounts Offset On the Consolidated Balance Sheet	0		0
Net Amounts of Assets Presented	13,564,000		12,396,000
Gross Amounts Not Offset on the Consolidated Balance Sheet
Financial Instruments	-6,002,000	[1]	-5,725,000	[1]
Collateral Received	-6,480,000	[2]	-3,463,000	[2]
Net Amount	1,082,000		3,208,000
Cash collateral received	6,500,000		3,500,000
Counterparties liabilities
Liabilities, Derivatives
Gross Amounts of Recognized Liabilities	79,890,000		56,505,000
Gross Amounts Offset On the Consolidated Balance Sheet	0		0
Net Amounts of Liabilities Presented	79,890,000		56,505,000
Gross Amounts Not Offset on the Consolidated Balance Sheet
Financial Instruments	-6,002,000	[1]	-5,725,000	[1]
Collateral Posted	-72,018,000	[3]	-49,951,000	[3]
Net Amount	1,870,000		829,000
Cash collateral posted	$19,000,000		$12,800,000
[1]	Represents the netting of derivative receivable and payable balance for the same counterparty under enforceable master netting arrangements if the Company has elected to net.
[2]	Represents $6.5 million and $3.5 million of cash collateral received against derivative assets with the same counterparty that are subject to enforceable master netting arrangements as of March 31, 2015 and December 31, 2014, respectively.
[3]	Represents cash and securities pledged against derivative liabilities with the same counterparty that are subject to enforceable master netting arrangements. Includes approximately $19.0 million and $12.8 million of cash collateral posted as of March 31, 2015 and December 31, 2014, respectively.

LOANS_RECEIVABLE_AND_ALLOWANCE2

LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES (Details) (USD $)	Mar. 31, 2015		Dec. 31, 2014		Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Allowance for loan losses	($257,738)		($261,679)
Loans, net	21,116,931	[1]	21,468,270	[1]
Non-PCI loans
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Loans, net	19,879,588		20,146,871
PCI loans
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Loans, net	1,237,343	[1]	1,321,399	[1]
Loans Receivable
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	21,375,568	[1]	21,727,145	[1]
Unearned fees, premiums and discounts, net	-899	[1]	2,804	[1]
Allowance for loan losses	-257,738	[1]	-261,679	[1]	-252,136	-249,675
Loans Receivable | Non-PCI loans
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	20,137,582		20,405,032
Unearned fees, premiums and discounts, net	-899		2,804
Allowance for loan losses	-257,095		-260,965		-249,934	-247,406
Loans Receivable | Non-PCI loans | Pass/Watch
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	19,412,805		19,625,603
Loans Receivable | Non-PCI loans | Special Mention
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	184,514		213,007
Loans Receivable | Non-PCI loans | Substandard
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	539,783		565,834
Loans Receivable | Non-PCI loans | Doubtful
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	426		533
Loans Receivable | Non-PCI loans | Loss
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	54		55
Loans Receivable | PCI loans
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	1,237,986	[1]	1,322,113	[1]
Allowance for loan losses	-643	[1]	-714	[1]	-2,202	-2,269
Loans Receivable | PCI loans | Pass/Watch
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	1,036,513		1,089,726
Loans Receivable | PCI loans | Special Mention
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	15,193		18,688
Loans Receivable | PCI loans | Substandard
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	186,280		213,699
CRE | Loans Receivable
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	7,045,421	[1]	6,819,513	[1]
CRE | Loans Receivable | Income producing
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	6,455,177	[1]	6,256,059	[1]
CRE | Loans Receivable | Construction
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	367,460	[1]	332,287	[1]
CRE | Loans Receivable | Land
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	222,784	[1]	231,167	[1]
CRE | Loans Receivable | Non-PCI loans
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	6,371,041		6,102,216
Allowance for loan losses	-69,740		-72,263		-63,627	-70,154
CRE | Loans Receivable | Non-PCI loans | Income producing
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	5,802,931		5,568,046
CRE | Loans Receivable | Non-PCI loans | Income producing | Pass/Watch
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	5,488,698		5,243,640
CRE | Loans Receivable | Non-PCI loans | Income producing | Special Mention
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	56,245		54,673
CRE | Loans Receivable | Non-PCI loans | Income producing | Substandard
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	257,988		269,733
CRE | Loans Receivable | Non-PCI loans | Construction
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	358,118		319,843
CRE | Loans Receivable | Non-PCI loans | Construction | Pass/Watch
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	353,799		310,259
CRE | Loans Receivable | Non-PCI loans | Construction | Special Mention
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	703		11
CRE | Loans Receivable | Non-PCI loans | Construction | Substandard
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	3,616		9,573
CRE | Loans Receivable | Non-PCI loans | Land
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	209,992		214,327
CRE | Loans Receivable | Non-PCI loans | Land | Pass/Watch
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	187,364		185,220
CRE | Loans Receivable | Non-PCI loans | Land | Special Mention
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	5,701		5,701
CRE | Loans Receivable | Non-PCI loans | Land | Substandard
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	16,927		23,406
CRE | Loans Receivable | PCI loans
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	674,380	[1]	717,297	[1]
CRE | Loans Receivable | PCI loans | Income producing
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	652,246	[1]	688,013	[1]
CRE | Loans Receivable | PCI loans | Income producing | Pass/Watch
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	517,827		534,015
CRE | Loans Receivable | PCI loans | Income producing | Special Mention
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	6,164		9,960
CRE | Loans Receivable | PCI loans | Income producing | Substandard
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	128,255		144,038
CRE | Loans Receivable | PCI loans | Construction
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	9,342	[1]	12,444	[1]
CRE | Loans Receivable | PCI loans | Construction | Pass/Watch
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	585		589
CRE | Loans Receivable | PCI loans | Construction | Special Mention
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	1,739		1,744
CRE | Loans Receivable | PCI loans | Construction | Substandard
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	7,018		10,111
CRE | Loans Receivable | PCI loans | Land
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	12,792	[1]	16,840	[1]
CRE | Loans Receivable | PCI loans | Land | Pass/Watch
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	5,080		7,012
CRE | Loans Receivable | PCI loans | Land | Special Mention
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	5,433		5,391
CRE | Loans Receivable | PCI loans | Land | Substandard
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	2,279		4,437
C&I | Loans Receivable
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	7,720,764	[1]	8,077,201	[1]
C&I | Loans Receivable | Commercial business
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	6,871,450	[1]	7,181,189	[1]
C&I | Loans Receivable | Trade finance
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	849,314	[1]	896,012	[1]
C&I | Loans Receivable | Non-PCI loans
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	7,643,239		7,987,581
Allowance for loan losses	-133,914		-134,598		-127,156	-115,184
C&I | Loans Receivable | Non-PCI loans | Commercial business
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	6,799,149		7,097,853
C&I | Loans Receivable | Non-PCI loans | Commercial business | Pass/Watch
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	6,573,081		6,836,914
C&I | Loans Receivable | Non-PCI loans | Commercial business | Special Mention
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	93,302		130,319
C&I | Loans Receivable | Non-PCI loans | Commercial business | Substandard
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	132,286		130,032
C&I | Loans Receivable | Non-PCI loans | Commercial business | Doubtful
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	426		533
C&I | Loans Receivable | Non-PCI loans | Commercial business | Loss
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	54		55
C&I | Loans Receivable | Non-PCI loans | Trade finance
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	844,090		889,728
C&I | Loans Receivable | Non-PCI loans | Trade finance | Pass/Watch
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	788,864		845,889
C&I | Loans Receivable | Non-PCI loans | Trade finance | Special Mention
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	19,726		13,031
C&I | Loans Receivable | Non-PCI loans | Trade finance | Substandard
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	35,500		30,808
C&I | Loans Receivable | PCI loans
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	77,525	[1]	89,620	[1]
C&I | Loans Receivable | PCI loans | Commercial business
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	72,301	[1]	83,336	[1]
C&I | Loans Receivable | PCI loans | Commercial business | Pass/Watch
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	62,858		70,586
C&I | Loans Receivable | PCI loans | Commercial business | Special Mention
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	997		1,103
C&I | Loans Receivable | PCI loans | Commercial business | Substandard
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	8,446		11,647
C&I | Loans Receivable | PCI loans | Trade finance
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	5,224	[1]	6,284	[1]
C&I | Loans Receivable | PCI loans | Trade finance | Pass/Watch
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	3,535		4,620
C&I | Loans Receivable | PCI loans | Trade finance | Substandard
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	1,689		1,664
Residential | Loans Receivable
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	4,997,219	[1]	5,316,689	[1]
Residential | Loans Receivable | Single-family
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	3,512,794	[1]	3,866,781	[1]
Residential | Loans Receivable | Multifamily
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	1,484,425	[1]	1,449,908	[1]
Residential | Loans Receivable | Non-PCI loans
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	4,539,134		4,831,279
Allowance for loan losses	-42,990		-43,856		-47,995	-50,716
Residential | Loans Receivable | Non-PCI loans | Single-family
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	3,298,775		3,647,262
Residential | Loans Receivable | Non-PCI loans | Single-family | Pass/Watch
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	3,277,085		3,627,491
Residential | Loans Receivable | Non-PCI loans | Single-family | Special Mention
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	3,595		3,143
Residential | Loans Receivable | Non-PCI loans | Single-family | Substandard
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	18,095		16,628
Residential | Loans Receivable | Non-PCI loans | Multifamily
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	1,240,359		1,184,017
Residential | Loans Receivable | Non-PCI loans | Multifamily | Pass/Watch
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	1,162,798		1,095,982
Residential | Loans Receivable | Non-PCI loans | Multifamily | Special Mention
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	4,906		5,124
Residential | Loans Receivable | Non-PCI loans | Multifamily | Substandard
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	72,655		82,911
Residential | Loans Receivable | PCI loans
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	458,085	[1]	485,410	[1]
Residential | Loans Receivable | PCI loans | Single-family
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	214,019	[1]	219,519	[1]
Residential | Loans Receivable | PCI loans | Single-family | Pass/Watch
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	208,238		213,829
Residential | Loans Receivable | PCI loans | Single-family | Special Mention
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	745		374
Residential | Loans Receivable | PCI loans | Single-family | Substandard
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	5,036		5,316
Residential | Loans Receivable | PCI loans | Multifamily
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	244,066	[1]	265,891	[1]
Residential | Loans Receivable | PCI loans | Multifamily | Pass/Watch
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	211,060		230,049
Residential | Loans Receivable | PCI loans | Multifamily | Substandard
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	33,006		35,842
Consumer | Loans Receivable
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	1,612,164	[1]	1,513,742	[1]
Consumer | Loans Receivable | Non-PCI loans
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	1,584,168		1,483,956
Allowance for loan losses	-10,451		-10,248		-11,156	-11,352
Consumer | Loans Receivable | Non-PCI loans | Pass/Watch
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	1,581,116		1,480,208
Consumer | Loans Receivable | Non-PCI loans | Special Mention
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	336		1,005
Consumer | Loans Receivable | Non-PCI loans | Substandard
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	2,716		2,743
Consumer | Loans Receivable | PCI loans
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	27,996	[1]	29,786	[1]
Consumer | Loans Receivable | PCI loans | Pass/Watch
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	27,330		29,026
Consumer | Loans Receivable | PCI loans | Special Mention
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	115		116
Consumer | Loans Receivable | PCI loans | Substandard
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	$551		$644
[1]	Loans net of ASC 310-30 discount.

LOANS_RECEIVABLE_AND_ALLOWANCE3

LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES (Details 2) (Loans Receivable, USD $)	3 Months Ended
In Billions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
	item
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Loans receivable pledged to secure borrowings and to provide additional borrowing capacity from the FHLB and the Federal Reserve Bank	14.79	$14.66
Number of grades in the risk rating system utilized by the company to rate credit risk of loans receivable	8
Residential | Single-family | Minimum
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Number of units of residential property securing fixed and adjustable rate first mortgage loans	1
Adjustable rate mortgage, term of initial fixed interest rates	1 year
Residential | Single-family | Maximum
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Number of units of residential property securing fixed and adjustable rate first mortgage loans	4
Adjustable rate mortgage, term of initial fixed interest rates	3 years
Residential | Multifamily | Minimum
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Adjustable rate mortgage, term of initial fixed interest rates	6 months
Residential | Multifamily | Maximum
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Adjustable rate mortgage, term of initial fixed interest rates	3 years

LOANS_RECEIVABLE_AND_ALLOWANCE4

LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES (Details 3) (Loans Receivable, USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015		Dec. 31, 2014
Nonaccrual and Past Due Loans
Total loans	$21,375,568	[1]	$21,727,145	[1]
Unearned fees, premiums and discounts, net	-899	[1]	2,804	[1]
Number of days a loan is past due and is placed on nonaccrual status	90 days
Non-PCI loans
Nonaccrual and Past Due Loans
Accruing loans 30 - 59 days past due	31,659		30,318
Accruing loans 60 - 89 days past due	6,142		9,917
Total accruing past due loans	37,801		40,235
Nonaccrual loans less than 90 days past due	42,105		41,770
Nonaccrual loans 90 or more days past due	45,675		58,492
Total nonaccrual loans	87,780		100,262
Current accruing loans	20,012,001		20,264,535
Total loans	20,137,582		20,405,032
Unearned fees, premiums and discounts, net	-899		2,804
Total recorded investment in non-PCI loans	20,136,683		20,407,836
CRE
Nonaccrual and Past Due Loans
Total loans	7,045,421	[1]	6,819,513	[1]
CRE | Income producing
Nonaccrual and Past Due Loans
Total loans	6,455,177	[1]	6,256,059	[1]
CRE | Construction
Nonaccrual and Past Due Loans
Total loans	367,460	[1]	332,287	[1]
CRE | Land
Nonaccrual and Past Due Loans
Total loans	222,784	[1]	231,167	[1]
CRE | Non-PCI loans
Nonaccrual and Past Due Loans
Total loans	6,371,041		6,102,216
CRE | Non-PCI loans | Income producing
Nonaccrual and Past Due Loans
Accruing loans 30 - 59 days past due	9,699		14,171
Accruing loans 60 - 89 days past due	1,860		3,593
Total accruing past due loans	11,559		17,764
Nonaccrual loans less than 90 days past due	18,739		19,348
Nonaccrual loans 90 or more days past due	11,011		9,165
Total nonaccrual loans	29,750		28,513
Current accruing loans	5,761,622		5,521,769
Total loans	5,802,931		5,568,046
CRE | Non-PCI loans | Construction
Nonaccrual and Past Due Loans
Nonaccrual loans less than 90 days past due	14		15
Nonaccrual loans 90 or more days past due	917		6,898
Total nonaccrual loans	931		6,913
Current accruing loans	357,187		312,930
Total loans	358,118		319,843
CRE | Non-PCI loans | Land
Nonaccrual and Past Due Loans
Nonaccrual loans less than 90 days past due	214		221
Nonaccrual loans 90 or more days past due	2,386		2,502
Total nonaccrual loans	2,600		2,723
Current accruing loans	207,392		211,604
Total loans	209,992		214,327
C&I
Nonaccrual and Past Due Loans
Total loans	7,720,764	[1]	8,077,201	[1]
C&I | Commercial business
Nonaccrual and Past Due Loans
Total loans	6,871,450	[1]	7,181,189	[1]
C&I | Trade finance
Nonaccrual and Past Due Loans
Total loans	849,314	[1]	896,012	[1]
C&I | Non-PCI loans
Nonaccrual and Past Due Loans
Total loans	7,643,239		7,987,581
C&I | Non-PCI loans | Commercial business
Nonaccrual and Past Due Loans
Accruing loans 30 - 59 days past due	11,227		3,187
Accruing loans 60 - 89 days past due	902		4,361
Total accruing past due loans	12,129		7,548
Nonaccrual loans less than 90 days past due	5,988		6,623
Nonaccrual loans 90 or more days past due	25,436		21,813
Total nonaccrual loans	31,424		28,436
Current accruing loans	6,755,596		7,061,869
Total loans	6,799,149		7,097,853
C&I | Non-PCI loans | Trade finance
Nonaccrual and Past Due Loans
Accruing loans 60 - 89 days past due	600
Total accruing past due loans	600
Nonaccrual loans less than 90 days past due	37		73
Nonaccrual loans 90 or more days past due			292
Total nonaccrual loans	37		365
Current accruing loans	843,453		889,363
Total loans	844,090		889,728
Residential
Nonaccrual and Past Due Loans
Total loans	4,997,219	[1]	5,316,689	[1]
Residential | Single-family
Nonaccrual and Past Due Loans
Total loans	3,512,794	[1]	3,866,781	[1]
Residential | Multifamily
Nonaccrual and Past Due Loans
Total loans	1,484,425	[1]	1,449,908	[1]
Residential | Non-PCI loans
Nonaccrual and Past Due Loans
Total loans	4,539,134		4,831,279
Residential | Non-PCI loans | Single-family
Nonaccrual and Past Due Loans
Accruing loans 30 - 59 days past due	7,239		6,381
Accruing loans 60 - 89 days past due	2,402		1,294
Total accruing past due loans	9,641		7,675
Nonaccrual loans less than 90 days past due	4,731		2,861
Nonaccrual loans 90 or more days past due	4,406		5,764
Total nonaccrual loans	9,137		8,625
Current accruing loans	3,279,997		3,630,962
Total loans	3,298,775		3,647,262
Residential | Non-PCI loans | Multifamily
Nonaccrual and Past Due Loans
Accruing loans 30 - 59 days past due	2,611		4,425
Accruing loans 60 - 89 days past due	376		507
Total accruing past due loans	2,987		4,932
Nonaccrual loans less than 90 days past due	12,216		12,460
Nonaccrual loans 90 or more days past due	1,145		8,359
Total nonaccrual loans	13,361		20,819
Current accruing loans	1,224,011		1,158,266
Total loans	1,240,359		1,184,017
Consumer
Nonaccrual and Past Due Loans
Total loans	1,612,164	[1]	1,513,742	[1]
Consumer | Non-PCI loans
Nonaccrual and Past Due Loans
Accruing loans 30 - 59 days past due	883		2,154
Accruing loans 60 - 89 days past due	2		162
Total accruing past due loans	885		2,316
Nonaccrual loans less than 90 days past due	166		169
Nonaccrual loans 90 or more days past due	374		3,699
Total nonaccrual loans	540		3,868
Current accruing loans	1,582,743		1,477,772
Total loans	$1,584,168		$1,483,956
[1]	Loans net of ASC 310-30 discount.

LOANS_RECEIVABLE_AND_ALLOWANCE5

LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES (Details 4) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Loans in process of foreclosure
Other real estate owned, net	$32,692,000	$32,111,000
Loans Receivable | PCI loans
Nonaccrual loans
Loans on nonaccrual status	53,400,000	63,400,000
Residential real estate properties
Loans in process of foreclosure
Carrying amount of foreclosed residential real estate properties included in total net OREO	4,100,000	3,500,000
Residential
Loans in process of foreclosure
Recorded investment of consumer mortgage loans for which formal foreclosure proceedings are in process	$16,700,000	$16,900,000

LOANS_RECEIVABLE_AND_ALLOWANCE6

LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES (Details 5) (Loans Receivable, USD $)	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014		Dec. 31, 2014
			contract
Loans Modified as TDRs
Period beyond which a TDR generally becomes delinquent	90 days
Non-PCI loans
Loans Modified as TDRs
Number of contracts modified as TDRs that subsequently defaulted	0
Performing loan | A/B Note Splits
Loans Modified as TDRs
Loan balance of restructured loans	2,300,000				$2,900,000
CRE | Non-PCI loans
Loans Modified as TDRs
Number of contracts modified as TDRs that subsequently defaulted			1
Balance of loans modified as TDRs that subsequently defaulted			2,700,000
CRE | Non-PCI loans | Income producing
Loans Modified as TDRs
Number of Contracts	1
Pre-Modification Outstanding Recorded Investment	828,000
Post-Modification Outstanding Recorded Investment	833,000	[1]
C&I | Non-PCI loans
Loans Modified as TDRs
Number of contracts modified as TDRs that subsequently defaulted			1
Balance of loans modified as TDRs that subsequently defaulted			570,000
C&I | Non-PCI loans | Commercial business
Loans Modified as TDRs
Number of Contracts	1		5
Pre-Modification Outstanding Recorded Investment	167,000		1,721,000
Post-Modification Outstanding Recorded Investment	164,000	[1]	1,691,000	[1]
Financial Impact	-32,000	[2]	1,248,000	[2]
Residential | Non-PCI loans | Single-family
Loans Modified as TDRs
Number of Contracts	1		3
Pre-Modification Outstanding Recorded Investment	281,000		5,823,000
Post-Modification Outstanding Recorded Investment	281,000	[1]	5,804,000	[1]
Financial Impact	-2,000	[2]
[1]	Includes subsequent payments after modification and reflects the balance as of March 31, 2015 and 2014.
[2]	The financial impact includes charge-offs and specific reserves recorded at modification date.

LOANS_RECEIVABLE_AND_ALLOWANCE7

LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES (Details 6) (Non-PCI loans, Loans Receivable, USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015		Mar. 31, 2014		Dec. 31, 2014
Impaired loans disclosures
Unpaid principal balance	$150,338				$177,381
Recorded Investment With No Allowance	71,100				82,465
Recorded Investment With Allowance	59,052				71,655
Recorded investment	130,152				154,120
Related allowance	20,173				19,464
Average recorded investment	134,758		186,935
Interest income recognized (accrual basis)	639	[1]	913	[1]
CRE | Income producing
Impaired loans disclosures
Unpaid principal balance	50,389				57,805
Recorded Investment With No Allowance	28,186				34,399
Recorded Investment With Allowance	15,001				15,646
Recorded investment	43,187				50,045
Related allowance	1,399				1,581
Average recorded investment	44,195		67,153
Interest income recognized (accrual basis)	141	[1]	325	[1]
CRE | Construction
Impaired loans disclosures
Unpaid principal balance	916				6,888
Recorded Investment With No Allowance	916				6,888
Recorded investment	916				6,888
Average recorded investment	3,902		6,888
CRE | Land
Impaired loans disclosures
Unpaid principal balance	8,234				13,291
Recorded Investment With No Allowance	2,826				2,838
Recorded Investment With Allowance	543				5,622
Recorded investment	3,369				8,460
Related allowance	175				1,906
Average recorded investment	3,438		12,227
Interest income recognized (accrual basis)	10	[1]	121	[1]
C&I | Commercial business
Impaired loans disclosures
Unpaid principal balance	43,289				42,396
Recorded Investment With No Allowance	10,815				10,552
Recorded Investment With Allowance	28,186				25,717
Recorded investment	39,001				36,269
Related allowance	17,886				15,174
Average recorded investment	39,310		43,726
Interest income recognized (accrual basis)	202	[1]	207	[1]
C&I | Trade finance
Impaired loans disclosures
Unpaid principal balance	223				280
Recorded Investment With Allowance	216				274
Recorded investment	216				274
Related allowance	20				28
Average recorded investment	245		637
Interest income recognized (accrual basis)	3	[1]	4	[1]
Residential | Single-family
Impaired loans disclosures
Unpaid principal balance	16,767				17,838
Recorded Investment With No Allowance	7,007				5,137
Recorded Investment With Allowance	8,404				11,398
Recorded investment	15,411				16,535
Related allowance	413				461
Average recorded investment	15,423		17,100
Interest income recognized (accrual basis)	68	[1]	50	[1]
Residential | Multifamily
Impaired loans disclosures
Unpaid principal balance	29,262				37,624
Recorded Investment With No Allowance	20,200				21,500
Recorded Investment With Allowance	6,594				12,890
Recorded investment	26,794				34,390
Related allowance	279				313
Average recorded investment	26,987		36,369
Interest income recognized (accrual basis)	203	[1]	205	[1]
Consumer
Impaired loans disclosures
Unpaid principal balance	1,258				1,259
Recorded Investment With No Allowance	1,150				1,151
Recorded Investment With Allowance	108				108
Recorded investment	1,258				1,259
Related allowance	1				1
Average recorded investment	1,258		2,835
Interest income recognized (accrual basis)	$12	[1]	$1	[1]
[1]	Includes interest recognized on accruing non-PCI TDRs. Interest payments received on nonaccrual non-PCI loans are generally reflected as a reduction of principal and not as interest income.

LOANS_RECEIVABLE_AND_ALLOWANCE8

LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES (Details 7) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015		Mar. 31, 2014
Financing Receivable Allowance for Credit Losses Roll Forward
Beginning balance	$261,679
(Reversal of) provision for loan losses	4,987		6,933
Ending balance	257,738
Ending balance allocated to:
Ending balance	257,738
Loans Receivable
Financing Receivable Allowance for Credit Losses Roll Forward
Beginning balance	261,679	[1]	249,675
(Reversal of) provision for loan losses	4,987		6,933
Provision allocation for unfunded loan commitments and letters of credit	-2,920		-215
Charge-offs	-8,800		-6,136
Recoveries	2,792		1,879
Net recoveries (charge-offs)	-6,008		-4,257
Ending balance	257,738	[1]	252,136
Ending balance allocated to:
Individually evaluated for impairment	20,173		26,718
Collectively evaluated for impairment	236,922		223,216
Acquired with deteriorated credit quality	643		2,202
Ending balance	257,738	[1]	252,136
Loans Receivable | Non-PCI loans
Financing Receivable Allowance for Credit Losses Roll Forward
Beginning balance	260,965		247,406
(Reversal of) provision for loan losses	5,058		7,000
Provision allocation for unfunded loan commitments and letters of credit	-2,920		-215
Charge-offs	-8,800		-6,136
Recoveries	2,792		1,879
Net recoveries (charge-offs)	-6,008		-4,257
Ending balance	257,095		249,934
Ending balance allocated to:
Individually evaluated for impairment	20,173		26,718
Collectively evaluated for impairment	236,922		223,216
Ending balance	257,095		249,934
Loans Receivable | PCI loans
Financing Receivable Allowance for Credit Losses Roll Forward
Beginning balance	714	[1]	2,269
(Reversal of) provision for loan losses	-71		-67
Ending balance	643	[1]	2,202
Ending balance allocated to:
Acquired with deteriorated credit quality	643		2,202
Ending balance	643	[1]	2,202
CRE | Loans Receivable | Non-PCI loans
Financing Receivable Allowance for Credit Losses Roll Forward
Beginning balance	72,263		70,154
(Reversal of) provision for loan losses	-2,333		-7,036
Charge-offs	-1,002		-319
Recoveries	812		828
Net recoveries (charge-offs)	-190		509
Ending balance	69,740		63,627
Ending balance allocated to:
Individually evaluated for impairment	1,574		8,375
Collectively evaluated for impairment	68,166		55,252
Ending balance	69,740		63,627
C&I | Loans Receivable | Non-PCI loans
Financing Receivable Allowance for Credit Losses Roll Forward
Beginning balance	134,598		115,184
(Reversal of) provision for loan losses	5,378		16,592
Charge-offs	-6,589		-5,531
Recoveries	527		911
Net recoveries (charge-offs)	-6,062		-4,620
Ending balance	133,914		127,156
Ending balance allocated to:
Individually evaluated for impairment	17,906		16,490
Collectively evaluated for impairment	116,008		110,666
Ending balance	133,914		127,156
Residential | Loans Receivable | Non-PCI loans
Financing Receivable Allowance for Credit Losses Roll Forward
Beginning balance	43,856		50,716
(Reversal of) provision for loan losses	-1,571		-2,575
Charge-offs	-746		-283
Recoveries	1,451		137
Net recoveries (charge-offs)	705		-146
Ending balance	42,990		47,995
Ending balance allocated to:
Individually evaluated for impairment	692		1,853
Collectively evaluated for impairment	42,298		46,142
Ending balance	42,990		47,995
Consumer | Loans Receivable | Non-PCI loans
Financing Receivable Allowance for Credit Losses Roll Forward
Beginning balance	10,248		11,352
(Reversal of) provision for loan losses	664		-196
Charge-offs	-463		-3
Recoveries	2		3
Net recoveries (charge-offs)	-461
Ending balance	10,451		11,156
Ending balance allocated to:
Individually evaluated for impairment	1
Collectively evaluated for impairment	10,450		11,156
Ending balance	10,451		11,156
Unallocated | Loans Receivable | Non-PCI loans
Financing Receivable Allowance for Credit Losses Roll Forward
(Reversal of) provision for loan losses	2,920		215
Provision allocation for unfunded loan commitments and letters of credit	($2,920)		($215)
[1]	Loans net of ASC 310-30 discount.

LOANS_RECEIVABLE_AND_ALLOWANCE9

LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES (Details 8) (Loans Receivable, USD $)	Mar. 31, 2015		Dec. 31, 2014
In Thousands, unless otherwise specified
Recorded investment in total loans receivable related to each balance in the allowance for loan losses
Individually evaluated for impairment	$130,152		$154,120
Collectively evaluated for impairment	20,007,430		20,250,912
Acquired with deteriorated credit quality	1,237,986	[1]	1,322,113	[1]
Total loans	21,375,568	[1]	21,727,145	[1]
CRE
Recorded investment in total loans receivable related to each balance in the allowance for loan losses
Individually evaluated for impairment	47,472		65,393
Collectively evaluated for impairment	6,323,569		6,036,823
Acquired with deteriorated credit quality	674,380	[1]	717,297	[1]
Total loans	7,045,421	[1]	6,819,513	[1]
C&I
Recorded investment in total loans receivable related to each balance in the allowance for loan losses
Individually evaluated for impairment	39,217		36,543
Collectively evaluated for impairment	7,604,022		7,951,038
Acquired with deteriorated credit quality	77,525	[1]	89,620	[1]
Total loans	7,720,764	[1]	8,077,201	[1]
Residential
Recorded investment in total loans receivable related to each balance in the allowance for loan losses
Individually evaluated for impairment	42,205		50,925
Collectively evaluated for impairment	4,496,929		4,780,354
Acquired with deteriorated credit quality	458,085	[1]	485,410	[1]
Total loans	4,997,219	[1]	5,316,689	[1]
Consumer
Recorded investment in total loans receivable related to each balance in the allowance for loan losses
Individually evaluated for impairment	1,258		1,259
Collectively evaluated for impairment	1,582,910		1,482,697
Acquired with deteriorated credit quality	27,996	[1]	29,786	[1]
Total loans	$1,612,164	[1]	$1,513,742	[1]
[1]	Loans net of ASC 310-30 discount.

Recovered_Sheet1

LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES (Details 9) (USD $)	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014		Dec. 31, 2014
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Net payable to the FDIC	$101,400,000
Net FDIC indemnification asset			27,600,000
FDIC indemnification asset/(Payable to FDIC, net)
Beginning balance	-96,106,000		74,708,000
Amortization	-1,542,000		-28,490,000
Reductions	-649,000	[1]	-11,842,000	[1]
Estimate of FDIC repayment	-3,114,000	[2]	-6,824,000	[2]
Ending Balance	-101,411,000		27,552,000
Loans Receivable
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Loans covered under shared-loss agreements	354,400,000				1,480,000,000
Loans Receivable | PCI loans
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Loans covered under shared-loss agreements	311,600,000				1,230,000,000
Changes in the accretable yield for the PCI loans
Beginning balance	311,688,000		461,545,000
Additions			6,745,000
Accretion	-30,569,000		-61,946,000
Changes in expected cash flows	12,036,000		24,112,000
Ending Balance	293,155,000		430,456,000
Loans Receivable | United Commercial Bank (UCB) | Covered Loans
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Percentage of eligible losses for which the FDIC is obligated to reimburse the Company	80.00%
Percentage of eligible losses in excess of a specified amount for which the FDIC is obligated to reimburse the Company	95.00%
Amount of eligible losses over which the FDIC is obligated to reimburse a higher percentage	$2,050,000,000
Percentage obligation to reimburse the FDIC for eligible recoveries related to covered assets	80.00%
Percentage obligation to reimburse the FDIC for eligible recoveries related to losses in excess of a specified amount on covered assets	95.00%
Loans Receivable | Washington First International Bank (WFIB) | Covered Loans
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Percentage of eligible losses for which the FDIC is obligated to reimburse the Company	80.00%
Percentage obligation to reimburse the FDIC for eligible recoveries related to covered assets	80.00%
[1]	Reductions relate to charge-offs, partial prepayments, loan payoffs and loan sales which result in a corresponding reduction of the indemnification asset.
[2]	This represents the change in the calculated estimate the Company will be required to pay the FDIC at the end of the FDIC shared-loss agreements, due to lower thresholds of losses.

Recovered_Sheet2

LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES (Details 10) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Loans Held for Sale
Loans held for sale	$196,111,000		$45,950,000
Loans receivable reclassified to loans held for sale	820,473,000	478,982,000
Write-down of loans transferred from loans held for investment to loans held for sale recorded to allowance for loan losses	1,700,000	0
Proceeds from total loans sold	679,800,000	183,600,000
Net gain from sale of loans held for sale during the period	$9,551,000	$6,196,000

INVESTMENTS_IN_QUALIFIED_AFFOR2

INVESTMENTS IN QUALIFIED AFFORDABLE HOUSING PARTNERSHIPS, NET, TAX CREDIT AND OTHER INVESTMENTS (Details) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014		Dec. 31, 2014
Impact of new accounting guidance
Investment in qualified affordable housing partnerships, net	$182,719			$178,962	[1]
Other assets - Deferred tax assets				389,601
Retained earnings	1,675,234			1,604,141	[1]
Noninterest expense - Amortization of tax credit and other investments	6,299	1,492	[1]
Income before taxes	146,826	116,163	[1]
Provision for income taxes	46,799	41,992	[1]
Net income	100,027	74,171	[1]
EARNINGS PER SHARE
BASIC (in dollars per share)	$0.70	$0.52	[1]
DILUTED (in dollars per share)	$0.69	$0.52	[1]
Previously Reported
Impact of new accounting guidance
Investment in qualified affordable housing partnerships, net				178,652
Other assets - Deferred tax assets				384,367
Retained earnings				1,598,598
Noninterest expense - Amortization of tax credit and other investments		5,964
Income before taxes		111,690
Provision for income taxes		34,949
Net income		$76,741
EARNINGS PER SHARE
BASIC (in dollars per share)		$0.54
DILUTED (in dollars per share)		$0.54
[1]	Prior periods were restated to reflect the retrospective application of adopting the new accounting guidance related to the Company?s investments in qualified affordable housing projects Accounting Standard Update ("ASU") 2014-01. See Note 10 of the Notes to Consolidated Financial Statements for additional information.

INVESTMENTS_IN_QUALIFIED_AFFOR3

INVESTMENTS IN QUALIFIED AFFORDABLE HOUSING PARTNERSHIPS, NET, TAX CREDIT AND OTHER INVESTMENTS (Details 2) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014		Dec. 31, 2014
Investments in qualified affordable housing partnership, net
Investment in qualified affordable housing partnerships, net	$182,719,000			$178,962,000	[1]
Accrued expenses and other liabilities - Unfunded commitments	50,884,000			43,311,000
Tax credits and other tax benefits recognized	8,775,000	7,792,000
Amortization expense included in provision for income taxes	6,244,000	5,357,000
Investments in tax credit and other investments
Investments in tax credit and other investments	117,000,000			110,100,000
Unfunded commitments for investments in tax credit and other investments	66,200,000			71,400,000
Noninterest expense - Amortization of tax credit and other investments	$6,299,000	$1,492,000	[1]
[1]	Prior periods were restated to reflect the retrospective application of adopting the new accounting guidance related to the Company?s investments in qualified affordable housing projects Accounting Standard Update ("ASU") 2014-01. See Note 10 of the Notes to Consolidated Financial Statements for additional information.

GOODWILL_AND_OTHER_INTANGIBLE_2

GOODWILL AND OTHER INTANGIBLE ASSETS (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
GOODWILL AND OTHER INTANGIBLE ASSETS
Goodwill	$469,433,000	$469,433,000	$458,467,000
Goodwill impairment	$0

GOODWILL_AND_OTHER_INTANGIBLE_3

GOODWILL AND OTHER INTANGIBLE ASSETS (Details 2) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Premiums on Acquired Deposits
Amortization of premiums on deposits acquired	$2,391,000	$2,500,000
Estimated Future Amortization Expense of Premiums on Acquired Deposits
Nine months ending December 31, 2015	6,842,000
Year ending December 31, 2016	8,086,000
Year ending December 31, 2017	6,935,000
Year ending December 31, 2018	5,883,000
Year ending December 31, 2019	4,864,000
Thereafter	10,307,000
Total	42,917,000
Premiums on acquired deposits
Premiums on Acquired Deposits
Gross carrying amount of premiums on acquired deposits	108,800,000		108,800,000
Accumulated amortization for premiums on acquired deposits	$65,900,000		$63,500,000

COMMITMENTS_AND_CONTINGENCIES_

COMMITMENTS AND CONTINGENCIES (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Credit Extensions
Allowance for unfunded loan commitments, off-balance sheet credit exposures and recourse provision	$15,600,000	$12,700,000
Undisbursed Loan Commitments
Credit Extensions
Loan	3,710,000,000	3,870,000,000
Commercial and Standby Letters of Credit
Credit Extensions
Commercial and standby letters of credit issued	$1,440,000,000	$1,250,000,000

COMMITMENTS_AND_CONTINGENCIES_1

COMMITMENTS AND CONTINGENCIES (Details 2) (USD $)	Mar. 31, 2015	Dec. 18, 2014	Dec. 31, 2014
F&F, LLC and 618 Investment, Inc. v. East West Bank | East West Bank
Litigation
Interim adjusted amount of the verdict		$36,600,000
Litigation accrual	32,600,000
Loans Sold or Securitized with Recourse
Guarantees
Principal amount of loans sold or securitized	237,700,000		249,800,000
Recourse reserve	673,000		2,200,000
Loans Sold or Securitized with Full Recourse | Residential | Single-family
Guarantees
Principal amount of loans sold or securitized	34,300,000		35,500,000
Loans Sold or Securitized with Limited Recourse | Residential | Multifamily
Guarantees
Principal amount of loans sold or securitized	$203,400,000		$214,300,000
Recourse provision limitation, maximum percentage of the top loss on the multifamily loans	4.00%

STOCKHOLDERS_EQUITY_AND_EARNIN2

STOCKHOLDERS' EQUITY AND EARNINGS PER SHARE (Details) (USD $)	3 Months Ended		0 Months Ended	3 Months Ended
In Millions, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Jan. 17, 2014	Dec. 31, 2014	Jan. 16, 2014
Class of Stock
Final consideration (in shares)		5,583,093
Quarterly Dividends
Dividends for common stock declared (in dollars per share)	$0.20	$0.18
MetroCorp
Class of Stock
Final consideration (in shares)			5,583,093
Final consideration in cash			$89.40
Fair value of warrants assumed			8.8
Cash paid to option holders			2.4
Number of warrants exercised	0
MetroCorp
Class of Stock
Number of shares under warrant					771,429
Common Stock
Class of Stock
Amount of stock repurchase approved by the Board of Directors	100
Quarterly Dividends
Dividends for common stock declared (in dollars per share)	$0.20			$0.18
Increase from prior quarterly dividend (in dollars per share)	$0.02
Increase from prior quarterly dividend (as a percent)	11.00%
Common stock cash dividends paid	$28.90	$25.90
Common Stock | MetroCorp
Class of Stock
Final consideration (in shares)			5,583,093
Number of shares under warrant			230,282

STOCKHOLDERS_EQUITY_AND_EARNIN3

STOCKHOLDERS' EQUITY AND EARNINGS PER SHARE (Details 2) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Earnings per share calculations
Net income	$100,027	$74,171	[1]
Less: Earnings allocated to participating securities	-3	-160
Basic EPS - income allocated to common stockholders	100,024	74,011	[1]
Effect of dilutive securities:
Restricted stock units	106	80
Diluted EPS - income allocated to common stockholders	$100,130	$74,091	[1]
Number of Shares
Weighted average shares outstanding	143,655	141,962
Effect of dilutive securities on weighted average shares outstanding
Stock options (in shares)	6	79
Restricted stock units (in shares)	533	447
Warrants (in shares)	155	144
Total weighted average diluted shares outstanding	144,349	142,632
Earnings per share available to common stockholders
Basic EPS - income allocated to common stockholders (in dollars per share)	$0.70	$0.52	[1]
Diluted EPS - income allocated to common stockholders (in dollars per share)	$0.69	$0.52	[1]
[1]	Prior periods were restated to reflect the retrospective application of adopting the new accounting guidance related to the Company?s investments in qualified affordable housing projects Accounting Standard Update ("ASU") 2014-01. See Note 10 of the Notes to Consolidated Financial Statements for additional information.

STOCKHOLDERS_EQUITY_AND_EARNIN4

STOCKHOLDERS' EQUITY AND EARNINGS PER SHARE (Details 3)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share
Excluded from the computation of diluted EPS (in shares)		81
Restricted Stock Awards
Antidilutive Securities Excluded from Computation of Earnings Per Share
Excluded from the computation of diluted EPS (in shares)	170	168

STOCKHOLDERS_EQUITY_AND_EARNIN5

STOCKHOLDERS' EQUITY AND EARNINGS PER SHARE (Details 4) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Statement
Balance, beginning of the period	$4,237	($30,459)
Net unrealized gains (losses) arising during period	11,872	15,405
Less: reclassification adjustment for gains included in net income	-2,554	-1,983
Net unrealized gains (losses)	9,318	13,422
Balance, end of the period	13,555	-17,037
Available-for-Sale Investment Securities
Statement
Balance, beginning of the period	4,176	-30,538
Net unrealized gains (losses) arising during period	11,879	15,422
Less: reclassification adjustment for gains included in net income	-2,554	-1,983
Net unrealized gains (losses)	9,325	13,439
Balance, end of the period	13,501	-17,099
Other Investments
Statement
Balance, beginning of the period	61	79
Net unrealized gains (losses) arising during period	-7	-17
Net unrealized gains (losses)	-7	-17
Balance, end of the period	$54	$62

STOCKHOLDERS_EQUITY_AND_EARNIN6

STOCKHOLDERS' EQUITY AND EARNINGS PER SHARE (Details 5) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015		Mar. 31, 2014
Unrealized gains on available-for-sale investment securities:
Net unrealized gains arising during period, before-tax amount	$20,482		$26,590
Less: reclassification adjustment for gains included in net income, before-tax amount	-4,404	[1]	-3,418	[1]
Net unrealized gains, before-tax amount	16,078		23,172
Unrealized losses on other investments:
Net unrealized losses arising during period, before-tax amount	-12		-29
Net unrealized losses, before-tax amount	-12		-29
Other comprehensive income, before-tax amount	16,066		23,143
Unrealized gains on available-for-sale investment securities:
Net unrealized gains arising during period, tax expense or benefit	-8,603		-11,168
Less: reclassification adjustment for gains included in net income, tax expense or benefit	1,850	[1]	1,435	[1]
Net unrealized gains, tax expense or benefit	-6,753		-9,733
Unrealized losses on other investments:
Net unrealized losses arising during period, tax expense or benefit	5		12
Net unrealized losses, tax expense or benefit	5		12
Other comprehensive income, tax expense or benefit	-6,748		-9,721
Unrealized gains on available-for-sale investment securities:
Net unrealized gains arising during period, net-of-tax amount	11,879		15,422
Less: reclassification adjustment for gains included in net income, net-of-tax amount	-2,554	[1]	-1,983	[1]
Net unrealized gains, net-of-tax amount	9,325		13,439
Unrealized losses on other investments:
Net unrealized losses arising during period, net-of-tax amount	-7		-17
Net unrealized losses, net-of-tax amount	-7		-17
Other comprehensive income	$9,318		$13,422
[1]	The pretax amount is reported in net gains on sales of available-for-sale investment securities in the consolidated statements of income.

SEGMENT_INFORMATION_Details

SEGMENT INFORMATION (Details)	3 Months Ended
	Mar. 31, 2015
	item
BUSINESS SEGMENTS
Number of operating segments	3
Number of business divisions	3
Number of segment whom broad administrative support are provided	2

SEGMENT_INFORMATION_Details_2

SEGMENT INFORMATION (Details 2) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015		Mar. 31, 2014		Dec. 31, 2014
Segment Reporting Information
Interest income	$263,261		$286,173
Charge for funds used	-70,094		-60,496
Interest spread on funds used	193,167		225,677
Interest expense	-27,544		-28,207
Credit on funds provided	70,094		60,496
Interest spread on funds provided	42,550		32,289
Net interest income (loss)	235,717		257,966
Provision for loan losses	4,987		6,933
Depreciation, amortization and accretion	4,127	[1]	9,064	[1],[2]
Goodwill	469,433		458,467		469,433
Segment pre-tax profit	146,826		116,163	[2]
Segment assets	29,906,835		27,400,604	[2]	28,743,592	[2]
Retail Banking
Segment Reporting Information
Interest income	87,446		98,724
Charge for funds used	-23,298		-16,045
Interest spread on funds used	64,148		82,679
Interest expense	-12,224		-11,711
Credit on funds provided	57,668		48,193
Interest spread on funds provided	45,444		36,482
Net interest income (loss)	109,592		119,161
Provision for loan losses	731		2,652
Depreciation, amortization and accretion	1,682	[1]	2,571	[1],[2]
Goodwill	357,207		354,163
Segment pre-tax profit	52,935		52,170	[2]
Segment assets	7,540,501		7,877,996	[2]
Commercial Banking
Segment Reporting Information
Interest income	158,786		169,076
Charge for funds used	-37,351		-21,328
Interest spread on funds used	121,435		147,748
Interest expense	-4,263		-3,280
Credit on funds provided	8,016		8,436
Interest spread on funds provided	3,753		5,156
Net interest income (loss)	125,188		152,904
Provision for loan losses	4,256		4,281
Depreciation, amortization and accretion	-10,477	[1]	-3,328	[1],[2]
Goodwill	112,226		104,304
Segment pre-tax profit	93,175		86,931	[2]
Segment assets	15,491,368		13,661,149	[2]
Other
Segment Reporting Information
Interest income	17,029		18,373
Charge for funds used	-9,445		-23,123
Interest spread on funds used	7,584		-4,750
Interest expense	-11,057		-13,216
Credit on funds provided	4,410		3,867
Interest spread on funds provided	-6,647		-9,349
Net interest income (loss)	937		-14,099
Depreciation, amortization and accretion	12,922	[1]	9,821	[1],[2]
Segment pre-tax profit	716		-22,938	[2]
Segment assets	$6,874,966		$5,861,459	[2]
[1]	Includes amortization and accretion related to the FDIC indemnification asset.
[2]	Prior periods were restated to reflect the retrospective application of adopting the new accounting guidance related to the Company?s investments in qualified affordable housing projects Accounting Standard Update ("ASU") 2014-01. See Note 10 of the Notes to Consolidated Financial Statements for additional information.

SUBSEQUENT_EVENTS_Details

SUBSEQUENT EVENTS (Details) (USD $)	3 Months Ended		1 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Apr. 30, 2015
Subsequent events
DIVIDENDS DECLARED PER COMMON SHARE (in dollars per share)	$0.20	$0.18
Subsequent event
Subsequent events
DIVIDENDS DECLARED PER COMMON SHARE (in dollars per share)			$0.20