East West Bancorp (EWBC) 10-Q 5 Aug 16 2016 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2016	Jul. 31, 2016
Document and Entity Information
Entity Registrant Name	EAST WEST BANCORP INC
Entity Central Index Key	1,069,157
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Jun. 30, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding		144,103,150

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
ASSETS
Cash and cash equivalents	$ 1,592,796	$ 1,360,887
Short-term investments	229,979	299,916
Securities purchased under resale agreements (“resale agreements”)	1,850,000	1,600,000
Available-for-sale investment securities, at fair value	3,240,332	3,773,226
Held-to-maturity investment security, at cost (fair value of $158,279 in 2016)	159,208	0
Loans held for sale	51,290	31,958
Loans held-for-investment (net of allowance for loan losses of $266,768 in 2016 and $264,959 in 2015)	23,969,599	23,378,789
Investment in Federal Home Loan Bank (“FHLB”) stock, at cost	18,158	28,770
Investment in Federal Reserve Bank stock, at cost	55,216	54,932
Investments in qualified affordable housing partnerships, net	179,657	193,978
Premises and equipment (net of accumulated depreciation of $106,919 in 2016 and $100,060 in 2015)	163,423	166,993
Goodwill	469,433	469,433
Other assets	973,121	992,040
TOTAL	32,952,212	32,350,922
Customer deposits:
Noninterest-bearing	9,487,180	8,656,805
Interest-bearing	18,730,063	18,819,176
Total deposits	28,217,243	27,475,981
Short-term borrowings	29,499	0
FHLB advances	320,526	1,019,424
Securities sold under repurchase agreements (“repurchase agreements”)	200,000	0
Long-term debt	196,204	206,084
Accrued expenses and other liabilities	691,830	526,483
Total liabilities	29,655,302	29,227,972
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS’ EQUITY
Common stock, $0.001 par value, 200,000,000 shares authorized; 164,535,706 and 164,246,517 shares issued in 2016 and 2015, respectively.	164	164
Additional paid-in capital	1,712,572	1,701,295
Retained earnings	2,025,142	1,872,594
Treasury stock at cost — 20,433,561 shares in 2016 and 20,337,284 shares in 2015.	(439,256)	(436,162)
Accumulated other comprehensive loss (“AOCI”), net of tax	(1,712)	(14,941)
Total stockholders’ equity	3,296,910	3,122,950
TOTAL	$ 32,952,212	$ 32,350,922

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
ASSETS
Held-to-maturity investment security, fair value	$ 158,279
Allowance for loan losses	266,768	$ 264,959
Premises and equipment, accumulated depreciation	$ 106,919	$ 100,060
STOCKHOLDERS’ EQUITY
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	164,535,706	164,246,517
Treasury stock, shares	20,433,561	20,337,284

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
INTEREST AND DIVIDEND INCOME
Loans receivable, including fees	$ 254,331	$ 234,049	$ 507,873	$ 475,615
Investment securities	12,852	9,484	24,045	19,668
Resale agreements	7,968	4,680	14,645	9,529
Investment in FHLB and Federal Reserve Bank stock	602	2,306	1,397	3,542
Due from banks and short-term investments	3,112	4,926	7,077	10,352
Total interest and dividend income	278,865	255,445	555,037	518,706
INTEREST EXPENSE
Customer deposits	20,362	18,195	39,659	35,158
Short-term borrowings	169	18	178	18
FHLB advances	1,292	1,049	2,792	2,082
Repurchase agreements	2,196	7,533	4,122	15,939
Long-term debt	1,262	1,158	2,498	2,300
Total interest expense	25,281	27,953	49,249	55,497
Net interest income before provision for credit losses	253,584	227,492	505,788	463,209
Provision for credit losses	6,053	3,494	7,493	8,481
Net interest income after provision for credit losses	247,531	223,998	498,295	454,728
NONINTEREST INCOME
Branch fees	10,353	9,791	20,575	19,175
Letters of credit fees and foreign exchange income	10,943	8,825	20,496	17,531
Ancillary loan fees	4,285	2,812	7,862	5,468
Wealth management fees	2,778	4,757	5,829	9,936
Derivative commission income	3,364	2,733	6,630	7,763
Changes in FDIC indemnification asset and receivable/payable	0	(6,668)	0	(15,090)
Net gains on sales of loans	2,882	5,280	4,809	14,831
Net gains on sales of available-for-sale investment securities	2,836	5,554	6,678	9,958
Other fees and operating income	6,823	7,509	11,898	15,147
Total noninterest income	44,264	40,593	84,777	84,719
NONINTEREST EXPENSE
Compensation and employee benefits	73,287	62,860	145,124	127,113
Occupancy and equipment expense	15,748	15,185	30,163	30,628
Amortization of tax credit and other investments	14,006	2,997	28,161	9,296
Amortization of premiums on deposits acquired	2,050	2,337	4,154	4,728
Deposit insurance premiums and regulatory assessments	5,473	3,341	10,891	8,997
Deposit related expenses	2,273	2,412	4,593	4,864
Other real estate owned (“OREO”) expense (income)	1,023	(5,081)	1,551	(6,107)
Legal expense	4,346	4,134	7,353	11,004
Data processing	3,295	2,377	5,983	4,994
Consulting expense	5,981	2,182	14,433	4,613
Repurchase agreements’ extinguishment costs	0	6,625	0	6,625
Other operating expense	21,397	20,801	43,079	41,445
Total noninterest expense	148,879	120,170	295,485	248,200
INCOME BEFORE INCOME TAXES	142,916	144,421	287,587	291,247
INCOME TAX EXPENSE	39,632	45,673	76,787	92,472
NET INCOME	$ 103,284	$ 98,748	$ 210,800	$ 198,775
EARNINGS PER SHARE (“EPS”)
BASIC (in dollars per share)	$ 0.72	$ 0.69	$ 1.46	$ 1.38
DILUTED (in dollars per share)	$ 0.71	$ 0.68	$ 1.45	$ 1.38
WEIGHTED AVERAGE NUMBER OF SHARES OUTSTANDING
BASIC (in shares)	144,101	143,846	144,029	143,751
DILUTED (in shares)	145,078	144,480	144,973	144,408
DIVIDENDS DECLARED PER COMMON SHARE (in dollars per share)	$ 0.2	$ 0.2	$ 0.4	$ 0.4

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 103,284	$ 98,748	$ 210,800	$ 198,775
Other comprehensive income (loss), net of tax:
Net change in unrealized gains (losses) on available-for-sale investment securities	4,984	(8,125)	17,900	1,193
Foreign currency translation adjustments	(4,638)	0	(4,671)	0
Other comprehensive income (loss)	346	(8,125)	13,229	1,193
COMPREHENSIVE INCOME	$ 103,630	$ 90,623	$ 224,029	$ 199,968

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Common Stock and Additional Paid-in Capital	Retained Earnings	Treasury Stock	AOCI, net of tax
Beginning balance (in shares) at Dec. 31, 2014		143,582,229
Beginning balance at Dec. 31, 2014	$ 2,856,111		$ 1,677,931	$ 1,604,141	$ (430,198)	$ 4,237
Increase (Decrease) in Stockholders' Equity
Net income	198,775			198,775
Other comprehensive income	1,193					1,193
Stock compensation costs	7,652		7,652
Tax benefit from stock compensation plans, net	3,196		3,196
Net activity of common stock pursuant to various stock compensation plans and agreements (in shares)		266,807
Net activity of common stock pursuant to various stock compensation plans and agreements	(4,018)		1,769		(5,787)
Common stock dividends	(57,961)			(57,961)
Ending beginning (in shares) at Jun. 30, 2015		143,849,036
Ending balance at Jun. 30, 2015	3,004,948		1,690,548	1,744,955	(435,985)	5,430
Beginning balance at Mar. 31, 2015						13,555
Increase (Decrease) in Stockholders' Equity
Net income	98,748
Other comprehensive income	(8,125)					(8,125)
Tax benefit from stock compensation plans, net			51
Ending beginning (in shares) at Jun. 30, 2015		143,849,036
Ending balance at Jun. 30, 2015	3,004,948		1,690,548	1,744,955	(435,985)	5,430
Beginning balance (in shares) at Dec. 31, 2015		143,909,233
Beginning balance at Dec. 31, 2015	3,122,950		1,701,459	1,872,594	(436,162)	(14,941)
Increase (Decrease) in Stockholders' Equity
Net income	210,800			210,800
Other comprehensive income	13,229					13,229
Stock compensation costs	9,210		9,210
Tax benefit from stock compensation plans, net	1,005		1,005
Net activity of common stock pursuant to various stock compensation plans and agreements (in shares)		192,912
Net activity of common stock pursuant to various stock compensation plans and agreements	(2,032)		1,062		(3,094)
Common stock dividends	(58,252)			(58,252)
Ending beginning (in shares) at Jun. 30, 2016		144,102,145
Ending balance at Jun. 30, 2016	3,296,910		1,712,736	2,025,142	(439,256)	(1,712)
Beginning balance at Mar. 31, 2016						(2,058)
Increase (Decrease) in Stockholders' Equity
Net income	103,284
Other comprehensive income	346					346
Tax benefit from stock compensation plans, net			19
Ending beginning (in shares) at Jun. 30, 2016		144,102,145
Ending balance at Jun. 30, 2016	$ 3,296,910		$ 1,712,736	$ 2,025,142	$ (439,256)	$ (1,712)

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 210,800	$ 198,775
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	55,192	30,801
(Accretion) of discount and amortization of premiums, net	(29,960)	(29,504)
Changes in FDIC indemnification asset and receivable/payable	0	15,090
Stock compensation costs	9,210	7,652
Deferred tax expenses	4,357	10,056
Tax benefit from stock compensation plans, net	(1,005)	(3,196)
Provision for credit losses	7,493	8,481
Net gains on sales of loans	(4,809)	(14,831)
Net gains on sales of available-for-sale investment securities	(6,678)	(9,958)
Net gains on sales of OREO and premises and equipment	(2,435)	(9,041)
Originations and purchases of loans held for sale	(3,364)	(442)
Proceeds from sales and paydowns/payoffs in loans held for sale	4,794	1,863
Repurchase agreements’ extinguishment costs	0	6,625
Net payments to FDIC shared-loss agreements	0	(1,331)
Net change in accrued interest receivable and other assets	(4,582)	76,621
Net change in accrued expenses and other liabilities	32,317	3,145
Other net operating activities	(27)	(1,346)
Total adjustments	60,503	90,685
Net cash provided by operating activities	271,303	289,460
Net (increase) decrease in:
Loans receivable	(113,126)	(993,413)
Short-term investments	65,113	63,876
Investments in qualified affordable housing partnerships, tax credit and other investments	(44,672)	(31,977)
Purchases of:
Resale agreements	(1,100,000)	(1,345,000)
Available-for-sale investment securities	(693,406)	(1,221,706)
Loans receivable (including loan participations)	(933,820)	(365,552)
Premises and equipment	(6,485)	(2,662)
Proceeds from sales of:
Available-for-sale investment securities	864,743	473,062
Loans receivable (including loan participations)	398,010	1,020,236
Premises and equipment	7,276	4,345
Paydowns and maturities of resale agreements	1,050,000	1,175,000
Repayments, maturities and redemptions of available-for-sale investment securities	443,641	396,809
Redemption of FHLB stock	10,614	13,084
Other net investing activities	2,431	15,269
Net cash used in investing activities	(49,681)	(798,629)
Net increase in:
Deposits	752,849	1,519,447
Short-term borrowings	30,064	3,271
Proceeds from:
Issuance of common stock pursuant to various stock plans and agreements	1,062	1,769
Payments for:
Repayment of FHLB advances	(700,000)	0
Repayment of long-term debt	(10,000)	(10,000)
Extinguishment of repurchase agreements	0	(106,625)
Repurchase of vested shares due to employee tax liability	(3,094)	(5,787)
Cash dividends	(58,152)	(58,073)
Tax benefit from stock compensation plans, net	1,005	3,196
Net cash provided by financing activities	13,734	1,347,198
Effect of exchange rate changes on cash and cash equivalents	(3,447)	0
NET INCREASE IN CASH AND CASH EQUIVALENTS	231,909	838,029
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	1,360,887	1,039,885
CASH AND CASH EQUIVALENTS, END OF PERIOD	1,592,796	1,877,914
Cash paid during the period for:
Interest	50,044	55,036
Income tax payments	6,359	19,174
Noncash investing and financing activities:
Loans transferred to loans held for sale, net	575,804	1,156,180
Transfers to OREO	731	4,629
Loans to facilitate sale of OREO	0	1,750
Held-to-maturity investment security retained from securitization of loans	160,135	0
Dividends payable	100	112
Unsettled purchases of available-for-sale investment securities	57,711	0
Unsettled purchases of loans receivable	$ 106,114	$ 0

BASIS OF PRESENTATION

BASIS OF PRESENTATION	6 Months Ended
	Jun. 30, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
BASIS OF PRESENTATION	NOTE 1 — BASIS OF PRESENTATION The unaudited interim Consolidated Financial Statements in this Form 10-Q include the accounts of East West and its subsidiaries, East West Bank and subsidiaries (referred to herein as “East West Bank” or the “Bank”) and East West Insurance Services, Inc. Intercompany transactions and balances have been eliminated in consolidation. As of June 30, 2016 , East West has six wholly-owned subsidiaries that are statutory business trusts (the “Trusts”). In accordance with FASB Accounting Standards Codification (“ASC”) Topic 810, the Trusts are not consolidated into the Company. The unaudited interim Consolidated Financial Statements presented in accordance with United States Generally Accepted Accounting Principles (“U.S. GAAP”), applicable guidelines prescribed by regulatory authorities, and general practices within the banking industry, reflect all adjustments that, in the opinion of management, are necessary for fair statement of the interim period financial statements. Certain prior year balances and notes have been reclassified to conform to current period presentation. 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 thereto, included in the Company’s 2015 Form 10-K.

CURRENT ACCOUNTING DEVELOPMENTS

CURRENT ACCOUNTING DEVELOPMENTS	6 Months Ended
	Jun. 30, 2016
Accounting Policies [Abstract]
CURRENT ACCOUNTING DEVELOPMENTS	NOTE 2 — CURRENT ACCOUNTING DEVELOPMENTS NEW ACCOUNTING PRONOUNCEMENTS ADOPTED In February 2015, the FASB issued Accounting Standards Update (“ASU”) 2015-02, Consolidation (Topic 810): Amendments to the Consolidation Analysis that changes the analysis a reporting entity must perform to determine whether it should consolidate certain types of legal entities. The amended guidance 1) modifies the evaluation of whether limited partnerships and similar legal entities are VIEs or voting interest entities; 2) eliminates the presumption that a general partner should consolidate a limited partnership; 3) affects the consolidation analysis of reporting entities that are involved with VIEs, particularly those that have fee arrangements and related party relationships; and 4) provides a scope exception from consolidation guidance for reporting entities that are required to comply with or operate in accordance with requirements that are similar to those in Rule 2a7 of the Investment Company Act of 1940 for registered money market funds. The Company adopted this amended guidance in the first quarter of 2016 and the adoption of this guidance did not have a material impact on the Company’s 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 adopted this guidance retrospectively in the first quarter of 2016. The adoption of this guidance did not have a material impact on the Company’s Consolidated Financial Statements. In April 2015, the FASB issued ASU 2015-05, Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement. ASU 2015-05 amends ASC 350-40 and requires the Company to determine whether a cloud computing arrangement contains a software license. If the arrangement contains a software license, the Company should account for the fees related to the software license element consistent with how the acquisitions of other software licenses are accounted for under ASC 350-40. If the arrangement does not contain a software license, the Company should account for the arrangement as a service contract. The Company adopted this guidance prospectively to all arrangements entered into or materially modified in the first quarter of 2016. The adoption of this guidance did not have a material impact on the Company’s Consolidated Financial Statements. 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 clarifies the principles for recognizing revenue and replaces nearly all existing revenue recognition guidance in U.S. GAAP. Quantitative and qualitative disclosures regarding the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers are also required. ASU 2014-09 as amended by ASU 2015-14, ASU 2016-08, ASU 2016-10 and ASU 2016-12, is effective for interim and annual periods beginning after December 15, 2017 and is applied on either a modified retrospective or full retrospective basis. Early adoption is permitted for interim and annual periods beginning after December 15, 2016. The Company’s preliminary analysis suggests that the adoption of this accounting guidance is not expected to have a material impact on the Company’s Consolidated Financial Statements. However, there are many aspects of the new accounting guidance that are still being interpreted and the FASB has recently issued updates to certain aspects of guidance. The results of our materiality analysis may change based on the conclusion reached as to the application of the new guidance. In January 2016, the FASB issued ASU 2016-01, Financial Instruments—Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities. ASU 2016-01 requires equity investments, except those accounted for under the equity method of accounting or consolidated, to be measured at fair value with changes recognized in net income. If there is no readily determinable fair value, the guidance allows entities the ability to measure investments at cost less impairment, whereby impairment is based on a qualitative assessment. The guidance eliminates the requirement to disclose the methods and significant assumptions used to estimate the fair value of financial instruments measured at amortized cost and changes the presentation of financial assets and financial liabilities on the Consolidated Balance Sheet or in the footnotes. If an entity has elected the fair value option to measure liabilities, the new accounting guidance requires the portion of the change in the fair value of a liability resulting from credit risk to be presented in other comprehensive income. The Company has not elected to measure any of its liabilities at fair value. ASU 2016-01 is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption is not permitted except for certain specific changes under the fair value option guidance. To adopt the amendments, the Company is required to make a cumulative-effect adjustment to the consolidated balance sheet as of the beginning of the fiscal year in which the guidance is effective. However, the amendments related to equity securities without readily determinable fair values (including disclosure requirements) should be applied prospectively to equity investments that exist as of the adoption date. The Company is currently evaluating the impact on its Consolidated Financial Statements. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842), which is intended to increase transparency and comparability in the accounting for lease transactions. ASU 2016-02 requires lessees to recognize all leases longer than twelve months on the Consolidated Balance Sheet as lease assets and lease liabilities and quantitative and qualitative disclosures regarding key information about leasing arrangements. Lessor accounting is largely unchanged. ASU 2016-02 is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years with an option to early adopt. The Company is currently evaluating the impact on its Consolidated Financial Statements. In March 2016, the FASB issued ASU 2016-05, Derivatives and Hedging (Topic 815): Effect of Derivative Contract Novations on Existing Hedge Accounting Relationships , to clarify that a change in the counterparty to a derivative instrument that has been designated as the hedging instrument in an existing hedging relationship would not be considered a termination of the derivative instrument or a change in a critical term of the hedging relationship provided that all other hedge accounting criteria in ASC 815 continue to be met. This clarification applies to both cash flow and fair value hedging relationships. ASU 2016-05 is effective for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years with an option to early adopt. The Company has an option to adopt the amendments of this ASU either on a prospective basis or modified retrospective basis. The Company does not expect the adoption of this guidance to have a material impact on its Consolidated Financial Statements. In March 2016, the FASB issued ASU 2016-06, Derivatives and Hedging (Topic 815): Contingent Put and Call Options in Debt Instruments that requires an entity to use a four step decision model when assessing contingent call (put) options that can accelerate the payment of principal on debt instruments to determine whether they are clearly and closely related to their debt hosts. ASU 2016-06 will be effective for interim and annual reporting periods beginning after December 15, 2016 and must be implemented using a modified retrospective basis. Early adoption is permitted. The Company does not expect the adoption of this guidance to have a material impact on its Consolidated Financial Statements. In March 2016, the FASB issued ASU 2016-07, Investments—Equity Method and Joint Ventures (Topic 323): Simplifying the Transition to the Equity Method of Accounting, to eliminate the requirement for an investor to retroactively apply the equity method when its increase in ownership interest (or degree of influence) in an investee triggers equity method accounting. The amendments in ASU 2016-07 also require that an entity that has an available-for-sale equity security that becomes qualified for the equity method of accounting recognize through earnings the unrealized holding gain or loss in AOCI at the date the investment becomes qualified for use of the equity method. ASU 2016-07 is effective for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years and should be applied prospectively. Early adoption is not permitted. The Company is currently evaluating the impact on its Consolidated Financial Statements. In March 2016, the FASB issued ASU 2016-09, Compensation—Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting, to simplify several aspects of the accounting for share-based payment transactions, including the accounting for income taxes, forfeitures, statutory tax withholding requirements, as well as classification in the statement of cash flows. ASU 2016-09 also eliminated certain guidance in ASC 718 on when awards cease to be within the scope of ASC 718 and instead become subject to other U.S. GAAP requirements. ASU 2016-09 is effective for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years. Early adoption is permitted. The Company is currently evaluating the impact on its Consolidated Financial Statements. In June 2016, the FASB issued ASU 2016-13 Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments to introduce a new approach based on expected losses to estimate credit losses on certain types of financial instruments, which modifies the impairment model for available-for-sale debt securities and provides for a simplified accounting model for purchased financial assets with credit deterioration since their origination. The new “expected credit loss” impairment model will apply to most financial assets measured at amortized cost and certain other instruments, including trade and other receivables, loans, held-to-maturity debt securities, net investments in leases and off-balance-sheet credit exposures. ASU 2016-13 also expands the disclosure requirements regarding an entity’s assumptions, models and methods for estimating the allowance for loans and lease losses and requires disclosure of the amortized cost balance for each class of financial asset by credit quality indicator, disaggregated by the year of origination (i.e., by vintage year). ASU 2016-13 is effective for the fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Earlier adoption is permitted as of the fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. The Company is currently evaluating the impact on its Consolidated Financial Statements.

FAIR VALUE MEASUREMENT AND FAIR

FAIR VALUE MEASUREMENT AND FAIR VALUE OF FINANCIAL INSTRUMENTS	6 Months Ended
	Jun. 30, 2016
Fair Value Disclosures [Abstract]
FAIR VALUE MEASUREMENT AND FAIR VALUE OF FINANCIAL INSTRUMENTS	NOTE 3 — 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. The Company utilizes valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs. The fair value hierarchy noted below is based on the quality and reliability of the information used to determine fair value. The fair value hierarchy gives the highest priority to quoted prices available in active markets and the lowest priority to data lacking transparency. The fair value of the Company’s assets and liabilities is 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. The Company’s assets and liabilities are classified in their entirety based on the lowest level of input that is significant to their fair value measurements. The following tables present financial assets and liabilities that are measured at fair value on a recurring basis as of June 30, 2016 and December 31, 2015 : Assets (Liabilities) Measured at Fair Value on a Recurring Basis ($ in thousands) Fair Value Measurements Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Available-for-sale investment securities: U.S. Treasury securities $ 488,560 $ 488,560 $ — $ — U.S. government agency and U.S. government sponsored enterprise debt securities 703,929 — 703,929 — U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities: Commercial mortgage-backed securities 308,364 — 308,364 — Residential mortgage-backed securities 1,058,901 — 1,058,901 — Municipal securities 153,903 — 153,903 — Non-agency residential mortgage-backed securities: Investment grade 55,975 — 55,975 — Corporate debt securities: Investment grade 416,864 — 416,864 — Non-investment grade 8,408 — 8,408 — Other securities 45,428 36,496 8,932 — Total available-for-sale investment securities $ 3,240,332 $ 525,056 $ 2,715,276 $ — Derivative assets: Foreign currency forward contracts $ 1,732 $ — $ 1,732 $ — Interest rate swaps and options $ 157,035 $ — $ 157,035 $ — Foreign exchange contracts $ 10,078 $ — $ 10,078 $ — Derivative liabilities: Interest rate swaps on certificates of deposit $ (810 ) $ — $ (810 ) $ — Interest rate swaps and options $ (159,776 ) $ — $ (159,776 ) $ — Foreign exchange contracts $ (8,634 ) $ — $ (8,634 ) $ — Credit risk participation agreements (“RPAs”) $ (12 ) $ — $ (12 ) $ — Assets (Liabilities) Measured at Fair Value on a Recurring Basis ($ in thousands) Fair Value Measurements Quoted Prices in Significant Significant Unobservable Inputs (Level 3) Available-for-sale investment securities: U.S. Treasury securities $ 998,515 $ 998,515 $ — $ — U.S. government agency and U.S. government sponsored enterprise debt securities 768,849 — 768,849 — U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities: Commercial mortgage-backed securities 351,662 — 351,662 — Residential mortgage-backed securities 997,396 — 997,396 — Municipal securities 175,649 — 175,649 — Non-agency residential mortgage-backed securities: Investment grade 62,393 — 62,393 — Corporate debt securities: Investment grade 364,713 — 364,713 — Non-investment grade 9,642 — 9,642 — Other securities 44,407 35,635 8,772 — Total available-for-sale investment securities $ 3,773,226 $ 1,034,150 $ 2,739,076 $ — Derivative assets: Foreign currency forward contracts $ 2,365 $ — $ 2,365 $ — Interest rate swaps and options $ 67,215 $ — $ 67,215 $ — Foreign exchange contracts $ 10,254 $ — $ 10,254 $ — Derivative liabilities: Interest rate swaps on certificates of deposit $ (5,213 ) $ — $ (5,213 ) $ — Interest rate swaps and options $ (67,325 ) $ — $ (67,325 ) $ — Foreign exchange contracts $ (9,350 ) $ — $ (9,350 ) $ — RPAs $ (4 ) $ — $ (4 ) $ — 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. There were no assets or liabilities measured using significant unobservable inputs (Level 3) on a recurring basis for the three and six months ended June 30, 2016 . The following table presents 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 and six months ended June 30, 2015 : ($ in thousands) Three Months Ended June 30, Six Months Ended June 30, 2015 2015 Corporate Debt Grade Embedded Derivative Corporate Debt Grade Embedded Derivative Beginning balance $ — $ (3,412 ) $ 6,528 $ (3,392 ) Total gains (losses) for the period: Included in earnings (1) — — 960 (20 ) Included in other comprehensive income (2) — — 922 — Sales and settlements: Sales — — (7,219 ) — Settlements — 3,412 (98 ) 3,412 Transfers in and/or out of Level 3 — — (1,093 ) — Ending balance $ — $ — $ — $ — Change in unrealized losses included in earnings relating to assets and liabilities held for the period $ — $ — $ — $ — (1) Net gains or losses (realized and unrealized) of corporate debt securities and embedded derivative liabilities are included in Net gains on sales of available-for-sale investment securities and Other operating expense , respectively, on 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 , on the Consolidated Statements of Comprehensive Income. 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 become unobservable or observable 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. There were no transfers of assets measured on a recurring basis in and out of Level 1, Level 2, or Level 3 for the three and six months ended June 30, 2016 , and three months ended June 30, 2015 . During the six months ended June 30, 2015 , the Company transferred $1.1 million of pooled trust preferred securities measured on a recurring basis out of Level 3 into Level 2 due to increased market liquidity and price observability. Assets measured at fair value on a nonrecurring basis include certain non-purchased credit impaired (“non-PCI”) loans that were impaired, OREO, and loans held for sale. These fair value adjustments result from impairments recognized during the period on certain non-PCI impaired loans, application of fair value less cost to sell on OREO and application of lower of cost or market (“LOCOM”) valuation on loans held for sale. The following tables present the carrying amounts of all assets that were still held as of June 30, 2016 and December 31, 2015 for which a nonrecurring fair value measurement was recorded: Assets Measured at Fair Value on a Nonrecurring Basis ($ in thousands) Fair Value Measurements Quoted Prices in Significant Significant Unobservable Inputs (Level 3) Non-PCI impaired loans: Commercial real estate (“CRE”) $ 21,443 $ — $ — $ 21,443 Commercial and industrial (“C&I”) 50,362 — — 50,362 Residential 15,957 — — 15,957 Consumer 1,531 — — 1,531 Total non-PCI impaired loans $ 89,293 $ — $ — $ 89,293 OREO $ 3,647 $ — $ — $ 3,647 Loans held for sale $ 27,895 $ — $ 27,895 $ — Assets Measured at Fair Value on a Nonrecurring Basis ($ in thousands) Fair Value Measurements Quoted Prices in Significant Significant Unobservable Inputs (Level 3) Non-PCI impaired loans: CRE $ 17,252 $ — $ — $ 17,252 C&I 35,558 — — 35,558 Residential 16,472 — — 16,472 Consumer 1,180 — — 1,180 Total non-PCI impaired loans $ 70,462 $ — $ — $ 70,462 OREO $ 4,929 $ — $ — $ 4,929 Loans held for sale $ 29,238 $ — $ 29,238 $ — The following table presents fair value adjustments of certain assets measured on a nonrecurring basis recognized during the three and six months ended and still held as of June 30, 2016 and 2015 : Three Months Ended June 30, Six Months Ended June 30, ($ in thousands) 2016 2015 2016 2015 Non-PCI impaired loans: CRE $ (261 ) $ (445 ) $ 1,908 $ (905 ) C&I (4,693 ) (6,454 ) (9,149 ) (9,303 ) Residential (4 ) (216 ) 27 (341 ) Consumer (2 ) (1 ) 14 (1 ) Total non-PCI impaired loans $ (4,960 ) $ (7,116 ) $ (7,200 ) $ (10,550 ) OREO $ (1,073 ) $ (200 ) $ (1,529 ) $ (258 ) Loans held for sale $ — $ (517 ) $ (2,351 ) $ (517 ) 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 June 30, 2016 and December 31, 2015 : ($ in thousands) Fair Value Valuation Unobservable Range of Inputs Weighted June 30, 2016 Non-PCI impaired loans $ 48,169 Discounted cash flow Discount rate 0% — 84% 20% $ 41,124 Market comparables Discount rate (1) 0% — 100% 18% OREO $ 3,647 Appraisal Selling cost 8% 8% December 31, 2015 Non-PCI impaired loans $ 27,522 Discounted cash flow Discount rate 0% — 87% 30% $ 42,940 Market comparables Discount rate (1) 0% — 100% 17% OREO $ 4,929 Appraisal Selling cost 8% 8% (1) Discount rate is adjusted for factors such as liquidation cost of collateral and selling cost. 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 June 30, 2016 and December 31, 2015 : ($ in thousands) June 30, 2016 Carrying Amount Level 1 Level 2 Level 3 Estimated Fair Value Financial assets: Cash and cash equivalents $ 1,592,796 $ 1,592,796 $ — $ — $ 1,592,796 Short-term investments $ 229,979 $ — $ 229,979 $ — $ 229,979 Resale agreements (1) $ 1,850,000 $ — $ 1,850,427 $ — $ 1,850,427 Held-to-maturity investment security $ 159,208 $ — $ — $ 158,279 $ 158,279 Loans held for sale $ 51,290 $ — $ 51,290 $ — $ 51,290 Loans receivable, net $ 23,969,599 $ — $ — $ 23,928,765 $ 23,928,765 Investment in FHLB stock $ 18,158 $ — $ 18,158 $ — $ 18,158 Investment in Federal Reserve Bank stock $ 55,216 $ — $ 55,216 $ — $ 55,216 Accrued interest receivable $ 86,503 $ — $ 86,503 $ — $ 86,503 Financial liabilities: Customer deposit accounts: Demand, savings and money market deposits $ 22,484,884 $ — $ 22,484,884 $ — $ 22,484,884 Time deposits $ 5,732,359 $ — $ 5,736,110 $ — $ 5,736,110 Short-term borrowings $ 29,499 $ — $ 29,499 $ — $ 29,499 FHLB advances $ 320,526 $ — $ 332,595 $ — $ 332,595 Repurchase agreements (1) $ 200,000 $ — $ 268,353 $ — $ 268,353 Accrued interest payable $ 8,053 $ — $ 8,053 $ — $ 8,053 Long-term debt $ 196,204 $ — $ 196,826 $ — $ 196,826 (1) Resale and repurchase agreements are reported net pursuant to ASC 210-20-45, Balance Sheet Offsetting . As of June 30, 2016 , $250.0 million out of $450.0 million of repurchase agreements was eligible for netting against resale agreements. December 31, 2015 ($ in thousands) Carrying Level 1 Level 2 Level 3 Estimated Financial assets: Cash and cash equivalents $ 1,360,887 $ 1,360,887 $ — $ — $ 1,360,887 Short-term investments $ 299,916 $ — $ 299,916 $ — $ 299,916 Resale agreements (1) $ 1,600,000 $ — $ 1,533,961 $ — $ 1,533,961 Loans held for sale $ 31,958 $ — $ 31,958 $ — $ 31,958 Loans receivable, net $ 23,378,789 $ — $ — $ 23,000,817 $ 23,000,817 Investment in FHLB stock $ 28,770 $ — $ 28,770 $ — $ 28,770 Investment in Federal Reserve Bank stock $ 54,932 $ — $ 54,932 $ — $ 54,932 Accrued interest receivable $ 89,243 $ — $ 89,243 $ — $ 89,243 Financial liabilities: Customer deposit accounts: Demand, savings and money market deposits $ 20,859,086 $ — $ 20,859,086 $ — $ 20,859,086 Time deposits $ 6,616,895 $ — $ 6,606,942 $ — $ 6,606,942 FHLB advances $ 1,019,424 $ — $ 1,032,000 $ — $ 1,032,000 Accrued interest payable $ 8,848 $ — $ 8,848 $ — $ 8,848 Long-term debt $ 206,084 $ — $ 186,593 $ — $ 186,593 (1) Resale and repurchase agreements are reported net pursuant to ASC 210-20-45, Balance Sheet Offsetting . As of December 31, 2015, the carrying amount of $450.0 million of repurchase agreements was eligible for netting against resale agreements, resulting in no repurchase agreements’ balances reported. The following is a description of the valuation methodologies and significant assumptions used to measure financial assets and liabilities at fair value and to estimate fair value for certain financial instruments not recorded at fair value. The description also includes the level of the fair value hierarchy in which the assets or liabilities are classified. Cash and Cash Equivalents — The carrying amount approximates fair value due to the short-term nature of these instruments. As such, 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. In addition, due to the observable nature of the inputs used in deriving the estimated fair value, these instruments are classified as Level 2. Resale Agreements — The fair value of resale agreements is estimated by discounting the cash flows based on expected maturities or repricing dates utilizing estimated market discount rates. In addition, due to the observable nature of the inputs used in deriving the estimated fair value, these instruments are classified as Level 2. Held-to-Maturity Investment Security — The fair value of a held-to-maturity investment security is determined by the discount cash flow approach. The discount rate is derived from conditional prepayment rate, constant default rate, loss severity and discount margin. Due to the significant unobservable inputs, the held-to-maturity investment security is classified as Level 3. 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 the average 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 LOCOM. These loans are mainly comprised of 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 comparable 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. All appraisals include an “as is” market value without conditions as of the effective date of the appraisal. Updated appraisals and evaluations are generally obtained within the last 12 months . 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 the liquidation cost of collateral and selling cost. On a quarterly basis, all nonperforming assets are reviewed to assess whether the current carrying value is supported by the collateral or cash flow and to ensure that the current carrying value is appropriate. 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 that reflect the 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 value, 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. Please 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. On a monthly basis, the current fair market value of each OREO property is reviewed to ensure that the current carrying value is appropriate. The Company uses the market comparable 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 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. Interest Rate Swaps and Options — The Company enters into interest rate swap and option contracts with institutional counterparties to hedge against interest rate swap and option 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 option 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 swaps is determined using the market standard methodology of netting the discounted future fixed cash payments (or receipts) and the discounted expected variable cash receipts (or payments). The variable cash receipts (or payments) are based on the expectation of future interest rates (forward curves) derived from observed market interest rate curves. The fair value of interest rate options is determined using the market standard methodology of discounting the future expected cash receipts that would occur if variable interest rates fell below (rise above) the strike rate of the floors (caps). The variable interest rates used in the calculation of projected receipts on the floor (cap) are based on an expectation of future interest rates derived from observable market interest rate curves and volatilities. In addition, to comply with the provisions of ASC 820, the Company incorporates credit valuation adjustments to appropriately reflect both its own nonperformance risk and the respective counterparty’s nonperformance risk in the fair value measurements of its derivatives. The credit valuation adjustments associated with the Company’s derivatives utilize Level 3 inputs, model-derived credit spreads. As of June 30, 2016 , the Company has assessed the significance of the impact of the credit valuation adjustments on the overall valuation of these interest rate contracts’ positions and has determined that the credit valuation adjustments are not significant to the overall valuation of its derivative portfolios. As a result, the Company classifies these derivative valuations in Level 2 of the fair value hierarchy due to the observable nature of the significant inputs utilized. 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 because the contracts with the customer and the institutional party mirror each other. The fair value is determined at each reporting period based on changes in the foreign exchange rate. These are over the counter contracts where quoted market prices are not readily available. Valuation is measured using conventional valuation methodologies with observable market data. Valuation depends on the type of derivative and the nature of the underlying rate and contractual terms including period of maturity, price and index upon which the derivative’s value is based. Key inputs include foreign exchange rates (spot and/or forward rates), volatility of currencies, and the correlation of such inputs. The counterparties’ credit risks are considered nominal and resulted in no adjustments to the valuation of the foreign exchange contracts. Due to the observable nature of the inputs used in deriving the fair value of these contracts, the valuation of foreign contracts is classified as Level 2. Customer Deposits — The fair value of deposits with no stated maturity, such as demand deposits, interest checking, savings, and money market deposits, approximates the carrying amount as the amounts are payable on demand at the measurement 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 current market rates for instruments with similar maturities. Due to the observable nature of the inputs used in deriving the estimated fair value, time deposits are classified as Level 2. 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 value, these instruments are classified as Level 2. Repurchase Agreements — The fair value of the repurchase agreements is 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 value, 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. Foreign currency forward contracts — The Company enters into foreign currency forward contracts to hedge its net investment in East West Bank (China) Limited, a non-U.S. Dollar (“USD”) functional currency subsidiary in China. The fair value of foreign currency forward contracts is valued by comparing the contracted foreign exchange rate to the current market exchange rate. Inputs include spot rates, forward rates, and the interest rate curve of the domestic and foreign currency. Interest rate forward curves are used to determine which forward rate pertains to a specific maturity. Due to the observable nature of the inputs used in deriving the estimated fair value, these instruments are classified as Level 2. RPAs — The Company enters into RPAs, under which the Company assumes its pro-rata share of the credit exposure associated with the borrower’s performance related to interest rate derivative contracts. The fair value of RPAs is calculated by determining the total expected liability exposure of the derivatives to the borrowers and applying the borrowers’ credit spread to that exposure. Total expected exposure incorporates both the current and potential future exposure of the derivatives, derived from using observable inputs, such as yield curves and volatilities. The credit spreads of the borrowers used in the calculation are estimated by the Company based on current market conditions, including consideration of current borrowing spreads for similar customers and transactions, review of existing collateralization or other credit enhancements, and changes in credit sector and entity-specific credit information. The Company has determined that the majority of the inputs used to value RPAs fall within Level 2 of the fair value hierarchy. 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.

SECURITIES PURCHASED UNDER RESA

SECURITIES PURCHASED UNDER RESALE AGREEMENTS AND SOLD UNDER REPURCHASE AGREEMENTS	6 Months Ended
	Jun. 30, 2016
RESALE AND REPURCHASE AGREEMENTS
SECURITIES PURCHASED UNDER RESALE AGREEMENTS AND SOLD UNDER REPURCHASE AGREEMENTS	NOTE 4 — SECURITIES PURCHASED UNDER RESALE AGREEMENTS AND SOLD UNDER REPURCHASE AGREEMENTS Resale Agreements Resale agreements are recorded at the balances 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 $2.10 billion and $2.05 billion , respectively, as of June 30, 2016 and December 31, 2015 . The weighted average interest rates were 1.73% and 1.61% , respectively, as of June 30, 2016 and December 31, 2015 . Repurchase Agreements Long-term repurchase agreements are accounted for as collateralized financing transactions and recorded at the balances at which the securities were sold. The collateral for these agreements are primarily comprised of U.S. government agency and U.S. government sponsored enterprise mortgage-backed and debt securities. The Company may have to provide additional collateral for the repurchase agreements, as necessary. Gross repurchase agreements were $450.0 million as of both June 30, 2016 and December 31, 2015 , respectively. The weighted average interest rates were 2.90% and 2.60% , respectively, as of June 30, 2016 and December 31, 2015 . Balance Sheet Offsetting The Company’s resale and repurchase agreements are transacted under legally enforceable master repurchase agreements that provide the Company, in the event of default by the counterparty, the right to liquidate securities held and to offset receivables and payables with the same counterparty. The Company nets resale and repurchase transactions with the same counterparty on the Consolidated Balance Sheets when it has a legally enforceable master netting agreement and the transactions are eligible for netting under ASC 210-20-45. Collateral accepted includes securities that are not recognized on the Consolidated Balance Sheets. Collateral pledged consists of securities that are not netted on the Consolidated Balance Sheets against the related collateralized liability. Collateral accepted or pledged in resale and repurchase agreements with other financial institutions may also be sold or re-pledged by the secured party, but is usually delivered to and held by the third party trustees. The collateral amounts received/posted are limited for presentation purposes to the related recognized asset/liability balance for each counterparty, and accordingly, do not include excess collateral received/pledged. The following tables present resale and repurchase agreements included on the Consolidated Balance Sheets as of June 30, 2016 and December 31, 2015 : ($ in thousands) As of June 30, 2016 Gross Amounts Gross Amounts Net Amounts of Gross Amounts Not Offset on the Assets Financial Collateral Net Amount Resale agreements $ 2,100,000 $ (250,000 ) $ 1,850,000 $ — $ (1,849,189 ) (1) $ 811 Gross Amounts Gross Amounts Net Amounts of on the Gross Amounts Not Offset on the Liabilities Financial Collateral Net Amount Repurchase agreements $ 450,000 $ (250,000 ) $ 200,000 $ — $ (200,000 ) (2) $ — ($ in thousands) As of December 31, 2015 Gross Amounts Gross Amounts Net Amounts of Gross Amounts Not Offset on the Assets Financial Collateral Net Amount Resale agreements $ 2,050,000 $ (450,000 ) $ 1,600,000 $ — $ (1,593,503 ) (1) $ 6,497 Gross Amounts Gross Amounts Net Amounts of on the Gross Amounts Not Offset on the Liabilities Financial Collateral Net Amount Repurchase agreements $ 450,000 $ (450,000 ) $ — $ — $ — (2) $ — (1) 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. (2) 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. In addition to the amounts included in the table above, the Company also has balance sheet netting related to derivatives, refer to Note 6 — Derivatives to the Consolidated Financial Statements for additional information.

INVESTMENT SECURITIES

INVESTMENT SECURITIES	6 Months Ended
	Jun. 30, 2016
Investments, Debt and Equity Securities [Abstract]
INVESTMENT SECURITIES	NOTE 5 — INVESTMENT SECURITIES The following table presents the amortized cost, gross unrealized gains and losses and fair value by major categories of available-for-sale investment securities, which are carried at fair value, and a held-to-maturity investment security, which is carried at amortized cost: ($ in thousands) Amortized Gross Gross Fair As of June 30, 2016 Available-for-sale investment securities: U.S. Treasury securities $ 485,137 $ 3,423 $ — $ 488,560 U.S. government agency and U.S. government sponsored enterprise debt securities 701,085 3,035 (191 ) 703,929 U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities: Commercial mortgage-backed securities 305,724 3,443 (803 ) 308,364 Residential mortgage-backed securities 1,050,583 10,041 (1,723 ) 1,058,901 Municipal securities 149,711 4,246 (54 ) 153,903 Non-agency residential mortgage-backed securities: Investment grade (1) 54,728 1,276 (29 ) 55,975 Corporate debt securities: Investment grade (1) 418,104 475 (1,715 ) 416,864 Non-investment grade (1) 10,191 — (1,783 ) 8,408 Other securities 44,785 706 (63 ) 45,428 Total available-for-sale investment securities 3,220,048 26,645 (6,361 ) 3,240,332 Held-to-maturity investment security: Non-agency commercial mortgage-backed security 159,208 — (929 ) 158,279 Total investment securities $ 3,379,256 $ 26,645 $ (7,290 ) $ 3,398,611 As of December 31, 2015 Available-for-sale investment securities: U.S. Treasury securities $ 1,002,874 $ 33 $ (4,392 ) $ 998,515 U.S. government agency and U.S. government sponsored enterprise debt securities 771,288 555 (2,994 ) 768,849 U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities: Commercial mortgage-backed securities 354,418 268 (3,024 ) 351,662 Residential mortgage-backed securities 996,255 7,542 (6,401 ) 997,396 Municipal securities 173,785 2,657 (793 ) 175,649 Non-agency residential mortgage-backed securities: Investment grade (1) 62,133 433 (173 ) 62,393 Corporate debt securities: Investment grade (1) 366,921 132 (2,340 ) 364,713 Non-investment grade (1) 11,491 — (1,849 ) 9,642 Other securities 44,664 124 (381 ) 44,407 Total available-for-sale investment securities $ 3,783,829 $ 11,744 $ (22,347 ) $ 3,773,226 (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. Classifications are based on the lower of the credit ratings by S&P or Moody’s. Unrealized Losses The following table presents 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: ($ in thousands) Less Than 12 Months 12 Months or More Total Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses As of June 30, 2016 Available-for-sale investment securities: U.S. Treasury securities $ — $ — $ — $ — $ — $ — U.S. government agency and U.S. government sponsored enterprise debt securities 85,210 (191 ) — — 85,210 (191 ) U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities: Commercial mortgage-backed securities 50,477 (476 ) 24,377 (327 ) 74,854 (803 ) Residential mortgage-backed securities 295,399 (1,097 ) 26,327 (626 ) 321,726 (1,723 ) Municipal securities 4,398 (50 ) 2,896 (4 ) 7,294 (54 ) Non-agency residential mortgage-backed securities: Investment grade 7,470 (29 ) — — 7,470 (29 ) Corporate debt securities: Investment grade 149,452 (533 ) 91,236 (1,182 ) 240,688 (1,715 ) Non-investment grade — — 8,408 (1,783 ) 8,408 (1,783 ) Other securities 4,500 (1 ) 8,938 (62 ) 13,438 (63 ) Total available-for-sale investment securities $ 596,906 $ (2,377 ) $ 162,182 $ (3,984 ) $ 759,088 $ (6,361 ) Held-to-maturity investment security: Non-agency commercial mortgage-backed security 158,279 $ (929 ) — — 158,279 (929 ) Total investment securities $ 755,185 $ (3,306 ) $ 162,182 $ (3,984 ) $ 917,367 $ (7,290 ) As of December 31, 2015 Available-for-sale investment securities: U.S. Treasury securities $ 907,400 $ (4,250 ) $ 20,282 $ (142 ) $ 927,682 $ (4,392 ) U.S. government agency and U.S. government sponsored enterprise debt securities 541,385 (2,994 ) — — 541,385 (2,994 ) U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities: Commercial mortgage-backed securities 252,340 (2,562 ) 20,793 (462 ) 273,133 (3,024 ) Residential mortgage-backed securities 535,842 (4,530 ) 58,315 (1,871 ) 594,157 (6,401 ) Municipal securities 48,495 (437 ) 14,739 (356 ) 63,234 (793 ) Non-agency residential mortgage-backed securities: Investment grade 5,123 (1 ) 6,242 (172 ) 11,365 (173 ) Corporate debt securities: Investment grade 218,944 (1,189 ) 89,989 (1,151 ) 308,933 (2,340 ) Non-investment grade — — 9,642 (1,849 ) 9,642 (1,849 ) Other securities 17,990 (112 ) 8,731 (269 ) 26,721 (381 ) Total available-for-sale investment securities $ 2,527,519 $ (16,075 ) $ 228,733 $ (6,272 ) $ 2,756,252 $ (22,347 ) For each reporting period, the Company examines all individual securities that are in an unrealized loss position for OTTI. For discussion of the factors and criteria the Company uses in analyzing securities for OTTI, please see Note 1 — Summary of Significant Accounting Policies t o the Consolidated Financial Statements of the Company’s 2015 Form 10-K. The unrealized losses were primarily attributed to the widened liquidity spread and credit spread in addition to yield curve movement. 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. The Company believes the gross unrealized losses detailed in the previous tables are temporary and are not due to reasons of credit quality. As a result, the Company expects to recover the entire amortized cost basis of these securities. Accordingly, no impairment loss has been recorded in the Company’s Consolidated Statements of Income for the three and six months ended June 30, 2016 and 2015 . During the first quarter of 2016 , the Company obtained a non-agency mortgage-backed investment security, through a securitization of multifamily real estate loans, which was classified as held-to-maturity and is measured at amortized cost. The Company has the intent and ability to hold the security to maturity. For detailed discussion, please refer to Note 7 — Loans Receivable And Allowance For Credit Losses to the Consolidated Financial Statements. OTTI The following table presents a rollforward of the amounts related to the OTTI credit losses recognized in earnings for the three and six months ended June 30, 2016 and 2015 : ($ in thousands) Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Beginning balance $ — $ 106,688 $ — $ 112,338 Addition of OTTI previously not recognized — — — — Additional increase 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 $ — $ 106,688 No OTTI credit losses were recognized for the three and six months ended June 30, 2016 and 2015 . There were no sales of any investment securities with previously recognized OTTI credit losses for the three months ended June 30, 2016 and 2015 . For the six months ended June 30, 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 $5.7 million . There were no sale transactions of any investment securities with previously recognized OTTI credit losses for the six months ended June 30, 2016 . Realized Gains and Losses The following table presents the proceeds, gross realized gains and losses related to the sales of available-for-sale investment securities for the three and six months ended June 30, 2016 and 2015: ($ in thousands) Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Proceeds from sales $ 211,990 $ 292,561 $ 864,743 $ 473,062 Gross realized gains $ 2,836 $ 5,554 $ 6,803 $ 9,958 Gross realized losses $ — $ — $ 125 $ — Related tax expense $ 1,192 $ 2,333 $ 2,808 $ 4,182 There were no sales of held-to-maturity investment securities for the three and six months ended June 30, 2016 and 2015 . Scheduled Maturities of Investment Securities The following table presents the scheduled maturities of available-for-sale investment securities as of June 30, 2016 : ($ in thousands) Amortized Cost Estimated Fair Value Due within one year $ 854,642 $ 854,787 Due after one year through five years 625,607 633,105 Due after five years through ten years 350,091 352,152 Due after ten years 1,389,708 1,400,288 Total available-for-sale investment securities $ 3,220,048 $ 3,240,332 The following table presents the scheduled maturity of the held-to-maturity investment security as of June 30, 2016 : ($ in thousands) Amortized Cost Estimated Fair Value Due after ten years $ 159,208 $ 158,279 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 fair values of $1.06 billion and $873.0 million as of June 30, 2016 and December 31, 2015 , respectively, were pledged to secure public deposits, repurchase agreements, the Federal Reserve Bank’s discount window, and for other purposes required or permitted by law.

DERIVATIVES

DERIVATIVES	6 Months Ended
	Jun. 30, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
DERIVATIVES	NOTE 6 — DERIVATIVES The Company uses derivatives to manage exposure to market risk, including interest rate risk and foreign currency risk and to assist customers with their risk management objectives. The Company’s goal is to manage interest rate sensitivity and volatility so that movements in interest rates are not significant to earnings or capital. The Company also uses foreign exchange contracts to manage the foreign exchange risk associated with certain foreign currency-denominated assets and liabilities, as well as the Company’s investment in East West Bank (China) Limited, a non-USD functional currency subsidiary in China. The Company recognizes all derivatives on the Consolidated Balance Sheets at fair value. While the Company designates certain derivatives as hedging instruments in a qualifying hedge accounting relationship, other derivatives consist of economic hedges. For additional information on the Company’s derivatives and hedging activities, please see Note 1 — Summary of Significant Accounting Policies to the Consolidated Financial Statements of the Company’s 2015 Form 10-K. The following table presents the total notional and fair values of the Company’s derivatives as of June 30, 2016 and December 31, 2015 : ($ in thousands) June 30, 2016 December 31, 2015 Notional Amount Fair Value Notional Amount Fair Value Derivative Assets (1) Derivative Liabilities (1) Derivative Assets (1) Derivative Liabilities (1) Derivatives designated as hedging instruments: Interest rate swaps on certificates of deposit $ 48,365 $ — $ 810 $ 112,913 $ — $ 5,213 Foreign currency forward contracts 85,451 1,732 — 86,590 2,365 — Total derivatives designated as hedging instruments $ 133,816 $ 1,732 $ 810 $ 199,503 $ 2,365 $ 5,213 Derivatives not designated as hedging instruments: Interest rate swaps and options $ 7,069,886 $ 157,035 $ 159,776 $ 6,494,900 $ 67,215 $ 67,325 Foreign exchange contracts 782,104 10,078 8,634 652,993 10,254 9,350 RPAs 47,354 — 12 43,033 — 4 Total derivatives not designated as hedging instruments $ 7,899,344 $ 167,113 $ 168,422 $ 7,190,926 $ 77,469 $ 76,679 (1) Derivative assets are included in Other assets on the Consolidated Balance Sheets. Derivative liabilities are included in Accrued expenses and other liabilities and Interest-bearing deposits on the Consolidated Balance Sheets. Derivatives Designated as Hedging Instruments Interest Rate Swaps on Certificates of Deposit — The Company is exposed to changes in the fair value of certain fixed rate certificates of deposit due to changes in the benchmark interest rate, London Interbank Offering Rate. 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 total notional amounts of the interest rate swaps on certificates of deposit were $48.4 million and $112.9 million , as of June 30, 2016 and December 31, 2015 , respectively. The fair value liabilities of the interest rate swaps were $810 thousand and $5.2 million as of June 30, 2016 and December 31, 2015 , respectively. This decrease was primarily due to $24.3 million and $63.7 million notional amounts of interest rate swaps on certificates of deposit that were called during the three and six months ended June 30, 2016 , respectively. The following table presents the net gains (losses) recognized on the Consolidated Statements of Income related to derivatives designated as fair value hedges for the three and six months ended June 30, 2016 and 2015 : ($ in thousands) Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Gains (losses) recorded in interest expense: Recognized on interest rate swaps $ 142 $ (2,291 ) $ 4,371 $ 757 Recognized on certificates of deposit (7 ) 2,294 (3,362 ) (401 ) Net amount recognized on fair value hedges (ineffective portion) $ 135 $ 3 $ 1,009 $ 356 Net Investment Hedges — Consistent with ASC 830-20, Foreign Currency Matters — Foreign Currency Transactions , ASC 815 allows hedging of the foreign currency risk of a net investment in a foreign operation. During the fourth quarter of 2015, the Company entered into foreign currency forward contracts to hedge its investment in East West Bank (China) Limited, a non-USD functional currency subsidiary in China. The hedging instruments designated as net investment hedges, involve hedging the risk of changes in the USD equivalent value of a designated monetary amount of the Company’s net investment in China, against the risk of adverse changes in the foreign currency exchange rate. The Company expects that the hedging instrument will be highly effective in offsetting the changes in the value of the hedged net investment attributable to the hedged risk. The Company recorded the changes in the carrying amount of its China subsidiary in the Foreign Currency Translation Adjustment account within AOCI. Simultaneously, the effective portion of the hedge of this exposure was also recorded in the Foreign Currency Translation Adjustment account and the ineffective portion, if any, was recorded in current earnings. As of June 30, 2016 , the notional amounts and fair values of the foreign currency forward contracts were $85.5 million and a $1.7 million asset, respectively. The following table presents the losses recorded in the Foreign currency translation account within AOCI related to the effective portion of the net investment hedges and ineffectiveness recorded on the Consolidated Statements of Income for the three and six months ended June 30, 2016 and 2015 : ($ in thousands) Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Gains recognized in AOCI on net investment hedges (effective portion) $ 1,712 $ — $ 227 $ — Gains (losses) recognized in Foreign exchange income (ineffective portion) $ 449 $ — $ (431 ) $ — Derivatives Not Designated as Hedging Instruments Interest Rate Swaps and Options — The Company enters into interest rate derivatives including interest rate swaps and options 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 mirrored interest rate contracts with institutional counterparties. As of June 30, 2016 , the total notional amounts of interest rate swaps and options, including mirrored transactions with institutional counterparties and the Company’s customers totaled $3.53 billion for derivatives that were in an asset valuation position and $3.53 billion for derivatives that were in a liability valuation position. As of December 31, 2015 , the total notional amounts of interest rate swaps and options, including mirrored transactions with institutional counterparties and the Company’s customers totaled $3.25 billion for derivatives that were in an asset valuation position and $3.25 billion for derivatives that were in a liability valuation position. The fair values of interest rate swap and option contracts, including with institutional counterparties and the Company’s customers amounted to a $157.0 million asset and a $159.8 million liability as of June 30, 2016 . The fair values of interest rate swap and option contracts, including with institutional counterparties and the Company’s customers amounted to a $67.2 million asset and a $67.3 million liability as of December 31, 2015 . Foreign Exchange Contracts — The Company enters into foreign exchange contracts on a regular basis to economically hedge against foreign exchange rate fluctuations. A majority of these contracts have original maturities of one year or less. As of June 30, 2016 and December 31, 2015 , the notional amounts of short-term foreign exchange contracts were $782.1 million and $653.0 million , respectively. The fair values of the short-term foreign exchange contracts recorded were a $10.1 million asset and an $8.6 million liability as of June 30, 2016 . The fair values of short-term foreign exchange contracts recorded were a $10.3 million asset and a $9.4 million liability as of December 31, 2015 . RPAs — The Company has entered into RPAs under which the Company assumed its pro-rata share of the credit exposure associated with the borrower’s performance related to interest rate derivative contracts. The Company may or may not be a party to the interest rate derivative contract and enters into such RPAs in instances where the Company is a party to the related loan participation agreement with the borrower. The Company will make/receive payments under the RPAs if the borrower defaults on its obligation to perform under the interest rate derivative contract. The Company manages its credit risk on the RPAs by monitoring the credit worthiness of the borrowers, which is based on the normal credit review process. The notional amount of the RPAs reflects the Company’s pro-rata share of the derivative instrument. As of June 30, 2016 , the notional amount and the fair values of RPAs purchased were approximately $ 33.4 million and a $ 12 thousand liability, respectively. As of June 30, 2016 , the notional amount of the RPAs sold was approximately $ 14.0 million and the fair value of the derivative asset was insignificant. As of December 31, 2015 , the notional amount and the fair values of RPAs purchased were approximately $33.7 million and a $4 thousand liability, respectively. As of December 31, 2015 , the notional amount of the RPA sold was approximately $9.3 million and the fair value of the derivative asset was insignificant. Assuming all underlying borrowers referenced in the interest rate derivative contracts defaulted as of June 30, 2016 and December 31, 2015 , the exposures from the RPAs purchased would be $610 thousand and $257 thousand , respectively. As of June 30, 2016 and December 31, 2015 , the weighted average remaining maturities of the outstanding RPAs were 2.6 years and 3.2 years , respectively. Foreign Exchange Options — During 2010, the Company entered into foreign exchange option contracts with major brokerage firms to economically hedge against foreign exchange fluctuations in certain certificates of deposit available to its customers. These certificates of deposit had a term of five years and paid interest based on the performance of the Chinese Renminbi relative to the USD. These instruments expired in the second quarter of 2015 . The following table presents the net gains (losses) recognized on the Company’s Consolidated Statements of Income related to derivatives not designated as hedging instruments for the three and six months ended June 30, 2016 and 2015 : ($ in thousands) Location in Consolidated Statements of Income Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Derivatives not designated as hedging instruments: Interest rate swaps and options Other fees and operating income $ (1,920 ) $ 1,215 $ (2,634 ) $ 621 Foreign exchange contracts Foreign exchange income 3,069 908 8,277 2,216 RPA Other fees and operating income — — (8 ) — Foreign exchange options Foreign exchange income — 37 — 236 Embedded derivative liabilities Other operating expense — 5 — (136 ) Total net income $ 1,149 $ 2,165 $ 5,635 $ 2,937 Credit-Risk-Related Contingent Features — Certain over-the-counter 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 event that the credit rating of East West Bank falls below investment grade. In the event that East West Bank’s credit rating is downgraded to below investment grade, minimal additional collateral would be required to be posted as of June 30, 2016 . No additional collateral would be required to be posted as of as of December 31, 2015 , since the liabilities related to such contracts were already fully collateralized. 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 on the Consolidated Balance Sheets and the respective collateral 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 June 30, 2016 Gross Amounts Gross Amounts Net Amounts of Gross Amounts Not Offset on the Assets Financial Collateral Net Amount Derivatives $ 7,698 $ — $ 7,698 $ (7,024 ) (1) $ (553 ) (2) $ 121 Gross Amounts Gross Amounts Net Amounts of Gross Amounts Not Offset on the Liabilities Financial Collateral Net Amount Derivatives $ 166,395 $ — $ 166,395 $ (7,024 ) (1) $ (159,015 ) (3) $ 356 ($ in thousands) As of December 31, 2015 Gross Amounts Gross Amounts Net Amounts of Gross Amounts Not Offset on the Assets Financial Collateral Net Amount Derivatives $ 8,733 $ — $ 8,733 $ (5,293 ) (1) $ (3,068 ) (2) $ 372 Gross Amounts Gross Amounts Net Amounts of Gross Amounts Not Offset on the Liabilities Financial Collateral Net Amount Derivatives $ 78,779 $ — $ 78,779 $ (5,293 ) (1) $ (73,109 ) (3) $ 377 (1) Represents the netting of derivative receivable and payable balances for the same counterparty under enforceable master netting arrangements if the Company has elected to net. (2) Represents $553 thousand and $3.1 million of cash collateral received against derivative assets with the same counterparty that are subject to enforceable master netting arrangements as of June 30, 2016 and December 31, 2015 , respectively. (3) Represents cash and securities pledged against derivative liabilities with the same counterparty that are subject to enforceable master netting arrangements. Includes approximately $52.0 million and $21.1 million of cash collateral posted as of June 30, 2016 and December 31, 2015 , respectively. In addition to the amounts included in the table above, the Company also has balance sheet netting related to resale and repurchase agreements, please refer to Note 4 — Securities Purchased Under Resale Agreements And Sold Under Repurchase Agreements to the Consolidated Financial Statements. Please refer to Note 3 — Fair Value Measurement And Fair Value Of Financial Instruments to the Consolidated Financial Statements for fair value measurement disclosures on derivatives.

LOANS RECEIVABLE AND ALLOWANCE

LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES	6 Months Ended
	Jun. 30, 2016
Loans and Leases Receivable Disclosure [Abstract]
LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES	NOTE 7 — LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES The Company’s held-for-investment loan portfolio includes originated and purchased loans. Originated and purchased loans with no evidence of credit deterioration at their acquisition date are referred to collectively as non-PCI loans. Purchased credit impaired (“PCI”) loans are loans acquired with evidence of credit deterioration since their origination and it is probable at the acquisition date that the Company would be unable to collect all contractually required payments. PCI loans are accounted for under ASC Subtopic 310-30, Loans and Debt Securities Acquired with Deteriorated Credit Quality . The Company has elected to account for PCI loans on a pool level basis in accordance with ASC 310-30 at the time of acquisition. The following table presents the composition of the Company’s non-PCI and PCI loans as of June 30, 2016 and December 31, 2015 : ($ in thousands) June 30, 2016 December 31, 2015 Non-PCI Loans PCI Loans (1) Total (1) Non-PCI Loans PCI Loans (1) Total (1) CRE: Income producing $ 7,364,321 $ 448,412 $ 7,812,733 $ 6,937,199 $ 541,275 $ 7,478,474 Construction 522,967 — 522,967 436,776 1,895 438,671 Land 138,342 2,640 140,982 187,409 6,195 193,604 Total CRE 8,025,630 451,052 8,476,682 7,561,384 549,365 8,110,749 C&I: Commercial business 8,402,526 46,610 8,449,136 8,155,991 57,906 8,213,897 Trade finance 714,656 12 714,668 787,800 1,310 789,110 Total C&I 9,117,182 46,622 9,163,804 8,943,791 59,216 9,003,007 Residential: Single-family 3,027,217 158,814 3,186,031 2,877,286 189,633 3,066,919 Multifamily 1,230,358 115,911 1,346,269 1,374,718 148,277 1,522,995 Total residential 4,257,575 274,725 4,532,300 4,252,004 337,910 4,589,914 Consumer 2,041,786 21,644 2,063,430 1,931,828 24,263 1,956,091 Total loans $ 23,442,173 $ 794,043 $ 24,236,216 $ 22,689,007 $ 970,754 $ 23,659,761 Unearned fees, premiums, and discounts, net 151 — 151 (16,013 ) — (16,013 ) Allowance for loan losses (266,511 ) (257 ) (266,768 ) (264,600 ) (359 ) (264,959 ) Loans, net $ 23,175,813 $ 793,786 $ 23,969,599 $ 22,408,394 $ 970,395 $ 23,378,789 (1) Loans net of ASC 310-30 discount. The Company’s CRE segment provides financing for income producing properties, construction properties and land. Commercial business and trade finance in the C&I segment provide financing to small and middle market businesses in a wide spectrum of industries. This includes loans for working capital, accounts receivable and inventory lines of credit, Small Business Administration loans, lease financing and financing to international trade companies with trade financial services and products, including letters of credit, revolving lines of credit, import loans, bankers’ acceptances, working capital lines of credit, domestic purchase financing and pre-export financing. The Company’s adjustable rate mortgage (“ARM”) single-family residential loans are comprised primarily of first mortgage loans secured by one -to- four unit residential properties. The Company’s ARM single-family residential loan programs generally have a one -year, three -year or five -year initial fixed period. The Company’s multifamily residential loans are comprised primarily of variable rate loans that have a six -month or three -year initial fixed period. As of June 30, 2016 and December 31, 2015 , consumer loans were comprised primarily of home equity lines of credit. 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 June 30, 2016 and December 31, 2015 , loans totaling $16.05 billion and $15.91 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 an 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 single-family residential loans, payment performance/delinquency is the driving indicator for the risk ratings. Risk ratings are the overall credit quality indicator for the Company and the credit quality indicator utilized for estimating the appropriate allowance for loan losses. The Company utilizes a risk rating system, which can be classified within 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 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 based on changes in the borrowers’ financial status and collectability. The following tables present the credit risk rating for non-PCI loans by portfolio segment as of June 30, 2016 and December 31, 2015 : ($ in thousands) Pass/Watch Special Mention Substandard Doubtful Total Non-PCI Loans June 30, 2016 CRE: Income producing $ 7,086,172 $ 51,802 $ 226,347 $ — $ 7,364,321 Construction 519,345 3,622 — — 522,967 Land 124,379 — 13,953 10 138,342 C&I: Commercial business 7,998,058 139,189 234,391 30,888 8,402,526 Trade finance 688,080 1,600 21,271 3,705 714,656 Residential: Single-family 3,002,316 7,035 17,866 — 3,027,217 Multifamily 1,177,818 — 52,540 — 1,230,358 Consumer 2,032,848 3,728 5,210 — 2,041,786 Total $ 22,629,016 $ 206,976 $ 571,578 $ 34,603 $ 23,442,173 ($ in thousands) Pass/Watch Special Mention Substandard Doubtful Total Non-PCI Loans December 31, 2015 CRE: Income producing $ 6,672,951 $ 59,309 $ 204,939 $ — $ 6,937,199 Construction 435,112 1,194 470 — 436,776 Land 172,189 — 15,220 — 187,409 C&I: Commercial business 7,794,735 201,280 135,449 24,527 8,155,991 Trade finance 750,144 13,812 23,844 — 787,800 Residential: Single-family 2,841,722 8,134 27,430 — 2,877,286 Multifamily 1,317,550 2,918 54,250 — 1,374,718 Consumer 1,926,418 883 4,527 — 1,931,828 Total $ 21,910,821 $ 287,530 $ 466,129 $ 24,527 $ 22,689,007 The following tables present the credit risk rating for PCI loans by portfolio segment as of June 30, 2016 and December 31, 2015 : ($ in thousands) Pass/Watch Special Mention Substandard Total PCI Loans June 30, 2016 CRE: Income producing $ 363,469 $ 10,866 $ 74,077 $ 448,412 Construction — — — — Land 2,248 — 392 2,640 C&I: Commercial business 37,284 4,648 4,678 46,610 Trade finance 12 — — 12 Residential: Single-family 155,941 1,227 1,646 158,814 Multifamily 99,886 — 16,025 115,911 Consumer 20,266 452 926 21,644 Total (1) $ 679,106 $ 17,193 $ 97,744 $ 794,043 ($ in thousands) Pass/Watch Special Mention Substandard Total PCI Loans December 31, 2015 CRE: Income producing $ 440,100 $ 4,987 $ 96,188 $ 541,275 Construction — — 1,895 1,895 Land 4,285 — 1,910 6,195 C&I: Commercial business 52,212 819 4,875 57,906 Trade finance 1,310 — — 1,310 Residential: Single-family 184,092 1,293 4,248 189,633 Multifamily 130,770 — 17,507 148,277 Consumer 23,121 452 690 24,263 Total (1) $ 835,890 $ 7,551 $ 127,313 $ 970,754 (1) Loans net of ASC 310-30 discount. Nonaccrual and Past Due Loans Non-PCI loans that are 90 or more days past due are generally placed on nonaccrual status. Additionally, non-PCI loans that are not 90 or more days past due but have identified deficiencies are also placed on nonaccrual status. The following tables present the aging analysis on non-PCI loans as of June 30, 2016 and December 31, 2015 : ($ in thousands) Accruing Loans 30-59 Days Past Due Accruing Loans 60-89 Days Past Due Total Accruing Past Due Loans Nonaccrual Loans Less Than 90 Days Past Due Nonaccrual Loans 90 or More Days Past Due Total Nonaccrual Loans Current Accruing Loans Total Non-PCI Loans June 30, 2016 CRE: Income producing $ 3,557 $ 2,992 $ 6,549 $ 17,860 $ 41,390 $ 59,250 $ 7,298,522 $ 7,364,321 Construction — — — — — — 522,967 522,967 Land 3,340 630 3,970 5,779 10 5,789 128,583 138,342 C&I: Commercial business 4,455 426 4,881 54,516 19,411 73,927 8,323,718 8,402,526 Trade finance — — — 4,734 3,705 8,439 706,217 714,656 Residential: Single-family 5,038 3,264 8,302 2,378 2,739 5,117 3,013,798 3,027,217 Multifamily 4,328 337 4,665 6,474 10,845 17,319 1,208,374 1,230,358 Consumer 5,189 2,261 7,450 131 1,608 1,739 2,032,597 2,041,786 Total $ 25,907 $ 9,910 $ 35,817 $ 91,872 $ 79,708 $ 171,580 $ 23,234,776 $ 23,442,173 ($ in thousands) Accruing Loans 30-59 Days Past Due Accruing Loans 60-89 Days Past Due Total Accruing Past Due Loans Nonaccrual Loans Less Than 90 Days Past Due Nonaccrual Loans 90 or More Days Past Due Total Nonaccrual Loans Current Accruing Loans Total Non-PCI Loans December 31, 2015 CRE: Income producing $ 3,465 $ 25,256 $ 28,721 $ 11,359 $ 17,870 $ 29,229 $ 6,879,249 $ 6,937,199 Construction — — — 14 — 14 436,762 436,776 Land 1,124 — 1,124 277 406 683 185,602 187,409 C&I: Commercial business 1,992 1,185 3,177 50,726 14,009 64,735 8,088,079 8,155,991 Trade finance — — — — — — 787,800 787,800 Residential: Single-family 7,657 2,927 10,584 92 8,634 8,726 2,857,976 2,877,286 Multifamily 6,320 981 7,301 6,486 9,758 16,244 1,351,173 1,374,718 Consumer 2,078 209 2,287 233 1,505 1,738 1,927,803 1,931,828 Total $ 22,636 $ 30,558 $ 53,194 $ 69,187 $ 52,182 $ 121,369 $ 22,514,444 $ 22,689,007 For information on the policy for recording payments received and resuming accrual of interest on non-PCI loans that are placed on nonaccrual status, please see Note 1 — Summary of Significant Accounting Policies to the Consolidated Financial Statements of the Company’s 2015 Form 10-K. PCI loans are excluded from the above aging analysis tables as the Company has elected to account for these loans on a pool level basis in accordance with ASC 310-30 at the time of acquisition. Please refer to the discussion on PCI loans within this note for additional details on interest income recognition. As of June 30, 2016 and December 31, 2015 , PCI loans on nonaccrual status totaled $31.4 million and $37.7 million , respectively. Loans in Process of Foreclosure As of June 30, 2016 and December 31, 2015 , the Company had $14.2 million and $18.0 million , respectively, of recorded investment in consumer mortgage loans secured by residential real estate properties, for which formal foreclosure proceedings were in process according to local requirements of the applicable jurisdictions, which were not included in OREO. No foreclosed residential real estate properties were included in total net OREO of $4.9 million as of June 30, 2016 . In comparison, foreclosed residential real estate properties with a carrying amount of $912 thousand were included in total net OREO of $7.0 million as of December 31, 2015 . Troubled Debt Restructurings (“TDRs”) Potential TDRs are individually evaluated and the type of restructuring is selected based on the loan type and the circumstances of the borrower’s financial difficulty in order to maximize the Company’s recovery. A TDR is a modification of the terms of a loan when the Company, for economic or legal reasons related to the borrower’s financial difficulties, grants a concession to the borrower, it would not otherwise consider. The following tables present the additions to non-PCI TDRs for the three and six months ended June 30, 2016 and 2015 : Loans Modified as TDRs During the Three Months Ended June 30, ($ in thousands) 2016 2015 Number Pre-Modification Post-Modification (1) Financial (2) Number Pre-Modification Post-Modification (1) Financial (2) CRE: Income producing 2 $ 2,152 $ 2,150 $ 43 — $ — $ — $ — Land 1 $ 5,522 $ 5,279 $ — 1 $ 171 $ 100 $ 102 C&I: Commercial business 1 $ 75 $ 75 $ 12 12 $ 37,924 $ 38,117 $ 5,465 Residential: Single-family 1 $ 795 $ 795 $ — — $ — $ — $ — Loans Modified as TDRs During the Six Months Ended June 30, ($ in thousands) 2016 2015 Number Pre-Modification Post-Modification (1) Financial (2) Number Pre-Modification Post-Modification (1) Financial (2) CRE: Income producing 3 $ 15,899 $ 15,802 $ 43 1 $ 828 $ 818 $ — Land 1 $ 5,522 $ 5,279 $ — 1 $ 171 $ 100 $ 102 C&I: Commercial business 5 $ 21,689 $ 15,842 $ 2,618 13 $ 38,090 $ 38,280 $ 5,497 Trade finance 2 $ 7,901 $ 9,256 $ — — $ — $ — $ — Residential: Single-family 2 $ 1,071 $ 1,064 $ — 1 $ 281 $ 281 $ 2 Consumer: 1 $ 344 $ 338 $ 1 — $ — $ — $ — (1) Includes subsequent payments after modification and reflects the balance as of June 30, 2016 and 2015 . (2) The financial impact includes charge-offs and specific reserves recorded at the modification date. The following tables present the non-PCI TDR modifications for the three and six months ended June 30, 2016 and 2015 by modification type: ($ in thousands) Modification Type 2016 2015 Principal (1) Interest Rate Reduction Other Total Principal (1) Principal and Interest (2) Interest Deferments Other Total Three Months Ended June 30, CRE $ 6,275 $ — $ 1,154 $ 7,429 $ — $ — $ — $ 100 $ 100 C&I 75 — — 75 13,488 18,629 6,000 — 38,117 Residential — 795 — 795 — — — — — Total $ 6,350 $ 795 $ 1,154 $ 8,299 $ 13,488 $ 18,629 $ 6,000 $ 100 $ 38,217 ($ in thousands) Modification Type 2016 2015 Principal (1) Interest Rate Reduction Other Total Principal (1) Principal and Interest (2) Interest Deferments Other Total Six Months Ended June 30, CRE $ 19,927 $ — $ 1,154 $ 21,081 $ — $ 818 $ — $ 100 $ 918 C&I 18,589 1,986 4,523 25,098 13,651 18,629 6,000 — 38,280 Residential 269 795 — 1,064 281 — — — 281 Consumer 338 — — 338 — — — — — Total $ 39,123 $ 2,781 $ 5,677 $ 47,581 $ 13,932 $ 19,447 $ 6,000 $ 100 $ 39,479 (1) Principal modification includes forbearance payments, term extensions and principal deferments that modify the terms of the loan from principal and interest payments to interest payments only. (2) Principal and interest modification includes principal and interest deferments or reductions. 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 June 30, 2016 and 2015 for non-PCI loans that were modified as TDRs within the previous 12 months. The following table presents information for loans modified as TDRs within the previous 12 months that have subsequently defaulted during the six months ended June 30, 2016 and 2015 , and are still in default at period end: Loans Modified as TDRs that Subsequently Defaulted During the Six Months Ended June 30, 2016 2015 ($ in thousands) Number of Recorded Number of Recorded C&I: Commercial business 3 $ 568 — $ — The amount of additional funds committed to lend to borrowers whose terms have been modified was $4.3 million as of June 30, 2016 . The amount of additional funds committed to lend to borrowers whose terms have been modified was immaterial as of December 31, 2015 . Impaired Loans The Company’s loans are grouped into heterogeneous and homogeneous (mostly consumer loans) categories. Classified loans in the heterogeneous category are identified and evaluated for impairment on an individual basis. A loan is considered impaired when, based on current information and events, it is probable that the Company will not be able to collect all scheduled payments of principal or interest due in accordance with the original contractual terms. Impaired loans are measured based on the present value of expected future cash flows discounted at the loan’s effective interest rate or, as expedient, at the loan’s observable market price or the fair value of the collateral, if the loan is collateral dependent, less costs to sell. When the value of an impaired loan is less than the recorded investment and the loan is classified as nonperforming and uncollectible, the deficiency is charged-off against the allowance for loan losses. Impaired loans exclude the homogeneous consumer loan portfolio, which is evaluated collectively for impairment. The Company’s impaired loans include predominantly non-PCI loans held-for-investment on nonaccrual status and any non-PCI loans modified in a TDR, which may be on accrual or nonaccrual status. The following tables present information on impaired non-PCI loans as of June 30, 2016 and December 31, 2015 : ($ in thousands) Unpaid Principal Balance Recorded Investment With No Allowance Recorded Investment With Allowance Total Recorded Investment Related Allowance June 30, 2016 CRE: Income producing $ 86,401 $ 59,990 $ 17,763 $ 77,753 $ 464 Land 6,910 5,279 1,114 6,393 74 C&I: Commercial business 115,023 32,444 65,559 98,003 21,260 Trade finance 13,158 9,256 3,775 13,031 22 Residential: Single-family 14,154 2,378 10,294 12,672 378 Multifamily 26,606 18,375 6,313 24,688 271 Consumer 1,577 — 1,577 1,577 45 Total $ 263,829 $ 127,722 $ 106,395 $ 234,117 $ 22,514 ($ in thousands) Unpaid Principal Balance Recorded Investment With No Allowance Recorded Investment With Allowance Total Recorded Investment Related Allowance December 31, 2015 CRE: Income producing $ 47,043 $ 24,347 $ 15,720 $ 40,067 $ 3,148 Construction 66 — 14 14 1 Land 1,537 632 683 1,315 118 C&I: Commercial business 81,720 31,045 40,111 71,156 15,993 Trade finance 10,675 — 10,675 10,675 95 Residential: Single-family 16,486 4,401 10,611 15,012 584 Multifamily 25,634 16,944 6,783 23,727 339 Consumer 1,240 — 1,240 1,240 60 Total $ 184,401 $ 77,369 $ 85,837 $ 163,206 $ 20,338 The following table presents the average recorded investment and interest income recognized on non-PCI impaired loans during the three and six months ended June 30, 2016 and 2015 : ($ in thousands) Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Average Recognized (1) Average Recognized (1) Average Recorded Investment Recognized Interest Income (1) Average Recognized Interest Income (1) CRE: Income producing $ 78,623 $ 404 $ 46,042 $ 134 $ 79,549 $ 816 $ 46,897 $ 268 Construction — — 14 — — — 14 — Land 6,690 8 5,876 10 6,859 17 5,951 20 C&I: Commercial business 100,124 270 73,306 761 100,308 530 71,644 1,550 Trade finance 12,716 67 11,623 51 13,514 133 11,739 134 Residential: Single-family 12,713 74 15,595 68 12,797 148 15,658 137 Multifamily 24,836 77 23,690 190 25,045 154 23,757 379 Consumer 1,582 16 1,256 12 1,586 31 1,258 23 Total impaired non-PCI loans $ 237,284 $ 916 $ 177,402 $ 1,226 $ 239,658 $ 1,829 $ 176,918 $ 2,511 (1) Includes interest recognized on accruing non-PCI TDRs. Interest payments received on nonaccrual non-PCI loans are reflected as a reduction to principal and not as interest income. Allowance for Credit Losses The following tables present a summary of activities in the allowance for loan losses by portfolio segment for the three and six months ended June 30, 2016 and 2015 : ($ in thousands) Non-PCI Loans PCI Loans Total CRE C&I Residential Consumer Total Three Months Ended June 30, 2016 Beginning balance $ 82,538 $ 134,077 $ 33,935 $ 9,360 $ 259,910 $ 328 $ 260,238 (Reversal of) provision for loan losses (4,439 ) 15,347 (2,671 ) (1,017 ) 7,220 (71 ) 7,149 Charge-offs (139 ) (2,214 ) — (3 ) (2,356 ) — (2,356 ) Recoveries 142 1,217 297 81 1,737 — 1,737 Net recoveries (charge-offs) 3 (997 ) 297 78 (619 ) — (619 ) Ending balance $ 78,102 $ 148,427 $ 31,561 $ 8,421 $ 266,511 $ 257 $ 266,768 ($ in thousands) Non-PCI Loans PCI Loans Total CRE C&I Residential Consumer Total Three Months Ended June 30, 2015 Beginning balance $ 69,740 $ 133,914 $ 42,990 $ 10,451 $ 257,095 $ 643 $ 257,738 Provision for (reversal of) loan losses 5,739 (2,716 ) (3,318 ) (289 ) (584 ) (31 ) (615 ) Charge-offs (348 ) (2,843 ) (1 ) — (3,192 ) — (3,192 ) Recoveries 365 5,607 997 329 7,298 — 7,298 Net recoveries 17 2,764 996 329 4,106 — 4,106 Ending balance $ 75,496 $ 133,962 $ 40,668 $ 10,491 $ 260,617 $ 612 $ 261,229 ($ in thousands) Non-PCI Loans PCI Loans CRE C&I Residential Consumer Total Total Six Months Ended June 30, 2016 Beginning balance $ 81,191 $ 134,597 $ 39,292 $ 9,520 $ 264,600 $ 359 $ 264,959 (Reversal of) provision for loan losses (3,133 ) 20,001 (7,988 ) (1,243 ) 7,637 (102 ) 7,535 Charge-offs (195 ) (8,074 ) (137 ) (4 ) (8,410 ) — (8,410 ) Recoveries 239 1,903 394 148 2,684 — 2,684 Net recoveries (charge-offs) 44 (6,171 ) 257 144 (5,726 ) — (5,726 ) Ending balance $ 78,102 $ 148,427 $ 31,561 $ 8,421 $ 266,511 $ 257 $ 266,768 ($ in thousands) Non-PCI Loans PCI Loans Total CRE C&I Residential Consumer Total Six Months Ended June 30, 2015 Beginning balance $ 72,263 $ 134,598 $ 43,856 $ 10,248 $ 260,965 $ 714 $ 261,679 Provision for (reversal of) loan losses 3,406 2,662 (4,889 ) 375 1,554 (102 ) 1,452 Charge-offs (1,350 ) (9,432 ) (747 ) (463 ) (11,992 ) — (11,992 ) Recoveries 1,177 6,134 2,448 331 10,090 — 10,090 Net (charge-offs) recoveries (173 ) (3,298 ) 1,701 (132 ) (1,902 ) — (1,902 ) Ending balance $ 75,496 $ 133,962 $ 40,668 $ 10,491 $ 260,617 $ 612 $ 261,229 For further information on accounting policies and the methodology used to estimate the allowance for credit losses and loan charge-offs, please see Note 1 — Summary of Significant Accounting Policies to the Consolidated Financial Statements of the Company’s 2015 Form 10-K. The following table presents a summary of activities in the allowance for unfunded credit reserves during the three and six months ended June 30, 2016 and 2015 : ($ in thousands) Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Beginning balance $ 21,414 $ 15,632 $ 20,360 $ 12,712 (Reversal of) provision for unfunded lending commitments (1,096 ) 4,109 (42 ) 7,029 Ending balance $ 20,318 $ 19,741 $ 20,318 $ 19,741 The allowance for unfunded credit reserves is maintained at a level believed by management to be sufficient to absorb estimated probable losses related to unfunded credit facilities. The allowance for unfunded credit reserves is included in Accrued expense and other liabilities on the Consolidated Balance Sheets. Please refer to Note 10 — Commitments And Contingencies to the Consolidated Financial Statements for additional information related to unfunded credit reserves. The following tables present the Company’s allowance for loan losses and recorded investments by portfolio segment and impairment methodology as of June 30, 2016 and December 31, 2015 : ($ in thousands) CRE C&I Residential Consumer Total As of June 30, 2016 Allowance for loan losses Individually evaluated for impairment $ 538 $ 21,282 $ 649 $ 45 $ 22,514 Collectively evaluated for impairment 77,564 127,145 30,912 8,376 243,997 Acquired with deteriorated credit quality 243 8 6 — 257 Ending balance $ 78,345 $ 148,435 $ 31,567 $ 8,421 $ 266,768 Recorded investment in loans Individually evaluated for impairment $ 84,146 $ 111,034 $ 37,360 $ 1,577 $ 234,117 Collectively evaluated for impairment 7,941,484 9,006,148 4,220,215 2,040,209 23,208,056 Acquired with deteriorated credit quality (1) 451,052 46,622 274,725 21,644 794,043 Ending balance (1) $ 8,476,682 $ 9,163,804 $ 4,532,300 $ 2,063,430 $ 24,236,216 ($ in thousands) CRE C&I Residential Consumer Total As of December 31, 2015 Allowance for loan losses Individually evaluated for impairment $ 3,267 $ 16,088 $ 923 $ 60 $ 20,338 Collectively evaluated for impairment 77,924 118,509 38,369 9,460 244,262 Acquired with deteriorated credit quality 347 9 3 — 359 Ending balance $ 81,538 $ 134,606 $ 39,295 $ 9,520 $ 264,959 Recorded investment in loans Individually evaluated for impairment $ 41,396 $ 81,831 $ 38,739 $ 1,240 $ 163,206 Collectively evaluated for impairment 7,519,988 8,861,960 4,213,265 1,930,588 22,525,801 Acquired with deteriorated credit quality (1) 549,365 59,216 337,910 24,263 970,754 Ending balance (1) $ 8,110,749 $ 9,003,007 $ 4,589,914 $ 1,956,091 $ 23,659,761 (1) Loans net of ASC 310-30 discount. PCI Loans At the date of acquisition, PCI loans are pooled and accounted for at fair value, which represents the discounted value of the expected cash flows of the loan portfolio. The amount of expected cash flows over the initial investment in the loan represents the “accretable yield,” which is recognized as interest income on a level yield basis over the life of the loan. The excess of total contractual cash flows over the cash flows expected to be received at origination is deemed as the “nonaccretable difference.” The following table presents the changes in accretable yield for PCI loans for the three and six months ended June 30, 2016 and 2015 : ($ in thousands) Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Beginning balance $ 185,991 $ 293,155 $ 214,907 $ 311,688 Accretion (16,254 ) (23,359 ) (38,683 ) (53,928 ) Changes in expected cash flows (2,960 ) 2,066 (9,447 ) 14,102 Ending balance $ 166,777 $ 271,862 $ 166,777 $ 271,862 Loans Held for Sale Loans held for sale are carried at the LOCOM. When a determination is made at the time of commitment to originate or purchase loans as held-for-investment, it is the Company’s intent to hold these loans to maturity or for the “foreseeable future,” subject to periodic review under the Company’s management evaluation processes, including asset/liability management. When the Company subsequently changes its intent to hold certain loans, the loans are transferred from the loans held-for-investment portfolio to the loans held for sale portfolio at LOCOM. Loans held for sale amounted to $51.3 million as of June 30, 2016 , and comprised mainly of multifamily residential and consumer loans. In comparison, as of December 31, 2015 loans held for sale amounted to $32.0 million and comprised of consumer loans. Transfers of loans held-for-investment to loans held for sale were $267.1 million and $575.8 million , respectively, for the three and six months ended June 30, 2016 . These loans transfers were comprised of multifamily residential, C&I and CRE loans. In comparison, loans held-for-investment transferred to loans held for sale of $335.7 million and $1.16 billion , respectively, for the three and six months ended June 30, 2015 , were comprised primarily of single-family residential loans and C&I loans. The Company recorded $37 thousand and $1.9 million in write-downs to the allowance for loan losses related to loans transferred from loans held-for-investment to loans held for sale for the three and six months ended June 30, 2016 , respectively. In comparison, the Company recorded $441 thousand and $2.1 million in write-downs to the allowance for loan losses related to loans transferred from loans held-for-investment to loans held for sale for the three and six months ended June 30, 2015 , respectively. During the three months ended June 30, 2016 and 2015 , the Company sold $166.0 million and $232.3 million , respectively, in originated loans resulting in net gains of $2.8 million and $5.8 million , respectively. During the six months ended June 30, 2016 the Company sold or securitized approximately $422.2 million in originated loans resulting in net gains of $7.1 million . During the six months ended June 30, 2016 , the Company recorded $1.1 million in net gains and $641 thousand in mortgage servicing rights, and retained $160.1 million of the senior tranche of the resulting securities from the securitization of $201.7 million of multifamily residential loans. Originated loans sold or securitized during the six months ended June 30, 2016 were primarily comprised of multifamily residential, CRE and C&I loans. In comparison, during the six months ended June 30, 2015 , the Company sold $559.1 million in originated loans, which were primarily comprised of single-family residential and C&I loans, resulting in net gains of $14.3 million . From time to time, the Company purchases loans (including participation loans) and sells loans in the secondary market. The Company sold approximately $79.7 million and $133.6 million of loans in the secondary market, respectively, resulting in gains on sales of loans of $69 thousand for both the three and six months ended June 30, 2016 . In comparison, the Company sold approximately $103.1 million and $446.1 million of loans in the secondary market at net gains of $30 thousand and $1.0 million for the three and six months ended June 30, 2015 , respectively. No LOCOM adjustments related to the loans held for sale portfolio were recorded for three months ended June 30, 2016 , compared to the $517 thousand recorded for the three months ended June 30, 2015 . For the six months ended June 30, 2016 and 2015 , the Company recorded $2.4 million and $517 thousand , respectively, in LOCOM adjustments related to the loans held for sale portfolio. LOCOM adjustments are recorded in Net gains on sales of loans on the Consolidated Statements of Income.

INVESTMENTS IN QUALIFIED AFFORD

INVESTMENTS IN QUALIFIED AFFORDABLE HOUSING PARTNERSHIPS, TAX CREDIT AND OTHER INVESTMENTS, NET	6 Months Ended
	Jun. 30, 2016
INVESTMENTS IN QUALIFIED AFFORDABLE HOUSING PARTNERSHIPS, TAX CREDIT AND OTHER INVESTMENTS, NET
INVESTMENTS IN QUALIFIED AFFORDABLE HOUSING PARTNERSHIPS, TAX CREDIT AND OTHER INVESTMENTS, NET	NOTE 8 — INVESTMENTS IN QUALIFIED AFFORDABLE HOUSING PARTNERSHIPS, TAX CREDIT AND OTHER INVESTMENTS, NET 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 income. 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 and 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 Partnerships, Net The Company records its investments in qualified affordable housing partnerships, net using the proportional amortization method. 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 on the Consolidated Statements of Income as a component of income tax expense. The following table presents the balances of the Company’s investments in qualified affordable housing partnerships, net and related unfunded commitments as of the periods indicated: ($ in thousands) June 30, 2016 December 31, 2015 Investments in qualified affordable housing partnerships, net $ 179,657 $ 193,978 Accrued expenses and other liabilities — Unfunded commitments $ 45,995 $ 61,525 The following table presents additional information related to the Company’s investments in qualified affordable housing partnerships, net for the periods indicated: ($ in thousands) Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Tax credits and other tax benefits recognized $ 8,518 $ 8,605 $ 17,970 $ 17,380 Amortization expense included in income tax expense $ 7,345 $ 6,152 $ 14,311 $ 12,396 Investments in Tax Credit and Other Investments, Net Investments in tax credit and other investments, net were $177.9 million and $187.2 million as of June 30, 2016 and December 31, 2015 , 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 the limited partnership, the Company applies either the equity method or cost method of accounting. Total unfunded commitments for these investments were $102.9 million and $113.2 million as of June 30, 2016 and December 31, 2015 , respectively, and were included in Accrued expenses and other liabilities on the Consolidated Balance Sheets. Amortization of tax credit and other investments were $14.0 million and $3.0 million for the three months ended June 30, 2016 and 2015 , respectively. Amortization of tax credits and other investments were $28.2 million and $9.3 million for the six months ended June 30, 2016 and 2015 , respectively.

GOODWILL AND OTHER INTANGIBLE A

GOODWILL AND OTHER INTANGIBLE ASSETS	6 Months Ended
	Jun. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
GOODWILL AND OTHER INTANGIBLE ASSETS	NOTE 9 — GOODWILL AND OTHER INTANGIBLE ASSETS Goodwill Total goodwill of $469.4 million remained unchanged as of June 30, 2016 compared to December 31, 2015 . Goodwill is tested for impairment on an annual basis as of December 31 st , or more frequently as events occur or circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying amount. The Company’s three operating segments, Retail Banking, Commercial Banking, and Other, are equivalent to the Company’s reporting units. For complete discussion and disclosure, please refer to Note 14 — Business Segments to the Consolidated Financial Statements. Impairment analysis The Company performed its annual impairment analysis as of December 31, 2015 and concluded that there was no goodwill impairment as the fair values of all reporting units exceeded the carrying amounts of goodwill. There were no triggering events during the six months ended June 30, 2016 and therefore, no additional goodwill impairment analysis was performed. No assurance can be given that goodwill will not be written down in future periods. Please refer to Note 10 - Goodwill and Other Intangible Assets to the Consolidated Financial Statements of the Company’s 2015 Form 10-K for additional details related to the Company’s annual goodwill impairment analysis. Premiums on Acquired Deposits Premiums on acquired deposits represent the intangible value of depositor relationships resulting from deposit liabilities assumed in various acquisitions. These intangibles are tested for impairment on an annual basis, or more frequently as events occur, or as current circumstances and conditions warrant. There were no impairment write-downs on deposit premiums for the six months ended June 30, 2016 and 2015 . The following table presents the gross carrying value of intangible assets and accumulated amortization as of June 30, 2016 and December 31, 2015 : ($ in thousands) June 30, 2016 December 31, 2015 Gross balance $ 108,814 $ 108,814 Accumulated amortization 76,893 72,739 Net carrying balance $ 31,921 $ 36,075 Amortization Expense The Company amortizes premiums on acquired deposits based on the projected useful lives of the related deposits. The amortization expense related to the intangible assets was $2.1 million and $2.3 million for the three months ended June 30, 2016 and 2015 , respectively, and $4.2 million and $4.7 million for the six months ended June 30, 2016 and 2015 , respectively. The following table presents the estimated future amortization expense of premiums on acquired deposits: Year Ended December 31, Amount ($ in thousands) Remainder of 2016 $ 3,932 2017 6,935 2018 5,883 2019 4,864 2020 3,846 Thereafter 6,461 Total $ 31,921

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	6 Months Ended
	Jun. 30, 2016
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	NOTE 10 — 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 unissued commercial letters of credit and standby letters of credit (“ SBLCs”). For further information about these commitments, including their terms, see Note 14 — Commitments, Contingencies and Related Party Transactions Policies t o the Consolidated Financial Statements of the Company’s 2015 Form 10-K. The following table presents the Company’s credit-related commitments as of the periods indicated: ($ in thousands) June 30, 2016 December 31, 2015 Loan commitments $ 4,758,116 $ 3,370,271 Commercial letters of credit and SBLCs $ 1,447,447 $ 1,293,547 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 and may require maintenance of compensatory balances. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future funding requirements. Commercial letters of credit are issued to facilitate domestic and foreign trade transactions while SBLCs generally are contingent upon the failure of the customers to perform according to the terms of the underlying contract with the third party. As a result, the total contractual amounts do not necessarily represent future funding requirements. The Company’s historical experience is that SBLCs typically expire without being funded. Additionally, in many cases, the Company holds collateral in various forms against these SBLCs. As a part of its risk management activities, the Company monitors the creditworthiness of customers in conjunction with its SBLC exposure. Customers are obligated to reimburse the Company for any payment made on the customers’ behalf. If customers fail to pay, the Company would, as applicable, liquidate the collateral and/or offset accounts. Total letters of credit of $1.45 billion consisted of commercial letters of credit of $43.7 million and SBLCs of $1.40 billion as of June 30, 2016 . The Company uses the same credit underwriting criteria in extending loans, commitments, and conditional obligations to customers. Each customer’s creditworthiness is evaluated on a case-by-case basis. Collateral may be obtained based on management’s assessment of the customer’s credit. Collateral may include accounts receivable, inventory, property, plant and equipment, and income-producing commercial property. Estimated exposure to loss from these commitments is included in the allowance for unfunded credit reserves and amounted to $19.8 million as of both June 30, 2016 and December 31, 2015 . These amounts are included in Accrued expenses and other liabilities on the Consolidated Balance Sheets. Guarantees — The Company has sold or securitized loans with recourse in the ordinary course of business. The recourse component in the loans sold or securitized with recourse is considered a guarantee. As the guarantor, the Company is obligated to make payments when the loans default. As of June 30, 2016 and December 31, 2015 , the unpaid principal balance of total loans sold or securitized with recourse amounted to $168.6 million and $191.3 million , respectively. The maximum potential future payments of loans subject to full recourse, which generally represents the unpaid principal balance of total loans sold or securitized with recourse, were $26.4 million and $29.8 million as of June 30, 2016 and December 31, 2015 , respectively. The maximum potential future payments of loans subject to limited recourse were $5.2 million and $5.9 million as of June 30, 2016 and December 31, 2015 , respectively. 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 these guarantees is included in the allowance for unfunded credit reserves and totaled $499 thousand and $630 thousand as of June 30, 2016 and December 31, 2015 , respectively. The allowance for unfunded credit reserves is included in Accrued expenses and other liabilities on the Consolidated Balance Sheets. The Company continues to experience minimal losses from the single-family and multifamily residential loan portfolios sold or securitized with recourse. Litigation — The Company is a party to various legal actions arising in the normal course of business. In accordance with ASC 450, Contingencies , the Company accrues reserves for currently outstanding lawsuits, claims, and proceedings when a loss contingency is probable and can be reasonably estimated. The outcome of such legal actions is inherently difficult to predict and it is possible that one or more of the currently pending, threatened legal or regulatory matters 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 pending legal matters 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. The case is being appealed. The litigation accrual was $37.2 million and $35.4 million as of June 30, 2016 and December 31, 2015 , respectively. Other Commitments — The Company has commitments to invest in qualified affordable housing partnerships and other tax credit investments qualifying for historic rehabilitation tax credits or other types of tax credits. These commitments are payable on demand. As of June 30, 2016 and December 31, 2015 , these commitments were $148.9 million and $174.7 million , respectively. These commitments are included in Accrued expenses and other liabilities on the Consolidated Balance Sheets.

STOCK COMPENSATION PLANS

STOCK COMPENSATION PLANS	6 Months Ended
	Jun. 30, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
STOCK COMPENSATION PLANS	NOTE 11 — STOCK COMPENSATION PLANS Pursuant to the Company’s 2016 Stock Incentive Plan, as amended, the Company may issue stock options, restricted stock awards (“RSAs”) and restricted stock units (“RSUs”) to employees. The Company did not issue any stock options or RSAs during the six months ended June 30, 2016 and 2015 . All RSAs have vested during 2015 . RSUs are granted under the Company’s long-term incentive plan at no cost to the recipient. RSUs vest ratably over three years or cliff vest after three or five years of continued employment from the date of the grant. RSUs entitle the recipient to receive cash dividends equivalent to any dividends paid on the underlying common stock. The RSU dividends are accrued during the vesting period and are paid at the time of vesting. While a portion of the RSUs are time-vesting awards, others vest subject to the attainment of specified performance goals. All RSUs are subject to forfeiture until vested. The following table presents the total stock compensation expense and the related net tax benefit associated with the Company’s various employee share-based compensation plans for the three and six months ended June 30, 2016 and 2015 : ($ in thousands) Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Stock compensation costs $ 4,635 $ 3,698 $ 9,210 $ 7,652 Net tax benefit recognized in equity for stock compensation plans $ 19 $ 51 $ 1,005 $ 3,196 The following table presents a summary of the activity for the Company’s time-based and performance-based RSUs for the six months ended June 30, 2016 based on the target amount of awards: Six Months Ended June 30, 2016 Time-Based RSUs Performance-Based RSUs Shares Weighted Average Grant-Date Fair Value Shares Weighted Average Grant-Date Fair Value Outstanding at beginning of period 933,312 $ 36.83 389,358 $ 34.21 Granted 486,607 31.37 159,407 29.18 Vested (114,824 ) 25.12 (138,019 ) 25.25 Forfeited (56,581 ) 35.95 — — Outstanding at end of period 1,248,514 $ 35.82 410,746 $ 35.27 Compensation cost for the time-based awards is based on the quoted market price of the Company’s stock at the grant date. Performance-based awards granted that include discretionary performance-based vesting conditions are subject to variable accounting. As of June 30, 2016 , total unrecognized compensation cost related to time-based and performance-based RSUs amounted to $31.0 million and $11.4 million , respectively. This cost is expected to be recognized over a weighted average period of 2.01 years and 1.86 years, respectively.

STOCKHOLDERS' EQUITY AND EARNIN

STOCKHOLDERS' EQUITY AND EARNINGS PER SHARE	6 Months Ended
	Jun. 30, 2016
STOCKHOLDERS' EQUITY AND EARNINGS PER SHARE
STOCKHOLDERS' EQUITY AND EARNINGS PER SHARE	NOTE 12 — STOCKHOLDERS’ EQUITY AND EARNINGS PER SHARE Warrant — The Company acquired MetroCorp Bancshares, Inc., (“MetroCorp”) on January 17, 2014. Prior to the acquisition, MetroCorp had an outstanding warrant to purchase 771,429 shares of its common stock. Upon the acquisition, the rights of the warrant holder were converted into the right to acquire 230,282 shares of East West’s common stock until January 16, 2019. The warrant has no t been exercised as of June 30, 2016 . EPS — Basic EPS is computed by dividing net income available to common stockholders by the weighted average number of common shares outstanding during each period. Diluted EPS is computed by dividing net income available to common stockholders by the weighted average number of common shares outstanding during each period, plus common share equivalents calculated for stock options, warrants and RSUs outstanding using the treasury stock method. The Company has issued RSAs, which are unvested share-based payment awards that contain non-forfeitable rights to dividends or dividend equivalents. These RSAs are considered participating securities. Accordingly, the Company applied the two-class method in the computation of basic and diluted EPS in periods where RSAs are outstanding. RSUs do not contain nonforfeitable rights to dividends when granted. As of June 30, 2016 , there were no RSAs outstanding. The following table presents EPS calculations for the three and six months ended June 30, 2016 and 2015 : Three Months Ended June 30, Six Months Ended June 30, ($ in thousands, except per share data, shares in thousands) 2016 2015 2016 2015 Basic Net income $ 103,284 $ 98,748 $ 210,800 $ 198,775 Less: Earnings allocated to participating securities — — — 3 Net income allocated to common stockholders $ 103,284 $ 98,748 $ 210,800 $ 198,772 Basic weighted average number of shares outstanding 144,101 143,846 144,029 143,751 Basic EPS $ 0.72 $ 0.69 $ 1.46 $ 1.38 Diluted Net income allocated to diluted common stockholders $ 103,284 $ 98,748 $ 210,800 $ 198,772 Basic weighted average number of shares outstanding 144,101 143,846 144,029 143,751 Diluted potential common shares (1) 977 634 944 657 Diluted weighted average number of shares outstanding 145,078 144,480 144,973 144,408 Diluted EPS $ 0.71 $ 0.68 $ 1.45 $ 1.38 (1) Includes dilutive shares from RSUs and warrants for the three and six months ended June 30, 2016 and 2015. Also includes dilutive shares from stock options for the three and six months ended June 30, 2015 . For the three months ended June 30, 2016 and 2015 , approximately 3 thousand weighted average anti-dilutive shares of RSUs were excluded from the diluted EPS computation for both periods. For the six months ended June 30, 2016 and 2015 , approximately 10 thousand and 3 thousand weighted average anti-dilutive shares from RSUs, respectively, were excluded from the diluted EPS computation.

ACCUMULATED OTHER COMPREHENSIVE

ACCUMULATED OTHER COMPREHENSIVE INCOME	6 Months Ended
	Jun. 30, 2016
Equity [Abstract]
ACCUMULATED OTHER COMPREHENSIVE INCOME	NOTE 13 — ACCUMULATED OTHER COMPREHENSIVE INCOME The following tables present the changes in the components of AOCI balances for the three and six months ended June 30, 2016 and 2015 : ($ in thousands) Three Months Ended June 30, 2016 2015 Available- for-Sale Investment Securities Foreign Currency Translation Adjustments (1) Total Available- for-Sale Investment Securities Total Beginning balance $ 6,772 $ (8,830 ) $ (2,058 ) $ 13,555 $ 13,555 Net unrealized gains (losses) arising during the period 6,628 (4,638 ) 1,990 (4,904 ) (4,904 ) Amounts reclassified from AOCI (1,644 ) — (1,644 ) (3,221 ) (3,221 ) Changes, net of taxes 4,984 (4,638 ) 346 (8,125 ) (8,125 ) Ending balance $ 11,756 $ (13,468 ) $ (1,712 ) $ 5,430 $ 5,430 ($ in thousands) Six Months Ended June 30, 2016 2015 Available- for-Sale Investment Securities Foreign Currency Translation Adjustments (1) Total Available- for-Sale Investment Securities Total Beginning balance $ (6,144 ) $ (8,797 ) $ (14,941 ) $ 4,237 $ 4,237 Net unrealized gains (losses) arising during the period 21,770 (4,671 ) 17,099 6,969 6,969 Amounts reclassified from AOCI (3,870 ) — (3,870 ) (5,776 ) (5,776 ) Changes, net of taxes 17,900 (4,671 ) 13,229 1,193 1,193 Ending balance $ 11,756 $ (13,468 ) $ (1,712 ) $ 5,430 $ 5,430 (1) Represents foreign currency translation adjustments related to the Company’s net investment in non-U.S. operations, including related hedges. In the third quarter of 2015, there was a change in functional currency from USD to the local currency of the Company’s foreign subsidiary. The following table presents the components of other comprehensive income (loss), reclassifications to net income and the related tax effects for the three and six months ended June 30, 2016 and 2015 : ($ in thousands) Three Months Ended June 30, 2016 2015 Before-Tax Tax Net-of-Tax Before-Tax Tax Net-of-Tax Available-for-sale investment securities: Net unrealized gains (losses) arising during the period $ 11,435 $ (4,807 ) $ 6,628 $ (8,455 ) $ 3,551 $ (4,904 ) Net realized gains reclassified into net income (1) (2,836 ) 1,192 (1,644 ) (5,554 ) 2,333 (3,221 ) Net change 8,599 (3,615 ) 4,984 (14,009 ) 5,884 (8,125 ) Foreign currency translation adjustments: Net unrealized losses arising during period (4,638 ) — (4,638 ) — — — Net change (4,638 ) — (4,638 ) — — — Other comprehensive income (loss) $ 3,961 $ (3,615 ) $ 346 $ (14,009 ) $ 5,884 $ (8,125 ) ($ in thousands) Six Months Ended June 30, 2016 2015 Before-Tax Tax Net-of-Tax Before-Tax Tax Net-of-Tax Available-for-sale investment securities: Net unrealized gains arising during the period $ 37,565 $ (15,795 ) $ 21,770 $ 12,014 $ (5,045 ) $ 6,969 Net realized gains reclassified into net income (1) (6,678 ) 2,808 (3,870 ) (9,958 ) 4,182 (5,776 ) Net change 30,887 (12,987 ) 17,900 2,056 (863 ) 1,193 Foreign currency translation adjustments: Net unrealized losses arising during period (4,671 ) — (4,671 ) — — — Net change (4,671 ) — (4,671 ) — — — Other comprehensive income $ 26,216 $ (12,987 ) $ 13,229 $ 2,056 $ (863 ) $ 1,193 (1) For the three and six months ended June 30, 2016 and 2015 , the pretax amount was reported in Net gains on sales of available-for-sale investment securities on the Consolidated Statements of Income.

BUSINESS SEGMENTS

BUSINESS SEGMENTS	6 Months Ended
	Jun. 30, 2016
Segment Reporting [Abstract]
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 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 Note 1 — Summary of Significant Accounting Policies to the Consolidated Financial Statements of the Company’s 2015 Form 10-K. 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 credit 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 as of and for the three and six months ended June 30, 2016 and 2015 : ($ in thousands) Three Months Ended June 30, 2016 Retail Banking Commercial Banking Other Total Interest income $ 78,635 $ 177,426 $ 22,804 $ 278,865 Charge for funds used (23,798 ) (52,681 ) (6,770 ) (83,249 ) Interest spread on funds used 54,837 124,745 16,034 195,616 Interest expense (14,672 ) (4,240 ) (6,369 ) (25,281 ) Credit on funds provided 69,778 8,472 4,999 83,249 Interest spread on funds provided 55,106 4,232 (1,370 ) 57,968 Net interest income $ 109,943 $ 128,977 $ 14,664 $ 253,584 Provision for credit losses $ 2,445 $ 3,608 $ — $ 6,053 Depreciation, amortization and (accretion), net $ (546 ) $ (9,267 ) $ 22,287 $ 12,474 Goodwill $ 357,207 $ 112,226 $ — $ 469,433 Segment pretax profit $ 36,264 $ 95,179 $ 11,473 $ 142,916 Segment assets $ 7,437,534 $ 18,196,664 $ 7,318,014 $ 32,952,212 ($ in thousands) Three Months Ended June 30, 2015 Retail Commercial Other Total Interest income $ 82,729 $ 157,337 $ 15,379 $ 255,445 Charge for funds used (21,357 ) (38,328 ) (13,723 ) (73,408 ) Interest spread on funds used 61,372 119,009 1,656 182,037 Interest expense (12,996 ) (4,710 ) (10,247 ) (27,953 ) Credit on funds provided 60,950 7,995 4,463 73,408 Interest spread on funds provided 47,954 3,285 (5,784 ) 45,455 Net interest income (loss) $ 109,326 $ 122,294 $ (4,128 ) $ 227,492 (Reversal of) provision for credit losses $ (3,454 ) $ 6,948 $ — $ 3,494 Depreciation, amortization and (accretion), net (1) $ 3,235 $ (6,054 ) $ 8,938 $ 6,119 Goodwill $ 357,207 $ 112,226 $ — $ 469,433 Segment pretax profit (loss) $ 55,349 $ 97,269 $ (8,197 ) $ 144,421 Segment assets $ 7,373,641 $ 16,141,368 $ 6,549,063 $ 30,064,072 ($ in thousands) Six Months Ended June 30, 2016 Retail Banking Commercial Banking Other Total Interest income $ 156,006 $ 354,508 $ 44,523 $ 555,037 Charge for funds used (46,450 ) (106,472 ) (18,607 ) (171,529 ) Interest spread on funds used 109,556 248,036 25,916 383,508 Interest expense (29,278 ) (8,266 ) (11,705 ) (49,249 ) Credit on funds provided 142,209 18,449 10,871 171,529 Interest spread on funds provided 112,931 10,183 (834 ) 122,280 Net interest income $ 222,487 $ 258,219 $ 25,082 $ 505,788 Provision for credit losses $ 863 $ 6,630 $ — $ 7,493 Depreciation, amortization and (accretion), net $ (503 ) $ (20,040 ) $ 45,775 $ 25,232 Goodwill $ 357,207 $ 112,226 $ — $ 469,433 Segment pretax profit $ 82,209 $ 188,008 $ 17,370 $ 287,587 Segment assets $ 7,437,534 $ 18,196,664 $ 7,318,014 $ 32,952,212 ($ in thousands) Six Months Ended June 30, 2015 Retail Commercial Other Total Interest income $ 170,175 $ 316,122 $ 32,409 $ 518,706 Charge for funds used (44,656 ) (75,678 ) (23,168 ) (143,502 ) Interest spread on funds used 125,519 240,444 9,241 375,204 Interest expense (25,219 ) (8,973 ) (21,305 ) (55,497 ) Credit on funds provided 118,618 16,010 8,874 143,502 Interest spread on funds provided 93,399 7,037 (12,431 ) 88,005 Net interest income (loss) $ 218,918 $ 247,481 $ (3,190 ) $ 463,209 (Reversal of) provision for credit losses $ (2,723 ) $ 11,204 $ — $ 8,481 Depreciation, amortization and (accretion), net (1) $ 4,917 $ (16,531 ) $ 21,860 $ 10,246 Goodwill $ 357,207 $ 112,226 $ — $ 469,433 Segment pretax profit (loss) $ 108,284 $ 190,444 $ (7,481 ) $ 291,247 Segment assets $ 7,373,641 $ 16,141,368 $ 6,549,063 $ 30,064,072 (1) Includes amortization and accretion related to the FDIC indemnification asset/net payable to the FDIC.

SUBSEQUENT EVENTS

SUBSEQUENT EVENTS	6 Months Ended
	Jun. 30, 2016
Subsequent Events [Abstract]
SUBSEQUENT EVENTS	NOTE 15 — SUBSEQUENT EVENTS On July 20, 2016 , the Company’s Board of Directors declared third quarter 2016 cash dividends of $0.20 per share for the Company’s common stock which is payable on August 15, 2016 to stockholders of record as of August 1, 2016 .

BASIS OF PRESENTATION (Policies

BASIS OF PRESENTATION (Policies)	6 Months Ended
	Jun. 30, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Consolidation	The unaudited interim Consolidated Financial Statements in this Form 10-Q include the accounts of East West and its subsidiaries, East West Bank and subsidiaries (referred to herein as “East West Bank” or the “Bank”) and East West Insurance Services, Inc. Intercompany transactions and balances have been eliminated in consolidation. As of June 30, 2016 , East West has six wholly-owned subsidiaries that are statutory business trusts (the “Trusts”). In accordance with FASB Accounting Standards Codification (“ASC”) Topic 810, the Trusts are not consolidated into the Company.
Basis of Presentation	The unaudited interim Consolidated Financial Statements presented in accordance with United States Generally Accepted Accounting Principles (“U.S. GAAP”), applicable guidelines prescribed by regulatory authorities, and general practices within the banking industry, reflect all adjustments that, in the opinion of management, are necessary for fair statement of the interim period financial statements. Certain prior year balances and notes have been reclassified to conform to current period presentation.
Current Accounting Developments	NEW ACCOUNTING PRONOUNCEMENTS ADOPTED In February 2015, the FASB issued Accounting Standards Update (“ASU”) 2015-02, Consolidation (Topic 810): Amendments to the Consolidation Analysis that changes the analysis a reporting entity must perform to determine whether it should consolidate certain types of legal entities. The amended guidance 1) modifies the evaluation of whether limited partnerships and similar legal entities are VIEs or voting interest entities; 2) eliminates the presumption that a general partner should consolidate a limited partnership; 3) affects the consolidation analysis of reporting entities that are involved with VIEs, particularly those that have fee arrangements and related party relationships; and 4) provides a scope exception from consolidation guidance for reporting entities that are required to comply with or operate in accordance with requirements that are similar to those in Rule 2a7 of the Investment Company Act of 1940 for registered money market funds. The Company adopted this amended guidance in the first quarter of 2016 and the adoption of this guidance did not have a material impact on the Company’s 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 adopted this guidance retrospectively in the first quarter of 2016. The adoption of this guidance did not have a material impact on the Company’s Consolidated Financial Statements. In April 2015, the FASB issued ASU 2015-05, Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement. ASU 2015-05 amends ASC 350-40 and requires the Company to determine whether a cloud computing arrangement contains a software license. If the arrangement contains a software license, the Company should account for the fees related to the software license element consistent with how the acquisitions of other software licenses are accounted for under ASC 350-40. If the arrangement does not contain a software license, the Company should account for the arrangement as a service contract. The Company adopted this guidance prospectively to all arrangements entered into or materially modified in the first quarter of 2016. The adoption of this guidance did not have a material impact on the Company’s Consolidated Financial Statements. 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 clarifies the principles for recognizing revenue and replaces nearly all existing revenue recognition guidance in U.S. GAAP. Quantitative and qualitative disclosures regarding the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers are also required. ASU 2014-09 as amended by ASU 2015-14, ASU 2016-08, ASU 2016-10 and ASU 2016-12, is effective for interim and annual periods beginning after December 15, 2017 and is applied on either a modified retrospective or full retrospective basis. Early adoption is permitted for interim and annual periods beginning after December 15, 2016. The Company’s preliminary analysis suggests that the adoption of this accounting guidance is not expected to have a material impact on the Company’s Consolidated Financial Statements. However, there are many aspects of the new accounting guidance that are still being interpreted and the FASB has recently issued updates to certain aspects of guidance. The results of our materiality analysis may change based on the conclusion reached as to the application of the new guidance. In January 2016, the FASB issued ASU 2016-01, Financial Instruments—Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities. ASU 2016-01 requires equity investments, except those accounted for under the equity method of accounting or consolidated, to be measured at fair value with changes recognized in net income. If there is no readily determinable fair value, the guidance allows entities the ability to measure investments at cost less impairment, whereby impairment is based on a qualitative assessment. The guidance eliminates the requirement to disclose the methods and significant assumptions used to estimate the fair value of financial instruments measured at amortized cost and changes the presentation of financial assets and financial liabilities on the Consolidated Balance Sheet or in the footnotes. If an entity has elected the fair value option to measure liabilities, the new accounting guidance requires the portion of the change in the fair value of a liability resulting from credit risk to be presented in other comprehensive income. The Company has not elected to measure any of its liabilities at fair value. ASU 2016-01 is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption is not permitted except for certain specific changes under the fair value option guidance. To adopt the amendments, the Company is required to make a cumulative-effect adjustment to the consolidated balance sheet as of the beginning of the fiscal year in which the guidance is effective. However, the amendments related to equity securities without readily determinable fair values (including disclosure requirements) should be applied prospectively to equity investments that exist as of the adoption date. The Company is currently evaluating the impact on its Consolidated Financial Statements. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842), which is intended to increase transparency and comparability in the accounting for lease transactions. ASU 2016-02 requires lessees to recognize all leases longer than twelve months on the Consolidated Balance Sheet as lease assets and lease liabilities and quantitative and qualitative disclosures regarding key information about leasing arrangements. Lessor accounting is largely unchanged. ASU 2016-02 is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years with an option to early adopt. The Company is currently evaluating the impact on its Consolidated Financial Statements. In March 2016, the FASB issued ASU 2016-05, Derivatives and Hedging (Topic 815): Effect of Derivative Contract Novations on Existing Hedge Accounting Relationships , to clarify that a change in the counterparty to a derivative instrument that has been designated as the hedging instrument in an existing hedging relationship would not be considered a termination of the derivative instrument or a change in a critical term of the hedging relationship provided that all other hedge accounting criteria in ASC 815 continue to be met. This clarification applies to both cash flow and fair value hedging relationships. ASU 2016-05 is effective for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years with an option to early adopt. The Company has an option to adopt the amendments of this ASU either on a prospective basis or modified retrospective basis. The Company does not expect the adoption of this guidance to have a material impact on its Consolidated Financial Statements. In March 2016, the FASB issued ASU 2016-06, Derivatives and Hedging (Topic 815): Contingent Put and Call Options in Debt Instruments that requires an entity to use a four step decision model when assessing contingent call (put) options that can accelerate the payment of principal on debt instruments to determine whether they are clearly and closely related to their debt hosts. ASU 2016-06 will be effective for interim and annual reporting periods beginning after December 15, 2016 and must be implemented using a modified retrospective basis. Early adoption is permitted. The Company does not expect the adoption of this guidance to have a material impact on its Consolidated Financial Statements. In March 2016, the FASB issued ASU 2016-07, Investments—Equity Method and Joint Ventures (Topic 323): Simplifying the Transition to the Equity Method of Accounting, to eliminate the requirement for an investor to retroactively apply the equity method when its increase in ownership interest (or degree of influence) in an investee triggers equity method accounting. The amendments in ASU 2016-07 also require that an entity that has an available-for-sale equity security that becomes qualified for the equity method of accounting recognize through earnings the unrealized holding gain or loss in AOCI at the date the investment becomes qualified for use of the equity method. ASU 2016-07 is effective for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years and should be applied prospectively. Early adoption is not permitted. The Company is currently evaluating the impact on its Consolidated Financial Statements. In March 2016, the FASB issued ASU 2016-09, Compensation—Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting, to simplify several aspects of the accounting for share-based payment transactions, including the accounting for income taxes, forfeitures, statutory tax withholding requirements, as well as classification in the statement of cash flows. ASU 2016-09 also eliminated certain guidance in ASC 718 on when awards cease to be within the scope of ASC 718 and instead become subject to other U.S. GAAP requirements. ASU 2016-09 is effective for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years. Early adoption is permitted. The Company is currently evaluating the impact on its Consolidated Financial Statements. In June 2016, the FASB issued ASU 2016-13 Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments to introduce a new approach based on expected losses to estimate credit losses on certain types of financial instruments, which modifies the impairment model for available-for-sale debt securities and provides for a simplified accounting model for purchased financial assets with credit deterioration since their origination. The new “expected credit loss” impairment model will apply to most financial assets measured at amortized cost and certain other instruments, including trade and other receivables, loans, held-to-maturity debt securities, net investments in leases and off-balance-sheet credit exposures. ASU 2016-13 also expands the disclosure requirements regarding an entity’s assumptions, models and methods for estimating the allowance for loans and lease losses and requires disclosure of the amortized cost balance for each class of financial asset by credit quality indicator, disaggregated by the year of origination (i.e., by vintage year). ASU 2016-13 is effective for the fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Earlier adoption is permitted as of the fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. The Company is currently evaluating the impact on its Consolidated Financial Statements.
Credit Quality Indicators	Credit Quality Indicators All loans are subject to the Company’s internal and external credit review and monitoring. Loans are risk rated based on an 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 single-family residential loans, payment performance/delinquency is the driving indicator for the risk ratings. Risk ratings are the overall credit quality indicator for the Company and the credit quality indicator utilized for estimating the appropriate allowance for loan losses. The Company utilizes a risk rating system, which can be classified within 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 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 based on changes in the borrowers’ financial status and collectability.
Impaired Loans	Impaired Loans 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. A loan is considered impaired when, based on current information and events, it is probable that the Company will not be able to collect all scheduled payments of principal or interest due in accordance with the original contractual terms. Impaired loans are measured based on the present value of expected future cash flows discounted at the loan’s effective interest rate or, as 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 and the loan is classified as nonperforming and uncollectible, the deficiency is charged-off against the allowance for loan losses. Impaired loans exclude the homogeneous consumer loan portfolio, which is evaluated collectively for impairment. The Company’s impaired loans include predominantly non-PCI loans held-for-investment on nonaccrual status and any non-PCI loans modified in a TDR, which may be on accrual or nonaccrual status.
Investments in Qualified Affordable Housing Partnerships, Net	Investments in Qualified Affordable Housing Partnerships, Net The Company records its investments in qualified affordable housing partnerships, net using the proportional amortization method. 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 on the Consolidated Statements of Income as a component of income tax expense.
Goodwill and Premiums on Acquired Deposits	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. Goodwill Total goodwill of $469.4 million remained unchanged as of June 30, 2016 compared to December 31, 2015 . Goodwill is tested for impairment on an annual basis as of December 31 st , 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.

FAIR VALUE MEASUREMENT AND FA24

FAIR VALUE MEASUREMENT AND FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)	6 Months Ended
	Jun. 30, 2016
Quantitative information
Schedule of assets (liabilities) measured at fair value on a recurring basis	The following tables present financial assets and liabilities that are measured at fair value on a recurring basis as of June 30, 2016 and December 31, 2015 : Assets (Liabilities) Measured at Fair Value on a Recurring Basis ($ in thousands) Fair Value Measurements Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Available-for-sale investment securities: U.S. Treasury securities $ 488,560 $ 488,560 $ — $ — U.S. government agency and U.S. government sponsored enterprise debt securities 703,929 — 703,929 — U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities: Commercial mortgage-backed securities 308,364 — 308,364 — Residential mortgage-backed securities 1,058,901 — 1,058,901 — Municipal securities 153,903 — 153,903 — Non-agency residential mortgage-backed securities: Investment grade 55,975 — 55,975 — Corporate debt securities: Investment grade 416,864 — 416,864 — Non-investment grade 8,408 — 8,408 — Other securities 45,428 36,496 8,932 — Total available-for-sale investment securities $ 3,240,332 $ 525,056 $ 2,715,276 $ — Derivative assets: Foreign currency forward contracts $ 1,732 $ — $ 1,732 $ — Interest rate swaps and options $ 157,035 $ — $ 157,035 $ — Foreign exchange contracts $ 10,078 $ — $ 10,078 $ — Derivative liabilities: Interest rate swaps on certificates of deposit $ (810 ) $ — $ (810 ) $ — Interest rate swaps and options $ (159,776 ) $ — $ (159,776 ) $ — Foreign exchange contracts $ (8,634 ) $ — $ (8,634 ) $ — Credit risk participation agreements (“RPAs”) $ (12 ) $ — $ (12 ) $ — Assets (Liabilities) Measured at Fair Value on a Recurring Basis ($ in thousands) Fair Value Measurements Quoted Prices in Significant Significant Unobservable Inputs (Level 3) Available-for-sale investment securities: U.S. Treasury securities $ 998,515 $ 998,515 $ — $ — U.S. government agency and U.S. government sponsored enterprise debt securities 768,849 — 768,849 — U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities: Commercial mortgage-backed securities 351,662 — 351,662 — Residential mortgage-backed securities 997,396 — 997,396 — Municipal securities 175,649 — 175,649 — Non-agency residential mortgage-backed securities: Investment grade 62,393 — 62,393 — Corporate debt securities: Investment grade 364,713 — 364,713 — Non-investment grade 9,642 — 9,642 — Other securities 44,407 35,635 8,772 — Total available-for-sale investment securities $ 3,773,226 $ 1,034,150 $ 2,739,076 $ — Derivative assets: Foreign currency forward contracts $ 2,365 $ — $ 2,365 $ — Interest rate swaps and options $ 67,215 $ — $ 67,215 $ — Foreign exchange contracts $ 10,254 $ — $ 10,254 $ — Derivative liabilities: Interest rate swaps on certificates of deposit $ (5,213 ) $ — $ (5,213 ) $ — Interest rate swaps and options $ (67,325 ) $ — $ (67,325 ) $ — Foreign exchange contracts $ (9,350 ) $ — $ (9,350 ) $ — RPAs $ (4 ) $ — $ (4 ) $ —
Reconciliation of major asset and liability categories measured at fair value on a recurring using significant unobservable inputs (level3)	The following table presents 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 and six months ended June 30, 2015 : ($ in thousands) Three Months Ended June 30, Six Months Ended June 30, 2015 2015 Corporate Debt Grade Embedded Derivative Corporate Debt Grade Embedded Derivative Beginning balance $ — $ (3,412 ) $ 6,528 $ (3,392 ) Total gains (losses) for the period: Included in earnings (1) — — 960 (20 ) Included in other comprehensive income (2) — — 922 — Sales and settlements: Sales — — (7,219 ) — Settlements — 3,412 (98 ) 3,412 Transfers in and/or out of Level 3 — — (1,093 ) — Ending balance $ — $ — $ — $ — Change in unrealized losses included in earnings relating to assets and liabilities held for the period $ — $ — $ — $ — (1) Net gains or losses (realized and unrealized) of corporate debt securities and embedded derivative liabilities are included in Net gains on sales of available-for-sale investment securities and Other operating expense , respectively, on 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 , on the Consolidated Statements of Comprehensive Income.
Schedule of assets measured at fair value on a nonrecurring basis	The following tables present the carrying amounts of all assets that were still held as of June 30, 2016 and December 31, 2015 for which a nonrecurring fair value measurement was recorded: Assets Measured at Fair Value on a Nonrecurring Basis ($ in thousands) Fair Value Measurements Quoted Prices in Significant Significant Unobservable Inputs (Level 3) Non-PCI impaired loans: Commercial real estate (“CRE”) $ 21,443 $ — $ — $ 21,443 Commercial and industrial (“C&I”) 50,362 — — 50,362 Residential 15,957 — — 15,957 Consumer 1,531 — — 1,531 Total non-PCI impaired loans $ 89,293 $ — $ — $ 89,293 OREO $ 3,647 $ — $ — $ 3,647 Loans held for sale $ 27,895 $ — $ 27,895 $ — Assets Measured at Fair Value on a Nonrecurring Basis ($ in thousands) Fair Value Measurements Quoted Prices in Significant Significant Unobservable Inputs (Level 3) Non-PCI impaired loans: CRE $ 17,252 $ — $ — $ 17,252 C&I 35,558 — — 35,558 Residential 16,472 — — 16,472 Consumer 1,180 — — 1,180 Total non-PCI impaired loans $ 70,462 $ — $ — $ 70,462 OREO $ 4,929 $ — $ — $ 4,929 Loans held for sale $ 29,238 $ — $ 29,238 $ —
Schedule of fair value adjustments of certain assets measured on a nonrecurring basis recognized	The following table presents fair value adjustments of certain assets measured on a nonrecurring basis recognized during the three and six months ended and still held as of June 30, 2016 and 2015 : Three Months Ended June 30, Six Months Ended June 30, ($ in thousands) 2016 2015 2016 2015 Non-PCI impaired loans: CRE $ (261 ) $ (445 ) $ 1,908 $ (905 ) C&I (4,693 ) (6,454 ) (9,149 ) (9,303 ) Residential (4 ) (216 ) 27 (341 ) Consumer (2 ) (1 ) 14 (1 ) Total non-PCI impaired loans $ (4,960 ) $ (7,116 ) $ (7,200 ) $ (10,550 ) OREO $ (1,073 ) $ (200 ) $ (1,529 ) $ (258 ) Loans held for sale $ — $ (517 ) $ (2,351 ) $ (517 )
Schedule of the carrying and fair values per the fair value hierarchy of certain financial instruments	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 June 30, 2016 and December 31, 2015 : ($ in thousands) June 30, 2016 Carrying Amount Level 1 Level 2 Level 3 Estimated Fair Value Financial assets: Cash and cash equivalents $ 1,592,796 $ 1,592,796 $ — $ — $ 1,592,796 Short-term investments $ 229,979 $ — $ 229,979 $ — $ 229,979 Resale agreements (1) $ 1,850,000 $ — $ 1,850,427 $ — $ 1,850,427 Held-to-maturity investment security $ 159,208 $ — $ — $ 158,279 $ 158,279 Loans held for sale $ 51,290 $ — $ 51,290 $ — $ 51,290 Loans receivable, net $ 23,969,599 $ — $ — $ 23,928,765 $ 23,928,765 Investment in FHLB stock $ 18,158 $ — $ 18,158 $ — $ 18,158 Investment in Federal Reserve Bank stock $ 55,216 $ — $ 55,216 $ — $ 55,216 Accrued interest receivable $ 86,503 $ — $ 86,503 $ — $ 86,503 Financial liabilities: Customer deposit accounts: Demand, savings and money market deposits $ 22,484,884 $ — $ 22,484,884 $ — $ 22,484,884 Time deposits $ 5,732,359 $ — $ 5,736,110 $ — $ 5,736,110 Short-term borrowings $ 29,499 $ — $ 29,499 $ — $ 29,499 FHLB advances $ 320,526 $ — $ 332,595 $ — $ 332,595 Repurchase agreements (1) $ 200,000 $ — $ 268,353 $ — $ 268,353 Accrued interest payable $ 8,053 $ — $ 8,053 $ — $ 8,053 Long-term debt $ 196,204 $ — $ 196,826 $ — $ 196,826 (1) Resale and repurchase agreements are reported net pursuant to ASC 210-20-45, Balance Sheet Offsetting . As of June 30, 2016 , $250.0 million out of $450.0 million of repurchase agreements was eligible for netting against resale agreements. December 31, 2015 ($ in thousands) Carrying Level 1 Level 2 Level 3 Estimated Financial assets: Cash and cash equivalents $ 1,360,887 $ 1,360,887 $ — $ — $ 1,360,887 Short-term investments $ 299,916 $ — $ 299,916 $ — $ 299,916 Resale agreements (1) $ 1,600,000 $ — $ 1,533,961 $ — $ 1,533,961 Loans held for sale $ 31,958 $ — $ 31,958 $ — $ 31,958 Loans receivable, net $ 23,378,789 $ — $ — $ 23,000,817 $ 23,000,817 Investment in FHLB stock $ 28,770 $ — $ 28,770 $ — $ 28,770 Investment in Federal Reserve Bank stock $ 54,932 $ — $ 54,932 $ — $ 54,932 Accrued interest receivable $ 89,243 $ — $ 89,243 $ — $ 89,243 Financial liabilities: Customer deposit accounts: Demand, savings and money market deposits $ 20,859,086 $ — $ 20,859,086 $ — $ 20,859,086 Time deposits $ 6,616,895 $ — $ 6,606,942 $ — $ 6,606,942 FHLB advances $ 1,019,424 $ — $ 1,032,000 $ — $ 1,032,000 Accrued interest payable $ 8,848 $ — $ 8,848 $ — $ 8,848 Long-term debt $ 206,084 $ — $ 186,593 $ — $ 186,593 (1) Resale and repurchase agreements are reported net pursuant to ASC 210-20-45, Balance Sheet Offsetting . As of December 31, 2015, the carrying amount of $450.0 million of repurchase agreements was eligible for netting against resale agreements, resulting in no repurchase agreements’ balances reported.
Fair Value, Measurements, Nonrecurring
Quantitative information
Schedule of quantitative information about significant unobservable inputs used in the valuation of assets and liabilities classified as Level 3	The following table presents quantitative information about significant unobservable inputs used in the valuation of assets measured on a nonrecurring basis classified as Level 3 as of June 30, 2016 and December 31, 2015 : ($ in thousands) Fair Value Valuation Unobservable Range of Inputs Weighted June 30, 2016 Non-PCI impaired loans $ 48,169 Discounted cash flow Discount rate 0% — 84% 20% $ 41,124 Market comparables Discount rate (1) 0% — 100% 18% OREO $ 3,647 Appraisal Selling cost 8% 8% December 31, 2015 Non-PCI impaired loans $ 27,522 Discounted cash flow Discount rate 0% — 87% 30% $ 42,940 Market comparables Discount rate (1) 0% — 100% 17% OREO $ 4,929 Appraisal Selling cost 8% 8% (1) Discount rate is adjusted for factors such as liquidation cost of collateral and selling cost.

SECURITIES PURCHASED UNDER RE25

SECURITIES PURCHASED UNDER RESALE AGREEMENTS AND SOLD UNDER REPURCHASE AGREEMENTS (Tables)	6 Months Ended
	Jun. 30, 2016
RESALE AND REPURCHASE AGREEMENTS
Schedule of resale and repurchase agreements	The following tables present resale and repurchase agreements included on the Consolidated Balance Sheets as of June 30, 2016 and December 31, 2015 : ($ in thousands) As of June 30, 2016 Gross Amounts Gross Amounts Net Amounts of Gross Amounts Not Offset on the Assets Financial Collateral Net Amount Resale agreements $ 2,100,000 $ (250,000 ) $ 1,850,000 $ — $ (1,849,189 ) (1) $ 811 Gross Amounts Gross Amounts Net Amounts of on the Gross Amounts Not Offset on the Liabilities Financial Collateral Net Amount Repurchase agreements $ 450,000 $ (250,000 ) $ 200,000 $ — $ (200,000 ) (2) $ — ($ in thousands) As of December 31, 2015 Gross Amounts Gross Amounts Net Amounts of Gross Amounts Not Offset on the Assets Financial Collateral Net Amount Resale agreements $ 2,050,000 $ (450,000 ) $ 1,600,000 $ — $ (1,593,503 ) (1) $ 6,497 Gross Amounts Gross Amounts Net Amounts of on the Gross Amounts Not Offset on the Liabilities Financial Collateral Net Amount Repurchase agreements $ 450,000 $ (450,000 ) $ — $ — $ — (2) $ — (1) 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. (2) 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.

INVESTMENT SECURITIES (Tables)

INVESTMENT SECURITIES (Tables)	6 Months Ended
	Jun. 30, 2016
Investments, Debt and Equity Securities [Abstract]
Schedule of amortized cost, gross unrealized gains, gross unrealized losses and fair value by major categories of investment securities	The following table presents the amortized cost, gross unrealized gains and losses and fair value by major categories of available-for-sale investment securities, which are carried at fair value, and a held-to-maturity investment security, which is carried at amortized cost: ($ in thousands) Amortized Gross Gross Fair As of June 30, 2016 Available-for-sale investment securities: U.S. Treasury securities $ 485,137 $ 3,423 $ — $ 488,560 U.S. government agency and U.S. government sponsored enterprise debt securities 701,085 3,035 (191 ) 703,929 U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities: Commercial mortgage-backed securities 305,724 3,443 (803 ) 308,364 Residential mortgage-backed securities 1,050,583 10,041 (1,723 ) 1,058,901 Municipal securities 149,711 4,246 (54 ) 153,903 Non-agency residential mortgage-backed securities: Investment grade (1) 54,728 1,276 (29 ) 55,975 Corporate debt securities: Investment grade (1) 418,104 475 (1,715 ) 416,864 Non-investment grade (1) 10,191 — (1,783 ) 8,408 Other securities 44,785 706 (63 ) 45,428 Total available-for-sale investment securities 3,220,048 26,645 (6,361 ) 3,240,332 Held-to-maturity investment security: Non-agency commercial mortgage-backed security 159,208 — (929 ) 158,279 Total investment securities $ 3,379,256 $ 26,645 $ (7,290 ) $ 3,398,611 As of December 31, 2015 Available-for-sale investment securities: U.S. Treasury securities $ 1,002,874 $ 33 $ (4,392 ) $ 998,515 U.S. government agency and U.S. government sponsored enterprise debt securities 771,288 555 (2,994 ) 768,849 U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities: Commercial mortgage-backed securities 354,418 268 (3,024 ) 351,662 Residential mortgage-backed securities 996,255 7,542 (6,401 ) 997,396 Municipal securities 173,785 2,657 (793 ) 175,649 Non-agency residential mortgage-backed securities: Investment grade (1) 62,133 433 (173 ) 62,393 Corporate debt securities: Investment grade (1) 366,921 132 (2,340 ) 364,713 Non-investment grade (1) 11,491 — (1,849 ) 9,642 Other securities 44,664 124 (381 ) 44,407 Total available-for-sale investment securities $ 3,783,829 $ 11,744 $ (22,347 ) $ 3,773,226 (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. Classifications are based on the lower of the credit ratings by S&P or Moody’s.
Schedule of gross unrealized losses and related fair value of investment securities	The following table presents 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: ($ in thousands) Less Than 12 Months 12 Months or More Total Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses As of June 30, 2016 Available-for-sale investment securities: U.S. Treasury securities $ — $ — $ — $ — $ — $ — U.S. government agency and U.S. government sponsored enterprise debt securities 85,210 (191 ) — — 85,210 (191 ) U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities: Commercial mortgage-backed securities 50,477 (476 ) 24,377 (327 ) 74,854 (803 ) Residential mortgage-backed securities 295,399 (1,097 ) 26,327 (626 ) 321,726 (1,723 ) Municipal securities 4,398 (50 ) 2,896 (4 ) 7,294 (54 ) Non-agency residential mortgage-backed securities: Investment grade 7,470 (29 ) — — 7,470 (29 ) Corporate debt securities: Investment grade 149,452 (533 ) 91,236 (1,182 ) 240,688 (1,715 ) Non-investment grade — — 8,408 (1,783 ) 8,408 (1,783 ) Other securities 4,500 (1 ) 8,938 (62 ) 13,438 (63 ) Total available-for-sale investment securities $ 596,906 $ (2,377 ) $ 162,182 $ (3,984 ) $ 759,088 $ (6,361 ) Held-to-maturity investment security: Non-agency commercial mortgage-backed security 158,279 $ (929 ) — — 158,279 (929 ) Total investment securities $ 755,185 $ (3,306 ) $ 162,182 $ (3,984 ) $ 917,367 $ (7,290 ) As of December 31, 2015 Available-for-sale investment securities: U.S. Treasury securities $ 907,400 $ (4,250 ) $ 20,282 $ (142 ) $ 927,682 $ (4,392 ) U.S. government agency and U.S. government sponsored enterprise debt securities 541,385 (2,994 ) — — 541,385 (2,994 ) U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities: Commercial mortgage-backed securities 252,340 (2,562 ) 20,793 (462 ) 273,133 (3,024 ) Residential mortgage-backed securities 535,842 (4,530 ) 58,315 (1,871 ) 594,157 (6,401 ) Municipal securities 48,495 (437 ) 14,739 (356 ) 63,234 (793 ) Non-agency residential mortgage-backed securities: Investment grade 5,123 (1 ) 6,242 (172 ) 11,365 (173 ) Corporate debt securities: Investment grade 218,944 (1,189 ) 89,989 (1,151 ) 308,933 (2,340 ) Non-investment grade — — 9,642 (1,849 ) 9,642 (1,849 ) Other securities 17,990 (112 ) 8,731 (269 ) 26,721 (381 ) Total available-for-sale investment securities $ 2,527,519 $ (16,075 ) $ 228,733 $ (6,272 ) $ 2,756,252 $ (22,347 )
Rollforward of other than temporary impairment, credit losses recognized in earnings	The following table presents a rollforward of the amounts related to the OTTI credit losses recognized in earnings for the three and six months ended June 30, 2016 and 2015 : ($ in thousands) Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Beginning balance $ — $ 106,688 $ — $ 112,338 Addition of OTTI previously not recognized — — — — Additional increase 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 $ — $ 106,688
Schedule of the proceeds, gross realized gains and losses related to the sales of investment securities	The following table presents the proceeds, gross realized gains and losses related to the sales of available-for-sale investment securities for the three and six months ended June 30, 2016 and 2015: ($ in thousands) Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Proceeds from sales $ 211,990 $ 292,561 $ 864,743 $ 473,062 Gross realized gains $ 2,836 $ 5,554 $ 6,803 $ 9,958 Gross realized losses $ — $ — $ 125 $ — Related tax expense $ 1,192 $ 2,333 $ 2,808 $ 4,182
Schedule of maturities of investment securities	The following table presents the scheduled maturities of available-for-sale investment securities as of June 30, 2016 : ($ in thousands) Amortized Cost Estimated Fair Value Due within one year $ 854,642 $ 854,787 Due after one year through five years 625,607 633,105 Due after five years through ten years 350,091 352,152 Due after ten years 1,389,708 1,400,288 Total available-for-sale investment securities $ 3,220,048 $ 3,240,332 The following table presents the scheduled maturity of the held-to-maturity investment security as of June 30, 2016 : ($ in thousands) Amortized Cost Estimated Fair Value Due after ten years $ 159,208 $ 158,279

DERIVATIVES (Tables)

DERIVATIVES (Tables)	6 Months Ended
	Jun. 30, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of notional amounts and fair values of derivatives	The following table presents the total notional and fair values of the Company’s derivatives as of June 30, 2016 and December 31, 2015 : ($ in thousands) June 30, 2016 December 31, 2015 Notional Amount Fair Value Notional Amount Fair Value Derivative Assets (1) Derivative Liabilities (1) Derivative Assets (1) Derivative Liabilities (1) Derivatives designated as hedging instruments: Interest rate swaps on certificates of deposit $ 48,365 $ — $ 810 $ 112,913 $ — $ 5,213 Foreign currency forward contracts 85,451 1,732 — 86,590 2,365 — Total derivatives designated as hedging instruments $ 133,816 $ 1,732 $ 810 $ 199,503 $ 2,365 $ 5,213 Derivatives not designated as hedging instruments: Interest rate swaps and options $ 7,069,886 $ 157,035 $ 159,776 $ 6,494,900 $ 67,215 $ 67,325 Foreign exchange contracts 782,104 10,078 8,634 652,993 10,254 9,350 RPAs 47,354 — 12 43,033 — 4 Total derivatives not designated as hedging instruments $ 7,899,344 $ 167,113 $ 168,422 $ 7,190,926 $ 77,469 $ 76,679 (1) Derivative assets are included in Other assets on the Consolidated Balance Sheets. Derivative liabilities are included in Accrued expenses and other liabilities and Interest-bearing deposits on the Consolidated Balance Sheets.
Schedule of net gains (losses) recognized in the Consolidated Statement of Income related to derivatives designated as fair value hedge	The following table presents the net gains (losses) recognized on the Consolidated Statements of Income related to derivatives designated as fair value hedges for the three and six months ended June 30, 2016 and 2015 : ($ in thousands) Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Gains (losses) recorded in interest expense: Recognized on interest rate swaps $ 142 $ (2,291 ) $ 4,371 $ 757 Recognized on certificates of deposit (7 ) 2,294 (3,362 ) (401 ) Net amount recognized on fair value hedges (ineffective portion) $ 135 $ 3 $ 1,009 $ 356
Schedule of gains (losses) related to net investment hedges in accumulated other comprehensive income (losses) and Consolidated Statement of Income	The following table presents the losses recorded in the Foreign currency translation account within AOCI related to the effective portion of the net investment hedges and ineffectiveness recorded on the Consolidated Statements of Income for the three and six months ended June 30, 2016 and 2015 : ($ in thousands) Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Gains recognized in AOCI on net investment hedges (effective portion) $ 1,712 $ — $ 227 $ — Gains (losses) recognized in Foreign exchange income (ineffective portion) $ 449 $ — $ (431 ) $ —
Schedule of net gains (losses) recognized on the Consolidated Statements of Income related to derivatives not designated as hedging instruments	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 for the three and six months ended June 30, 2016 and 2015 : ($ in thousands) Location in Consolidated Statements of Income Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Derivatives not designated as hedging instruments: Interest rate swaps and options Other fees and operating income $ (1,920 ) $ 1,215 $ (2,634 ) $ 621 Foreign exchange contracts Foreign exchange income 3,069 908 8,277 2,216 RPA Other fees and operating income — — (8 ) — Foreign exchange options Foreign exchange income — 37 — 236 Embedded derivative liabilities Other operating expense — 5 — (136 ) Total net income $ 1,149 $ 2,165 $ 5,635 $ 2,937
Schedule of gross derivatives on the Consolidated Balance Sheets and the respective collateral received or pledged in the form of other financial instruments	The following tables present gross derivatives on the Consolidated Balance Sheets and the respective collateral 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 June 30, 2016 Gross Amounts Gross Amounts Net Amounts of Gross Amounts Not Offset on the Assets Financial Collateral Net Amount Derivatives $ 7,698 $ — $ 7,698 $ (7,024 ) (1) $ (553 ) (2) $ 121 Gross Amounts Gross Amounts Net Amounts of Gross Amounts Not Offset on the Liabilities Financial Collateral Net Amount Derivatives $ 166,395 $ — $ 166,395 $ (7,024 ) (1) $ (159,015 ) (3) $ 356 ($ in thousands) As of December 31, 2015 Gross Amounts Gross Amounts Net Amounts of Gross Amounts Not Offset on the Assets Financial Collateral Net Amount Derivatives $ 8,733 $ — $ 8,733 $ (5,293 ) (1) $ (3,068 ) (2) $ 372 Gross Amounts Gross Amounts Net Amounts of Gross Amounts Not Offset on the Liabilities Financial Collateral Net Amount Derivatives $ 78,779 $ — $ 78,779 $ (5,293 ) (1) $ (73,109 ) (3) $ 377 (1) Represents the netting of derivative receivable and payable balances for the same counterparty under enforceable master netting arrangements if the Company has elected to net. (2) Represents $553 thousand and $3.1 million of cash collateral received against derivative assets with the same counterparty that are subject to enforceable master netting arrangements as of June 30, 2016 and December 31, 2015 , respectively. (3) Represents cash and securities pledged against derivative liabilities with the same counterparty that are subject to enforceable master netting arrangements. Includes approximately $52.0 million and $21.1 million of cash collateral posted as of June 30, 2016 and December 31, 2015 , respectively.

LOANS RECEIVABLE AND ALLOWANC28

LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES (Tables)	6 Months Ended
	Jun. 30, 2016
Loans and Leases Receivable Disclosure [Abstract]
Schedule of the composition of non-PCI and PCI loans	The following table presents the composition of the Company’s non-PCI and PCI loans as of June 30, 2016 and December 31, 2015 : ($ in thousands) June 30, 2016 December 31, 2015 Non-PCI Loans PCI Loans (1) Total (1) Non-PCI Loans PCI Loans (1) Total (1) CRE: Income producing $ 7,364,321 $ 448,412 $ 7,812,733 $ 6,937,199 $ 541,275 $ 7,478,474 Construction 522,967 — 522,967 436,776 1,895 438,671 Land 138,342 2,640 140,982 187,409 6,195 193,604 Total CRE 8,025,630 451,052 8,476,682 7,561,384 549,365 8,110,749 C&I: Commercial business 8,402,526 46,610 8,449,136 8,155,991 57,906 8,213,897 Trade finance 714,656 12 714,668 787,800 1,310 789,110 Total C&I 9,117,182 46,622 9,163,804 8,943,791 59,216 9,003,007 Residential: Single-family 3,027,217 158,814 3,186,031 2,877,286 189,633 3,066,919 Multifamily 1,230,358 115,911 1,346,269 1,374,718 148,277 1,522,995 Total residential 4,257,575 274,725 4,532,300 4,252,004 337,910 4,589,914 Consumer 2,041,786 21,644 2,063,430 1,931,828 24,263 1,956,091 Total loans $ 23,442,173 $ 794,043 $ 24,236,216 $ 22,689,007 $ 970,754 $ 23,659,761 Unearned fees, premiums, and discounts, net 151 — 151 (16,013 ) — (16,013 ) Allowance for loan losses (266,511 ) (257 ) (266,768 ) (264,600 ) (359 ) (264,959 ) Loans, net $ 23,175,813 $ 793,786 $ 23,969,599 $ 22,408,394 $ 970,395 $ 23,378,789 (1) Loans net of ASC 310-30 discount.
Summary of credit risk rating for non-PCI and PCI loans by portfolio segment	The following tables present the credit risk rating for non-PCI loans by portfolio segment as of June 30, 2016 and December 31, 2015 : ($ in thousands) Pass/Watch Special Mention Substandard Doubtful Total Non-PCI Loans June 30, 2016 CRE: Income producing $ 7,086,172 $ 51,802 $ 226,347 $ — $ 7,364,321 Construction 519,345 3,622 — — 522,967 Land 124,379 — 13,953 10 138,342 C&I: Commercial business 7,998,058 139,189 234,391 30,888 8,402,526 Trade finance 688,080 1,600 21,271 3,705 714,656 Residential: Single-family 3,002,316 7,035 17,866 — 3,027,217 Multifamily 1,177,818 — 52,540 — 1,230,358 Consumer 2,032,848 3,728 5,210 — 2,041,786 Total $ 22,629,016 $ 206,976 $ 571,578 $ 34,603 $ 23,442,173 ($ in thousands) Pass/Watch Special Mention Substandard Doubtful Total Non-PCI Loans December 31, 2015 CRE: Income producing $ 6,672,951 $ 59,309 $ 204,939 $ — $ 6,937,199 Construction 435,112 1,194 470 — 436,776 Land 172,189 — 15,220 — 187,409 C&I: Commercial business 7,794,735 201,280 135,449 24,527 8,155,991 Trade finance 750,144 13,812 23,844 — 787,800 Residential: Single-family 2,841,722 8,134 27,430 — 2,877,286 Multifamily 1,317,550 2,918 54,250 — 1,374,718 Consumer 1,926,418 883 4,527 — 1,931,828 Total $ 21,910,821 $ 287,530 $ 466,129 $ 24,527 $ 22,689,007 The following tables present the credit risk rating for PCI loans by portfolio segment as of June 30, 2016 and December 31, 2015 : ($ in thousands) Pass/Watch Special Mention Substandard Total PCI Loans June 30, 2016 CRE: Income producing $ 363,469 $ 10,866 $ 74,077 $ 448,412 Construction — — — — Land 2,248 — 392 2,640 C&I: Commercial business 37,284 4,648 4,678 46,610 Trade finance 12 — — 12 Residential: Single-family 155,941 1,227 1,646 158,814 Multifamily 99,886 — 16,025 115,911 Consumer 20,266 452 926 21,644 Total (1) $ 679,106 $ 17,193 $ 97,744 $ 794,043 ($ in thousands) Pass/Watch Special Mention Substandard Total PCI Loans December 31, 2015 CRE: Income producing $ 440,100 $ 4,987 $ 96,188 $ 541,275 Construction — — 1,895 1,895 Land 4,285 — 1,910 6,195 C&I: Commercial business 52,212 819 4,875 57,906 Trade finance 1,310 — — 1,310 Residential: Single-family 184,092 1,293 4,248 189,633 Multifamily 130,770 — 17,507 148,277 Consumer 23,121 452 690 24,263 Total (1) $ 835,890 $ 7,551 $ 127,313 $ 970,754 (1) Loans net of ASC 310-30 discount.
Schedule of aging analysis on non-PCI loans	The following tables present the aging analysis on non-PCI loans as of June 30, 2016 and December 31, 2015 : ($ in thousands) Accruing Loans 30-59 Days Past Due Accruing Loans 60-89 Days Past Due Total Accruing Past Due Loans Nonaccrual Loans Less Than 90 Days Past Due Nonaccrual Loans 90 or More Days Past Due Total Nonaccrual Loans Current Accruing Loans Total Non-PCI Loans June 30, 2016 CRE: Income producing $ 3,557 $ 2,992 $ 6,549 $ 17,860 $ 41,390 $ 59,250 $ 7,298,522 $ 7,364,321 Construction — — — — — — 522,967 522,967 Land 3,340 630 3,970 5,779 10 5,789 128,583 138,342 C&I: Commercial business 4,455 426 4,881 54,516 19,411 73,927 8,323,718 8,402,526 Trade finance — — — 4,734 3,705 8,439 706,217 714,656 Residential: Single-family 5,038 3,264 8,302 2,378 2,739 5,117 3,013,798 3,027,217 Multifamily 4,328 337 4,665 6,474 10,845 17,319 1,208,374 1,230,358 Consumer 5,189 2,261 7,450 131 1,608 1,739 2,032,597 2,041,786 Total $ 25,907 $ 9,910 $ 35,817 $ 91,872 $ 79,708 $ 171,580 $ 23,234,776 $ 23,442,173 ($ in thousands) Accruing Loans 30-59 Days Past Due Accruing Loans 60-89 Days Past Due Total Accruing Past Due Loans Nonaccrual Loans Less Than 90 Days Past Due Nonaccrual Loans 90 or More Days Past Due Total Nonaccrual Loans Current Accruing Loans Total Non-PCI Loans December 31, 2015 CRE: Income producing $ 3,465 $ 25,256 $ 28,721 $ 11,359 $ 17,870 $ 29,229 $ 6,879,249 $ 6,937,199 Construction — — — 14 — 14 436,762 436,776 Land 1,124 — 1,124 277 406 683 185,602 187,409 C&I: Commercial business 1,992 1,185 3,177 50,726 14,009 64,735 8,088,079 8,155,991 Trade finance — — — — — — 787,800 787,800 Residential: Single-family 7,657 2,927 10,584 92 8,634 8,726 2,857,976 2,877,286 Multifamily 6,320 981 7,301 6,486 9,758 16,244 1,351,173 1,374,718 Consumer 2,078 209 2,287 233 1,505 1,738 1,927,803 1,931,828 Total $ 22,636 $ 30,558 $ 53,194 $ 69,187 $ 52,182 $ 121,369 $ 22,514,444 $ 22,689,007
Summary of additions and modifications to non-PCI troubled debt restructurings	The following table presents information for loans modified as TDRs within the previous 12 months that have subsequently defaulted during the six months ended June 30, 2016 and 2015 , and are still in default at period end: Loans Modified as TDRs that Subsequently Defaulted During the Six Months Ended June 30, 2016 2015 ($ in thousands) Number of Recorded Number of Recorded C&I: Commercial business 3 $ 568 — $ — The following tables present the additions to non-PCI TDRs for the three and six months ended June 30, 2016 and 2015 : Loans Modified as TDRs During the Three Months Ended June 30, ($ in thousands) 2016 2015 Number Pre-Modification Post-Modification (1) Financial (2) Number Pre-Modification Post-Modification (1) Financial (2) CRE: Income producing 2 $ 2,152 $ 2,150 $ 43 — $ — $ — $ — Land 1 $ 5,522 $ 5,279 $ — 1 $ 171 $ 100 $ 102 C&I: Commercial business 1 $ 75 $ 75 $ 12 12 $ 37,924 $ 38,117 $ 5,465 Residential: Single-family 1 $ 795 $ 795 $ — — $ — $ — $ — Loans Modified as TDRs During the Six Months Ended June 30, ($ in thousands) 2016 2015 Number Pre-Modification Post-Modification (1) Financial (2) Number Pre-Modification Post-Modification (1) Financial (2) CRE: Income producing 3 $ 15,899 $ 15,802 $ 43 1 $ 828 $ 818 $ — Land 1 $ 5,522 $ 5,279 $ — 1 $ 171 $ 100 $ 102 C&I: Commercial business 5 $ 21,689 $ 15,842 $ 2,618 13 $ 38,090 $ 38,280 $ 5,497 Trade finance 2 $ 7,901 $ 9,256 $ — — $ — $ — $ — Residential: Single-family 2 $ 1,071 $ 1,064 $ — 1 $ 281 $ 281 $ 2 Consumer: 1 $ 344 $ 338 $ 1 — $ — $ — $ — (1) Includes subsequent payments after modification and reflects the balance as of June 30, 2016 and 2015 . (2) The financial impact includes charge-offs and specific reserves recorded at the modification date. The following tables present the non-PCI TDR modifications for the three and six months ended June 30, 2016 and 2015 by modification type: ($ in thousands) Modification Type 2016 2015 Principal (1) Interest Rate Reduction Other Total Principal (1) Principal and Interest (2) Interest Deferments Other Total Three Months Ended June 30, CRE $ 6,275 $ — $ 1,154 $ 7,429 $ — $ — $ — $ 100 $ 100 C&I 75 — — 75 13,488 18,629 6,000 — 38,117 Residential — 795 — 795 — — — — — Total $ 6,350 $ 795 $ 1,154 $ 8,299 $ 13,488 $ 18,629 $ 6,000 $ 100 $ 38,217 ($ in thousands) Modification Type 2016 2015 Principal (1) Interest Rate Reduction Other Total Principal (1) Principal and Interest (2) Interest Deferments Other Total Six Months Ended June 30, CRE $ 19,927 $ — $ 1,154 $ 21,081 $ — $ 818 $ — $ 100 $ 918 C&I 18,589 1,986 4,523 25,098 13,651 18,629 6,000 — 38,280 Residential 269 795 — 1,064 281 — — — 281 Consumer 338 — — 338 — — — — — Total $ 39,123 $ 2,781 $ 5,677 $ 47,581 $ 13,932 $ 19,447 $ 6,000 $ 100 $ 39,479 (1) Principal modification includes forbearance payments, term extensions and principal deferments that modify the terms of the loan from principal and interest payments to interest payments only. (2) Principal and interest modification includes principal and interest deferments or reductions.
Summary of non-PCI impaired loans	The following tables present information on impaired non-PCI loans as of June 30, 2016 and December 31, 2015 : ($ in thousands) Unpaid Principal Balance Recorded Investment With No Allowance Recorded Investment With Allowance Total Recorded Investment Related Allowance June 30, 2016 CRE: Income producing $ 86,401 $ 59,990 $ 17,763 $ 77,753 $ 464 Land 6,910 5,279 1,114 6,393 74 C&I: Commercial business 115,023 32,444 65,559 98,003 21,260 Trade finance 13,158 9,256 3,775 13,031 22 Residential: Single-family 14,154 2,378 10,294 12,672 378 Multifamily 26,606 18,375 6,313 24,688 271 Consumer 1,577 — 1,577 1,577 45 Total $ 263,829 $ 127,722 $ 106,395 $ 234,117 $ 22,514 ($ in thousands) Unpaid Principal Balance Recorded Investment With No Allowance Recorded Investment With Allowance Total Recorded Investment Related Allowance December 31, 2015 CRE: Income producing $ 47,043 $ 24,347 $ 15,720 $ 40,067 $ 3,148 Construction 66 — 14 14 1 Land 1,537 632 683 1,315 118 C&I: Commercial business 81,720 31,045 40,111 71,156 15,993 Trade finance 10,675 — 10,675 10,675 95 Residential: Single-family 16,486 4,401 10,611 15,012 584 Multifamily 25,634 16,944 6,783 23,727 339 Consumer 1,240 — 1,240 1,240 60 Total $ 184,401 $ 77,369 $ 85,837 $ 163,206 $ 20,338
Schedule of the average recorded investment and interest income recognized on non-PCI impaired loans	The following table presents the average recorded investment and interest income recognized on non-PCI impaired loans during the three and six months ended June 30, 2016 and 2015 : ($ in thousands) Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Average Recognized (1) Average Recognized (1) Average Recorded Investment Recognized Interest Income (1) Average Recognized Interest Income (1) CRE: Income producing $ 78,623 $ 404 $ 46,042 $ 134 $ 79,549 $ 816 $ 46,897 $ 268 Construction — — 14 — — — 14 — Land 6,690 8 5,876 10 6,859 17 5,951 20 C&I: Commercial business 100,124 270 73,306 761 100,308 530 71,644 1,550 Trade finance 12,716 67 11,623 51 13,514 133 11,739 134 Residential: Single-family 12,713 74 15,595 68 12,797 148 15,658 137 Multifamily 24,836 77 23,690 190 25,045 154 23,757 379 Consumer 1,582 16 1,256 12 1,586 31 1,258 23 Total impaired non-PCI loans $ 237,284 $ 916 $ 177,402 $ 1,226 $ 239,658 $ 1,829 $ 176,918 $ 2,511 (1) Includes interest recognized on accruing non-PCI TDRs. Interest payments received on nonaccrual non-PCI loans are reflected as a reduction to principal and not as interest income.
Summary of the activity in the allowance for credit losses by portfolio segment	The following tables present a summary of activities in the allowance for loan losses by portfolio segment for the three and six months ended June 30, 2016 and 2015 : ($ in thousands) Non-PCI Loans PCI Loans Total CRE C&I Residential Consumer Total Three Months Ended June 30, 2016 Beginning balance $ 82,538 $ 134,077 $ 33,935 $ 9,360 $ 259,910 $ 328 $ 260,238 (Reversal of) provision for loan losses (4,439 ) 15,347 (2,671 ) (1,017 ) 7,220 (71 ) 7,149 Charge-offs (139 ) (2,214 ) — (3 ) (2,356 ) — (2,356 ) Recoveries 142 1,217 297 81 1,737 — 1,737 Net recoveries (charge-offs) 3 (997 ) 297 78 (619 ) — (619 ) Ending balance $ 78,102 $ 148,427 $ 31,561 $ 8,421 $ 266,511 $ 257 $ 266,768 ($ in thousands) Non-PCI Loans PCI Loans Total CRE C&I Residential Consumer Total Three Months Ended June 30, 2015 Beginning balance $ 69,740 $ 133,914 $ 42,990 $ 10,451 $ 257,095 $ 643 $ 257,738 Provision for (reversal of) loan losses 5,739 (2,716 ) (3,318 ) (289 ) (584 ) (31 ) (615 ) Charge-offs (348 ) (2,843 ) (1 ) — (3,192 ) — (3,192 ) Recoveries 365 5,607 997 329 7,298 — 7,298 Net recoveries 17 2,764 996 329 4,106 — 4,106 Ending balance $ 75,496 $ 133,962 $ 40,668 $ 10,491 $ 260,617 $ 612 $ 261,229 ($ in thousands) Non-PCI Loans PCI Loans CRE C&I Residential Consumer Total Total Six Months Ended June 30, 2016 Beginning balance $ 81,191 $ 134,597 $ 39,292 $ 9,520 $ 264,600 $ 359 $ 264,959 (Reversal of) provision for loan losses (3,133 ) 20,001 (7,988 ) (1,243 ) 7,637 (102 ) 7,535 Charge-offs (195 ) (8,074 ) (137 ) (4 ) (8,410 ) — (8,410 ) Recoveries 239 1,903 394 148 2,684 — 2,684 Net recoveries (charge-offs) 44 (6,171 ) 257 144 (5,726 ) — (5,726 ) Ending balance $ 78,102 $ 148,427 $ 31,561 $ 8,421 $ 266,511 $ 257 $ 266,768 ($ in thousands) Non-PCI Loans PCI Loans Total CRE C&I Residential Consumer Total Six Months Ended June 30, 2015 Beginning balance $ 72,263 $ 134,598 $ 43,856 $ 10,248 $ 260,965 $ 714 $ 261,679 Provision for (reversal of) loan losses 3,406 2,662 (4,889 ) 375 1,554 (102 ) 1,452 Charge-offs (1,350 ) (9,432 ) (747 ) (463 ) (11,992 ) — (11,992 ) Recoveries 1,177 6,134 2,448 331 10,090 — 10,090 Net (charge-offs) recoveries (173 ) (3,298 ) 1,701 (132 ) (1,902 ) — (1,902 ) Ending balance $ 75,496 $ 133,962 $ 40,668 $ 10,491 $ 260,617 $ 612 $ 261,229 For further information on accounting policies and the methodology used to estimate the allowance for credit losses and loan charge-offs, please see Note 1 — Summary of Significant Accounting Policies to the Consolidated Financial Statements of the Company’s 2015 Form 10-K. The following table presents a summary of activities in the allowance for unfunded credit reserves during the three and six months ended June 30, 2016 and 2015 : ($ in thousands) Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Beginning balance $ 21,414 $ 15,632 $ 20,360 $ 12,712 (Reversal of) provision for unfunded lending commitments (1,096 ) 4,109 (42 ) 7,029 Ending balance $ 20,318 $ 19,741 $ 20,318 $ 19,741
Summary of allowance for loan losses and recorded investment by portfolio segment and impairment methodology	The following tables present the Company’s allowance for loan losses and recorded investments by portfolio segment and impairment methodology as of June 30, 2016 and December 31, 2015 : ($ in thousands) CRE C&I Residential Consumer Total As of June 30, 2016 Allowance for loan losses Individually evaluated for impairment $ 538 $ 21,282 $ 649 $ 45 $ 22,514 Collectively evaluated for impairment 77,564 127,145 30,912 8,376 243,997 Acquired with deteriorated credit quality 243 8 6 — 257 Ending balance $ 78,345 $ 148,435 $ 31,567 $ 8,421 $ 266,768 Recorded investment in loans Individually evaluated for impairment $ 84,146 $ 111,034 $ 37,360 $ 1,577 $ 234,117 Collectively evaluated for impairment 7,941,484 9,006,148 4,220,215 2,040,209 23,208,056 Acquired with deteriorated credit quality (1) 451,052 46,622 274,725 21,644 794,043 Ending balance (1) $ 8,476,682 $ 9,163,804 $ 4,532,300 $ 2,063,430 $ 24,236,216 ($ in thousands) CRE C&I Residential Consumer Total As of December 31, 2015 Allowance for loan losses Individually evaluated for impairment $ 3,267 $ 16,088 $ 923 $ 60 $ 20,338 Collectively evaluated for impairment 77,924 118,509 38,369 9,460 244,262 Acquired with deteriorated credit quality 347 9 3 — 359 Ending balance $ 81,538 $ 134,606 $ 39,295 $ 9,520 $ 264,959 Recorded investment in loans Individually evaluated for impairment $ 41,396 $ 81,831 $ 38,739 $ 1,240 $ 163,206 Collectively evaluated for impairment 7,519,988 8,861,960 4,213,265 1,930,588 22,525,801 Acquired with deteriorated credit quality (1) 549,365 59,216 337,910 24,263 970,754 Ending balance (1) $ 8,110,749 $ 9,003,007 $ 4,589,914 $ 1,956,091 $ 23,659,761 (1) Loans net of ASC 310-30 discount.
Summary of changes in the accretable yield for the PCI loans	The following table presents the changes in accretable yield for PCI loans for the three and six months ended June 30, 2016 and 2015 : ($ in thousands) Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Beginning balance $ 185,991 $ 293,155 $ 214,907 $ 311,688 Accretion (16,254 ) (23,359 ) (38,683 ) (53,928 ) Changes in expected cash flows (2,960 ) 2,066 (9,447 ) 14,102 Ending balance $ 166,777 $ 271,862 $ 166,777 $ 271,862

INVESTMENTS IN QUALIFIED AFFO29

INVESTMENTS IN QUALIFIED AFFORDABLE HOUSING PARTNERSHIPS, TAX CREDIT AND OTHER INVESTMENTS, NET (Tables)	6 Months Ended
	Jun. 30, 2016
INVESTMENTS IN QUALIFIED AFFORDABLE HOUSING PARTNERSHIPS, TAX CREDIT AND OTHER INVESTMENTS, NET
Schedule of investments in qualified affordable housing partnerships, net and related unfunded commitments	The following table presents the balances of the Company’s investments in qualified affordable housing partnerships, net and related unfunded commitments as of the periods indicated: ($ in thousands) June 30, 2016 December 31, 2015 Investments in qualified affordable housing partnerships, net $ 179,657 $ 193,978 Accrued expenses and other liabilities — Unfunded commitments $ 45,995 $ 61,525
Schedule of other information related to investments in qualified affordable housing partnerships, net	The following table presents additional information related to the Company’s investments in qualified affordable housing partnerships, net for the periods indicated: ($ in thousands) Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Tax credits and other tax benefits recognized $ 8,518 $ 8,605 $ 17,970 $ 17,380 Amortization expense included in income tax expense $ 7,345 $ 6,152 $ 14,311 $ 12,396

GOODWILL AND OTHER INTANGIBLE30

GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)	6 Months Ended
	Jun. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of intangible assets and accumulated amortization	The following table presents the gross carrying value of intangible assets and accumulated amortization as of June 30, 2016 and December 31, 2015 : ($ in thousands) June 30, 2016 December 31, 2015 Gross balance $ 108,814 $ 108,814 Accumulated amortization 76,893 72,739 Net carrying balance $ 31,921 $ 36,075
Schedule of estimated future amortization expense of premiums on acquired deposits	The following table presents the estimated future amortization expense of premiums on acquired deposits: Year Ended December 31, Amount ($ in thousands) Remainder of 2016 $ 3,932 2017 6,935 2018 5,883 2019 4,864 2020 3,846 Thereafter 6,461 Total $ 31,921

COMMITMENTS AND CONTINGENCIES (

COMMITMENTS AND CONTINGENCIES (Tables)	6 Months Ended
	Jun. 30, 2016
Commitments and Contingencies Disclosure [Abstract]
Schedule of credit-related commitments	The following table presents the Company’s credit-related commitments as of the periods indicated: ($ in thousands) June 30, 2016 December 31, 2015 Loan commitments $ 4,758,116 $ 3,370,271 Commercial letters of credit and SBLCs $ 1,447,447 $ 1,293,547

STOCK COMPENSATION PLANS (Table

STOCK COMPENSATION PLANS (Tables)	6 Months Ended
	Jun. 30, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of stock compensation expense and related net tax benefit	The following table presents the total stock compensation expense and the related net tax benefit associated with the Company’s various employee share-based compensation plans for the three and six months ended June 30, 2016 and 2015 : ($ in thousands) Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Stock compensation costs $ 4,635 $ 3,698 $ 9,210 $ 7,652 Net tax benefit recognized in equity for stock compensation plans $ 19 $ 51 $ 1,005 $ 3,196
Summary of activity for time-based and performance-based restricted stock units	The following table presents a summary of the activity for the Company’s time-based and performance-based RSUs for the six months ended June 30, 2016 based on the target amount of awards: Six Months Ended June 30, 2016 Time-Based RSUs Performance-Based RSUs Shares Weighted Average Grant-Date Fair Value Shares Weighted Average Grant-Date Fair Value Outstanding at beginning of period 933,312 $ 36.83 389,358 $ 34.21 Granted 486,607 31.37 159,407 29.18 Vested (114,824 ) 25.12 (138,019 ) 25.25 Forfeited (56,581 ) 35.95 — — Outstanding at end of period 1,248,514 $ 35.82 410,746 $ 35.27

STOCKHOLDERS' EQUITY AND EARN33

STOCKHOLDERS' EQUITY AND EARNINGS PER SHARE (Tables)	6 Months Ended
	Jun. 30, 2016
STOCKHOLDERS' EQUITY AND EARNINGS PER SHARE
Schedule of earnings per share calculations	The following table presents EPS calculations for the three and six months ended June 30, 2016 and 2015 : Three Months Ended June 30, Six Months Ended June 30, ($ in thousands, except per share data, shares in thousands) 2016 2015 2016 2015 Basic Net income $ 103,284 $ 98,748 $ 210,800 $ 198,775 Less: Earnings allocated to participating securities — — — 3 Net income allocated to common stockholders $ 103,284 $ 98,748 $ 210,800 $ 198,772 Basic weighted average number of shares outstanding 144,101 143,846 144,029 143,751 Basic EPS $ 0.72 $ 0.69 $ 1.46 $ 1.38 Diluted Net income allocated to diluted common stockholders $ 103,284 $ 98,748 $ 210,800 $ 198,772 Basic weighted average number of shares outstanding 144,101 143,846 144,029 143,751 Diluted potential common shares (1) 977 634 944 657 Diluted weighted average number of shares outstanding 145,078 144,480 144,973 144,408 Diluted EPS $ 0.71 $ 0.68 $ 1.45 $ 1.38 (1) Includes dilutive shares from RSUs and warrants for the three and six months ended June 30, 2016 and 2015. Also includes dilutive shares from stock options for the three and six months ended June 30, 2015 .

ACCUMULATED OTHER COMPREHENSI34

ACCUMULATED OTHER COMPREHENSIVE INCOME (Tables)	6 Months Ended
	Jun. 30, 2016
Equity [Abstract]
Schedule of the changes in components of accumulated other comprehensive income (loss) balances	The following tables present the changes in the components of AOCI balances for the three and six months ended June 30, 2016 and 2015 : ($ in thousands) Three Months Ended June 30, 2016 2015 Available- for-Sale Investment Securities Foreign Currency Translation Adjustments (1) Total Available- for-Sale Investment Securities Total Beginning balance $ 6,772 $ (8,830 ) $ (2,058 ) $ 13,555 $ 13,555 Net unrealized gains (losses) arising during the period 6,628 (4,638 ) 1,990 (4,904 ) (4,904 ) Amounts reclassified from AOCI (1,644 ) — (1,644 ) (3,221 ) (3,221 ) Changes, net of taxes 4,984 (4,638 ) 346 (8,125 ) (8,125 ) Ending balance $ 11,756 $ (13,468 ) $ (1,712 ) $ 5,430 $ 5,430 ($ in thousands) Six Months Ended June 30, 2016 2015 Available- for-Sale Investment Securities Foreign Currency Translation Adjustments (1) Total Available- for-Sale Investment Securities Total Beginning balance $ (6,144 ) $ (8,797 ) $ (14,941 ) $ 4,237 $ 4,237 Net unrealized gains (losses) arising during the period 21,770 (4,671 ) 17,099 6,969 6,969 Amounts reclassified from AOCI (3,870 ) — (3,870 ) (5,776 ) (5,776 ) Changes, net of taxes 17,900 (4,671 ) 13,229 1,193 1,193 Ending balance $ 11,756 $ (13,468 ) $ (1,712 ) $ 5,430 $ 5,430 (1) Represents foreign currency translation adjustments related to the Company’s net investment in non-U.S. operations, including related hedges. In the third quarter of 2015, there was a change in functional currency from USD to the local currency of the Company’s foreign subsidiary.
Schedule of components of other comprehensive income (loss), reclassifications to net income by income statement line item and the related tax effects	The following table presents the components of other comprehensive income (loss), reclassifications to net income and the related tax effects for the three and six months ended June 30, 2016 and 2015 : ($ in thousands) Three Months Ended June 30, 2016 2015 Before-Tax Tax Net-of-Tax Before-Tax Tax Net-of-Tax Available-for-sale investment securities: Net unrealized gains (losses) arising during the period $ 11,435 $ (4,807 ) $ 6,628 $ (8,455 ) $ 3,551 $ (4,904 ) Net realized gains reclassified into net income (1) (2,836 ) 1,192 (1,644 ) (5,554 ) 2,333 (3,221 ) Net change 8,599 (3,615 ) 4,984 (14,009 ) 5,884 (8,125 ) Foreign currency translation adjustments: Net unrealized losses arising during period (4,638 ) — (4,638 ) — — — Net change (4,638 ) — (4,638 ) — — — Other comprehensive income (loss) $ 3,961 $ (3,615 ) $ 346 $ (14,009 ) $ 5,884 $ (8,125 ) ($ in thousands) Six Months Ended June 30, 2016 2015 Before-Tax Tax Net-of-Tax Before-Tax Tax Net-of-Tax Available-for-sale investment securities: Net unrealized gains arising during the period $ 37,565 $ (15,795 ) $ 21,770 $ 12,014 $ (5,045 ) $ 6,969 Net realized gains reclassified into net income (1) (6,678 ) 2,808 (3,870 ) (9,958 ) 4,182 (5,776 ) Net change 30,887 (12,987 ) 17,900 2,056 (863 ) 1,193 Foreign currency translation adjustments: Net unrealized losses arising during period (4,671 ) — (4,671 ) — — — Net change (4,671 ) — (4,671 ) — — — Other comprehensive income $ 26,216 $ (12,987 ) $ 13,229 $ 2,056 $ (863 ) $ 1,193 (1) For the three and six months ended June 30, 2016 and 2015 , the pretax amount was reported in Net gains on sales of available-for-sale investment securities on the Consolidated Statements of Income.

BUSINESS SEGMENTS (Tables)

BUSINESS SEGMENTS (Tables)	6 Months Ended
	Jun. 30, 2016
Segment Reporting [Abstract]
Schedule of operating results and key financial measures for operating segments	The following tables present the operating results and other key financial measures for the individual operating segments as of and for the three and six months ended June 30, 2016 and 2015 : ($ in thousands) Three Months Ended June 30, 2016 Retail Banking Commercial Banking Other Total Interest income $ 78,635 $ 177,426 $ 22,804 $ 278,865 Charge for funds used (23,798 ) (52,681 ) (6,770 ) (83,249 ) Interest spread on funds used 54,837 124,745 16,034 195,616 Interest expense (14,672 ) (4,240 ) (6,369 ) (25,281 ) Credit on funds provided 69,778 8,472 4,999 83,249 Interest spread on funds provided 55,106 4,232 (1,370 ) 57,968 Net interest income $ 109,943 $ 128,977 $ 14,664 $ 253,584 Provision for credit losses $ 2,445 $ 3,608 $ — $ 6,053 Depreciation, amortization and (accretion), net $ (546 ) $ (9,267 ) $ 22,287 $ 12,474 Goodwill $ 357,207 $ 112,226 $ — $ 469,433 Segment pretax profit $ 36,264 $ 95,179 $ 11,473 $ 142,916 Segment assets $ 7,437,534 $ 18,196,664 $ 7,318,014 $ 32,952,212 ($ in thousands) Three Months Ended June 30, 2015 Retail Commercial Other Total Interest income $ 82,729 $ 157,337 $ 15,379 $ 255,445 Charge for funds used (21,357 ) (38,328 ) (13,723 ) (73,408 ) Interest spread on funds used 61,372 119,009 1,656 182,037 Interest expense (12,996 ) (4,710 ) (10,247 ) (27,953 ) Credit on funds provided 60,950 7,995 4,463 73,408 Interest spread on funds provided 47,954 3,285 (5,784 ) 45,455 Net interest income (loss) $ 109,326 $ 122,294 $ (4,128 ) $ 227,492 (Reversal of) provision for credit losses $ (3,454 ) $ 6,948 $ — $ 3,494 Depreciation, amortization and (accretion), net (1) $ 3,235 $ (6,054 ) $ 8,938 $ 6,119 Goodwill $ 357,207 $ 112,226 $ — $ 469,433 Segment pretax profit (loss) $ 55,349 $ 97,269 $ (8,197 ) $ 144,421 Segment assets $ 7,373,641 $ 16,141,368 $ 6,549,063 $ 30,064,072 ($ in thousands) Six Months Ended June 30, 2016 Retail Banking Commercial Banking Other Total Interest income $ 156,006 $ 354,508 $ 44,523 $ 555,037 Charge for funds used (46,450 ) (106,472 ) (18,607 ) (171,529 ) Interest spread on funds used 109,556 248,036 25,916 383,508 Interest expense (29,278 ) (8,266 ) (11,705 ) (49,249 ) Credit on funds provided 142,209 18,449 10,871 171,529 Interest spread on funds provided 112,931 10,183 (834 ) 122,280 Net interest income $ 222,487 $ 258,219 $ 25,082 $ 505,788 Provision for credit losses $ 863 $ 6,630 $ — $ 7,493 Depreciation, amortization and (accretion), net $ (503 ) $ (20,040 ) $ 45,775 $ 25,232 Goodwill $ 357,207 $ 112,226 $ — $ 469,433 Segment pretax profit $ 82,209 $ 188,008 $ 17,370 $ 287,587 Segment assets $ 7,437,534 $ 18,196,664 $ 7,318,014 $ 32,952,212 ($ in thousands) Six Months Ended June 30, 2015 Retail Commercial Other Total Interest income $ 170,175 $ 316,122 $ 32,409 $ 518,706 Charge for funds used (44,656 ) (75,678 ) (23,168 ) (143,502 ) Interest spread on funds used 125,519 240,444 9,241 375,204 Interest expense (25,219 ) (8,973 ) (21,305 ) (55,497 ) Credit on funds provided 118,618 16,010 8,874 143,502 Interest spread on funds provided 93,399 7,037 (12,431 ) 88,005 Net interest income (loss) $ 218,918 $ 247,481 $ (3,190 ) $ 463,209 (Reversal of) provision for credit losses $ (2,723 ) $ 11,204 $ — $ 8,481 Depreciation, amortization and (accretion), net (1) $ 4,917 $ (16,531 ) $ 21,860 $ 10,246 Goodwill $ 357,207 $ 112,226 $ — $ 469,433 Segment pretax profit (loss) $ 108,284 $ 190,444 $ (7,481 ) $ 291,247 Segment assets $ 7,373,641 $ 16,141,368 $ 6,549,063 $ 30,064,072 (1) Includes amortization and accretion related to the FDIC indemnification asset/net payable to the FDIC

BASIS OF PRESENTATION (Details)

BASIS OF PRESENTATION (Details)	Jun. 30, 2016trust
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of wholly-owned subsidiaries that are statutory business trusts (the Trusts)	6

FAIR VALUE MEASUREMENT AND FA37

FAIR VALUE MEASUREMENT AND FAIR VALUE OF FINANCIAL INSTRUMENTS (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Investment securities available-for-sale
Available-for-sale investment securities	$ 3,240,332	$ 3,773,226
U.S. Treasury securities
Investment securities available-for-sale
Available-for-sale investment securities	488,560	998,515
U.S. government agency and U.S. government sponsored enterprise debt securities
Investment securities available-for-sale
Available-for-sale investment securities	703,929	768,849
U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities - Commercial mortgage-backed securities
Investment securities available-for-sale
Available-for-sale investment securities	308,364	351,662
U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities - Residential mortgage-backed securities
Investment securities available-for-sale
Available-for-sale investment securities	1,058,901	997,396
Municipal securities
Investment securities available-for-sale
Available-for-sale investment securities	153,903	175,649
Non-agency residential mortgage-backed securities | Investment grade
Investment securities available-for-sale
Available-for-sale investment securities	55,975	62,393
Corporate debt securities | Investment grade
Investment securities available-for-sale
Available-for-sale investment securities	416,864	364,713
Corporate debt securities | Non-investment grade
Investment securities available-for-sale
Available-for-sale investment securities	8,408	9,642
Other securities
Investment securities available-for-sale
Available-for-sale investment securities	45,428	44,407
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Investment securities available-for-sale
Available-for-sale investment securities	525,056	1,034,150
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. Treasury securities
Investment securities available-for-sale
Available-for-sale investment securities	488,560	998,515
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other securities
Investment securities available-for-sale
Available-for-sale investment securities	36,496	35,635
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Investment securities available-for-sale
Available-for-sale investment securities	2,715,276	2,739,076
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Foreign currency forward contracts
Derivative
Derivative assets	1,732	2,365
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Interest rate swaps and options
Derivative
Derivative assets	157,035	67,215
Derivative liabilities	(159,776)	(67,325)
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Foreign exchange contracts
Derivative
Derivative assets	10,078	10,254
Derivative liabilities	(8,634)	(9,350)
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Interest rate swaps on certificates of deposit
Derivative
Derivative liabilities	(810)	(5,213)
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Credit risk participation agreements (“RPAs”)
Derivative
Derivative liabilities	(12)	(4)
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | U.S. government agency and U.S. government sponsored enterprise debt securities
Investment securities available-for-sale
Available-for-sale investment securities	703,929	768,849
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
Investment securities available-for-sale
Available-for-sale investment securities	308,364	351,662
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
Investment securities available-for-sale
Available-for-sale investment securities	1,058,901	997,396
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Municipal securities
Investment securities available-for-sale
Available-for-sale investment securities	153,903	175,649
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Non-agency residential mortgage-backed securities | Investment grade
Investment securities available-for-sale
Available-for-sale investment securities	55,975	62,393
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Corporate debt securities | Investment grade
Investment securities available-for-sale
Available-for-sale investment securities	416,864	364,713
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Corporate debt securities | Non-investment grade
Investment securities available-for-sale
Available-for-sale investment securities	8,408	9,642
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Other securities
Investment securities available-for-sale
Available-for-sale investment securities	8,932	8,772
Fair Value, Measurements, Recurring | Fair Value Measurements
Investment securities available-for-sale
Available-for-sale investment securities	3,240,332	3,773,226
Fair Value, Measurements, Recurring | Fair Value Measurements | Foreign currency forward contracts
Derivative
Derivative assets	1,732	2,365
Fair Value, Measurements, Recurring | Fair Value Measurements | Interest rate swaps and options
Derivative
Derivative assets	157,035	67,215
Derivative liabilities	(159,776)	(67,325)
Fair Value, Measurements, Recurring | Fair Value Measurements | Foreign exchange contracts
Derivative
Derivative assets	10,078	10,254
Derivative liabilities	(8,634)	(9,350)
Fair Value, Measurements, Recurring | Fair Value Measurements | Interest rate swaps on certificates of deposit
Derivative
Derivative liabilities	(810)	(5,213)
Fair Value, Measurements, Recurring | Fair Value Measurements | Credit risk participation agreements (“RPAs”)
Derivative
Derivative liabilities	(12)	(4)
Fair Value, Measurements, Recurring | Fair Value Measurements | U.S. Treasury securities
Investment securities available-for-sale
Available-for-sale investment securities	488,560	998,515
Fair Value, Measurements, Recurring | Fair Value Measurements | U.S. government agency and U.S. government sponsored enterprise debt securities
Investment securities available-for-sale
Available-for-sale investment securities	703,929	768,849
Fair Value, Measurements, Recurring | Fair Value Measurements | U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities - Commercial mortgage-backed securities
Investment securities available-for-sale
Available-for-sale investment securities	308,364	351,662
Fair Value, Measurements, Recurring | Fair Value Measurements | U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities - Residential mortgage-backed securities
Investment securities available-for-sale
Available-for-sale investment securities	1,058,901	997,396
Fair Value, Measurements, Recurring | Fair Value Measurements | Municipal securities
Investment securities available-for-sale
Available-for-sale investment securities	153,903	175,649
Fair Value, Measurements, Recurring | Fair Value Measurements | Non-agency residential mortgage-backed securities | Investment grade
Investment securities available-for-sale
Available-for-sale investment securities	55,975	62,393
Fair Value, Measurements, Recurring | Fair Value Measurements | Corporate debt securities | Investment grade
Investment securities available-for-sale
Available-for-sale investment securities	416,864	364,713
Fair Value, Measurements, Recurring | Fair Value Measurements | Corporate debt securities | Non-investment grade
Investment securities available-for-sale
Available-for-sale investment securities	8,408	9,642
Fair Value, Measurements, Recurring | Fair Value Measurements | Other securities
Investment securities available-for-sale
Available-for-sale investment securities	$ 45,428	$ 44,407

FAIR VALUE MEASUREMENT AND FA38

FAIR VALUE MEASUREMENT AND FAIR VALUE OF FINANCIAL INSTRUMENTS (Details 2) - Fair Value, Measurements, Recurring - Fair Value Measurements (Level 3) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2015
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	$ (3,412)	$ (3,392)
Total gains (losses) for the period:
Included in earnings	0	(20)
Sales and settlements:
Settlements	3,412	3,412
Ending balance	0	0
Change in unrealized losses included in earnings relating to assets and liabilities held for the period	0	0
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	0	6,528
Total gains (losses) for the period:
Included in earnings	0	960
Included in other comprehensive income	0	922
Sales and settlements:
Sales	0	(7,219)
Settlements	0	(98)
Transfers in and/or out of Level 3	0	(1,093)
Ending balance	0	0
Change in unrealized losses included in earnings relating to assets and liabilities held for the period	$ 0	$ 0

FAIR VALUE MEASUREMENT AND FA39

FAIR VALUE MEASUREMENT AND FAIR VALUE OF FINANCIAL INSTRUMENTS (Details 3) - Fair Value, Measurements, Nonrecurring - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Fair Value, Assets Measured on a Nonrecurring Basis
Loans held for sale	$ 27,895	$ 29,238
Significant Other Observable Inputs (Level 2)
Fair Value, Assets Measured on a Nonrecurring Basis
Loans held for sale	27,895	29,238
Non-PCI impaired loans | Loans Receivable
Fair Value, Assets Measured on a Nonrecurring Basis
Non-PCI impaired loans	89,293	70,462
Non-PCI impaired loans | Loans Receivable | Significant Unobservable Inputs (Level 3)
Fair Value, Assets Measured on a Nonrecurring Basis
Non-PCI impaired loans	89,293	70,462
Non-PCI impaired loans | Loans Receivable | CRE
Fair Value, Assets Measured on a Nonrecurring Basis
Non-PCI impaired loans	21,443	17,252
Non-PCI impaired loans | Loans Receivable | CRE | Significant Unobservable Inputs (Level 3)
Fair Value, Assets Measured on a Nonrecurring Basis
Non-PCI impaired loans	21,443	17,252
Non-PCI impaired loans | Loans Receivable | C&I
Fair Value, Assets Measured on a Nonrecurring Basis
Non-PCI impaired loans	50,362	35,558
Non-PCI impaired loans | Loans Receivable | C&I | Significant Unobservable Inputs (Level 3)
Fair Value, Assets Measured on a Nonrecurring Basis
Non-PCI impaired loans	50,362	35,558
Non-PCI impaired loans | Loans Receivable | Residential
Fair Value, Assets Measured on a Nonrecurring Basis
Non-PCI impaired loans	15,957	16,472
Non-PCI impaired loans | Loans Receivable | Residential | Significant Unobservable Inputs (Level 3)
Fair Value, Assets Measured on a Nonrecurring Basis
Non-PCI impaired loans	15,957	16,472
Non-PCI impaired loans | Loans Receivable | Consumer
Fair Value, Assets Measured on a Nonrecurring Basis
Non-PCI impaired loans	1,531	1,180
Non-PCI impaired loans | Loans Receivable | Consumer | Significant Unobservable Inputs (Level 3)
Fair Value, Assets Measured on a Nonrecurring Basis
Non-PCI impaired loans	1,531	1,180
OREO
Fair Value, Assets Measured on a Nonrecurring Basis
OREO	3,647	4,929
OREO | Significant Unobservable Inputs (Level 3)
Fair Value, Assets Measured on a Nonrecurring Basis
OREO	$ 3,647	$ 4,929

FAIR VALUE MEASUREMENT AND FA40

FAIR VALUE MEASUREMENT AND FAIR VALUE OF FINANCIAL INSTRUMENTS (Details 4) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Loans held for sale
Fair Value, Assets Measured on a Nonrecurring Basis
Increase (decrease) in value of assets	$ 0	$ 517,000	$ 2,400,000	$ 517,000
Fair Value, Measurements, Nonrecurring | OREO
Fair Value, Assets Measured on a Nonrecurring Basis
Increase (decrease) in value of assets	(1,073,000)	(200,000)	(1,529,000)	(258,000)
Fair Value, Measurements, Nonrecurring | Loans held for sale
Fair Value, Assets Measured on a Nonrecurring Basis
Increase (decrease) in value of assets	0	(517,000)	(2,351,000)	(517,000)
Fair Value, Measurements, Nonrecurring | Loans Receivable | Non-PCI impaired loans
Fair Value, Assets Measured on a Nonrecurring Basis
Increase (decrease) in value of assets	(4,960,000)	(7,116,000)	(7,200,000)	(10,550,000)
Fair Value, Measurements, Nonrecurring | Loans Receivable | Non-PCI impaired loans | CRE
Fair Value, Assets Measured on a Nonrecurring Basis
Increase (decrease) in value of assets	(261,000)	(445,000)	1,908,000	(905,000)
Fair Value, Measurements, Nonrecurring | Loans Receivable | Non-PCI impaired loans | C&I
Fair Value, Assets Measured on a Nonrecurring Basis
Increase (decrease) in value of assets	(4,693,000)	(6,454,000)	(9,149,000)	(9,303,000)
Fair Value, Measurements, Nonrecurring | Loans Receivable | Non-PCI impaired loans | Residential
Fair Value, Assets Measured on a Nonrecurring Basis
Increase (decrease) in value of assets	(4,000)	(216,000)	27,000	(341,000)
Fair Value, Measurements, Nonrecurring | Loans Receivable | Non-PCI impaired loans | Consumer
Fair Value, Assets Measured on a Nonrecurring Basis
Increase (decrease) in value of assets	$ (2,000)	$ (1,000)	$ 14,000	$ (1,000)

FAIR VALUE MEASUREMENT AND FA41

FAIR VALUE MEASUREMENT AND FAIR VALUE OF FINANCIAL INSTRUMENTS (Details 5) - Fair Value, Measurements, Nonrecurring - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2016	Dec. 31, 2015
OREO
Quantitative information
OREO	$ 3,647	$ 4,929
Loans Receivable | Non-PCI impaired loans
Quantitative information
Non-PCI impaired loans	89,293	70,462
Significant Unobservable Inputs (Level 3) | OREO
Quantitative information
OREO	3,647	4,929
Significant Unobservable Inputs (Level 3) | OREO | Appraisal
Quantitative information
OREO	$ 3,647	$ 4,929
Selling cost (as a percent)	8.00%	8.00%
Significant Unobservable Inputs (Level 3) | OREO | Appraisal | Weighted Average
Quantitative information
Selling cost (as a percent)	8.00%	8.00%
Significant Unobservable Inputs (Level 3) | Loans Receivable | Non-PCI impaired loans
Quantitative information
Non-PCI impaired loans	$ 89,293	$ 70,462
Significant Unobservable Inputs (Level 3) | Loans Receivable | Non-PCI impaired loans | Discounted cash flow
Quantitative information
Non-PCI impaired loans	$ 48,169	$ 27,522
Significant Unobservable Inputs (Level 3) | Loans Receivable | Non-PCI impaired loans | Discounted cash flow | Minimum
Quantitative information
Discount rate (as a percent)	0.00%	0.00%
Significant Unobservable Inputs (Level 3) | Loans Receivable | Non-PCI impaired loans | Discounted cash flow | Maximum
Quantitative information
Discount rate (as a percent)	84.00%	87.00%
Significant Unobservable Inputs (Level 3) | Loans Receivable | Non-PCI impaired loans | Discounted cash flow | Weighted Average
Quantitative information
Discount rate (as a percent)	20.00%	30.00%
Significant Unobservable Inputs (Level 3) | Loans Receivable | Non-PCI impaired loans | Market comparables
Quantitative information
Non-PCI impaired loans	$ 41,124	$ 42,940
Significant Unobservable Inputs (Level 3) | Loans Receivable | Non-PCI impaired loans | Market comparables | Minimum
Quantitative information
Discount rate (as a percent)	0.00%	0.00%
Significant Unobservable Inputs (Level 3) | Loans Receivable | Non-PCI impaired loans | Market comparables | Maximum
Quantitative information
Discount rate (as a percent)	100.00%	100.00%
Significant Unobservable Inputs (Level 3) | Loans Receivable | Non-PCI impaired loans | Market comparables | Weighted Average
Quantitative information
Discount rate (as a percent)	18.00%	17.00%

FAIR VALUE MEASUREMENT AND FA42

FAIR VALUE MEASUREMENT AND FAIR VALUE OF FINANCIAL INSTRUMENTS (Details 6) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015	Dec. 31, 2014
Financial assets:
Cash and cash equivalents	$ 1,592,796	$ 1,360,887	$ 1,877,914	$ 1,039,885
Short-term investments	229,979	299,916
Resale agreements	1,850,000	1,600,000
Held-to-maturity investment security	159,208	0
Loans held for sale	51,290	31,958
Loans receivable, net	23,969,599	23,378,789
Investment in FHLB stock	18,158	28,770
Investment in Federal Reserve Bank stock	55,216	54,932
Customer deposit accounts:
Short-term borrowings	29,499	0
FHLB advances	320,526	1,019,424
Repurchase agreements	200,000	0
Long-term debt	196,204	206,084
Carrying amount of repurchase agreements eligible for netting against resale agreements	250,000	450,000
Gross repurchase agreements	450,000	450,000
Carrying Amount
Financial assets:
Cash and cash equivalents	1,592,796	1,360,887
Short-term investments	229,979	299,916
Resale agreements	1,850,000	1,600,000
Held-to-maturity investment security	159,208
Loans held for sale	51,290	31,958
Loans receivable, net	23,969,599	23,378,789
Investment in FHLB stock	18,158	28,770
Investment in Federal Reserve Bank stock	55,216	54,932
Accrued interest receivable	86,503	89,243
Customer deposit accounts:
Demand, savings and money market deposits	22,484,884	20,859,086
Time deposits	5,732,359	6,616,895
Short-term borrowings	29,499
FHLB advances	320,526	1,019,424
Repurchase agreements	200,000
Accrued interest payable	8,053	8,848
Long-term debt	196,204	206,084
Fair Value Measurements
Financial assets:
Cash and cash equivalents	1,592,796	1,360,887
Short-term investments	229,979	299,916
Resale agreements	1,850,427	1,533,961
Held-to-maturity investment security	158,279
Loans held for sale	51,290	31,958
Loans receivable, net	23,928,765	23,000,817
Investment in FHLB stock	18,158	28,770
Investment in Federal Reserve Bank stock	55,216	54,932
Accrued interest receivable	86,503	89,243
Customer deposit accounts:
Demand, savings and money market deposits	22,484,884	20,859,086
Time deposits	5,736,110	6,606,942
Short-term borrowings	29,499
FHLB advances	332,595	1,032,000
Repurchase agreements	268,353
Accrued interest payable	8,053	8,848
Long-term debt	196,826	186,593
Fair Value Measurements | Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial assets:
Cash and cash equivalents	1,592,796	1,360,887
Fair Value Measurements | Significant Other Observable Inputs (Level 2)
Financial assets:
Short-term investments	229,979	299,916
Resale agreements	1,850,427	1,533,961
Loans held for sale	51,290	31,958
Investment in FHLB stock	18,158	28,770
Investment in Federal Reserve Bank stock	55,216	54,932
Accrued interest receivable	86,503	89,243
Customer deposit accounts:
Demand, savings and money market deposits	22,484,884	20,859,086
Time deposits	5,736,110	6,606,942
Short-term borrowings	29,499
FHLB advances	332,595	1,032,000
Repurchase agreements	268,353
Accrued interest payable	8,053	8,848
Long-term debt	196,826	186,593
Fair Value Measurements | Significant Unobservable Inputs (Level 3)
Financial assets:
Held-to-maturity investment security	158,279
Loans receivable, net	$ 23,928,765	$ 23,000,817

FAIR VALUE MEASUREMENT AND FA43

FAIR VALUE MEASUREMENT AND FAIR VALUE OF FINANCIAL INSTRUMENTS (Details 7)	6 Months Ended
	Jun. 30, 2016
Loans Receivable | Non-PCI Loans
Fair Values of Financial Assets
Period for updated appraisals and evaluations of impaired loans	12 months

SECURITIES PURCHASED UNDER RE44

SECURITIES PURCHASED UNDER RESALE AGREEMENTS AND SOLD UNDER REPURCHASE AGREEMENTS (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Resale agreements
Gross resale agreements	$ 2,100,000	$ 2,050,000
Weighted average interest rates (as a percent)	1.73%	1.61%
Repurchase agreements
Gross repurchase agreements	$ 450,000	$ 450,000
Weighted average interest rates (as a percent)	2.90%	2.60%

SECURITIES PURCHASED UNDER RE45

SECURITIES PURCHASED UNDER RESALE AGREEMENTS AND SOLD UNDER REPURCHASE AGREEMENTS (Details 2) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Assets, Resale Agreements
Gross Amounts of Recognized Assets	$ 2,100,000	$ 2,050,000
Gross Amounts Offset on the Consolidated Balance Sheets	(250,000)	(450,000)
Net Amounts of Assets Presented on the Consolidated Balance Sheets	1,850,000	1,600,000
Gross Amounts Not Offset on the Consolidated Balance Sheets
Financial Instruments	0	0
Collateral Received	(1,849,189)	(1,593,503)
Net Amount	811	6,497
Liabilities, Repurchase Agreements
Gross Amounts of Recognized Liabilities	450,000	450,000
Gross Amounts Offset on the Consolidated Balance Sheets	(250,000)	(450,000)
Net Amounts of Liabilities Presented on the Consolidated Balance Sheets	200,000	0
Gross Amounts Not Offset on the Consolidated Balance Sheets
Financial Instruments	0	0
Collateral Posted	(200,000)	0
Net Amount	$ 0	$ 0

INVESTMENT SECURITIES (Details)

INVESTMENT SECURITIES (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Schedule of Available-for-sale Securities
Amortized Cost	$ 3,220,048	$ 3,783,829
Gross Unrealized Gains	26,645	11,744
Gross Unrealized Losses	(6,361)	(22,347)
Available-for-sale investment securities, at fair value	3,240,332	3,773,226
Schedule of Held-to-maturity Security
Amortized Cost	159,208	0
Fair Value	158,279
Investment Securities
Amortized Cost	3,379,256
Gross Unrealized Gains	26,645
Gross Unrealized Losses	(7,290)
Fair Value	3,398,611
U.S. Treasury securities
Schedule of Available-for-sale Securities
Amortized Cost	485,137	1,002,874
Gross Unrealized Gains	3,423	33
Gross Unrealized Losses	0	(4,392)
Available-for-sale investment securities, at fair value	488,560	998,515
U.S. government agency and U.S. government sponsored enterprise debt securities
Schedule of Available-for-sale Securities
Amortized Cost	701,085	771,288
Gross Unrealized Gains	3,035	555
Gross Unrealized Losses	(191)	(2,994)
Available-for-sale investment securities, at fair value	703,929	768,849
U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities - Commercial mortgage-backed securities
Schedule of Available-for-sale Securities
Amortized Cost	305,724	354,418
Gross Unrealized Gains	3,443	268
Gross Unrealized Losses	(803)	(3,024)
Available-for-sale investment securities, at fair value	308,364	351,662
U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities - Residential mortgage-backed securities
Schedule of Available-for-sale Securities
Amortized Cost	1,050,583	996,255
Gross Unrealized Gains	10,041	7,542
Gross Unrealized Losses	(1,723)	(6,401)
Available-for-sale investment securities, at fair value	1,058,901	997,396
Municipal securities
Schedule of Available-for-sale Securities
Amortized Cost	149,711	173,785
Gross Unrealized Gains	4,246	2,657
Gross Unrealized Losses	(54)	(793)
Available-for-sale investment securities, at fair value	153,903	175,649
Non-agency residential mortgage-backed securities | Investment grade
Schedule of Available-for-sale Securities
Amortized Cost	54,728	62,133
Gross Unrealized Gains	1,276	433
Gross Unrealized Losses	(29)	(173)
Available-for-sale investment securities, at fair value	55,975	62,393
Corporate debt securities | Investment grade
Schedule of Available-for-sale Securities
Amortized Cost	418,104	366,921
Gross Unrealized Gains	475	132
Gross Unrealized Losses	(1,715)	(2,340)
Available-for-sale investment securities, at fair value	416,864	364,713
Corporate debt securities | Non-investment grade
Schedule of Available-for-sale Securities
Amortized Cost	10,191	11,491
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(1,783)	(1,849)
Available-for-sale investment securities, at fair value	8,408	9,642
Other securities
Schedule of Available-for-sale Securities
Amortized Cost	44,785	44,664
Gross Unrealized Gains	706	124
Gross Unrealized Losses	(63)	(381)
Available-for-sale investment securities, at fair value	45,428	$ 44,407
Non-agency commercial mortgage-backed security
Schedule of Held-to-maturity Security
Amortized Cost	159,208
Gross Unrealized Gains	0
Gross Unrealized Losses	(929)
Fair Value	$ 158,279

INVESTMENT SECURITIES (Details

INVESTMENT SECURITIES (Details 2) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Fair Value
Less Than 12 Months	$ 596,906	$ 2,527,519
12 Months or More	162,182	228,733
Total	759,088	2,756,252
Gross Unrealized Losses
Less Than 12 Months	(2,377)	(16,075)
12 Months or More	(3,984)	(6,272)
Total	(6,361)	(22,347)
Fair Value
Less Than 12 Months	755,185
12 Months or More	162,182
Total	917,367
Gross Unrealized Losses
Less Than 12 Months	(3,306)
12 Months or More	(3,984)
Total	(7,290)
U.S. Treasury securities
Fair Value
Less Than 12 Months	0	907,400
12 Months or More	0	20,282
Total	0	927,682
Gross Unrealized Losses
Less Than 12 Months	0	(4,250)
12 Months or More	0	(142)
Total	0	(4,392)
US Government-sponsored Enterprises Debt Securities [Member]
Fair Value
Less Than 12 Months	85,210	541,385
12 Months or More	0	0
Total	85,210	541,385
Gross Unrealized Losses
Less Than 12 Months	(191)	(2,994)
12 Months or More	0	0
Total	(191)	(2,994)
U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities - Commercial mortgage-backed securities
Fair Value
Less Than 12 Months	50,477	252,340
12 Months or More	24,377	20,793
Total	74,854	273,133
Gross Unrealized Losses
Less Than 12 Months	(476)	(2,562)
12 Months or More	(327)	(462)
Total	(803)	(3,024)
U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities - Residential mortgage-backed securities
Fair Value
Less Than 12 Months	295,399	535,842
12 Months or More	26,327	58,315
Total	321,726	594,157
Gross Unrealized Losses
Less Than 12 Months	(1,097)	(4,530)
12 Months or More	(626)	(1,871)
Total	(1,723)	(6,401)
Municipal securities
Fair Value
Less Than 12 Months	4,398	48,495
12 Months or More	2,896	14,739
Total	7,294	63,234
Gross Unrealized Losses
Less Than 12 Months	(50)	(437)
12 Months or More	(4)	(356)
Total	(54)	(793)
Non-agency residential mortgage-backed securities | Investment grade
Fair Value
Less Than 12 Months	7,470	5,123
12 Months or More	0	6,242
Total	7,470	11,365
Gross Unrealized Losses
Less Than 12 Months	(29)	(1)
12 Months or More	0	(172)
Total	(29)	(173)
Corporate debt securities | Investment grade
Fair Value
Less Than 12 Months	149,452	218,944
12 Months or More	91,236	89,989
Total	240,688	308,933
Gross Unrealized Losses
Less Than 12 Months	(533)	(1,189)
12 Months or More	(1,182)	(1,151)
Total	(1,715)	(2,340)
Corporate debt securities | Non-investment grade
Fair Value
Less Than 12 Months	0	0
12 Months or More	8,408	9,642
Total	8,408	9,642
Gross Unrealized Losses
Less Than 12 Months	0	0
12 Months or More	(1,783)	(1,849)
Total	(1,783)	(1,849)
Other securities
Fair Value
Less Than 12 Months	4,500	17,990
12 Months or More	8,938	8,731
Total	13,438	26,721
Gross Unrealized Losses
Less Than 12 Months	(1)	(112)
12 Months or More	(62)	(269)
Total	(63)	$ (381)
Non-agency commercial mortgage-backed security
Fair Value
Less Than 12 Months	158,279
12 Months or More	0
Total	158,279
Gross Unrealized Losses
Less Than 12 Months	(929)
12 Months or More	0
Total	$ (929)

INVESTMENT SECURITIES (Detail48

INVESTMENT SECURITIES (Details 3) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Gross realized gains
Gross realized gains	$ 2,836,000	$ 5,554,000	$ 6,803,000	$ 9,958,000
Corporate debt securities | Non-investment grade
Gross realized gains
Gross realized gains				960,000
Investment securities available-for-sale
Other Than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]
Beginning balance	0	106,688,000	0	112,338,000
Addition of OTTI previously not recognized	0	0	0	0
Additional increase to the amount related to the credit loss for which an OTTI was previously recognized	0	0	0	0
Reduction for securities sold	0	0	0	(5,650,000)
Ending balance	$ 0	$ 106,688,000	$ 0	$ 106,688,000

INVESTMENT SECURITIES (Detail49

INVESTMENT SECURITIES (Details 4) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Investments, Debt and Equity Securities [Abstract]
Proceeds from sales	$ 211,990	$ 292,561	$ 864,743	$ 473,062
Gross realized gains	2,836	5,554	6,803	9,958
Gross realized losses	0	0	125	0
Related tax expense	$ 1,192	$ 2,333	$ 2,808	$ 4,182

INVESTMENT SECURITIES (Detail50

INVESTMENT SECURITIES (Details 5) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Amortized Cost
Due within one year	$ 854,642
Due after one year through five years	625,607
Due after five years through ten years	350,091
Due after ten years	1,389,708
Total available-for-sale investment securities	3,220,048
Estimated Fair Value
Due within one year	854,787
Due after one year through five years	633,105
Due after five years through ten years	352,152
Due after ten years	1,400,288
Total available-for-sale investment securities	3,240,332	$ 3,773,226
Amortized Cost
Due after ten years	159,208
Estimated Fair Value
Due after ten years	158,279
Fair value of available-for-sale investment securities pledged	$ 1,060,000	$ 873,000

DERIVATIVES (Details)

DERIVATIVES (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Derivatives designated as hedging instruments
Fair Values of Derivative Instruments
Notional Amount	$ 133,816	$ 199,503
Derivative Assets	1,732	2,365
Derivative Liabilities	810	5,213
Derivatives designated as hedging instruments | Interest rate swaps on certificates of deposit
Fair Values of Derivative Instruments
Notional Amount	48,365	112,913
Derivative Assets	0	0
Derivative Liabilities	810	5,213
Derivatives designated as hedging instruments | Foreign currency forward contracts
Fair Values of Derivative Instruments
Notional Amount	85,451	86,590
Derivative Assets	1,732	2,365
Derivative Liabilities	0	0
Derivatives not designated as hedging instruments
Fair Values of Derivative Instruments
Notional Amount	7,899,344	7,190,926
Derivative Assets	167,113	77,469
Derivative Liabilities	168,422	76,679
Derivatives not designated as hedging instruments | Interest rate swaps and options
Fair Values of Derivative Instruments
Notional Amount	7,069,886	6,494,900
Derivative Assets	157,035	67,215
Derivative Liabilities	159,776	67,325
Derivatives not designated as hedging instruments | Foreign exchange contracts
Fair Values of Derivative Instruments
Notional Amount	782,104	652,993
Derivative Assets	10,078	10,254
Derivative Liabilities	8,634	9,350
Derivatives not designated as hedging instruments | Credit risk participation agreements (“RPAs”)
Fair Values of Derivative Instruments
Notional Amount	47,354	43,033
Derivative Assets	0	0
Derivative Liabilities	$ 12	$ 4

DERIVATIVES (Details 2)

DERIVATIVES (Details 2) - USD ($)	3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2016	Dec. 31, 2015
Credit Risk-Related Contingent Feature
Additional collateral required if credit rating is downgraded below investment grade			$ 0
Derivatives designated as hedging instruments
Derivative [Line Items]
Notional Amount	$ 133,816,000	$ 133,816,000	199,503,000
Derivative liabilities	810,000	810,000	5,213,000
Derivative assets	1,732,000	1,732,000	2,365,000
Derivatives designated as hedging instruments | Interest rate swaps on certificates of deposit
Derivative [Line Items]
Notional Amount	48,365,000	48,365,000	112,913,000
Derivative liabilities	810,000	810,000	5,213,000
(Decrease) in notional amount	(24,300,000)	(63,700,000)
Derivative assets	0	0	0
Derivatives not designated as hedging instruments
Derivative [Line Items]
Notional Amount	7,899,344,000	7,899,344,000	7,190,926,000
Derivative liabilities	168,422,000	168,422,000	76,679,000
Derivative assets	167,113,000	167,113,000	77,469,000
Derivatives not designated as hedging instruments | Interest rate swaps and options
Derivative [Line Items]
Notional Amount	7,069,886,000	7,069,886,000	6,494,900,000
Derivative liabilities	159,776,000	159,776,000	67,325,000
Notional amount of derivative assets	3,530,000,000	3,530,000,000	3,250,000,000
Notional amount of derivative liabilities	3,530,000,000	3,530,000,000	3,250,000,000
Derivative assets	157,035,000	157,035,000	67,215,000
Derivatives not designated as hedging instruments | Foreign exchange contracts
Derivative [Line Items]
Notional Amount	782,100,000	782,100,000	653,000,000
Derivative liabilities	8,600,000	8,600,000	9,400,000
Derivative assets	10,100,000	10,100,000	10,300,000
Derivatives not designated as hedging instruments | Credit risk participation agreements (“RPAs”)
Derivative [Line Items]
Notional Amount	47,354,000	47,354,000	43,033,000
Derivative liabilities	12,000	12,000	4,000
Derivative assets	0	0	0
Interest rate derivative exposure	610,000	$ 610,000	$ 257,000
Weighted average remaining maturity (in years)		2 years 7 months	3 years 2 months
Derivatives not designated as hedging instruments | Credit risk participation agreements (“RPAs”) | Long
Derivative [Line Items]
Notional Amount	33,400,000	$ 33,400,000	$ 33,700,000
Derivatives not designated as hedging instruments | Credit risk participation agreements (“RPAs”) | Short
Derivative [Line Items]
Notional Amount	$ 14,000,000	$ 14,000,000	$ 9,300,000
Derivatives not designated as hedging instruments | Foreign exchange options
Derivative [Line Items]
Term of contract (in years)		5 years

DERIVATIVES (Details 3)

DERIVATIVES (Details 3) - Interest Expense - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Derivative [Line Items]
Net amount recognized on fair value hedges (ineffective portion)	$ 135	$ 3	$ 1,009	$ 356
Certificates of deposits
Derivative [Line Items]
Recognized on certificates of deposit	(7)	2,294	(3,362)	(401)
Interest rate swaps on certificates of deposit
Derivative [Line Items]
Recognized on interest rate swaps	$ 142	$ (2,291)	$ 4,371	$ 757

DERIVATIVES (Details 4)

DERIVATIVES (Details 4) - Derivatives designated as hedging instruments - Net investment hedges - Foreign currency forward contracts - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Derivative Instruments, Gain (Loss) [Line Items]
Gains recognized in AOCI on net investment hedges (effective portion)	$ 1,712	$ 0	$ 227	$ 0
Gains (losses) recognized in Foreign exchange income (ineffective portion)	$ 449	$ 0	$ (431)	$ 0

DERIVATIVES (Details 5)

DERIVATIVES (Details 5) - Derivatives not designated as hedging instruments - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Derivative Instruments, Gain (Loss) [Line Items]
Net gains (losses) recognized for not designated as hedging instruments	$ 1,149	$ 2,165	$ 5,635	$ 2,937
Interest rate swaps and options | Other fees and operating income
Derivative Instruments, Gain (Loss) [Line Items]
Net gains (losses) recognized for not designated as hedging instruments	(1,920)	1,215	(2,634)	621
Foreign exchange contracts | Foreign exchange income
Derivative Instruments, Gain (Loss) [Line Items]
Net gains (losses) recognized for not designated as hedging instruments	3,069	908	8,277	2,216
Credit risk participation agreements (“RPAs”) | Other fees and operating income
Derivative Instruments, Gain (Loss) [Line Items]
Net gains (losses) recognized for not designated as hedging instruments	0	0	(8)	0
Foreign exchange options | Foreign exchange income
Derivative Instruments, Gain (Loss) [Line Items]
Net gains (losses) recognized for not designated as hedging instruments	0	37	0	236
Embedded derivative liabilities | Other operating expense
Derivative Instruments, Gain (Loss) [Line Items]
Net gains (losses) recognized for not designated as hedging instruments	$ 0	$ 5	$ 0	$ (136)

DERIVATIVES (Details 6)

DERIVATIVES (Details 6) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Assets
Gross Derivative Assets Fair Value	$ 7,698	$ 8,733
Gross Amounts Offset on the Consolidated Balance Sheets	0	0
Derivative Assets Fair Value	7,698	8,733
Gross Amounts Not Offset on the Consolidated Balance Sheets
Financial Instruments	(7,024)	(5,293)
Collateral Received	(553)	(3,068)
Net Amount	121	372
Cash collateral received	553	3,100
Liabilities
Gross Derivative Liabilities Fair Value	166,395	78,779
Gross Amounts Offset on the Consolidated Balance Sheets	0	0
Derivative Liabilities Fair Value	166,395	78,779
Gross Amounts Not Offset on the Consolidated Balance Sheets
Financial Instruments	(7,024)	(5,293)
Collateral Posted	(159,015)	(73,109)
Net Amount	356	377
Cash collateral posted	$ 52,000	$ 21,100

LOANS RECEIVABLE AND ALLOWANC57

LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Allowance for loan losses	$ (266,768)		$ (264,959)
Loans, net	23,969,599		23,378,789
CRE
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Allowance for loan losses	(78,345)		(81,538)
C&I
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Allowance for loan losses	(148,435)		(134,606)
Residential
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Allowance for loan losses	(31,567)		(39,295)
Consumer
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Allowance for loan losses	(8,421)		(9,520)
Loans Receivable
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	24,236,216		23,659,761
Unearned fees, premiums, and discounts, net	151		(16,013)
Allowance for loan losses	(266,768)	$ (260,238)	(264,959)	$ (261,229)	$ (257,738)	$ (261,679)
Loans, net	23,969,599		23,378,789
Loans Receivable | CRE
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	8,476,682		8,110,749
Loans Receivable | CRE | Income producing
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	7,812,733		7,478,474
Loans Receivable | CRE | Construction
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	522,967		438,671
Loans Receivable | CRE | Land
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	140,982		193,604
Loans Receivable | C&I
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	9,163,804		9,003,007
Loans Receivable | C&I | Commercial business
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	8,449,136		8,213,897
Loans Receivable | C&I | Trade finance
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	714,668		789,110
Loans Receivable | Residential
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	4,532,300		4,589,914
Loans Receivable | Residential | Single-family
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	3,186,031		3,066,919
Loans Receivable | Residential | Multifamily
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	1,346,269		1,522,995
Loans Receivable | Consumer
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	2,063,430		1,956,091
Loans Receivable | Non-PCI Loans
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	23,442,173		22,689,007
Unearned fees, premiums, and discounts, net	151		(16,013)
Allowance for loan losses	(266,511)	(259,910)	(264,600)	(260,617)	(257,095)	(260,965)
Loans, net	23,175,813		22,408,394
Loans Receivable | Non-PCI Loans | CRE
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	8,025,630		7,561,384
Allowance for loan losses	(78,102)	(82,538)	(81,191)	(75,496)	(69,740)	(72,263)
Loans Receivable | Non-PCI Loans | CRE | Income producing
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	7,364,321		6,937,199
Loans Receivable | Non-PCI Loans | CRE | Construction
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	522,967		436,776
Loans Receivable | Non-PCI Loans | CRE | Land
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	138,342		187,409
Loans Receivable | Non-PCI Loans | C&I
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	9,117,182		8,943,791
Allowance for loan losses	(148,427)	(134,077)	(134,597)	(133,962)	(133,914)	(134,598)
Loans Receivable | Non-PCI Loans | C&I | Commercial business
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	8,402,526		8,155,991
Loans Receivable | Non-PCI Loans | C&I | Trade finance
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	714,656		787,800
Loans Receivable | Non-PCI Loans | Residential
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	4,257,575		4,252,004
Allowance for loan losses	(31,561)	(33,935)	(39,292)	(40,668)	(42,990)	(43,856)
Loans Receivable | Non-PCI Loans | Residential | Single-family
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	3,027,217		2,877,286
Loans Receivable | Non-PCI Loans | Residential | Multifamily
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	1,230,358		1,374,718
Loans Receivable | Non-PCI Loans | Consumer
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	2,041,786		1,931,828
Allowance for loan losses	(8,421)	$ (9,360)	(9,520)	$ (10,491)	$ (10,451)	$ (10,248)
Loans Receivable | PCI Loans
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	794,043		970,754
Allowance for loan losses	(257)		(359)
Loans, net	793,786		970,395
Loans Receivable | PCI Loans | CRE
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	451,052		549,365
Loans Receivable | PCI Loans | CRE | Income producing
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	448,412		541,275
Loans Receivable | PCI Loans | CRE | Construction
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	0		1,895
Loans Receivable | PCI Loans | CRE | Land
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	2,640		6,195
Loans Receivable | PCI Loans | C&I
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	46,622		59,216
Loans Receivable | PCI Loans | C&I | Commercial business
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	46,610		57,906
Loans Receivable | PCI Loans | C&I | Trade finance
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	12		1,310
Loans Receivable | PCI Loans | Residential
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	274,725		337,910
Loans Receivable | PCI Loans | Residential | Single-family
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	158,814		189,633
Loans Receivable | PCI Loans | Residential | Multifamily
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	115,911		148,277
Loans Receivable | PCI Loans | Consumer
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Total loans	$ 21,644		$ 24,263

LOANS RECEIVABLE AND ALLOWANC58

LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES (Details 2) - Loans Receivable $ in Millions	6 Months Ended
	Jun. 30, 2016USD ($)property_unit	Dec. 31, 2015USD ($)
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 | $	$ 16,050	$ 15,910
Residential | Single-family
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Adjustable rate mortgage, term of initial fixed interest rates, option one	1 year
Adjustable rate mortgage, term of initial fixed interest rates, option two	3 years
Adjustable rate mortgage, term of initial fixed interest rates, option three	5 years
Residential | Single-family | Minimum
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Number of units in residential properties securing fixed and adjustable rate first mortgage loans	1
Residential | Single-family | Maximum
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Number of units in residential properties securing fixed and adjustable rate first mortgage loans	4
Residential | Multifamily
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Adjustable rate mortgage, term of initial fixed interest rates, option one	6 months
Adjustable rate mortgage, term of initial fixed interest rates, option two	3 years

LOANS RECEIVABLE AND ALLOWANC59

LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES (Details 3) - Loans Receivable - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 24,236,216	$ 23,659,761
CRE
Financing Receivable, Recorded Investment [Line Items]
Total loans	8,476,682	8,110,749
CRE | Income producing
Financing Receivable, Recorded Investment [Line Items]
Total loans	7,812,733	7,478,474
CRE | Construction
Financing Receivable, Recorded Investment [Line Items]
Total loans	522,967	438,671
CRE | Land
Financing Receivable, Recorded Investment [Line Items]
Total loans	140,982	193,604
C&I
Financing Receivable, Recorded Investment [Line Items]
Total loans	9,163,804	9,003,007
C&I | Commercial business
Financing Receivable, Recorded Investment [Line Items]
Total loans	8,449,136	8,213,897
C&I | Trade finance
Financing Receivable, Recorded Investment [Line Items]
Total loans	714,668	789,110
Residential
Financing Receivable, Recorded Investment [Line Items]
Total loans	4,532,300	4,589,914
Residential | Single-family
Financing Receivable, Recorded Investment [Line Items]
Total loans	3,186,031	3,066,919
Residential | Multifamily
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,346,269	1,522,995
Consumer
Financing Receivable, Recorded Investment [Line Items]
Total loans	2,063,430	1,956,091
Non-PCI Loans
Financing Receivable, Recorded Investment [Line Items]
Total loans	23,442,173	22,689,007
Non-PCI Loans | Pass/Watch
Financing Receivable, Recorded Investment [Line Items]
Total loans	22,629,016	21,910,821
Non-PCI Loans | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	206,976	287,530
Non-PCI Loans | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	571,578	466,129
Non-PCI Loans | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	34,603	24,527
Non-PCI Loans | CRE
Financing Receivable, Recorded Investment [Line Items]
Total loans	8,025,630	7,561,384
Non-PCI Loans | CRE | Income producing
Financing Receivable, Recorded Investment [Line Items]
Total loans	7,364,321	6,937,199
Non-PCI Loans | CRE | Income producing | Pass/Watch
Financing Receivable, Recorded Investment [Line Items]
Total loans	7,086,172	6,672,951
Non-PCI Loans | CRE | Income producing | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	51,802	59,309
Non-PCI Loans | CRE | Income producing | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	226,347	204,939
Non-PCI Loans | CRE | Income producing | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Non-PCI Loans | CRE | Construction
Financing Receivable, Recorded Investment [Line Items]
Total loans	522,967	436,776
Non-PCI Loans | CRE | Construction | Pass/Watch
Financing Receivable, Recorded Investment [Line Items]
Total loans	519,345	435,112
Non-PCI Loans | CRE | Construction | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	3,622	1,194
Non-PCI Loans | CRE | Construction | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	470
Non-PCI Loans | CRE | Construction | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Non-PCI Loans | CRE | Land
Financing Receivable, Recorded Investment [Line Items]
Total loans	138,342	187,409
Non-PCI Loans | CRE | Land | Pass/Watch
Financing Receivable, Recorded Investment [Line Items]
Total loans	124,379	172,189
Non-PCI Loans | CRE | Land | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Non-PCI Loans | CRE | Land | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	13,953	15,220
Non-PCI Loans | CRE | Land | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	10	0
Non-PCI Loans | C&I
Financing Receivable, Recorded Investment [Line Items]
Total loans	9,117,182	8,943,791
Non-PCI Loans | C&I | Commercial business
Financing Receivable, Recorded Investment [Line Items]
Total loans	8,402,526	8,155,991
Non-PCI Loans | C&I | Commercial business | Pass/Watch
Financing Receivable, Recorded Investment [Line Items]
Total loans	7,998,058	7,794,735
Non-PCI Loans | C&I | Commercial business | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	139,189	201,280
Non-PCI Loans | C&I | Commercial business | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	234,391	135,449
Non-PCI Loans | C&I | Commercial business | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	30,888	24,527
Non-PCI Loans | C&I | Trade finance
Financing Receivable, Recorded Investment [Line Items]
Total loans	714,656	787,800
Non-PCI Loans | C&I | Trade finance | Pass/Watch
Financing Receivable, Recorded Investment [Line Items]
Total loans	688,080	750,144
Non-PCI Loans | C&I | Trade finance | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,600	13,812
Non-PCI Loans | C&I | Trade finance | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	21,271	23,844
Non-PCI Loans | C&I | Trade finance | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	3,705	0
Non-PCI Loans | Residential
Financing Receivable, Recorded Investment [Line Items]
Total loans	4,257,575	4,252,004
Non-PCI Loans | Residential | Single-family
Financing Receivable, Recorded Investment [Line Items]
Total loans	3,027,217	2,877,286
Non-PCI Loans | Residential | Single-family | Pass/Watch
Financing Receivable, Recorded Investment [Line Items]
Total loans	3,002,316	2,841,722
Non-PCI Loans | Residential | Single-family | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	7,035	8,134
Non-PCI Loans | Residential | Single-family | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	17,866	27,430
Non-PCI Loans | Residential | Single-family | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Non-PCI Loans | Residential | Multifamily
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,230,358	1,374,718
Non-PCI Loans | Residential | Multifamily | Pass/Watch
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,177,818	1,317,550
Non-PCI Loans | Residential | Multifamily | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	2,918
Non-PCI Loans | Residential | Multifamily | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	52,540	54,250
Non-PCI Loans | Residential | Multifamily | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Non-PCI Loans | Consumer
Financing Receivable, Recorded Investment [Line Items]
Total loans	2,041,786	1,931,828
Non-PCI Loans | Consumer | Pass/Watch
Financing Receivable, Recorded Investment [Line Items]
Total loans	2,032,848	1,926,418
Non-PCI Loans | Consumer | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	3,728	883
Non-PCI Loans | Consumer | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	5,210	4,527
Non-PCI Loans | Consumer | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
PCI Loans
Financing Receivable, Recorded Investment [Line Items]
Total loans	794,043	970,754
PCI Loans | Pass/Watch
Financing Receivable, Recorded Investment [Line Items]
Total loans	679,106	835,890
PCI Loans | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	17,193	7,551
PCI Loans | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	97,744	127,313
PCI Loans | CRE
Financing Receivable, Recorded Investment [Line Items]
Total loans	451,052	549,365
PCI Loans | CRE | Income producing
Financing Receivable, Recorded Investment [Line Items]
Total loans	448,412	541,275
PCI Loans | CRE | Income producing | Pass/Watch
Financing Receivable, Recorded Investment [Line Items]
Total loans	363,469	440,100
PCI Loans | CRE | Income producing | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	10,866	4,987
PCI Loans | CRE | Income producing | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	74,077	96,188
PCI Loans | CRE | Construction
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	1,895
PCI Loans | CRE | Construction | Pass/Watch
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
PCI Loans | CRE | Construction | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
PCI Loans | CRE | Construction | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	1,895
PCI Loans | CRE | Land
Financing Receivable, Recorded Investment [Line Items]
Total loans	2,640	6,195
PCI Loans | CRE | Land | Pass/Watch
Financing Receivable, Recorded Investment [Line Items]
Total loans	2,248	4,285
PCI Loans | CRE | Land | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
PCI Loans | CRE | Land | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	392	1,910
PCI Loans | C&I
Financing Receivable, Recorded Investment [Line Items]
Total loans	46,622	59,216
PCI Loans | C&I | Commercial business
Financing Receivable, Recorded Investment [Line Items]
Total loans	46,610	57,906
PCI Loans | C&I | Commercial business | Pass/Watch
Financing Receivable, Recorded Investment [Line Items]
Total loans	37,284	52,212
PCI Loans | C&I | Commercial business | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	4,648	819
PCI Loans | C&I | Commercial business | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	4,678	4,875
PCI Loans | C&I | Trade finance
Financing Receivable, Recorded Investment [Line Items]
Total loans	12	1,310
PCI Loans | C&I | Trade finance | Pass/Watch
Financing Receivable, Recorded Investment [Line Items]
Total loans	12	1,310
PCI Loans | C&I | Trade finance | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
PCI Loans | C&I | Trade finance | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
PCI Loans | Residential
Financing Receivable, Recorded Investment [Line Items]
Total loans	274,725	337,910
PCI Loans | Residential | Single-family
Financing Receivable, Recorded Investment [Line Items]
Total loans	158,814	189,633
PCI Loans | Residential | Single-family | Pass/Watch
Financing Receivable, Recorded Investment [Line Items]
Total loans	155,941	184,092
PCI Loans | Residential | Single-family | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,227	1,293
PCI Loans | Residential | Single-family | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,646	4,248
PCI Loans | Residential | Multifamily
Financing Receivable, Recorded Investment [Line Items]
Total loans	115,911	148,277
PCI Loans | Residential | Multifamily | Pass/Watch
Financing Receivable, Recorded Investment [Line Items]
Total loans	99,886	130,770
PCI Loans | Residential | Multifamily | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
PCI Loans | Residential | Multifamily | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	16,025	17,507
PCI Loans | Consumer
Financing Receivable, Recorded Investment [Line Items]
Total loans	21,644	24,263
PCI Loans | Consumer | Pass/Watch
Financing Receivable, Recorded Investment [Line Items]
Total loans	20,266	23,121
PCI Loans | Consumer | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	452	452
PCI Loans | Consumer | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 926	$ 690

LOANS RECEIVABLE AND ALLOWANC60

LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES (Details 4) - Loans Receivable - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Dec. 31, 2015
Nonaccrual and Past Due Loans
Total loans	$ 24,236,216	$ 23,659,761
Number Of Days Beyond Loan Classified Nonaccrual	90 days
CRE
Nonaccrual and Past Due Loans
Total loans	$ 8,476,682	8,110,749
CRE | Income producing
Nonaccrual and Past Due Loans
Total loans	7,812,733	7,478,474
CRE | Construction
Nonaccrual and Past Due Loans
Total loans	522,967	438,671
CRE | Land
Nonaccrual and Past Due Loans
Total loans	140,982	193,604
C&I
Nonaccrual and Past Due Loans
Total loans	9,163,804	9,003,007
C&I | Commercial business
Nonaccrual and Past Due Loans
Total loans	8,449,136	8,213,897
C&I | Trade finance
Nonaccrual and Past Due Loans
Total loans	714,668	789,110
Residential
Nonaccrual and Past Due Loans
Total loans	4,532,300	4,589,914
Residential | Single-family
Nonaccrual and Past Due Loans
Total loans	3,186,031	3,066,919
Residential | Multifamily
Nonaccrual and Past Due Loans
Total loans	1,346,269	1,522,995
Consumer
Nonaccrual and Past Due Loans
Total loans	2,063,430	1,956,091
Non-PCI Loans
Nonaccrual and Past Due Loans
Total Accruing Past Due Loans	35,817	53,194
Total Nonaccrual Loans	171,580	121,369
Current Accruing Loans	23,234,776	22,514,444
Total loans	23,442,173	22,689,007
Non-PCI Loans | CRE
Nonaccrual and Past Due Loans
Total loans	8,025,630	7,561,384
Non-PCI Loans | CRE | Income producing
Nonaccrual and Past Due Loans
Total Accruing Past Due Loans	6,549	28,721
Total Nonaccrual Loans	59,250	29,229
Current Accruing Loans	7,298,522	6,879,249
Total loans	7,364,321	6,937,199
Non-PCI Loans | CRE | Construction
Nonaccrual and Past Due Loans
Total Accruing Past Due Loans	0	0
Total Nonaccrual Loans	0	14
Current Accruing Loans	522,967	436,762
Total loans	522,967	436,776
Non-PCI Loans | CRE | Land
Nonaccrual and Past Due Loans
Total Accruing Past Due Loans	3,970	1,124
Total Nonaccrual Loans	5,789	683
Current Accruing Loans	128,583	185,602
Total loans	138,342	187,409
Non-PCI Loans | C&I
Nonaccrual and Past Due Loans
Total loans	9,117,182	8,943,791
Non-PCI Loans | C&I | Commercial business
Nonaccrual and Past Due Loans
Total Accruing Past Due Loans	4,881	3,177
Total Nonaccrual Loans	73,927	64,735
Current Accruing Loans	8,323,718	8,088,079
Total loans	8,402,526	8,155,991
Non-PCI Loans | C&I | Trade finance
Nonaccrual and Past Due Loans
Total Accruing Past Due Loans	0	0
Total Nonaccrual Loans	8,439	0
Current Accruing Loans	706,217	787,800
Total loans	714,656	787,800
Non-PCI Loans | Residential
Nonaccrual and Past Due Loans
Total loans	4,257,575	4,252,004
Non-PCI Loans | Residential | Single-family
Nonaccrual and Past Due Loans
Total Accruing Past Due Loans	8,302	10,584
Total Nonaccrual Loans	5,117	8,726
Current Accruing Loans	3,013,798	2,857,976
Total loans	3,027,217	2,877,286
Non-PCI Loans | Residential | Multifamily
Nonaccrual and Past Due Loans
Total Accruing Past Due Loans	4,665	7,301
Total Nonaccrual Loans	17,319	16,244
Current Accruing Loans	1,208,374	1,351,173
Total loans	1,230,358	1,374,718
Non-PCI Loans | Consumer
Nonaccrual and Past Due Loans
Total Accruing Past Due Loans	7,450	2,287
Total Nonaccrual Loans	1,739	1,738
Current Accruing Loans	2,032,597	1,927,803
Total loans	2,041,786	1,931,828
Non-PCI Loans | Accruing Loans 30-59 Days Past Due
Nonaccrual and Past Due Loans
Total Accruing Past Due Loans	25,907	22,636
Non-PCI Loans | Accruing Loans 30-59 Days Past Due | CRE | Income producing
Nonaccrual and Past Due Loans
Total Accruing Past Due Loans	3,557	3,465
Non-PCI Loans | Accruing Loans 30-59 Days Past Due | CRE | Construction
Nonaccrual and Past Due Loans
Total Accruing Past Due Loans	0	0
Non-PCI Loans | Accruing Loans 30-59 Days Past Due | CRE | Land
Nonaccrual and Past Due Loans
Total Accruing Past Due Loans	3,340	1,124
Non-PCI Loans | Accruing Loans 30-59 Days Past Due | C&I | Commercial business
Nonaccrual and Past Due Loans
Total Accruing Past Due Loans	4,455	1,992
Non-PCI Loans | Accruing Loans 30-59 Days Past Due | C&I | Trade finance
Nonaccrual and Past Due Loans
Total Accruing Past Due Loans	0	0
Non-PCI Loans | Accruing Loans 30-59 Days Past Due | Residential | Single-family
Nonaccrual and Past Due Loans
Total Accruing Past Due Loans	5,038	7,657
Non-PCI Loans | Accruing Loans 30-59 Days Past Due | Residential | Multifamily
Nonaccrual and Past Due Loans
Total Accruing Past Due Loans	4,328	6,320
Non-PCI Loans | Accruing Loans 30-59 Days Past Due | Consumer
Nonaccrual and Past Due Loans
Total Accruing Past Due Loans	5,189	2,078
Non-PCI Loans | Accruing Loans 60-89 Days Past Due
Nonaccrual and Past Due Loans
Total Accruing Past Due Loans	9,910	30,558
Non-PCI Loans | Accruing Loans 60-89 Days Past Due | CRE | Income producing
Nonaccrual and Past Due Loans
Total Accruing Past Due Loans	2,992	25,256
Non-PCI Loans | Accruing Loans 60-89 Days Past Due | CRE | Construction
Nonaccrual and Past Due Loans
Total Accruing Past Due Loans	0	0
Non-PCI Loans | Accruing Loans 60-89 Days Past Due | CRE | Land
Nonaccrual and Past Due Loans
Total Accruing Past Due Loans	630	0
Non-PCI Loans | Accruing Loans 60-89 Days Past Due | C&I | Commercial business
Nonaccrual and Past Due Loans
Total Accruing Past Due Loans	426	1,185
Non-PCI Loans | Accruing Loans 60-89 Days Past Due | C&I | Trade finance
Nonaccrual and Past Due Loans
Total Accruing Past Due Loans	0	0
Non-PCI Loans | Accruing Loans 60-89 Days Past Due | Residential | Single-family
Nonaccrual and Past Due Loans
Total Accruing Past Due Loans	3,264	2,927
Non-PCI Loans | Accruing Loans 60-89 Days Past Due | Residential | Multifamily
Nonaccrual and Past Due Loans
Total Accruing Past Due Loans	337	981
Non-PCI Loans | Accruing Loans 60-89 Days Past Due | Consumer
Nonaccrual and Past Due Loans
Total Accruing Past Due Loans	2,261	209
Non-PCI Loans | Nonaccrual Loans Less Than 90 Days Past Due
Nonaccrual and Past Due Loans
Total Nonaccrual Loans	91,872	69,187
Non-PCI Loans | Nonaccrual Loans Less Than 90 Days Past Due | CRE | Income producing
Nonaccrual and Past Due Loans
Total Nonaccrual Loans	17,860	11,359
Non-PCI Loans | Nonaccrual Loans Less Than 90 Days Past Due | CRE | Construction
Nonaccrual and Past Due Loans
Total Nonaccrual Loans	0	14
Non-PCI Loans | Nonaccrual Loans Less Than 90 Days Past Due | CRE | Land
Nonaccrual and Past Due Loans
Total Nonaccrual Loans	5,779	277
Non-PCI Loans | Nonaccrual Loans Less Than 90 Days Past Due | C&I | Commercial business
Nonaccrual and Past Due Loans
Total Nonaccrual Loans	54,516	50,726
Non-PCI Loans | Nonaccrual Loans Less Than 90 Days Past Due | C&I | Trade finance
Nonaccrual and Past Due Loans
Total Nonaccrual Loans	4,734	0
Non-PCI Loans | Nonaccrual Loans Less Than 90 Days Past Due | Residential | Single-family
Nonaccrual and Past Due Loans
Total Nonaccrual Loans	2,378	92
Non-PCI Loans | Nonaccrual Loans Less Than 90 Days Past Due | Residential | Multifamily
Nonaccrual and Past Due Loans
Total Nonaccrual Loans	6,474	6,486
Non-PCI Loans | Nonaccrual Loans Less Than 90 Days Past Due | Consumer
Nonaccrual and Past Due Loans
Total Nonaccrual Loans	131	233
Non-PCI Loans | Nonaccrual Loans 90 or More Days Past Due
Nonaccrual and Past Due Loans
Total Nonaccrual Loans	79,708	52,182
Non-PCI Loans | Nonaccrual Loans 90 or More Days Past Due | CRE | Income producing
Nonaccrual and Past Due Loans
Total Nonaccrual Loans	41,390	17,870
Non-PCI Loans | Nonaccrual Loans 90 or More Days Past Due | CRE | Construction
Nonaccrual and Past Due Loans
Total Nonaccrual Loans	0	0
Non-PCI Loans | Nonaccrual Loans 90 or More Days Past Due | CRE | Land
Nonaccrual and Past Due Loans
Total Nonaccrual Loans	10	406
Non-PCI Loans | Nonaccrual Loans 90 or More Days Past Due | C&I | Commercial business
Nonaccrual and Past Due Loans
Total Nonaccrual Loans	19,411	14,009
Non-PCI Loans | Nonaccrual Loans 90 or More Days Past Due | C&I | Trade finance
Nonaccrual and Past Due Loans
Total Nonaccrual Loans	3,705	0
Non-PCI Loans | Nonaccrual Loans 90 or More Days Past Due | Residential | Single-family
Nonaccrual and Past Due Loans
Total Nonaccrual Loans	2,739	8,634
Non-PCI Loans | Nonaccrual Loans 90 or More Days Past Due | Residential | Multifamily
Nonaccrual and Past Due Loans
Total Nonaccrual Loans	10,845	9,758
Non-PCI Loans | Nonaccrual Loans 90 or More Days Past Due | Consumer
Nonaccrual and Past Due Loans
Total Nonaccrual Loans	$ 1,608	$ 1,505

LOANS RECEIVABLE AND ALLOWANC61

LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES (Details 5) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Loans in process of foreclosure
Other real estate owned, net	$ 4,900	$ 7,000
Residential real estate properties
Loans in process of foreclosure
Carrying amount of foreclosed residential real estate properties included in total net OREO		912
Residential
Loans in process of foreclosure
Recorded investment in consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings were in process	14,200	18,000
Loans Receivable | Acquired with deteriorated credit quality
Nonaccrual loans
Total Nonaccrual Loans	$ 31,400	$ 37,700

LOANS RECEIVABLE AND ALLOWANC62

LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES (Details 6) - Loans Receivable - Non-PCI Loans $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016USD ($)loan	Jun. 30, 2015USD ($)loan	Jun. 30, 2016USD ($)loan	Jun. 30, 2015USD ($)loan
Loans Modified as TDRs
Post-Modification Outstanding Recorded Investment	$ 8,299	$ 38,217	$ 47,581	$ 39,479
CRE
Loans Modified as TDRs
Post-Modification Outstanding Recorded Investment	$ 7,429	$ 100	$ 21,081	$ 918
CRE | Income producing
Loans Modified as TDRs
Number of Loans | loan	2	0	3	1
Pre-Modification Outstanding Recorded Investment	$ 2,152	$ 0	$ 15,899	$ 828
Post-Modification Outstanding Recorded Investment	2,150	0	15,802	818
Financial Impact	$ 43	$ 0	$ 43	$ 0
CRE | Land
Loans Modified as TDRs
Number of Loans | loan	1	1	1	1
Pre-Modification Outstanding Recorded Investment	$ 5,522	$ 171	$ 5,522	$ 171
Post-Modification Outstanding Recorded Investment	5,279	100	5,279	100
Financial Impact	0	102	0	102
C&I
Loans Modified as TDRs
Post-Modification Outstanding Recorded Investment	$ 75	$ 38,117	$ 25,098	$ 38,280
C&I | Commercial business
Loans Modified as TDRs
Number of Loans | loan	1	12	5	13
Pre-Modification Outstanding Recorded Investment	$ 75	$ 37,924	$ 21,689	$ 38,090
Post-Modification Outstanding Recorded Investment	75	38,117	15,842	38,280
Financial Impact	12	5,465	$ 2,618	$ 5,497
C&I | Trade finance
Loans Modified as TDRs
Number of Loans | loan			2	0
Pre-Modification Outstanding Recorded Investment			$ 7,901	$ 0
Post-Modification Outstanding Recorded Investment			9,256	0
Financial Impact			0	0
Residential
Loans Modified as TDRs
Post-Modification Outstanding Recorded Investment	$ 795	$ 0	$ 1,064	$ 281
Residential | Single-family
Loans Modified as TDRs
Number of Loans | loan	1	0	2	1
Pre-Modification Outstanding Recorded Investment	$ 795	$ 0	$ 1,071	$ 281
Post-Modification Outstanding Recorded Investment	795	0	1,064	281
Financial Impact	$ 0	$ 0	$ 0	$ 2
Consumer
Loans Modified as TDRs
Number of Loans | loan			1	0
Pre-Modification Outstanding Recorded Investment			$ 344	$ 0
Post-Modification Outstanding Recorded Investment			338	0
Financial Impact			$ 1	$ 0

LOANS RECEIVABLE AND ALLOWANC63

LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES (Details 7) - Loans Receivable $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016USD ($)loan	Jun. 30, 2015USD ($)loan	Jun. 30, 2016USD ($)	Jun. 30, 2015USD ($)
Financing Receivable, Modifications [Line Items]
Period beyond which a TDR generally becomes delinquent			90 days
Non-PCI Loans
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	$ 8,299	$ 38,217	$ 47,581	$ 39,479
Number of Loans | loan	0	0
Non-PCI Loans | Principal
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	$ 6,350	$ 13,488	39,123	13,932
Non-PCI Loans | Principal and Interest
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment		18,629		19,447
Non-PCI Loans | Interest Rate Reduction
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	795		2,781
Non-PCI Loans | Interest Deferments
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment		6,000		6,000
Non-PCI Loans | Other
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	1,154	100	5,677	100
Non-PCI Loans | CRE
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	7,429	100	21,081	918
Non-PCI Loans | CRE | Principal
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	6,275	0	19,927	0
Non-PCI Loans | CRE | Principal and Interest
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment		0		818
Non-PCI Loans | CRE | Interest Rate Reduction
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	0		0
Non-PCI Loans | CRE | Interest Deferments
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment		0		0
Non-PCI Loans | CRE | Other
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	1,154	100	1,154	100
Non-PCI Loans | C&I
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	75	38,117	25,098	38,280
Non-PCI Loans | C&I | Principal
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	75	13,488	18,589	13,651
Non-PCI Loans | C&I | Principal and Interest
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment		18,629		18,629
Non-PCI Loans | C&I | Interest Rate Reduction
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	0		1,986
Non-PCI Loans | C&I | Interest Deferments
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment		6,000		6,000
Non-PCI Loans | C&I | Other
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	0	0	4,523	0
Non-PCI Loans | Residential
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	795	0	1,064	281
Non-PCI Loans | Residential | Principal
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	0	0	269	281
Non-PCI Loans | Residential | Principal and Interest
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment		0		0
Non-PCI Loans | Residential | Interest Rate Reduction
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	795		795
Non-PCI Loans | Residential | Interest Deferments
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment		0		0
Non-PCI Loans | Residential | Other
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	$ 0	$ 0	0	0
Non-PCI Loans | Consumer
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment			338	0
Non-PCI Loans | Consumer | Principal
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment			338	0
Non-PCI Loans | Consumer | Principal and Interest
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment				0
Non-PCI Loans | Consumer | Interest Rate Reduction
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment			0
Non-PCI Loans | Consumer | Interest Deferments
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment				0
Non-PCI Loans | Consumer | Other
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment			$ 0	$ 0

LOANS RECEIVABLE AND ALLOWANC64

LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES (Details 8) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016USD ($)loan	Jun. 30, 2015USD ($)loan	Jun. 30, 2016USD ($)loan	Jun. 30, 2015USD ($)loan
Financing Receivable, Modifications [Line Items]
Additional funds committed to lend to borrowers whose terms have been modified	$ 4,300		$ 4,300
Loans Receivable | Non-PCI Loans
Financing Receivable, Modifications [Line Items]
Number of Loans | loan	0	0
Recorded Investment	$ 0	$ 0
Loans Receivable | Non-PCI Loans | C&I | Commercial business
Financing Receivable, Modifications [Line Items]
Number of Loans | loan			3	0
Recorded Investment			$ 568	$ 0

LOANS RECEIVABLE AND ALLOWANC65

LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES (Details 9) - Loans Receivable - Non-PCI Loans - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Impaired loans disclosures
Unpaid Principal Balance	$ 263,829		$ 263,829		$ 184,401
Recorded Investment With No Allowance	127,722		127,722		77,369
Recorded Investment With Allowance	106,395		106,395		85,837
Total Recorded Investment	234,117		234,117		163,206
Related Allowance	22,514		22,514		20,338
Average Recorded Investment	237,284	$ 177,402	239,658	$ 176,918
Recognized Interest Income	916	1,226	1,829	2,511
CRE | Income producing
Impaired loans disclosures
Unpaid Principal Balance	86,401		86,401		47,043
Recorded Investment With No Allowance	59,990		59,990		24,347
Recorded Investment With Allowance	17,763		17,763		15,720
Total Recorded Investment	77,753		77,753		40,067
Related Allowance	464		464		3,148
Average Recorded Investment	78,623	46,042	79,549	46,897
Recognized Interest Income	404	134	816	268
CRE | Construction
Impaired loans disclosures
Unpaid Principal Balance					66
Recorded Investment With No Allowance					0
Recorded Investment With Allowance					14
Total Recorded Investment					14
Related Allowance					1
Average Recorded Investment	0	14	0	14
Recognized Interest Income	0	0	0	0
CRE | Land
Impaired loans disclosures
Unpaid Principal Balance	6,910		6,910		1,537
Recorded Investment With No Allowance	5,279		5,279		632
Recorded Investment With Allowance	1,114		1,114		683
Total Recorded Investment	6,393		6,393		1,315
Related Allowance	74		74		118
Average Recorded Investment	6,690	5,876	6,859	5,951
Recognized Interest Income	8	10	17	20
C&I | Commercial business
Impaired loans disclosures
Unpaid Principal Balance	115,023		115,023		81,720
Recorded Investment With No Allowance	32,444		32,444		31,045
Recorded Investment With Allowance	65,559		65,559		40,111
Total Recorded Investment	98,003		98,003		71,156
Related Allowance	21,260		21,260		15,993
Average Recorded Investment	100,124	73,306	100,308	71,644
Recognized Interest Income	270	761	530	1,550
C&I | Trade finance
Impaired loans disclosures
Unpaid Principal Balance	13,158		13,158		10,675
Recorded Investment With No Allowance	9,256		9,256		0
Recorded Investment With Allowance	3,775		3,775		10,675
Total Recorded Investment	13,031		13,031		10,675
Related Allowance	22		22		95
Average Recorded Investment	12,716	11,623	13,514	11,739
Recognized Interest Income	67	51	133	134
Residential | Single-family
Impaired loans disclosures
Unpaid Principal Balance	14,154		14,154		16,486
Recorded Investment With No Allowance	2,378		2,378		4,401
Recorded Investment With Allowance	10,294		10,294		10,611
Total Recorded Investment	12,672		12,672		15,012
Related Allowance	378		378		584
Average Recorded Investment	12,713	15,595	12,797	15,658
Recognized Interest Income	74	68	148	137
Residential | Multifamily
Impaired loans disclosures
Unpaid Principal Balance	26,606		26,606		25,634
Recorded Investment With No Allowance	18,375		18,375		16,944
Recorded Investment With Allowance	6,313		6,313		6,783
Total Recorded Investment	24,688		24,688		23,727
Related Allowance	271		271		339
Average Recorded Investment	24,836	23,690	25,045	23,757
Recognized Interest Income	77	190	154	379
Consumer
Impaired loans disclosures
Unpaid Principal Balance	1,577		1,577		1,240
Recorded Investment With No Allowance	0		0		0
Recorded Investment With Allowance	1,577		1,577		1,240
Total Recorded Investment	1,577		1,577		1,240
Related Allowance	45		45		$ 60
Average Recorded Investment	1,582	1,256	1,586	1,258
Recognized Interest Income	$ 16	$ 12	$ 31	$ 23

LOANS RECEIVABLE AND ALLOWANC66

LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES (Details 10) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Financing Receivable Allowance for Credit Losses Roll Forward
Beginning balance			$ 264,959
Ending balance	$ 266,768		266,768
Allowance for Unfunded Credit Reserve
Financing Receivable Allowance for Credit Losses Roll Forward
Beginning balance	21,414	$ 15,632	20,360	$ 12,712
(Reversal of) provision for unfunded lending commitments	(1,096)	4,109	(42)	7,029
Ending balance	20,318	19,741	20,318	19,741
CRE
Financing Receivable Allowance for Credit Losses Roll Forward
Beginning balance			81,538
Ending balance	78,345		78,345
C&I
Financing Receivable Allowance for Credit Losses Roll Forward
Beginning balance			134,606
Ending balance	148,435		148,435
Residential
Financing Receivable Allowance for Credit Losses Roll Forward
Beginning balance			39,295
Ending balance	31,567		31,567
Consumer
Financing Receivable Allowance for Credit Losses Roll Forward
Beginning balance			9,520
Ending balance	8,421		8,421
PCI Loans
Financing Receivable Allowance for Credit Losses Roll Forward
Beginning balance			359
Ending balance	257		257
PCI Loans | CRE
Financing Receivable Allowance for Credit Losses Roll Forward
Beginning balance			347
Ending balance	243		243
PCI Loans | C&I
Financing Receivable Allowance for Credit Losses Roll Forward
Beginning balance			9
Ending balance	8		8
PCI Loans | Residential
Financing Receivable Allowance for Credit Losses Roll Forward
Beginning balance			3
Ending balance	6		6
PCI Loans | Consumer
Financing Receivable Allowance for Credit Losses Roll Forward
Beginning balance			0
Ending balance	0		0
Loans Receivable
Financing Receivable Allowance for Credit Losses Roll Forward
Beginning balance	260,238	257,738	264,959	261,679
(Reversal of) provision for loan losses	7,149	(615)	7,535	1,452
Charge-offs	(2,356)	(3,192)	(8,410)	(11,992)
Recoveries	1,737	7,298	2,684	10,090
Net recoveries (charge-offs)	(619)	4,106	(5,726)	(1,902)
Ending balance	266,768	261,229	266,768	261,229
Loans Receivable | PCI Loans
Financing Receivable Allowance for Credit Losses Roll Forward
Beginning balance	328	643	359	714
(Reversal of) provision for loan losses	(71)	(31)	(102)	(102)
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Net recoveries (charge-offs)	0	0	0	0
Ending balance	257	612	257	612
Loans Receivable | Non-PCI Loans
Financing Receivable Allowance for Credit Losses Roll Forward
Beginning balance	259,910	257,095	264,600	260,965
(Reversal of) provision for loan losses	7,220	(584)	7,637	1,554
Charge-offs	(2,356)	(3,192)	(8,410)	(11,992)
Recoveries	1,737	7,298	2,684	10,090
Net recoveries (charge-offs)	(619)	4,106	(5,726)	(1,902)
Ending balance	266,511	260,617	266,511	260,617
Loans Receivable | Non-PCI Loans | CRE
Financing Receivable Allowance for Credit Losses Roll Forward
Beginning balance	82,538	69,740	81,191	72,263
(Reversal of) provision for loan losses	(4,439)	5,739	(3,133)	3,406
Charge-offs	(139)	(348)	(195)	(1,350)
Recoveries	142	365	239	1,177
Net recoveries (charge-offs)	3	17	44	(173)
Ending balance	78,102	75,496	78,102	75,496
Loans Receivable | Non-PCI Loans | C&I
Financing Receivable Allowance for Credit Losses Roll Forward
Beginning balance	134,077	133,914	134,597	134,598
(Reversal of) provision for loan losses	15,347	(2,716)	20,001	2,662
Charge-offs	(2,214)	(2,843)	(8,074)	(9,432)
Recoveries	1,217	5,607	1,903	6,134
Net recoveries (charge-offs)	(997)	2,764	(6,171)	(3,298)
Ending balance	148,427	133,962	148,427	133,962
Loans Receivable | Non-PCI Loans | Residential
Financing Receivable Allowance for Credit Losses Roll Forward
Beginning balance	33,935	42,990	39,292	43,856
(Reversal of) provision for loan losses	(2,671)	(3,318)	(7,988)	(4,889)
Charge-offs	0	(1)	(137)	(747)
Recoveries	297	997	394	2,448
Net recoveries (charge-offs)	297	996	257	1,701
Ending balance	31,561	40,668	31,561	40,668
Loans Receivable | Non-PCI Loans | Consumer
Financing Receivable Allowance for Credit Losses Roll Forward
Beginning balance	9,360	10,451	9,520	10,248
(Reversal of) provision for loan losses	(1,017)	(289)	(1,243)	375
Charge-offs	(3)	0	(4)	(463)
Recoveries	81	329	148	331
Net recoveries (charge-offs)	78	329	144	(132)
Ending balance	$ 8,421	$ 10,491	$ 8,421	$ 10,491

LOANS RECEIVABLE AND ALLOWANC67

LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES (Details 11) - USD ($) $ in Thousands	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014
Allowance for loan losses
Individually evaluated for impairment	$ 22,514		$ 20,338
Collectively evaluated for impairment	243,997		244,262
Allowance for loan losses	266,768		264,959
Acquired with deteriorated credit quality
Allowance for loan losses
Allowance for loan losses	257		359
CRE
Allowance for loan losses
Individually evaluated for impairment	538		3,267
Collectively evaluated for impairment	77,564		77,924
Allowance for loan losses	78,345		81,538
CRE | Acquired with deteriorated credit quality
Allowance for loan losses
Allowance for loan losses	243		347
C&I
Allowance for loan losses
Individually evaluated for impairment	21,282		16,088
Collectively evaluated for impairment	127,145		118,509
Allowance for loan losses	148,435		134,606
C&I | Acquired with deteriorated credit quality
Allowance for loan losses
Allowance for loan losses	8		9
Residential
Allowance for loan losses
Individually evaluated for impairment	649		923
Collectively evaluated for impairment	30,912		38,369
Allowance for loan losses	31,567		39,295
Residential | Acquired with deteriorated credit quality
Allowance for loan losses
Allowance for loan losses	6		3
Consumer
Allowance for loan losses
Individually evaluated for impairment	45		60
Collectively evaluated for impairment	8,376		9,460
Allowance for loan losses	8,421		9,520
Consumer | Acquired with deteriorated credit quality
Allowance for loan losses
Allowance for loan losses	0		0
Loans Receivable
Allowance for loan losses
Allowance for loan losses	266,768	$ 260,238	264,959	$ 261,229	$ 257,738	$ 261,679
Recorded investment in loans
Individually evaluated for impairment	234,117		163,206
Collectively evaluated for impairment	23,208,056		22,525,801
Total loans	24,236,216		23,659,761
Loans Receivable | Acquired with deteriorated credit quality
Allowance for loan losses
Allowance for loan losses	257	$ 328	359	$ 612	$ 643	$ 714
Recorded investment in loans
Total loans	794,043		970,754
Loans Receivable | CRE
Recorded investment in loans
Individually evaluated for impairment	84,146		41,396
Collectively evaluated for impairment	7,941,484		7,519,988
Total loans	8,476,682		8,110,749
Loans Receivable | CRE | Acquired with deteriorated credit quality
Recorded investment in loans
Total loans	451,052		549,365
Loans Receivable | C&I
Recorded investment in loans
Individually evaluated for impairment	111,034		81,831
Collectively evaluated for impairment	9,006,148		8,861,960
Total loans	9,163,804		9,003,007
Loans Receivable | C&I | Acquired with deteriorated credit quality
Recorded investment in loans
Total loans	46,622		59,216
Loans Receivable | Residential
Recorded investment in loans
Individually evaluated for impairment	37,360		38,739
Collectively evaluated for impairment	4,220,215		4,213,265
Total loans	4,532,300		4,589,914
Loans Receivable | Residential | Acquired with deteriorated credit quality
Recorded investment in loans
Total loans	274,725		337,910
Loans Receivable | Consumer
Recorded investment in loans
Individually evaluated for impairment	1,577		1,240
Collectively evaluated for impairment	2,040,209		1,930,588
Total loans	2,063,430		1,956,091
Loans Receivable | Consumer | Acquired with deteriorated credit quality
Recorded investment in loans
Total loans	$ 21,644		$ 24,263

LOANS RECEIVABLE AND ALLOWANC68

LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES (Details 12) - Loans Receivable - PCI Loans - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Changes in accretable yield for PCI loans
Beginning balance	$ 185,991	$ 293,155	$ 214,907	$ 311,688
Accretion	(16,254)	(23,359)	(38,683)	(53,928)
Changes in expected cash flows	(2,960)	2,066	(9,447)	14,102
Ending balance	$ 166,777	$ 271,862	$ 166,777	$ 271,862

LOANS RECEIVABLE AND ALLOWANC69

LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES (Details 13) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Loans Held for Sale
Loans held for sale	$ 51,290,000		$ 51,290,000		$ 31,958,000
Loans transferred to loans held for sale, net	267,100,000	$ 335,700,000	575,804,000	$ 1,156,180,000
Write-down of loans transferred from loans held-for-investment to loans held for sale recorded to allowance for loan losses	37,000	441,000	1,900,000	2,100,000
Held-to-maturity investment security	159,208,000		159,208,000		$ 0
Loans held for sale
Loans Held for Sale
LOCOM adjustment	0	517,000	2,400,000	517,000
Multifamily
Loans Held for Sale
Gain on securitizations			1,100,000
Mortgage servicing rights			641,000
Held-to-maturity investment security	160,100,000		160,100,000
Loans securitized			201,700,000
Originated
Loans Held for Sale
Net gains from sales of loans held for sale during the period	2,800,000	5,800,000
Carrying value of loans sold	166,000,000	232,300,000
Originated | Multifamily residential, C&I, and CRE
Loans Held for Sale
Loans sold or securitized			422,200,000
Net gains from sales of loans held for sale during the period			7,100,000
Originated | Single-family residential and C&I
Loans Held for Sale
Net gains from sales of loans held for sale during the period				14,300,000
Carrying value of loans sold				559,100,000
Purchased | Loans sold in secondary market
Loans Held for Sale
Net gains from sales of loans held for sale during the period	69,000	30,000	69,000	1,000,000
Carrying value of loans sold	$ 79,700,000	$ 103,100,000	$ 133,600,000	$ 446,100,000

INVESTMENTS IN QUALIFIED AFFO70

INVESTMENTS IN QUALIFIED AFFORDABLE HOUSING PARTNERSHIPS, TAX CREDIT AND OTHER INVESTMENTS, NET (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
INVESTMENTS IN QUALIFIED AFFORDABLE HOUSING PARTNERSHIPS, TAX CREDIT AND OTHER INVESTMENTS, NET
Minimum compliance period for qualified affordable housing partnerships to fully utilize the tax credits (in years)			15 years
Investments in qualified affordable housing partnerships, net	$ 179,657		$ 179,657		$ 193,978
Accrued expenses and other liabilities — Unfunded commitments	45,995		45,995		$ 61,525
Tax credits and other tax benefits recognized	8,518	$ 8,605	17,970	$ 17,380
Amortization expense included in income tax expense	$ 7,345	$ 6,152	$ 14,311	$ 12,396

INVESTMENTS IN QUALIFIED AFFO71

INVESTMENTS IN QUALIFIED AFFORDABLE HOUSING PARTNERSHIPS, TAX CREDIT AND OTHER INVESTMENTS, NET (Details 2) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
INVESTMENTS IN QUALIFIED AFFORDABLE HOUSING PARTNERSHIPS, TAX CREDIT AND OTHER INVESTMENTS, NET
Investments in tax credit and other investments, net	$ 177,900		$ 177,900		$ 187,200
Total unfunded commitments for investments in tax credit and other investments	102,900		102,900		$ 113,200
Noninterest expense — amortization of tax credit and other investments	$ 14,006	$ 2,997	$ 28,161	$ 9,296

GOODWILL AND OTHER INTANGIBLE72

GOODWILL AND OTHER INTANGIBLE ASSETS (Details)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2016USD ($)	Jun. 30, 2015USD ($)	Jun. 30, 2016USD ($)segment	Jun. 30, 2015USD ($)	Dec. 31, 2015USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	$ 469,433,000	$ 469,433,000	$ 469,433,000	$ 469,433,000	$ 469,433,000
Number of operating segments | segment			3
Goodwill impairment					$ 0
Amortization expense	$ 2,050,000	$ 2,337,000	$ 4,154,000	$ 4,728,000

GOODWILL AND OTHER INTANGIBLE73

GOODWILL AND OTHER INTANGIBLE ASSETS (Details 2) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Gross balance	$ 108,814	$ 108,814
Accumulated amortization	76,893	72,739
Total	$ 31,921	$ 36,075

GOODWILL AND OTHER INTANGIBLE74

GOODWILL AND OTHER INTANGIBLE ASSETS (Details 3) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Year Ended December 31,
Total	$ 31,921	$ 36,075
Acquired Deposits
Year Ended December 31,
Remainder of 2016	3,932
2,017	6,935
2,018	5,883
2,019	4,864
2,020	3,846
Thereafter	6,461
Total	$ 31,921

COMMITMENTS AND CONTINGENCIES75

COMMITMENTS AND CONTINGENCIES (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014
Credit Extensions
Allowance for unfunded credit reserves	$ 266,768		$ 264,959
Unfunded Lending Commitments
Credit Extensions
Allowance for unfunded credit reserves	20,318	$ 21,414	20,360	$ 19,741	$ 15,632	$ 12,712
Unfunded Lending Commitments | Accrued Expenses and Other Liabilities
Credit Extensions
Allowance for unfunded credit reserves	19,800		19,800
Undisbursed Loan Commitments
Credit Extensions
Loan commitments	4,758,116		3,370,271
Commercial and Standby Letters of Credit
Credit Extensions
Commercial and SBLCs	1,447,447		$ 1,293,547
Commercial Letters Of Credit
Credit Extensions
Commercial and SBLCs	43,700
Standby Letters of Credit
Credit Extensions
Commercial and SBLCs	$ 1,400,000

COMMITMENTS AND CONTINGENCIES76

COMMITMENTS AND CONTINGENCIES (Details 2) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Guarantees
Allowance for unfunded credit reserves	$ 266,768	$ 264,959
Other Commitments
Unfunded commitments in investments in AHP and other tax credit investments	148,900	174,700
Loans Sold or Securitized with Recourse
Guarantees
Unpaid principal amount of loans sold or securitized with recourse	$ 168,600	191,300
Recourse provision limitation, maximum percentage of the top loss on the multifamily loans	4.00%
Loans Sold or Securitized with Full Recourse [Member]
Guarantees
Maximum potential future payments	$ 26,400	29,800
Loans Sold or Securitized with Limited Recourse [Member]
Guarantees
Maximum potential future payments	5,200	5,900
East West Bank | F&F, LLC and 618 Investment, Inc. v. East West Bank
Litigation
Litigation accrual	37,200	35,400
Accrued Expenses and Other Liabilities | Loans Sold or Securitized with Recourse
Guarantees
Allowance for unfunded credit reserves	$ 499	$ 630

STOCK COMPENSATION PLANS (Detai

STOCK COMPENSATION PLANS (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation costs	$ 4,635	$ 3,698	$ 9,210	$ 7,652
Net tax benefit recognized in equity for stock compensation plans			1,005	3,196
Common Stock and Additional Paid-in Capital
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Net tax benefit recognized in equity for stock compensation plans	$ 19	$ 51	$ 1,005	$ 3,196

STOCK COMPENSATION PLANS (Det78

STOCK COMPENSATION PLANS (Details 2) $ / shares in Units, $ in Millions	6 Months Ended
	Jun. 30, 2016USD ($)$ / sharesshares
Restricted stock units | Ratably
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	3 years
Restricted stock units | Cliff | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	3 years
Restricted stock units | Cliff | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	5 years
Time-Based
Shares
Outstanding at beginning of period (in shares) | shares	933,312
Granted (in shares) | shares	486,607
Vested (in shares) | shares	(114,824)
Forfeited (in shares) | shares	(56,581)
Outstanding at end of period (in shares) | shares	1,248,514
Weighted Average Grant-Date Fair Value
Outstanding at beginning of period (in dollars per share) | $ / shares	$ 36.83
Granted (in dollars per share) | $ / shares	31.37
Vested (in dollars per share) | $ / shares	25.12
Forfeited (in dollars per share) | $ / shares	35.95
Outstanding at end of period (in dollars per share) | $ / shares	$ 35.82
Total unrecognized compensation cost | $	$ 31
Weighted average period to recognize unrecognized compensation cost (in years)	2 years 2 days
Performance-Based
Shares
Outstanding at beginning of period (in shares) | shares	389,358
Granted (in shares) | shares	159,407
Vested (in shares) | shares	(138,019)
Forfeited (in shares) | shares	0
Outstanding at end of period (in shares) | shares	410,746
Weighted Average Grant-Date Fair Value
Outstanding at beginning of period (in dollars per share) | $ / shares	$ 34.21
Granted (in dollars per share) | $ / shares	29.18
Vested (in dollars per share) | $ / shares	25.25
Forfeited (in dollars per share) | $ / shares	0
Outstanding at end of period (in dollars per share) | $ / shares	$ 35.27
Total unrecognized compensation cost | $	$ 11.4
Weighted average period to recognize unrecognized compensation cost (in years)	1 year 10 months 10 days

STOCKHOLDERS' EQUITY AND EARN79

STOCKHOLDERS' EQUITY AND EARNINGS PER SHARE (Details) - shares	Jun. 30, 2016	Jan. 17, 2014	Jan. 16, 2014
Class of Stock
Shares of East West's common stock into which the warrant may be converted		230,282
Number of warrants exercised	0
MetroCorp | MetroCorp
Class of Stock
Shares of East West's common stock into which the warrant may be converted			771,429

STOCKHOLDERS' EQUITY AND EARN80

STOCKHOLDERS' EQUITY AND EARNINGS PER SHARE (Details 2) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Basic
Net income	$ 103,284	$ 98,748	$ 210,800	$ 198,775
Less: Earnings allocated to participating securities	0	0	0	3
Net income allocated to common stockholders	$ 103,284	$ 98,748	$ 210,800	$ 198,772
Basic weighted average shares outstanding (in shares)	144,101	143,846	144,029	143,751
Basic EPS (in dollars per share)	$ 0.72	$ 0.69	$ 1.46	$ 1.38
Diluted
Net income allocated to diluted common stockholders	$ 103,284	$ 98,748	$ 210,800	$ 198,772
Basic weighted average shares outstanding (in shares)	144,101	143,846	144,029	143,751
Diluted potential common shares (in shares)	977	634	944	657
Diluted weighted average shares outstanding (in shares)	145,078	144,480	144,973	144,408
Diluted EPS (in dollars per share)	$ 0.71	$ 0.68	$ 1.45	$ 1.38

STOCKHOLDERS' EQUITY AND EARN81

STOCKHOLDERS' EQUITY AND EARNINGS PER SHARE (Details 3) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
STOCKHOLDERS' EQUITY AND EARNINGS PER SHARE
Weighted average anti-dilutive shares (in shares)	3	3	10	3

ACCUMULATED OTHER COMPREHENSI82

ACCUMULATED OTHER COMPREHENSIVE INCOME (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			$ 3,122,950	$ 2,856,111
Other comprehensive income (loss)	$ 346	$ (8,125)	13,229	1,193
Ending balance	3,296,910	3,004,948	3,296,910	3,004,948
Available-for-Sale Investment Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	6,772	13,555	(6,144)	4,237
Net unrealized gains (losses) arising during the period	6,628	(4,904)	21,770	6,969
Amounts reclassified from AOCI	(1,644)	(3,221)	(3,870)	(5,776)
Other comprehensive income (loss)	4,984	(8,125)	17,900	1,193
Ending balance	11,756	5,430	11,756	5,430
Foreign Currency Translation Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(8,830)		(8,797)
Net unrealized gains (losses) arising during the period	(4,638)	0	(4,671)	0
Amounts reclassified from AOCI	0		0
Other comprehensive income (loss)	(4,638)	0	(4,671)	0
Ending balance	(13,468)		(13,468)
Total
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(2,058)	13,555	(14,941)	4,237
Net unrealized gains (losses) arising during the period	1,990	(4,904)	17,099	6,969
Amounts reclassified from AOCI	(1,644)	(3,221)	(3,870)	(5,776)
Other comprehensive income (loss)	346	(8,125)	13,229	1,193
Ending balance	$ (1,712)	$ 5,430	$ (1,712)	$ 5,430

ACCUMULATED OTHER COMPREHENSI83

ACCUMULATED OTHER COMPREHENSIVE INCOME (Details 2) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Before-Tax
Net change	$ 3,961	$ (14,009)	$ 26,216	$ 2,056
Tax Effect
Net change	(3,615)	5,884	(12,987)	(863)
Net-of-Tax
Other comprehensive income (loss)	346	(8,125)	13,229	1,193
Available-for-Sale Investment Securities
Before-Tax
Net unrealized gains (losses) arising during the period	11,435	(8,455)	37,565	12,014
Net realized gains reclassified into net income	(2,836)	(5,554)	(6,678)	(9,958)
Net change	8,599	(14,009)	30,887	2,056
Tax Effect
Net unrealized gains (losses) arising during the period	(4,807)	3,551	(15,795)	(5,045)
Net realized gains reclassified into net income	1,192	2,333	2,808	4,182
Net change	(3,615)	5,884	(12,987)	(863)
Net-of-Tax
Net unrealized gains (losses) arising during the period	6,628	(4,904)	21,770	6,969
Net realized gains reclassified into net income	(1,644)	(3,221)	(3,870)	(5,776)
Other comprehensive income (loss)	4,984	(8,125)	17,900	1,193
Foreign Currency Translation Adjustments
Before-Tax
Net unrealized gains (losses) arising during the period	(4,638)	0	(4,671)	0
Net change	(4,638)	0	(4,671)	0
Tax Effect
Net unrealized gains (losses) arising during the period	0	0	0	0
Net change	0	0	0	0
Net-of-Tax
Net unrealized gains (losses) arising during the period	(4,638)	0	(4,671)	0
Net realized gains reclassified into net income	0		0
Other comprehensive income (loss)	$ (4,638)	$ 0	$ (4,671)	$ 0

BUSINESS SEGMENTS (Details)

BUSINESS SEGMENTS (Details)	6 Months Ended
	Jun. 30, 2016segmentbusiness_division
Segment Reporting [Abstract]
Number of operating segments	3
Number of business divisions | business_division	3
Number of segment whom broad administrative support are provided	2

BUSINESS SEGMENTS (Details 2)

BUSINESS SEGMENTS (Details 2) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Segment Reporting Information
Interest income	$ 278,865	$ 255,445	$ 555,037	$ 518,706
Charge for funds used	(83,249)	(73,408)	(171,529)	(143,502)
Interest spread on funds used	195,616	182,037	383,508	375,204
Interest expense	(25,281)	(27,953)	(49,249)	(55,497)
Credit on funds provided	83,249	73,408	171,529	143,502
Interest spread on funds provided	57,968	45,455	122,280	88,005
Net interest income before provision for credit losses	253,584	227,492	505,788	463,209
(Reversal of) provision for credit losses	6,053	3,494	7,493	8,481
Depreciation, amortization and (accretion), net	12,474	6,119	25,232	10,246
Goodwill	469,433	469,433	469,433	469,433	$ 469,433
Segment pretax profit (loss)	142,916	144,421	287,587	291,247
Segment assets	32,952,212	30,064,072	32,952,212	30,064,072	$ 32,350,922
Operating Segments | Retail Banking
Segment Reporting Information
Interest income	78,635	82,729	156,006	170,175
Charge for funds used	(23,798)	(21,357)	(46,450)	(44,656)
Interest spread on funds used	54,837	61,372	109,556	125,519
Interest expense	(14,672)	(12,996)	(29,278)	(25,219)
Credit on funds provided	69,778	60,950	142,209	118,618
Interest spread on funds provided	55,106	47,954	112,931	93,399
Net interest income before provision for credit losses	109,943	109,326	222,487	218,918
(Reversal of) provision for credit losses	2,445	(3,454)	863	(2,723)
Depreciation, amortization and (accretion), net	(546)	3,235	(503)	4,917
Goodwill	357,207	357,207	357,207	357,207
Segment pretax profit (loss)	36,264	55,349	82,209	108,284
Segment assets	7,437,534	7,373,641	7,437,534	7,373,641
Operating Segments | Commercial Banking
Segment Reporting Information
Interest income	177,426	157,337	354,508	316,122
Charge for funds used	(52,681)	(38,328)	(106,472)	(75,678)
Interest spread on funds used	124,745	119,009	248,036	240,444
Interest expense	(4,240)	(4,710)	(8,266)	(8,973)
Credit on funds provided	8,472	7,995	18,449	16,010
Interest spread on funds provided	4,232	3,285	10,183	7,037
Net interest income before provision for credit losses	128,977	122,294	258,219	247,481
(Reversal of) provision for credit losses	3,608	6,948	6,630	11,204
Depreciation, amortization and (accretion), net	(9,267)	(6,054)	(20,040)	(16,531)
Goodwill	112,226	112,226	112,226	112,226
Segment pretax profit (loss)	95,179	97,269	188,008	190,444
Segment assets	18,196,664	16,141,368	18,196,664	16,141,368
Operating Segments | Other
Segment Reporting Information
Interest income	22,804	15,379	44,523	32,409
Charge for funds used	(6,770)	(13,723)	(18,607)	(23,168)
Interest spread on funds used	16,034	1,656	25,916	9,241
Interest expense	(6,369)	(10,247)	(11,705)	(21,305)
Credit on funds provided	4,999	4,463	10,871	8,874
Interest spread on funds provided	(1,370)	(5,784)	(834)	(12,431)
Net interest income before provision for credit losses	14,664	(4,128)	25,082	(3,190)
(Reversal of) provision for credit losses	0	0	0	0
Depreciation, amortization and (accretion), net	22,287	8,938	45,775	21,860
Goodwill	0	0	0	0
Segment pretax profit (loss)	11,473	(8,197)	17,370	(7,481)
Segment assets	$ 7,318,014	$ 6,549,063	$ 7,318,014	$ 6,549,063

SUBSEQUENT EVENTS (Details)

SUBSEQUENT EVENTS (Details) - $ / shares	Jul. 20, 2016	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Subsequent events
Dividends declared per common share (in dollars per share)		$ 0.2	$ 0.2	$ 0.4	$ 0.4
Subsequent Event
Subsequent events
Dividends declared per common share (in dollars per share)	$ 0.20