Hope Bancorp (HOPE) 10-Q 20 Jul 17 2017 Q1 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	3 Months Ended
	Mar. 31, 2017	Jul. 12, 2017
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q1
Entity Registrant Name	Hope Bancorp Inc
Entity Central Index Key	1,128,361
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		135,303,015

Condensed Consolidated Statemen

Condensed Consolidated Statements Of Financial Condition - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Other Investments	$ 43,958	$ 44,202
Cash and cash equivalents:
Cash and due from banks	160,918	168,827
Interest bearing deposits in other banks	300,150	268,507
Total cash and cash equivalents	461,068	437,334
Securities available for sale, at fair value	1,583,946	1,556,740
Loans held for sale, at the lower of cost or fair value	19,141	22,785
Loans receivable (net of allowance for loan losses of $78,659 and $79,343 at March 31, 2017 and December 31, 2016, respectively)	10,471,008	10,463,989
Other real estate owned (“OREO”), net	19,096	21,990
Federal Home Loan Bank (“FHLB”) stock, at cost	21,203	21,964
Assets Held-for-sale, Not Part of Disposal Group, Current	3,300	0
Premises and equipment, net	51,125	55,316
Accrued interest receivable	25,683	26,880
Deferred tax assets, net	80,321	88,110
Customers’ liabilities on acceptances	2,771	2,899
Bank owned life insurance (“BOLI”)	74,090	73,696
Investments in affordable housing partnerships	76,398	70,059
Goodwill	463,975	462,997
Core deposit intangible assets, net	18,550	19,226
Servicing assets	25,941	26,457
Other assets	39,855	46,778
Total assets	13,481,429	13,441,422
LIABILITIES:
Noninterest bearing	2,963,947	2,900,241
Interest bearing:
Money market and NOW accounts	3,481,231	3,401,446
Savings deposits	289,924	301,906
Time deposits	3,968,675	4,038,442
Total deposits	10,703,777	10,642,035
FHLB advances	703,850	754,290
Subordinated debentures	100,067	99,808
Accrued interest payable	10,592	10,863
Acceptances outstanding	2,771	2,899
Commitments and Contingencies	31,530	24,409
Other liabilities	50,795	51,645
Total liabilities	11,603,382	11,585,949
STOCKHOLDERS’ EQUITY:
Common stock, $0.001 par value; authorized 150,000,000 shares at March 31, 2017 and December 31, 2016; issued and outstanding, 135,248,185 and 135,240,079 shares at March 31, 2017 and December 31, 2016, respectively	135	135
Additional paid-in capital	1,401,275	1,400,490
Retained earnings	489,486	469,505
Accumulated other comprehensive loss, net	(12,849)	(14,657)
Total stockholders’ equity	1,878,047	1,855,473
Total liabilities and stockholders’ equity	$ 13,481,429	$ 13,441,422

Condensed Consolidated Stateme3

Condensed Consolidated Statements Of Financial Condition (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Loans receivable, allowance	$ 79,976	$ 79,343
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	150,000,000	150,000,000
Common stock, shares issued	135,109,641	135,240,079
Common stock, shares outstanding	135,109,641	135,240,079

Condensed Consolidated Stateme4

Condensed Consolidated Statements Of Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
INTEREST INCOME:
Loans, including fees	$ 123,294	$ 77,118
Securities	8,113	5,677
Interest bearing deposits in other bank and other investments	1,336	666
Total interest income	132,743	83,461
INTEREST EXPENSE:
Deposits	14,511	9,907
FHLB advances	2,139	1,523
Other borrowings	1,188	424
Total interest expense	17,838	11,854
NET INTEREST INCOME BEFORE PROVISION FOR LOAN LOSSES	114,905	71,607
PROVISION FOR LOAN LOSSES	5,600	500
NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES	109,305	71,107
NONINTEREST INCOME:
Service fees on deposit accounts	5,338	2,683
International service fees	1,108	776
Loan servicing fees, net	1,438	690
Wire transfer fees	1,186	914
Other income and fees	4,863	1,887
Net gains on sales of SBA loans	3,250	1,825
Net gains on sales of other loans	420	0
Total noninterest income	17,603	8,775
NONINTEREST EXPENSE:
Salaries and employee benefits	34,166	21,569
Occupancy	7,194	4,817
Furniture and equipment	3,413	2,287
Advertising and marketing	3,424	1,136
Data processing and communications	3,606	2,171
Professional fees	3,902	1,083
FDIC assessments	1,010	1,038
Credit related expenses	1,883	421
OREO expense, net	997	1,428
Merger and integration expenses	947	1,207
Other	7,157	2,892
Total noninterest expense	67,699	40,049
INCOME BEFORE INCOME TAX PROVISION	59,209	39,833
INCOME TAX PROVISION	22,999	16,210
NET INCOME	$ 36,210	$ 23,623
EARNINGS PER COMMON SHARE
Basic (in dollars per share)	$ 0.27	$ 0.30
Diluted (in dollars per share)	$ 0.27	$ 0.30

Condensed Consolidated Stateme5

Condensed Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 36,210	$ 23,623
Other comprehensive income:
Change in unrealized net holding gains on securities available for sale	3,181	15,633
Change in unrealized net holding gains on interest only strips	(49)	(41)
Less tax effect	1,324	6,605
Other comprehensive income, net of tax	1,808	8,987
Total comprehensive income	$ 38,018	$ 32,610

Condensed Consolidated Stateme6

Condensed Consolidated Statements Of Changes In Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital [Member]	Retained earnings	Accumulated other comprehensive income (loss), net
Balance at Dec. 31, 2015	$ 938,095	$ 80	$ 541,596	$ 398,251	$ (1,832)
Balance, shares at Dec. 31, 2015		79,566,356
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of additional shares pursuant to various stock plans	7		7
Issuance of additional shares pursuant to various stock plans, shares		30,750
Stock-based compensation	22		22
Cash dividends declared on common stock	(8,752)			(8,752)
Comprehensive income:
Net income	23,623			23,623
Other comprehensive income (loss)	8,987				8,987
Balance at Mar. 31, 2016	961,982	$ 80	541,625	413,122	7,155
Balance, shares at Mar. 31, 2016		79,597,106
Balance at Dec. 31, 2016	1,855,473	$ 135	1,400,490	469,505	(14,657)
Balance, shares at Dec. 31, 2016		135,240,079
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of additional shares pursuant to various stock plans	252		252
Issuance of additional shares pursuant to various stock plans, shares		8,106
Stock-based compensation	533		533
Cash dividends declared on common stock	(16,229)			(16,229)
Comprehensive income:
Net income	36,210			36,210
Other comprehensive income (loss)	1,808				1,808
Balance at Mar. 31, 2017	$ 1,878,047	$ 135	$ 1,401,275	$ 489,486	$ (12,849)
Balance, shares at Mar. 31, 2017		135,248,185

Condensed Consolidated Stateme7

Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 36,210	$ 23,623
Adjustments to reconcile net income to net cash from operating activities:
Depreciation, amortization, net of discount accretion	(504)	(798)
Stock-based compensation expense	746	22
Provision for loan losses	5,600	500
Valuation adjustment of OREO	592	695
Change in deferred income taxes, net	7,182	6,794
Proceeds from sales of loans held for sale	70,254	25,900
Originations of loans held for sale	(53,903)	(29,593)
Net gains on sales of SBA and other loans	(3,670)	(1,825)
Originations of servicing assets	(1,296)	(777)
Earnings on BOLI	(394)	(274)
Derivative, Gain (Loss) on Derivative, Net	33	0
Loss on disposal of equipment	147	0
Net loss (gain) on sales of OREO	3	(132)
Net change in accrued interest receivable	1,197	(465)
Loss on investments in affordable housing partnership	2,077	405
Net change in other assets	6,981	(18,978)
Net change in accrued interest payable	(271)	739
Net change in other liabilities	(850)	(981)
Net cash provided by operating activities	71,218	4,855
CASH FLOWS FROM INVESTING ACTIVITIES
Net change in loans receivable	(17,288)	(120,570)
Proceeds from sales of OREO	194	2,617
Purchase of premises and equipment	(2,491)	(2,303)
Purchase of securities available for sale	(94,890)	(99,566)
Purchases of other investments	0	(1,470)
Redemption of FHLB stock	761	0
Proceeds from matured, called, or paid-down of securities available for sale	68,124	36,435
Investments in affordable housing partnerships	1,379	0
Net cash used in investing activities	(46,725)	(184,857)
CASH FLOWS FROM FINANCING ACTIVITIES
Net change in deposits	65,218	126,459
Cash dividends paid on Common Stock	(16,229)	(8,752)
Proceeds from FHLB advances	50,000	150,000
Repayment of FHLB advances	100,000	150,000
Issuance of additional stock pursuant to various stock plans	252	7
Tax effects of issuance of shares from various stock plans	73
Net cash (used in) provided by financing activities	(759)	117,714
NET CHANGE IN CASH AND CASH EQUIVALENTS	23,734	(62,288)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	437,334	298,389
CASH AND CASH EQUIVALENTS, END OF PERIOD	461,068	236,101
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION
Interest paid	21,767	11,115
Income taxes paid	1,161	20,862
SUPPLEMENTAL DISCLOSURES OF NON-CASH ACTIVITIES
Transfer from loans receivable to OREO	137	1,895
Transfer from loans receivable to loans held for sale	9,451	450
Loans transferred to loans receivable from held for sale	159	0
Transfer of premises and equipment to premises held for sale	3,300	0
New commitments to fund affordable housing partnership investments	8,500	0
Payments for (Proceeds from) Other Investing Activities	244	0
Impairment of property, plant, and equipment held for sale	$ 1,084	$ 0

Hope Bancorp, Inc.

Hope Bancorp, Inc.	3 Months Ended
	Mar. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Hope Bancorp, Inc.	Hope Bancorp, Inc. Hope Bancorp, Inc. (“Hope Bancorp” on a parent-only basis and the “Company” on a consolidated basis), headquartered in Los Angeles, California, is the holding company for Bank of Hope (the “Bank”). As of March 31, 2017 , the Bank operated branches in California, Washington, Texas, Illinois, Alabama, Georgia, Virginia, New Jersey, and New York, as well as loan production offices in Georgia, Virginia, Texas, Colorado, Oregon, Washington, Southern California, and Northern California. The Company is a corporation organized under the laws of the state of Delaware and a bank holding company registered under the Bank Holding Company Act of 1956, as amended. Effective at the close of business on July 29, 2016, the Company (previously known as BBCN Bancorp, Inc.) completed its previously-announced merger with Wilshire Bancorp, Inc. (“Wilshire”) pursuant to the Agreement and Plan of Merger, dated as of December 7, 2015, by and between the Company and Wilshire (the “Merger Agreement”). On the date of the acquisition, Wilshire merged with and into the Company, with Company being the surviving corporation. On the date of the merger with Wilshire, the Company changed its name to “Hope Bancorp, Inc.” and changed its ticker symbol to “HOPE”.

Basis of Presentation

Basis of Presentation	3 Months Ended
	Mar. 31, 2017
Basis Of Presentation [Abstract]
Basis of Presentation	Basis of Presentation The consolidated financial statements included herein have been prepared without an audit, pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”), except for the Consolidated Statement of Financial Condition as of December 31, 2016 which was from the audited financial statements included in the Company’s 2016 Annual Report on Form 10-K. Certain information and footnote disclosures normally included in consolidated financial statements prepared in accordance with accounting principles generally accepted in the United States of America have been condensed or omitted pursuant to such SEC rules and regulations. The consolidated financial statements include the accounts of Hope Bancorp and its wholly owned subsidiaries, principally Bank of Hope. All intercompany transactions and balances have been eliminated in consolidation. The Company has made all adjustments, that in the opinion of management, are necessary to fairly present the Company’s financial position at March 31, 2017 and December 31, 2016 and the results of operations for the three months ended March 31, 2017 and 2016 . Certain reclassifications have been made to prior period amounts to conform to the current year presentation. The results of operations for the interim periods are not necessarily indicative of results to be anticipated for the full year. The preparation of consolidated financial statements in conformity with U.S. generally accepted accounting principles (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ significantly from those estimates. These unaudited consolidated financial statements should be read along with the audited consolidated financial statements and accompanying notes included in the Company’s 2016 Annual Report on Form 10-K. Accounting Pronouncements Adopted: ASU 2016-05 “Derivatives and Hedging (Topic 815): Effect of Derivative Contract Novations on Existing Hedge Accounting Relationships” clarifies that a change in the counterparty to a derivative instrument (a novation) that has been designated as the hedging instrument does not, in and of itself, require designation of that hedging relationship provided that all other hedge accounting criteria continue to be met. The Company adopted ASU 2016-05 in the first quarter of 2017. The adoption of ASU 2016-05 did not have an impact to the Company’s consolidated financial statements. ASU 2016-06 “Derivatives and Hedging (Topic 815): Contingent Put and Call Options in Debt Instruments” clarifies the steps required to determine if an embedded derivative should be bifurcated from a host contract in order to resolve diversity in practice. The Company adopted of ASU 2016-06 in the first quarter of 2017. The adoption of ASU 2016-06 did not have an impact to the Company’s consolidated financial statements. ASU 2016-07 “Investments-Equity Method and Joint Ventures (Topic 323): Simplifying the Transition to the Equity Method of Accounting” removes the requirement to retroactively adopt the equity method upon an increase in the level of ownership interest or the degree of influence of an investment. Under ASU 2016-07 the equity method is only applied to the investment from the date that it qualifies. When an investment qualifies for equity method accounting, the investor should add the cost of acquiring the additional interest in the investee to the current basis of the investor’s existing interest and recognize in earnings the unrealized holding gain or loss in accumulated other comprehensive income, if the existing investment was accounted for as an available-for-sale equity security. The Company adopted ASU 2016-07 in the first quarter of 2017. The adoption of ASU 2016-07 did not have an impact to the Company’s consolidated financial statements. ASU 2016-09 “Compensation-Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting” was issued as a part of the FASB’s simplification initiative, and intends to improve the accounting for share-based payment transactions. The ASU changes several aspects of the accounting for share-based payment award transactions, including accounting for excess tax benefits and deficiencies, income statement recognition, cash flow classification, forfeitures, and tax withholding requirements. The Company adopted ASU 2016-09 in the first quarter of 2017. As of result of the adoption of ASU 2016-09, the Company now recognizes excess tax benefits on share-based payment awards in income tax provision on the Consolidated Statement of Income rather than in additional paid-in capital on the Consolidated Statement of Changes in Stockholders’ Equity. The Company recorded $73 thousand of income tax benefits for the three months ended March 31, 2017 related to excess tax benefits from share-based payment awards compared to $9 thousand in excess tax benefits on share-based payment awards that were recorded in additional paid-in capital for the three months ended March 31, 2016. Recent Accounting Pronouncements: In May 2014, the FASB issued ASU 2014-09, “Revenue from Contracts with Customers” which supersedes the revenue recognition requirements in Topic 605, Revenue Recognition. ASU 2014-09 is based on the principle that revenue is recognized to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. ASU 2014-09 also requires additional disclosure about the nature, amount, timing, and uncertainty of revenue and cash flows arising from customer contracts. ASU 2014-09 as amended by ASU 2015-14, ASU 2016-08, ASU 2016-10, ASU 2016-12 and ASU 2016-20, 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 revenue primarily consists of net interest income and noninterest income. The scope of the guidance explicitly excludes net interest income, as well as other revenues from financial instruments such as loans, leases, securities and derivatives. Certain noninterest income revenue items such as service charges on deposits accounts, gain/loss on other real estate owned sales, and other income items may be in the scope of ASU 2014-09 and how these revenue streams are recognized may change. The Company is currently in the process of evaluating the impact of ASU 2014-09 on its consolidated financial statements, but does not expect the adoption of ASU 2014-09 to have material impact on its consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842)”. The new standard establishes a right-of-use (ROU) model that requires a lessee to record a ROU asset and a lease liability on the balance sheet for all leases with terms longer than 12 months. Leases will be classified as either finance or operating, with classification affecting the pattern of expense recognition in the income statement. The new standard is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. A modified retrospective transition approach is required for lessees for capital and operating leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements, with certain practical expedients available. The Company is currently in the process of evaluating the impact of the pending adoption of the new standard 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.” ASU 2016-13 requires the measurement of all expected credit losses for financial assets held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. Financial institutions and other organizations will now use forward-looking information to better inform their credit loss estimates. ASU 2016-13 becomes effective for fiscal years and interim periods within those fiscal years beginning after December 15, 2019. The Company is currently in the process of evaluating the impact of the pending adoption of the new standard on its consolidated financial statements. In March 2017, the FASB issued ASU 2017-07, “Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost & Net Periodic Post-retirement Benefit Cost”. ASU 2017-07 was issued to to improve the presentation of net periodic pension costs and net periodic post-retirement benefit cost and requires that an employer report the service cost component in the same line item or items as other compensation costs arising from services rendered by the pertinent employees during the period. The other components of net benefit cost are required to be presented in the income statement separately from the service cost component and outside a subtotal of income from operations, if one is presented. If a separate line item or items are used to present the other components of net benefit cost, that line item or items must be appropriately described. If a separate line item or items are not used, the line item or items used in the income statement to present the other components of net benefit cost must be disclosed. ASU 2017-07 also allow only the service cost component to be eligible for capitalization when applicable (e.g., as a cost of internally manufactured inventory or a self-constructed asset). ASU 2017-07 is effective for annual period beginning after December 15, 2017, including interim periods within those annual periods. Early adoption is permitted as of the beginning of an annual period for which financial statements (interim or annual) have not been issued or made available for issuance. The Company is currently in the process of evaluating the impact of ASU 2017-07 on its consolidated financial statements, but does not expect the adoption of ASU 2017-07 to have material impact on it consolidated financial statements. In March 2017, the FASB issued ASU 2017-08, “Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities”. ASU 2017-08 was issued to amend the amortization period for certain callable debt securities held at a premium. ASU 2017-08 shortens the amortization period of premiums on certain purchased callable debt securities to the earliest call date. ASU 2017-08 affect all entities that hold investments in callable debt securities that have an amortized cost basis in excess of the amount that is repayable by the issuer at the earliest call date (that is, at a premium). ASU 2017-08 does not impact securities purchased at a discount, which continue to be amortized to maturity. ASU 2017-08 is effective for annual period beginning after December 15, 2018, including interim periods within those annual periods. Early adoption is permitted in an interim period. If an entity chooses to adopt early, any adjustments should be reflected as of the beginning of the fiscal year that includes the interim period. The adoption of ASU 2017-08 is not expected to have a material impact on the Company’s consolidated financial statements. In May 2017, the FASB issued ASU 2017-09, Compensation-Stock Compensation (Topic 718): Scope of Modification”. ASU 2017-09 was issued to provide clarity and reduce both 1) diversity in practice and 2) cost and complexity when applying the guidance in Topic 718, Compensation - Stock Compensation, to a change to the terms or conditions of a share-based payment award. Diversity in practice has arisen in part because some entities apply modification accounting under Topic 718 for modifications to terms and conditions that they consider substantive, but do not when they conclude that particular modifications are not substantive. Others apply modification accounting for any change to an award, except for changes that they consider purely administrative in nature. Still others apply modification accounting when a change to an award changes the fair value, the vesting, or the classification of the award. In practice, it appears that the evaluation of a change in fair value, vesting, or classification may be used to evaluate whether a change is substantive. ASU 2017-09 include guidance on determining which changes to the terms and conditions of share-based payment awards require an entity to apply modification accounting under Topic 718. ASU 2017-09 is effective for the annual period, and interim periods within the annual periods, beginning after December 15, 2017. Early adoption is permitted, including adoption in any interim period for: (a) public business entities for reporting periods for which financial statements have not yet been issued, and (b) all other entities for reporting periods for which financial statements have not yet been made available for issuance. ASU 2017-09 should be applied prospectively to an award modified on or after the adoption date. The Company is currently in the process of evaluating the impact of ASU 2017-09 on its consolidated financial statements, but does not expect the adoption of ASU 2017-09 to have material impact on it consolidated financial statements.

Mergers and Acquisitions

Mergers and Acquisitions	3 Months Ended
	Mar. 31, 2017
Business Combinations [Abstract]
Mergers and Acquisitions	Mergers and Acquisitions The Company applies the acquisition method of accounting for business combinations, including the merger with Wilshire under ASC 805 “Business Combinations”. Under the acquisition method of accounting, the acquiring entity in a business combination recognizes 100 percent of the assets acquired and liabilities assumed at their acquisition date fair values. Management utilizes valuation techniques appropriate for the asset or liability being measured in determining these fair values. Any excess of the purchase price over amounts allocated to assets acquired, including identifiable intangible assets, and liabilities assumed is recorded as goodwill. Where amounts allocated to assets acquired and liabilities assumed is greater than the purchase price, a bargain purchase gain is recognized. Acquisition-related costs are expensed as incurred as merger and integration expense. Pending Acquisition of U & I Financial Corp On January 23, 2017, the Company announced the signing of a definitive agreement and plan of merger (the “U & I Merger Agreement”) with U & I Financial Corporation (“U & I”) pursuant to which U & I will merge with and into Hope Bancorp with Hope Bancorp as the surviving corporation. As part of the merger, UniBank, a wholly-owned subsidiary of U & I, will merge with and into the Bank. Under the U & I Merger Agreement, at the effective time of the merger (the “Effective Time”), each outstanding share of U & I common stock will be converted into shares of the Company’s common stock based on a value of $9.50 for the U & I common stock, which value will be subject to adjustment if U & I’s financial advisory and legal fees exceed certain amounts as provided in the U & I Merger Agreement (the “Merger Consideration”). The number of shares of Company common stock to be issued for the Merger Consideration will be based on the 10-trading day, volume weighted average price of the Company’s common stock as of the closing as determined in accordance with the Merger Agreement (as so determined, the “Closing Stock Price”); provided that: (i) if the Closing Stock Price is less than $17.28832, the Company may terminate the U & I Merger Agreement unless U & I elects to accept an adjustment to the Merger Consideration through the issuance of fewer shares based on the $17.28832 instead of the lower Closing Stock Price; and (ii) if the Closing Stock Price is greater than $25.93248, U & I may terminate the U & I Merger Agreement unless the Company elects to accept an adjustment to the Merger Consideration through the issuance of additional shares based on the $25.93248 price instead of the higher Closing Stock Price. Each outstanding U & I stock option held by an U & I employee who will be retained by the Company after the Effective Time (each, a “Covered Employee”) shall cease to represent the right to acquire shares of U & I common stock and shall instead be converted automatically into an option to acquire shares of the Company’s common stock, and such assumed options will be assumed by the Company on substantially the same terms and conditions as were applicable under the corresponding U & I stock options. Each U & I stock option held by a U & I employee who will not be a Covered Employee shall become fully vested and be converted into the right to receive an amount in cash equal to the product obtained by multiplying (i) the excess, if any, of the per share Merger Consideration over the exercise price per share of such stock option by (ii) the total number of shares of U & I common stock subject to such stock option. The U & I Merger Agreement contains representations and warranties customary for transactions of this type from the Company and U & I, and each party has agreed to customary covenants, including, among others, covenants relating to the conduct of its business during the interim period between the execution of the U & I Merger Agreement and the Effective Time and, in the case of U & I, its obligation, subject to certain exceptions, to recommend that its shareholders adopt the U & I Merger Agreement and its non-solicitation obligations relating to alternative acquisition proposals. The consummation of the merger with U & I is subject to customary conditions, including receipt of regulatory approvals, receipt of the requisite approval of the shareholders of U & I, the absence of any law or order prohibiting the closing, and effectiveness of the registration statement to be filed by the Company with respect to the Company’s common stock to be issued in the merger with U & I, and the absence of the occurrence of a material adverse effect upon the Company or U & I. In addition, each party’s obligation to consummate the merger is subject to certain other conditions, including the accuracy of the representations and warranties of the other party and compliance of the other party with its covenants, in each case subject to certain materiality standards. The Company expects to close the acquisition by the end of 2017, subject to satisfaction of the conditions set forth in the U & I Merger Agreement. The U & I Merger Agreement provides certain termination rights for both the Company and U & I and further provides that a termination fee of $2 million will be payable by U & I to the Company upon termination of the U & I Merger Agreement under certain circumstances. Merger with Wilshire Bancorp, Inc. On July 29, 2016, the Company completed the merger with Wilshire Bancorp, Inc. (“Wilshire”), the holding company of Wilshire Bank. The Company merged with Wilshire in order to expand its network of branch locations and to provide enhanced products and services to our customers. Wilshire’s primary subsidiary, Wilshire Bank, previously operated thirty-five branches located in California, New York, New Jersey, Texas, Georgia, and Alabama. Approximately $4.63 billion in assets were acquired through the transaction including $3.80 billion in loans receivable and $3.81 billion in deposits. Subsequent to the merger, the Bank now operates 64 branches in nine different states throughout the United States and also has loan production offices throughout the Unites States and a representative office in Seoul, Korea. Under the terms of the Merger Agreement, Wilshire shareholders received 0.7034 shares of Hope Bancorp common stock for each share of Wilshire common stock owned. As a result, 55.5 million shares of Hope Bancorp common stock were issued to Wilshire shareholders in addition to $3 thousand that was paid for fractional shares. In addition, the Company issued Hope stock options and restricted stock in exchange for Wilshire stock options and restricted stock outstanding at July 29, 2016 under substantially the same terms that were applicable immediately prior to the merger, subject to adjustment for the exchange ratio. Total consideration for the merger was $856.3 million . The consideration paid, the assets acquired, and the liabilities assumed are summarized in the following table: (Dollars in thousands) Consideration Paid: Hope common stock issued in exchange for Wilshire common stock $ 852,939 Cash paid for fractional shares 3 Hope stock options issued in exchange Wilshire stock options 3,370 Total consideration paid $ 856,312 Assets Acquired: Cash and cash equivalents $ 100,127 Investment securities available for sale 478,938 Loans receivable 3,800,807 FRB and FHLB stock 16,539 OREO 13,173 Premises and equipment 16,812 Bank owned life insurance 25,240 Servicing assets 16,203 Low income housing tax credit investments 47,111 Core deposit intangibles 18,138 Deferred tax assets, net 18,174 Other assets 76,818 Liabilities Assumed: Deposits (3,812,367 ) Borrowings (206,282 ) Subordinated debentures (56,942 ) Other liabilities (54,751 ) Total identifiable net assets $ 497,738 Excess of consideration paid over fair value of net assets acquired (goodwill) $ 358,574 Fair values are primarily determined through the use of inputs that are not observable from market-based information. Under ASC 805-10-25-13, management may adjust the fair values of acquired assets or assumed liabilities for a period of up to one year from the date of the acquisition to reflect new information obtained about facts and circumstances that existed as of the acquisition date that, if known, would have an effect on the measurement of the amounts recognized as of that date. During the fourth quarter of 2016, the Company made a net adjustment of $1.4 million to the deferred tax assets and taxes receivable acquired from Wilshire which reduced the previous goodwill recorded from the transaction by $1.4 million . Subsequently in the first quarter of 2017, the Company made an adjustment which increased goodwill by $978 thousand consisting of a $1.7 million adjustment to OREO partially offset by a $716 thousand adjustment to deferred tax assets. Acquired Loans The fair value of loans were estimated on an individual basis based on the characteristics for each loan. A discounted cash flow analysis was used to project cash flows for each loan using assumptions for rate, remaining maturity, prepayment speeds, projected default probabilities, loss given defaults, and estimates of prevailing discount rates. At July 29, 2016, the fair value of loan acquired with deteriorated credit quality totaled $243.1 million . The outstanding principal balances and the related carrying amounts of the acquired loans included in the statement of financial condition at March 31, 2017 were $4.72 billion and $3.42 billion , respectively, for loans acquired from Wilshire. The outstanding principal balances and the related carrying amounts of the acquired loans included in the statement of financial condition at December 31, 2016 were $5.67 billion and $3.59 billion , respectively, for loans acquired from Wilshire. Acquisition-Related Expenses The following table presents acquisition-related expenses associated with the merger with Wilshire, the pending acquisition of U & I, and other previous acquisitions which were reflected in the Consolidated Statements of Income in merger and integration expense. These expenses are comprised primarily of salaries and employee benefits, professional fees, and other noninterest expense related to acquisitions. Three Months Ended March 31, 2017 2016 (Dollars in thousands) Wilshire $ 401 $ 1,183 U & I 522 — Other 24 24 Total merger and integration expenses $ 947 $ 1,207

Stock-Based Compensation

Stock-Based Compensation	3 Months Ended
	Mar. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation	Stock-Based Compensation The Company has a stock-based incentive plan (the “2007 Plan”) to award equity as form of compensation. The 2007 Plan, approved by the Company’s stockholders on May 31, 2007, was amended and restated on July 25, 2007 and again on December 1, 2011. The 2007 Plan provides for grants of stock options, stock appreciation rights (“SARs”), restricted stock, performance shares, and performance units (sometimes referred to individually or collectively as “awards”) to non-employee directors, employees, and consultants of the Company. Stock options may be either incentive stock options (“ISOs”), as defined in Section 422 of the Internal Revenue Code of 1986, as amended (the “Code”), or nonqualified stock options (“NQSOs”). The 2007 Plan gives the Company flexibility to (i) attract and retain qualified non-employee directors, executives and other key employees and consultants with appropriate equity-based awards; (ii) motivate high levels of performance; (iii) recognize employee contributions to the Company’s success; and (iv) align the interests of the 2007 Plan participants with those of the Company’s stockholders. The exercise price for shares under an ISO may not be less than 100% of fair market value on the date the award is granted under Code Section 422. Similarly, under the terms of the 2007 Plan the exercise price for SARs and NQSOs may not be less than 100% of fair market value on the date of grant. Performance units are awarded to a participant at the market price of the Company’s common stock on the date of award (after the lapse of the restriction period and the attainment of the performance criteria). No minimum exercise price is prescribed for performance shares and restricted stock awarded under the 2007 Plan. ISOs, SARs and NQSOs have vesting periods of three to five years and have 10 -year contractual terms. Restricted stock, performance shares, and performance units are granted with a restriction period of not less than one year from the grant date for performance-based awards and not more than three years from the grant date for time-based vesting of grants. Compensation expense for awards is recognized over the vesting period. The Company has another stock-based incentive plan, the 2016 Stock Incentive Plan, adopted September 1, 2016. Stock options and restricted stock were assumed from the merger with Wilshire at substantially the same terms as those prior to the merger after applying the exchange ratio of 0.7034 . These stock awards were issued to former Wilshire employees and directors through the 2016 Plan. The 2016 Plan provides for the granting of incentive stock option, stock appreciation right, and restricted stock awards to officers, employees, and consultants. The plan has 2,400,000 shares available for grant to participants. The option prices of all options granted under the 2016 Plan may not be less than 100% of the fair market value at the date of grant. All options not exercised generally expire ten years after the date of grant. Under the 2007 Plan and 2016 Plan, 1,890,563 shares were available for future grants as of March 31, 2017 . The total shares reserved for issuance will serve as the underlying value for all equity awards under the 2007 Plan and 2016 Plan. With the exception of the shares underlying stock options and restricted stock awards, the board of directors may choose to settle the awards by paying the equivalent cash value or by delivering the appropriate number of shares. The following is a summary of stock option activity under the 2007 Plan and 2016 Plan for the three months ended March 31, 2017 : Number of Shares Weighted- Average Exercise Price Per Share Weighted- Average Remaining Contractual Life (Years) Aggregate Intrinsic Value (Dollars in thousands) Outstanding - January 1, 2017 1,624,227 $ 15.30 Granted — — Exercised (21,307 ) 11.07 Expired (1,530 ) 15.34 Forfeited — — Outstanding - March 31, 2017 1,601,390 $ 15.36 6.40 $ 6,861 Options exercisable - March 31, 2017 866,548 $ 14.02 4.13 $ 5,218 The following is a summary of restricted stock and performance unit activity under the 2007 Plan and 2016 Plan for the three months ended March 31, 2017 : Number of Shares Weighted- Average Grant Date Fair Value Outstanding - January 1, 2017 403,658 $ 16.17 Granted — — Vested (36,407 ) 15.31 Forfeited (3,372 ) 14.75 Outstanding - March 31, 2017 363,879 $ 16.27 The total fair value of restricted performance units vested for the three months ended March 31, 2017 and 2016 was $735 thousand and $492 thousand , respectively. The amount charged against income related to stock-based payment arrangements was $746 thousand and $22 thousand for the three months ended March 31, 2017 and 2016 , respectively. The income tax benefit recognized was approximately $290 thousand and $9 thousand for the three months ended March 31, 2017 and 2016 , respectively. At March 31, 2017 , the unrecognized compensation expense related to non-vested stock option grants was $1.8 million which is expected to be recognized over a weighted average vesting period of 3.19 years. Unrecognized compensation expense related to non-vested restricted stock and performance units was $4.6 million which is expected to be recognized over a weighted average vesting period of 2.69 . During the first quarter of 2017 the Company adopted ASU 2016-09, “Compensation - Stock Compensation: Improvements to Employee Share-Based Payment Accounting”. With the adoption of ASU 2016-09 all of the Company’s excess tax benefits on share-based payment awards were recorded in income tax provision on the Consolidated Statements of Income for the three months ended March 31, 2017 .

Earnings Per Share ("EPS")

Earnings Per Share ("EPS")	3 Months Ended
	Mar. 31, 2017
Earnings Per Share [Abstract]
Earnings Per Share ("EPS")	Earnings Per Share (“EPS”) Basic EPS does not reflect the possibility of dilution that could result from the issuance of additional shares of common stock upon exercise or conversion of outstanding equity awards, and is computed by dividing net income by the weighted average number of common shares outstanding for the period. Diluted EPS reflects the potential dilution that could occur if stock options or other contracts to issue common stock were exercised or converted to common stock that would then share in our earnings. For the three months ended March 31, 2017 , stock options and restricted shares awards for 236,878 shares of common stock were excluded in computing diluted earnings per common share because they were anti-dilutive. Stock options and restricted shares awards for 443,956 shares of common stock were excluded in computing diluted earnings per common share because they were anti-dilutive for the three months ended March 31, 2016 . Additionally, warrants issued pursuant to the Company’s participation in the U.S. Treasury’s TARP Capital Purchase Plan, to purchase 19,963 shares and 19,420 shares of common stock were anti-dilutive and excluded for the three months ended March 31, 2017 and 2016 , respectively. The following tables show the computation of basic and diluted EPS for the three months ended March 31, 2017 and 2016 . Three Months Ended March 31, 2017 2016 Net Income (Numerator) Weighted-Average Shares (Denominator) Per Share (Amount) Net Income (Numerator) Weighted-Average Shares Per Share (Amount) (Dollars in thousands, except share and per share data) Basic EPS - common stock $ 36,210 135,248,018 $ 0.27 $ 23,623 79,583,188 $ 0.30 Effect of dilutive securities: Stock options and restricted stock 520,627 30,057 Diluted EPS - common stock $ 36,210 135,768,645 $ 0.27 $ 23,623 79,613,245 $ 0.30

Securities Available for Sale

Securities Available for Sale	3 Months Ended
	Mar. 31, 2017
Available-for-sale Securities [Abstract]
Securities Available for Sale	Securities Available for Sale The following is a summary of securities available for sale as of the dates indicated: At March 31, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value (Dollars in thousands) Debt securities: U.S. Government agency and U.S. Government sponsored enterprises Debt securities $ 10,002 $ — $ (4 ) $ 9,998 Collateralized mortgage obligations (residential) 736,000 406 (9,787 ) 726,619 Mortgage-backed securities (residential) 744,654 1,252 (13,214 ) 732,692 Corporate securities 4,564 — (251 ) 4,313 Municipal securities 97,689 609 (1,044 ) 97,254 Total debt securities 1,592,909 2,267 (24,300 ) 1,570,876 Mutual funds 13,425 18 (373 ) 13,070 Total investment securities available for sale $ 1,606,334 $ 2,285 $ (24,673 ) $ 1,583,946 At December 31, 2016 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value (Dollars in thousands) Debt securities: U.S. Government agency and U.S. Government sponsored enterprises Debt securities $ 12,005 $ 3 $ — $ 12,008 Collateralized mortgage obligations (residential) 715,981 349 (10,663 ) 705,667 Mortgage-backed securities (residential) 741,304 1,132 (14,395 ) 728,041 Corporate securities 11,576 — (449 ) 11,127 Municipal securities 88,018 358 (1,537 ) 86,839 Total debt securities 1,568,884 1,842 (27,044 ) 1,543,682 Mutual funds 13,425 — (367 ) 13,058 Total investment securities available for sale $ 1,582,309 $ 1,842 $ (27,411 ) $ 1,556,740 As of March 31, 2017 and December 31, 2016 , there were no holdings of securities of any one issuer, other than the U.S. Government and its agencies, in an amount greater than 10% of stockholders’ equity. For the three months ended March 31, 2017 and 2016 , $3.2 million and $15.6 million , respectively, of unrealized gains were included in accumulated other comprehensive income (loss). No investments were sold during the three months ended March 31, 2017 and 2016 . The amortized cost and estimated fair value of investment securities at March 31, 2017 , by contractual maturity, are shown below. Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. Securities not due at a single maturity date are shown separately. Amortized Cost Estimated Fair Value (Dollars in thousands) Available for sale: Due within one year $ 10,724 $ 10,725 Due after one year through five years 7,472 7,630 Due after five years through ten years 40,905 40,891 Due after ten years 53,154 52,319 U.S. Government agency and U.S. Government sponsored enterprises Collateralized mortgage obligations (residential) 736,000 726,619 Mortgage-backed securities (residential) 744,654 732,692 Mutual funds 13,425 13,070 Total $ 1,606,334 $ 1,583,946 Securities with carrying values of approximately $366.1 million and $382.1 million at March 31, 2017 and December 31, 2016 , respectively, were pledged to secure public deposits, various borrowings and for other purposes as required or permitted by law. The following tables show our investments’ gross unrealized losses and estimated fair value, aggregated by investment category and the length of time that the individual securities have been in a continuous unrealized loss position as of the dates indicated. As of March 31, 2017 Less than 12 months 12 months or longer Total Description of Securities Number of Securities Fair Value Gross Unrealized Losses Number of Securities Fair Value Gross Unrealized Losses Number of Securities Fair Value Gross Unrealized Losses (Dollars in thousands) Debt securities* 3 $ 9,998 $ (4 ) — $ — $ — 3 $ 9,998 $ (4 ) Collateralized mortgage obligations (residential)* 67 624,327 (8,668 ) 4 34,843 (1,119 ) 71 659,170 (9,787 ) Mortgage-backed securities (residential)* 59 606,378 (13,214 ) — — — 59 606,378 (13,214 ) Corporate securities — — — 1 4,313 (251 ) 1 4,313 (251 ) Municipal securities 54 50,447 (1,018 ) 1 509 (26 ) 55 50,956 (1,044 ) Mutual funds 3 11,590 (373 ) — — — 3 11,590 (373 ) Total 186 $ 1,302,740 $ (23,277 ) 6 $ 39,665 $ (1,396 ) 192 $ 1,342,405 $ (24,673 ) __________________________________ * Investments in U.S. Government agency and U.S. Government sponsored enterprises As of December 31, 2016 Less than 12 months 12 months or longer Total Description of Securities Number of Securities Fair Value Gross Unrealized Losses Number of Securities Fair Value Gross Unrealized Losses Number of Securities Fair Value Gross Unrealized Losses (Dollars in thousands) Collateralized mortgage obligations (residential)* 66 $ 615,803 $ (9,459 ) 4 $ 36,333 $ (1,204 ) 70 $ 652,136 $ (10,663 ) Mortgage-backed securities (residential)* 57 622,797 (14,395 ) — — — 57 622,797 (14,395 ) Corporate securities 1 7,014 (2 ) 1 4,113 (447 ) 2 11,127 (449 ) Municipal securities 95 69,331 (1,537 ) — — — 95 69,331 (1,537 ) Mutual funds 3 13,058 (367 ) — — — 3 13,058 (367 ) Total 222 $ 1,328,003 $ (25,760 ) 5 $ 40,446 $ (1,651 ) 227 $ 1,368,449 $ (27,411 ) __________________________________ * Investments in U.S. Government agency and U.S. Government sponsored enterprises The Company evaluates securities for other-than-temporary-impairment (“OTTI”) on at least a quarterly basis, and more frequently when economic or market concerns warrant such evaluation. Consideration is given to the financial condition and near-term prospects of the issuer, the length of time and the extent to which the fair values of the securities have been less than the cost of the securities, and management’s intention to sell, or whether it is more likely than not that management will be required to sell a security in an unrealized loss position before recovery of its amortized cost basis. In analyzing an issuer’s financial condition, the Company considers, among other considerations, whether the securities are issued by the federal government or its agencies, whether downgrades by bond rating agencies have occurred, and the results of reviews of the issuer’s financial condition. The Company has certain corporate securities, collateralized mortgage obligations, and municipal securities that were in a continuous unrealized loss position for twelve months or longer as of March 31, 2017 . The corporate securities at March 31, 2017 had a total amortized cost of $4.6 million and an unrealized loss of $251 thousand at March 31, 2017 . These corporate securities are scheduled to mature in May 2047. These securities were rated investment grade and there were no credit quality concerns with the issuer. The collateralized mortgage obligations in a continuous loss position for twelve months or longer had an unrealized loss of $1.1 million at March 31, 2017 . These securities were issued by U.S. Government agency and U.S. Government sponsored enterprises and have high credit ratings of “AA” grade or better. Interest on the corporate securities and the U.S. Government agency and U.S. Government sponsored enterprise investments have been paid as agreed, and management believes this will continue in the future and that the securities will be repaid in full as scheduled. Municipal securities that were in a continuous loss position for twelve months or longer had an unrealized loss of $26 thousand at March 31, 2017 . The market value declines for these securities were primarily due to movements in interest rates and are not reflective of management’s expectations of the Company’s ability to fully recover these investments, which may be at maturity. For these reasons, no OTTI was recognized on the corporate and municipal securities and the U.S. Government agency and U.S. Government sponsored collateralized mortgage obligations that were in an unrealized loss position at March 31, 2017 . The Company considers the losses on the investments in unrealized loss positions at March 31, 2017 to be temporary based on: 1) the likelihood of recovery; 2) the information relative to the extent and duration of the decline in market value; and 3) the Company’s intention not to sell, and management’s determination that it is more likely than not that the Company will not be required to sell a security in an unrealized loss position before recovery of its amortized cost basis.

Loans Receivable and Allowance

Loans Receivable and Allowance for Loan Losses	3 Months Ended
	Mar. 31, 2017
Receivables [Abstract]
Loans Receivable and Allowance for Loan Losses	7. Loans Receivable and Allowance for Loan Losses The following is a summary of loans receivable by major category: March 31, 2017 December 31, 2016 (Dollars in thousands) Loan portfolio composition Real estate loans: Residential $ 58,166 $ 57,884 Commercial 7,948,844 7,842,573 Construction 284,178 254,113 Total real estate loans 8,291,188 8,154,570 Commercial business 1,696,895 1,832,021 Trade finance 143,298 154,928 Consumer and other 420,169 403,470 Total loans outstanding 10,551,550 10,544,989 Deferred loan fees, net (1,883 ) (1,657 ) Loans receivable 10,549,667 10,543,332 Allowance for loan losses (78,659 ) (79,343 ) Loans receivable, net of allowance for loan losses $ 10,471,008 $ 10,463,989 The loan portfolio is made up of four segments: real estate loans, commercial business, trade finance and consumer and other. These segments are further segregated between loans accounted for under the amortized cost method (“Legacy Loans”) and previously acquired loans that were originally recorded at fair value with no carryover of the related pre-acquisition allowance for loan losses (“Acquired Loans”). Acquired Loans are further segregated between purchased credit impaired loans (loans with credit deterioration on the acquisition date and accounted for under ASC 310-30, or “PCIs”) and Acquired Performing Loans (loans that were pass graded on the acquisition date and the fair value adjustment is amortized over the contractual life under ASC 310-20, or “non-PCI loans”). The following table presents changes in the accretable discount on the PCI loans for the three months ended March 31, 2017 and 2016 : Three Months Ended March 31, 2017 2016 (Dollars in thousands) Balance at beginning of period $ 38,591 $ 23,777 Accretion (5,348 ) (3,029 ) Reclassification from nonaccretable difference 18,408 1,349 Balance at end of period $ 51,651 $ 22,097 On the acquisition date, the amount by which the undiscounted expected cash flows exceed the estimated fair value of the PCI loans is the “accretable yield.” The accretable yield is then measured at each financial reporting date and represents the difference between the remaining undiscounted expected cash flows and the current carrying value of the loans. The accretable yield will change from period to period due to the following: 1) estimates of the remaining life of acquired loans will affect the amount of future interest income; 2) indices for variable rates of interest on PCI loans may change; and 3) estimates of the amount of the contractual principal and interest that will not be collected (nonaccretable difference) may change. The following tables detail the activity in the allowance for loan losses by portfolio segment for the three months ended March 31, 2017 and 2016 : Legacy Loans Acquired Loans Total Real Estate Commercial Business Trade Finance Consumer and Other Real Estate Commercial Business Trade Finance Consumer and Other (Dollars in thousands) Three Months Ended March 31, 2017 Balance, beginning of period $ 38,956 $ 23,430 $ 1,897 $ 2,116 $ 12,791 $ 117 $ — $ 36 $ 79,343 Provision (credit) for loan losses 6,106 (2,884 ) 303 184 975 748 187 (19 ) 5,600 Loans charged off (1,154 ) (3,190 ) (1,576 ) (279 ) (336 ) (70 ) — — (6,605 ) Recoveries 21 123 — 1 25 149 — 2 321 Balance, end of period $ 43,929 $ 17,479 $ 624 $ 2,022 $ 13,455 $ 944 $ 187 $ 19 $ 78,659 Legacy Loans Acquired Loans Total Real Estate Commercial Business Trade Finance Consumer and Other Real Estate Commercial Business Trade Finance Consumer and Other (Dollars in thousands) Three Months Ended March 31, 2016 Balance, beginning of period $ 42,829 $ 16,332 $ 3,592 $ 556 $ 12,823 $ 214 $ — $ 62 $ 76,408 Provision (credit) for loan losses (1,218 ) 3,147 (1,507 ) 276 (82 ) (112 ) — (4 ) 500 Loans charged off (19 ) (621 ) — (65 ) (116 ) — — — (821 ) Recoveries 523 190 — 1 1 52 — 2 769 Balance, end of period $ 42,115 $ 19,048 $ 2,085 $ 768 $ 12,626 $ 154 $ — $ 60 $ 76,856 The following tables break out the allowance for loan losses and the recorded investment of loans outstanding by individually impaired, general valuation, and PCI impairment, by portfolio segment, at March 31, 2017 and December 31, 2016 : March 31, 2017 Legacy Loans Acquired Loans Total Real Estate Commercial Business Trade Finance Consumer and Other Real Estate Commercial Business Trade Finance Consumer and Other (Dollars in thousands) Allowance for loan losses: Individually evaluated for impairment $ 2,530 $ 2,357 $ — $ 40 $ 30 $ 122 $ — $ — $ 5,079 Collectively evaluated for impairment 41,399 15,122 624 1,982 1,289 822 187 19 61,444 PCI loans — — — — 12,136 — — — 12,136 Total $ 43,929 $ 17,479 $ 624 $ 2,022 $ 13,455 $ 944 $ 187 $ 19 $ 78,659 Loans outstanding: Individually evaluated for impairment $ 75,377 $ 28,421 $ 4,450 $ 715 $ 19,325 $ 1,019 $ — $ 272 $ 129,579 Collectively evaluated for impairment 5,474,703 1,065,952 59,131 206,933 2,538,765 541,586 76,541 198,095 10,161,706 PCI loans — — — — 183,018 59,917 3,176 14,154 260,265 Total $ 5,550,080 $ 1,094,373 $ 63,581 $ 207,648 $ 2,741,108 $ 602,522 $ 79,717 $ 212,521 $ 10,551,550 December 31, 2016 Legacy Loans Acquired Loans Total Real Estate Commercial Business Trade Finance Consumer and Other Real Estate Commercial Business Trade Finance Consumer and Other (Dollars in thousands) Allowance for loan losses: Individually evaluated for impairment $ 1,889 $ 4,420 $ 864 $ 50 $ 113 $ 73 $ — $ — $ 7,409 Collectively evaluated for impairment 37,067 19,010 1,033 2,066 548 44 — 36 59,804 PCI loans — — — — 12,130 — — — 12,130 Total $ 38,956 $ 23,430 $ 1,897 $ 2,116 $ 12,791 $ 117 $ — $ 36 $ 79,343 Loans outstanding: Individually evaluated for impairment $ 74,085 $ 34,783 $ 6,029 $ 733 $ 23,865 $ 435 $ — $ 431 $ 140,361 Collectively evaluated for impairment 5,271,262 1,079,348 75,365 179,961 2,597,200 650,710 70,535 206,802 10,131,183 PCI loans — — — — 188,158 66,745 2,999 15,543 273,445 Total $ 5,345,347 $ 1,114,131 $ 81,394 $ 180,694 $ 2,809,223 $ 717,890 $ 73,534 $ 222,776 $ 10,544,989 As of March 31, 2017 and December 31, 2016 , the reserve for unfunded commitments recorded in other liabilities was $ 3.4 million and $3.2 million , respectively. For the three months ended March 31, 2017 and 2016 , the recognized provision (credit) for unfunded commitments recorded in credit related expense was $241 thousand and $(570) thousand , respectively. The recorded investment of individually impaired loans was as follows: March 31, 2017 December 31, 2016 (Dollars in thousands) With allocated specific allowance Without charge off $ 51,944 $ 59,638 With charge off 196 1,120 With no allocated specific allowance Without charge off 70,466 76,775 With charge off 6,973 2,828 Specific allowance on impaired loans (5,079 ) (7,409 ) Impaired loans, net of specific allowance $ 124,500 $ 132,952 The following tables detail the recorded investment of impaired loans (Legacy Loans and Acquired Loans that became impaired subsequent to being originated and acquired, respectfully) as of March 31, 2017 and December 31, 2016 and for the three months ended March 31, 2017 and 2016 . Loans with no related allowance are believed by management to be adequately collateralized. As of March 31, 2017 As of December 31, 2016 Total Impaired Loans Recorded Investment* Unpaid Contractual Principal Balance Related Allowance Recorded Investment* Unpaid Contractual Principal Balance Related Allowance (Dollars in thousands) With related allowance: Real estate—residential $ — $ — $ — $ — $ — $ — Real estate—commercial Retail 581 581 9 2,095 2,384 90 Hotel & motel 6,395 6,433 403 6,387 6,387 337 Gas station & car wash — — — 215 228 41 Mixed use 250 2,101 3 206 732 27 Industrial & warehouse 2,882 2,882 2 530 530 — Other 22,412 22,657 2,143 22,580 22,825 1,507 Real estate—construction — — — — — — Commercial business 19,538 19,698 2,479 26,543 27,161 4,493 Trade finance — — — 2,111 2,156 864 Consumer and other 82 82 40 91 91 50 Subtotal $ 52,140 $ 54,434 $ 5,079 $ 60,758 $ 62,494 $ 7,409 With no related allowance: Real estate—residential $ 1,465 $ 1,465 $ — $ 3,562 $ 3,562 $ — Real estate—commercial Retail 16,752 17,724 — 12,753 13,290 — Hotel & motel 6,273 12,221 — 6,122 11,735 — Gas station & car wash 4,160 6,634 — 5,043 7,449 — Mixed use 6,530 7,614 — 7,303 7,822 — Industrial & warehouse 8,498 8,574 — 9,673 9,748 — Other 15,648 16,911 — 20,181 21,492 — Real estate—construction 2,856 2,996 — 1,300 1,441 — Commercial business 9,902 13,509 — 8,675 9,472 — Trade finance 4,450 4,450 — 3,918 3,918 — Consumer and other 905 923 — 1,073 1,136 — Subtotal $ 77,439 $ 93,021 $ — $ 79,603 $ 91,065 $ — Total $ 129,579 $ 147,455 $ 5,079 $ 140,361 $ 153,559 $ 7,409 __________________________________ * Unpaid contractual principal balance less charge offs, interest collected applied to principal if on nonaccrual and purchase discounts. For the Three Months Ended March 31, 2017 For the Three Months Ended March 31, 2016 Total Impaired Loans Average Recorded Investment* Interest Income Recognized during Impairment Average Recorded Investment* Interest Income Recognized during Impairment (Dollars in thousands) With related allowance: Real estate—residential $ — $ — $ — $ — Real estate—commercial Retail 1,338 4 1,712 — Hotel & motel 6,391 43 4,611 57 Gas station & car wash 108 — 1,050 — Mixed use 228 2 563 2 Industrial & warehouse 1,706 32 560 6 Other 22,496 253 24,462 275 Real estate—construction — — — — Commercial business 23,041 195 35,742 265 Trade finance 1,055 — 10,314 94 Consumer and other 87 1 128 1 Subtotal $ 56,450 $ 530 $ 79,142 $ 700 With no related allowance: Real estate—residential $ 2,513 $ 28 $ — $ — Real estate—commercial Retail 14,752 159 11,105 100 Hotel & motel 6,198 7 7,849 22 Gas station & car wash 4,602 10 4,665 34 Mixed use 6,916 63 2,364 12 Industrial & warehouse 9,086 75 9,888 85 Other 17,915 130 12,712 90 Real estate—construction 2,078 20 1,355 — Commercial business 9,289 30 8,950 41 Trade finance 4,184 51 — — Consumer and other 989 7 1,228 7 Subtotal $ 78,522 $ 580 $ 60,116 $ 391 Total $ 134,972 $ 1,110 $ 139,258 $ 1,091 __________________________________ * Unpaid contractual principal balance less charge offs, interest collected applied to principal if on nonaccrual and purchase discounts. As of March 31, 2017 As of December 31, 2016 Impaired Acquired Loans Recorded Investment* Unpaid Contractual Principal Balance Related Allowance Recorded Investment* Unpaid Contractual Principal Balance Related Allowance (Dollars in thousands) With related allowance: Real estate—residential $ — $ — $ — $ — $ — $ — Real estate—commercial Retail 311 311 — 1,826 2,114 85 Hotel & motel 92 89 2 — — — Gas station & car wash — — — — — — Mixed use 250 2,101 3 136 136 2 Industrial & warehouse — — — — — — Other 333 337 25 337 341 26 Real estate—construction — — — — — — Commercial business 774 828 122 294 339 73 Trade finance — — — — — — Consumer and other — — — — — — Subtotal $ 1,760 $ 3,666 $ 152 $ 2,593 $ 2,930 $ 186 With no related allowance: Real estate—residential $ — $ — $ — $ 679 $ 679 $ — Real estate—commercial Retail 4,351 4,831 — 3,148 3,214 — Hotel & motel 4,840 7,352 — 4,767 7,171 — Gas station & car wash 618 804 — 1,568 1,815 — Mixed use 5,283 5,510 — 5,315 5,551 — Industrial & warehouse 65 65 — 66 66 — Other 3,182 3,853 — 6,023 6,752 — Real estate—construction — — — — — — Commercial business 245 313 — 141 386 — Trade finance — — — — — — Consumer and other 272 281 — 431 484 — Subtotal $ 18,856 $ 23,009 $ — $ 22,138 $ 26,118 $ — Total $ 20,616 $ 26,675 $ 152 $ 24,731 $ 29,048 $ 186 __________________________________ * Unpaid contractual principal balance less charge offs, interest collected applied to principal if on nonaccrual and purchase discounts. For the Three Months Ended March 31, 2017 For the Three Months Ended March 31, 2016 Impaired Acquired Loans Average Recorded Investment* Interest Income Recognized during Impairment Average Recorded Investment* Interest Income Recognized during Impairment (Dollars in thousands) With related allowance: Real estate—residential $ — $ — $ — $ — Real estate—commercial Retail 1,068 4 1,169 — Hotel & motel 46 — — — Gas station & car wash — — 509 — Mixed use 193 2 493 2 Industrial & warehouse — — — — Other 335 4 305 4 Real estate—construction — — — — Commercial business 534 5 576 3 Trade finance — — — — Consumer and other — — — — Subtotal $ 2,176 $ 15 $ 3,052 $ 9 With no related allowance: Real estate—residential $ 339 $ — $ — $ — Real estate—commercial Retail 3,750 31 2,571 26 Hotel & motel 4,803 4 6,882 17 Gas station & car wash 1,093 10 1,392 25 Mixed use 5,299 63 273 3 Industrial & warehouse 66 1 1,111 2 Other 4,603 13 3,826 14 Real estate—construction — — — — Commercial business 193 1 672 8 Trade finance — — — — Consumer and other 351 2 557 2 Subtotal $ 20,497 $ 125 $ 17,284 $ 97 Total $ 22,673 $ 140 $ 20,336 $ 106 __________________________________ * Unpaid contractual principal balance less charge offs, interest collected applied to principal if on nonaccrual and purchase discounts. Generally, loans are placed on nonaccrual status if the principal and/or interest payments become 90 days past due and/or management deems the collectibility of the principal and/or interest to be in question, as well as when required by regulatory requirements. Loans to customers whose financial condition has deteriorated are considered for nonaccrual status whether or not the loan is 90 days or more past due. Generally, payments received on nonaccrual loans are recorded as principal reductions. Loans are returned to accrual status only when all the principal and interest amounts contractually due are brought current and future payments are reasonably assured. The Company did not recognize any cash basis interest income for the three months ended March 31, 2017 or 2016 . The following tables present the recorded investment of past due loans by the number of days past due as of March 31, 2017 and December 31, 2016 by class of loans: As of March 31, 2017 Past Due and Accruing 30-59 Days 60-89 Days 90 or More Days Total Nonaccrual Loans (2) Total Delinquent and Nonaccrual Loans (Dollars in thousands) Legacy Loans: Real estate—residential $ — $ — $ — $ — $ — $ — Real estate—commercial Retail 938 — — 938 2,657 3,595 Hotel & motel 3,341 1,187 — 4,528 4,216 8,744 Gas station & car wash 947 — — 947 3,542 4,489 Mixed use — — — — 1,247 1,247 Industrial & warehouse 57 1,028 — 1,085 1,922 3,007 Other 4,046 1,031 — 5,077 3,114 8,191 Real estate—construction — — — — 1,300 1,300 Commercial business 640 666 — 1,306 9,155 10,461 Trade finance — — — — 528 528 Consumer and other 229 66 275 570 228 798 Subtotal $ 10,198 $ 3,978 $ 275 $ 14,451 $ 27,909 $ 42,360 Acquired Loans: (1) Real estate—residential $ — $ — $ — $ — $ — $ — Real estate—commercial Retail 1,156 653 — 1,809 1,578 3,387 Hotel & motel 1,546 — — 1,546 4,668 6,214 Gas station & car wash — — — — 47 47 Mixed use — 354 — 354 162 516 Industrial & warehouse 1,406 — — 1,406 — 1,406 Other 97 — — 97 2,096 2,193 Real estate—construction — — — — — — Commercial business 360 — — 360 435 795 Trade finance — — — — — — Consumer and other 684 — — 684 114 798 Subtotal $ 5,249 $ 1,007 $ — $ 6,256 $ 9,100 $ 15,356 TOTAL $ 15,447 $ 4,985 $ 275 $ 20,707 $ 37,009 $ 57,716 __________________________________ (1) Acquired Loans exclude PCI loans. (2) Nonaccrual loans exclude guaranteed portion of delinquent SBA loans that are in liquidation totaling $15.2 million . Includes nonaccrual loans less than 30 days past due totaling $15.6 million . As of December 31, 2016 Past Due and Accruing 30-59 Days 60-89 Days 90 or More Days Total Nonaccrual Loans (2) Total Delinquent and Nonaccrual Loans (Dollars in thousands) Legacy Loans: Real estate—residential $ — $ — $ — $ — $ — $ — Real estate—commercial Retail 480 — — 480 3,672 4,152 Hotel & motel 1,836 3,137 — 4,973 1,392 6,365 Gas station & car wash 362 — — 362 3,690 4,052 Mixed use — — — — 1,305 1,305 Industrial & warehouse — 697 — 697 1,922 2,619 Other 2,871 — — 2,871 4,007 6,878 Real estate—construction — 1,513 — 1,513 1,300 2,813 Commercial business 558 815 — 1,373 9,371 10,744 Trade finance — 500 — 500 2,056 2,556 Consumer and other 146 58 305 509 229 738 Subtotal $ 6,253 $ 6,720 $ 305 $ 13,278 $ 28,944 $ 42,222 Acquired Loans: (1) Real estate—residential $ — $ — $ — $ — $ 679 $ 679 Real estate—commercial Retail 1,611 — — 1,611 1,871 3,482 Hotel & motel 95 — — 95 4,501 4,596 Gas station & car wash 68 340 — 408 993 1,401 Mixed use — — — — 48 48 Industrial & warehouse 257 — — 257 — 257 Other 350 — — 350 2,144 2,494 Real estate—construction — — — — — — Commercial business 1,303 684 — 1,987 345 2,332 Trade finance — — — — — — Consumer and other 331 25 — 356 549 905 Subtotal $ 4,015 $ 1,049 $ — $ 5,064 $ 11,130 $ 16,194 TOTAL $ 10,268 $ 7,769 $ 305 $ 18,342 $ 40,074 $ 58,416 __________________________________ (1) Acquired Loans exclude PCI loans. (2) Nonaccrual loans exclude guaranteed portion of delinquent SBA loans that are in liquidation totaling $15.9 million . Includes nonaccrual loans less than 30 days past due totaling $18.3 million . Loans accounted for under ASC 310-30 are generally considered accruing and performing loans and the accretable discount is accreted to interest income over the estimated life of the loan when cash flows are reasonably estimable. Accordingly, PCI loans that are contractually past due are still considered to be accruing and performing loans. The loans may be classified as nonaccrual if the timing and amount of future cash flows is not reasonably estimable. The Company categorizes loans into risk categories based on relevant information about the ability of borrowers to service their debt, including, but not limited to, current financial information, historical payment experience, credit documentation, public information, and current economic trends. The Company analyzes loans individually by classifying the loans as to credit risk. This analysis includes all non-homogeneous loans. This analysis is performed at least on a quarterly basis. The definitions for risk ratings are as follows: • Pass: Loans that meet a preponderance or more of the Company’s underwriting criteria and evidence an acceptable level of risk. • Special Mention: Loans that have potential weaknesses that deserves management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the loan or of the institution’s credit position at some future date. • Substandard: Loans that are inadequately protected by the current net worth and paying capacity of the borrower or by the collateral pledged, if any. Loans in this classification have a well-defined weakness or weaknesses that jeopardize the repayment of the debt. They are characterized by the distinct possibility that the institution will sustain some loss if the deficiencies are not corrected. • Doubtful: Loans that have all the weaknesses inherent in those classified as substandard, with the added characteristic that the weaknesses make collection or repayment in full, on the basis of currently existing facts, conditions, and values, highly questionable and improbable. The following tables present the recorded investment of risk ratings for Legacy and Acquired Loans as of March 31, 2017 and December 31, 2016 by class of loans: As of March 31, 2017 Pass Special Mention Substandard Doubtful Total (Dollars in thousands) Legacy Loans: Real estate—residential $ 36,883 $ 219 $ 1,465 $ — $ 38,567 Real estate—commercial Retail 1,373,943 19,057 17,634 — 1,410,634 Hotel & motel 1,171,476 15,238 9,010 — 1,195,724 Gas station & car wash 637,755 10,280 3,542 — 651,577 Mixed use 396,870 957 1,408 — 399,235 Industrial & warehouse 515,640 21,839 14,970 — 552,449 Other 1,050,557 22,967 35,864 — 1,109,388 Real estate—construction 175,895 13,755 2,856 — 192,506 Commercial business 1,000,577 18,973 74,590 233 1,094,373 Trade finance 53,839 4,142 5,600 — 63,581 Consumer and other 206,835 4 809 — 207,648 Subtotal $ 6,620,270 $ 127,431 $ 167,748 $ 233 $ 6,915,682 Acquired Loans: Real estate—residential $ 19,330 $ 269 $ — $ — $ 19,599 Real estate—commercial Retail 750,436 11,996 17,642 — 780,074 Hotel & motel 316,099 11,955 17,562 — 345,616 Gas station & car wash 243,494 8,918 9,190 — 261,602 Mixed use 117,453 3,578 11,599 8 132,638 Industrial & warehouse 314,060 14,694 16,453 298 345,505 Other 712,484 28,529 23,389 — 764,402 Real estate—construction 91,672 — — — 91,672 Commercial business 549,059 17,666 35,700 97 602,522 Trade finance 76,541 17 3,159 — 79,717 Consumer and other 204,689 914 5,270 1,648 212,521 Subtotal $ 3,395,317 $ 98,536 $ 139,964 $ 2,051 $ 3,635,868 Total $ 10,015,587 $ 225,967 $ 307,712 $ 2,284 $ 10,551,550 As of December 31, 2016 Pass Special Mention Substandard Doubtful Total (Dollars in thousands) Legacy Loans: Real estate—residential $ 34,283 $ 223 $ 2,883 $ — $ 37,389 Real estate—commercial Retail 1,303,452 18,929 15,430 — 1,337,811 Hotel & motel 1,187,709 12,763 9,026 — 1,209,498 Gas station & car wash 643,282 7,259 3,690 — 654,231 Mixed use 375,312 — 1,467 — 376,779 Industrial & warehouse 478,528 29,830 13,745 — 522,103 Other 969,024 22,220 41,017 — 1,032,261 Real estate—construction 159,230 14,745 1,300 — 175,275 Commercial business 1,032,232 15,919 65,885 95 1,114,131 Trade finance 68,051 5,673 7,670 — 81,394 Consumer and other 179,864 1 829 — 180,694 Subtotal $ 6,430,967 $ 127,562 $ 162,942 $ 95 $ 6,721,566 Acquired Loans: Real estate—residential $ 18,007 $ 1,809 $ 679 $ — $ 20,495 Real estate—commercial Retail 772,465 9,860 21,110 — 803,435 Hotel & motel 328,396 5,419 18,233 — 352,048 Gas station & car wash 249,379 8,437 11,338 — 269,154 Mixed use 118,643 3,105 12,505 8 134,261 Industrial & warehouse 321,040 31,819 9,048 315 362,222 Other 736,385 23,286 29,099 — 788,770 Real estate—construction 78,838 — — — 78,838 Commercial business 649,186 31,340 37,265 99 717,890 Trade finance 70,535 61 2,938 — 73,534 Consumer and other 214,437 958 5,949 1,432 222,776 Subtotal $ 3,557,311 $ 116,094 $ 148,164 $ 1,854 $ 3,823,423 Total $ 9,988,278 $ 243,656 $ 311,106 $ 1,949 $ 10,544,989 The Company reclassifies loans held for investment to loans held for sale in the event that the Company plans to sell loans that were originated with the intent to hold to maturity. Loans transferred from held to investment to held for sale are carried at the lower of cost or fair value. The breakdown of loans by type that were reclassified from held to investment to held for sale for the three months ended March 31, 2017 and 2016 is presented in the following table: Three Months Ended March 31, 2017 2016 Transfer of loans receivable to held for sale (Dollars in thousands) Real estate - commercial $ 8,699 $ — Commercial business 752 — Consumer — 450 Total $ 9,451 $ 450 The adequacy of the allowance for loan losses is determined by management based upon an evaluation and review of the credit quality of the loan portfolio, consideration of historical loan loss experience, relevant internal and external factors that affect the collection of a loan, and other pertinent factors. Migration analysis is a formula methodology derived from the Bank’s actual historical net charge off experience for each loan class (type) or pool and risk grade. The migration analysis is centered on the Bank’s internal credit risk rating system. Management’s internal loan review and external contracted credit review examinations are used to determine and validate loan risk grades. This credit review system takes into consideration factors such as: borrower’s background and experience; historical and current financial condition; credit history and payment performance; economic conditions and their impact on various industries; type, fair value and volatility of the fair value of collateral; lien position; and the financial strength of any guarantors. A general loan loss allowance is provided on loans not specifically identified as impaired (“non-impaired loans”). The Bank’s general loan loss allowance has two components: quantitative and qualitative risk factors. The quantitative risk factors are based on the migration analysis methodology described above. The loans are classified by class and risk grade, and the historical loss migration is tracked for the various classes. Loss experience is quantified for a specified period and then weighted to place more significance on the most recent losses. That loss experience is then applied to the stratified portfolio at the end of each quarter. For PCI loans, a general loan loss allowance is provided to the extent that there has been credit deterioration since the date of acquisition. Additionally, in order to systematically quantify the credit risk impact of other trends and changes within the loan portfolio, the Bank utilizes qualitative adjustments to the migration analysis within established parameters. The parameters for making adjustments are established under a Credit Risk Matrix that provides seven possible scenarios for each of the factors below. The matrix allows for up to three positive (Major, Moderate, and Minor), three negative (Major, Moderate, and Minor), and one neutral credit risk scenarios within each factor for each loan type or pool. However, if information exists to warrant adjustment to the migration analysis, changes are made in accordance with the established parameters supported by narrative and/or statistical analysis. The Credit Risk Matrix and the nine possible scenarios enable the Bank to qualitatively adjust the Loss Migration Ratio by as much as 50 basis points in either direction (positive or negative) for each loan type pool. This matrix considers the following nine factors, which are patterned after the guidelines provided under the FFIEC Interagency Policy Statement on the Allowance for Loan and Lease Losses: • Changes in lending policies and procedures, including underwriting standards and collection, charge off, and recovery practices; • Changes in national and local economic and business conditions and developments, including the condition of various market segments; • Changes in the nature and volume of the loan portfolio; • Changes in the experience, ability and depth of lending management and staff; • Changes in the trends of the volume and severity of past due loans, classified loans, nonaccrual loans, troubled debt restructurings and other loan modifications; • Changes in the quality of our loan review system and the degree of oversight by the Directors; • Changes in the value of underlying collateral for collateral-dependent loans; • The existence and effect of any concentrations of credit and changes in the level of such concentrations; and • The effect of external factors, such as competition and legal and regulatory requirements, on the level of estimated losses in our loan portfolio. The Company also establishes specific loss allowances for loans that have identified potential credit risk conditions or circumstances related to a specific individual credit. The specific allowance amounts are determined in accordance with ASC 310-10-35-22, “Measurement of Impairment.” The loans identified as impaired will be accounted for in accordance with one of the three acceptable valuation methods: 1) the present value of future cash flows discounted at the loan’s effective interest rate; 2) the loan’s observable market price; or 3) the fair value of the collateral, if the loan is collateral dependent. For the collateral dependent impaired loans, management obtains a new appraisal to determine the amount of impairment as of the date that the loan became impaired. The appraisals are based on an “as is” valuation. To ensure that appraised values remain current, management either obtains updated appraisals every twelve months from a qualified independent appraiser or an internal evaluation of the collateral is performed by qualified personnel. If the third party market data indicates that the value of the collateral property has declined since the most recent valuation date, management adjusts the value of the property downward to reflect current market conditions. If the fair value of the collateral is less than the recorded amount of the loan, management recognizes impairment by creating or adjusting an existing valuation allowance with a corresponding charge to the provision for loan losses. If an impaired loan is expected to be collected through liquidation of the underlying collateral, the loan is deemed to be collateral dependent and the amount of impairment is charged off against the allowance for loan losses. The Company considers a loan to be impaired when it is probable that not all amounts due (principal and interest) will be collectible in accordance with the contractual terms of the loan agreement. Factors considered by management in determining impairment include payment status, collateral value, and the probability of collecting scheduled principal and interest payments when due. Loans that experience insignificant payment delays and payment shortfalls generally are not classified as impaired. The significance of payment delays and payment shortfalls is determined on a case-by-case basis by taking into consideration all of the circumstances surrounding the loan and the borrower, including the length of the delay, the reasons for the delay, the borrower’s prior payment record, and the amount of the shortfall in relation to the principal and interest owed. For commercial business loans, real estate loans, and certain consumer loans, management bases the measurement of loan impairment on the present value of the expected future cash flows, discounted at the loan’s effective interest rate, or on the fair value of the loan’s collateral if the loan is collateral dependent. Management evaluates most consumer loans for impairment on a collective basis because these loans generally have smaller balances and are homogeneous in the underwriting of terms and conditions and in the types of collateral. For PCI loans, the allowance for loan losses is based upon expected cash flows for these loans. To the extent that a deterioration in borrower’s credit quality results in a decrease in expected cash flows subsequent to the acquisition of the loans, an allowance for loan losses would be established based on an estimate of future credit losses over the remaining life of the loans. Provision for loan losses on acquired loans for the three months ended March 31, 2017 was $1.9 million of which $734 thousand was related to PCI loans. The following table presents breakdown of loans by impairment method at March 31, 2017 and December 31, 2016 : As of March 31, 2017 Real Estate - Residential Real Estate - Commercial Real Estate - Construction Commercial Business Trade Finance Consumer and Other Total (Dollars in thousands) Impaired loans (gross carrying value) $ 1,465 $ 90,381 $ 2,856 $ 29,440 $ 4,450 $ 987 $ 129,579 Specific allowance $ — $ 2,560 $ — $ 2,479 $ — $ 40 $ 5,079 Allowance coverage ratio N/A 2.83 % N/A 8.42 % N/A 4.05 % 3.92 % Other loans $ 56,701 $ 7,858,463 $ 281,322 $ 1,667,455 $ 138,848 $ 419,182 $ 10,421,971 General allowance $ 287 $ 52,827 $ 1,710 $ 15,944 $ 811 $ 2,001 $ 73,580 Allowance coverage ratio 0.51 % 0.67 % 0.61 % 0.96 % 0.58 % 0.48 % 0.71 % Total loans $ 58,166 $ 7,948,844 $ 284,178 $ 1,696,895 $ 143,298 $ 420,169 $ 10,551,550 Total allowance for loan losses $ 287 $ 55,387 $ 1,710 $ 18,423 $ 811 $ 2,041 $ 78,659 Allowance coverage ratio 0.49 % 0.70 % 0.60 % 1.09 % 0.57 % 0.49 % 0.75 % As of December 31, 2016 Real Estate - Residential Real Estate - Commercial Real Estate - Construction Commercial Business Trade Finance Consumer and Other Total (Dollars in thousands) Impaired loans (gross carrying value) $ 3,562 $ 93,088 $ 1,300 $ 35,218 $ 6,029 $ 1,164 $ 140,361 Specific allowance $ — $ 2,002 $ — $ 4,493 $ 864 $ 50 $ 7,409 Allowance coverage ratio N/A 2.15 % N/A 12.76 % 14.33 % 4.30 % 5.28 % Other loans $ 54,322 $ 7,749,485 $ 252,813 $ 1,796,803 $ 148,899 $ 402,306 $ 10,404,628 General allowance $ 209 $ 47,915 $ 1,621 $ 19,054 $ 1,033 $ 2,102 $ 71,934 Allowance coverage ratio 0.38 % 0.62 % 0.64 % 1.06 % 0.69 % 0.52 % 0.69 % Total loans $ 57,884 $ 7,842,573 $ 254,113 $ 1,832,021 $ 154,928 $ 403,470 $ 10,544,989 Total allowance for loan losses $ 209 $ 49,917 $ 1,621 $ 23,547 $ 1,897 $ 2,152 $ 79,343 Allowance coverage ratio 0.36 % 0.64 % 0.64 % 1.29 % 1.22 % 0.53 % 0.75 % Under certain circumstances, the Company provides borrowers relief through loan modifications. These modifications are either temporary in nature (“temporary modifications”) or are more substantive. At March 31, 2017 , total modified loans were $66.1 mill

Deposits

Deposits	3 Months Ended
	Mar. 31, 2017
Banking and Thrift [Abstract]
Deposits	Deposits The aggregate amount of time deposits in denominations of $250,000 or more at March 31, 2017 and December 31, 2016 , was $1.56 billion and $1.55 billion , respectively. Included in time deposits of $250,000 or more were $300.0 million in California State Treasurer’s deposits at March 31, 2017 and December 31, 2016 . The California State Treasurer’s deposits are subject to withdrawal based on the State’s periodic evaluations. The Company is required to pledge eligible collateral of at least 110% of outstanding deposits. At March 31, 2017 and December 31, 2016 , securities with carrying values of approximately $355.7 million and $371.6 million , respectively, were pledged as collateral for the California State Treasurer’s deposit. The Company also utilizes brokered deposits as a secondary source of funds. Total brokered deposits at March 31, 2017 and December 31, 2016 , totaled $714.4 million and $724.7 million , respectively.

Borrowings

Borrowings	3 Months Ended
	Mar. 31, 2017
Debt Disclosure [Abstract]
Borrowings	Borrowings The Company maintains a line of credit with the FHLB of San Francisco for use as a secondary source of funds. The borrowing capacity with the FHLB is limited to the lower of 25% of the Bank’s total assets or the Bank’s collateral capacity, which was $3.36 billion at March 31, 2017 , and $3.38 billion at December 31, 2016 . The terms of this credit facility require the Company to pledge eligible collateral with the FHLB equal to at least 100% of outstanding advances. At March 31, 2017 and December 31, 2016 , real estate secured loans with a carrying amount of approximately $5.50 billion and $5.53 billion , respectively, were pledged at the FHLB. At March 31, 2017 and December 31, 2016 , other than FHLB stock, no securities were pledged as collateral at FHLB. At March 31, 2017 and December 31, 2016 , FHLB advances totaled $703.9 million and $754.3 million , respectively, had weighted average effective interest rates of 1.29% and 1.22% , respectively, and had various maturities through July 2021 . The Company had a putable advance at March 31, 2017 and December 31, 2016 , totaling $20.1 million and $20.2 million , respectively, with a quarterly put date. The stated rate of FHLB advances as of March 31, 2017 ranged between 0.84% and 2.02% . At March 31, 2017 , the Company’s remaining borrowing capacity with the FHLB was $2.64 billion . At March 31, 2017 , the contractual maturities for FHLB advances were as follows: Contractual Maturity/ (Dollars in thousands) Due within one year $ 220,103 $ 220,103 Due after one year through five years 483,747 483,747 Total $ 703,850 $ 703,850 As a member of the FRB system, the Bank may also borrow from the FRB of San Francisco. The maximum amount that the Bank may borrow from the FRB’s discount window is up to 95% of the outstanding principal balance of the qualifying loans and the fair value of the securities that are pledged. At March 31, 2017 , the outstanding principal balance of the qualifying loans was $651.7 million , and the fair value of investment securities was $5.7 million . There were no borrowings outstanding against this line as of March 31, 2017 and December 31, 2016 .

Subordinated Debentures

Subordinated Debentures	3 Months Ended
	Mar. 31, 2017
Subordinated Borrowings [Abstract]
Subordinated Debentures	Subordinated Debentures At March 31, 2017 , the Company had nine wholly owned subsidiary grantor trusts that had issued $126.0 million of pooled trust preferred securities. Trust preferred securities accrue and pay distributions periodically at specified annual rates as provided in the indentures. The trusts used the net proceeds from the offering to purchase a like amount of subordinated debentures (the “Debentures”). The Debentures are the sole assets of the trusts. The Company’s obligations under the subordinated debentures and related documents, taken together, constitute a full and unconditional guarantee by the Company of the obligations of the trusts. The trust preferred securities are mandatorily redeemable upon the maturity of the Debentures, or upon earlier redemption as provided in the indentures. The Company now has the right to redeem the Debentures in whole (but not in part) on a quarterly basis at a redemption price specified in the indentures plus any accrued but unpaid interest to the redemption date. The Company also has a right to defer consecutive payments of interest on the debentures for up to five years. The following table is a summary of trust preferred securities and Debentures at March 31, 2017 : Issuance Trust Issuance Date Trust Preferred Security Amount Carrying Value of Subordinated Debentures Rate Type Current Rate Maturity Date (Dollars in thousands) Nara Capital Trust III 06/05/2003 $ 5,000 $ 5,155 Variable 4.28% 06/15/2033 Nara Statutory Trust IV 12/22/2003 5,000 5,155 Variable 3.87% 01/07/2034 Nara Statutory Trust V 12/17/2003 10,000 10,310 Variable 4.10% 12/17/2033 Nara Statutory Trust VI 03/22/2007 8,000 8,248 Variable 2.78% 06/15/2037 Center Capital Trust I 12/30/2003 18,000 13,684 Variable 3.87% 01/07/2034 Wilshire Statutory Trust II 03/17/2005 20,000 15,158 Variable 2.94% 03/17/2035 Wilshire Statutory Trust III 09/15/2005 15,000 10,635 Variable 2.53% 09/15/2035 Wilshire Statutory Trust IV 07/10/2007 25,000 17,275 Variable 2.51% 09/15/2037 Saehan Capital Trust I 03/30/2007 20,000 14,447 Variable 2.77% 06/30/2037 Total $ 126,000 $ 100,067 The Company’s investment in the common trust securities of the issuer trusts was $3.9 million at March 31, 2017 and is included in other assets. Although the subordinated debt issued by the trusts are not included as a component of stockholders’ equity in the consolidated balance sheets, the debt is treated as capital for regulatory purposes. The trust preferred security debt issuances are includable in Tier I capital up to a maximum of 25% of capital on an aggregate basis. Any amount that exceeds 25% qualifies as Tier 2 capital.

Derivative Financial Instrument

Derivative Financial Instruments (Notes)	3 Months Ended
	Mar. 31, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	he following table reflects the notional amount and fair value of mortgage banking derivatives for the dates indicated: As of March 31, 2017 As of December 31, 2016 (Dollars in thousands) Notional Amount Fair Value Notional Amount Fair Value Assets: Interest rate lock commitments $ 6,801 $ 113 $ 11,168 $ 130 Forward sale contracts related to mortgage banking $ 626 $ — $ 3,223 $ 17 Liabilities: Interest rate lock commitments $ — $ — $ 1,810 $ (3 ) Forward sale contracts related to mortgage banking $ 6,175 $ (40 ) $ 9,755 $ (38 )

Goodwill, Intangible Assets, an

Goodwill, Intangible Assets, and Servicing Assets	3 Months Ended
	Mar. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill, Intangible Assets, and Servicing Assets	Goodwill, Intangible Assets, and Servicing Assets Goodwill represents the excess of the purchase price over the sum of the estimated fair values of the tangible and identifiable intangible assets acquired less the estimated fair value of the liabilities assumed. Goodwill has an indefinite useful life and is evaluated for impairment annually or more frequently if events and circumstances indicate that the asset might be impaired. An impairment loss is recognized to the extent that the carrying amount exceeds the asset’s fair value. At December 31, 2016, management assessed the qualitative factors related to goodwill for the year to determine whether it was more-likely-than-not that the fair value was less than its carrying amount. Based on the analysis of these factors, management determined that it was more-likely-than-not that the fair value of goodwill exceeded the carrying value and that the two-step impairment test was not needed. Goodwill is not amortized for book purposes and is not tax deductible. The carrying amount of the Company’s goodwill as of March 31, 2017 and December 31, 2016 was $464.0 million , and $463.0 million , respectively. There was no impairment of goodwill during the three months ended March 31, 2017 . Goodwill recorded in the third quarter of 2016 from the acquisition of Wilshire totaled $359.0 million . During the fourth quarter of 2016, the Company made a net adjustment of $1.4 million to the deferred tax assets and taxes receivable acquired from Wilshire which reduced the previous goodwill recorded from the transaction by $1.4 million . Subsequently in the first quarter of 2017, the Company made a net adjustment of $978 thousand to OREO and deferred tax assets acquired from Wilshire which increased goodwill recorded from the Wilshire transaction by $978 thousand . These adjustments were made to reflect new information obtained about facts and circumstances that existed as of the acquisition date in accordance with ASC 805-10-25-13. At March 31, 2017 , goodwill related to the acquisition of Wilshire totaled $358.6 million . Core deposit intangible assets are amortized over their estimated lives, which range from seven to ten years. Amortization expense related to core deposit intangible assets totaled $676 thousand and $212 thousand for the three months ended March 31, 2017 and 2016 , respectively. The following table provides information regarding the core deposit intangibles at March 31, 2017 : As of March 31, 2017 Amortization period Gross Carrying Amount Accumulated Amortization (Dollars in thousands) Core deposit—Center Financial acquisition 7 years $ 4,100 $ (3,755 ) Core deposit—PIB acquisition 7 years 604 (484 ) Core deposit—Foster acquisition 10 years 2,763 (1,417 ) Core deposit—Wilshire acquisition 10 years 18,138 (1,399 ) Total $ 25,605 $ (7,055 ) Servicing assets are recognized when SBA or residential mortgage loans are sold with servicing retained with the income statement effect recorded in net gains on sales of SBA and other loans. Servicing assets are initially recorded at fair value based on the present value of the contractually specified servicing fee, net of servicing costs, over the estimated life of the loan, using a discount rate based on the related note rate. The Company’s servicing costs approximates the industry average servicing costs. All classes of servicing assets are subsequently measured using the amortization method which requires servicing rights to be amortized into noninterest income in proportion to, and over the period of, the estimated future net servicing income of the underlying loans. Management periodically evaluates servicing assets for impairment based upon the fair value of the rights as compared to the carrying amount. Impairment is determined by stratifying rights into groupings based on loan type. Impairment is recognized through a valuation allowance for an individual grouping, to the extent that fair value is less than the carrying amount. As of March 31, 2017 and December 31, 2016, the Company did not have a valuation allowance for servicing assets. The changes in servicing assets for the three months ended March 31, 2017 and 2016 were as follows: Three Months Ended March 31, 2017 2016 (Dollars in thousands) Balance at beginning of period $ 26,457 $ 12,000 Additions through originations of servicing assets 1,296 777 Amortization (1,812 ) (921 ) Balance at end of period $ 25,941 $ 11,856 Loans serviced for others are not reported as assets. The principal balances of loans serviced for other institutions were $1.5 billion as of March 31, 2017 and $1.5 billion as of December 31, 2016 . The Company utilizes the discounted cash flow method to calculate the initial excess servicing assets. The inputs used in determining the impairment of the servicing assets at March 31, 2017 and December 31, 2016 are presented below. March 31, 2017 December 31, 2016 SBA Servicing Assets: Weighted-average discount rate 10.29% 9.85% Constant prepayment rate 8.18% 8.05% Mortgage Servicing Assets: Weighted-average discount rate 9.66% 7.25% Constant prepayment rate 7.71% 13.77%

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes For the first quarter of 2017, the Company had an income tax provision totaling $23.0 million on pretax income of $59.2 million , representing an effective tax rate of 38.84% , compared with an income tax provision of $16.2 million on pretax income of $39.8 million , representing an effective tax rate of 40.69% for the first quarter of 2016. A reconciliation of the difference between the federal statutory income tax rate and the effective tax rate is shown in the following table for the three months ended March 31, 2017 and March 31, 2016 : March 31, 2017 March 31, 2016 Statutory tax rate 35.00 % 35.00 % State taxes-net of federal tax effect 7.18 % 7.32 % Affordable housing partnership investment tax credit (2.93 )% (1.29 )% Bank owned life insurance (0.16 )% (0.24 )% Municipal securities (0.25 )% (0.21 )% Nondeductible transaction costs 0.08 % 0.48 % Other (0.08 )% (0.37 )% Effective income tax rate 38.84 % 40.69 % The Company and its subsidiaries are subject to U.S. federal income tax, as well as state income taxes. The Company had total unrecognized tax benefits of $2.2 million at March 31, 2017 and December 31, 2016 that relate to uncertainties associated with federal and state income tax matters. Other than the accrued interest of $100 thousand related to uncertain tax positions from an acquired entity, the Company recognizes interest and penalties on income tax matters in income tax expense. The Company recorded approximately $331 thousand and $306 thousand for accrued interest and penalties ( no portion was related to penalties) at March 31, 2017 and December 31, 2016 , respectively. Management believes it is reasonably possible that the unrecognized tax benefits may decrease by approximately $1.0 million in the next twelve months. The statute of limitations for the assessment of income taxes related to the consolidated Federal income tax returns is closed for all tax years up to and including 2012. The expiration of the statute of limitations for the assessment of income and franchise taxes related to the various state income and franchise tax returns varies by state. The Company is currently under examination by the California Franchise Tax Board (FTB) for the 2011, 2012 and 2013 tax years and by the New York State Department of Taxation and Finance for the 2013, 2014, and 2015 tax years. Wilshire Bancorp, Inc., an acquired entity, is currently under examination by the California Franchise Tax Board (FTB) for the 2011, 2012, and 2013 tax years and by the New York State Department of Taxation and Finance for the 2011, 2012, 2013, and 2014 tax years. While the outcome of the examinations is unknown, the Company expects no material adjustments. Income tax expense is the total of the current year income tax due or refundable and the change in deferred tax assets and liabilities. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases and operating loss and tax credit carry forwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. Deferred tax assets are reduced by a valuation allowance when, in the opinion of management, it is more likely than not that some portion, or all, of the deferred tax asset will not be realized. In assessing the realization of deferred tax assets, management evaluates both positive and negative evidence, including the existence of any cumulative losses in the current year and the prior two years, the amount of taxes paid in available carry-back years, the forecasts of future income, applicable tax planning strategies, and assessments of current and future economic and business conditions. This analysis is updated quarterly and adjusted as necessary. Based on the analysis, the Company has determined that a valuation allowance for deferred tax assets was not required as of March 31, 2017 . The Company adopted ASU 2016-09 , “Compensation - Stock Compensation: Improvements to Employee Share-Based Payment Accounting” during the first quarter of 2017. As a result of the adoption, the Company recorded $73 thousand of income tax benefits for the three months ended March 31, 2017 related to excess tax benefits from stock compensation. Prior to 2017, such excess tax benefits were generally recorded in additional paid-in capital as part of stockholders’ equity. This new accounting standard may potentially increase the volatility in the Company’s effective tax rates in future quarters.

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2017
Fair Value Disclosures [Abstract]
Fair Value Measurements	ous market for the asset or liability in an orderly transaction between market participants on the measurement date. There are three levels of inputs that may be used to measure fair value. The fair value inputs of the instruments are classified and disclosed in one of the following categories pursuant to ASC 820: Level 1 - Unadjusted quoted prices in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date. The quoted price shall not be adjusted for any blockage factor (i.e., size of the position relative to trading volume). Level 2 - Pricing inputs are inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly. Fair value is determined through the use of models or other valuation methodologies, including the use of pricing matrices. If the asset or liability has a specified (contractual) term, a Level 2 input must be observable for substantially the full term of the asset or liability. Level 3 - Pricing inputs are unobservable for the asset or liability. Unobservable inputs are used to measure fair value to the extent that observable inputs are not available, thereby allowing for situations in which there is little, if any, market activity for the asset or liability at the measurement date. The inputs into the determination of fair value require significant management judgment or estimation. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, an asset’s or liability’s level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. Our assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment and considers factors specific to the asset or liability. The Company uses the following methods and assumptions in estimating fair value disclosures for financial instruments. Financial assets and liabilities recorded at fair value on a recurring and non-recurring basis are listed as follows: Securities Available for Sale The fair values of securities available for sale are determined by obtaining quoted prices on nationally recognized securities exchanges (Level 1 inputs) or matrix pricing, which is a technique widely used in the industry to value debt securities without relying exclusively on quoted prices for the specific securities but rather by relying on the securities’ relationship to other benchmark quoted securities (Level 2 inputs). The fair values of the Company’s Level 3 securities available for sale were measured using an income approach valuation technique. The primary inputs and assumptions used in the fair value measurement were derived from the securities’ underlying collateral, which included discount rates, prepayment speeds, payment delays, and an assessment of the risk of default of the underlying collateral, among other factors. Significant increases or decreases in any of the inputs or assumptions would result in a significant increase or decrease in the fair value measurement. Interest Rate Swaps The Company offers interest rate swaps to certain loan customers to allow them to hedge the risk of rising interest rates on their variable rate loans. The Company originates a variable rate loan and enters into a variable-to-fixed interest rate swap with the customer. The Company also enters into an offsetting swap with a correspondent bank. These back-to-back agreements are intended to offset each other and allow the Company to originate a variable rate loan, while providing a contract for fixed interest payments for the customer. The net cash flow for the Company is equal to the interest income received from a variable rate loan originated with the customer. The fair value of these derivatives is based on a discounted cash flow approach. Due to the observable nature of the inputs used in deriving the fair value of these derivative contracts, the valuation of interest rate swaps is classified as Level 2. Impaired Loans The fair values of impaired loans are generally measured for impairment using the practical expedients permitted by FASB ASC 310-10-35 including impaired loans measured at an observable market price (if available), or at the fair value of the loan’s collateral (if the loan is collateral dependent). Fair value of the loan’s collateral, when the loan is dependent on collateral, is determined by appraisals or independent valuation, less costs to sell of 8.5%. For commercial and industrial and asset backed loans, independent valuations may be comprised of a 20-60% discount for eligible accounts receivable and a 50-70% discount for inventory. These result in a Level 3 classification. OREO OREO is fair valued at the time the loan is foreclosed upon and the asset is transferred to OREO. The value is based primarily on third party appraisals, less costs to sell of 8.5% and result in a Level 3 classification of the inputs for determining fair value. OREO is reviewed and evaluated on at least a quarterly basis for additional impairment and adjusted to lower of cost or market accordingly, based on the same factors identified above. Loans held for sale Loans held for sale are carried at the lower of cost or fair value, as determined by outstanding commitments from investors, or based on recent comparable sales (Level 2 inputs), if available, and if not available, are based on discounted cash flows using current market rates applied to the estimated life and credit risk (Level 3 inputs) or may be assessed based upon the fair value of the collateral, which is obtained from recent real estate appraisals (Level 3 inputs). These appraisals may utilize a single valuation approach or a combination of approaches including the income approach. Adjustments are routinely made in the appraisal process by the appraisers to adjust for differences between the comparable sales and income data available. Such adjustments are typically significant and result in Level 3 classification of the inputs for determining fair value. Mortgage banking derivatives Mortgage banking derivative instruments consist of interest rate lock commitments and forward sale contracts that trade in liquid markets. The fair value is based on the prices available from third party investors. Due to the observable nature of the inputs used in deriving the fair value, the valuation of mortgage banking derivatives are classified as Level 2. Assets and liabilities measured at fair value on a recurring basis are summarized below: Fair Value Measurements at the End of the Reporting Period Using March 31, 2017 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) (Dollars in thousands) Assets: Securities available for sale: GSE debt securities $ 9,998 $ — $ 9,998 $ — GSE collateralized mortgage obligations (residential) 726,619 — 726,619 — GSE mortgage-backed securities (residential) 732,692 — 732,692 — Corporate securities 4,313 — 4,313 — Municipal securities 97,254 — 96,126 1,128 Mutual funds 13,070 13,070 — — Interest rate swaps (1,623 ) — (1,623 ) — Mortgage banking derivatives 113 — 113 — Liabilities: Interest rate swaps (1,623 ) — (1,623 ) — Mortgage banking derivatives 40 — 40 — Fair Value Measurements at the End of the Reporting Period Using December 31, 2016 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) (Dollars in thousands) Assets: Securities available for sale: GSE debt securities $ 12,008 $ — $ 12,008 $ — GSE collateralized mortgage obligations (residential) 705,667 — 705,667 — GSE mortgage-backed securities (residential) 728,041 — 728,041 — Corporate securities 11,127 — 11,127 — Municipal securities 86,839 — 85,700 1,139 Mutual funds 13,058 13,058 — — Interest rate swaps (1,565 ) — (1,565 ) — Mortgage banking derivatives 147 — 147 — Liabilities: Interest rate swaps (1,565 ) — (1,565 ) — Mortgage banking derivatives 41 — 41 — There were no transfers between Level 1, 2 and 3 during the three months ended March 31, 2017 and 2016 . There were no gains or losses recognized in earnings during the three months ended March 31, 2017 and 2016 . The following table reflects the notional amount and fair value of mortgage banking derivatives for the date indicated: As of March 31, 2017 As of December 31, 2016 Notional Amount Fair Value Notional Amount Fair Value (Dollars in thousands) Assets: Interest rate lock commitments $ 6,801 $ 113 $ 11,168 $ 130 Forward sale contracts related to mortgage banking $ 626 $ — $ 3,223 $ 17 Liabilities: Interest rate lock commitments $ — $ — $ 1,810 $ (3 ) Forward sale contracts related to mortgage banking $ 6,175 $ (40 ) $ 9,755 $ (38 ) The table below presents a reconciliation and income statement classification of gains and losses for all assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the three months ended March 31, 2017 : Three Months Ended March 31, 2017 2016 (Dollars in thousands) Beginning Balance, January 1 $ 1,139 $ 1,166 Total (losses) or gains included in other comprehensive income (11 ) 43 Ending Balance, March 31 $ 1,128 $ 1,209 The Company measures certain assets at fair value on a non-recurring basis including impaired loans (excluding PCI loans), loans held for sale, and OREO. These fair value adjustments result from impairments recognized during the period, application of the lower of cost or fair value on loans held for sale, the application of fair value less cost to sell on OREO. Assets measured at fair value on a non-recurring basis are summarized below: Fair Value Measurements at the End of the Reporting Period Using March 31, 2017 Quoted Prices Significant Significant (Dollars in thousands) Assets: Impaired loans at fair value: Real estate loans $ 65,125 $ — $ — $ 65,125 Commercial business 9,407 — — 9,407 Trade finance 4,365 — — 4,365 Consumer 97 — — 97 Loans held for sale, net 6,571 — 6,571 — OREO 19,096 — — 19,096 Fair Value Measurements at the End of the Reporting Period Using December 31, 2016 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) (Dollars in thousands) Assets: Impaired loans at fair value: Real estate loans $ 58,882 $ — $ — $ 58,882 Commercial business 6,563 — — 6,563 Trade Finance — — — — Consumer 253 — — 253 Impaired loans held for sale, net 3,788 — 3,788 — OREO 21,990 — — 21,990 For assets measured at fair value on a non-recurring basis, the total net gains (losses), which include charge offs, recoveries, specific reserves, and recognized gains and losses on sales are summarized below: For the Three Months Ended March 31, 2017 2016 (Dollars in thousands) Assets: Impaired loans at fair value: Real estate loans $ (2,002 ) $ 309 Commercial business (974 ) (2,672 ) Trade Finance (712 ) 1,296 Consumer (266 ) (62 ) Impaired loans held for sale, net 420 15 OREO (595 ) (577 ) Fair Value of Financial Instruments Carrying amounts and estimated fair values of financial instruments, not previously presented, at March 31, 2017 and December 31, 2016 were as follows: March 31, 2017 Carrying Estimated Fair Value Measurement Using (Dollars in thousands) Financial Assets: Cash and cash equivalents $ 461,068 $ 461,068 Level 1 Interest bearing deposits in other financial institutions and other investments 43,958 43,630 Level 2/3 Loans held for sale 19,141 20,291 Level 2 Loans receivable—net 10,471,008 10,633,834 Level 3 FHLB stock 21,203 N/A N/A Accrued interest receivable 25,683 25,683 Level 2/3 Customers’ liabilities on acceptances 2,771 2,771 Level 2 Financial Liabilities: Noninterest bearing deposits $ 2,963,947 $ 2,963,947 Level 2 Saving and other interest bearing demand deposits 3,771,155 3,771,155 Level 2 Time deposits 3,968,675 3,963,545 Level 2 FHLB advances 703,850 698,287 Level 2 Subordinated debentures 100,067 100,067 Level 2 Accrued interest payable 10,592 10,592 Level 2 Servicing Assets 25,941 25,941 Level 3 Acceptances outstanding 2,771 2,771 Level 2 December 31, 2016 Carrying Estimated Fair Value Measurement Using (Dollars in thousands) Financial Assets: Cash and cash equivalents $ 437,334 $ 437,334 Level 1 Interest bearing deposits in other financial institutions and other investments 44,202 43,773 Level 2/3 Loans held for sale 22,785 24,492 Level 2 Loans receivable—net 10,463,989 10,666,642 Level 3 FHLB stock 21,964 N/A N/A Accrued interest receivable 26,880 26,880 Level 2/3 Customers’ liabilities on acceptances 2,899 2,899 Level 2 Financial Liabilities: Noninterest bearing deposits $ 2,900,241 $ 2,900,241 Level 2 Saving and other interest bearing demand deposits 3,703,352 3,703,352 Level 2 Time deposits 4,038,442 4,036,664 Level 2 FHLB advances 754,290 749,486 Level 2 Subordinated debentures 99,808 99,808 Level 2 Accrued interest payable 10,863 10,863 Level 2 Servicing Assets 26,457 26,457 Level 3 Acceptances outstanding 2,899 2,899 Level 2 The methods and assumptions used to estimate fair value are described as follows: The carrying amount is the estimated fair value for cash and cash equivalents, savings and other interest bearing demand deposits, customer’s and Bank’s liabilities on acceptances, noninterest bearing deposits, short-term debt, secured borrowings and variable rate loans or deposits that reprice frequently and fully. For fixed rate loans or deposits and for variable rate loans or deposits with infrequent repricing or repricing limits, fair value is based on discounted cash flows using current market rates applied to the estimated life and credit risk. The allowance for loan losses is considered to be a reasonable estimate of discount for credit quality concerns. Fair value of SBA loans held for sale is based on market quotes. For fair value of non-SBA loans held for sale, see the measurement method discussed previously. The fair value for servicing assets is determined through discounted cash flow analysis and utilizes discount rates, prepayment speeds, and delinquency rate assumptions as inputs. Fair value of time deposits and debt is based on current rates for similar financing. It was not practicable to determine the fair value of FRB stock or FHLB stock due to restrictions placed on their transferability. The fair value of commitments to fund loans represents fees currently charged to enter into similar agreements with similar remaining maturities and is not presented herein. The fair value of these financial instruments is not material to the consolidated financial statements.

Stockholders' Equity

Stockholders' Equity	3 Months Ended
	Mar. 31, 2017
Stockholders’ Equity and Regulatory Matters [Abstract]
Stockholders’ Equity	The following table presents the quarterly changes to accumulated other comprehensive (loss) income for the three months ended March 31, 2017 and March 31, 2016 : Three months ended, March 31, 2017 March 31, 2016 (Dollars in thousands) Balance at beginning of period $ (14,657 ) $ (1,832 ) Unrealized gains on securities available for sale and interest only strips 3,132 15,592 Tax effect 1,324 6,605 Total other comprehensive income 1,808 8,987 Balance at end of period $ (12,849 ) $ 7,155 For the three months ended March 31, 2017 and March 31, 2016 there were no reclassifications out of accumulated other comprehensive (loss) income. eholders received 0.7034 shares of the Company’s common stock for each share of Wilshire stock owned. Based on this exchange ratio, 55.5 million shares of the Company’s common stock were issued to Wilshire shareholders at $15.37 per share, the closing price of the Company’s stock on July 29, 2016. As a result, $852.9 million in common stock was issued as consideration in the transaction and $3.4 million in additional paid-in capital was recorded to account for the fair value of stock options assumed. Total stockholders’ equity at March 31, 2017 was $1.88 billion , compared to $1.86 billion at December 31, 2016. The Company assumed certain warrants (related to the TARP Capital Purchase Plan) to purchase shares of the Company’s common stock. On May 20, 2015, the U.S. Treasury Department completed an auction to sell certain of its warrant positions, and the Company submitted the winning bid to repurchase an outstanding warrant to purchase 350,767 shares of the Company’s common stock. The Company repurchased this warrant for $1.2 million . As of March 31, 2017 , the U.S. Treasury Department held one remaining warrant for the purchase of 19,963 shares of the Company’s common stock. The Company paid a quarterly dividend of $0.12 per common share for the first quarter of 2017 compared to $0.11 per common share for the first quarter of 2016. The following table presents the quarterly changes to accumulated other comprehensive (loss) income for the three months ended March 31, 2017 and March 31, 2016 : Three months ended, March 31, 2017 March 31, 2016 (Dollars in thousands) Balance at beginning of period $ (14,657 ) $ (1,832 ) Unrealized gains on securities available for sale and interest only strips 3,132 15,592 Tax effect 1,324 6,605 Total other comprehensive income 1,808 8,987 Balance at end of period $ (12,849 ) $ 7,155 For the three months ended March 31, 2017 and March 31, 2016 there were no reclassifications out of accumulated other comprehensive (loss) income.

Regulatory Matters

Regulatory Matters	3 Months Ended
	Mar. 31, 2017
Banking and Thrift [Abstract]
Regulatory Matters	Regulatory Matters The Company and the Bank are subject to various regulatory capital requirements administered by the federal and state banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a material and adverse effect on the Company’s and the Bank’s business, financial condition and results of operation, such as restrictions on growth or the payment of dividends or other capital distributions or management fees. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Company and the Bank must meet specific capital guidelines that involve quantitative measures of their assets, liabilities and certain off-balance-sheet items as calculated under regulatory accounting practices. The capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings and other factors. In July, 2013, the federal bank regulatory agencies adopted final regulations, which revised their risk-based and leverage capital requirements for banking organizations to meet requirements of Dodd-Frank and to implement Basel III international agreements reached by the Basel Committee. The final rules began for the Company and the Bank on January 1, 2015 and are subject to a phase-in period through January 1, 2019. The final rules that had an impact on the Company and the Bank include: • An increase in the minimum Tier 1 capital ratio from 4.00% to 6.00% of risk-weighted assets; • A new category and a required 4.50% of risk-weighted assets ratio is established for “Common Equity Tier 1” as a subset of Tier 1 capital limited to common equity; • A minimum non-risk-based leverage ratio is set at 4.00%, eliminating a 3.00% exception for higher rated banks; • Changes in the permitted composition of Tier 1 capital to exclude trust preferred securities, mortgage servicing rights and certain deferred tax assets and include unrealized gains and losses on available for sale debt and equity securities; • The risk-weights of certain assets for purposes of calculating the risk-based capital ratios are changed for high volatility commercial real estate acquisition, development and construction loans, certain past due non-residential mortgage loans and certain mortgage-backed and other securities exposures; and • A new additional capital conservation buffer of 2.5% of risk weighted assets over each of the required capital ratios is being phased in from 2016 to 2019 and must be met to avoid limitations on the ability of the B ank to pay dividends, repurchase shares, or pay discretionary bonuses. The capital conservation buffer for the Company was initially 0.625% in 2016, and increases 0.625% annually until 2019. As of March 31, 2017 , the capital conservation buffer for the Company stood at 1.25%. As of March 31, 2017 , the ratios for the Company and the Bank are sufficient to meet the fully phased-in conservation buffer. As of March 31, 2017 and December 31, 2016 , the most recent regulatory notification categorized the Bank as “well-capitalized” under the regulatory framework for prompt corrective action. To be categorized as “well-capitalized”, the Bank must maintain minimum total risk-based, Tier I risk-based, common equity Tier 1, and Tier I leverage ratios as set forth in the following table. There are no conditions or events since the notification from regulators that management believes has changed the institution’s category. As of March 31, 2017 and December 31, 2016 , the Company and Bank met all capital adequacy requirements to which they are subject to. The Company’s and the Bank’s capital amounts and ratios are presented in the table below: Actual Required Minimum Capital Adequacy With Capital Buffer Required Amount Ratio Amount Ratio Amount Ratio Amount Ratio (Dollars in thousands) As of March 31, 2017 Common equity tier 1 capital (to risk weighted assets): Company $ 1,413,592 12.22 % $ 520,711 4.50 % $ 665,353 5.75 % N/A N/A Bank $ 1,489,239 12.88 % $ 520,425 4.50 % $ 664,987 5.75 % $ 751,724 6.50 % Total capital (to risk-weighted assets): Company $ 1,591,852 13.76 % $ 925,708 8.00 % $ 1,070,350 9.25 % N/A N/A Bank $ 1,571,333 13.59 % $ 925,199 8.00 % $ 1,069,762 9.25 % $ 1,156,499 10.00 % Tier I capital (to risk-weighted assets): Company $ 1,509,758 13.05 % $ 694,281 6.00 % $ 838,923 7.25 % N/A N/A Bank $ 1,489,239 12.88 % $ 693,899 6.00 % $ 838,462 7.25 % $ 925,199 8.00 % Tier I capital (to average assets): Company $ 1,509,758 11.72 % $ 515,352 4.00 % N/A N/A N/A N/A Bank $ 1,489,239 11.56 % $ 515,212 4.00 % N/A N/A $ 644,014 5.00 % Actual Required Minimum Capital Adequacy With Capital Buffer Required Amount Ratio Amount Ratio Amount Ratio Amount Ratio (Dollars in thousands) As of December 31, 2016 Common equity tier 1 capital (to risk weighted assets): Company $ 1,400,246 12.10 % $ 520,917 4.50 % $ 593,267 5.13 % N/A N/A Bank $ 1,475,228 12.75 % $ 520,631 4.50 % $ 592,941 5.13 % $ 752,022 6.50 % Total capital (to risk-weighted assets): Company $ 1,578,690 13.64 % $ 926,076 8.00 % $ 998,425 8.63 % N/A N/A Bank $ 1,557,765 13.46 % $ 925,566 8.00 % $ 997,876 8.63 % $ 1,156,957 10.00 % Tier I capital (to risk-weighted assets): Company $ 1,496,153 12.92 % $ 694,557 6.00 % $ 766,906 6.63 % N/A N/A Bank $ 1,475,228 12.75 % $ 694,174 6.00 % $ 766,484 6.63 % $ 925,566 8.00 % Tier I capital (to average assets): Company $ 1,496,153 11.49 % $ 520,947 4.00 % N/A N/A N/A N/A Bank $ 1,475,228 11.33 % $ 520,903 4.00 % N/A N/A $ 651,129 5.00 %

Basis of Presentation Basis of

Basis of Presentation Basis of Presentation (Policies)	3 Months Ended
	Mar. 31, 2017
Basis Of Presentation [Abstract]
Consolidation	The consolidated financial statements include the accounts of Hope Bancorp and its wholly owned subsidiaries, principally Bank of Hope. All intercompany transactions and balances have been eliminated in consolidation. The Company has made all adjustments, that in the opinion of management, are necessary to fairly present the Company’s financial position at March 31, 2017 and December 31, 2016 and the results of operations for the three months ended March 31, 2017 and 2016 . Certain reclassifications have been made to prior period amounts to conform to the current year presentation. The results of operations for the interim periods are not necessarily indicative of results to be anticipated for the full year.
Use of estimates	The preparation of consolidated financial statements in conformity with U.S. generally accepted accounting principles (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ significantly from those estimates.
Recent Accounting Pronouncements	Recent Accounting Pronouncements: In May 2014, the FASB issued ASU 2014-09, “Revenue from Contracts with Customers” which supersedes the revenue recognition requirements in Topic 605, Revenue Recognition. ASU 2014-09 is based on the principle that revenue is recognized to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. ASU 2014-09 also requires additional disclosure about the nature, amount, timing, and uncertainty of revenue and cash flows arising from customer contracts. ASU 2014-09 as amended by ASU 2015-14, ASU 2016-08, ASU 2016-10, ASU 2016-12 and ASU 2016-20, 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 revenue primarily consists of net interest income and noninterest income. The scope of the guidance explicitly excludes net interest income, as well as other revenues from financial instruments such as loans, leases, securities and derivatives. Certain noninterest income revenue items such as service charges on deposits accounts, gain/loss on other real estate owned sales, and other income items may be in the scope of ASU 2014-09 and how these revenue streams are recognized may change. The Company is currently in the process of evaluating the impact of ASU 2014-09 on its consolidated financial statements, but does not expect the adoption of ASU 2014-09 to have material impact on its consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842)”. The new standard establishes a right-of-use (ROU) model that requires a lessee to record a ROU asset and a lease liability on the balance sheet for all leases with terms longer than 12 months. Leases will be classified as either finance or operating, with classification affecting the pattern of expense recognition in the income statement. The new standard is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. A modified retrospective transition approach is required for lessees for capital and operating leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements, with certain practical expedients available. The Company is currently in the process of evaluating the impact of the pending adoption of the new standard 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.” ASU 2016-13 requires the measurement of all expected credit losses for financial assets held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. Financial institutions and other organizations will now use forward-looking information to better inform their credit loss estimates. ASU 2016-13 becomes effective for fiscal years and interim periods within those fiscal years beginning after December 15, 2019. The Company is currently in the process of evaluating the impact of the pending adoption of the new standard on its consolidated financial statements. In March 2017, the FASB issued ASU 2017-07, “Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost & Net Periodic Post-retirement Benefit Cost”. ASU 2017-07 was issued to to improve the presentation of net periodic pension costs and net periodic post-retirement benefit cost and requires that an employer report the service cost component in the same line item or items as other compensation costs arising from services rendered by the pertinent employees during the period. The other components of net benefit cost are required to be presented in the income statement separately from the service cost component and outside a subtotal of income from operations, if one is presented. If a separate line item or items are used to present the other components of net benefit cost, that line item or items must be appropriately described. If a separate line item or items are not used, the line item or items used in the income statement to present the other components of net benefit cost must be disclosed. ASU 2017-07 also allow only the service cost component to be eligible for capitalization when applicable (e.g., as a cost of internally manufactured inventory or a self-constructed asset). ASU 2017-07 is effective for annual period beginning after December 15, 2017, including interim periods within those annual periods. Early adoption is permitted as of the beginning of an annual period for which financial statements (interim or annual) have not been issued or made available for issuance. The Company is currently in the process of evaluating the impact of ASU 2017-07 on its consolidated financial statements, but does not expect the adoption of ASU 2017-07 to have material impact on it consolidated financial statements. In March 2017, the FASB issued ASU 2017-08, “Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities”. ASU 2017-08 was issued to amend the amortization period for certain callable debt securities held at a premium. ASU 2017-08 shortens the amortization period of premiums on certain purchased callable debt securities to the earliest call date. ASU 2017-08 affect all entities that hold investments in callable debt securities that have an amortized cost basis in excess of the amount that is repayable by the issuer at the earliest call date (that is, at a premium). ASU 2017-08 does not impact securities purchased at a discount, which continue to be amortized to maturity. ASU 2017-08 is effective for annual period beginning after December 15, 2018, including interim periods within those annual periods. Early adoption is permitted in an interim period. If an entity chooses to adopt early, any adjustments should be reflected as of the beginning of the fiscal year that includes the interim period. The adoption of ASU 2017-08 is not expected to have a material impact on the Company’s consolidated financial statements. In May 2017, the FASB issued ASU 2017-09, Compensation-Stock Compensation (Topic 718): Scope of Modification”. ASU 2017-09 was issued to provide clarity and reduce both 1) diversity in practice and 2) cost and complexity when applying the guidance in Topic 718, Compensation - Stock Compensation, to a change to the terms or conditions of a share-based payment award. Diversity in practice has arisen in part because some entities apply modification accounting under Topic 718 for modifications to terms and conditions that they consider substantive, but do not when they conclude that particular modifications are not substantive. Others apply modification accounting for any change to an award, except for changes that they consider purely administrative in nature. Still others apply modification accounting when a change to an award changes the fair value, the vesting, or the classification of the award. In practice, it appears that the evaluation of a change in fair value, vesting, or classification may be used to evaluate whether a change is substantive. ASU 2017-09 include guidance on determining which changes to the terms and conditions of share-based payment awards require an entity to apply modification accounting under Topic 718. ASU 2017-09 is effective for the annual period, and interim periods within the annual periods, beginning after December 15, 2017. Early adoption is permitted, including adoption in any interim period for: (a) public business entities for reporting periods for which financial statements have not yet been issued, and (b) all other entities for reporting periods for which financial statements have not yet been made available for issuance. ASU 2017-09 should be applied prospectively to an award modified on or after the adoption date. The Company is currently in the process of evaluating the impact of ASU 2017-09 on its consolidated financial statements, but does not expect the adoption of ASU 2017-09 to have material impact on it consolidated financial statements.

Mergers and Acquisitions (Table

Mergers and Acquisitions (Tables)	3 Months Ended
	Mar. 31, 2017
Business Combinations [Abstract]
Consideration Paid, Assets Acquired and Liabilities Assumed	The consideration paid, the assets acquired, and the liabilities assumed are summarized in the following table: (Dollars in thousands) Consideration Paid: Hope common stock issued in exchange for Wilshire common stock $ 852,939 Cash paid for fractional shares 3 Hope stock options issued in exchange Wilshire stock options 3,370 Total consideration paid $ 856,312 Assets Acquired: Cash and cash equivalents $ 100,127 Investment securities available for sale 478,938 Loans receivable 3,800,807 FRB and FHLB stock 16,539 OREO 13,173 Premises and equipment 16,812 Bank owned life insurance 25,240 Servicing assets 16,203 Low income housing tax credit investments 47,111 Core deposit intangibles 18,138 Deferred tax assets, net 18,174 Other assets 76,818 Liabilities Assumed: Deposits (3,812,367 ) Borrowings (206,282 ) Subordinated debentures (56,942 ) Other liabilities (54,751 ) Total identifiable net assets $ 497,738 Excess of consideration paid over fair value of net assets acquired (goodwill) $ 358,574
Acquisition Related Expenses	The following table presents acquisition-related expenses associated with the merger with Wilshire, the pending acquisition of U & I, and other previous acquisitions which were reflected in the Consolidated Statements of Income in merger and integration expense. These expenses are comprised primarily of salaries and employee benefits, professional fees, and other noninterest expense related to acquisitions. Three Months Ended March 31, 2017 2016 (Dollars in thousands) Wilshire $ 401 $ 1,183 U & I 522 — Other 24 24 Total merger and integration expenses $ 947 $ 1,207

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Summary of Stock Option Activity Under the Plan	The following is a summary of stock option activity under the 2007 Plan and 2016 Plan for the three months ended March 31, 2017 : Number of Shares Weighted- Average Exercise Price Per Share Weighted- Average Remaining Contractual Life (Years) Aggregate Intrinsic Value (Dollars in thousands) Outstanding - January 1, 2017 1,624,227 $ 15.30 Granted — — Exercised (21,307 ) 11.07 Expired (1,530 ) 15.34 Forfeited — — Outstanding - March 31, 2017 1,601,390 $ 15.36 6.40 $ 6,861 Options exercisable - March 31, 2017 866,548 $ 14.02 4.13 $ 5,218
Summary of Restricted and Performance Unit Activity Under the Plan	The following is a summary of restricted stock and performance unit activity under the 2007 Plan and 2016 Plan for the three months ended March 31, 2017 : Number of Shares Weighted- Average Grant Date Fair Value Outstanding - January 1, 2017 403,658 $ 16.17 Granted — — Vested (36,407 ) 15.31 Forfeited (3,372 ) 14.75 Outstanding - March 31, 2017 363,879 $ 16.27

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2017
Earnings Per Share [Abstract]
Computation of basic and diluted EPS	The following tables show the computation of basic and diluted EPS for the three months ended March 31, 2017 and 2016 . Three Months Ended March 31, 2017 2016 Net Income (Numerator) Weighted-Average Shares (Denominator) Per Share (Amount) Net Income (Numerator) Weighted-Average Shares Per Share (Amount) (Dollars in thousands, except share and per share data) Basic EPS - common stock $ 36,210 135,248,018 $ 0.27 $ 23,623 79,583,188 $ 0.30 Effect of dilutive securities: Stock options and restricted stock 520,627 30,057 Diluted EPS - common stock $ 36,210 135,768,645 $ 0.27 $ 23,623 79,613,245 $ 0.30

Securities Available for Sale (

Securities Available for Sale (Tables)	3 Months Ended
	Mar. 31, 2017
Available-for-sale Securities [Abstract]
Summary of Securities Available for Sale	The following is a summary of securities available for sale as of the dates indicated: At March 31, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value (Dollars in thousands) Debt securities: U.S. Government agency and U.S. Government sponsored enterprises Debt securities $ 10,002 $ — $ (4 ) $ 9,998 Collateralized mortgage obligations (residential) 736,000 406 (9,787 ) 726,619 Mortgage-backed securities (residential) 744,654 1,252 (13,214 ) 732,692 Corporate securities 4,564 — (251 ) 4,313 Municipal securities 97,689 609 (1,044 ) 97,254 Total debt securities 1,592,909 2,267 (24,300 ) 1,570,876 Mutual funds 13,425 18 (373 ) 13,070 Total investment securities available for sale $ 1,606,334 $ 2,285 $ (24,673 ) $ 1,583,946 At December 31, 2016 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value (Dollars in thousands) Debt securities: U.S. Government agency and U.S. Government sponsored enterprises Debt securities $ 12,005 $ 3 $ — $ 12,008 Collateralized mortgage obligations (residential) 715,981 349 (10,663 ) 705,667 Mortgage-backed securities (residential) 741,304 1,132 (14,395 ) 728,041 Corporate securities 11,576 — (449 ) 11,127 Municipal securities 88,018 358 (1,537 ) 86,839 Total debt securities 1,568,884 1,842 (27,044 ) 1,543,682 Mutual funds 13,425 — (367 ) 13,058 Total investment securities available for sale $ 1,582,309 $ 1,842 $ (27,411 ) $ 1,556,740
Investments Classified by Contractual Maturity Date	The amortized cost and estimated fair value of investment securities at March 31, 2017 , by contractual maturity, are shown below. Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. Securities not due at a single maturity date are shown separately. Amortized Cost Estimated Fair Value (Dollars in thousands) Available for sale: Due within one year $ 10,724 $ 10,725 Due after one year through five years 7,472 7,630 Due after five years through ten years 40,905 40,891 Due after ten years 53,154 52,319 U.S. Government agency and U.S. Government sponsored enterprises Collateralized mortgage obligations (residential) 736,000 726,619 Mortgage-backed securities (residential) 744,654 732,692 Mutual funds 13,425 13,070 Total $ 1,606,334 $ 1,583,946
Schedule of Unrealized Loss on Investments	The following tables show our investments’ gross unrealized losses and estimated fair value, aggregated by investment category and the length of time that the individual securities have been in a continuous unrealized loss position as of the dates indicated. As of March 31, 2017 Less than 12 months 12 months or longer Total Description of Securities Number of Securities Fair Value Gross Unrealized Losses Number of Securities Fair Value Gross Unrealized Losses Number of Securities Fair Value Gross Unrealized Losses (Dollars in thousands) Debt securities* 3 $ 9,998 $ (4 ) — $ — $ — 3 $ 9,998 $ (4 ) Collateralized mortgage obligations (residential)* 67 624,327 (8,668 ) 4 34,843 (1,119 ) 71 659,170 (9,787 ) Mortgage-backed securities (residential)* 59 606,378 (13,214 ) — — — 59 606,378 (13,214 ) Corporate securities — — — 1 4,313 (251 ) 1 4,313 (251 ) Municipal securities 54 50,447 (1,018 ) 1 509 (26 ) 55 50,956 (1,044 ) Mutual funds 3 11,590 (373 ) — — — 3 11,590 (373 ) Total 186 $ 1,302,740 $ (23,277 ) 6 $ 39,665 $ (1,396 ) 192 $ 1,342,405 $ (24,673 ) __________________________________ * Investments in U.S. Government agency and U.S. Government sponsored enterprises As of December 31, 2016 Less than 12 months 12 months or longer Total Description of Securities Number of Securities Fair Value Gross Unrealized Losses Number of Securities Fair Value Gross Unrealized Losses Number of Securities Fair Value Gross Unrealized Losses (Dollars in thousands) Collateralized mortgage obligations (residential)* 66 $ 615,803 $ (9,459 ) 4 $ 36,333 $ (1,204 ) 70 $ 652,136 $ (10,663 ) Mortgage-backed securities (residential)* 57 622,797 (14,395 ) — — — 57 622,797 (14,395 ) Corporate securities 1 7,014 (2 ) 1 4,113 (447 ) 2 11,127 (449 ) Municipal securities 95 69,331 (1,537 ) — — — 95 69,331 (1,537 ) Mutual funds 3 13,058 (367 ) — — — 3 13,058 (367 ) Total 222 $ 1,328,003 $ (25,760 ) 5 $ 40,446 $ (1,651 ) 227 $ 1,368,449 $ (27,411 ) __________________________________ * Investments in U.S. Government agency and U.S. Government sponsored enterprises

Loans Receivable and Allowanc29

Loans Receivable and Allowance for Loan Losses (Tables)	3 Months Ended
	Mar. 31, 2017
Receivables [Abstract]
Summary of Loans Receivable by Major Category	The following is a summary of loans receivable by major category: March 31, 2017 December 31, 2016 (Dollars in thousands) Loan portfolio composition Real estate loans: Residential $ 58,166 $ 57,884 Commercial 7,948,844 7,842,573 Construction 284,178 254,113 Total real estate loans 8,291,188 8,154,570 Commercial business 1,696,895 1,832,021 Trade finance 143,298 154,928 Consumer and other 420,169 403,470 Total loans outstanding 10,551,550 10,544,989 Deferred loan fees, net (1,883 ) (1,657 ) Loans receivable 10,549,667 10,543,332 Allowance for loan losses (78,659 ) (79,343 ) Loans receivable, net of allowance for loan losses $ 10,471,008 $ 10,463,989
Loans and Leases Acquired, Accretable Yield Movement Schedule	The following table presents changes in the accretable discount on the PCI loans for the three months ended March 31, 2017 and 2016 : Three Months Ended March 31, 2017 2016 (Dollars in thousands) Balance at beginning of period $ 38,591 $ 23,777 Accretion (5,348 ) (3,029 ) Reclassification from nonaccretable difference 18,408 1,349 Balance at end of period $ 51,651 $ 22,097
Allowance for Loan Losses by Portfolio Segment	The following tables detail the activity in the allowance for loan losses by portfolio segment for the three months ended March 31, 2017 and 2016 : Legacy Loans Acquired Loans Total Real Estate Commercial Business Trade Finance Consumer and Other Real Estate Commercial Business Trade Finance Consumer and Other (Dollars in thousands) Three Months Ended March 31, 2017 Balance, beginning of period $ 38,956 $ 23,430 $ 1,897 $ 2,116 $ 12,791 $ 117 $ — $ 36 $ 79,343 Provision (credit) for loan losses 6,106 (2,884 ) 303 184 975 748 187 (19 ) 5,600 Loans charged off (1,154 ) (3,190 ) (1,576 ) (279 ) (336 ) (70 ) — — (6,605 ) Recoveries 21 123 — 1 25 149 — 2 321 Balance, end of period $ 43,929 $ 17,479 $ 624 $ 2,022 $ 13,455 $ 944 $ 187 $ 19 $ 78,659 Legacy Loans Acquired Loans Total Real Estate Commercial Business Trade Finance Consumer and Other Real Estate Commercial Business Trade Finance Consumer and Other (Dollars in thousands) Three Months Ended March 31, 2016 Balance, beginning of period $ 42,829 $ 16,332 $ 3,592 $ 556 $ 12,823 $ 214 $ — $ 62 $ 76,408 Provision (credit) for loan losses (1,218 ) 3,147 (1,507 ) 276 (82 ) (112 ) — (4 ) 500 Loans charged off (19 ) (621 ) — (65 ) (116 ) — — — (821 ) Recoveries 523 190 — 1 1 52 — 2 769 Balance, end of period $ 42,115 $ 19,048 $ 2,085 $ 768 $ 12,626 $ 154 $ — $ 60 $ 76,856 The following tables break out the allowance for loan losses and the recorded investment of loans outstanding by individually impaired, general valuation, and PCI impairment, by portfolio segment, at March 31, 2017 and December 31, 2016 : March 31, 2017 Legacy Loans Acquired Loans Total Real Estate Commercial Business Trade Finance Consumer and Other Real Estate Commercial Business Trade Finance Consumer and Other (Dollars in thousands) Allowance for loan losses: Individually evaluated for impairment $ 2,530 $ 2,357 $ — $ 40 $ 30 $ 122 $ — $ — $ 5,079 Collectively evaluated for impairment 41,399 15,122 624 1,982 1,289 822 187 19 61,444 PCI loans — — — — 12,136 — — — 12,136 Total $ 43,929 $ 17,479 $ 624 $ 2,022 $ 13,455 $ 944 $ 187 $ 19 $ 78,659 Loans outstanding: Individually evaluated for impairment $ 75,377 $ 28,421 $ 4,450 $ 715 $ 19,325 $ 1,019 $ — $ 272 $ 129,579 Collectively evaluated for impairment 5,474,703 1,065,952 59,131 206,933 2,538,765 541,586 76,541 198,095 10,161,706 PCI loans — — — — 183,018 59,917 3,176 14,154 260,265 Total $ 5,550,080 $ 1,094,373 $ 63,581 $ 207,648 $ 2,741,108 $ 602,522 $ 79,717 $ 212,521 $ 10,551,550 December 31, 2016 Legacy Loans Acquired Loans Total Real Estate Commercial Business Trade Finance Consumer and Other Real Estate Commercial Business Trade Finance Consumer and Other (Dollars in thousands) Allowance for loan losses: Individually evaluated for impairment $ 1,889 $ 4,420 $ 864 $ 50 $ 113 $ 73 $ — $ — $ 7,409 Collectively evaluated for impairment 37,067 19,010 1,033 2,066 548 44 — 36 59,804 PCI loans — — — — 12,130 — — — 12,130 Total $ 38,956 $ 23,430 $ 1,897 $ 2,116 $ 12,791 $ 117 $ — $ 36 $ 79,343 Loans outstanding: Individually evaluated for impairment $ 74,085 $ 34,783 $ 6,029 $ 733 $ 23,865 $ 435 $ — $ 431 $ 140,361 Collectively evaluated for impairment 5,271,262 1,079,348 75,365 179,961 2,597,200 650,710 70,535 206,802 10,131,183 PCI loans — — — — 188,158 66,745 2,999 15,543 273,445 Total $ 5,345,347 $ 1,114,131 $ 81,394 $ 180,694 $ 2,809,223 $ 717,890 $ 73,534 $ 222,776 $ 10,544,989
Impaired Financing Receivables	The recorded investment of individually impaired loans was as follows: March 31, 2017 December 31, 2016 (Dollars in thousands) With allocated specific allowance Without charge off $ 51,944 $ 59,638 With charge off 196 1,120 With no allocated specific allowance Without charge off 70,466 76,775 With charge off 6,973 2,828 Specific allowance on impaired loans (5,079 ) (7,409 ) Impaired loans, net of specific allowance $ 124,500 $ 132,952 The following tables detail the recorded investment of impaired loans (Legacy Loans and Acquired Loans that became impaired subsequent to being originated and acquired, respectfully) as of March 31, 2017 and December 31, 2016 and for the three months ended March 31, 2017 and 2016 . Loans with no related allowance are believed by management to be adequately collateralized. As of March 31, 2017 As of December 31, 2016 Total Impaired Loans Recorded Investment* Unpaid Contractual Principal Balance Related Allowance Recorded Investment* Unpaid Contractual Principal Balance Related Allowance (Dollars in thousands) With related allowance: Real estate—residential $ — $ — $ — $ — $ — $ — Real estate—commercial Retail 581 581 9 2,095 2,384 90 Hotel & motel 6,395 6,433 403 6,387 6,387 337 Gas station & car wash — — — 215 228 41 Mixed use 250 2,101 3 206 732 27 Industrial & warehouse 2,882 2,882 2 530 530 — Other 22,412 22,657 2,143 22,580 22,825 1,507 Real estate—construction — — — — — — Commercial business 19,538 19,698 2,479 26,543 27,161 4,493 Trade finance — — — 2,111 2,156 864 Consumer and other 82 82 40 91 91 50 Subtotal $ 52,140 $ 54,434 $ 5,079 $ 60,758 $ 62,494 $ 7,409 With no related allowance: Real estate—residential $ 1,465 $ 1,465 $ — $ 3,562 $ 3,562 $ — Real estate—commercial Retail 16,752 17,724 — 12,753 13,290 — Hotel & motel 6,273 12,221 — 6,122 11,735 — Gas station & car wash 4,160 6,634 — 5,043 7,449 — Mixed use 6,530 7,614 — 7,303 7,822 — Industrial & warehouse 8,498 8,574 — 9,673 9,748 — Other 15,648 16,911 — 20,181 21,492 — Real estate—construction 2,856 2,996 — 1,300 1,441 — Commercial business 9,902 13,509 — 8,675 9,472 — Trade finance 4,450 4,450 — 3,918 3,918 — Consumer and other 905 923 — 1,073 1,136 — Subtotal $ 77,439 $ 93,021 $ — $ 79,603 $ 91,065 $ — Total $ 129,579 $ 147,455 $ 5,079 $ 140,361 $ 153,559 $ 7,409 __________________________________ * Unpaid contractual principal balance less charge offs, interest collected applied to principal if on nonaccrual and purchase discounts. For the Three Months Ended March 31, 2017 For the Three Months Ended March 31, 2016 Total Impaired Loans Average Recorded Investment* Interest Income Recognized during Impairment Average Recorded Investment* Interest Income Recognized during Impairment (Dollars in thousands) With related allowance: Real estate—residential $ — $ — $ — $ — Real estate—commercial Retail 1,338 4 1,712 — Hotel & motel 6,391 43 4,611 57 Gas station & car wash 108 — 1,050 — Mixed use 228 2 563 2 Industrial & warehouse 1,706 32 560 6 Other 22,496 253 24,462 275 Real estate—construction — — — — Commercial business 23,041 195 35,742 265 Trade finance 1,055 — 10,314 94 Consumer and other 87 1 128 1 Subtotal $ 56,450 $ 530 $ 79,142 $ 700 With no related allowance: Real estate—residential $ 2,513 $ 28 $ — $ — Real estate—commercial Retail 14,752 159 11,105 100 Hotel & motel 6,198 7 7,849 22 Gas station & car wash 4,602 10 4,665 34 Mixed use 6,916 63 2,364 12 Industrial & warehouse 9,086 75 9,888 85 Other 17,915 130 12,712 90 Real estate—construction 2,078 20 1,355 — Commercial business 9,289 30 8,950 41 Trade finance 4,184 51 — — Consumer and other 989 7 1,228 7 Subtotal $ 78,522 $ 580 $ 60,116 $ 391 Total $ 134,972 $ 1,110 $ 139,258 $ 1,091 __________________________________ * Unpaid contractual principal balance less charge offs, interest collected applied to principal if on nonaccrual and purchase discounts. As of March 31, 2017 As of December 31, 2016 Impaired Acquired Loans Recorded Investment* Unpaid Contractual Principal Balance Related Allowance Recorded Investment* Unpaid Contractual Principal Balance Related Allowance (Dollars in thousands) With related allowance: Real estate—residential $ — $ — $ — $ — $ — $ — Real estate—commercial Retail 311 311 — 1,826 2,114 85 Hotel & motel 92 89 2 — — — Gas station & car wash — — — — — — Mixed use 250 2,101 3 136 136 2 Industrial & warehouse — — — — — — Other 333 337 25 337 341 26 Real estate—construction — — — — — — Commercial business 774 828 122 294 339 73 Trade finance — — — — — — Consumer and other — — — — — — Subtotal $ 1,760 $ 3,666 $ 152 $ 2,593 $ 2,930 $ 186 With no related allowance: Real estate—residential $ — $ — $ — $ 679 $ 679 $ — Real estate—commercial Retail 4,351 4,831 — 3,148 3,214 — Hotel & motel 4,840 7,352 — 4,767 7,171 — Gas station & car wash 618 804 — 1,568 1,815 — Mixed use 5,283 5,510 — 5,315 5,551 — Industrial & warehouse 65 65 — 66 66 — Other 3,182 3,853 — 6,023 6,752 — Real estate—construction — — — — — — Commercial business 245 313 — 141 386 — Trade finance — — — — — — Consumer and other 272 281 — 431 484 — Subtotal $ 18,856 $ 23,009 $ — $ 22,138 $ 26,118 $ — Total $ 20,616 $ 26,675 $ 152 $ 24,731 $ 29,048 $ 186 __________________________________ * Unpaid contractual principal balance less charge offs, interest collected applied to principal if on nonaccrual and purchase discounts. For the Three Months Ended March 31, 2017 For the Three Months Ended March 31, 2016 Impaired Acquired Loans Average Recorded Investment* Interest Income Recognized during Impairment Average Recorded Investment* Interest Income Recognized during Impairment (Dollars in thousands) With related allowance: Real estate—residential $ — $ — $ — $ — Real estate—commercial Retail 1,068 4 1,169 — Hotel & motel 46 — — — Gas station & car wash — — 509 — Mixed use 193 2 493 2 Industrial & warehouse — — — — Other 335 4 305 4 Real estate—construction — — — — Commercial business 534 5 576 3 Trade finance — — — — Consumer and other — — — — Subtotal $ 2,176 $ 15 $ 3,052 $ 9 With no related allowance: Real estate—residential $ 339 $ — $ — $ — Real estate—commercial Retail 3,750 31 2,571 26 Hotel & motel 4,803 4 6,882 17 Gas station & car wash 1,093 10 1,392 25 Mixed use 5,299 63 273 3 Industrial & warehouse 66 1 1,111 2 Other 4,603 13 3,826 14 Real estate—construction — — — — Commercial business 193 1 672 8 Trade finance — — — — Consumer and other 351 2 557 2 Subtotal $ 20,497 $ 125 $ 17,284 $ 97 Total $ 22,673 $ 140 $ 20,336 $ 106
Aging of Past Due Loans	The following tables present the recorded investment of past due loans by the number of days past due as of March 31, 2017 and December 31, 2016 by class of loans: As of March 31, 2017 Past Due and Accruing 30-59 Days 60-89 Days 90 or More Days Total Nonaccrual Loans (2) Total Delinquent and Nonaccrual Loans (Dollars in thousands) Legacy Loans: Real estate—residential $ — $ — $ — $ — $ — $ — Real estate—commercial Retail 938 — — 938 2,657 3,595 Hotel & motel 3,341 1,187 — 4,528 4,216 8,744 Gas station & car wash 947 — — 947 3,542 4,489 Mixed use — — — — 1,247 1,247 Industrial & warehouse 57 1,028 — 1,085 1,922 3,007 Other 4,046 1,031 — 5,077 3,114 8,191 Real estate—construction — — — — 1,300 1,300 Commercial business 640 666 — 1,306 9,155 10,461 Trade finance — — — — 528 528 Consumer and other 229 66 275 570 228 798 Subtotal $ 10,198 $ 3,978 $ 275 $ 14,451 $ 27,909 $ 42,360 Acquired Loans: (1) Real estate—residential $ — $ — $ — $ — $ — $ — Real estate—commercial Retail 1,156 653 — 1,809 1,578 3,387 Hotel & motel 1,546 — — 1,546 4,668 6,214 Gas station & car wash — — — — 47 47 Mixed use — 354 — 354 162 516 Industrial & warehouse 1,406 — — 1,406 — 1,406 Other 97 — — 97 2,096 2,193 Real estate—construction — — — — — — Commercial business 360 — — 360 435 795 Trade finance — — — — — — Consumer and other 684 — — 684 114 798 Subtotal $ 5,249 $ 1,007 $ — $ 6,256 $ 9,100 $ 15,356 TOTAL $ 15,447 $ 4,985 $ 275 $ 20,707 $ 37,009 $ 57,716 __________________________________ (1) Acquired Loans exclude PCI loans. (2) Nonaccrual loans exclude guaranteed portion of delinquent SBA loans that are in liquidation totaling $15.2 million . Includes nonaccrual loans less than 30 days past due totaling $15.6 million . As of December 31, 2016 Past Due and Accruing 30-59 Days 60-89 Days 90 or More Days Total Nonaccrual Loans (2) Total Delinquent and Nonaccrual Loans (Dollars in thousands) Legacy Loans: Real estate—residential $ — $ — $ — $ — $ — $ — Real estate—commercial Retail 480 — — 480 3,672 4,152 Hotel & motel 1,836 3,137 — 4,973 1,392 6,365 Gas station & car wash 362 — — 362 3,690 4,052 Mixed use — — — — 1,305 1,305 Industrial & warehouse — 697 — 697 1,922 2,619 Other 2,871 — — 2,871 4,007 6,878 Real estate—construction — 1,513 — 1,513 1,300 2,813 Commercial business 558 815 — 1,373 9,371 10,744 Trade finance — 500 — 500 2,056 2,556 Consumer and other 146 58 305 509 229 738 Subtotal $ 6,253 $ 6,720 $ 305 $ 13,278 $ 28,944 $ 42,222 Acquired Loans: (1) Real estate—residential $ — $ — $ — $ — $ 679 $ 679 Real estate—commercial Retail 1,611 — — 1,611 1,871 3,482 Hotel & motel 95 — — 95 4,501 4,596 Gas station & car wash 68 340 — 408 993 1,401 Mixed use — — — — 48 48 Industrial & warehouse 257 — — 257 — 257 Other 350 — — 350 2,144 2,494 Real estate—construction — — — — — — Commercial business 1,303 684 — 1,987 345 2,332 Trade finance — — — — — — Consumer and other 331 25 — 356 549 905 Subtotal $ 4,015 $ 1,049 $ — $ 5,064 $ 11,130 $ 16,194 TOTAL $ 10,268 $ 7,769 $ 305 $ 18,342 $ 40,074 $ 58,416 __________________________________ (1) Acquired Loans exclude PCI loans. (2) Nonaccrual loans exclude guaranteed portion of delinquent SBA loans that are in liquidation totaling $15.9 million .
Risk Category of Loans by Class of Loans	The following tables present the recorded investment of risk ratings for Legacy and Acquired Loans as of March 31, 2017 and December 31, 2016 by class of loans: As of March 31, 2017 Pass Special Mention Substandard Doubtful Total (Dollars in thousands) Legacy Loans: Real estate—residential $ 36,883 $ 219 $ 1,465 $ — $ 38,567 Real estate—commercial Retail 1,373,943 19,057 17,634 — 1,410,634 Hotel & motel 1,171,476 15,238 9,010 — 1,195,724 Gas station & car wash 637,755 10,280 3,542 — 651,577 Mixed use 396,870 957 1,408 — 399,235 Industrial & warehouse 515,640 21,839 14,970 — 552,449 Other 1,050,557 22,967 35,864 — 1,109,388 Real estate—construction 175,895 13,755 2,856 — 192,506 Commercial business 1,000,577 18,973 74,590 233 1,094,373 Trade finance 53,839 4,142 5,600 — 63,581 Consumer and other 206,835 4 809 — 207,648 Subtotal $ 6,620,270 $ 127,431 $ 167,748 $ 233 $ 6,915,682 Acquired Loans: Real estate—residential $ 19,330 $ 269 $ — $ — $ 19,599 Real estate—commercial Retail 750,436 11,996 17,642 — 780,074 Hotel & motel 316,099 11,955 17,562 — 345,616 Gas station & car wash 243,494 8,918 9,190 — 261,602 Mixed use 117,453 3,578 11,599 8 132,638 Industrial & warehouse 314,060 14,694 16,453 298 345,505 Other 712,484 28,529 23,389 — 764,402 Real estate—construction 91,672 — — — 91,672 Commercial business 549,059 17,666 35,700 97 602,522 Trade finance 76,541 17 3,159 — 79,717 Consumer and other 204,689 914 5,270 1,648 212,521 Subtotal $ 3,395,317 $ 98,536 $ 139,964 $ 2,051 $ 3,635,868 Total $ 10,015,587 $ 225,967 $ 307,712 $ 2,284 $ 10,551,550 As of December 31, 2016 Pass Special Mention Substandard Doubtful Total (Dollars in thousands) Legacy Loans: Real estate—residential $ 34,283 $ 223 $ 2,883 $ — $ 37,389 Real estate—commercial Retail 1,303,452 18,929 15,430 — 1,337,811 Hotel & motel 1,187,709 12,763 9,026 — 1,209,498 Gas station & car wash 643,282 7,259 3,690 — 654,231 Mixed use 375,312 — 1,467 — 376,779 Industrial & warehouse 478,528 29,830 13,745 — 522,103 Other 969,024 22,220 41,017 — 1,032,261 Real estate—construction 159,230 14,745 1,300 — 175,275 Commercial business 1,032,232 15,919 65,885 95 1,114,131 Trade finance 68,051 5,673 7,670 — 81,394 Consumer and other 179,864 1 829 — 180,694 Subtotal $ 6,430,967 $ 127,562 $ 162,942 $ 95 $ 6,721,566 Acquired Loans: Real estate—residential $ 18,007 $ 1,809 $ 679 $ — $ 20,495 Real estate—commercial Retail 772,465 9,860 21,110 — 803,435 Hotel & motel 328,396 5,419 18,233 — 352,048 Gas station & car wash 249,379 8,437 11,338 — 269,154 Mixed use 118,643 3,105 12,505 8 134,261 Industrial & warehouse 321,040 31,819 9,048 315 362,222 Other 736,385 23,286 29,099 — 788,770 Real estate—construction 78,838 — — — 78,838 Commercial business 649,186 31,340 37,265 99 717,890 Trade finance 70,535 61 2,938 — 73,534 Consumer and other 214,437 958 5,949 1,432 222,776 Subtotal $ 3,557,311 $ 116,094 $ 148,164 $ 1,854 $ 3,823,423 Total $ 9,988,278 $ 243,656 $ 311,106 $ 1,949 $ 10,544,989
Loans Sold From Loans Held For Investment	Three Months Ended March 31, 2017 2016 Transfer of loans receivable to held for sale (Dollars in thousands) Real estate - commercial $ 8,699 $ — Commercial business 752 — Consumer — 450 Total $ 9,451 $ 450
Allowance for Loan Losses and Impaired Loans, Qualitative and Quantitative Analysis	The following table presents breakdown of loans by impairment method at March 31, 2017 and December 31, 2016 : As of March 31, 2017 Real Estate - Residential Real Estate - Commercial Real Estate - Construction Commercial Business Trade Finance Consumer and Other Total (Dollars in thousands) Impaired loans (gross carrying value) $ 1,465 $ 90,381 $ 2,856 $ 29,440 $ 4,450 $ 987 $ 129,579 Specific allowance $ — $ 2,560 $ — $ 2,479 $ — $ 40 $ 5,079 Allowance coverage ratio N/A 2.83 % N/A 8.42 % N/A 4.05 % 3.92 % Other loans $ 56,701 $ 7,858,463 $ 281,322 $ 1,667,455 $ 138,848 $ 419,182 $ 10,421,971 General allowance $ 287 $ 52,827 $ 1,710 $ 15,944 $ 811 $ 2,001 $ 73,580 Allowance coverage ratio 0.51 % 0.67 % 0.61 % 0.96 % 0.58 % 0.48 % 0.71 % Total loans $ 58,166 $ 7,948,844 $ 284,178 $ 1,696,895 $ 143,298 $ 420,169 $ 10,551,550 Total allowance for loan losses $ 287 $ 55,387 $ 1,710 $ 18,423 $ 811 $ 2,041 $ 78,659 Allowance coverage ratio 0.49 % 0.70 % 0.60 % 1.09 % 0.57 % 0.49 % 0.75 % As of December 31, 2016 Real Estate - Residential Real Estate - Commercial Real Estate - Construction Commercial Business Trade Finance Consumer and Other Total (Dollars in thousands) Impaired loans (gross carrying value) $ 3,562 $ 93,088 $ 1,300 $ 35,218 $ 6,029 $ 1,164 $ 140,361 Specific allowance $ — $ 2,002 $ — $ 4,493 $ 864 $ 50 $ 7,409 Allowance coverage ratio N/A 2.15 % N/A 12.76 % 14.33 % 4.30 % 5.28 % Other loans $ 54,322 $ 7,749,485 $ 252,813 $ 1,796,803 $ 148,899 $ 402,306 $ 10,404,628 General allowance $ 209 $ 47,915 $ 1,621 $ 19,054 $ 1,033 $ 2,102 $ 71,934 Allowance coverage ratio 0.38 % 0.62 % 0.64 % 1.06 % 0.69 % 0.52 % 0.69 % Total loans $ 57,884 $ 7,842,573 $ 254,113 $ 1,832,021 $ 154,928 $ 403,470 $ 10,544,989 Total allowance for loan losses $ 209 $ 49,917 $ 1,621 $ 23,547 $ 1,897 $ 2,152 $ 79,343 Allowance coverage ratio 0.36 % 0.64 % 0.64 % 1.29 % 1.22 % 0.53 % 0.75 %
Troubled Debt Restructurings	The following table presents the recorded investment of loans modified as TDRs during the three months ended March 31, 2017 and March 31, 2016 by class of loans: Three Months Ended March 31, 2017 Three Months Ended March 31, 2016 Number of Loans Pre- Modification Post- Modification Number of Loans Pre- Modification Post- Modification (Dollars in thousands) Legacy Loans: Real estate—commercial Retail — $ — $ — — $ — $ — Hotel & motel — — — — — — Gas station & car wash — — — — — — Mixed use — — — — — — Industrial & warehouse — — — — — — Other 1 482 482 — — — Real estate - construction — — — — — — Commercial business 2 1,681 1,218 6 11,088 7,039 Trade finance — — — 1 2,199 1,586 Consumer and other — — — — — — Subtotal 3 $ 2,163 $ 1,700 7 $ 13,287 $ 8,625 Acquired Loans: Real estate—commercial Retail — $ — $ — — $ — $ — Hotel & motel — — — — — — Gas station & car wash — — — — — — Mixed use — — — — — — Industrial & warehouse — — — — — — Other 1 93 97 — — — Real estate—construction — — — — — — Commercial business 2 649 561 — — — Trade finance — — — — — — Consumer and other — — — 1 30 29 Subtotal 3 $ 742 $ 658 1 $ 30 $ 29 Total 6 $ 2,905 $ 2,358 8 $ 13,317 $ 8,654 A summary of the recorded investment of TDRs on accrual and nonaccrual status by type of concession as of March 31, 2017 and December 31, 2016 is presented below: As of March 31, 2017 TDRs on Accrual Status TDRs on Nonaccrual Status Total Real Estate Commercial Business Other Total Real Estate Commercial Business Other Total (Dollars in thousands) Payment concession $ 16,249 $ 233 $ — $ 16,482 $ 2,503 $ 1,270 $ — $ 3,773 $ 20,255 Maturity / amortization concession 2,302 17,969 4,499 24,770 1,774 4,789 853 7,416 32,186 Rate concession 6,068 1,579 85 7,732 5,567 365 — 5,932 13,664 Total $ 24,619 $ 19,781 $ 4,584 $ 48,984 $ 9,844 $ 6,424 $ 853 $ 17,121 $ 66,105 As of December 31, 2016 TDRs on Accrual Status TDRs on Nonaccrual Status Total Real Estate Commercial Business Other Total Real Estate Commercial Business Other Total (Dollars in thousands) Payment concession $ 16,358 $ 29 $ — $ 16,387 $ 4,417 $ 1,717 $ — $ 6,134 $ 22,521 Maturity / amortization concession 1,840 17,471 4,600 23,911 1,313 6,130 2,287 9,730 33,641 Rate concession 6,856 1,665 55 8,576 5,590 387 155 6,132 14,708 Total $ 25,054 $ 19,165 $ 4,655 $ 48,874 $ 11,320 $ 8,234 $ 2,442 $ 21,996 $ 70,870
Summary of Troubled Debt Restructurings with Subsequent Payment Default	The following table presents loans modified as TDRs within the previous twelve months and have subsequently had a payment default during the three months ended March 31, 2017 : Three Months Ended March 31, 2017 Three Months Ended March 31, 2016 Number of Loans Balance Number of Loans Balance (Dollars In thousands) Legacy Loans: Real estate—commercial Retail — $ — — $ — Hotel & motel — — — — Gas station & car wash — — 2 729 Mixed Use — — — — Industrial & warehouse — — — — Other — — — — Real estate—construction — — — — Commercial business 1 102 6 2,272 Trade finance — — — — Consumer and other — — — — Subtotal 1 $ 102 8 $ 3,001 Acquired Loans: Real estate—commercial Retail — $ — — $ — Hotel & motel — — — — Gas station & car wash — — — — Mixed Use — — 1 62 Industrial & warehouse — — — — Other — — — — Real estate—construction — — — — Commercial business 1 11 — — Trade finance — — — — Consumer and other — — — — Subtotal 1 $ 11 1 $ 62 Total 2 $ 113 9 $ 3,063
Covered Non-performing Assets	The covered nonperforming assets at March 31, 2017 and December 31, 2016 were as follows: March 31, 2017 December 31, 2016 (Dollars in thousands) Covered loans on nonaccrual status $ 181 $ 189 Covered OREO 1,400 2,306 Total covered nonperforming assets $ 1,581 $ 2,495 Acquired covered loans $ 32,010 $ 32,367

Borrowings (Tables)

Borrowings (Tables)	3 Months Ended
	Mar. 31, 2017
Debt Disclosure [Abstract]
Contractual Maturities for FHLB-SF Borrowings	At March 31, 2017 , the contractual maturities for FHLB advances were as follows: Contractual Maturity/ (Dollars in thousands) Due within one year $ 220,103 $ 220,103 Due after one year through five years 483,747 483,747 Total $ 703,850 $ 703,850

Subordinated Debentures (Tables

Subordinated Debentures (Tables)	3 Months Ended
	Mar. 31, 2017
Subordinated Borrowings [Abstract]
Summary of Trust Preferred Securities and Debentures	The following table is a summary of trust preferred securities and Debentures at March 31, 2017 : Issuance Trust Issuance Date Trust Preferred Security Amount Carrying Value of Subordinated Debentures Rate Type Current Rate Maturity Date (Dollars in thousands) Nara Capital Trust III 06/05/2003 $ 5,000 $ 5,155 Variable 4.28% 06/15/2033 Nara Statutory Trust IV 12/22/2003 5,000 5,155 Variable 3.87% 01/07/2034 Nara Statutory Trust V 12/17/2003 10,000 10,310 Variable 4.10% 12/17/2033 Nara Statutory Trust VI 03/22/2007 8,000 8,248 Variable 2.78% 06/15/2037 Center Capital Trust I 12/30/2003 18,000 13,684 Variable 3.87% 01/07/2034 Wilshire Statutory Trust II 03/17/2005 20,000 15,158 Variable 2.94% 03/17/2035 Wilshire Statutory Trust III 09/15/2005 15,000 10,635 Variable 2.53% 09/15/2035 Wilshire Statutory Trust IV 07/10/2007 25,000 17,275 Variable 2.51% 09/15/2037 Saehan Capital Trust I 03/30/2007 20,000 14,447 Variable 2.77% 06/30/2037 Total $ 126,000 $ 100,067

Derivative Financial Instrume32

Derivative Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Other Derivatives Not Designated as Hedging Instruments, Statements of Financial Performance and Financial Position, Location	At March 31, 2017 and December 31, 2016 , the following interest rate swaps related to our loan hedging program were outstanding: As of March 31, 2017 As of December 31, 2016 (Dollars in thousands) Interest rate swaps on loans with loan customers Notional amount $ 263,153 $ 223,098 Weighted average remaining term 7.6 years 7.4 years Received fixed rate (weighted average) 4.34 % 4.29 % Pay variable rate (weighted average) 3.21 % 3.06 % Estimated fair value $ (1,623 ) $ (1,565 ) Back to back interest rate swaps with correspondent banks Notional amount $ 263,153 $ 223,098 Weighted average remaining term 7.6 years 7.4 years Received variable rate (weighted average) 3.21 % 3.06 % Pay fixed rate (weighted average) 4.34 % 4.29 % Estimated fair value $ 1,623 $ 1,565
Schedule of Derivative Instruments	The following table reflects the notional amount and fair value of mortgage banking derivatives for the dates indicated: As of March 31, 2017 As of December 31, 2016 (Dollars in thousands) Notional Amount Fair Value Notional Amount Fair Value Assets: Interest rate lock commitments $ 6,801 $ 113 $ 11,168 $ 130 Forward sale contracts related to mortgage banking $ 626 $ — $ 3,223 $ 17 Liabilities: Interest rate lock commitments $ — $ — $ 1,810 $ (3 ) Forward sale contracts related to mortgage banking $ 6,175 $ (40 ) $ 9,755 $ (38 ) The following table reflects the notional amount and fair value of mortgage banking derivatives for the date indicated: As of March 31, 2017 As of December 31, 2016 Notional Amount Fair Value Notional Amount Fair Value (Dollars in thousands) Assets: Interest rate lock commitments $ 6,801 $ 113 $ 11,168 $ 130 Forward sale contracts related to mortgage banking $ 626 $ — $ 3,223 $ 17 Liabilities: Interest rate lock commitments $ — $ — $ 1,810 $ (3 ) Forward sale contracts related to mortgage banking $ 6,175 $ (40 ) $ 9,755 $ (38 )

Goodwill, Intangible Assets, 33

Goodwill, Intangible Assets, and Servicing Assets (Tables)	3 Months Ended
	Mar. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Finite-Lived Intangible Assets	The following table provides information regarding the core deposit intangibles at March 31, 2017 : As of March 31, 2017 Amortization period Gross Carrying Amount Accumulated Amortization (Dollars in thousands) Core deposit—Center Financial acquisition 7 years $ 4,100 $ (3,755 ) Core deposit—PIB acquisition 7 years 604 (484 ) Core deposit—Foster acquisition 10 years 2,763 (1,417 ) Core deposit—Wilshire acquisition 10 years 18,138 (1,399 ) Total $ 25,605 $ (7,055 )
Schedule of Servicing Assets	The changes in servicing assets for the three months ended March 31, 2017 and 2016 were as follows: Three Months Ended March 31, 2017 2016 (Dollars in thousands) Balance at beginning of period $ 26,457 $ 12,000 Additions through originations of servicing assets 1,296 777 Amortization (1,812 ) (921 ) Balance at end of period $ 25,941 $ 11,856
Summary of Fair Value Inputs	The inputs used in determining the impairment of the servicing assets at March 31, 2017 and December 31, 2016 are presented below. March 31, 2017 December 31, 2016 SBA Servicing Assets: Weighted-average discount rate 10.29% 9.85% Constant prepayment rate 8.18% 8.05% Mortgage Servicing Assets: Weighted-average discount rate 9.66% 7.25% Constant prepayment rate 7.71% 13.77%

Income Taxes Reconciliation of

Income Taxes Reconciliation of effective tax rate (Tables)	3 Months Ended
	Mar. 31, 2017
Income Tax Disclosure [Abstract]
Schedule of Effective Income Tax Rate Reconciliation	A reconciliation of the difference between the federal statutory income tax rate and the effective tax rate is shown in the following table for the three months ended March 31, 2017 and March 31, 2016 : March 31, 2017 March 31, 2016 Statutory tax rate 35.00 % 35.00 % State taxes-net of federal tax effect 7.18 % 7.32 % Affordable housing partnership investment tax credit (2.93 )% (1.29 )% Bank owned life insurance (0.16 )% (0.24 )% Municipal securities (0.25 )% (0.21 )% Nondeductible transaction costs 0.08 % 0.48 % Other (0.08 )% (0.37 )% Effective income tax rate 38.84 % 40.69 %

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2017
Fair Value Disclosures [Abstract]
Assets and Liabilities Measured at Fair Value on a Recurring Basis	Assets and liabilities measured at fair value on a recurring basis are summarized below: Fair Value Measurements at the End of the Reporting Period Using March 31, 2017 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) (Dollars in thousands) Assets: Securities available for sale: GSE debt securities $ 9,998 $ — $ 9,998 $ — GSE collateralized mortgage obligations (residential) 726,619 — 726,619 — GSE mortgage-backed securities (residential) 732,692 — 732,692 — Corporate securities 4,313 — 4,313 — Municipal securities 97,254 — 96,126 1,128 Mutual funds 13,070 13,070 — — Interest rate swaps (1,623 ) — (1,623 ) — Mortgage banking derivatives 113 — 113 — Liabilities: Interest rate swaps (1,623 ) — (1,623 ) — Mortgage banking derivatives 40 — 40 — Fair Value Measurements at the End of the Reporting Period Using December 31, 2016 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) (Dollars in thousands) Assets: Securities available for sale: GSE debt securities $ 12,008 $ — $ 12,008 $ — GSE collateralized mortgage obligations (residential) 705,667 — 705,667 — GSE mortgage-backed securities (residential) 728,041 — 728,041 — Corporate securities 11,127 — 11,127 — Municipal securities 86,839 — 85,700 1,139 Mutual funds 13,058 13,058 — — Interest rate swaps (1,565 ) — (1,565 ) — Mortgage banking derivatives 147 — 147 — Liabilities: Interest rate swaps (1,565 ) — (1,565 ) — Mortgage banking derivatives 41 — 41 —
Schedule of Derivative Instruments	The following table reflects the notional amount and fair value of mortgage banking derivatives for the dates indicated: As of March 31, 2017 As of December 31, 2016 (Dollars in thousands) Notional Amount Fair Value Notional Amount Fair Value Assets: Interest rate lock commitments $ 6,801 $ 113 $ 11,168 $ 130 Forward sale contracts related to mortgage banking $ 626 $ — $ 3,223 $ 17 Liabilities: Interest rate lock commitments $ — $ — $ 1,810 $ (3 ) Forward sale contracts related to mortgage banking $ 6,175 $ (40 ) $ 9,755 $ (38 ) The following table reflects the notional amount and fair value of mortgage banking derivatives for the date indicated: As of March 31, 2017 As of December 31, 2016 Notional Amount Fair Value Notional Amount Fair Value (Dollars in thousands) Assets: Interest rate lock commitments $ 6,801 $ 113 $ 11,168 $ 130 Forward sale contracts related to mortgage banking $ 626 $ — $ 3,223 $ 17 Liabilities: Interest rate lock commitments $ — $ — $ 1,810 $ (3 ) Forward sale contracts related to mortgage banking $ 6,175 $ (40 ) $ 9,755 $ (38 )
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation	The table below presents a reconciliation and income statement classification of gains and losses for all assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the three months ended March 31, 2017 : Three Months Ended March 31, 2017 2016 (Dollars in thousands) Beginning Balance, January 1 $ 1,139 $ 1,166 Total (losses) or gains included in other comprehensive income (11 ) 43 Ending Balance, March 31 $ 1,128 $ 1,209
Assets Measured at Fair Value on a Non-recurring Basis	Assets measured at fair value on a non-recurring basis are summarized below: Fair Value Measurements at the End of the Reporting Period Using March 31, 2017 Quoted Prices Significant Significant (Dollars in thousands) Assets: Impaired loans at fair value: Real estate loans $ 65,125 $ — $ — $ 65,125 Commercial business 9,407 — — 9,407 Trade finance 4,365 — — 4,365 Consumer 97 — — 97 Loans held for sale, net 6,571 — 6,571 — OREO 19,096 — — 19,096 Fair Value Measurements at the End of the Reporting Period Using December 31, 2016 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) (Dollars in thousands) Assets: Impaired loans at fair value: Real estate loans $ 58,882 $ — $ — $ 58,882 Commercial business 6,563 — — 6,563 Trade Finance — — — — Consumer 253 — — 253 Impaired loans held for sale, net 3,788 — 3,788 — OREO 21,990 — — 21,990 For assets measured at fair value on a non-recurring basis, the total net gains (losses), which include charge offs, recoveries, specific reserves, and recognized gains and losses on sales are summarized below: For the Three Months Ended March 31, 2017 2016 (Dollars in thousands) Assets: Impaired loans at fair value: Real estate loans $ (2,002 ) $ 309 Commercial business (974 ) (2,672 ) Trade Finance (712 ) 1,296 Consumer (266 ) (62 ) Impaired loans held for sale, net 420 15 OREO (595 ) (577 )
Carrying Amounts and Estimated Fair Values of Financial Instruments	Carrying amounts and estimated fair values of financial instruments, not previously presented, at March 31, 2017 and December 31, 2016 were as follows: March 31, 2017 Carrying Estimated Fair Value Measurement Using (Dollars in thousands) Financial Assets: Cash and cash equivalents $ 461,068 $ 461,068 Level 1 Interest bearing deposits in other financial institutions and other investments 43,958 43,630 Level 2/3 Loans held for sale 19,141 20,291 Level 2 Loans receivable—net 10,471,008 10,633,834 Level 3 FHLB stock 21,203 N/A N/A Accrued interest receivable 25,683 25,683 Level 2/3 Customers’ liabilities on acceptances 2,771 2,771 Level 2 Financial Liabilities: Noninterest bearing deposits $ 2,963,947 $ 2,963,947 Level 2 Saving and other interest bearing demand deposits 3,771,155 3,771,155 Level 2 Time deposits 3,968,675 3,963,545 Level 2 FHLB advances 703,850 698,287 Level 2 Subordinated debentures 100,067 100,067 Level 2 Accrued interest payable 10,592 10,592 Level 2 Servicing Assets 25,941 25,941 Level 3 Acceptances outstanding 2,771 2,771 Level 2 December 31, 2016 Carrying Estimated Fair Value Measurement Using (Dollars in thousands) Financial Assets: Cash and cash equivalents $ 437,334 $ 437,334 Level 1 Interest bearing deposits in other financial institutions and other investments 44,202 43,773 Level 2/3 Loans held for sale 22,785 24,492 Level 2 Loans receivable—net 10,463,989 10,666,642 Level 3 FHLB stock 21,964 N/A N/A Accrued interest receivable 26,880 26,880 Level 2/3 Customers’ liabilities on acceptances 2,899 2,899 Level 2 Financial Liabilities: Noninterest bearing deposits $ 2,900,241 $ 2,900,241 Level 2 Saving and other interest bearing demand deposits 3,703,352 3,703,352 Level 2 Time deposits 4,038,442 4,036,664 Level 2 FHLB advances 754,290 749,486 Level 2 Subordinated debentures 99,808 99,808 Level 2 Accrued interest payable 10,863 10,863 Level 2 Servicing Assets 26,457 26,457 Level 3 Acceptances outstanding 2,899 2,899 Level 2

Stockholders_ Equity (Tables)

Stockholders’ Equity (Tables)	3 Months Ended
	Mar. 31, 2017
Stockholders’ Equity and Regulatory Matters [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	The following table presents the quarterly changes to accumulated other comprehensive (loss) income for the three months ended March 31, 2017 and March 31, 2016 : Three months ended, March 31, 2017 March 31, 2016 (Dollars in thousands) Balance at beginning of period $ (14,657 ) $ (1,832 ) Unrealized gains on securities available for sale and interest only strips 3,132 15,592 Tax effect 1,324 6,605 Total other comprehensive income 1,808 8,987 Balance at end of period $ (12,849 ) $ 7,155 For the three months ended March 31, 2017 and March 31, 2016 there were no reclassifications out of accumulated other comprehensive (loss) income. eholders received 0.7034 shares of the Company’s common stock for each share of Wilshire stock owned. Based on this exchange ratio, 55.5 million shares of the Company’s common stock were issued to Wilshire shareholders at $15.37 per share, the closing price of the Company’s stock on July 29, 2016. As a result, $852.9 million in common stock was issued as consideration in the transaction and $3.4 million in additional paid-in capital was recorded to account for the fair value of stock options assumed. Total stockholders’ equity at March 31, 2017 was $1.88 billion , compared to $1.86 billion at December 31, 2016. The Company assumed certain warrants (related to the TARP Capital Purchase Plan) to purchase shares of the Company’s common stock. On May 20, 2015, the U.S. Treasury Department completed an auction to sell certain of its warrant positions, and the Company submitted the winning bid to repurchase an outstanding warrant to purchase 350,767 shares of the Company’s common stock. The Company repurchased this warrant for $1.2 million . As of March 31, 2017 , the U.S. Treasury Department held one remaining warrant for the purchase of 19,963 shares of the Company’s common stock. The Company paid a quarterly dividend of $0.12 per common share for the first quarter of 2017 compared to $0.11 per common share for the first quarter of 2016. The following table presents the quarterly changes to accumulated other comprehensive (loss) income for the three months ended March 31, 2017 and March 31, 2016 : Three months ended, March 31, 2017 March 31, 2016 (Dollars in thousands) Balance at beginning of period $ (14,657 ) $ (1,832 ) Unrealized gains on securities available for sale and interest only strips 3,132 15,592 Tax effect 1,324 6,605 Total other comprehensive income 1,808 8,987 Balance at end of period $ (12,849 ) $ 7,155 For the three months ended March 31, 2017 and March 31, 2016 there were no reclassifications out of accumulated other comprehensive (loss) income.

Regulatory Matters (Tables)

Regulatory Matters (Tables)	3 Months Ended
	Mar. 31, 2017
Banking and Thrift [Abstract]
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations	Actual Required Minimum Capital Adequacy With Capital Buffer Required Amount Ratio Amount Ratio Amount Ratio Amount Ratio (Dollars in thousands) As of March 31, 2017 Common equity tier 1 capital (to risk weighted assets): Company $ 1,413,592 12.22 % $ 520,711 4.50 % $ 665,353 5.75 % N/A N/A Bank $ 1,489,239 12.88 % $ 520,425 4.50 % $ 664,987 5.75 % $ 751,724 6.50 % Total capital (to risk-weighted assets): Company $ 1,591,852 13.76 % $ 925,708 8.00 % $ 1,070,350 9.25 % N/A N/A Bank $ 1,571,333 13.59 % $ 925,199 8.00 % $ 1,069,762 9.25 % $ 1,156,499 10.00 % Tier I capital (to risk-weighted assets): Company $ 1,509,758 13.05 % $ 694,281 6.00 % $ 838,923 7.25 % N/A N/A Bank $ 1,489,239 12.88 % $ 693,899 6.00 % $ 838,462 7.25 % $ 925,199 8.00 % Tier I capital (to average assets): Company $ 1,509,758 11.72 % $ 515,352 4.00 % N/A N/A N/A N/A Bank $ 1,489,239 11.56 % $ 515,212 4.00 % N/A N/A $ 644,014 5.00 %

Basis of Presentation Basis o38

Basis of Presentation Basis of Presentation (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Entity Information [Line Items]
Income Tax Expense (Benefit)	$ 22,999	$ 16,210
Company
Entity Information [Line Items]
Income Tax Expense (Benefit)	$ 73	$ 9

Mergers and Acquisitions - Addi

Mergers and Acquisitions - Additional Information (Details)	Jul. 29, 2016USD ($)branchshares	Mar. 31, 2017USD ($)statebranch	Dec. 31, 2016USD ($)	Mar. 31, 2016USD ($)
Business Acquisition [Line Items]
Branches operated | branch		85
States in which entity operates | state		9
Loans receivable, Net		$ 10,471,008,000	$ 10,463,989,000
Merger and integration expenses		947,000		$ 1,207,000
Wilshire Bancorp, Inc
Business Acquisition [Line Items]
Fair value of acquired impaired loans	$ 243,100,000
Branches operated | branch	35
Assets acquired	$ 4,630,000,000
Goodwill, Purchase Accounting Adjustments			(1,400,000)
Goodwill, Period Increase (Decrease)		978,000	(1,400,000)
Loans acquired	3,800,807,000
Deposits acquired	$ 3,812,367,000
Entity shares Issued per acquiree share | shares	0.7034
Stock issued for acquisitions | shares	55,500,000
Cash paid for fractional shares	$ 3,000
Consideration paid	856,312,000
Loans receivable, gross	4,720,000,000		5,670,000,000
Loans receivable, Net	$ 3,420,000,000		$ 3,590,000,000
Wilshire Bancorp, Inc | Other real estate owned [Member]
Business Acquisition [Line Items]
Goodwill, Purchase Accounting Adjustments		(1,700,000)
Wilshire Bancorp, Inc | Deferred Tax Assets [Member]
Business Acquisition [Line Items]
Goodwill, Purchase Accounting Adjustments		$ (716,000)

Mergers and Acquisitions - Summ

Mergers and Acquisitions - Summary of Assets Acquired and Liabilities Assumed (Details) - USD ($)	Jul. 29, 2016	Mar. 31, 2017	Dec. 31, 2016
Liabilities Assumed:
Excess of consideration paid over fair value of net assets acquired (goodwill)		$ 463,975,000	$ 462,997,000
Wilshire Bancorp, Inc
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Hope common stock issued in exchange for Wilshire common stock	$ 852,939,000
Cash paid for fractional shares	3,000
Hope stock options issued in exchange Wilshire stock options	3,370,000
Total consideration paid	856,312,000
Assets Acquired:
Cash and cash equivalents	100,127,000
Investment securities available for sale	478,938,000
Loans receivable	3,800,807,000
FRB and FHLB stock	16,539,000
OREO	13,173,000
Premises and equipment	16,812,000
Bank owned life insurance	25,240,000
Servicing assets	16,203,000
Low income housing tax credit investments	47,111,000
Core deposit intangibles	18,138,000
Deferred tax assets, net	18,174,000
Other assets	76,818,000
Liabilities Assumed:
Deposits	(3,812,367,000)
Borrowings	(206,282,000)
Subordinated debentures	(56,942,000)
Other liabilities	(54,751,000)
Total identifiable net assets	497,738,000
Excess of consideration paid over fair value of net assets acquired (goodwill)	$ 358,574,000	$ 358,600,000

Mergers and Acquisitions - Acqu

Mergers and Acquisitions - Acquisition Related Expenses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Business Acquisition [Line Items]
Total merger and integration expenses	$ 947	$ 1,207
Merger and Integration Expense
Business Acquisition [Line Items]
Total merger and integration expenses	947	1,207
Merger and Integration Expense | Wilshire
Business Acquisition [Line Items]
Total merger and integration expenses	401	1,183
Merger and Integration Expense | U & I Financial Corp [Member]
Business Acquisition [Line Items]
Total merger and integration expenses	522	0
Merger and Integration Expense | Other
Business Acquisition [Line Items]
Total merger and integration expenses	$ 24	$ 24

Stock-Based Compensation - Plan

Stock-Based Compensation - Plan Description (Details) - shares	Jul. 29, 2016	Mar. 31, 2017	Sep. 01, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant (in shares)		1,890,563
Restricted stock, performance shares and performance units | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock, restriction period		1 year
Time based vesting of grants | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock, restriction period		3 years
BBCN 2007 Plan | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Purchase price of common stock, percent		100.00%
BBCN 2007 Plan | Stock options and stock appreciation rights
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Contractual term		10 years
BBCN 2007 Plan | Stock options and stock appreciation rights | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		3 years
BBCN 2007 Plan | Stock options and stock appreciation rights | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		5 years
2016 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized			2,400,000
2016 Stock Incentive Plan | Nonemployee director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Contractual term		10 years
2016 Stock Incentive Plan | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Purchase price of common stock, percent		100.00%
Wilshire Bancorp, Inc
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Entity shares Issued per acquiree share	0.7034

Stock-Based Compensation - Stoc

Stock-Based Compensation - Stock Option Activity (Details) - Stock options	3 Months Ended
	Mar. 31, 2017USD ($)$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding - beginning of period (in shares) | shares	1,624,227
Granted (in shares) | shares	0
Exercised (in shares) | shares	21,307
Expired (in shares) | shares	(1,530)
Forfeited (in shares) | shares	0
Outstanding - end of period (in shares) | shares	1,601,390
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Outstanding - beginning of period, Weighted-Average Exercise Price Per Share (in dollars per share) | $ / shares	$ 15.30
Granted, Weighted-Average Exercise Price Per Share (in dollars per share) | $ / shares	0
Exercised, Weighted-Average Exercise Price Per Share (in dollars per share) | $ / shares	11.07
Expired, Weighted-Average Exercise Price Per Share (in dollars per share) | $ / shares	15.34
Forfeited, Weighted-Average Exercise Price Per Share (in dollars per share) | $ / shares	0
Outstanding - end of period, Weighted-Average Exercise Price Per Share (in dollars per share) | $ / shares	$ 15.36
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Options exercisable - end of period (in shares) | shares	866,548
Options exercisable, Weighted-Average Exercise Price Per Share (in dollars per share) | $ / shares	$ 14.02
Outstanding, Weighted-Average Remaining Contractual Life (Years)	6 years 4 months 25 days
Options exercisable, Weighted-Average Remaining Contractual Life (Years)	4 years 1 month 18 days
Outstanding, Aggregate Intrinsic Value | $	$ 6,861,205
Options exercisable, Aggregate Intrinsic Value | $	$ 5,217,790

Stock-Based Compensation - Rest

Stock-Based Compensation - Restricted and Performance Unit Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]
Allocated share-based compensation expense	$ 746	$ 22
Tax benefit from compensation expense	$ 290	0
Retricted and performance unit activity
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Outstanding - beginning of period (in shares)	403,658
Granted (in shares)	0
Vested (in shares)	(36,407)
Forfeited (in shares)	(3,372)
Outstanding - end of period (in shares)	363,879
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Outstanding - beginning of period, Weighted-Average Grant Date Fair Value (in dollars per share)	$ 16.17
Granted, Weighted-Average Grant Date Fair Value (in dollars per share)	0
Vested, Weighted-Average Grant Date Fair Value (in dollars per share)	15.31
Forfeited, Weighted-Average Grant Date Fair Value (in dollars per share)	14.75
Outstanding - end of period, Weighted-Average Grant Date Fair Value (in dollars per share)	$ 16.27
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]
Total compensation cost not yet recognized	$ 4,600
Total compensation cost not yet recognized, period for recognition	2 years 8 months 10 days
Performance shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]
Equity instruments other than options, vested in period	$ 735	$ 500
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]
Total compensation cost not yet recognized	$ 1,800
Total compensation cost not yet recognized, period for recognition	3 years 2 months 10 days

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Net income (Numerator)
Net income available to common stockholders - basic	$ 36,210	$ 23,623
Net income available to common stockholders - diluted	$ 36,210	$ 23,623
Shares (Denominator)
Weighted-Average Shares (Denominator) (shares)	135,248,018	79,583,188
Effect of Dilutive Securities:
Stock options and performance units (shares)	520,627	30,057
Diluted EPS - common stock (shares)	135,768,645	79,613,245
Per Share (Amount)
Basic EPS - common stock (in dollars per share)	$ 0.27	$ 0.30
Diluted EPS - common stock (in dollars per share)	$ 0.27	$ 0.30
Stock options and restricted shares
Antidilutive Securities Excluded from Computation of Earnings Per Share
Antidilutive shares of common stock	236,878	443,956
Warrants
Antidilutive Securities Excluded from Computation of Earnings Per Share
Antidilutive shares of common stock	19,963	19,420

Securities Available for Sale46

Securities Available for Sale (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 1,606,334	$ 1,582,309
Gross Unrealized Gains	2,285	1,842
Gross Unrealized Losses	(24,673)	(27,411)
Estimated Fair Value	1,583,946	1,556,740
Collateralized Debt Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	10,002	12,005
Gross Unrealized Gains	0	3
Gross Unrealized Losses	(4)	0
Estimated Fair Value	9,998	12,008
GSE collateralized mortgage obligations
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	736,000	715,981
Gross Unrealized Gains	406	349
Gross Unrealized Losses	(9,787)	(10,663)
Estimated Fair Value	726,619	705,667
GSE mortgage-backed securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	744,654	741,304
Gross Unrealized Gains	1,252	1,132
Gross Unrealized Losses	(13,214)	(14,395)
Estimated Fair Value	732,692	728,041
Trust preferred securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	4,564	11,576
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(251)	(449)
Estimated Fair Value	4,313	11,127
Municipal bonds
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	97,689	88,018
Gross Unrealized Gains	609	358
Gross Unrealized Losses	(1,044)	(1,537)
Estimated Fair Value	97,254	86,839
Total Debt securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	1,592,909	1,568,884
Gross Unrealized Gains	2,267	1,842
Gross Unrealized Losses	(24,300)	(27,044)
Estimated Fair Value	1,570,876	1,543,682
Mutual funds - GSE mortgage related securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	13,425	13,425
Gross Unrealized Gains	18	0
Gross Unrealized Losses	(373)	(367)
Estimated Fair Value	$ 13,070	$ 13,058

Securities Available for Sale -

Securities Available for Sale - Amortized Cost and Estimated Fair Value (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]
Amortized Cost - Due within one year	$ 10,724
Amortized Cost - Due after one year through five years	7,472
Amortized Cost - Due after five years through ten years	40,905
Amortized Cost - Due after ten years	53,154
Amortized Cost	1,606,334	$ 1,582,309
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Estimated Fair Value - Due within one year	10,725
Estimated Fair Value - Due after one year through five years	7,630
Estimated Fair Value - Due after five years through ten years	40,891
Estimated Fair Value - Due after ten years	52,319
Estimated Fair Value	1,583,946	1,556,740
Available-for-sale Securities, Restricted	366,100	382,100
Trust Preferred Security [Member]
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]
Amortized Cost	4,564	11,576
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Estimated Fair Value	4,313	11,127
GSE collateralized mortgage obligations
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]
Amortized Cost - no single maturity date	736,000
Amortized Cost	736,000	715,981
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Estimated Fair Value - no single maturity date	726,619
Estimated Fair Value	726,619	705,667
GSE mortgage-backed securities
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]
Amortized Cost - no single maturity date	744,654
Amortized Cost	744,654	741,304
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Estimated Fair Value - no single maturity date	732,692
Estimated Fair Value	732,692	728,041
Mutual funds - GSE mortgage related securities
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]
Amortized Cost - no single maturity date	13,425
Amortized Cost	13,425	13,425
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Estimated Fair Value - no single maturity date	13,070
Estimated Fair Value	$ 13,070	$ 13,058

Securities Available for Sale48

Securities Available for Sale - Aggregate Unrealized Losses and Fair Value (Details)		3 Months Ended		12 Months Ended
		Mar. 31, 2017USD ($)security	Mar. 31, 2016USD ($)	Dec. 31, 2016USD ($)security
Number of Securities
Number of Securities, Less than 12 months | security		186		222
Number of Securities, 12 months or longer | security		6		5
Number of Securities, Total | security		192		227
Fair Value
Fair Value - Less than 12 months		$ 1,302,740,000		$ 1,328,003,000
Fair Value - 12 months or longer		39,665,000		40,446,000
Fair Value - Total		1,342,405,000		1,368,449,000
Gross Unrealized Losses
Gross Unrealized Losses - Less than 12 months		(23,277,000)		(25,760,000)
Gross Unrealized Losses - 12 months or longer		(1,396,000)		(1,651,000)
Gross Unrealized Losses - Total		(24,673,000)		$ (27,411,000)
Change in unrealized net holding gains on securities available for sale		$ 3,181,000	$ 15,633,000
US Government Agencies Debt Securities [Member]
Number of Securities
Number of Securities, Less than 12 months | security	[1]	3
Number of Securities, 12 months or longer | security	[1]	0
Number of Securities, Total | security	[1]	3
Fair Value
Fair Value - Less than 12 months	[1]	$ 9,998,000
Fair Value - 12 months or longer	[1]	0
Fair Value - Total	[1]	9,998,000
Gross Unrealized Losses
Gross Unrealized Losses - Less than 12 months	[1]	(4,000)
Gross Unrealized Losses - 12 months or longer	[1]	0
Gross Unrealized Losses - Total	[1]	$ (4,000)
GSE collateralized mortgage obligations
Number of Securities
Number of Securities, Less than 12 months | security	[1]	67		66
Number of Securities, 12 months or longer | security	[1]	4		4
Number of Securities, Total | security	[1]	71		70
Fair Value
Fair Value - Less than 12 months	[1]	$ 624,327,000		$ 615,803,000
Fair Value - 12 months or longer	[1]	34,843,000		36,333,000
Fair Value - Total	[1]	659,170,000		652,136,000
Gross Unrealized Losses
Gross Unrealized Losses - Less than 12 months	[1]	(8,668,000)		(9,459,000)
Gross Unrealized Losses - 12 months or longer	[1]	(1,119,000)		(1,204,000)
Gross Unrealized Losses - Total	[1]	(9,787,000)		$ (10,663,000)
OTTI recognized		$ 0
GSE mortgage-backed securities
Number of Securities
Number of Securities, Less than 12 months | security	[1]	59		57
Number of Securities, 12 months or longer | security	[1]	0		0
Number of Securities, Total | security	[1]	59		57
Fair Value
Fair Value - Less than 12 months	[1]	$ 606,378,000		$ 622,797,000
Fair Value - 12 months or longer	[1]	0		0
Fair Value - Total	[1]	606,378,000		622,797,000
Gross Unrealized Losses
Gross Unrealized Losses - Less than 12 months	[1]	(13,214,000)		(14,395,000)
Gross Unrealized Losses - 12 months or longer	[1]	0		0
Gross Unrealized Losses - Total	[1]	(13,214,000)		$ (14,395,000)
OTTI recognized		$ 0
Trust preferred securities
Number of Securities
Number of Securities, Less than 12 months | security		0		1
Number of Securities, 12 months or longer | security		1		1
Number of Securities, Total | security		1		2
Fair Value
Fair Value - Less than 12 months		$ 0		$ 7,014,000
Fair Value - 12 months or longer		4,313,000		4,113,000
Fair Value - Total		4,313,000		11,127,000
Gross Unrealized Losses
Gross Unrealized Losses - Less than 12 months		0		(2,000)
Gross Unrealized Losses - 12 months or longer		(251,000)		(447,000)
Gross Unrealized Losses - Total		(251,000)		$ (449,000)
OTTI recognized		$ 0
Municipal bonds
Number of Securities
Number of Securities, Less than 12 months | security		54		95
Number of Securities, 12 months or longer | security		1		0
Number of Securities, Total | security		55		95
Fair Value
Fair Value - Less than 12 months		$ 50,447,000		$ 69,331,000
Fair Value - 12 months or longer		509,000		0
Fair Value - Total		50,956,000		69,331,000
Gross Unrealized Losses
Gross Unrealized Losses - Less than 12 months		(1,018,000)		(1,537,000)
Gross Unrealized Losses - 12 months or longer		(26,000)		0
Gross Unrealized Losses - Total		$ (1,044,000)		$ (1,537,000)
Mutual funds - GSE mortgage related securities
Number of Securities
Number of Securities, Less than 12 months | security		3		3
Number of Securities, 12 months or longer | security		0		0
Number of Securities, Total | security		3		3
Fair Value
Fair Value - Less than 12 months		$ 11,590,000		$ 13,058,000
Fair Value - 12 months or longer		0		0
Fair Value - Total		11,590,000		13,058,000
Gross Unrealized Losses
Gross Unrealized Losses - Less than 12 months		(373,000)		(367,000)
Gross Unrealized Losses - 12 months or longer		0		0
Gross Unrealized Losses - Total		$ (373,000)		$ (367,000)
Credit concentration risk | Stockholders' equity | Non-US Government and agency securities
Gross Unrealized Losses
Maximum exposure to any single issuer		10.00%		10.00%
[1]	Investments in U.S. Government agency and U.S. Government sponsored enterprises

Loans Receivable and Allowanc49

Loans Receivable and Allowance for Loan Losses - Schedule of Accounts, Notes, Loans and Financing Receivable (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2017USD ($)segment	Dec. 31, 2016USD ($)	Jun. 30, 2016USD ($)	Mar. 31, 2016USD ($)	Mar. 31, 2015USD ($)
Real estate loans:
Loans	$ 10,551,550	$ 10,544,989
Less: deferred loan fees	(1,883)	(1,657)
Loans receivable	10,549,667	10,543,332
Less: allowance for loan losses	(78,659)	(79,343)	$ (79,343)	$ (76,856)	$ (76,408)
Loans receivable, net of allowance for loan losses	$ 10,471,008	10,463,989
Number of portfolio segments | segment	4
Real estate loans
Real estate loans:
Loans	$ 8,291,188	8,154,570
Real estate loans | Residential
Real estate loans:
Loans	58,166	57,884
Less: allowance for loan losses	(287)	(209)
Real estate loans | Commercial & industrial
Real estate loans:
Loans	7,948,844	7,842,573
Less: allowance for loan losses	(55,387)	(49,917)
Real estate loans | Construction
Real estate loans:
Loans	284,178	254,113
Less: allowance for loan losses	(1,710)	(1,621)
Commercial business
Real estate loans:
Loans	1,696,895	1,832,021
Less: allowance for loan losses	(18,423)	(23,547)
Trade finance
Real estate loans:
Loans	143,298	154,928
Less: allowance for loan losses	(811)	(1,897)
Consumer and other
Real estate loans:
Loans	420,169	403,470
Less: allowance for loan losses	$ (2,041)	$ (2,152)

Loans Receivable and Allowanc50

Loans Receivable and Allowance for Loan Losses - Accretable Yield Movement Schedule on Acquired Credit Impaired Loans in Center Merger (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Balance at beginning of period	$ 38,591	$ 23,777
Accretion	(5,348)	(3,029)
Changes in expected cash flows	18,408	1,349
Balance at end of period	$ 51,651	$ 22,097

Loans Receivable and Allowanc51

Loans Receivable and Allowance for Loan Losses - Allowance for Credit Losses on Financing Receivables (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Dec. 31, 2016	Jun. 30, 2016	Mar. 31, 2015
Allowance for Loan Losses and the Loans Receivables by Impairment Methodology
Recognized provision for credit losses related to unfunded commitments	$ 241	$ (570)
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period	79,343
Provision (credit) for loan losses	5,600	500
Loans charged off	(6,605)	(821)
Recoveries of charged offs	321	769
Balance, end of period	78,659	76,856
Allowance for loan losses - Individually evaluated for impairment			$ 5,079	$ 7,409
Allowance for loan losses - Collectively evaluated for impairment			61,444	59,804
Allowance for loan losses - Total	79,343	76,856	78,659	79,343	$ 79,343	$ 76,408
Loans outstanding - Individually evaluated for impairment			129,579	140,361
Loans outstanding - Collectively evaluated for impairment			10,161,706	10,131,183
Loans outstanding - ACILs			10,471,008	10,463,989
Total loans outstanding			10,551,550	10,544,989
Legacy
Allowance for Loan Losses by Portfolio Segment
Total loans outstanding			6,915,682	6,721,566
Acquired
Allowance for Loan Losses by Portfolio Segment
Provision (credit) for loan losses	1,891
Total loans outstanding			3,635,868	3,823,423
Real estate
Allowance for Loan Losses by Portfolio Segment
Total loans outstanding			8,291,188	8,154,570
Real estate | Legacy
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period	38,956
Provision (credit) for loan losses	6,106	(1,218)
Loans charged off	(1,154)	(19)
Recoveries of charged offs	21	523
Balance, end of period	43,929	42,115
Allowance for loan losses - Individually evaluated for impairment			2,530	1,889
Allowance for loan losses - Collectively evaluated for impairment			41,399	37,067
Allowance for loan losses - Total	38,956	42,115	43,929	38,956	38,956	42,829
Loans outstanding - Individually evaluated for impairment			75,377	74,085
Loans outstanding - Collectively evaluated for impairment			5,474,703	5,271,262
Total loans outstanding			5,550,080	5,345,347
Real estate | Acquired
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period	12,791
Provision (credit) for loan losses	975	(82)
Loans charged off	(336)	(116)
Recoveries of charged offs	25	1
Balance, end of period	13,455	12,626
Allowance for loan losses - Individually evaluated for impairment			30	113
Allowance for loan losses - Collectively evaluated for impairment			1,289	548
Allowance for loan losses - Total	12,791	12,626	13,455	12,791	12,791	12,823
Loans outstanding - Individually evaluated for impairment			19,325	23,865
Loans outstanding - Collectively evaluated for impairment			2,538,765	2,597,200
Total loans outstanding			2,741,108	2,809,223
Commercial business
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period	23,547
Balance, end of period	18,423
Allowance for loan losses - Total	23,547		18,423	23,547
Total loans outstanding			1,696,895	1,832,021
Commercial business | Legacy
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period	23,430
Provision (credit) for loan losses	(2,884)	3,147
Loans charged off	(3,190)	(621)
Recoveries of charged offs	123	190
Balance, end of period	17,479	19,048
Allowance for loan losses - Individually evaluated for impairment			2,357	4,420
Allowance for loan losses - Collectively evaluated for impairment			15,122	19,010
Allowance for loan losses - Total	23,430	19,048	17,479	23,430	23,430	16,332
Loans outstanding - Individually evaluated for impairment			28,421	34,783
Loans outstanding - Collectively evaluated for impairment			1,065,952	1,079,348
Total loans outstanding			1,094,373	1,114,131
Commercial business | Acquired
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period	117
Provision (credit) for loan losses	748	(112)
Loans charged off	(70)	0
Recoveries of charged offs	149	52
Balance, end of period	944	154
Allowance for loan losses - Individually evaluated for impairment			122	73
Allowance for loan losses - Collectively evaluated for impairment			822	44
Allowance for loan losses - Total	117	154	944	117	117	214
Loans outstanding - Individually evaluated for impairment			1,019	435
Loans outstanding - Collectively evaluated for impairment			541,586	650,710
Total loans outstanding			602,522	717,890
Trade finance
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period	1,897
Balance, end of period	811
Allowance for loan losses - Total	1,897		811	1,897
Total loans outstanding			143,298	154,928
Trade finance | Legacy
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period	1,897
Provision (credit) for loan losses	303	(1,507)
Loans charged off	(1,576)	0
Recoveries of charged offs	0	0
Balance, end of period	624	2,085
Allowance for loan losses - Individually evaluated for impairment			0	864
Allowance for loan losses - Collectively evaluated for impairment			624	1,033
Allowance for loan losses - Total	1,897	2,085	624	1,897	1,897	3,592
Loans outstanding - Individually evaluated for impairment			4,450	6,029
Loans outstanding - Collectively evaluated for impairment			59,131	75,365
Total loans outstanding			63,581	81,394
Trade finance | Acquired
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period	0
Provision (credit) for loan losses	187	0
Loans charged off	0	0
Recoveries of charged offs	0	0
Balance, end of period	187	0
Allowance for loan losses - Individually evaluated for impairment			0	0
Allowance for loan losses - Collectively evaluated for impairment			187	0
Allowance for loan losses - Total	0	0	187	0	0	0
Loans outstanding - Individually evaluated for impairment			0	0
Loans outstanding - Collectively evaluated for impairment			76,541	70,535
Total loans outstanding			79,717	73,534
Consumer and other
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period	2,152
Balance, end of period	2,041
Allowance for loan losses - Total	2,152		2,041	2,152
Total loans outstanding			420,169	403,470
Consumer and other | Legacy
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period	2,116
Provision (credit) for loan losses	184	276
Loans charged off	(279)	(65)
Recoveries of charged offs	1	1
Balance, end of period	2,022	768
Allowance for loan losses - Individually evaluated for impairment			40	50
Allowance for loan losses - Collectively evaluated for impairment			1,982	2,066
Allowance for loan losses - Total	2,116	768	2,022	2,116	2,116	556
Loans outstanding - Individually evaluated for impairment			715	733
Loans outstanding - Collectively evaluated for impairment			206,933	179,961
Total loans outstanding			207,648	180,694
Consumer and other | Acquired
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period	36
Provision (credit) for loan losses	(19)	(4)
Loans charged off	0	0
Recoveries of charged offs	2	2
Balance, end of period	19	60
Allowance for loan losses - Individually evaluated for impairment			0	0
Allowance for loan losses - Collectively evaluated for impairment			19	36
Allowance for loan losses - Total	36	$ 60	19	36	$ 36	$ 62
Loans outstanding - Individually evaluated for impairment			272	431
Loans outstanding - Collectively evaluated for impairment			198,095	206,802
Total loans outstanding			212,521	222,776
Receivables acquired with deteriorated credit quality
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period	12,130
Balance, end of period	12,136
Allowance for loan losses - Total	12,130		12,136	12,130
Loans outstanding - ACILs			260,265	273,445
Receivables acquired with deteriorated credit quality | Real estate | Legacy
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period	0
Balance, end of period	0
Allowance for loan losses - Total	0		0	0
Loans outstanding - ACILs			0	0
Receivables acquired with deteriorated credit quality | Real estate | Acquired
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period	12,130
Balance, end of period	12,136
Allowance for loan losses - Total	12,130		12,136	12,130
Loans outstanding - ACILs			183,018	188,158
Receivables acquired with deteriorated credit quality | Commercial business | Legacy
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period	0
Balance, end of period	0
Allowance for loan losses - Total	0		0	0
Loans outstanding - ACILs			0	0
Receivables acquired with deteriorated credit quality | Commercial business | Acquired
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period	0
Balance, end of period	0
Allowance for loan losses - Total	0		0	0
Loans outstanding - ACILs			59,917	66,745
Receivables acquired with deteriorated credit quality | Trade finance | Legacy
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period	0
Balance, end of period	0
Allowance for loan losses - Total	0		0	0
Loans outstanding - ACILs			0	0
Receivables acquired with deteriorated credit quality | Trade finance | Acquired
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period	0
Balance, end of period	0
Allowance for loan losses - Total	0		0	0
Loans outstanding - ACILs			3,176	2,999
Receivables acquired with deteriorated credit quality | Consumer and other | Legacy
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period	0
Balance, end of period	0
Allowance for loan losses - Total	0		0	0
Loans outstanding - ACILs			0	0
Receivables acquired with deteriorated credit quality | Consumer and other | Acquired
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period	0
Balance, end of period	0
Allowance for loan losses - Total	$ 0		0	0
Loans outstanding - ACILs			$ 14,154	$ 15,543

Loans Receivable and Allowanc52

Loans Receivable and Allowance for Loan Losses - Impaired Financing Receivables (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2017		Mar. 31, 2016	Dec. 31, 2016
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance	[1]	$ 52,140			$ 60,758
Recorded Investment, With no related allowance	[1]	77,439			79,603
Related Allowance		(5,079)			(7,409)
Impaired Loans, net of allowance		124,500			132,952
Total recorded investment	[1]	129,579			140,361
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		54,434			62,494
Unpaid Contractual Principal Balance, With no related allowance		93,021			91,065
Impaired Financing Receivable, Unpaid Principal Balance		147,455			153,559
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance	[1]	56,450		$ 79,142
Average Recorded Investment, With no related allowance	[1]	78,522		60,116
Average Recorded Investment, Total	[1]	134,972		139,258
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		530		700
Interest Income Recognized during Impairment, With no related allowance		580		391
Interest Income Recognized during Impairment, Total		$ 1,110		1,091
Threshold period for loans to be placed on nonaccrual status		90 days
WIthout charge-offs
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance		$ 51,944			59,638
Recorded Investment, With no related allowance		70,466			76,775
With charge-offs
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance		196			1,120
Recorded Investment, With no related allowance		6,973			2,828
Acquired
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance		1,760			2,593
Recorded Investment, With no related allowance		18,856			22,138
Related Allowance		(152)			(186)
Total recorded investment		20,616			24,731
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		3,666			2,930
Unpaid Contractual Principal Balance, With no related allowance		23,009			26,118
Impaired Financing Receivable, Unpaid Principal Balance		26,675			29,048
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance		2,176		3,052
Average Recorded Investment, With no related allowance		20,497		17,284
Average Recorded Investment, Total		22,673		20,336
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		15		9
Interest Income Recognized during Impairment, With no related allowance		125		97
Interest Income Recognized during Impairment, Total		140		106
Real estate | Residential
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance		0	[1]		0
Recorded Investment, With no related allowance		1,465	[1]		3,562
Related Allowance		0			0
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		0			0
Unpaid Contractual Principal Balance, With no related allowance		1,465			3,562
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance	[1]	0		0
Average Recorded Investment, With no related allowance	[1]	2,513		0
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		0		0
Interest Income Recognized during Impairment, With no related allowance		28		0
Real estate | Residential | Acquired
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance		0			0
Recorded Investment, With no related allowance		0			679
Related Allowance		0			0
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		0			0
Unpaid Contractual Principal Balance, With no related allowance		0			679
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance		0		0
Average Recorded Investment, With no related allowance		339		0
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		0		0
Interest Income Recognized during Impairment, With no related allowance		0		0
Real estate | Commercial & industrial
Impaired Loans, Recorded Investment
Related Allowance		(2,560)			(2,002)
Real estate | Commercial & industrial | Retail
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance		581	[1]		2,095
Recorded Investment, With no related allowance		16,752	[1]		12,753
Related Allowance		(9)			(90)
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		581			2,384
Unpaid Contractual Principal Balance, With no related allowance		17,724			13,290
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance	[1]	1,338		1,712
Average Recorded Investment, With no related allowance	[1]	14,752		11,105
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		4		0
Interest Income Recognized during Impairment, With no related allowance		159		100
Real estate | Commercial & industrial | Retail | Acquired
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance		311			1,826
Recorded Investment, With no related allowance		4,351			3,148
Related Allowance		0			(85)
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		311			2,114
Unpaid Contractual Principal Balance, With no related allowance		4,831			3,214
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance		1,068		1,169
Average Recorded Investment, With no related allowance		3,750		2,571
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		4		0
Interest Income Recognized during Impairment, With no related allowance		31		26
Real estate | Commercial & industrial | Hotel & motel
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance		6,395	[1]		6,387
Recorded Investment, With no related allowance		6,273	[1]		6,122
Related Allowance		(403)			(337)
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		6,433			6,387
Unpaid Contractual Principal Balance, With no related allowance		12,221			11,735
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance	[1]	6,391		4,611
Average Recorded Investment, With no related allowance	[1]	6,198		7,849
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		43		57
Interest Income Recognized during Impairment, With no related allowance		7		22
Real estate | Commercial & industrial | Hotel & motel | Acquired
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance		92			0
Recorded Investment, With no related allowance		4,840			4,767
Related Allowance		(2)			0
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		89			0
Unpaid Contractual Principal Balance, With no related allowance		7,352			7,171
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance		46		0
Average Recorded Investment, With no related allowance		4,803		6,882
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		0		0
Interest Income Recognized during Impairment, With no related allowance		4		17
Real estate | Commercial & industrial | Gas station & car wash
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance		0	[1]		215
Recorded Investment, With no related allowance		4,160	[1]		5,043
Related Allowance		0			(41)
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		0			228
Unpaid Contractual Principal Balance, With no related allowance		6,634			7,449
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance	[1]	108		1,050
Average Recorded Investment, With no related allowance	[1]	4,602		4,665
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		0		0
Interest Income Recognized during Impairment, With no related allowance		10		34
Real estate | Commercial & industrial | Gas station & car wash | Acquired
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance		0			0
Recorded Investment, With no related allowance		618			1,568
Related Allowance		0			0
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		0			0
Unpaid Contractual Principal Balance, With no related allowance		804			1,815
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance		0		509
Average Recorded Investment, With no related allowance		1,093		1,392
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		0		0
Interest Income Recognized during Impairment, With no related allowance		10		25
Real estate | Commercial & industrial | Mixed use
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance		250	[1]		206
Recorded Investment, With no related allowance		6,530	[1]		7,303
Related Allowance		(3)			(27)
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		2,101			732
Unpaid Contractual Principal Balance, With no related allowance		7,614			7,822
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance	[1]	228		563
Average Recorded Investment, With no related allowance	[1]	6,916		2,364
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		2		2
Interest Income Recognized during Impairment, With no related allowance		63		12
Real estate | Commercial & industrial | Mixed use | Acquired
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance		250			136
Recorded Investment, With no related allowance		5,283			5,315
Related Allowance		(3)			(2)
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		2,101			136
Unpaid Contractual Principal Balance, With no related allowance		5,510			5,551
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance		193		493
Average Recorded Investment, With no related allowance		5,299		273
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		2		2
Interest Income Recognized during Impairment, With no related allowance		63		3
Real estate | Commercial & industrial | Industrial & warehouse
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance		2,882	[1]		530
Recorded Investment, With no related allowance		8,498	[1]		9,673
Related Allowance		(2)			0
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		2,882			530
Unpaid Contractual Principal Balance, With no related allowance		8,574			9,748
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance	[1]	1,706		560
Average Recorded Investment, With no related allowance	[1]	9,086		9,888
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		32		6
Interest Income Recognized during Impairment, With no related allowance		75		85
Real estate | Commercial & industrial | Industrial & warehouse | Acquired
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance		0			0
Recorded Investment, With no related allowance		65			66
Related Allowance		0			0
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		0			0
Unpaid Contractual Principal Balance, With no related allowance		65			66
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance		0		0
Average Recorded Investment, With no related allowance		66		1,111
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		0		0
Interest Income Recognized during Impairment, With no related allowance		1		2
Real estate | Commercial & industrial | Other
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance		22,412	[1]		22,580
Recorded Investment, With no related allowance		15,648	[1]		20,181
Related Allowance		(2,143)			(1,507)
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		22,657			22,825
Unpaid Contractual Principal Balance, With no related allowance		16,911			21,492
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance	[1]	22,496		24,462
Average Recorded Investment, With no related allowance	[1]	17,915		12,712
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		253		275
Interest Income Recognized during Impairment, With no related allowance		130		90
Real estate | Commercial & industrial | Other | Acquired
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance		333			337
Recorded Investment, With no related allowance		3,182			6,023
Related Allowance		(25)			(26)
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		337			341
Unpaid Contractual Principal Balance, With no related allowance		3,853			6,752
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance		335		305
Average Recorded Investment, With no related allowance		4,603		3,826
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		4		4
Interest Income Recognized during Impairment, With no related allowance		13		14
Real estate | Construction
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance		0	[1]		0
Recorded Investment, With no related allowance		2,856	[1]		1,300
Related Allowance		0			0
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		0			0
Unpaid Contractual Principal Balance, With no related allowance		2,996			1,441
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance	[1]	0		0
Average Recorded Investment, With no related allowance	[1]	2,078		1,355
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		0		0
Interest Income Recognized during Impairment, With no related allowance		20		0
Real estate | Construction | Acquired
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance		0			0
Recorded Investment, With no related allowance		0			0
Related Allowance		0			0
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		0			0
Unpaid Contractual Principal Balance, With no related allowance		0			0
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance		0		0
Average Recorded Investment, With no related allowance		0		0
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		0		0
Interest Income Recognized during Impairment, With no related allowance		0		0
Commercial business
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance		19,538	[1]		26,543
Recorded Investment, With no related allowance		9,902	[1]		8,675
Related Allowance		(2,479)			(4,493)
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		19,698			27,161
Unpaid Contractual Principal Balance, With no related allowance		13,509			9,472
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance	[1]	23,041		35,742
Average Recorded Investment, With no related allowance	[1]	9,289		8,950
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		195		265
Interest Income Recognized during Impairment, With no related allowance		30		41
Commercial business | Acquired
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance		774			294
Recorded Investment, With no related allowance		245			141
Related Allowance		(122)			(73)
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		828			339
Unpaid Contractual Principal Balance, With no related allowance		313			386
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance		534		576
Average Recorded Investment, With no related allowance		193		672
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		5		3
Interest Income Recognized during Impairment, With no related allowance		1		8
Trade finance
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance		0	[1]		2,111
Recorded Investment, With no related allowance		4,450	[1]		3,918
Related Allowance		0			(864)
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		0			2,156
Unpaid Contractual Principal Balance, With no related allowance		4,450			3,918
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance	[1]	1,055		10,314
Average Recorded Investment, With no related allowance	[1]	4,184		0
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		0		94
Interest Income Recognized during Impairment, With no related allowance		51		0
Trade finance | Acquired
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance		0			0
Recorded Investment, With no related allowance		0			0
Related Allowance		0			0
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		0			0
Unpaid Contractual Principal Balance, With no related allowance		0			0
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance		0		0
Average Recorded Investment, With no related allowance		0		0
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		0		0
Interest Income Recognized during Impairment, With no related allowance		0		0
Consumer and other
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance		82	[1]		91
Recorded Investment, With no related allowance		905	[1]		1,073
Related Allowance		(40)			(50)
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		82			91
Unpaid Contractual Principal Balance, With no related allowance		923			1,136
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance	[1]	87		128
Average Recorded Investment, With no related allowance	[1]	989		1,228
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		1		1
Interest Income Recognized during Impairment, With no related allowance		7		7
Consumer and other | Acquired
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance		0			0
Recorded Investment, With no related allowance		272			431
Related Allowance		0			0
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		0			0
Unpaid Contractual Principal Balance, With no related allowance		281			$ 484
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance		0		0
Average Recorded Investment, With no related allowance		351		557
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		0		0
Interest Income Recognized during Impairment, With no related allowance		$ 2		$ 2
[1]	Unpaid contractual principal balance less charge offs, interest collected applied to principal if on nonaccrual and purchase discounts.

Loans Receivable and Allowanc53

Loans Receivable and Allowance for Loan Losses - Past Due Financing Receivables (Details) - USD ($) $ in Thousands		Mar. 31, 2017		Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		$ 20,707		$ 18,342
Total Delinquent loans		57,716		58,416
Guaranteed portion of delinquent SBA loans excluded from Nonaccrual loans		15,200		15,900
Nonaccrual loans less than 30 days past due		37,009		40,074
Legacy
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		14,451		13,278
Total Delinquent loans		42,360		42,222
Nonaccrual loans less than 30 days past due		27,909		28,944
Legacy | Commercial business
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		1,306		1,373
Total Delinquent loans		10,461		10,744
Nonaccrual loans less than 30 days past due	[1]	9,155		9,371
Legacy | Trade finance
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		500
Total Delinquent loans		528		2,556
Nonaccrual loans less than 30 days past due	[1]	528		2,056
Legacy | Consumer and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		570		509
Total Delinquent loans		798		738
Nonaccrual loans less than 30 days past due	[1]	228		229
Acquired
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		6,256	[2]	5,064	[3]
Total Delinquent loans		15,356	[3]	16,194
Nonaccrual loans less than 30 days past due		9,100		11,130
Acquired | Commercial business
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		360	[2]	1,987	[3]
Total Delinquent loans		795	[2]	2,332	[3]
Nonaccrual loans less than 30 days past due	[1],[2]	435		345
Acquired | Trade finance
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[2]	0	[3]
Total Delinquent loans		0	[2]	0	[3]
Nonaccrual loans less than 30 days past due	[1],[2]	0		0
Acquired | Consumer and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		684	[2]	356	[3]
Total Delinquent loans		798	[2]	905	[3]
Nonaccrual loans less than 30 days past due	[1],[2]	114		549
30 to 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		15,447		10,268
30 to 59 Days Past Due | Legacy
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		10,198		6,253
30 to 59 Days Past Due | Legacy | Commercial business
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		640		558
30 to 59 Days Past Due | Legacy | Trade finance
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		0
30 to 59 Days Past Due | Legacy | Consumer and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		229		146
30 to 59 Days Past Due | Acquired
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		5,249	[2]	4,015	[3]
30 to 59 Days Past Due | Acquired | Commercial business
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		360	[2]	1,303	[3]
30 to 59 Days Past Due | Acquired | Trade finance
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[2]	0	[3]
30 to 59 Days Past Due | Acquired | Consumer and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		684	[2]	331	[3]
60 to 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		4,985		7,769
60 to 89 Days Past Due | Legacy
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		3,978		6,720
60 to 89 Days Past Due | Legacy | Commercial business
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		666		815
60 to 89 Days Past Due | Legacy | Trade finance
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		500
60 to 89 Days Past Due | Legacy | Consumer and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		66		58
60 to 89 Days Past Due | Acquired
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		1,007	[2]	1,049	[3]
60 to 89 Days Past Due | Acquired | Commercial business
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[2]	684	[3]
60 to 89 Days Past Due | Acquired | Trade finance
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[2]	0	[3]
60 to 89 Days Past Due | Acquired | Consumer and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[2]	25	[3]
90 or More Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		275		305
90 or More Days Past Due | Legacy
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		275		305
90 or More Days Past Due | Legacy | Commercial business
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		0
90 or More Days Past Due | Legacy | Trade finance
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		0
90 or More Days Past Due | Legacy | Consumer and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		275		305
90 or More Days Past Due | Acquired
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[2]	0	[3]
90 or More Days Past Due | Acquired | Commercial business
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[2]	0	[3]
90 or More Days Past Due | Acquired | Trade finance
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[2]	0	[3]
90 or More Days Past Due | Acquired | Consumer and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[2]	0	[3]
Less than 30 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans less than 30 days past due		15,600		18,300
Residential | Legacy | Real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		0
Total Delinquent loans		0		0
Nonaccrual loans less than 30 days past due	[1]	0		0
Residential | Acquired | Real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[2]	0	[3]
Total Delinquent loans		0	[2]	679	[3]
Nonaccrual loans less than 30 days past due	[1],[2]	0		679
Residential | 30 to 59 Days Past Due | Legacy | Real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		0
Residential | 30 to 59 Days Past Due | Acquired | Real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[2]	0	[3]
Residential | 60 to 89 Days Past Due | Legacy | Real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		0
Residential | 60 to 89 Days Past Due | Acquired | Real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[2]	0	[3]
Residential | 90 or More Days Past Due | Legacy | Real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		0
Residential | 90 or More Days Past Due | Acquired | Real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[2]	0	[3]
Commercial & industrial | Legacy | Real estate | Retail
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		938		480
Total Delinquent loans		3,595		4,152
Nonaccrual loans less than 30 days past due	[1]	2,657		3,672
Commercial & industrial | Legacy | Real estate | Hotel & motel
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		4,528		4,973
Total Delinquent loans		8,744		6,365
Nonaccrual loans less than 30 days past due	[1]	4,216		1,392
Commercial & industrial | Legacy | Real estate | Gas station & car wash
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		947		362
Total Delinquent loans		4,489		4,052
Nonaccrual loans less than 30 days past due	[1]	3,542		3,690
Commercial & industrial | Legacy | Real estate | Mixed use
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		0
Total Delinquent loans		1,247		1,305
Nonaccrual loans less than 30 days past due	[1]	1,247		1,305
Commercial & industrial | Legacy | Real estate | Industrial & warehouse
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		1,085		697
Total Delinquent loans		3,007		2,619
Nonaccrual loans less than 30 days past due	[1]	1,922		1,922
Commercial & industrial | Legacy | Real estate | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		5,077		2,871
Total Delinquent loans		8,191		6,878
Nonaccrual loans less than 30 days past due	[1]	3,114		4,007
Commercial & industrial | Acquired | Real estate | Retail
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		1,809	[2]	1,611	[3]
Total Delinquent loans		3,387	[2]	3,482	[3]
Nonaccrual loans less than 30 days past due	[1],[2]	1,578		1,871
Commercial & industrial | Acquired | Real estate | Hotel & motel
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		1,546	[2]	95	[3]
Total Delinquent loans		6,214	[2]	4,596	[3]
Nonaccrual loans less than 30 days past due	[1],[2]	4,668		4,501
Commercial & industrial | Acquired | Real estate | Gas station & car wash
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[2]	408	[3]
Total Delinquent loans		47	[2]	1,401	[3]
Nonaccrual loans less than 30 days past due	[1],[2]	47		993
Commercial & industrial | Acquired | Real estate | Mixed use
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		354	[2]	0	[3]
Total Delinquent loans		516	[2]	48	[3]
Nonaccrual loans less than 30 days past due	[1],[2]	162		48
Commercial & industrial | Acquired | Real estate | Industrial & warehouse
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		1,406	[2]	257	[3]
Total Delinquent loans		1,406	[2]	257	[3]
Nonaccrual loans less than 30 days past due	[1],[2]	0		0
Commercial & industrial | Acquired | Real estate | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		97	[2]	350	[3]
Total Delinquent loans		2,193	[2]	2,494	[3]
Nonaccrual loans less than 30 days past due	[1],[2]	2,096		2,144
Commercial & industrial | 30 to 59 Days Past Due | Legacy | Real estate | Retail
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		938		480
Commercial & industrial | 30 to 59 Days Past Due | Legacy | Real estate | Hotel & motel
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		3,341		1,836
Commercial & industrial | 30 to 59 Days Past Due | Legacy | Real estate | Gas station & car wash
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		947		362
Commercial & industrial | 30 to 59 Days Past Due | Legacy | Real estate | Mixed use
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		0
Commercial & industrial | 30 to 59 Days Past Due | Legacy | Real estate | Industrial & warehouse
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		57		0
Commercial & industrial | 30 to 59 Days Past Due | Legacy | Real estate | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		4,046		2,871
Commercial & industrial | 30 to 59 Days Past Due | Acquired | Real estate | Retail
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		1,156	[2]	1,611	[3]
Commercial & industrial | 30 to 59 Days Past Due | Acquired | Real estate | Hotel & motel
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		1,546	[2]	95	[3]
Commercial & industrial | 30 to 59 Days Past Due | Acquired | Real estate | Gas station & car wash
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[2]	68	[3]
Commercial & industrial | 30 to 59 Days Past Due | Acquired | Real estate | Mixed use
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[2]	0	[3]
Commercial & industrial | 30 to 59 Days Past Due | Acquired | Real estate | Industrial & warehouse
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		1,406	[2]	257	[3]
Commercial & industrial | 30 to 59 Days Past Due | Acquired | Real estate | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		97	[2]	350	[3]
Commercial & industrial | 60 to 89 Days Past Due | Legacy | Real estate | Retail
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		0
Commercial & industrial | 60 to 89 Days Past Due | Legacy | Real estate | Hotel & motel
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		1,187		3,137
Commercial & industrial | 60 to 89 Days Past Due | Legacy | Real estate | Gas station & car wash
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		0
Commercial & industrial | 60 to 89 Days Past Due | Legacy | Real estate | Mixed use
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		0
Commercial & industrial | 60 to 89 Days Past Due | Legacy | Real estate | Industrial & warehouse
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		1,028		697
Commercial & industrial | 60 to 89 Days Past Due | Legacy | Real estate | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		1,031		0
Commercial & industrial | 60 to 89 Days Past Due | Acquired | Real estate | Retail
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		653	[2]	0	[3]
Commercial & industrial | 60 to 89 Days Past Due | Acquired | Real estate | Hotel & motel
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[2]	0	[3]
Commercial & industrial | 60 to 89 Days Past Due | Acquired | Real estate | Gas station & car wash
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[2]	340	[3]
Commercial & industrial | 60 to 89 Days Past Due | Acquired | Real estate | Mixed use
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		354	[2]	0	[3]
Commercial & industrial | 60 to 89 Days Past Due | Acquired | Real estate | Industrial & warehouse
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[2]	0	[3]
Commercial & industrial | 60 to 89 Days Past Due | Acquired | Real estate | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[2]	0	[3]
Commercial & industrial | 90 or More Days Past Due | Legacy | Real estate | Retail
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		0
Commercial & industrial | 90 or More Days Past Due | Legacy | Real estate | Hotel & motel
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		0
Commercial & industrial | 90 or More Days Past Due | Legacy | Real estate | Gas station & car wash
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		0
Commercial & industrial | 90 or More Days Past Due | Legacy | Real estate | Mixed use
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		0
Commercial & industrial | 90 or More Days Past Due | Legacy | Real estate | Industrial & warehouse
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		0
Commercial & industrial | 90 or More Days Past Due | Legacy | Real estate | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		0
Commercial & industrial | 90 or More Days Past Due | Acquired | Real estate | Retail
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[2]	0	[3]
Commercial & industrial | 90 or More Days Past Due | Acquired | Real estate | Hotel & motel
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[2]	0	[3]
Commercial & industrial | 90 or More Days Past Due | Acquired | Real estate | Gas station & car wash
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[2]	0	[3]
Commercial & industrial | 90 or More Days Past Due | Acquired | Real estate | Mixed use
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[2]	0	[3]
Commercial & industrial | 90 or More Days Past Due | Acquired | Real estate | Industrial & warehouse
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[2]	0	[3]
Commercial & industrial | 90 or More Days Past Due | Acquired | Real estate | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[2]	0	[3]
Construction | Legacy | Real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		1,513
Total Delinquent loans		1,300		2,813
Nonaccrual loans less than 30 days past due	[1]	1,300		1,300
Construction | Acquired | Real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[2]	0	[3]
Total Delinquent loans		0	[2]	0	[3]
Nonaccrual loans less than 30 days past due	[1],[2]	0		0
Construction | 30 to 59 Days Past Due | Legacy | Real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		0
Construction | 30 to 59 Days Past Due | Acquired | Real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[2]	0	[3]
Construction | 60 to 89 Days Past Due | Legacy | Real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		1,513
Construction | 60 to 89 Days Past Due | Acquired | Real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[2]	0	[3]
Construction | 90 or More Days Past Due | Legacy | Real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		0
Construction | 90 or More Days Past Due | Acquired | Real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		$ 0	[2]	$ 0	[3]
[1]	of delinquent SBA loans that are in liquidation totaling $15.2 million. Includes nonaccrual loans less than 30 days past due totaling $15.6 million.
[2]	Acquired Loans exclude PCI loans.
[3]	Acquired Loans exclude PCI loans.

Loans Receivable and Allowanc54

Loans Receivable and Allowance for Loan Losses - Financing Receivable Credit Quality Indicators (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment [Line Items]
Loans	$ 10,551,550	$ 10,544,989
Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	10,015,587	9,988,278
Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	225,967	243,656
Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	307,712	311,106
Doubtful or Loss
Financing Receivable, Recorded Investment [Line Items]
Loans	2,284	1,949
Real estate
Financing Receivable, Recorded Investment [Line Items]
Loans	8,291,188	8,154,570
Real estate | Residential
Financing Receivable, Recorded Investment [Line Items]
Loans	58,166	57,884
Real estate | Commercial & industrial
Financing Receivable, Recorded Investment [Line Items]
Loans	7,948,844	7,842,573
Real estate | Construction
Financing Receivable, Recorded Investment [Line Items]
Loans	284,178	254,113
Commercial business
Financing Receivable, Recorded Investment [Line Items]
Loans	1,696,895	1,832,021
Trade finance
Financing Receivable, Recorded Investment [Line Items]
Loans	143,298	154,928
Consumer and other
Financing Receivable, Recorded Investment [Line Items]
Loans	420,169	403,470
Legacy
Financing Receivable, Recorded Investment [Line Items]
Loans	6,915,682	6,721,566
Legacy | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	6,620,270	6,430,967
Legacy | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	127,431	127,562
Legacy | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	167,748	162,942
Legacy | Doubtful or Loss
Financing Receivable, Recorded Investment [Line Items]
Loans	233	95
Legacy | Real estate
Financing Receivable, Recorded Investment [Line Items]
Loans	5,550,080	5,345,347
Legacy | Real estate | Residential
Financing Receivable, Recorded Investment [Line Items]
Loans	38,567	37,389
Legacy | Real estate | Residential | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	36,883	34,283
Legacy | Real estate | Residential | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	219	223
Legacy | Real estate | Residential | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	1,465	2,883
Legacy | Real estate | Residential | Doubtful or Loss
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Legacy | Real estate | Commercial & industrial | Retail
Financing Receivable, Recorded Investment [Line Items]
Loans	1,410,634	1,337,811
Legacy | Real estate | Commercial & industrial | Retail | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	1,373,943	1,303,452
Legacy | Real estate | Commercial & industrial | Retail | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	19,057	18,929
Legacy | Real estate | Commercial & industrial | Retail | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	17,634	15,430
Legacy | Real estate | Commercial & industrial | Retail | Doubtful or Loss
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Legacy | Real estate | Commercial & industrial | Hotel & motel
Financing Receivable, Recorded Investment [Line Items]
Loans	1,195,724	1,209,498
Legacy | Real estate | Commercial & industrial | Hotel & motel | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	1,171,476	1,187,709
Legacy | Real estate | Commercial & industrial | Hotel & motel | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	15,238	12,763
Legacy | Real estate | Commercial & industrial | Hotel & motel | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	9,010	9,026
Legacy | Real estate | Commercial & industrial | Hotel & motel | Doubtful or Loss
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Legacy | Real estate | Commercial & industrial | Gas station & car wash
Financing Receivable, Recorded Investment [Line Items]
Loans	651,577	654,231
Legacy | Real estate | Commercial & industrial | Gas station & car wash | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	637,755	643,282
Legacy | Real estate | Commercial & industrial | Gas station & car wash | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	10,280	7,259
Legacy | Real estate | Commercial & industrial | Gas station & car wash | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	3,542	3,690
Legacy | Real estate | Commercial & industrial | Gas station & car wash | Doubtful or Loss
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Legacy | Real estate | Commercial & industrial | Mixed use
Financing Receivable, Recorded Investment [Line Items]
Loans	399,235	376,779
Legacy | Real estate | Commercial & industrial | Mixed use | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	396,870	375,312
Legacy | Real estate | Commercial & industrial | Mixed use | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	957	0
Legacy | Real estate | Commercial & industrial | Mixed use | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	1,408	1,467
Legacy | Real estate | Commercial & industrial | Mixed use | Doubtful or Loss
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Legacy | Real estate | Commercial & industrial | Industrial & warehouse
Financing Receivable, Recorded Investment [Line Items]
Loans	552,449	522,103
Legacy | Real estate | Commercial & industrial | Industrial & warehouse | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	515,640	478,528
Legacy | Real estate | Commercial & industrial | Industrial & warehouse | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	21,839	29,830
Legacy | Real estate | Commercial & industrial | Industrial & warehouse | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	14,970	13,745
Legacy | Real estate | Commercial & industrial | Industrial & warehouse | Doubtful or Loss
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Legacy | Real estate | Commercial & industrial | Other
Financing Receivable, Recorded Investment [Line Items]
Loans	1,109,388	1,032,261
Legacy | Real estate | Commercial & industrial | Other | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	1,050,557	969,024
Legacy | Real estate | Commercial & industrial | Other | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	22,967	22,220
Legacy | Real estate | Commercial & industrial | Other | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	35,864	41,017
Legacy | Real estate | Commercial & industrial | Other | Doubtful or Loss
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Legacy | Real estate | Construction
Financing Receivable, Recorded Investment [Line Items]
Loans	192,506	175,275
Legacy | Real estate | Construction | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	175,895	159,230
Legacy | Real estate | Construction | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	13,755	14,745
Legacy | Real estate | Construction | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	2,856	1,300
Legacy | Real estate | Construction | Doubtful or Loss
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Legacy | Commercial business
Financing Receivable, Recorded Investment [Line Items]
Loans	1,094,373	1,114,131
Legacy | Commercial business | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	1,000,577	1,032,232
Legacy | Commercial business | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	18,973	15,919
Legacy | Commercial business | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	74,590	65,885
Legacy | Commercial business | Doubtful or Loss
Financing Receivable, Recorded Investment [Line Items]
Loans	233	95
Legacy | Trade finance
Financing Receivable, Recorded Investment [Line Items]
Loans	63,581	81,394
Legacy | Trade finance | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	53,839	68,051
Legacy | Trade finance | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	4,142	5,673
Legacy | Trade finance | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	5,600	7,670
Legacy | Trade finance | Doubtful or Loss
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Legacy | Consumer and other
Financing Receivable, Recorded Investment [Line Items]
Loans	207,648	180,694
Legacy | Consumer and other | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	206,835	179,864
Legacy | Consumer and other | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	4	1
Legacy | Consumer and other | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	809	829
Legacy | Consumer and other | Doubtful or Loss
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Acquired
Financing Receivable, Recorded Investment [Line Items]
Loans	3,635,868	3,823,423
Acquired | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	3,395,317	3,557,311
Acquired | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	98,536	116,094
Acquired | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	139,964	148,164
Acquired | Doubtful or Loss
Financing Receivable, Recorded Investment [Line Items]
Loans	2,051	1,854
Acquired | Real estate
Financing Receivable, Recorded Investment [Line Items]
Loans	2,741,108	2,809,223
Acquired | Real estate | Residential
Financing Receivable, Recorded Investment [Line Items]
Loans	19,599	20,495
Acquired | Real estate | Residential | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	19,330	18,007
Acquired | Real estate | Residential | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	269	1,809
Acquired | Real estate | Residential | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	0	679
Acquired | Real estate | Residential | Doubtful or Loss
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Acquired | Real estate | Commercial & industrial | Retail
Financing Receivable, Recorded Investment [Line Items]
Loans	780,074	803,435
Acquired | Real estate | Commercial & industrial | Retail | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	750,436	772,465
Acquired | Real estate | Commercial & industrial | Retail | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	11,996	9,860
Acquired | Real estate | Commercial & industrial | Retail | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	17,642	21,110
Acquired | Real estate | Commercial & industrial | Retail | Doubtful or Loss
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Acquired | Real estate | Commercial & industrial | Hotel & motel
Financing Receivable, Recorded Investment [Line Items]
Loans	345,616	352,048
Acquired | Real estate | Commercial & industrial | Hotel & motel | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	316,099	328,396
Acquired | Real estate | Commercial & industrial | Hotel & motel | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	11,955	5,419
Acquired | Real estate | Commercial & industrial | Hotel & motel | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	17,562	18,233
Acquired | Real estate | Commercial & industrial | Hotel & motel | Doubtful or Loss
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Acquired | Real estate | Commercial & industrial | Gas station & car wash
Financing Receivable, Recorded Investment [Line Items]
Loans	261,602	269,154
Acquired | Real estate | Commercial & industrial | Gas station & car wash | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	243,494	249,379
Acquired | Real estate | Commercial & industrial | Gas station & car wash | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	8,918	8,437
Acquired | Real estate | Commercial & industrial | Gas station & car wash | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	9,190	11,338
Acquired | Real estate | Commercial & industrial | Gas station & car wash | Doubtful or Loss
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Acquired | Real estate | Commercial & industrial | Mixed use
Financing Receivable, Recorded Investment [Line Items]
Loans	132,638	134,261
Acquired | Real estate | Commercial & industrial | Mixed use | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	117,453	118,643
Acquired | Real estate | Commercial & industrial | Mixed use | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	3,578	3,105
Acquired | Real estate | Commercial & industrial | Mixed use | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	11,599	12,505
Acquired | Real estate | Commercial & industrial | Mixed use | Doubtful or Loss
Financing Receivable, Recorded Investment [Line Items]
Loans	8	8
Acquired | Real estate | Commercial & industrial | Industrial & warehouse
Financing Receivable, Recorded Investment [Line Items]
Loans	345,505	362,222
Acquired | Real estate | Commercial & industrial | Industrial & warehouse | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	314,060	321,040
Acquired | Real estate | Commercial & industrial | Industrial & warehouse | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	14,694	31,819
Acquired | Real estate | Commercial & industrial | Industrial & warehouse | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	16,453	9,048
Acquired | Real estate | Commercial & industrial | Industrial & warehouse | Doubtful or Loss
Financing Receivable, Recorded Investment [Line Items]
Loans	298	315
Acquired | Real estate | Commercial & industrial | Other
Financing Receivable, Recorded Investment [Line Items]
Loans	764,402	788,770
Acquired | Real estate | Commercial & industrial | Other | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	712,484	736,385
Acquired | Real estate | Commercial & industrial | Other | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	28,529	23,286
Acquired | Real estate | Commercial & industrial | Other | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	23,389	29,099
Acquired | Real estate | Commercial & industrial | Other | Doubtful or Loss
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Acquired | Real estate | Construction
Financing Receivable, Recorded Investment [Line Items]
Loans	91,672	78,838
Acquired | Real estate | Construction | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	91,672	78,838
Acquired | Real estate | Construction | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Acquired | Real estate | Construction | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Acquired | Real estate | Construction | Doubtful or Loss
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Acquired | Commercial business
Financing Receivable, Recorded Investment [Line Items]
Loans	602,522	717,890
Acquired | Commercial business | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	549,059	649,186
Acquired | Commercial business | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	17,666	31,340
Acquired | Commercial business | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	35,700	37,265
Acquired | Commercial business | Doubtful or Loss
Financing Receivable, Recorded Investment [Line Items]
Loans	97	99
Acquired | Trade finance
Financing Receivable, Recorded Investment [Line Items]
Loans	79,717	73,534
Acquired | Trade finance | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	76,541	70,535
Acquired | Trade finance | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	17	61
Acquired | Trade finance | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	3,159	2,938
Acquired | Trade finance | Doubtful or Loss
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Acquired | Consumer and other
Financing Receivable, Recorded Investment [Line Items]
Loans	212,521	222,776
Acquired | Consumer and other | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	204,689	214,437
Acquired | Consumer and other | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	914	958
Acquired | Consumer and other | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	5,270	5,949
Acquired | Consumer and other | Doubtful or Loss
Financing Receivable, Recorded Investment [Line Items]
Loans	$ 1,648	$ 1,432

Loans Receivable and Allowanc55

Loans Receivable and Allowance for Loan Losses - Loans Held For Investment - Reclassification to Held for Sale (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Sale or reclassification to held for sale	$ 9,451	$ 450
Commercial & industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Sale or reclassification to held for sale	8,699	0
Commercial Business
Accounts, Notes, Loans and Financing Receivable [Line Items]
Sale or reclassification to held for sale	752	0
Consumer and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Sale or reclassification to held for sale	$ 0	$ 450

Loans Receivable and Allowanc56

Loans Receivable and Allowance for Loan Losses - Allowance for Loans, by Portfolio Segment and Impairment Method (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Jun. 30, 2016	Mar. 31, 2016	Mar. 31, 2015
Loans by Portfolio Segment and Impairment Method [Abstract]
Impaired loans (gross carrying value)	$ 129,579	$ 140,361
Specific allowance	$ 5,079	$ 7,409
Loss coverage ratio	3.90%	5.30%
Non-impaired loans	$ 10,421,971	$ 10,404,628
General allowance	$ 73,580	$ 71,934
Loss coverage ratio	0.70%	0.70%
Total loans outstanding	$ 10,551,550	$ 10,544,989
Allowance for loan losses - Total	$ 78,659	$ 79,343	$ 79,343	$ 76,856	$ 76,408
Loss coverage ratio	0.70%	0.80%
Real estate
Loans by Portfolio Segment and Impairment Method [Abstract]
Total loans outstanding	$ 8,291,188	$ 8,154,570
Real estate | Residential
Loans by Portfolio Segment and Impairment Method [Abstract]
Impaired loans (gross carrying value)	1,465	3,562
Specific allowance	0	0
Non-impaired loans	56,701	54,322
General allowance	$ 287	$ 209
Loss coverage ratio	0.50%	0.40%
Total loans outstanding	$ 58,166	$ 57,884
Allowance for loan losses - Total	$ 287	$ 209
Loss coverage ratio	0.50%	0.40%
Real estate | Commercial & industrial
Loans by Portfolio Segment and Impairment Method [Abstract]
Impaired loans (gross carrying value)	$ 90,381	$ 93,088
Specific allowance	$ 2,560	$ 2,002
Loss coverage ratio	2.80%	2.20%
Non-impaired loans	$ 7,858,463	$ 7,749,485
General allowance	$ 52,827	$ 47,915
Loss coverage ratio	0.70%	0.60%
Total loans outstanding	$ 7,948,844	$ 7,842,573
Allowance for loan losses - Total	$ 55,387	$ 49,917
Loss coverage ratio	0.70%	0.60%
Real estate | Construction
Loans by Portfolio Segment and Impairment Method [Abstract]
Impaired loans (gross carrying value)	$ 2,856	$ 1,300
Specific allowance	0	0
Non-impaired loans	281,322	252,813
General allowance	$ 1,710	$ 1,621
Loss coverage ratio	0.60%	0.60%
Total loans outstanding	$ 284,178	$ 254,113
Allowance for loan losses - Total	$ 1,710	$ 1,621
Loss coverage ratio	0.60%	0.60%
Commercial business
Loans by Portfolio Segment and Impairment Method [Abstract]
Impaired loans (gross carrying value)	$ 29,440	$ 35,218
Specific allowance	$ 2,479	$ 4,493
Loss coverage ratio	8.40%	12.80%
Non-impaired loans	$ 1,667,455	$ 1,796,803
General allowance	$ 15,944	$ 19,054
Loss coverage ratio	1.00%	1.10%
Total loans outstanding	$ 1,696,895	$ 1,832,021
Allowance for loan losses - Total	$ 18,423	$ 23,547
Loss coverage ratio	1.10%	1.30%
Trade finance
Loans by Portfolio Segment and Impairment Method [Abstract]
Impaired loans (gross carrying value)	$ 4,450	$ 6,029
Specific allowance	0	$ 864
Loss coverage ratio		14.30%
Non-impaired loans	138,848	$ 148,899
General allowance	$ 811	$ 1,033
Loss coverage ratio	0.60%	0.70%
Total loans outstanding	$ 143,298	$ 154,928
Allowance for loan losses - Total	$ 811	$ 1,897
Loss coverage ratio	0.60%	1.20%
Consumer and other
Loans by Portfolio Segment and Impairment Method [Abstract]
Impaired loans (gross carrying value)	$ 987	$ 1,164
Specific allowance	$ 40	$ 50
Loss coverage ratio	4.10%	4.30%
Non-impaired loans	$ 419,182	$ 402,306
General allowance	$ 2,001	$ 2,102
Loss coverage ratio	0.50%	0.50%
Total loans outstanding	$ 420,169	$ 403,470
Allowance for loan losses - Total	$ 2,041	$ 2,152
Loss coverage ratio	0.50%	0.50%
Acquired
Loans by Portfolio Segment and Impairment Method [Abstract]
Specific allowance	$ 152	$ 186
Total loans outstanding	3,635,868	3,823,423
Acquired | Real estate
Loans by Portfolio Segment and Impairment Method [Abstract]
Total loans outstanding	2,741,108	2,809,223
Allowance for loan losses - Total	13,455	12,791	12,791	12,626	12,823
Acquired | Real estate | Residential
Loans by Portfolio Segment and Impairment Method [Abstract]
Specific allowance	0	0
Total loans outstanding	19,599	20,495
Acquired | Real estate | Construction
Loans by Portfolio Segment and Impairment Method [Abstract]
Specific allowance	0	0
Total loans outstanding	91,672	78,838
Acquired | Commercial business
Loans by Portfolio Segment and Impairment Method [Abstract]
Specific allowance	122	73
Total loans outstanding	602,522	717,890
Allowance for loan losses - Total	944	117	117	154	214
Acquired | Trade finance
Loans by Portfolio Segment and Impairment Method [Abstract]
Specific allowance	0	0
Total loans outstanding	79,717	73,534
Allowance for loan losses - Total	187	0	0	0	0
Acquired | Consumer and other
Loans by Portfolio Segment and Impairment Method [Abstract]
Specific allowance	0	0
Total loans outstanding	212,521	222,776
Allowance for loan losses - Total	$ 19	$ 36	$ 36	$ 60	$ 62

Loans Receivable and Allowanc57

Loans Receivable and Allowance for Loan Losses - Troubled Debt Restructurings on Financing Receivables (Details)	3 Months Ended		12 Months Ended
	Mar. 31, 2017USD ($)loan	Mar. 31, 2016USD ($)loan	Dec. 31, 2016USD ($)loan
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	$ 66,105,000		$ 70,870,000
Number of modified contracts | loan	6	8
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 2,905,000	$ 13,317,000
Post-Modification	$ 2,358,000	$ 8,654,000
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	2	9
Balance	$ 113,000	$ 3,063,000
Specific reserves	2,000	2,100,000
Specific reserves for the TDRs	10,000	144,000
Charge offs	0	$ 30,000
Specific reserves allocated to TDRs	3,800,000		5,300,000
Payment concession
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	20,255,000		22,521,000
Troubled Debt Restructuring Concession, Type, Maturity/ Amortization Concession [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	32,186,000		33,641,000
Rate concession
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	13,664,000		14,708,000
TDR on accrual
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	48,984,000		48,874,000
TDR on accrual | Payment concession
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	16,482,000		16,387,000
TDR on accrual | Troubled Debt Restructuring Concession, Type, Maturity/ Amortization Concession [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	24,770,000		23,911,000
TDR on accrual | Rate concession
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	7,732,000		8,576,000
TDR on non-accrual
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	17,121,000		21,996,000
TDR on non-accrual | Payment concession
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	3,773,000		6,134,000
TDR on non-accrual | Troubled Debt Restructuring Concession, Type, Maturity/ Amortization Concession [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	7,416,000		9,730,000
TDR on non-accrual | Rate concession
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	$ 5,932,000		6,132,000
Commercial & industrial | TDR on accrual
Financing Receivable, Modifications [Line Items]
Troubled debt restructured			$ 25,054,000
Number of modified contracts | loan	20		20
Real estate | Commercial & industrial | TDR on accrual
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	$ 24,619,000		$ 25,054,000
Real estate | Commercial & industrial | TDR on accrual | Payment concession
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	16,249,000		16,358,000
Real estate | Commercial & industrial | TDR on accrual | Troubled Debt Restructuring Concession, Type, Maturity/ Amortization Concession [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	2,302,000		1,840,000
Real estate | Commercial & industrial | TDR on accrual | Rate concession
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	6,068,000		6,856,000
Real estate | Commercial & industrial | TDR on non-accrual
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	9,844,000		11,320,000
Real estate | Commercial & industrial | TDR on non-accrual | Payment concession
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	2,503,000		4,417,000
Real estate | Commercial & industrial | TDR on non-accrual | Troubled Debt Restructuring Concession, Type, Maturity/ Amortization Concession [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	1,774,000		1,313,000
Real estate | Commercial & industrial | TDR on non-accrual | Rate concession
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	5,567,000		5,590,000
Commercial business | TDR on accrual
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	$ 19,781,000		$ 19,165,000
Number of modified contracts | loan	24		23
Commercial business | TDR on accrual | Payment concession
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	$ 233,000		$ 29,000
Commercial business | TDR on accrual | Troubled Debt Restructuring Concession, Type, Maturity/ Amortization Concession [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	17,969,000		17,471,000
Commercial business | TDR on accrual | Rate concession
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	1,579,000		1,665,000
Commercial business | TDR on non-accrual
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	6,424,000		8,234,000
Commercial business | TDR on non-accrual | Payment concession
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	1,270,000		1,717,000
Commercial business | TDR on non-accrual | Troubled Debt Restructuring Concession, Type, Maturity/ Amortization Concession [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	4,789,000		6,130,000
Commercial business | TDR on non-accrual | Rate concession
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	365,000		387,000
Trade Finance and Other | TDR on accrual
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	4,584,000		4,655,000
Trade Finance and Other | TDR on accrual | Payment concession
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	0		0
Trade Finance and Other | TDR on accrual | Troubled Debt Restructuring Concession, Type, Maturity/ Amortization Concession [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	4,499,000		4,600,000
Trade Finance and Other | TDR on accrual | Rate concession
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	85,000		55,000
Trade Finance and Other | TDR on non-accrual
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	853,000		2,442,000
Trade Finance and Other | TDR on non-accrual | Payment concession
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	0		0
Trade Finance and Other | TDR on non-accrual | Troubled Debt Restructuring Concession, Type, Maturity/ Amortization Concession [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	853,000		2,287,000
Trade Finance and Other | TDR on non-accrual | Rate concession
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	0		155,000
Consumer and other | TDR on accrual
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	$ 4,584,000		$ 4,655,000
Number of modified contracts | loan	24		19
Legacy
Financing Receivable, Modifications [Line Items]
Number of modified contracts | loan	3	7
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 2,163,000	$ 13,287,000
Post-Modification	$ 1,700,000	$ 8,625,000
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	1	8
Balance	$ 102,000	$ 3,001,000
Legacy | Real estate
Financing Receivable, Modifications [Line Items]
Number of modified contracts | loan	0	0
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 0	$ 0
Post-Modification	$ 0	$ 0
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0	0
Balance	$ 0	$ 0
Legacy | Real estate | Troubled Debt Restructuring Concession, Type, Maturity/ Amortization Concession [Member]
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans		2
Balance		$ 729,000
Legacy | Real estate | Retail
Financing Receivable, Modifications [Line Items]
Number of modified contracts | loan	0	0
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 0	$ 0
Post-Modification	$ 0	$ 0
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0	0
Balance	$ 0	$ 0
Legacy | Real estate | Hotel & motel
Financing Receivable, Modifications [Line Items]
Number of modified contracts | loan	0	0
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 0	$ 0
Post-Modification	$ 0	$ 0
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0	0
Balance	$ 0	$ 0
Legacy | Real estate | Gas station & car wash
Financing Receivable, Modifications [Line Items]
Number of modified contracts | loan	0	0
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 0	$ 0
Post-Modification	$ 0	$ 0
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0	2
Balance	$ 0	$ 729,000
Legacy | Real estate | Mixed use
Financing Receivable, Modifications [Line Items]
Number of modified contracts | loan	0	0
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 0	$ 0
Post-Modification	$ 0	$ 0
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0	0
Balance	$ 0	$ 0
Legacy | Real estate | Industrial & warehouse
Financing Receivable, Modifications [Line Items]
Number of modified contracts | loan	0	0
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 0	$ 0
Post-Modification	$ 0	$ 0
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0	0
Balance	$ 0	$ 0
Legacy | Real estate | Other
Financing Receivable, Modifications [Line Items]
Number of modified contracts | loan	1	0
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 482,000	$ 0
Post-Modification	$ 482,000	$ 0
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0	0
Balance	$ 0	$ 0
Legacy | Commercial business
Financing Receivable, Modifications [Line Items]
Number of modified contracts | loan	2	6
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 1,681,000	$ 11,088,000
Post-Modification	$ 1,218,000	$ 7,039,000
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	1	6
Balance	$ 102,000	$ 2,272,000
Legacy | Commercial business | Payment concession
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans	1	4
Balance	$ 102,000	$ 2,022,000
Legacy | Commercial business | Troubled Debt Restructuring Concession, Type, Maturity/ Amortization Concession [Member]
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans		2
Balance		$ 249,000
Legacy | Trade finance
Financing Receivable, Modifications [Line Items]
Number of modified contracts | loan	0	1
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 0	$ 2,199,000
Post-Modification	$ 0	$ 1,586,000
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0	0
Balance	$ 0	$ 0
Legacy | Consumer And Other Portfolio Segment [Member]
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0	0
Balance	$ 0	$ 0
Legacy | Consumer and other
Financing Receivable, Modifications [Line Items]
Number of modified contracts | loan	0	0
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 0	$ 0
Post-Modification	$ 0	$ 0
Acquired
Financing Receivable, Modifications [Line Items]
Number of modified contracts | loan	3	1
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 742,000	$ 30,000
Post-Modification	$ 658,000	$ 29,000
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	1	1
Balance	$ 11,000	$ 62,000
Charge offs	$ 100,000	$ 0
Acquired | Payment concession
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan		1
Balance		$ 62,000
Acquired | Real estate
Financing Receivable, Modifications [Line Items]
Number of modified contracts | loan	0	0
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 0	$ 0
Post-Modification	$ 0	$ 0
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0	0
Balance	$ 0	$ 0
Acquired | Real estate | Retail
Financing Receivable, Modifications [Line Items]
Number of modified contracts | loan	0	0
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 0	$ 0
Post-Modification	$ 0	$ 0
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0	0
Balance	$ 0	$ 0
Acquired | Real estate | Hotel & motel
Financing Receivable, Modifications [Line Items]
Number of modified contracts | loan	0	0
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 0	$ 0
Post-Modification	$ 0	$ 0
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0	0
Balance	$ 0	$ 0
Acquired | Real estate | Gas station & car wash
Financing Receivable, Modifications [Line Items]
Number of modified contracts | loan	0	0
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 0	$ 0
Post-Modification	$ 0	$ 0
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0	0
Balance	$ 0	$ 0
Acquired | Real estate | Mixed use
Financing Receivable, Modifications [Line Items]
Number of modified contracts | loan	0	0
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 0	$ 0
Post-Modification	$ 0	$ 0
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0	1
Balance	$ 0	$ 62,000
Acquired | Real estate | Industrial & warehouse
Financing Receivable, Modifications [Line Items]
Number of modified contracts | loan	0	0
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 0	$ 0
Post-Modification	$ 0	$ 0
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0	0
Balance	$ 0	$ 0
Acquired | Real estate | Other
Financing Receivable, Modifications [Line Items]
Number of modified contracts | loan	1	0
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 93,000	$ 0
Post-Modification	$ 97,000	$ 0
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0	0
Balance	$ 0	$ 0
Acquired | Commercial business
Financing Receivable, Modifications [Line Items]
Number of modified contracts | loan	2	0
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 649,000	$ 0
Post-Modification	$ 561,000	$ 0
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	1	0
Balance	$ 11,000	$ 0
Acquired | Commercial business | Payment concession
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Balance	$ 11,000
Acquired | Trade finance
Financing Receivable, Modifications [Line Items]
Number of modified contracts | loan	0	0
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 0	$ 0
Post-Modification	$ 0	$ 0
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0	0
Balance	$ 0	$ 0
Acquired | Consumer And Other Portfolio Segment [Member]
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0	0
Balance	$ 0	$ 0
Acquired | Consumer and other
Financing Receivable, Modifications [Line Items]
Number of modified contracts | loan	0	1
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 0	$ 30,000
Post-Modification	$ 0	$ 29,000

Loans Receivable and Allowanc58

Loans Receivable and Allowance for Loan Losses - Covered Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Receivables [Abstract]
FDIC Clawback Liability	$ 2,000
Covered Nonperforming Assets
Covered loans on non-accrual status	181	$ 189
Covered other real estate owned	1,400	2,306
Total covered nonperforming assets	1,581	2,495
Acquired covered loans	$ 32,010	$ 32,367

Loans Receivable and Allowanc59

Loans Receivable and Allowance for Loan Losses - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Financing Receivable, Allowance for Credit Losses [Line Items]
Positive or negative qualitative adjustment of the Loss Migration Ratio	0.50%
Provision for loan losses	$ 5,600	$ 500
Commitment to lend	3,434		$ 3,194
Recognized provision for credit losses related to unfunded commitments	241	(570)
Charge offs	0	30
Acquired
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for PCI loan losses	734
Provision for loan losses	1,891
Charge offs	$ 100	$ 0

Deposits (Details)

Deposits (Details) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016
Deposits Disclosure [Line Items]
Time Deposits, $250,000 or More	$ 1,560	$ 1,550
California State Treasurer
Deposits Disclosure [Line Items]
Time Deposits, $250,000 or More	300
Available-for-sale Securities Pledged as Collateral	355.7	371.6
Interest-bearing Domestic Deposit, Brokered	$ 714.4	$ 724.7

Borrowings - Maturities of FHLB

Borrowings - Maturities of FHLB Borrowings (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Extinguishment of Debt [Line Items]
Total	$ 703,850	$ 754,290
Contractual Maturities
Extinguishment of Debt [Line Items]
Due within one year	220,103
Due after one year through five years	483,747
Total	703,850
Maturity/Put Date
Extinguishment of Debt [Line Items]
Due within one year	220,103
Due after one year through five years	483,747
Total	$ 703,850

Borrowings - Narrative (Details

Borrowings - Narrative (Details) - USD ($)	Mar. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Percent of assets	25.00%
Maximum borrowing capacity	$ 3,360,000,000	$ 3,380,000,000
Percent outstanding advances	100.00%
Advances from FHLB	$ 703,850,000	754,290,000
Unused funds	$ 2,640,000,000
Percent of qualifying assets	95.00%
Putable
Debt Instrument [Line Items]
Advances from FHLB	$ 20,100,000	$ 20,200,000
Weighted Average
Debt Instrument [Line Items]
FHLB advances, interest rate	1.29%	1.22%
Minimum
Debt Instrument [Line Items]
FHLB advances, interest rate	0.84%
Maximum
Debt Instrument [Line Items]
FHLB advances, interest rate	2.02%
Mortgage Loans on Real Estate
Debt Instrument [Line Items]
Pledged as collateral	$ 5,500,000,000	$ 5,530,000,000
Qualifying Loans
Debt Instrument [Line Items]
Asset balance used to determine maximum borrowing capacity from federal reserve bank	651,700,000
Securities Investment
Debt Instrument [Line Items]
Asset balance used to determine maximum borrowing capacity from federal reserve bank	5,700,000
Amount outstanding	$ 0	$ 0

Subordinated Debentures - Summa

Subordinated Debentures - Summary of Trust Preferred Securities and Debentures (Details) - USD ($)	Mar. 31, 2017	Dec. 31, 2016
Subordinated Borrowing [Line Items]
Carrying Value of Subordinated Debentures Amount	$ 100,067,000	$ 99,808,000
Trust Preferred Security Amount	126,000,000
Other assets
Subordinated Borrowing [Line Items]
Investment in common trust securities	3,900,000	$ 3,900,000
Trust Preferred Security Amount
Subordinated Borrowing [Line Items]
Trust Preferred Security Amount	126,000,000
Subordinated Debentures Amount
Subordinated Borrowing [Line Items]
Carrying Value of Subordinated Debentures Amount	$ 100,067,000
Nara Capital Trust III
Subordinated Borrowing [Line Items]
Initial Rate	4.28%
Nara Capital Trust III | Trust Preferred Security Amount
Subordinated Borrowing [Line Items]
Trust Preferred Security Amount	$ 5,000,000
Nara Capital Trust III | Subordinated Debentures Amount
Subordinated Borrowing [Line Items]
Carrying Value of Subordinated Debentures Amount	$ 5,155,000
Nara Statutory Trust IV
Subordinated Borrowing [Line Items]
Initial Rate	3.87%
Nara Statutory Trust IV | Trust Preferred Security Amount
Subordinated Borrowing [Line Items]
Trust Preferred Security Amount	$ 5,000,000
Nara Statutory Trust IV | Subordinated Debentures Amount
Subordinated Borrowing [Line Items]
Carrying Value of Subordinated Debentures Amount	$ 5,155,000
Nara Statutory Trust V
Subordinated Borrowing [Line Items]
Initial Rate	4.10%
Nara Statutory Trust V | Trust Preferred Security Amount
Subordinated Borrowing [Line Items]
Trust Preferred Security Amount	$ 10,000,000
Nara Statutory Trust V | Subordinated Debentures Amount
Subordinated Borrowing [Line Items]
Carrying Value of Subordinated Debentures Amount	$ 10,310,000
Nara Statutory Trust VI
Subordinated Borrowing [Line Items]
Initial Rate	2.78%
Nara Statutory Trust VI | Trust Preferred Security Amount
Subordinated Borrowing [Line Items]
Trust Preferred Security Amount	$ 8,000,000
Nara Statutory Trust VI | Subordinated Debentures Amount
Subordinated Borrowing [Line Items]
Carrying Value of Subordinated Debentures Amount	$ 8,248,000
Center Capital Trust I
Subordinated Borrowing [Line Items]
Initial Rate	3.87%
Center Capital Trust I | Trust Preferred Security Amount
Subordinated Borrowing [Line Items]
Trust Preferred Security Amount	$ 18,000,000
Center Capital Trust I | Subordinated Debentures Amount
Subordinated Borrowing [Line Items]
Carrying Value of Subordinated Debentures Amount	$ 13,684,000
Wilshire Statutory Trust III [Member]
Subordinated Borrowing [Line Items]
Initial Rate	2.94%
Wilshire Statutory Trust III [Member] | Trust Preferred Security Amount
Subordinated Borrowing [Line Items]
Trust Preferred Security Amount	$ 20,000,000
Wilshire Statutory Trust III [Member] | Subordinated Debentures Amount
Subordinated Borrowing [Line Items]
Carrying Value of Subordinated Debentures Amount	$ 15,158,000
Wilshire Statutory Trust III [Member]
Subordinated Borrowing [Line Items]
Initial Rate	2.53%
Wilshire Statutory Trust III [Member] | Trust Preferred Security Amount
Subordinated Borrowing [Line Items]
Trust Preferred Security Amount	$ 15,000,000
Wilshire Statutory Trust III [Member] | Subordinated Debentures Amount
Subordinated Borrowing [Line Items]
Carrying Value of Subordinated Debentures Amount	$ 10,635,000
Wilshire Statutory Trust IV [Member]
Subordinated Borrowing [Line Items]
Initial Rate	2.51%
Wilshire Statutory Trust IV [Member] | Trust Preferred Security Amount
Subordinated Borrowing [Line Items]
Trust Preferred Security Amount	$ 25,000,000
Wilshire Statutory Trust IV [Member] | Subordinated Debentures Amount
Subordinated Borrowing [Line Items]
Carrying Value of Subordinated Debentures Amount	$ 17,275,000
Saehan Capital Trust I [Member]
Subordinated Borrowing [Line Items]
Initial Rate	2.77%
Saehan Capital Trust I [Member] | Trust Preferred Security Amount
Subordinated Borrowing [Line Items]
Trust Preferred Security Amount	$ 20,000,000
Saehan Capital Trust I [Member] | Subordinated Debentures Amount
Subordinated Borrowing [Line Items]
Carrying Value of Subordinated Debentures Amount	$ 14,447,000

Subordinated Debentures - Narra

Subordinated Debentures - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Subordinated Borrowing [Line Items]
Trust Preferred Security Amount	$ 126,000,000
Right to defer consecutive payments of interest, maximum term	5 years
Other assets
Subordinated Borrowing [Line Items]
Investment in common trust securities	$ 3,900,000	$ 3,900,000
Trust Preferred Securities Subject to Mandatory Redemption
Subordinated Borrowing [Line Items]
Trust Preferred Security Amount	$ 126,000,000
Percent included in tier one capital, maximum	25.00%
Excess of percent threshold included in tier two capital	25.00%

Derivative Financial Instrume65

Derivative Financial Instruments (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Liability, Notional Amount	$ 263,153	$ 223,098
Derivative, Average Remaining Maturity	7 years 6 months 19 days	7 years 5 months
Interest Rate Swap [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Asset, Notional Amount	$ 263,153	$ 223,098
Individual Counterparty [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Fixed Interest Rate	4.34%	4.29%
Derivative, Variable Interest Rate	3.21%	3.06%
Derivative, Fair Value, Net	$ (1,623)	$ (1,565)
Corporation [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Fixed Interest Rate	4.34%	4.29%
Derivative, Variable Interest Rate	3.21%	3.06%
Derivative, Fair Value, Net	$ 1,623	$ 1,565

Derivative Financial Instrume66

Derivative Financial Instruments - Summary of Derivative Notional Amounts and Fair Values (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Derivative [Line Items]
Derivative Liability, Notional Amount	$ 263,153	$ 223,098
Interest Rate Lock Commitments [Member]
Derivative [Line Items]
Derivative, Notional Amount	17,500	23,700
Derivative Asset, Notional Amount	6,801	11,168
Derivative Asset, Fair Value	113	130
Derivative Liability, Notional Amount	0	1,810
Derivative Liability, Fair Value	0	(3)
Forward Contracts [Member] | Short [Member]
Derivative [Line Items]
Derivative, Notional Amount	6,800	13,000
Derivative Asset, Notional Amount	626	3,223
Derivative Asset, Fair Value	0	17
Derivative Liability, Notional Amount	6,175	9,755
Derivative Liability, Fair Value	$ (40)	$ (38)

Commitments and contingencies (

Commitments and contingencies (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Supply Commitment [Line Items]
Operating Leases, Future Minimum Payments Due, Next Twelve Months	$ 53,954	$ 51,059
Loss Contingency Accrual	412	557
Interest Rate Lock Commitments [Member]
Supply Commitment [Line Items]
Derivative, Notional Amount	17,500	23,700
Short [Member] | Forward Contracts [Member]
Supply Commitment [Line Items]
Derivative, Notional Amount	6,800	13,000
Commitments to Extend Credit [Member]
Supply Commitment [Line Items]
Supply Commitment, Remaining Minimum Amount Committed	1,648,190	1,592,221
Standby Letters of Credit [Member]
Supply Commitment [Line Items]
Supply Commitment, Remaining Minimum Amount Committed	63,349	63,753
Letter of Credit [Member]
Supply Commitment [Line Items]
Supply Commitment, Remaining Minimum Amount Committed	71,573	52,125
Low Income Housing Tax Credit [Member]
Supply Commitment [Line Items]
Supply Commitment, Remaining Minimum Amount Committed	$ 31,530	$ 24,409

Goodwill, Intangible Assets, 68

Goodwill, Intangible Assets, and Servicing Assets - Intangible Assets (Details) - USD ($)	3 Months Ended
	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016	Jul. 29, 2016
Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 463,975,000	$ 462,997,000
Goodwill impairment	0		$ 0
Gross Carrying Amount	25,605,000
Accumulated Amortization	(7,055,000)
Core Deposits
Finite-Lived Intangible Assets [Line Items]
Amortization expense related to core deposit intangible qssets	$ 676,000		$ 212,000
Center Financial Corporation | Core Deposits
Finite-Lived Intangible Assets [Line Items]
Amortization period	7 years
Gross Carrying Amount	$ 4,100,000
Accumulated Amortization	$ (3,755,000)
Pacific International Bancorp, Inc. | Core Deposits
Finite-Lived Intangible Assets [Line Items]
Amortization period	7 years
Gross Carrying Amount	$ 604,000
Accumulated Amortization	$ (484,000)
Foster Bankshares Inc | Core Deposits
Finite-Lived Intangible Assets [Line Items]
Amortization period	10 years
Gross Carrying Amount	$ 2,763,000
Accumulated Amortization	(1,417,000)
Wilshire Bancorp, Inc
Finite-Lived Intangible Assets [Line Items]
Goodwill	358,600,000			$ 358,574,000
Goodwill, acquired during period	359,000,000
Goodwill, Purchase Accounting Adjustments		(1,400,000)
Goodwill, Period Increase (Decrease)	$ 978,000	$ (1,400,000)
Wilshire Bancorp, Inc | Core Deposits
Finite-Lived Intangible Assets [Line Items]
Amortization period	10 years
Gross Carrying Amount	$ 18,138,000
Accumulated Amortization	$ (1,399,000)

Goodwill, Intangible Assets, 69

Goodwill, Intangible Assets, and Servicing Assets - Servicing Assets (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Servicing Liability at Amortized Cost, Balance	$ 1,524,441		$ 1,547,110
Servicing Asset at Amortized Cost, Balance [Roll Forward]
Balance at beginning of period	26,457	$ 12,000	12,000
Additions through originations of servicing assets	1,296	777
Amortization	(1,812)	(921)
Balance at end of period	$ 25,941	$ 11,856	$ 26,457
SBA Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Discount Rate	10.29%		9.85%
SBA Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Prepayment Speed	8.18%		8.05%
Mortgage Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Discount Rate	9.66%		7.25%
Mortgage Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Prepayment Speed	7.71%		13.77%

Income Taxes Narrative (Details

Income Taxes Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Income Tax Examination [Line Items]
INCOME TAX PROVISION	$ 22,999,000	$ 16,210,000
Pretax income	$ 59,209,000	$ 39,833,000
Effective income tax rate	38.84%	40.69%
Unrecognized tax benefits			$ 2,200,000
Interest accrued	$ 331,000		306,000
Penalties accrued	0		$ 0
Decrease in unrecognized tax benefits is reasonably possible	1,000,000
Tax effects of issuance of shares from various stock plans	73,000
Series of Individually Immaterial Business Acquisitions [Member]
Income Tax Examination [Line Items]
Interest accrued	$ 100,000

Income Taxes Reconciliation o71

Income Taxes Reconciliation of effective tax rate (Details)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Income Tax Disclosure [Abstract]
Statutory tax rate	35.00%	35.00%
State taxes-net of federal tax effect	7.18%	7.32%
Affordable housing partnership investment tax credit	(2.93%)	(1.29%)
Bank owned life insurance	(0.16%)	(0.24%)
Municipal securities	(0.25%)	(0.21%)
Nondeductible transaction costs	0.08%	0.48%
Other	(0.08%)	(0.37%)
Effective income tax rate	38.84%	40.69%

Fair Value Measurements - Asset

Fair Value Measurements - Assets and Liabilities Measured at Fair Value, Recurring (Details) - USD ($)	3 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Assets:
Securities available for sale, at fair value	$ 1,583,946,000	$ 1,556,740,000
Reclassification adjustments for gains realized in income	0
Collateralized Debt Obligations [Member]
Assets:
Securities available for sale, at fair value	9,998,000	12,008,000
GSE collateralized mortgage obligations
Assets:
Securities available for sale, at fair value	726,619,000	705,667,000
GSE mortgage-backed securities
Assets:
Securities available for sale, at fair value	732,692,000	728,041,000
Trust preferred securities
Assets:
Securities available for sale, at fair value	4,313,000	11,127,000
Municipal bonds
Assets:
Securities available for sale, at fair value	97,254,000	86,839,000
Mutual funds
Assets:
Securities available for sale, at fair value	13,070,000	13,058,000
Recurring basis | Collateralized Debt Obligations [Member]
Assets:
Securities available for sale, at fair value	9,998,000	12,008,000
Recurring basis | GSE collateralized mortgage obligations
Assets:
Securities available for sale, at fair value	726,619,000	705,667,000
Recurring basis | GSE mortgage-backed securities
Assets:
Securities available for sale, at fair value	732,692,000	728,041,000
Recurring basis | Trust preferred securities
Assets:
Securities available for sale, at fair value	4,313,000	11,127,000
Recurring basis | Municipal bonds
Assets:
Securities available for sale, at fair value	97,254,000	86,839,000
Recurring basis | Mutual funds
Assets:
Securities available for sale, at fair value	13,070,000	13,058,000
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets:
Derivative Asset	0	0
Mortgage Banking Derivative Assets, at Fair Value	0	0
Mortgage Banking Derivative Liabilities, at Fair Value	0	0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Collateralized Debt Obligations [Member]
Assets:
Securities available for sale, at fair value	0	0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | GSE collateralized mortgage obligations
Assets:
Securities available for sale, at fair value	0	0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | GSE mortgage-backed securities
Assets:
Securities available for sale, at fair value	0	0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Trust preferred securities
Assets:
Securities available for sale, at fair value	0	0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Municipal bonds
Assets:
Securities available for sale, at fair value	0	0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Mutual funds
Assets:
Securities available for sale, at fair value	13,070,000	13,058,000
Recurring basis | Significant Other Observable Inputs (Level 2)
Assets:
Derivative Asset	(1,623,000)	(1,565,000)
Mortgage Banking Derivative Assets, at Fair Value	113,000	147,000
Mortgage Banking Derivative Liabilities, at Fair Value	40,000	41,000
Recurring basis | Significant Other Observable Inputs (Level 2) | Collateralized Debt Obligations [Member]
Assets:
Securities available for sale, at fair value	9,998,000	12,008,000
Recurring basis | Significant Other Observable Inputs (Level 2) | GSE collateralized mortgage obligations
Assets:
Securities available for sale, at fair value	726,619,000	705,667,000
Recurring basis | Significant Other Observable Inputs (Level 2) | GSE mortgage-backed securities
Assets:
Securities available for sale, at fair value	732,692,000	728,041,000
Recurring basis | Significant Other Observable Inputs (Level 2) | Trust preferred securities
Assets:
Securities available for sale, at fair value	4,313,000	11,127,000
Recurring basis | Significant Other Observable Inputs (Level 2) | Municipal bonds
Assets:
Securities available for sale, at fair value	96,126,000	85,700,000
Recurring basis | Significant Other Observable Inputs (Level 2) | Mutual funds
Assets:
Securities available for sale, at fair value	0	0
Recurring basis | Significant Unobservable Inputs (Level 3)
Assets:
Derivative Asset	0	0
Mortgage Banking Derivative Assets, at Fair Value	0	0
Mortgage Banking Derivative Liabilities, at Fair Value	0	0
Recurring basis | Significant Unobservable Inputs (Level 3) | Collateralized Debt Obligations [Member]
Assets:
Securities available for sale, at fair value	0	0
Recurring basis | Significant Unobservable Inputs (Level 3) | GSE collateralized mortgage obligations
Assets:
Securities available for sale, at fair value	0	0
Recurring basis | Significant Unobservable Inputs (Level 3) | GSE mortgage-backed securities
Assets:
Securities available for sale, at fair value	0	0
Recurring basis | Significant Unobservable Inputs (Level 3) | Trust preferred securities
Assets:
Securities available for sale, at fair value	0	0
Recurring basis | Significant Unobservable Inputs (Level 3) | Municipal bonds
Assets:
Securities available for sale, at fair value	1,128,000	1,139,000
Recurring basis | Significant Unobservable Inputs (Level 3) | Mutual funds
Assets:
Securities available for sale, at fair value	0	0
Estimate of Fair Value Measurement [Member] | Recurring basis
Assets:
Derivative Asset	(1,623,000)	(1,565,000)
Mortgage Banking Derivative Assets, at Fair Value	113,000	147,000
Mortgage Banking Derivative Liabilities, at Fair Value	$ 40,000	$ 41,000

Fair Value Measurements - Summa

Fair Value Measurements - Summary of Derivative Notional Amounts and Fair Values (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Derivative [Line Items]
Derivative Liability, Notional Amount	$ 263,153	$ 223,098
Interest Rate Lock Commitments [Member]
Derivative [Line Items]
Derivative Asset, Notional Amount	6,801	11,168
Derivative Asset, Fair Value	113	130
Derivative Liability, Notional Amount	0	1,810
Derivative Liability, Fair Value	0	(3)
Short [Member] | Forward Contracts [Member]
Derivative [Line Items]
Derivative Asset, Notional Amount	626	3,223
Derivative Asset, Fair Value	0	17
Derivative Liability, Notional Amount	6,175	9,755
Derivative Liability, Fair Value	$ (40)	$ (38)

Fair Value Measurements - Rollf

Fair Value Measurements - Rollforward of Level 3 Assets (Details) - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Servicing Asset at Amortized Cost, Period Increase (Decrease)		$ 0
Municipal bonds
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	$ 1,139,000	1,166,000
Total (losses) or gains included in other comprehensive income	(11,000)	43,000
Ending Balance	$ 1,128,000	$ 1,209,000

Fair Value Measurements - Ass75

Fair Value Measurements - Assets Measured at Fair Value, Non-Recurring (Details) - Non-recurring basis - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Impaired loans at fair value - Real estate loans
Assets:
Assets	$ 65,125	$ 58,882
Impaired loans at fair value - Commercial business
Assets:
Assets	9,407	6,563
Impaired loans at fair value - Trade finance
Assets:
Assets	4,365	0
Impaired loans at fair value - Consumer
Assets:
Assets	97	253
Loans held for sale, net
Assets:
Assets	6,571	3,788
OREO
Assets:
Assets	19,096	21,990
Quoted Prices in Active Markets for Identical Assets (Level 1) | Impaired loans at fair value - Real estate loans
Assets:
Assets	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Impaired loans at fair value - Commercial business
Assets:
Assets	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Impaired loans at fair value - Trade finance
Assets:
Assets	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Impaired loans at fair value - Consumer
Assets:
Assets	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Loans held for sale, net
Assets:
Assets	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | OREO
Assets:
Assets	0	0
Significant Other Observable Inputs (Level 2) | Impaired loans at fair value - Real estate loans
Assets:
Assets	0	0
Significant Other Observable Inputs (Level 2) | Impaired loans at fair value - Commercial business
Assets:
Assets	0	0
Significant Other Observable Inputs (Level 2) | Impaired loans at fair value - Trade finance
Assets:
Assets	0	0
Significant Other Observable Inputs (Level 2) | Impaired loans at fair value - Consumer
Assets:
Assets	0	0
Significant Other Observable Inputs (Level 2) | Loans held for sale, net
Assets:
Assets	6,571	3,788
Significant Other Observable Inputs (Level 2) | OREO
Assets:
Assets	0	0
Significant Unobservable Inputs (Level 3) | Impaired loans at fair value - Real estate loans
Assets:
Assets	65,125	58,882
Significant Unobservable Inputs (Level 3) | Impaired loans at fair value - Commercial business
Assets:
Assets	9,407	6,563
Significant Unobservable Inputs (Level 3) | Impaired loans at fair value - Trade finance
Assets:
Assets	4,365	0
Significant Unobservable Inputs (Level 3) | Impaired loans at fair value - Consumer
Assets:
Assets	97	253
Significant Unobservable Inputs (Level 3) | Loans held for sale, net
Assets:
Assets	0	0
Significant Unobservable Inputs (Level 3) | OREO
Assets:
Assets	$ 19,096	$ 21,990

Fair Value Measurements - Total

Fair Value Measurements - Total Net Gains Losses on Assets Measured at Fair Value on a Non-Recurring Basis (Details) - Non-recurring basis - Change during period - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Impaired loans at fair value - Real estate loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total gains (losses), fair value	$ (2,002)	$ 309
Impaired loans at fair value - Commercial business
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total gains (losses), fair value	(974)	(2,672)
Impaired loans at fair value - Trade finance
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total gains (losses), fair value	(712)	1,296
Impaired loans at fair value - Consumer
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total gains (losses), fair value	(266)	(62)
Loans held for sale, net
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total gains (losses), fair value	420	15
OREO
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total gains (losses), fair value	$ (595)	$ (577)

Fair Value Measurements - Carry

Fair Value Measurements - Carrying Amounts and Estimated Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Carrying Amount
Financial Assets:
FHLB stock	$ 21,203	$ 21,964
Level 1 | Carrying Amount
Financial Assets:
Cash and cash equivalents	461,068	437,334
Level 1 | Estimated Fair Value
Financial Assets:
Cash and cash equivalents	461,068	437,334
Level 2 | Carrying Amount
Financial Assets:
Loans held for sale	19,141	22,785
Customers' liabilities on acceptances	2,771	2,899
Financial Liabilities:
Noninterest-bearing deposits	2,963,947	2,900,241
Saving and other interest bearing demand deposits	3,771,155	3,703,352
Time deposits	3,968,675	4,038,442
FHLB advances	703,850	754,290
Subordinated debentures	100,067	99,808
Accrued interest payable	10,592	10,863
Bank's liabilities on acceptances outstanding	2,771	2,899
Level 2 | Estimated Fair Value
Financial Assets:
Loans held for sale	20,291	24,492
Customers' liabilities on acceptances	2,771	2,899
Financial Liabilities:
Noninterest-bearing deposits	2,963,947	2,900,241
Saving and other interest bearing demand deposits	3,771,155	3,703,352
Time deposits	3,963,545	4,036,664
FHLB advances	698,287	749,486
Subordinated debentures	100,067	99,808
Accrued interest payable	10,592	10,863
Bank's liabilities on acceptances outstanding	2,771	2,899
Level 2/3 | Carrying Amount
Financial Assets:
Accrued interest receivable	25,683	26,880
Level 2/3 | Estimated Fair Value
Financial Assets:
Accrued interest receivable	25,683	26,880
Level 3 | Carrying Amount
Financial Assets:
Loans receivable - net	10,471,008	10,463,989
Financial Liabilities:
Servicing Assets, Fair Value Disclosure	25,941
Level 3 | Estimated Fair Value
Financial Assets:
Loans receivable - net	10,633,834	10,666,642
Financial Liabilities:
Servicing Assets, Fair Value Disclosure	25,941
Other Investments [Member] | Level 2 | Carrying Amount
Financial Assets:
Interest bearing deposits in other financial institutions and other investments		44,202
Other Investments [Member] | Level 2/3 | Carrying Amount
Financial Assets:
Interest bearing deposits in other financial institutions and other investments	43,958
Other Investments [Member] | Level 2/3 | Estimated Fair Value
Financial Assets:
Interest bearing deposits in other financial institutions and other investments	$ 43,630	$ 43,773

Stockholders' Equity - Discussi

Stockholders' Equity - Discussion of Acquisition (Details) - USD ($) $ / shares in Units, $ in Thousands	Jul. 29, 2016	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016	Dec. 31, 2015
Business Acquisition [Line Items]
Total stockholders’ equity		$ 1,878,047	$ 1,855,473	$ 961,982	$ 938,095
Wilshire Bancorp, Inc
Business Acquisition [Line Items]
Entity shares Issued per acquiree share	0.7034
Stock issued for acquisitions	55,500,000
Share price	$ 15.37
Hope common stock issued in exchange for Wilshire common stock	$ 852,939
Hope stock options issued in exchange Wilshire stock options	$ 3,370

Stockholders' Equity - Discus79

Stockholders' Equity - Discussion of Warrants (Details) - USD ($) $ / shares in Units, $ in Millions	May 20, 2015	Mar. 31, 2017	Mar. 31, 2016
Class of Warrant or Right [Line Items]
Dividend declared (in dollars per share)		$ 0.12	$ 0.11
Common Stock
Class of Warrant or Right [Line Items]
Potential repurchase		350,767
Redemption of common stock warrant	$ 1.2
Maximum number of shares callable by warrants		19,963

Stockholders' Equity - Stockhol

Stockholders' Equity - Stockholders’ Equity (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016	Jun. 30, 2016	Jun. 30, 2015
Stockholders’ Equity and Regulatory Matters [Abstract]
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]	no
Accumulated other comprehensive income (loss)	$ (12,849)	$ 7,155	$ (14,657)	$ (14,657)	$ (1,832)
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, before Reclassification Adjustments and Tax	3,132	15,592
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent	1,324	6,605
Other comprehensive income (loss)	$ 1,808	$ 8,987

Regulatory Matters (Details)

Regulatory Matters (Details) - USD ($)	Mar. 31, 2017	Dec. 31, 2016
Company
Total capital (to risk-weighted assets), Amount
Total Capital, Actual	$ 1,591,852,000	$ 1,578,690,000
Total Capital, Required For Capital Adequacy Purposes	925,708,000	926,076,000
Required for Capital Adequacy with Capital Buffer	1,070,350,000	998,425,000
Tier I capital (to risk-weighted assets), Amount
Tier I Capital, Actual (Risk Based)	1,509,758,000	1,496,153,000
Tier I Capital, Required For Capital Adequacy Purposes	694,281,000	694,557,000
Tier 1 Capital, Required for Capital Adequacy with Capital Buffer	838,923,000	766,906,000
Tier I capital (to average assets), Amount
Tier I Capital, Actual (Leverage)	1,509,758,000	1,496,153,000
Tier I Capital, Required For Capital Adequacy Purposes	$ 515,352,000	$ 520,947,000
Total capital and Tier I capital (to risk-weighted assets), Ratio
Total Capital (to Risk Weighted Assets), Actual	13.76%	13.64%
Total Capital (to Risk Weighted Assets), Minimum For Capital Adequacy Purposes	8.00%	8.00%
Total Capital (to Risk Weighted assets), Minimum Required for Capital Adequacy with Capital Buffer	9.25%	8.63%
Tier I Capital (to Risk Weighted Assets), Actual (Risk Based)	13.05%	12.92%
Tier I Capital (to Risk Weighted Assets), Minimum For Capital Adequacy Purposes (Risk Based)	6.00%	6.00%
Tier 1 Capital (to Risk Weighted Assets), Minimum Required for Capital Adequacy with Capital Buffer	7.25%	6.625%
Tier I capital (to average assets), Ratio
Tier I Capital (to Average Assets), Actual (Leverage)	11.72%	11.49%
Tier I Capital (to Average Assets), Minimum For Capital Adequacy Purposes (Leverage)	4.00%	4.00%
Bank
Total capital (to risk-weighted assets), Amount
Total Capital, Actual	$ 1,571,333,000	$ 1,557,765,000
Total Capital, Required For Capital Adequacy Purposes	925,199,000	925,566,000
Required for Capital Adequacy with Capital Buffer	1,069,762,000	997,876,000
Required To Be Well Capitalized under Prompt Corrective Action Provisions	1,156,499,000	1,156,957,000
Tier I capital (to risk-weighted assets), Amount
Tier I Capital, Actual (Risk Based)	1,489,239,000	1,475,228,000
Tier I Capital, Required For Capital Adequacy Purposes	693,899,000	694,174,000
Tier 1 Capital, Required for Capital Adequacy with Capital Buffer	838,462,000	766,484,000
Tier I Capital, Minimum to be Well Capitalized Under Prompt Corrective Action Provisions (Risk Based)	925,199,000	925,566,000
Tier I capital (to average assets), Amount
Tier I Capital, Actual (Leverage)	1,489,239,000	1,475,228,000
Tier I Capital, Required For Capital Adequacy Purposes	515,212,000	520,903,000
Tier I Capital, Minimum to be Well Capitalized Under Prompt Corrective Action Provisions (Leverage)	$ 644,014,000	$ 651,129,000
Total capital and Tier I capital (to risk-weighted assets), Ratio
Total Capital (to Risk Weighted Assets), Actual	13.59%	13.46%
Total Capital (to Risk Weighted Assets), Minimum For Capital Adequacy Purposes	8.00%	8.00%
Total Capital (to Risk Weighted assets), Minimum Required for Capital Adequacy with Capital Buffer	9.25%	8.63%
Total Capital (to Risk Weighted Assets), Minimum to be Well Capitalized Under Prompt Corrective Action Provisions	10.00%	10.00%
Tier I Capital (to Risk Weighted Assets), Actual (Risk Based)	12.88%	12.75%
Tier I Capital (to Risk Weighted Assets), Minimum For Capital Adequacy Purposes (Risk Based)	6.00%	6.00%
Tier 1 Capital (to Risk Weighted Assets), Minimum Required for Capital Adequacy with Capital Buffer	7.25%	6.625%
Tier I Capital (to Risk Weighted Assets), Minimum to be Well Capitalized Under Prompt Corrective Action Provisions (Risk Based)	8.00%	8.00%
Tier I capital (to average assets), Ratio
Tier I Capital (to Average Assets), Actual (Leverage)	11.56%	11.33%
Tier I Capital (to Average Assets), Minimum For Capital Adequacy Purposes (Leverage)	4.00%	4.00%
Tier I Capital (to Average Assets), Minimum to be Well Capitalized Under Prompt Corrective Action Provisions (Leverage)	5.00%	5.00%
Common Equity Tier 1 [Member] | Company
Tier I capital (to risk-weighted assets), Amount
Tier I Capital, Actual (Risk Based)	$ 1,413,592,000	$ 1,400,246,000
Tier I Capital, Required For Capital Adequacy Purposes	520,711,000	520,917,000
Tier 1 Capital, Required for Capital Adequacy with Capital Buffer	$ 665,353,000	$ 593,267,000
Total capital and Tier I capital (to risk-weighted assets), Ratio
Tier I Capital (to Risk Weighted Assets), Actual (Risk Based)	12.22%	12.10%
Tier I Capital (to Risk Weighted Assets), Minimum For Capital Adequacy Purposes (Risk Based)	4.50%	4.50%
Tier 1 Capital (to Risk Weighted Assets), Minimum Required for Capital Adequacy with Capital Buffer	5.75%	5.125%
Common Equity Tier 1 [Member] | Bank
Tier I capital (to risk-weighted assets), Amount
Tier I Capital, Actual (Risk Based)	$ 1,489,239,000	$ 1,475,228,000
Tier I Capital, Required For Capital Adequacy Purposes	520,425,000	520,630,740
Tier 1 Capital, Required for Capital Adequacy with Capital Buffer	664,987,000	592,941,000
Tier I Capital, Minimum to be Well Capitalized Under Prompt Corrective Action Provisions (Risk Based)	$ 751,724,437.4900	$ 752,022,180
Total capital and Tier I capital (to risk-weighted assets), Ratio
Tier I Capital (to Risk Weighted Assets), Actual (Risk Based)	12.88%	12.75%
Tier I Capital (to Risk Weighted Assets), Minimum For Capital Adequacy Purposes (Risk Based)	4.50%	4.50%
Tier 1 Capital (to Risk Weighted Assets), Minimum Required for Capital Adequacy with Capital Buffer	5.75%	5.125%
Tier I Capital (to Risk Weighted Assets), Minimum to be Well Capitalized Under Prompt Corrective Action Provisions (Risk Based)	6.50%	6.50%