Hope Bancorp (HOPE) 10-Q 8 Nov 17 2017 Q3 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2017	Nov. 02, 2017
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q3
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		135,498,278

Consolidated Statements Of Fina

Consolidated Statements Of Financial Condition - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Cash and cash equivalents:
Cash and due from banks	$ 159,609	$ 168,827
Interest bearing cash in other banks	245,687	268,507
Total cash and cash equivalents	405,296	437,334
Interest bearing deposits in other financial institutions and other investments	53,715	44,202
Securities available for sale, at fair value	1,868,309	1,556,740
Loans held for sale, at the lower of cost or fair value	11,425	22,785
Loans receivable (net of allowance for loan losses of $83,633 and $79,343 at September 30, 2017 and December 31, 2016, respectively)	10,879,341	10,463,989
Other real estate owned (“OREO”), net	17,208	21,990
Federal Home Loan Bank (“FHLB”) stock, at cost	28,426	21,964
Premises and equipment, net	55,838	55,316
Accrued interest receivable	29,145	26,880
Deferred tax assets, net	83,230	88,110
Customers’ liabilities on acceptances	1,433	2,899
Bank owned life insurance (“BOLI”)	74,514	73,696
Investments in affordable housing partnerships	88,540	70,059
Goodwill	464,450	462,997
Core deposit intangible assets, net	17,198	19,226
Servicing assets	25,079	26,457
Other assets	46,874	46,778
Total assets	14,150,021	13,441,422
LIABILITIES:
Noninterest bearing	3,049,998	2,900,241
Interest bearing:
Money market and NOW accounts	3,685,973	3,401,446
Savings deposits	243,042	301,906
Time deposits	4,014,307	4,038,442
Total deposits	10,993,320	10,642,035
FHLB advances	1,018,046	754,290
Subordinated debentures	100,590	99,808
Accrued interest payable	13,740	10,863
Acceptances outstanding	1,433	2,899
Commitments to fund investments in affordable housing partnerships	42,433	24,409
Other liabilities	46,028	51,645
Total liabilities	12,215,590	11,585,949
STOCKHOLDERS’ EQUITY:
Common stock, $0.001 par value; authorized 150,000,000 shares at September 30, 2017 and December 31, 2016: issued and outstanding, 135,467,176 and 135,240,079 shares at September 30, 2017 and December 31, 2016, respectively	135	135
Additional paid-in capital	1,403,586	1,400,490
Retained earnings	540,921	469,505
Accumulated other comprehensive loss, net	(10,211)	(14,657)
Total stockholders’ equity	1,934,431	1,855,473
Total liabilities and stockholders’ equity	$ 14,150,021	$ 13,441,422

Consolidated Statements Of Fin3

Consolidated Statements Of Financial Condition (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Loans receivable, allowance	$ 80,074	$ 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	135,297,678	135,240,079
Common stock, shares outstanding	135,297,678	135,240,079

Consolidated Statements Of Inco

Consolidated Statements Of Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
INTEREST INCOME:
Loans, including fees	$ 136,822	$ 112,132	$ 388,631	$ 266,336
Securities	9,540	6,645	26,394	18,051
Interest bearing deposits in other banks and other investments	1,281	775	3,894	2,160
Total interest income	147,643	119,552	418,919	286,547
INTEREST EXPENSE:
Deposits	20,376	13,017	53,001	33,276
FHLB advances	2,698	2,161	7,176	5,370
Other borrowings	1,306	900	3,754	1,755
Total interest expense	24,380	16,078	63,931	40,401
NET INTEREST INCOME BEFORE PROVISION FOR LOAN LOSSES	123,263	103,474	354,988	246,146
PROVISION FOR LOAN LOSSES	5,400	6,500	13,760	8,200
NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES	117,863	96,974	341,228	237,946
NONINTEREST INCOME:
Service fees on deposit accounts	5,151	4,778	15,668	10,363
International service fees	1,107	1,010	3,334	2,601
Loan servicing fees, net	1,373	955	4,102	2,234
Wire transfer fees	1,287	1,158	3,816	2,966
Net gains on sales of SBA loans	3,631	230	10,148	5,090
Net gains on sales of other loans	847	1,476	1,619	1,519
Gain (Loss) on Sale of Securities, Net	0	948	0	948
Other income and fees	2,850	3,591	11,277	7,906
Total noninterest income	16,246	14,146	49,964	33,627
NONINTEREST EXPENSE:
Salaries and employee benefits	35,987	30,456	105,099	73,782
Occupancy	7,131	6,889	21,479	16,626
Furniture and equipment	3,642	3,297	10,611	7,921
Advertising and marketing	2,217	2,306	8,035	4,845
Data processing and communications	3,221	3,199	9,503	7,499
Professional fees	3,239	1,898	10,401	4,255
Investments in affordable housing partnership expenses	2,803	1,457	8,019	2,133
FDIC assessments	1,262	1,564	3,276	3,697
Credit related expenses	(2,487)	810	(491)	2,142
OREO expense, net	678	(423)	2,863	1,138
Merger and integration expenses	260	11,222	1,769	13,962
Other	3,884	5,171	13,009	10,244
Total noninterest expense	61,837	67,846	193,573	148,244
INCOME BEFORE INCOME TAXES	72,272	43,274	197,619	123,329
INCOME TAX PROVISION	27,708	17,169	76,158	50,212
NET INCOME	$ 44,564	$ 26,105	$ 121,461	$ 73,117
EARNINGS PER COMMON SHARE
Basic	$ 0.33	$ 0.22	$ 0.90	$ 0.80
Diluted	$ 0.33	$ 0.22	$ 0.90	$ 0.79

Consolidated Statements Of Comp

Consolidated Statements Of Comprehensive Income - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement of Comprehensive Income [Abstract]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax				$ 572,000
Net income	$ 44,564,000	$ 26,105,000	$ 121,461,000	73,117,000
Other comprehensive (loss) income:
Change in unrealized net holding (losses) gains on securities available for sale	(208,000)	(3,383,000)	7,741,000	18,857,000
Change in unrealized net holding (losses) gains on interest only strips	(3,000)	535,000	(44,000)	490,000
Reclassification adjustment for gains realized in income	0	948,000	0	948,000
Less tax effect	(89,000)	(1,239,000)	3,251,000	8,150,000
Other comprehensive (loss) income, net of tax	(122,000)	(2,557,000)	4,446,000	10,249,000
Total comprehensive income	$ 44,442,000	$ 23,548,000	$ 125,907,000	$ 83,366,000

Consolidated Statements Of Chan

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	1,098		1,098
Issuance of additional shares pursuant to various stock plans, shares		49,559
Stock-based compensation	1,967		1,967
Issuance of Hope stock options in exchange for Wilshire stock options	3,370		3,370
Issuance of share in exchange for Wilshire common stock		55,493,726
Stock Issued During Period, Value, Acquisitions	852,939	$ 55	852,884
Cash dividends declared on common stock	(26,264)			(26,264)
Comprehensive income:
Net income	73,117			73,117
Other comprehensive income (loss)	10,249				10,249
Balance at Sep. 30, 2016	1,854,571	$ 135	1,400,915	445,104	8,417
Balance, shares at Sep. 30, 2016		135,109,641
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	1,278		1,278
Issuance of additional shares pursuant to various stock plans, shares		227,097
Stock-based compensation	1,818		1,818
Cash dividends declared on common stock	(50,045)			(50,045)
Comprehensive income:
Net income	121,461			121,461
Other comprehensive income (loss)	4,446				4,446
Balance at Sep. 30, 2017	$ 1,934,431	$ 135	$ 1,403,586	$ 540,921	$ (10,211)
Balance, shares at Sep. 30, 2017		135,467,176

Consolidated Statements Of Cash

Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 121,461	$ 73,117
Adjustments to reconcile net income to net cash from operating activities:
Depreciation, amortization, net of discount accretion	(9,270)	(1,574)
Stock-based compensation expense	2,298	1,967
Provision for loan losses	13,760	8,200
Credit for unfunded loan commitments	(2,358)	(191)
Valuation adjustment of premises held for sale	1,084	0
Valuation adjustment of OREO	2,001	1,025
Net gains on sales of SBA and other loans	(11,767)	(6,609)
Earnings on BOLI	(818)	(1,032)
Net change in fair value of derivatives	46	285
Net (gains) losses on sale and disposal of premises and equipment	(277)	2,449
Net (gains) losses on sales of OREO	(34)	97
Net gains on sales of securities available for sale	0	(948)
Losses on investments in affordable housing partnership	7,766	3,057
Net change in deferred income taxes	891	5,183
Proceeds from sales of loans held for sale	221,821	127,467
Originations of loans held for sale	(200,951)	(156,908)
Originations of servicing assets	(4,096)	(2,472)
Net change in accrued interest receivable	(2,265)	256
Net change in other assets	(592)	(3,654)
Net change in accrued interest payable	2,877	1,092
Net change in other liabilities	(3,259)	(18,276)
Net cash provided by operating activities	138,318	32,531
CASH FLOWS FROM INVESTING ACTIVITIES
Net cash received from acquisition - Wilshire Bancorp, Inc.	0	100,124
Purchases of interest bearing deposits in other financial institutions and other investments	(28,615)	(1,960)
Redemption of interest bearing deposits in other financial institutions and other investments	19,102	0
Purchase of securities available for sale	(504,831)	(428,867)
Proceeds from matured or paid-down securities available for sale	193,320	167,101
Proceeds from sale of securities available for sale	0	217,077
Proceeds from sales of other loans held for sale	417	0
Net change in loans receivable	(407,767)	(500,329)
Proceeds from sales of OREO	7,542	12,196
Purchase of FHLB stock	(7,223)	(30)
Redemption of FHLB stock	761	12,084
Purchase of premises and equipment	(10,271)	(10,788)
Proceeds from sales and disposals of premises and equipment held for sale	3,267	0
Investments in affordable housing partnerships	(8,476)	0
Net cash used in investing activities	(742,774)	(433,392)
CASH FLOWS FROM FINANCING ACTIVITIES
Net change in deposits	356,185	551,541
Proceeds from FHLB advances	815,000	725,000
Repayment of FHLB advances	(550,000)	(705,000)
Cash dividends paid on common stock	(50,045)	(26,264)
Issuance of additional stock pursuant to various stock plans	1,278	1,098
Net cash provided by financing activities	572,418	546,375
NET CHANGE IN CASH AND CASH EQUIVALENTS	(32,038)	145,514
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	437,334	298,389
CASH AND CASH EQUIVALENTS, END OF PERIOD	405,296	443,903
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION
Interest paid	66,416	36,700
Income taxes paid	85,384	48,378
SUPPLEMENTAL DISCLOSURES OF NON-CASH ACTIVITIES
Transfer from loans receivable to OREO	7,173	4,823
Transfer from loans receivable to loans held for sale	429	1,392
Transfer from loans held for sale to loans receivable	1,829	0
Transfer from premises and equipment to premises held for sale	3,300	0
New commitments to fund affordable housing partnership investments	26,500	0
Assets acquired from Wilshire	0	4,627,636
Liabilities assumed from Wilshire	0	4,130,342
Equity issued in consideration for Wilshire	$ 0	$ 856,309

Hope Bancorp, Inc.

Hope Bancorp, Inc.	9 Months Ended
	Sep. 30, 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 September 30, 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 Virginia, Texas, Oregon, Washington, Georgia, 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 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 the 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	9 Months Ended
	Sep. 30, 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 September 30, 2017 and December 31, 2016 and the results of operations for the three and nine months ended September 30, 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. 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 a 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 2017-08, “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 its consolidated financial statements. In September 2017, the FASB issued ASU 2017-12, Derivatives and Hedging (Topic 815) , “ Targeted Improvements to Accounting for Hedging Activities”. ASU 2017-12 refines and expands hedge accounting for both financial (e.g., interest rate) and commodity risks. Its provisions create more transparency around how economic results are presented, both on the face of the financial statements and in the footnotes, for investors and analysts. The amendments also simplify the application of hedge accounting in certain situations. The new guidance eliminates the requirement to separately measure and report hedge ineffectiveness and generally requires the entire change in the fair value of a hedging instrument to be presented in the same income statement line as the hedged item. In addition, the guidance also eases certain documentation and assessment requirements and modifies the accounting for components excluded from the assessment of hedge effectiveness. ASU 2017-12 is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. Early adoption is permitted. The Company is currently in the process of evaluating the impact of ASU 2017-12 on its consolidated financial statements, but does not expect the adoption of ASU 2017-12 to have material impact on its consolidated financial statements.

Mergers and Acquisitions

Mergers and Acquisitions	9 Months Ended
	Sep. 30, 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. Termination of 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 would have merged 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, would have merged with and into the Bank. Subsequently on September 15, 2017, the Company announced the mutual termination of the proposed merger with U & I as the Company was unable to obtain the required regulatory approval prior to the transaction termination deadline of September 23, 2017. The Mutual Termination Agreement provides, among other things, that each party will bear its own costs and expenses in connection with the terminated transaction, without penalties or termination fees. In connection with the termination, the parties have provided mutual releases from any claims of liability to one another relating to the merger transaction. 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. 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, has loan production offices throughout the country, 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 17,698 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 $ 497,262 Excess of consideration paid over fair value of net assets acquired (goodwill) $ 359,050 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 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. During the second quarter of 2017, the Company made an adjustment of $475 thousand to deferred tax assets which increased goodwill by the same amount. 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 the time of the merger with Wilshire on July 29, 2016, the fair value of loans acquired from Wilshire with deteriorated credit quality totaled $243.1 million . The carrying balance of the acquired loans included in the Statement of Financial Condition at September 30, 2017 and was $3.10 billion for loans acquired from Wilshire compared to $3.59 billion at December 31, 2016 . Merger-Related Expenses The following table presents merger-related expenses associated with the merger with Wilshire, the terminated merger with U & I, and other previous transactions which were reflected in the Consolidated Statements of Income in merger and integration expenses. These expenses are comprised primarily of salaries and employee benefits, professional fees, and other noninterest expenses related to mergers. Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 (Dollars in thousands) Wilshire $ 288 $ 11,198 $ 1,226 $ 13,890 U & I (52 ) — 471 — Other 24 24 72 72 Total merger and integration expenses $ 260 $ 11,222 $ 1,769 $ 13,962

Stock-Based Compensation

Stock-Based Compensation	9 Months Ended
	Sep. 30, 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 “2016 Plan”) to award equity as a form of compensation. The 2016 Plan, was approved by the Company’s stockholders on September 1, 2016. The 2016 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 2016 Plan gives the Company flexibility to (i) attract and retain qualified non-employee directors, executives, other key employees, and consultants with appropriate equity-based awards to; (ii) motivate high levels of performance; (iii) recognize employee contributions to the Company’s success; and (iv) align the interests of the 2016 Plan participants with those of the Company’s stockholders. The plan initially had 2,400,000 shares available for grant to participants. 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 2016 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 2016 Plan. All options not exercised generally expire 10 years after the date of grant. 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 had another stock-based incentive plan, the 2007 Equity Incentive Plan (“2007 Plan”), which was approved by stockholders in May 2007. Under the terms of this plan, awards cannot be granted under the plan more than ten years after the plan adoption date. Therefore, subsequent to May 2017, equity awards can no longer be issued from this plan. Under the 2016 Plan, 1,331,888 shares were available for future grants as of September 30, 2017 . The total shares reserved for issuance will serve as the underlying value for all equity awards under the 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 nine months ended September 30, 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 1,603,876 $ 15.28 Granted — — Exercised (172,959 ) 7.19 Expired (268,070 ) 21.35 Forfeited (38,421 ) 17.17 Outstanding - September 30, 2017 1,124,426 $ 15.01 7.43 $ 3,035 Options exercisable - September 30, 2017 669,089 $ 13.71 6.62 $ 2,679 The following is a summary of restricted stock and performance unit activity under the 2007 Plan and 2016 Plan for the nine months ended September 30, 2017 : Number of Shares Weighted- Average Grant Date Fair Value Outstanding - January 1, 2017 398,658 $ 16.16 Granted 165,612 16.77 Vested (145,392 ) 16.16 Forfeited (21,332 ) 16.13 Outstanding - September 30, 2017 397,546 $ 16.41 The total fair value of restricted stock and performance units vested for the nine months ended September 30, 2017 and 2016 was $2.6 million and $1.7 million , respectively. On August, 21, 2017 the Company adopted the Hope Employee Stock Purchase Plan (“ESPP”). The ESPP allows eligible employees to purchase the Company’s common shares through payroll deductions which build up between the offering date and the purchase date. At the purchase date, the Company uses the accumulated funds to purchase shares in the Company on behalf of the participating employees at 10% discount of the closing price of the Company’s common shares. The closing price is the lower of either the closing price on the first day of the offering period or on the closing price on the purchase date. The dollar amount of common shares purchased under the ESPP must not exceed 20% of the participating employee’s base salary, subject to a cap of $25 thousand in stock value based on the grant date. The ESPP is considered compensatory under GAAP and compensation expense for the ESPP is recognized as part of the Company’s stock based compensation expenses. The compensation expense for ESPP during the three and nine months ended September 30, 2017 was $18 thousand . The Company did not have any compensation expenses for the ESPP during the three or nine months ended September 30, 2016 . The amount charged against income related to stock-based payment arrangements and the ESPP was $792 thousand and $1.9 million for the three months ended September 30, 2017 and 2016 , respectively. For the nine months ended September 30, 2017 and 2016 , $2.3 million and $2.0 million , respectively, of stock-based payment arrangements were charged against income. The income tax benefit recognized was approximately $304 thousand and $761 thousand for the three months ended September 30, 2017 and 2016 , respectively. The income tax benefit recognized for the nine months ended September 30, 2017 and 2016 , was approximately $886 thousand and $821 thousand , respectively. At September 30, 2017 , the unrecognized compensation expense related to non-vested stock option grants was $1.3 million which is expected to be recognized over a weighted average vesting period of 2.94 years. Unrecognized compensation expense related to non-vested restricted stock and performance units was $5.2 million which is expected to be recognized over a weighted average vesting period of 2.61 years. 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 and nine months ended September 30, 2017 .

Earnings Per Share ("EPS")

Earnings Per Share ("EPS")	9 Months Ended
	Sep. 30, 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 earnings. For the three months ended September 30, 2017 , stock options and restricted shares awards for 762,833 shares of common stock were excluded in computing diluted earnings per common share because they were anti-dilutive. For the nine months ended September 30, 2017 , stock options and restricted shares awards for 484,426 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 609,186 shares of common stock were excluded in computing diluted earnings per common share because they were anti-dilutive for the three months ended September 30, 2016 . Stock options and restricted shares awards for 559,790 shares of common stock were excluded in computing diluted earnings per common share because they were anti-dilutive for the nine months ended September 30, 2016 . Additionally, warrants issued pursuant to the Company’s participation in the U.S. Treasury’s TARP Capital Purchase Plan, to purchase 20,238 shares and 19,703 shares of common stock were anti-dilutive and excluded for the three and nine months ended September 30, 2017 and 2016 , respectively. The following tables show the computation of basic and diluted EPS for the three and nine months ended September 30, 2017 and 2016 . Three Months Ended September 30, 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 $ 44,564 135,382,457 $ 0.33 $ 26,105 116,622,920 $ 0.22 Effect of dilutive securities: Stock options, restricted stock, and ESPP shares 248,455 328,154 Diluted EPS - common stock $ 44,564 135,630,912 $ 0.33 $ 26,105 116,951,074 $ 0.22 Nine Months Ended September 30, 2017 2016 Net Income (Numerator) Weighted-Average Shares Per Share (Amount) Net Income (Numerator) Weighted-Average Shares Per Share (Amount) (In thousands, except share and per share data) Basic EPS - common stock $ 121,461 135,296,332 $ 0.90 $ 73,117 91,940,070 $ 0.80 Effect of dilutive securities: Stock options, restricted stock, and ESPP shares 365,633 326,175 Diluted EPS - common stock $ 121,461 135,661,965 $ 0.90 $ 73,117 92,266,245 $ 0.79

Securities Available for Sale

Securities Available for Sale	9 Months Ended
	Sep. 30, 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 September 30, 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 $ 5,000 $ — $ (1 ) $ 4,999 Collateralized mortgage obligations: Residential 911,229 332 (9,679 ) 901,882 Mortgage-backed securities: Residential 600,155 1,566 (5,451 ) 596,270 Commercial 245,972 128 (4,672 ) 241,428 Corporate securities 4,571 4 — 4,575 Municipal securities 96,785 1,063 (796 ) 97,052 Total debt securities 1,863,712 3,093 (20,599 ) 1,846,206 Mutual funds 22,425 27 (349 ) 22,103 Total investment securities available for sale $ 1,886,137 $ 3,120 $ (20,948 ) $ 1,868,309 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 599,755 1,132 (9,311 ) 591,576 Commercial 141,549 — (5,084 ) 136,465 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 September 30, 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. At September 30, 2017 and December 31, 2016 , $10.2 million and $14.6 million , respectively, in unrealized losses on securities net of taxes were included in accumulated other comprehensive loss. Also included in accumulated other comprehensive loss at September 30, 2017 and December 31, 2016 , were unrealized losses on interest only strip net of taxes of $40 thousand and $14 thousand , respectively. There were no reclassifications out of accumulated other comprehensive income into earnings for the three and nine months ended September 30, 2017 . A total of $948 thousand ( $572 thousand net of taxes) of net gains on sales of securities were reclassified out of accumulated other comprehensive income (loss) into earnings for the three and nine months ended September 30, 2016 . The amortized cost and estimated fair value of investment securities at September 30, 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 $ 5,724 $ 5,726 Due after one year through five years 11,567 11,875 Due after five years through ten years 39,563 40,060 Due after ten years 49,502 48,965 U.S. Government agency and U.S. Government sponsored enterprises Collateralized mortgage obligations: Residential 911,229 901,882 Mortgage-backed securities: Residential 600,155 596,270 Commercial 245,972 241,428 Mutual funds 22,425 22,103 Total $ 1,886,137 $ 1,868,309 Securities with carrying values of approximately $349.2 million and $382.1 million at September 30, 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 the Company’s 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 September 30, 2017 Less than 12 months 12 months or longer Total Description of Securities Number Fair Value Gross Unrealized Losses Number Fair Value Gross Unrealized Losses Number of Fair Value Gross Unrealized Losses (Dollars in thousands) Debt securities* 1 $ 4,999 $ (1 ) — $ — $ — 1 $ 4,999 $ (1 ) Collateralized mortgage obligations: Residential* 56 566,997 (4,406 ) 26 228,250 (5,273 ) 82 795,247 (9,679 ) Mortgage-backed securities: Residential* 27 291,483 (1,922 ) 13 116,490 (3,529 ) 40 407,973 (5,451 ) Commercial* 8 86,608 (804 ) 6 106,790 (3,868 ) 14 193,398 (4,672 ) Municipal securities 14 13,521 (221 ) 6 17,735 (575 ) 20 31,256 (796 ) Mutual funds 3 15,607 (108 ) 1 5,007 (241 ) 4 20,614 (349 ) Total 109 $ 979,215 $ (7,462 ) 52 $ 474,272 $ (13,486 ) 161 $ 1,453,487 $ (20,948 ) __________________________________ * 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 Fair Value Gross Unrealized Losses Number 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* 48 486,332 (9,311 ) — — — 48 486,332 (9,311 ) Commercial* 9 136,465 (5,084 ) — — — 9 136,465 (5,084 ) 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 collateralized mortgage obligations, mortgage backed securities, municipal securities, and mutual funds that were in a continuous unrealized loss position for twelve months or longer as of September 30, 2017 . The collateralized mortgage obligations in a continuous loss position for twelve months or longer had an unrealized loss of $5.3 million at September 30, 2017 and total mortgage backed securities in a continuous loss position for twelve months or longer had a total unrealized loss of $7.4 million . 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 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 $575 thousand at September 30, 2017 . Mutual funds that were in a continuous loss position for twelve months or longer had an unrealized loss of $241 thousand at September 30, 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 U.S. Government sponsored collateralized mortgage obligations and mortgage backed securities, municipal securities, and mutual funds that were in an unrealized loss position at September 30, 2017 . The Company considers the losses on the investments in unrealized loss positions at September 30, 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	9 Months Ended
	Sep. 30, 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: September 30, 2017 December 31, 2016 (Dollars in thousands) Loan portfolio composition Real estate loans: Residential $ 55,072 $ 57,884 Commercial 8,085,307 7,842,573 Construction 297,686 254,113 Total real estate loans 8,438,065 8,154,570 Commercial business 1,824,442 1,832,021 Trade finance 180,847 154,928 Consumer and other 521,459 403,470 Total loans outstanding 10,964,813 10,544,989 Deferred loan fees, net (1,839 ) (1,657 ) Loans receivable 10,962,974 10,543,332 Allowance for loan losses (83,633 ) (79,343 ) Loans receivable, net of allowance for loan losses $ 10,879,341 $ 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 and nine months ended September 30, 2017 and 2016 : Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 (Dollars in thousands) Balance at beginning of period $ 53,657 $ 20,150 $ 43,611 $ 23,777 Additions due to acquisitions during the period — 41,271 — 41,271 Accretion (5,815 ) (4,723 ) (16,375 ) (10,226 ) Reclassification from nonaccretable difference 6,696 40 27,302 1,916 Balance at end of period $ 54,538 $ 56,738 $ 54,538 $ 56,738 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 and nine months ended September 30, 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 September 30, 2017 Balance, beginning of period $ 40,478 $ 21,495 $ 1,000 $ 2,282 $ 13,411 $ 1,291 $ 106 $ 11 $ 80,074 Provision (credit) for loan losses 3,664 1,499 418 664 (1,312 ) 395 56 16 5,400 Loans charged off (175 ) (3,870 ) — (218 ) (162 ) (471 ) — (17 ) (4,913 ) Recoveries of charge offs 23 3,020 2 — — 25 — 2 3,072 Balance, end of period $ 43,990 $ 22,144 $ 1,420 $ 2,728 $ 11,937 $ 1,240 $ 162 $ 12 $ 83,633 Nine Months Ended September 30, 2017 Balance, beginning of period $ 38,956 $ 23,430 $ 1,897 $ 2,116 $ 12,791 $ 117 $ — $ 36 $ 79,343 Provision (credit) for loan losses 7,174 2,356 1,621 1,348 (406 ) 1,517 162 (12 ) 13,760 Loans charged off (2,221 ) (7,485 ) (2,104 ) (738 ) (479 ) (596 ) — (17 ) (13,640 ) Recoveries of charge offs 81 3,843 6 2 31 202 — 5 4,170 Balance, end of period $ 43,990 $ 22,144 $ 1,420 $ 2,728 $ 11,937 $ 1,240 $ 162 $ 12 $ 83,633 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 September 30, 2016 Balance, beginning of period $ 43,666 $ 16,576 $ 2,449 $ 926 $ 12,607 $ 148 $ — $ 53 $ 76,425 Provision (credit) for loan losses (2,474 ) 7,444 (32 ) 970 527 72 — (7 ) 6,500 Loans charged off (132 ) (3,219 ) — (162 ) (435 ) (10 ) — — (3,958 ) Recoveries of charge offs 432 539 — 2 8 27 — 1 1,009 Balance, end of period $ 41,492 $ 21,340 $ 2,417 $ 1,736 $ 12,707 $ 237 $ — $ 47 $ 79,976 Nine Months Ended September 30, 2016 Balance, beginning of period $ 42,829 $ 16,332 $ 3,592 $ 556 $ 12,823 $ 214 $ — $ 62 $ 76,408 Provision (credit) for loan losses (2,318 ) 9,792 (1,175 ) 1,370 633 (82 ) — (20 ) 8,200 Loans charged off (151 ) (5,845 ) — (278 ) (758 ) (43 ) — — (7,075 ) Recoveries of charge offs 1,132 1,061 — 88 9 148 — 5 2,443 Balance, end of period $ 41,492 $ 21,340 $ 2,417 $ 1,736 $ 12,707 $ 237 $ — $ 47 $ 79,976 The following tables break out the allowance for loan losses and the recorded investment of loans outstanding (not including accrued interest receivables and net deferred loan fees) by individually impaired, general valuation, and PCI impairment, by portfolio segment, at September 30, 2017 and December 31, 2016 : September 30, 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 $ 1,462 $ 4,679 $ 2 $ 4 $ 245 $ 415 $ — $ — $ 6,807 Collectively evaluated for impairment 42,528 17,465 1,418 2,724 1,081 825 162 12 66,215 PCI loans — — — — 10,611 — — — 10,611 Total $ 43,990 $ 22,144 $ 1,420 $ 2,728 $ 11,937 $ 1,240 $ 162 $ 12 $ 83,633 Loans outstanding: Individually evaluated for impairment $ 48,535 $ 35,494 $ 4,201 $ 1,048 $ 10,155 $ 4,885 $ 3,384 $ 758 $ 108,460 Collectively evaluated for impairment 5,996,526 1,437,398 133,599 339,980 2,213,662 317,150 39,663 168,844 10,646,822 PCI loans — — — — 169,187 29,515 — 10,829 209,531 Total $ 6,045,061 $ 1,472,892 $ 137,800 $ 341,028 $ 2,393,004 $ 351,550 $ 43,047 $ 180,431 $ 10,964,813 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 September 30, 2017 and December 31, 2016 , the reserve for unfunded loan commitments recorded in other liabilities was $836 thousand and $3.2 million , respectively. For the three months ended September 30, 2017 and 2016 , the recognized (credit) provision for unfunded commitments recorded in credit related expense was $(2.8) million and $270 thousand , respectively. For the nine months ended September 30, 2017 and 2016 , the recognized credit for unfunded commitments was $(2.4) million and $(191) thousand , respectively. The credit for unfunded commitments recorded in the third quarter of 2017 was a result of updated information related to credit card commitments that was used in the calculation of allowance for off balance sheet unfunded commitments. The recorded investment of individually impaired loans and the total impaired loans net of specific allowance is presented in the following table: September 30, 2017 December 31, 2016 (Dollars in thousands) With allocated specific allowance Without charge off $ 40,218 $ 59,638 With charge off 879 1,120 With no allocated specific allowance Without charge off 60,129 76,775 With charge off 7,234 2,828 Specific allowance on impaired loans (6,807 ) (7,409 ) Impaired loans, net of specific allowance $ 101,653 $ 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 September 30, 2017 and December 31, 2016 , and the average recorded investment and interest income recognized for the three and nine months ended September 30, 2017 and 2016 . Loans with no related allowance are believed by management to be adequately collateralized. As of September 30, 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 931 936 132 2,095 2,384 90 Hotel & motel 2,696 3,667 263 6,387 6,387 337 Gas station & car wash — — — 215 228 41 Mixed use 169 727 7 206 732 27 Industrial & warehouse 988 1,670 135 530 530 — Other 4,389 4,389 1,170 22,580 22,825 1,507 Real estate—construction — — — — — — Commercial business 27,292 28,713 5,094 26,543 27,161 4,493 Trade finance 4,201 4,201 2 2,111 2,156 864 Consumer and other 431 431 4 91 91 50 Subtotal $ 41,097 $ 44,734 $ 6,807 $ 60,758 $ 62,494 $ 7,409 With no related allowance: Real estate—residential $ 498 $ 1,488 $ — $ 3,562 $ 3,562 $ — Real estate—commercial Retail 10,467 12,210 — 12,753 13,290 — Hotel & motel 8,172 12,262 — 6,122 11,735 — Gas station & car wash 2,939 6,646 — 5,043 7,449 — Mixed use 1,319 3,732 — 7,303 7,822 — Industrial & warehouse 8,054 8,140 — 9,673 9,748 — Other 16,768 18,278 — 20,181 21,492 — Real estate—construction 1,300 1,441 — 1,300 1,441 — Commercial business 13,087 17,917 — 8,675 9,472 — Trade finance 3,384 5,067 — 3,918 3,918 — Consumer and other 1,375 1,453 — 1,073 1,136 — Subtotal $ 67,363 $ 88,634 $ — $ 79,603 $ 91,065 $ — Total $ 108,460 $ 133,368 $ 6,807 $ 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 September 30, For the Nine Months Ended September 30, 2017 2016 2017 2016 Total Impaired Loans Average Recorded Investment* Interest Income Recognized during Impairment Average Recorded Investment* Interest Income Recognized during Impairment 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 1,197 4 1,711 — 1,268 11 1,711 — Hotel & motel 2,269 17 1,320 16 4,330 49 2,965 48 Gas station & car wash — — 1,052 9 54 — 1,051 28 Mixed use 228 2 208 2 228 5 386 5 Industrial & warehouse 746 — 542 6 1,226 — 551 18 Other 4,572 60 23,474 259 13,534 175 23,968 776 Real estate—construction — — — — — — — — Commercial business 27,031 261 32,553 296 25,036 749 34,147 821 Trade finance 4,118 58 6,465 70 2,587 215 8,390 237 Consumer and other 251 1 548 1 169 3 338 2 Subtotal $ 40,412 $ 403 $ 67,873 $ 659 $ 48,432 $ 1,207 $ 73,507 $ 1,935 With no related allowance: Real estate—residential $ 249 $ 20 $ — $ — $ 1,381 $ 57 $ — $ — Real estate—commercial Retail 10,071 91 9,381 95 12,412 263 10,243 296 Hotel & motel 10,494 59 9,776 54 8,346 175 8,813 163 Gas station & car wash 3,022 114 4,855 25 3,812 317 4,760 75 Mixed use 1,274 109 2,195 9 4,095 324 2,279 28 Industrial & warehouse 8,390 68 10,905 89 8,738 191 10,396 268 Other 14,733 6 9,912 59 16,324 19 11,312 177 Real estate—construction 1,300 — 1,300 — 1,689 — 1,328 — Commercial business 11,544 — 13,111 26 10,417 — 11,030 79 Trade finance 1,765 — 2,225 — 2,975 — 1,113 — Consumer and other 1,305 — 800 7 1,147 — 1,014 23 Subtotal $ 64,147 $ 467 $ 64,460 $ 364 $ 71,336 $ 1,346 $ 62,288 $ 1,109 Total $ 104,559 $ 870 $ 132,333 $ 1,023 $ 119,768 $ 2,553 $ 135,795 $ 3,044 __________________________________ * Unpaid contractual principal balance less charge offs, interest collected applied to principal if on nonaccrual and purchase discounts. As of September 30, 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 661 666 127 1,826 2,114 85 Hotel & motel 87 87 2 — — — Gas station & car wash — — — — — — Mixed use 131 131 6 136 136 2 Industrial & warehouse 402 1,084 100 — — — Other 279 279 10 337 341 26 Real estate—construction — — — — — — Commercial business 1,787 2,919 415 294 339 73 Trade finance — — — — — — Consumer and other — — — — — — Subtotal $ 3,347 $ 5,166 $ 660 $ 2,593 $ 2,930 $ 186 With no related allowance: Real estate—residential $ 498 $ 1,488 $ — $ 679 $ 679 $ — Real estate—commercial Retail 1,962 2,279 — 3,148 3,214 — Hotel & motel 536 2,388 — 4,767 7,171 — Gas station & car wash 448 2,146 — 1,568 1,815 — Mixed use 162 2,240 — 5,315 5,551 — Industrial & warehouse 55 55 — 66 66 — Other 4,934 5,800 — 6,023 6,752 — Real estate—construction — — — — — — Commercial business 3,098 3,453 — 141 386 — Trade finance 3,384 5,067 — — — — Consumer and other 758 826 — 431 484 — Subtotal $ 15,835 $ 25,742 $ — $ 22,138 $ 26,118 $ — Total $ 19,182 $ 30,908 $ 660 $ 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 September 30, For the Nine Months Ended September 30, 2017 2016 2017 2016 Impaired Acquired Loans Average Recorded Investment* Interest Income Recognized during Impairment Average Recorded Investment* Interest Income Recognized during Impairment 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 927 4 1,386 — 998 11 1,277 — Hotel & motel 174 — — — 110 — — — Gas station & car wash — — — — — — 254 — Mixed use 190 2 139 2 191 5 316 5 Industrial & warehouse 452 — — — 226 — — — Other 303 4 344 4 319 11 324 13 Real estate—construction — — — — — — — — Commercial business 1,250 9 396 — 892 24 486 — Trade finance — — — — — — — — Consumer and other — — 80 — — — 40 — Subtotal $ 3,296 $ 19 $ 2,345 $ 6 $ 2,736 $ 51 $ 2,697 $ 18 With no related allowance: Real estate—residential $ 249 $ 20 $ — $ — $ 294 $ 57 $ — $ — Real estate—commercial Retail 1,709 15 2,095 21 2,729 45 2,333 72 Hotel & motel 2,671 — 4,983 3 3,737 — 5,933 10 Gas station & car wash 454 — 1,589 25 774 — 1,490 75 Mixed use 104 — 166 — 2,701 — 219 — Industrial & warehouse 60 1 1,038 2 63 2 1,075 7 Other 3,806 46 3,215 13 4,205 116 3,520 39 Real estate—construction — — — — — — — — Commercial business 1,835 47 707 4 1,014 142 690 13 Trade finance 1,692 68 — — 846 191 — — Consumer and other 684 2 361 2 518 6 459 7 Subtotal $ 13,264 $ 199 $ 14,154 $ 70 $ 16,881 $ 559 $ 15,719 $ 223 Total $ 16,560 $ 218 $ 16,499 $ 76 $ 19,617 $ 610 $ 18,416 $ 241 __________________________________ * 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 or more past due and/or management deems the collectability 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 and nine months ended September 30, 2017 or 2016 . The following tables present the recorded investment in past due loans by the number of days past due as of September 30, 2017 and December 31, 2016 by class of loans: As of September 30, 2017 Nonaccrual Loans (2) Total Delinquent and Nonaccrual Loans Past Due and Accruing 30-59 Days 60-89 Days 90 or More Days Total (Dollars in thousands) Legacy Loans: Real estate—residential $ — $ — $ — $ — $ — $ — Real estate—commercial Retail 1,168 — — 1,168 3,259 4,427 Hotel & motel 329 1,895 — 2,224 8,966 11,190 Gas station & car wash 1,755 — — 1,755 2,490 4,245 Mixed use 161 — — 161 1,196 1,357 Industrial & warehouse 1,123 — — 1,123 3,456 4,579 Other 1,418 — — 1,418 6,332 7,750 Real estate—construction — — — — 1,300 1,300 Commercial business 2,660 960 150 3,770 9,485 13,255 Trade finance — — — — — — Consumer and other 243 717 257 1,217 594 1,811 Subtotal $ 8,857 $ 3,572 $ 407 $ 12,836 $ 37,078 $ 49,914 Acquired Loans: (1) Real estate—residential $ — $ — $ — $ — $ — $ — Real estate—commercial Retail 128 — — 128 1,005 1,133 Hotel & motel — 1,521 — 1,521 621 2,142 Gas station & car wash — — — — 448 448 Mixed use — — — — 161 161 Industrial & warehouse 338 — — 338 402 740 Other 336 — — 336 1,818 2,154 Real estate—construction — — — — — — Commercial business 627 166 — 793 1,196 1,989 Trade finance — — — — — — Consumer and other — — — — 594 594 Subtotal $ 1,429 $ 1,687 $ — $ 3,116 $ 6,245 $ 9,361 TOTAL $ 10,286 $ 5,259 $ 407 $ 15,952 $ 43,323 $ 59,275 __________________________________ (1) Acquired Loans exclude PCI loans. (2) Nonaccrual loans exclude guaranteed portion of delinquent SBA loans that are in liquidation totaling $21.5 million . Includes nonaccrual loans less than 30 days past due totaling $9.1 million . As of December 31, 2016 Nonaccrual Loans (2) Total Delinquent and Nonaccrual Loans Past Due and Accruing 30-59 Days 60-89 Days 90 or More Days Total (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 September 30, 2017 and December 31, 2016 by class of loans: As of September 30, 2017 Pass/ Not Rated Special Mention Substandard Doubtful Total (Dollars in thousands) Legacy Loans: Real estate—residential $ 36,488 $ 1,035 $ 1,447 $ — $ 38,970 Real estate—commercial Retail 1,569,248 23,225 19,348 — 1,611,821 Hotel & motel 1,194,329 10,042 13,128 — 1,217,499 Gas station & car wash 729,531 12,382 4,246 — 746,159 Mixed use 400,074 4,612 1,544 — 406,230 Industrial & warehouse 568,172 15,999 22,032 — 606,203 Other 1,125,919 29,111 50,047 — 1,205,077 Real estate—construction 210,134 — 2,968 — 213,102 Commercial business 1,358,444 33,068 81,164 216 1,472,892 Trade finance 134,262 2,311 1,227 — 137,800 Consumer and other 340,187 — 841 — 341,028 Subtotal $ 7,666,788 $ 131,785 $ 197,992 $ 216 $ 7,996,781 Acquired Loans: Real estate—residential $ 15,837 $ 265 $ — $ — $ 16,102 Real estate—commercial Retail 649,572 8,974 21,643 — 680,189 Hotel & motel 285,539 9,289 20,423 2 315,253 Gas station & car wash 198,481 8,973 8,828 — 216,282 Mixed use 99,250 5,648 14,317 8 119,223 Industrial & warehouse 266,876 15,185 15,908 270 298,239 Other 600,411 36,607 26,114 — 663,132 Real estate—construction 84,584 — — — 84,584 Commercial business 310,220 7,782 33,528 20 351,550 Trade finance 39,663 — 3,384 — 43,047 Consumer and other 174,254 720 4,470 987 180,431 Subtotal $ 2,724,687 $ 93,443 $ 148,615 $ 1,287 $ 2,968,032 Total $ 10,391,475 $ 225,228 $ 346,607 $ 1,503 $ 10,964,813 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 and nine months ended September 30, 2017 and 2016 is presented in the following table: Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 Transfer of loans receivable to held for sale (Dollars in thousands) Real estate - commercial $ — $ 992 $ 429 $ 992 Consumer — — — 400 Total $ — $ 992 $ 429 $ 1,392 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 the 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 the 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 or operation 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,

Deposits

Deposits	9 Months Ended
	Sep. 30, 2017
Banking and Thrift [Abstract]
Deposits	Deposits The aggregate amount of time deposits in denominations of $250 thousand or more at September 30, 2017 and December 31, 2016 , was $1.62 billion and $1.55 billion , respectively. Included in time deposits of $250 thousand or more were $300.0 million in California State Treasurer’s deposits at September 30, 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 September 30, 2017 and December 31, 2016 , securities with carrying values of approximately $330.3 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 September 30, 2017 and December 31, 2016 , totaled $808.4 million and $724.7 million , respectively. Brokered deposits at September 30, 2017 consisted of $289.4 million in money market and NOW accounts and $519.0 million in time deposits accounts. Brokered deposits at December 31, 2016 consisted of $303.7 million in money market and NOW accounts and $421.0 million in time deposits accounts.

Borrowings

Borrowings	9 Months Ended
	Sep. 30, 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 $3.34 billion at September 30, 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 September 30, 2017 and December 31, 2016 , real estate secured loans with a carrying amount of approximately $4.85 billion and $5.53 billion , respectively, were pledged at the FHLB. At September 30, 2017 and December 31, 2016 , other than FHLB stock, no securities were pledged as collateral at FHLB. The purchase of FHLB stock is a prerequisite to become a member of the FHLB system, and the Company is required to own a certain amount of stock based on outstanding borrowings. At September 30, 2017 and December 31, 2016 , FHLB advances totaled $1.02 billion and $754.3 million , respectively had weighted average effective interest rates of 1.31% and 1.22% , respectively, and had various maturities through August 2022 . The Company had a putable advance at December 31, 2016 totaling $20.2 million with a quarterly put date which matured in September 2017. The effective interest rate of FHLB advances as of September 30, 2017 ranged between 0.88% and 2.02% . At September 30, 2017 , the Company’s remaining borrowing capacity with the FHLB was $2.32 billion . At September 30, 2017 , the contractual maturities for FHLB advances were as follows: Contractual Maturity/ (Dollars in thousands) Due within one year $ 480,000 $ 480,000 Due after one year through five years 538,046 538,046 Total $ 1,018,046 $ 1,018,046 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 September 30, 2017 , the outstanding principal balance of the qualifying loans was $549.3 million , and the fair value of investment securities was $5.7 million . There were no borrowings outstanding at the FRB discount window as of September 30, 2017 and December 31, 2016 .

Subordinated Debentures

Subordinated Debentures	9 Months Ended
	Sep. 30, 2017
Subordinated Borrowings [Abstract]
Subordinated Debentures	Subordinated Debentures At September 30, 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 September 30, 2017 : Issuance Trust Issuance Date Trust Preferred Security Amount Carrying Rate Type Current Rate Maturity Date (Dollars in thousands) Nara Capital Trust III 06/05/2003 $ 5,000 $ 5,155 Variable 4.47% 06/15/2033 Nara Statutory Trust IV 12/22/2003 5,000 5,155 Variable 4.15% 01/07/2034 Nara Statutory Trust V 12/17/2003 10,000 10,310 Variable 4.27% 12/17/2033 Nara Statutory Trust VI 03/22/2007 8,000 8,248 Variable 2.97% 06/15/2037 Center Capital Trust I 12/30/2003 18,000 13,778 Variable 4.15% 01/07/2034 Wilshire Statutory Trust II 03/17/2005 20,000 15,262 Variable 3.11% 03/17/2035 Wilshire Statutory Trust III 09/15/2005 15,000 10,723 Variable 2.72% 09/15/2035 Wilshire Statutory Trust IV 07/10/2007 25,000 17,411 Variable 2.70% 09/15/2037 Saehan Capital Trust I 03/30/2007 20,000 14,548 Variable 2.96% 06/30/2037 Total $ 126,000 $ 100,590 The Company’s investment in the common trust securities of the issuer trusts was $3.9 million at September 30, 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)	9 Months Ended
	Sep. 30, 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 September 30, 2017 As of December 31, 2016 Notional Amount Fair Value Notional Amount Fair Value (Dollars in thousands) Assets: Interest rate lock commitments $ 10,734 $ 60 $ 11,168 $ 130 Forward sale contracts related to mortgage banking $ 6,966 $ 24 $ 3,223 $ 17 Liabilities: Interest rate lock commitments $ 777 $ 2 $ 1,810 $ 3 Forward sale contracts related to mortgage banking $ 4,545 $ 23 $ 9,755 $ 38

Goodwill, Intangible Assets, an

Goodwill, Intangible Assets, and Servicing Assets	9 Months Ended
	Sep. 30, 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 intangible assets and goodwill and 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 intangible assets were not impaired and that the fair value of goodwill exceeded the carrying value and that the two-step goodwill 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 September 30, 2017 and December 31, 2016 was $464.5 million and $463.0 million , respectively. There was no impairment of goodwill during the three and nine months ended September 30, 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 this amount. During the second quarter of 2017, the Company made a final adjustment of $475 thousand to deferred tax assets which increased goodwill by the same amount. 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 September 30, 2017 , goodwill related to the acquisition of Wilshire totaled $359.0 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 $565 thousand for the three months ended September 30, 2017 and 2016 , respectively. The amortization expense related to core deposit intangible assets totaled $2.0 million and $990 thousand for the nine months ended September 30, 2017 and 2016 , respectively. The following table provides information regarding the core deposit intangibles at September 30, 2017 : As of September 30, 2017 Core Deposit Intangibles Related To: Amortization Period Gross Carrying Amount Accumulated Amortization (Dollars in thousands) Center Financial acquisition 7 years $ 4,100 $ (3,896 ) PIB acquisition 7 years 603 (517 ) Foster acquisition 10 years 2,763 (1,563 ) Wilshire acquisition 10 years 18,138 (2,430 ) Total $ 25,604 $ (8,406 ) 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 market conditions and implicit discount rates used by market participants in evaluating servicing transactions , which in turn reflect the yields expected to be earned on those transactions. 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 September 30, 2017 and December 31, 2016 , the Company did not have a valuation allowance for servicing assets. The changes in servicing assets for the three and nine months ended September 30, 2017 and 2016 were as follows: Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 (Dollars in thousands) Balance at beginning of period $ 25,338 $ 12,193 $ 26,457 $ 12,000 Additions through originations of servicing assets 1,484 385 4,096 2,472 Additions through acquisition of Wilshire — 16,203 — 16,203 Amortization (1,743 ) (2,252 ) (5,474 ) (4,146 ) Balance at end of period $ 25,079 $ 26,529 $ 25,079 $ 26,529 Loans serviced for others are not reported as assets. The principal balances of loans serviced for other institutions were $1.48 billion as of September 30, 2017 and $1.55 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 September 30, 2017 and December 31, 2016 are presented below. September 30, 2017 December 31, 2016 SBA Servicing Assets: Weighted-average discount rate 10.35% 9.85% Constant prepayment rate 8.19% 8.05% Mortgage Servicing Assets: Weighted-average discount rate 9.50% 7.25% Constant prepayment rate 9.12% 13.77%

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes For the third quarter of 2017 , the Company had an income tax provision totaling $27.7 million on pretax income of $72.3 million , representing an effective tax rate of 38.34% , compared with an income tax provision of $17.2 million on pretax income of $43.3 million , representing an effective tax rate of 39.68% for the third quarter of 2016 . For the nine months ended September 30, 2017 , the Company had an income tax provision totaling $76.2 million on pretax income of $197.6 million , representing an effective tax rate of 38.54% , compared with an income tax provision of $50.2 million on pretax income of $123.3 million , representing an effective tax rate of 40.71% for the nine months ended September 30, 2016 . The reduction in effective tax rate for periods in 2017 compared to periods in 2016 was primarily due to the increase in affordable housing partnership investment tax credits for the three and nine months ended September 30, 2017 compared to the same periods in 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 and nine months ended September 30, 2017 and 2016 : Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 Statutory tax rate 35.00 % 35.00 % 35.00 % 35.00 % State taxes-net of federal tax effect 7.14 % 7.33 % 7.14 % 7.33 % Affordable housing partnership investment tax credit (3.15 )% (2.40 )% (3.15 )% (2.40 )% Bank owned life insurance (0.16 )% (0.22 )% (0.16 )% (0.22 )% Municipal securities (0.24 )% (0.21 )% (0.24 )% (0.21 )% Nondeductible transaction costs (0.02 )% 0.86 % (0.02 )% 0.86 % Other (0.23 )% (0.68 )% (0.03 )% 0.35 % Effective income tax rate 38.34 % 39.68 % 38.54 % 40.71 % 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 $2.1 million at September 30, 2017 and $2.2 million at December 31, 2016 , that relate to uncertainties associated with federal and state income tax matters. Other than the accrued interest of $67 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 $344 thousand and $306 thousand for accrued interest and penalties ( no portion was related to penalties) at September 30, 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 2013. 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 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 for the 2011, 2012, and 2013 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 September 30, 2017 .

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 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. The Company’s 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 September 30, 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: U.S. Government agency and U.S. Government sponsored enterprises: Debt securities $ 4,999 $ — $ 4,999 $ — Collateralized mortgage obligations: Residential 901,882 — 901,882 — Mortgage-backed securities: Residential 596,270 — 596,270 — Commercial 241,428 — 241,428 — Corporate securities 4,575 — 4,575 — Municipal securities 97,052 — 95,932 1,120 Mutual funds 22,103 22,103 — — Interest rate swaps (175 ) — (175 ) — Mortgage banking derivatives 84 — 84 — Liabilities: Interest rate swaps (175 ) — (175 ) — Mortgage banking derivatives 25 — 25 — 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: U.S. Government agency and U.S. Government sponsored enterprises: Debt securities $ 12,008 $ — $ 12,008 $ — Collateralized mortgage obligations: Residential 705,667 — 705,667 — Mortgage-backed securities: Residential 591,576 — 591,576 — Commercial 136,465 — 136,465 — 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 and nine months ended September 30, 2017 and 2016 . 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 and nine months ended September 30, 2017 and 2016 : Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 (Dollars in thousands) Beginning Balance $ 1,127 $ 1,234 $ 1,139 $ 1,166 Total (losses) gains included in other comprehensive income (7 ) (5 ) (19 ) 63 Ending Balance $ 1,120 $ 1,229 $ 1,120 $ 1,229 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, and 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 September 30, 2017 Quoted Prices Significant Significant (Dollars in thousands) Assets: Impaired loans at fair value: Real estate loans $ 5,447 $ — $ — $ 5,447 Commercial business 9,865 — — 9,865 OREO 10,077 — — 10,077 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 Consumer 253 — — 253 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 September 30, For the Nine Months Ended September 30, 2017 2016 2017 2016 (Dollars in thousands) Assets: Impaired loans at fair value: Real estate loans $ 142 $ (154 ) $ (2,293 ) $ 97 Commercial business 364 (3,108 ) (4,637 ) (5,956 ) Trade Finance 3 109 (1,236 ) 1,190 Consumer (206 ) (151 ) (701 ) (245 ) Loans held for sale, net 847 1,476 1,619 1,519 OREO (640 ) (162 ) (1,967 ) (1,408 ) Fair Value of Financial Instruments Carrying amounts and estimated fair values of financial instruments, not previously presented, at September 30, 2017 and December 31, 2016 were as follows: September 30, 2017 Carrying Estimated Fair Value Measurement Using (Dollars in thousands) Financial Assets: Cash and cash equivalents $ 405,296 $ 405,296 Level 1 Interest bearing deposits in other financial institutions and other investments 53,715 53,615 Level 2/3 Loans held for sale 11,425 11,964 Level 2 Loans receivable—net 10,879,341 10,985,397 Level 3 FHLB stock 28,426 N/A N/A Accrued interest receivable 29,145 29,145 Level 2/3 Servicing assets 25,079 28,152 Level 3 Customers’ liabilities on acceptances 1,433 1,433 Level 2 Financial Liabilities: Noninterest bearing deposits $ 3,049,998 $ 3,049,998 Level 2 Saving and other interest bearing demand deposits 3,929,015 3,929,015 Level 2 Time deposits 4,014,307 4,008,879 Level 2 FHLB advances 1,018,046 1,013,404 Level 2 Subordinated debentures 100,590 100,590 Level 2 Accrued interest payable 13,740 13,740 Level 2 Acceptances outstanding 1,433 1,433 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 Servicing assets 26,457 26,457 Level 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 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	9 Months Ended
	Sep. 30, 2017
Stockholders’ Equity and Regulatory Matters [Abstract]
Stockholders’ Equity	Stockholders’ Equity On July 29, 2016 the Company acquired Wilshire in an all-stock transaction. Pursuant to the merger agreement, Wilshire shareholders 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 September 30, 2017 was $1.93 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 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 September 30, 2017 , the U.S. Treasury Department held one remaining warrant for the purchase of 20,238 shares of the Company’s common stock. The Company paid a quarterly dividend of $0.13 per common share for the third quarter of 2017 compared to $0.11 per common share for the third quarter of 2016. For the nine months ended September 30, 2017 and 2016 , the Company paid total dividends of $0.37 and $0.33 , respectively. The following table presents the quarterly changes to accumulated other comprehensive (loss) income for the three and nine months ended September 30, 2017 and September 30, 2016 : Three Months Ended, September 30, 2017 September 30, 2016 (Dollars in thousands) Balance at beginning of period $ (10,089 ) $ 10,974 Unrealized loss on securities available for sale and interest only strips (211 ) (2,848 ) Reclassification adjustments for gains realized in income — (948 ) Less tax effect (89 ) (1,239 ) Total other comprehensive loss (122 ) (2,557 ) Balance at end of period $ (10,211 ) $ 8,417 Nine Months Ended, September 30, 2017 September 30, 2016 (Dollars in thousands) Balance at beginning of period $ (14,657 ) $ (1,832 ) Unrealized gains on securities available for sale and interest only strips 7,697 19,347 Reclassification adjustments for gains realized in income — (948 ) Less tax effect 3,251 8,150 Total other comprehensive income 4,446 10,249 Balance at end of period $ (10,211 ) $ 8,417 For the three and nine months ended September 30, 2017 there were no reclassifications out of accumulated other comprehensive loss income. For the three and nine months ended September 30, 2016 , reclassifications out of accumulated other comprehensive income (loss) totaled $948 thousand , consisting of net gains on the sales and calls of securities available for sale.

Regulatory Matters

Regulatory Matters	9 Months Ended
	Sep. 30, 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 September 30, 2017 , the capital conservation buffer for the Company stood at 1.25%. As of September 30, 2017 , the ratios for the Company and the Bank are sufficient to meet the fully phased-in conservation buffer. As of September 30, 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 generally 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 most recent notification from regulators that management believes has changed the institution’s category. As of September 30, 2017 and December 31, 2016 , the Company and the Bank met the capital adequacy requirements to which they are subject. The Company’s and the Bank’s capital amounts and ratios are presented in the table below for the dates indicated: Actual Required Minimum Capital Adequacy With Capital Conservation Buffer Required Amount Ratio Amount Ratio Amount Ratio Amount Ratio (Dollars in thousands) As of September 30, 2017 Common equity Tier 1 capital (to risk weighted assets): Company $ 1,467,385 12.29 % $ 537,100 4.50 % $ 686,295 5.75 % N/A N/A Bank $ 1,543,700 12.94 % $ 536,883 4.50 % $ 685,953 5.75 % $ 775,425 6.50 % Total capital (to risk-weighted assets): Company $ 1,648,543 13.81 % $ 954,845 8.00 % $ 1,104,039 9.25 % N/A N/A Bank $ 1,628,169 13.65 % $ 954,369 8.00 % $ 1,103,489 9.25 % $ 1,192,961 10.00 % Tier I capital (to risk-weighted assets): Company $ 1,564,074 13.10 % $ 716,134 6.00 % $ 865,328 7.25 % N/A N/A Bank $ 1,543,700 12.94 % $ 715,777 6.00 % $ 685,953 7.25 % $ 954,369 8.00 % Tier I capital (to average assets): Company $ 1,564,074 11.78 % $ 530,885 4.00 % N/A N/A N/A N/A Bank $ 1,543,700 11.63 % $ 530,807 4.00 % N/A N/A $ 663,508 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 5.125 % N/A N/A Bank $ 1,475,228 12.75 % $ 520,631 4.50 % $ 592,941 5.125 % $ 752,022 6.50 % Total capital (to risk-weighted assets): Company $ 1,578,690 13.64 % $ 926,076 8.00 % $ 998,425 8.625 % N/A N/A Bank $ 1,557,765 13.46 % $ 925,566 8.00 % $ 997,876 8.625 % $ 1,156,957 10.00 % Tier I capital (to risk-weighted assets): Company $ 1,496,153 12.92 % $ 694,557 6.00 % $ 766,906 6.625 % N/A N/A Bank $ 1,475,228 12.75 % $ 694,174 6.00 % $ 766,484 6.625 % $ 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)	9 Months Ended
	Sep. 30, 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 September 30, 2017 and December 31, 2016 and the results of operations for the three and nine months ended September 30, 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 a 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 2017-08, “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 its consolidated financial statements. In September 2017, the FASB issued ASU 2017-12, Derivatives and Hedging (Topic 815) , “ Targeted Improvements to Accounting for Hedging Activities”. ASU 2017-12 refines and expands hedge accounting for both financial (e.g., interest rate) and commodity risks. Its provisions create more transparency around how economic results are presented, both on the face of the financial statements and in the footnotes, for investors and analysts. The amendments also simplify the application of hedge accounting in certain situations. The new guidance eliminates the requirement to separately measure and report hedge ineffectiveness and generally requires the entire change in the fair value of a hedging instrument to be presented in the same income statement line as the hedged item. In addition, the guidance also eases certain documentation and assessment requirements and modifies the accounting for components excluded from the assessment of hedge effectiveness. ASU 2017-12 is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. Early adoption is permitted. The Company is currently in the process of evaluating the impact of ASU 2017-12 on its consolidated financial statements, but does not expect the adoption of ASU 2017-12 to have material impact on its consolidated financial statements.

Mergers and Acquisitions (Table

Mergers and Acquisitions (Tables)	9 Months Ended
	Sep. 30, 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 17,698 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 $ 497,262 Excess of consideration paid over fair value of net assets acquired (goodwill) $ 359,050
Acquisition Related Expenses	The following table presents merger-related expenses associated with the merger with Wilshire, the terminated merger with U & I, and other previous transactions which were reflected in the Consolidated Statements of Income in merger and integration expenses. These expenses are comprised primarily of salaries and employee benefits, professional fees, and other noninterest expenses related to mergers. Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 (Dollars in thousands) Wilshire $ 288 $ 11,198 $ 1,226 $ 13,890 U & I (52 ) — 471 — Other 24 24 72 72 Total merger and integration expenses $ 260 $ 11,222 $ 1,769 $ 13,962

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 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 nine months ended September 30, 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 1,603,876 $ 15.28 Granted — — Exercised (172,959 ) 7.19 Expired (268,070 ) 21.35 Forfeited (38,421 ) 17.17 Outstanding - September 30, 2017 1,124,426 $ 15.01 7.43 $ 3,035 Options exercisable - September 30, 2017 669,089 $ 13.71 6.62 $ 2,679
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 nine months ended September 30, 2017 : Number of Shares Weighted- Average Grant Date Fair Value Outstanding - January 1, 2017 398,658 $ 16.16 Granted 165,612 16.77 Vested (145,392 ) 16.16 Forfeited (21,332 ) 16.13 Outstanding - September 30, 2017 397,546 $ 16.41

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 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 and nine months ended September 30, 2017 and 2016 . Three Months Ended September 30, 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 $ 44,564 135,382,457 $ 0.33 $ 26,105 116,622,920 $ 0.22 Effect of dilutive securities: Stock options, restricted stock, and ESPP shares 248,455 328,154 Diluted EPS - common stock $ 44,564 135,630,912 $ 0.33 $ 26,105 116,951,074 $ 0.22 Nine Months Ended September 30, 2017 2016 Net Income (Numerator) Weighted-Average Shares Per Share (Amount) Net Income (Numerator) Weighted-Average Shares Per Share (Amount) (In thousands, except share and per share data) Basic EPS - common stock $ 121,461 135,296,332 $ 0.90 $ 73,117 91,940,070 $ 0.80 Effect of dilutive securities: Stock options, restricted stock, and ESPP shares 365,633 326,175 Diluted EPS - common stock $ 121,461 135,661,965 $ 0.90 $ 73,117 92,266,245 $ 0.79

Securities Available for Sale (

Securities Available for Sale (Tables)	9 Months Ended
	Sep. 30, 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 September 30, 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 $ 5,000 $ — $ (1 ) $ 4,999 Collateralized mortgage obligations: Residential 911,229 332 (9,679 ) 901,882 Mortgage-backed securities: Residential 600,155 1,566 (5,451 ) 596,270 Commercial 245,972 128 (4,672 ) 241,428 Corporate securities 4,571 4 — 4,575 Municipal securities 96,785 1,063 (796 ) 97,052 Total debt securities 1,863,712 3,093 (20,599 ) 1,846,206 Mutual funds 22,425 27 (349 ) 22,103 Total investment securities available for sale $ 1,886,137 $ 3,120 $ (20,948 ) $ 1,868,309 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 599,755 1,132 (9,311 ) 591,576 Commercial 141,549 — (5,084 ) 136,465 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 September 30, 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 $ 5,724 $ 5,726 Due after one year through five years 11,567 11,875 Due after five years through ten years 39,563 40,060 Due after ten years 49,502 48,965 U.S. Government agency and U.S. Government sponsored enterprises Collateralized mortgage obligations: Residential 911,229 901,882 Mortgage-backed securities: Residential 600,155 596,270 Commercial 245,972 241,428 Mutual funds 22,425 22,103 Total $ 1,886,137 $ 1,868,309
Schedule of Unrealized Loss on Investments	The following tables show the Company’s 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 September 30, 2017 Less than 12 months 12 months or longer Total Description of Securities Number Fair Value Gross Unrealized Losses Number Fair Value Gross Unrealized Losses Number of Fair Value Gross Unrealized Losses (Dollars in thousands) Debt securities* 1 $ 4,999 $ (1 ) — $ — $ — 1 $ 4,999 $ (1 ) Collateralized mortgage obligations: Residential* 56 566,997 (4,406 ) 26 228,250 (5,273 ) 82 795,247 (9,679 ) Mortgage-backed securities: Residential* 27 291,483 (1,922 ) 13 116,490 (3,529 ) 40 407,973 (5,451 ) Commercial* 8 86,608 (804 ) 6 106,790 (3,868 ) 14 193,398 (4,672 ) Municipal securities 14 13,521 (221 ) 6 17,735 (575 ) 20 31,256 (796 ) Mutual funds 3 15,607 (108 ) 1 5,007 (241 ) 4 20,614 (349 ) Total 109 $ 979,215 $ (7,462 ) 52 $ 474,272 $ (13,486 ) 161 $ 1,453,487 $ (20,948 ) __________________________________ * 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 Fair Value Gross Unrealized Losses Number 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* 48 486,332 (9,311 ) — — — 48 486,332 (9,311 ) Commercial* 9 136,465 (5,084 ) — — — 9 136,465 (5,084 ) 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)	9 Months Ended
	Sep. 30, 2017
Receivables [Abstract]
Summary of Loans Receivable by Major Category	The following is a summary of loans receivable by major category: September 30, 2017 December 31, 2016 (Dollars in thousands) Loan portfolio composition Real estate loans: Residential $ 55,072 $ 57,884 Commercial 8,085,307 7,842,573 Construction 297,686 254,113 Total real estate loans 8,438,065 8,154,570 Commercial business 1,824,442 1,832,021 Trade finance 180,847 154,928 Consumer and other 521,459 403,470 Total loans outstanding 10,964,813 10,544,989 Deferred loan fees, net (1,839 ) (1,657 ) Loans receivable 10,962,974 10,543,332 Allowance for loan losses (83,633 ) (79,343 ) Loans receivable, net of allowance for loan losses $ 10,879,341 $ 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 and nine months ended September 30, 2017 and 2016 : Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 (Dollars in thousands) Balance at beginning of period $ 53,657 $ 20,150 $ 43,611 $ 23,777 Additions due to acquisitions during the period — 41,271 — 41,271 Accretion (5,815 ) (4,723 ) (16,375 ) (10,226 ) Reclassification from nonaccretable difference 6,696 40 27,302 1,916 Balance at end of period $ 54,538 $ 56,738 $ 54,538 $ 56,738
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 and nine months ended September 30, 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 September 30, 2017 Balance, beginning of period $ 40,478 $ 21,495 $ 1,000 $ 2,282 $ 13,411 $ 1,291 $ 106 $ 11 $ 80,074 Provision (credit) for loan losses 3,664 1,499 418 664 (1,312 ) 395 56 16 5,400 Loans charged off (175 ) (3,870 ) — (218 ) (162 ) (471 ) — (17 ) (4,913 ) Recoveries of charge offs 23 3,020 2 — — 25 — 2 3,072 Balance, end of period $ 43,990 $ 22,144 $ 1,420 $ 2,728 $ 11,937 $ 1,240 $ 162 $ 12 $ 83,633 Nine Months Ended September 30, 2017 Balance, beginning of period $ 38,956 $ 23,430 $ 1,897 $ 2,116 $ 12,791 $ 117 $ — $ 36 $ 79,343 Provision (credit) for loan losses 7,174 2,356 1,621 1,348 (406 ) 1,517 162 (12 ) 13,760 Loans charged off (2,221 ) (7,485 ) (2,104 ) (738 ) (479 ) (596 ) — (17 ) (13,640 ) Recoveries of charge offs 81 3,843 6 2 31 202 — 5 4,170 Balance, end of period $ 43,990 $ 22,144 $ 1,420 $ 2,728 $ 11,937 $ 1,240 $ 162 $ 12 $ 83,633 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 September 30, 2016 Balance, beginning of period $ 43,666 $ 16,576 $ 2,449 $ 926 $ 12,607 $ 148 $ — $ 53 $ 76,425 Provision (credit) for loan losses (2,474 ) 7,444 (32 ) 970 527 72 — (7 ) 6,500 Loans charged off (132 ) (3,219 ) — (162 ) (435 ) (10 ) — — (3,958 ) Recoveries of charge offs 432 539 — 2 8 27 — 1 1,009 Balance, end of period $ 41,492 $ 21,340 $ 2,417 $ 1,736 $ 12,707 $ 237 $ — $ 47 $ 79,976 Nine Months Ended September 30, 2016 Balance, beginning of period $ 42,829 $ 16,332 $ 3,592 $ 556 $ 12,823 $ 214 $ — $ 62 $ 76,408 Provision (credit) for loan losses (2,318 ) 9,792 (1,175 ) 1,370 633 (82 ) — (20 ) 8,200 Loans charged off (151 ) (5,845 ) — (278 ) (758 ) (43 ) — — (7,075 ) Recoveries of charge offs 1,132 1,061 — 88 9 148 — 5 2,443 Balance, end of period $ 41,492 $ 21,340 $ 2,417 $ 1,736 $ 12,707 $ 237 $ — $ 47 $ 79,976 The following tables break out the allowance for loan losses and the recorded investment of loans outstanding (not including accrued interest receivables and net deferred loan fees) by individually impaired, general valuation, and PCI impairment, by portfolio segment, at September 30, 2017 and December 31, 2016 : September 30, 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 $ 1,462 $ 4,679 $ 2 $ 4 $ 245 $ 415 $ — $ — $ 6,807 Collectively evaluated for impairment 42,528 17,465 1,418 2,724 1,081 825 162 12 66,215 PCI loans — — — — 10,611 — — — 10,611 Total $ 43,990 $ 22,144 $ 1,420 $ 2,728 $ 11,937 $ 1,240 $ 162 $ 12 $ 83,633 Loans outstanding: Individually evaluated for impairment $ 48,535 $ 35,494 $ 4,201 $ 1,048 $ 10,155 $ 4,885 $ 3,384 $ 758 $ 108,460 Collectively evaluated for impairment 5,996,526 1,437,398 133,599 339,980 2,213,662 317,150 39,663 168,844 10,646,822 PCI loans — — — — 169,187 29,515 — 10,829 209,531 Total $ 6,045,061 $ 1,472,892 $ 137,800 $ 341,028 $ 2,393,004 $ 351,550 $ 43,047 $ 180,431 $ 10,964,813 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 and the total impaired loans net of specific allowance is presented in the following table: September 30, 2017 December 31, 2016 (Dollars in thousands) With allocated specific allowance Without charge off $ 40,218 $ 59,638 With charge off 879 1,120 With no allocated specific allowance Without charge off 60,129 76,775 With charge off 7,234 2,828 Specific allowance on impaired loans (6,807 ) (7,409 ) Impaired loans, net of specific allowance $ 101,653 $ 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 September 30, 2017 and December 31, 2016 , and the average recorded investment and interest income recognized for the three and nine months ended September 30, 2017 and 2016 . Loans with no related allowance are believed by management to be adequately collateralized. As of September 30, 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 931 936 132 2,095 2,384 90 Hotel & motel 2,696 3,667 263 6,387 6,387 337 Gas station & car wash — — — 215 228 41 Mixed use 169 727 7 206 732 27 Industrial & warehouse 988 1,670 135 530 530 — Other 4,389 4,389 1,170 22,580 22,825 1,507 Real estate—construction — — — — — — Commercial business 27,292 28,713 5,094 26,543 27,161 4,493 Trade finance 4,201 4,201 2 2,111 2,156 864 Consumer and other 431 431 4 91 91 50 Subtotal $ 41,097 $ 44,734 $ 6,807 $ 60,758 $ 62,494 $ 7,409 With no related allowance: Real estate—residential $ 498 $ 1,488 $ — $ 3,562 $ 3,562 $ — Real estate—commercial Retail 10,467 12,210 — 12,753 13,290 — Hotel & motel 8,172 12,262 — 6,122 11,735 — Gas station & car wash 2,939 6,646 — 5,043 7,449 — Mixed use 1,319 3,732 — 7,303 7,822 — Industrial & warehouse 8,054 8,140 — 9,673 9,748 — Other 16,768 18,278 — 20,181 21,492 — Real estate—construction 1,300 1,441 — 1,300 1,441 — Commercial business 13,087 17,917 — 8,675 9,472 — Trade finance 3,384 5,067 — 3,918 3,918 — Consumer and other 1,375 1,453 — 1,073 1,136 — Subtotal $ 67,363 $ 88,634 $ — $ 79,603 $ 91,065 $ — Total $ 108,460 $ 133,368 $ 6,807 $ 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 September 30, For the Nine Months Ended September 30, 2017 2016 2017 2016 Total Impaired Loans Average Recorded Investment* Interest Income Recognized during Impairment Average Recorded Investment* Interest Income Recognized during Impairment 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 1,197 4 1,711 — 1,268 11 1,711 — Hotel & motel 2,269 17 1,320 16 4,330 49 2,965 48 Gas station & car wash — — 1,052 9 54 — 1,051 28 Mixed use 228 2 208 2 228 5 386 5 Industrial & warehouse 746 — 542 6 1,226 — 551 18 Other 4,572 60 23,474 259 13,534 175 23,968 776 Real estate—construction — — — — — — — — Commercial business 27,031 261 32,553 296 25,036 749 34,147 821 Trade finance 4,118 58 6,465 70 2,587 215 8,390 237 Consumer and other 251 1 548 1 169 3 338 2 Subtotal $ 40,412 $ 403 $ 67,873 $ 659 $ 48,432 $ 1,207 $ 73,507 $ 1,935 With no related allowance: Real estate—residential $ 249 $ 20 $ — $ — $ 1,381 $ 57 $ — $ — Real estate—commercial Retail 10,071 91 9,381 95 12,412 263 10,243 296 Hotel & motel 10,494 59 9,776 54 8,346 175 8,813 163 Gas station & car wash 3,022 114 4,855 25 3,812 317 4,760 75 Mixed use 1,274 109 2,195 9 4,095 324 2,279 28 Industrial & warehouse 8,390 68 10,905 89 8,738 191 10,396 268 Other 14,733 6 9,912 59 16,324 19 11,312 177 Real estate—construction 1,300 — 1,300 — 1,689 — 1,328 — Commercial business 11,544 — 13,111 26 10,417 — 11,030 79 Trade finance 1,765 — 2,225 — 2,975 — 1,113 — Consumer and other 1,305 — 800 7 1,147 — 1,014 23 Subtotal $ 64,147 $ 467 $ 64,460 $ 364 $ 71,336 $ 1,346 $ 62,288 $ 1,109 Total $ 104,559 $ 870 $ 132,333 $ 1,023 $ 119,768 $ 2,553 $ 135,795 $ 3,044 __________________________________ * Unpaid contractual principal balance less charge offs, interest collected applied to principal if on nonaccrual and purchase discounts. As of September 30, 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 661 666 127 1,826 2,114 85 Hotel & motel 87 87 2 — — — Gas station & car wash — — — — — — Mixed use 131 131 6 136 136 2 Industrial & warehouse 402 1,084 100 — — — Other 279 279 10 337 341 26 Real estate—construction — — — — — — Commercial business 1,787 2,919 415 294 339 73 Trade finance — — — — — — Consumer and other — — — — — — Subtotal $ 3,347 $ 5,166 $ 660 $ 2,593 $ 2,930 $ 186 With no related allowance: Real estate—residential $ 498 $ 1,488 $ — $ 679 $ 679 $ — Real estate—commercial Retail 1,962 2,279 — 3,148 3,214 — Hotel & motel 536 2,388 — 4,767 7,171 — Gas station & car wash 448 2,146 — 1,568 1,815 — Mixed use 162 2,240 — 5,315 5,551 — Industrial & warehouse 55 55 — 66 66 — Other 4,934 5,800 — 6,023 6,752 — Real estate—construction — — — — — — Commercial business 3,098 3,453 — 141 386 — Trade finance 3,384 5,067 — — — — Consumer and other 758 826 — 431 484 — Subtotal $ 15,835 $ 25,742 $ — $ 22,138 $ 26,118 $ — Total $ 19,182 $ 30,908 $ 660 $ 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 September 30, For the Nine Months Ended September 30, 2017 2016 2017 2016 Impaired Acquired Loans Average Recorded Investment* Interest Income Recognized during Impairment Average Recorded Investment* Interest Income Recognized during Impairment 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 927 4 1,386 — 998 11 1,277 — Hotel & motel 174 — — — 110 — — — Gas station & car wash — — — — — — 254 — Mixed use 190 2 139 2 191 5 316 5 Industrial & warehouse 452 — — — 226 — — — Other 303 4 344 4 319 11 324 13 Real estate—construction — — — — — — — — Commercial business 1,250 9 396 — 892 24 486 — Trade finance — — — — — — — — Consumer and other — — 80 — — — 40 — Subtotal $ 3,296 $ 19 $ 2,345 $ 6 $ 2,736 $ 51 $ 2,697 $ 18 With no related allowance: Real estate—residential $ 249 $ 20 $ — $ — $ 294 $ 57 $ — $ — Real estate—commercial Retail 1,709 15 2,095 21 2,729 45 2,333 72 Hotel & motel 2,671 — 4,983 3 3,737 — 5,933 10 Gas station & car wash 454 — 1,589 25 774 — 1,490 75 Mixed use 104 — 166 — 2,701 — 219 — Industrial & warehouse 60 1 1,038 2 63 2 1,075 7 Other 3,806 46 3,215 13 4,205 116 3,520 39 Real estate—construction — — — — — — — — Commercial business 1,835 47 707 4 1,014 142 690 13 Trade finance 1,692 68 — — 846 191 — — Consumer and other 684 2 361 2 518 6 459 7 Subtotal $ 13,264 $ 199 $ 14,154 $ 70 $ 16,881 $ 559 $ 15,719 $ 223 Total $ 16,560 $ 218 $ 16,499 $ 76 $ 19,617 $ 610 $ 18,416 $ 241
Aging of Past Due Loans	The following tables present the recorded investment in past due loans by the number of days past due as of September 30, 2017 and December 31, 2016 by class of loans: As of September 30, 2017 Nonaccrual Loans (2) Total Delinquent and Nonaccrual Loans Past Due and Accruing 30-59 Days 60-89 Days 90 or More Days Total (Dollars in thousands) Legacy Loans: Real estate—residential $ — $ — $ — $ — $ — $ — Real estate—commercial Retail 1,168 — — 1,168 3,259 4,427 Hotel & motel 329 1,895 — 2,224 8,966 11,190 Gas station & car wash 1,755 — — 1,755 2,490 4,245 Mixed use 161 — — 161 1,196 1,357 Industrial & warehouse 1,123 — — 1,123 3,456 4,579 Other 1,418 — — 1,418 6,332 7,750 Real estate—construction — — — — 1,300 1,300 Commercial business 2,660 960 150 3,770 9,485 13,255 Trade finance — — — — — — Consumer and other 243 717 257 1,217 594 1,811 Subtotal $ 8,857 $ 3,572 $ 407 $ 12,836 $ 37,078 $ 49,914 Acquired Loans: (1) Real estate—residential $ — $ — $ — $ — $ — $ — Real estate—commercial Retail 128 — — 128 1,005 1,133 Hotel & motel — 1,521 — 1,521 621 2,142 Gas station & car wash — — — — 448 448 Mixed use — — — — 161 161 Industrial & warehouse 338 — — 338 402 740 Other 336 — — 336 1,818 2,154 Real estate—construction — — — — — — Commercial business 627 166 — 793 1,196 1,989 Trade finance — — — — — — Consumer and other — — — — 594 594 Subtotal $ 1,429 $ 1,687 $ — $ 3,116 $ 6,245 $ 9,361 TOTAL $ 10,286 $ 5,259 $ 407 $ 15,952 $ 43,323 $ 59,275 __________________________________ (1) Acquired Loans exclude PCI loans. (2) Nonaccrual loans exclude guaranteed portion of delinquent SBA loans that are in liquidation totaling $21.5 million . Includes nonaccrual loans less than 30 days past due totaling $9.1 million . As of December 31, 2016 Nonaccrual Loans (2) Total Delinquent and Nonaccrual Loans Past Due and Accruing 30-59 Days 60-89 Days 90 or More Days Total (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 .
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 September 30, 2017 and December 31, 2016 by class of loans: As of September 30, 2017 Pass/ Not Rated Special Mention Substandard Doubtful Total (Dollars in thousands) Legacy Loans: Real estate—residential $ 36,488 $ 1,035 $ 1,447 $ — $ 38,970 Real estate—commercial Retail 1,569,248 23,225 19,348 — 1,611,821 Hotel & motel 1,194,329 10,042 13,128 — 1,217,499 Gas station & car wash 729,531 12,382 4,246 — 746,159 Mixed use 400,074 4,612 1,544 — 406,230 Industrial & warehouse 568,172 15,999 22,032 — 606,203 Other 1,125,919 29,111 50,047 — 1,205,077 Real estate—construction 210,134 — 2,968 — 213,102 Commercial business 1,358,444 33,068 81,164 216 1,472,892 Trade finance 134,262 2,311 1,227 — 137,800 Consumer and other 340,187 — 841 — 341,028 Subtotal $ 7,666,788 $ 131,785 $ 197,992 $ 216 $ 7,996,781 Acquired Loans: Real estate—residential $ 15,837 $ 265 $ — $ — $ 16,102 Real estate—commercial Retail 649,572 8,974 21,643 — 680,189 Hotel & motel 285,539 9,289 20,423 2 315,253 Gas station & car wash 198,481 8,973 8,828 — 216,282 Mixed use 99,250 5,648 14,317 8 119,223 Industrial & warehouse 266,876 15,185 15,908 270 298,239 Other 600,411 36,607 26,114 — 663,132 Real estate—construction 84,584 — — — 84,584 Commercial business 310,220 7,782 33,528 20 351,550 Trade finance 39,663 — 3,384 — 43,047 Consumer and other 174,254 720 4,470 987 180,431 Subtotal $ 2,724,687 $ 93,443 $ 148,615 $ 1,287 $ 2,968,032 Total $ 10,391,475 $ 225,228 $ 346,607 $ 1,503 $ 10,964,813 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 September 30, Nine Months Ended September 30, 2017 2016 2017 2016 Transfer of loans receivable to held for sale (Dollars in thousands) Real estate - commercial $ — $ 992 $ 429 $ 992 Consumer — — — 400 Total $ — $ 992 $ 429 $ 1,392
Allowance for Loan Losses and Impaired Loans, Qualitative and Quantitative Analysis	The following table presents breakdown of loans by impairment method at September 30, 2017 and December 31, 2016 : As of September 30, 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) $ 498 $ 56,892 $ 1,300 $ 40,379 $ 7,585 $ 1,806 $ 108,460 Specific allowance $ — $ 1,707 $ — $ 5,094 $ 2 $ 4 $ 6,807 Specific allowance to impaired loans N/A 3.00 % N/A 12.62 % 0.03 % 0.22 % 6.28 % Other loans $ 54,574 $ 8,028,415 $ 296,386 $ 1,784,063 $ 173,262 $ 519,653 $ 10,856,353 General allowance $ 161 $ 52,573 $ 1,486 $ 18,290 $ 1,580 $ 2,736 $ 76,826 General allowance to other loans 0.30 % 0.65 % 0.50 % 1.03 % 0.91 % 0.53 % 0.71 % Total loans $ 55,072 $ 8,085,307 $ 297,686 $ 1,824,442 $ 180,847 $ 521,459 $ 10,964,813 Total allowance for loan losses $ 161 $ 54,280 $ 1,486 $ 23,384 $ 1,582 $ 2,740 $ 83,633 Total allowance to total loans 0.29 % 0.67 % 0.50 % 1.28 % 0.87 % 0.53 % 0.76 % 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 Specific allowance to impaired loans 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 General allowance to other loans 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 Total allowance to total loans 0.36 % 0.64 % 0.64 % 1.29 % 1.22 % 0.53 % 0.75 %
Troubled Debt Restructurings	A summary of the recorded investment of TDRs on accrual and nonaccrual status by type of concession as of September 30, 2017 and December 31, 2016 is presented below: As of September 30, 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 $ 18,014 $ 434 $ — $ 18,448 $ 1,817 $ 150 $ — $ 1,967 $ 20,415 Maturity / amortization concession 3,397 25,187 8,203 36,787 2,084 5,394 323 7,801 44,588 Rate concession 5,497 4,075 — 9,572 1,109 20 — 1,129 10,701 Total $ 26,908 $ 29,696 $ 8,203 $ 64,807 $ 5,010 $ 5,564 $ 323 $ 10,897 $ 75,704 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 The following table presents the recorded investment of loans classified as TDR within the three and nine months ended September 30, 2017 and September 30, 2016 by class of loans: Three Months Ended September 30, 2017 Three Months Ended September 30, 2016 Number of Loans Pre- Modification Post- Modification Number of Loans Pre- Modification Post- Modification (Dollars in thousands) Legacy Loans: Real estate—residential — $ — $ — — $ — $ — Real estate—commercial Retail 1 464 452 — — — Hotel & motel — — — — — — Gas station & car wash — — — — — — Mixed use — — — — — — Industrial & warehouse — — — — — — Other — — — 1 845 836 Real estate - construction — — — — — — Commercial business 7 5,409 4,753 4 265 314 Trade finance — — — — — — Consumer and other — — — — — — Subtotal 8 $ 5,873 $ 5,205 5 $ 1,110 $ 1,150 Acquired Loans: Real estate—residential 1 $ 614 $ 498 — $ — $ — Real estate—commercial Retail — — — 1 1,377 1,344 Hotel & motel — — — — — — Gas station & car wash — — — — — — Mixed use — — — — — — Industrial & warehouse — — — — — — Other 1 851 2,265 1 81 79 Real estate—construction — — — — — — Commercial business 5 4,478 3,535 2 31 27 Trade finance 1 2,938 3,384 — — — Consumer and other — — — — — — Subtotal 8 $ 8,881 $ 9,682 4 $ 1,489 $ 1,450 Total 16 $ 14,754 $ 14,887 9 $ 2,599 $ 2,600
Summary of Troubled Debt Restructurings with Subsequent Payment Default	The following table presents loans modified as TDRs within the previous twelve months ended September 30, 2017 and September 30, 2016 that subsequently had payment defaults during the three and nine months ended September 30, 2017 and September 30, 2016 : Three Months Ended September 30, 2017 Three Months Ended September 30, 2016 Number of Loans Balance Number of Loans Balance (Dollars in thousands) Legacy Loans: Real estate—commercial Retail — $ — — $ — Hotel & motel — — — — Gas station & car wash — — — — Mixed Use — — — — Industrial & warehouse — — — — Other — — — — Real estate—construction — — — — Commercial business 2 827 6 4,296 Trade finance — — — — Consumer and other — — — — Subtotal 2 $ 827 6 $ 4,296 Acquired Loans: Real estate—commercial Retail — $ — — $ — Hotel & motel — — — — Gas station & car wash — — — — Mixed Use — — — — Industrial & warehouse — — — — Other — — — — Real estate—construction — — — — Commercial business — — — — Trade finance — — — — Consumer and other — — 1 26 Subtotal — $ — 1 $ 26 Total 2 $ 827 7 $ 4,322

Borrowings (Tables)

Borrowings (Tables)	9 Months Ended
	Sep. 30, 2017
Debt Disclosure [Abstract]
Contractual Maturities for FHLB-SF Borrowings	At September 30, 2017 , the contractual maturities for FHLB advances were as follows: Contractual Maturity/ (Dollars in thousands) Due within one year $ 480,000 $ 480,000 Due after one year through five years 538,046 538,046 Total $ 1,018,046 $ 1,018,046

Subordinated Debentures (Tables

Subordinated Debentures (Tables)	9 Months Ended
	Sep. 30, 2017
Subordinated Borrowings [Abstract]
Summary of Trust Preferred Securities and Debentures	The following table is a summary of trust preferred securities and Debentures at September 30, 2017 : Issuance Trust Issuance Date Trust Preferred Security Amount Carrying Rate Type Current Rate Maturity Date (Dollars in thousands) Nara Capital Trust III 06/05/2003 $ 5,000 $ 5,155 Variable 4.47% 06/15/2033 Nara Statutory Trust IV 12/22/2003 5,000 5,155 Variable 4.15% 01/07/2034 Nara Statutory Trust V 12/17/2003 10,000 10,310 Variable 4.27% 12/17/2033 Nara Statutory Trust VI 03/22/2007 8,000 8,248 Variable 2.97% 06/15/2037 Center Capital Trust I 12/30/2003 18,000 13,778 Variable 4.15% 01/07/2034 Wilshire Statutory Trust II 03/17/2005 20,000 15,262 Variable 3.11% 03/17/2035 Wilshire Statutory Trust III 09/15/2005 15,000 10,723 Variable 2.72% 09/15/2035 Wilshire Statutory Trust IV 07/10/2007 25,000 17,411 Variable 2.70% 09/15/2037 Saehan Capital Trust I 03/30/2007 20,000 14,548 Variable 2.96% 06/30/2037 Total $ 126,000 $ 100,590

Derivative Financial Instrume32

Derivative Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 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 September 30, 2017 and December 31, 2016 , the following interest rate swaps related to the Company’s loan hedging program were outstanding: As of September 30, 2017 As of December 31, 2016 (Dollars in thousands) Interest rate swaps on loans with loan customers: Notional amount $ 279,786 $ 223,098 Weighted average remaining term 7.5 years 7.4 years Received fixed rate (weighted average) 4.35 % 4.29 % Pay variable rate (weighted average) 3.59 % 3.06 % Estimated fair value $ (175 ) $ (1,565 ) Back to back interest rate swaps with correspondent banks: Notional amount $ 279,786 $ 223,098 Weighted average remaining term 7.5 years 7.4 years Received variable rate (weighted average) 3.59 % 3.06 % Pay fixed rate (weighted average) 4.35 % 4.29 % Estimated fair value $ 175 $ 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 September 30, 2017 As of December 31, 2016 Notional Amount Fair Value Notional Amount Fair Value (Dollars in thousands) Assets: Interest rate lock commitments $ 10,734 $ 60 $ 11,168 $ 130 Forward sale contracts related to mortgage banking $ 6,966 $ 24 $ 3,223 $ 17 Liabilities: Interest rate lock commitments $ 777 $ 2 $ 1,810 $ 3 Forward sale contracts related to mortgage banking $ 4,545 $ 23 $ 9,755 $ 38

Goodwill, Intangible Assets, 33

Goodwill, Intangible Assets, and Servicing Assets (Tables)	9 Months Ended
	Sep. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Finite-Lived Intangible Assets	The following table provides information regarding the core deposit intangibles at September 30, 2017 : As of September 30, 2017 Core Deposit Intangibles Related To: Amortization Period Gross Carrying Amount Accumulated Amortization (Dollars in thousands) Center Financial acquisition 7 years $ 4,100 $ (3,896 ) PIB acquisition 7 years 603 (517 ) Foster acquisition 10 years 2,763 (1,563 ) Wilshire acquisition 10 years 18,138 (2,430 ) Total $ 25,604 $ (8,406 )
Schedule of Servicing Assets	The changes in servicing assets for the three and nine months ended September 30, 2017 and 2016 were as follows: Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 (Dollars in thousands) Balance at beginning of period $ 25,338 $ 12,193 $ 26,457 $ 12,000 Additions through originations of servicing assets 1,484 385 4,096 2,472 Additions through acquisition of Wilshire — 16,203 — 16,203 Amortization (1,743 ) (2,252 ) (5,474 ) (4,146 ) Balance at end of period $ 25,079 $ 26,529 $ 25,079 $ 26,529
Summary of Fair Value Inputs	The inputs used in determining the impairment of the servicing assets at September 30, 2017 and December 31, 2016 are presented below. September 30, 2017 December 31, 2016 SBA Servicing Assets: Weighted-average discount rate 10.35% 9.85% Constant prepayment rate 8.19% 8.05% Mortgage Servicing Assets: Weighted-average discount rate 9.50% 7.25% Constant prepayment rate 9.12% 13.77%

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 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 September 30, 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: U.S. Government agency and U.S. Government sponsored enterprises: Debt securities $ 4,999 $ — $ 4,999 $ — Collateralized mortgage obligations: Residential 901,882 — 901,882 — Mortgage-backed securities: Residential 596,270 — 596,270 — Commercial 241,428 — 241,428 — Corporate securities 4,575 — 4,575 — Municipal securities 97,052 — 95,932 1,120 Mutual funds 22,103 22,103 — — Interest rate swaps (175 ) — (175 ) — Mortgage banking derivatives 84 — 84 — Liabilities: Interest rate swaps (175 ) — (175 ) — Mortgage banking derivatives 25 — 25 — 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: U.S. Government agency and U.S. Government sponsored enterprises: Debt securities $ 12,008 $ — $ 12,008 $ — Collateralized mortgage obligations: Residential 705,667 — 705,667 — Mortgage-backed securities: Residential 591,576 — 591,576 — Commercial 136,465 — 136,465 — 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 September 30, 2017 As of December 31, 2016 Notional Amount Fair Value Notional Amount Fair Value (Dollars in thousands) Assets: Interest rate lock commitments $ 10,734 $ 60 $ 11,168 $ 130 Forward sale contracts related to mortgage banking $ 6,966 $ 24 $ 3,223 $ 17 Liabilities: Interest rate lock commitments $ 777 $ 2 $ 1,810 $ 3 Forward sale contracts related to mortgage banking $ 4,545 $ 23 $ 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 and nine months ended September 30, 2017 and 2016 : Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 (Dollars in thousands) Beginning Balance $ 1,127 $ 1,234 $ 1,139 $ 1,166 Total (losses) gains included in other comprehensive income (7 ) (5 ) (19 ) 63 Ending Balance $ 1,120 $ 1,229 $ 1,120 $ 1,229
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 September 30, 2017 Quoted Prices Significant Significant (Dollars in thousands) Assets: Impaired loans at fair value: Real estate loans $ 5,447 $ — $ — $ 5,447 Commercial business 9,865 — — 9,865 OREO 10,077 — — 10,077 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 Consumer 253 — — 253 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 September 30, For the Nine Months Ended September 30, 2017 2016 2017 2016 (Dollars in thousands) Assets: Impaired loans at fair value: Real estate loans $ 142 $ (154 ) $ (2,293 ) $ 97 Commercial business 364 (3,108 ) (4,637 ) (5,956 ) Trade Finance 3 109 (1,236 ) 1,190 Consumer (206 ) (151 ) (701 ) (245 ) Loans held for sale, net 847 1,476 1,619 1,519 OREO (640 ) (162 ) (1,967 ) (1,408 )
Carrying Amounts and Estimated Fair Values of Financial Instruments	Carrying amounts and estimated fair values of financial instruments, not previously presented, at September 30, 2017 and December 31, 2016 were as follows: September 30, 2017 Carrying Estimated Fair Value Measurement Using (Dollars in thousands) Financial Assets: Cash and cash equivalents $ 405,296 $ 405,296 Level 1 Interest bearing deposits in other financial institutions and other investments 53,715 53,615 Level 2/3 Loans held for sale 11,425 11,964 Level 2 Loans receivable—net 10,879,341 10,985,397 Level 3 FHLB stock 28,426 N/A N/A Accrued interest receivable 29,145 29,145 Level 2/3 Servicing assets 25,079 28,152 Level 3 Customers’ liabilities on acceptances 1,433 1,433 Level 2 Financial Liabilities: Noninterest bearing deposits $ 3,049,998 $ 3,049,998 Level 2 Saving and other interest bearing demand deposits 3,929,015 3,929,015 Level 2 Time deposits 4,014,307 4,008,879 Level 2 FHLB advances 1,018,046 1,013,404 Level 2 Subordinated debentures 100,590 100,590 Level 2 Accrued interest payable 13,740 13,740 Level 2 Acceptances outstanding 1,433 1,433 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 Servicing assets 26,457 26,457 Level 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 Acceptances outstanding 2,899 2,899 Level 2

Stockholders_ Equity (Tables)

Stockholders’ Equity (Tables)	9 Months Ended
	Sep. 30, 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 and nine months ended September 30, 2017 and September 30, 2016 : Three Months Ended, September 30, 2017 September 30, 2016 (Dollars in thousands) Balance at beginning of period $ (10,089 ) $ 10,974 Unrealized loss on securities available for sale and interest only strips (211 ) (2,848 ) Reclassification adjustments for gains realized in income — (948 ) Less tax effect (89 ) (1,239 ) Total other comprehensive loss (122 ) (2,557 ) Balance at end of period $ (10,211 ) $ 8,417 Nine Months Ended, September 30, 2017 September 30, 2016 (Dollars in thousands) Balance at beginning of period $ (14,657 ) $ (1,832 ) Unrealized gains on securities available for sale and interest only strips 7,697 19,347 Reclassification adjustments for gains realized in income — (948 ) Less tax effect 3,251 8,150 Total other comprehensive income 4,446 10,249 Balance at end of period $ (10,211 ) $ 8,417

Regulatory Matters (Tables)

Regulatory Matters (Tables)	9 Months Ended
	Sep. 30, 2017
Banking and Thrift [Abstract]
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations	Actual Required Minimum Capital Adequacy With Capital Conservation Buffer Required Amount Ratio Amount Ratio Amount Ratio Amount Ratio (Dollars in thousands) As of September 30, 2017 Common equity Tier 1 capital (to risk weighted assets): Company $ 1,467,385 12.29 % $ 537,100 4.50 % $ 686,295 5.75 % N/A N/A Bank $ 1,543,700 12.94 % $ 536,883 4.50 % $ 685,953 5.75 % $ 775,425 6.50 % Total capital (to risk-weighted assets): Company $ 1,648,543 13.81 % $ 954,845 8.00 % $ 1,104,039 9.25 % N/A N/A Bank $ 1,628,169 13.65 % $ 954,369 8.00 % $ 1,103,489 9.25 % $ 1,192,961 10.00 % Tier I capital (to risk-weighted assets): Company $ 1,564,074 13.10 % $ 716,134 6.00 % $ 865,328 7.25 % N/A N/A Bank $ 1,543,700 12.94 % $ 715,777 6.00 % $ 685,953 7.25 % $ 954,369 8.00 % Tier I capital (to average assets): Company $ 1,564,074 11.78 % $ 530,885 4.00 % N/A N/A N/A N/A Bank $ 1,543,700 11.63 % $ 530,807 4.00 % N/A N/A $ 663,508 5.00 %

Mergers and Acquisitions - Addi

Mergers and Acquisitions - Additional Information (Details)	Jul. 29, 2016USD ($)branchshares	Sep. 30, 2017USD ($)statebranch	Mar. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Sep. 30, 2016USD ($)	Sep. 30, 2017USD ($)statebranch	Sep. 30, 2016USD ($)
Business Acquisition [Line Items]
Branches operated | branch		63				63
States in which entity operates | state		9				9
Loans receivable, Net		$ 10,879,341,000		$ 10,463,989,000		$ 10,879,341,000
Merger and integration expenses		260,000			$ 11,222,000	1,769,000	$ 13,962,000
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		475,000	$ (978,000)	(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, Net		$ 3,100,000,000		$ 3,590,000,000		$ 3,100,000,000
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	Sep. 30, 2017	Dec. 31, 2016
Liabilities Assumed:
Excess of consideration paid over fair value of net assets acquired (goodwill)		$ 464,450,000	$ 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	17,698,000
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	497,262,000
Excess of consideration paid over fair value of net assets acquired (goodwill)	$ 359,050,000	$ 359,000,000

Mergers and Acquisitions - Acqu

Mergers and Acquisitions - Acquisition Related Expenses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Business Acquisition [Line Items]
Total merger and integration expenses	$ 260	$ 11,222	$ 1,769	$ 13,962
Merger and Integration Expense
Business Acquisition [Line Items]
Total merger and integration expenses	260	11,222	1,769	13,962
Merger and Integration Expense | Wilshire
Business Acquisition [Line Items]
Total merger and integration expenses	288	11,198	1,226	13,890
Merger and Integration Expense | U & I Financial Corp [Member]
Business Acquisition [Line Items]
Total merger and integration expenses	(52)	0	471	0
Merger and Integration Expense | Other
Business Acquisition [Line Items]
Total merger and integration expenses	$ 24	$ 24	$ 72	$ 72

Stock-Based Compensation - Plan

Stock-Based Compensation - Plan Description (Details) - shares	Jul. 29, 2016	Sep. 30, 2017	Sep. 01, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant (in shares)		1,331,888
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
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 $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2017USD ($)$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding - beginning of period (in shares) | shares	1,603,876
Granted (in shares) | shares	0
Exercised (in shares) | shares	172,959
Expired (in shares) | shares	(268,070)
Forfeited (in shares) | shares	38,421
Outstanding - end of period (in shares) | shares	1,124,426
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	$ 15.28
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	7.19
Expired, Weighted-Average Exercise Price Per Share (in dollars per share) | $ / shares	21.35
Forfeited, Weighted-Average Exercise Price Per Share (in dollars per share) | $ / shares	17.17
Outstanding - end of period, Weighted-Average Exercise Price Per Share (in dollars per share) | $ / shares	$ 15.01
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Options exercisable - end of period (in shares) | shares	669,089
Options exercisable, Weighted-Average Exercise Price Per Share (in dollars per share) | $ / shares	$ 13.71
Outstanding, Weighted-Average Remaining Contractual Life (Years)	7 years 5 months 5 days
Options exercisable, Weighted-Average Remaining Contractual Life (Years)	6 years 7 months 12 days
Outstanding, Aggregate Intrinsic Value | $	$ 3,035
Options exercisable, Aggregate Intrinsic Value | $	$ 2,679

Stock-Based Compensation - Rest

Stock-Based Compensation - Restricted and Performance Unit Activity (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]
ESPP compensation expense	$ 18,000	$ 0	$ 18,000	$ 0
Allocated share-based compensation expense	792,000	1,900,000	2,300,000	2,000,000
Tax benefit from compensation expense	$ 304,000	$ 761,000	$ 886,000	821,000
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)			398,658
Granted (in shares)			165,612
Vested (in shares)			(145,392)
Forfeited (in shares)			(21,332)
Outstanding - end of period (in shares)	397,546		397,546
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)			$ 16.16
Granted, Weighted-Average Grant Date Fair Value (in dollars per share)			16.77
Vested, Weighted-Average Grant Date Fair Value (in dollars per share)			16.16
Forfeited, Weighted-Average Grant Date Fair Value (in dollars per share)			16.13
Outstanding - end of period, Weighted-Average Grant Date Fair Value (in dollars per share)	$ 16.41		$ 16.41
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]
Total compensation cost not yet recognized	$ 5,200,000		$ 5,200,000
Total compensation cost not yet recognized, period for recognition			2 years 7 months 9 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			$ 2,600,000	$ 1,700,000
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	$ 1,300,000		$ 1,300,000
Total compensation cost not yet recognized, period for recognition			2 years 11 months 7 days
Employee Stock Purchase Plan (ESPP)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]
Discount rate of the closing price, offering period			10.00%
Discount rate of the closing price, purchase date			10.00%
Maximum amount of common shares purchased under ESPP of employee's base salary, percent	20.00%		20.00%
Cap amount for shares purchased per employee			$ 25,000

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Net income (Numerator)
Net income available to common stockholders - basic	$ 44,564	$ 26,105	$ 121,461	$ 73,117
Net income available to common stockholders - diluted	$ 44,564	$ 26,105	$ 121,461	$ 73,117
Shares (Denominator)
Weighted-Average Shares (Denominator) (shares)	135,382,457	116,622,920	135,296,332	91,940,070
Effect of Dilutive Securities:
Stock options and performance units (shares)	248,455	328,154	365,633	326,175
Diluted EPS - common stock (shares)	135,630,912	116,951,074	135,661,965	92,266,245
Per Share (Amount)
Basic EPS - common stock (in dollars per share)	$ 0.33	$ 0.22	$ 0.90	$ 0.80
Diluted EPS - common stock (in dollars per share)	$ 0.33	$ 0.22	$ 0.90	$ 0.79
Stock options and restricted shares
Antidilutive Securities Excluded from Computation of Earnings Per Share
Antidilutive shares of common stock	762,833	609,186	484,426	559,790
Warrants
Antidilutive Securities Excluded from Computation of Earnings Per Share
Antidilutive shares of common stock	20,238	19,703	20,087	19,552

Securities Available for Sale -

Securities Available for Sale - Summary of Securities Available for Sale (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 1,886,137	$ 1,582,309
Gross Unrealized Gains	3,120	1,842
Gross Unrealized Losses	(20,948)	(27,411)
Securities available for sale, at fair value	1,868,309	1,556,740
Debt securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	5,000	12,005
Gross Unrealized Gains	0	3
Gross Unrealized Losses	(1)	0
Securities available for sale, at fair value	4,999	12,008
Residential
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	911,229	715,981
Gross Unrealized Gains	332	349
Gross Unrealized Losses	(9,679)	(10,663)
Securities available for sale, at fair value	901,882	705,667
Residential
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	600,155	599,755
Gross Unrealized Gains	1,566	1,132
Gross Unrealized Losses	(5,451)	(9,311)
Securities available for sale, at fair value	596,270	591,576
Commercial
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	245,972	141,549
Gross Unrealized Gains	128	0
Gross Unrealized Losses	(4,672)	(5,084)
Securities available for sale, at fair value	241,428	136,465
Corporate securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	4,571	11,576
Gross Unrealized Gains	4	0
Gross Unrealized Losses	0	(449)
Securities available for sale, at fair value	4,575	11,127
Municipal securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	96,785	88,018
Gross Unrealized Gains	1,063	358
Gross Unrealized Losses	(796)	(1,537)
Securities available for sale, at fair value	97,052	86,839
Total debt securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	1,863,712	1,568,884
Gross Unrealized Gains	3,093	1,842
Gross Unrealized Losses	(20,599)	(27,044)
Securities available for sale, at fair value	1,846,206	1,543,682
Mutual funds
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	22,425	13,425
Gross Unrealized Gains	27	0
Gross Unrealized Losses	(349)	(367)
Securities available for sale, at fair value	$ 22,103	$ 13,058

Securities Available for Sale45

Securities Available for Sale - Amortized Cost and Estimated Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]
Amortized Cost - Due within one year	$ 5,724
Amortized Cost - Due after one year through five years	11,567
Amortized Cost - Due after five years through ten years	39,563
Amortized Cost - Due after ten years	49,502
Amortized Cost	1,886,137	$ 1,582,309
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Estimated Fair Value - Due within one year	5,726
Estimated Fair Value - Due after one year through five years	11,875
Estimated Fair Value - Due after five years through ten years	40,060
Estimated Fair Value - Due after ten years	48,965
Estimated Fair Value	1,868,309	1,556,740
Available-for-sale Securities, Restricted	349,200	382,100
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	3,120	1,842
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	20,948	27,411
Debt securities
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]
Amortized Cost	5,000	12,005
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Estimated Fair Value	4,999	12,008
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	0	3
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	1	0
Residential
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]
Amortized Cost - no single maturity date	911,229
Amortized Cost	911,229	715,981
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Estimated Fair Value - no single maturity date	901,882
Estimated Fair Value	901,882	705,667
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	332	349
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	9,679	10,663
Residential
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]
Amortized Cost - no single maturity date	600,155
Amortized Cost	600,155	599,755
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Estimated Fair Value - no single maturity date	596,270
Estimated Fair Value	596,270	591,576
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	1,566	1,132
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	5,451	9,311
Commercial
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]
Amortized Cost - no single maturity date	245,972
Amortized Cost	245,972	141,549
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Estimated Fair Value - no single maturity date	241,428
Estimated Fair Value	241,428	136,465
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	128	0
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	4,672	5,084
Corporate securities
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]
Amortized Cost	4,571	11,576
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Estimated Fair Value	4,575	11,127
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	4	0
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	0	449
Municipal securities
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]
Amortized Cost	96,785	88,018
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Estimated Fair Value	97,052	86,839
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	1,063	358
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	796	1,537
Mutual funds
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]
Amortized Cost - no single maturity date	22,425
Amortized Cost	22,425	13,425
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Estimated Fair Value - no single maturity date	22,103
Estimated Fair Value	22,103	13,058
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	27	0
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	$ 349	$ 367

Securities Available for Sale46

Securities Available for Sale - Aggregate Unrealized Losses and Fair Value (Details)		3 Months Ended		9 Months Ended		12 Months Ended
		Sep. 30, 2017USD ($)security	Sep. 30, 2016USD ($)	Sep. 30, 2017USD ($)security	Sep. 30, 2016USD ($)	Dec. 31, 2016USD ($)security	Mar. 31, 2017USD ($)	Mar. 31, 2016USD ($)	Dec. 31, 2015USD ($)
Number of Securities
Number of Securities, Less than 12 months | security		109		109		222
Number of Securities, 12 months or longer | security		52		52		5
Number of Securities, Total | security		161		161		227
Fair Value
Fair Value - Less than 12 months		$ 979,215,000		$ 979,215,000		$ 1,328,003,000
Fair Value - 12 months or longer		474,272,000		474,272,000		40,446,000
Fair Value - Total		1,453,487,000		1,453,487,000		1,368,449,000
Gross Unrealized Losses
Gross Unrealized Losses - Less than 12 months		(7,462,000)		(7,462,000)		(25,760,000)
Gross Unrealized Losses - 12 months or longer		(13,486,000)		(13,486,000)		(1,651,000)
Gross Unrealized Losses - Total		(20,948,000)		(20,948,000)		(27,411,000)
Unrealized losses on securities		(10,211,000)	$ 8,417,000	(10,211,000)	$ 8,417,000	(14,657,000)	$ (10,089,000)	$ 10,974,000	$ (1,832,000)
OTTI recognized				0
Reclassification adjustment for gains realized in income		0	$ 948,000	0	$ 948,000
Available-for-sale Securities
Gross Unrealized Losses
Unrealized losses on securities		(10,200,000)		(10,200,000)		(14,600,000)
Interest-Only-Strip
Gross Unrealized Losses
Unrealized losses on securities		(40,000)		$ (40,000)		$ (14,000)
Non-US Government and Agency Securities [Member] | Credit concentration risk | Stockholders' equity
Gross Unrealized Losses
Maximum exposure to any single issuer				10.00%		10.00%
Collateralized mortgage obligations
Gross Unrealized Losses
Gross Unrealized Losses - 12 months or longer	[1]	$ (5,300,000)		$ (5,300,000)
OTTI recognized				$ 0
Debt securities
Number of Securities
Number of Securities, Less than 12 months | security	[1]	1		1
Number of Securities, 12 months or longer | security	[1]	0		0
Number of Securities, Total | security	[1]	1		1
Fair Value
Fair Value - Less than 12 months	[1]	$ 4,999,000		$ 4,999,000
Fair Value - 12 months or longer	[1]	0		0
Fair Value - Total	[1]	4,999,000		4,999,000
Gross Unrealized Losses
Gross Unrealized Losses - Less than 12 months	[1]	(1,000)		(1,000)
Gross Unrealized Losses - 12 months or longer	[1]	0		0
Gross Unrealized Losses - Total	[1]	$ (1,000)		$ (1,000)
Residential
Number of Securities
Number of Securities, Less than 12 months | security	[1]	56		56		66
Number of Securities, 12 months or longer | security	[1]	26		26		4
Number of Securities, Total | security		82		82		70
Fair Value
Fair Value - Less than 12 months	[1]	$ 566,997,000		$ 566,997,000		$ 615,803,000
Fair Value - 12 months or longer	[1]	228,250,000		228,250,000		36,333,000
Fair Value - Total		795,247,000		795,247,000		652,136,000
Gross Unrealized Losses
Gross Unrealized Losses - Less than 12 months	[1]	(4,406,000)		(4,406,000)		(9,459,000)
Gross Unrealized Losses - 12 months or longer	[1]	(5,273,000)		(5,273,000)		(1,204,000)
Gross Unrealized Losses - Total		$ (9,679,000)		$ (9,679,000)		$ (10,663,000)
Residential
Number of Securities
Number of Securities, Less than 12 months | security	[1]	27		27		48
Number of Securities, 12 months or longer | security	[1]	13		13		0
Number of Securities, Total | security		40		40		48
Fair Value
Fair Value - Less than 12 months	[1]	$ 291,483,000		$ 291,483,000		$ 486,332,000
Fair Value - 12 months or longer	[1]	116,490,000		116,490,000		0
Fair Value - Total		407,973,000		407,973,000		486,332,000
Gross Unrealized Losses
Gross Unrealized Losses - Less than 12 months	[1]	(1,922,000)		(1,922,000)		(9,311,000)
Gross Unrealized Losses - 12 months or longer	[1]	(3,529,000)		(3,529,000)		0
Gross Unrealized Losses - Total		$ (5,451,000)		$ (5,451,000)		$ (9,311,000)
Commercial
Number of Securities
Number of Securities, Less than 12 months | security		8		8		9
Number of Securities, 12 months or longer | security		6		6		0
Number of Securities, Total | security		14		14		9
Fair Value
Fair Value - Less than 12 months		$ 86,608,000		$ 86,608,000		$ 136,465,000
Fair Value - 12 months or longer		106,790,000		106,790,000		0
Fair Value - Total		193,398,000		193,398,000		136,465,000
Gross Unrealized Losses
Gross Unrealized Losses - Less than 12 months		(804,000)		(804,000)		(5,084,000)
Gross Unrealized Losses - 12 months or longer		(3,868,000)		(3,868,000)		0
Gross Unrealized Losses - Total		$ (4,672,000)		$ (4,672,000)		$ (5,084,000)
Corporate securities
Number of Securities
Number of Securities, Less than 12 months | security						1
Number of Securities, 12 months or longer | security						1
Number of Securities, Total | security						2
Fair Value
Fair Value - Less than 12 months						$ 7,014,000
Fair Value - 12 months or longer						4,113,000
Fair Value - Total						11,127,000
Gross Unrealized Losses
Gross Unrealized Losses - Less than 12 months						(2,000)
Gross Unrealized Losses - 12 months or longer						(447,000)
Gross Unrealized Losses - Total						$ (449,000)
Municipal securities
Number of Securities
Number of Securities, Less than 12 months | security		14		14		95
Number of Securities, 12 months or longer | security		6		6		0
Number of Securities, Total | security		20		20		95
Fair Value
Fair Value - Less than 12 months		$ 13,521,000		$ 13,521,000		$ 69,331,000
Fair Value - 12 months or longer		17,735,000		17,735,000		0
Fair Value - Total		31,256,000		31,256,000		69,331,000
Gross Unrealized Losses
Gross Unrealized Losses - Less than 12 months		(221,000)		(221,000)		(1,537,000)
Gross Unrealized Losses - 12 months or longer		(575,000)		(575,000)		0
Gross Unrealized Losses - Total		$ (796,000)		$ (796,000)		$ (1,537,000)
Mutual funds
Number of Securities
Number of Securities, Less than 12 months | security		3		3		3
Number of Securities, 12 months or longer | security		1		1		0
Number of Securities, Total | security		4		4		3
Fair Value
Fair Value - Less than 12 months		$ 15,607,000		$ 15,607,000		$ 13,058,000
Fair Value - 12 months or longer		5,007,000		5,007,000		0
Fair Value - Total		20,614,000		20,614,000		13,058,000
Gross Unrealized Losses
Gross Unrealized Losses - Less than 12 months		(108,000)		(108,000)		(367,000)
Gross Unrealized Losses - 12 months or longer		(241,000)		(241,000)		0
Gross Unrealized Losses - Total		(349,000)		(349,000)		$ (367,000)
Mortgage-backed securities
Gross Unrealized Losses
Gross Unrealized Losses - 12 months or longer	[1]	$ (7,400,000)		(7,400,000)
OTTI recognized				$ 0
[1]	Investments in U.S. Government agency and U.S. Government sponsored enterprises

Loans Receivable and Allowanc47

Loans Receivable and Allowance for Loan Losses - Schedule of Accounts, Notes, Loans and Financing Receivable (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2017USD ($)segment	Mar. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Sep. 30, 2016USD ($)	Mar. 31, 2016USD ($)	Dec. 31, 2015USD ($)
Real estate loans:
Loans	$ 10,964,813		$ 10,544,989
Less: deferred loan fees	(1,839)		(1,657)
Loans receivable	10,962,974		10,543,332
Less: allowance for loan losses	(83,633)	$ (80,074)	(79,343)	$ (79,976)	$ (76,425)	$ (76,408)
Loans receivable, net of allowance for loan losses	$ 10,879,341		10,463,989
Number of portfolio segments | segment	4
Real estate loans
Real estate loans:
Loans	$ 8,438,065		8,154,570
Real estate loans | Residential
Real estate loans:
Loans	55,072		57,884
Less: allowance for loan losses	(161)		(209)
Real estate loans | Commercial & industrial
Real estate loans:
Loans	8,085,307		7,842,573
Less: allowance for loan losses	(54,280)		(49,917)
Real estate loans | Construction
Real estate loans:
Loans	297,686		254,113
Less: allowance for loan losses	(1,486)		(1,621)
Commercial business
Real estate loans:
Loans	1,824,442		1,832,021
Less: allowance for loan losses	(23,384)		(23,547)
Trade finance
Real estate loans:
Loans	180,847		154,928
Less: allowance for loan losses	(1,582)		(1,897)
Consumer and other
Real estate loans:
Loans	521,459		403,470
Less: allowance for loan losses	$ (2,740)		$ (2,152)

Loans Receivable and Allowanc48

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		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Balance at beginning of period	$ 53,657	$ 20,150	$ 43,611	$ 23,777
Additions due to acquisitions during the period	0	41,271	0	41,271
Accretion	(5,815)	(4,723)	(16,375)	(10,226)
Changes in expected cash flows	6,696	40	27,302	1,916
Balance at end of period	$ 54,538	$ 56,738	$ 54,538	$ 56,738

Loans Receivable and Allowanc49

Loans Receivable and Allowance for Loan Losses - Allowance for Credit Losses on Financing Receivables (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016
Allowance for Loan Losses and the Loans Receivables by Impairment Methodology
Recognized provision for credit losses related to unfunded commitments	$ (2,800)	$ 270	$ (2,400)	$ (191)
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period			79,343	76,408
Provision (credit) for loan losses	5,400	6,500	13,760	8,200
Loans charged off	(4,913)	(3,958)	(13,640)	(7,075)
Recoveries of charged offs	3,072	1,009	4,170	2,443
Balance, end of period	83,633	79,976	83,633	79,976
Allowance for loan losses - Individually evaluated for impairment					$ 6,807		$ 7,409
Allowance for loan losses - Collectively evaluated for impairment					66,215		59,804
Allowance for loan losses - Total	83,633	79,976	79,343	76,408	83,633	$ 80,074	79,343	$ 76,425
Loans outstanding - Individually evaluated for impairment					108,460		140,361
Loans outstanding - Collectively evaluated for impairment					10,646,822		10,131,183
Loans outstanding - ACILs					10,879,341		10,463,989
Total loans outstanding					10,964,813		10,544,989
Legacy
Allowance for Loan Losses by Portfolio Segment
Total loans outstanding					7,996,781		6,721,566
Acquired
Allowance for Loan Losses by Portfolio Segment
Provision (credit) for loan losses	845		1,300
Total loans outstanding					2,968,032		3,823,423
Real estate
Allowance for Loan Losses by Portfolio Segment
Total loans outstanding					8,438,065		8,154,570
Real estate | Legacy
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period			38,956	42,829
Provision (credit) for loan losses	3,664	(2,474)	7,174	(2,318)
Loans charged off	(175)	(132)	(2,221)	(151)
Recoveries of charged offs	23	432	81	1,132
Balance, end of period	43,990	41,492	43,990	41,492
Allowance for loan losses - Individually evaluated for impairment					1,462		1,889
Allowance for loan losses - Collectively evaluated for impairment					42,528		37,067
Allowance for loan losses - Total	43,990	41,492	38,956	42,829	43,990	40,478	38,956	43,666
Loans outstanding - Individually evaluated for impairment					48,535		74,085
Loans outstanding - Collectively evaluated for impairment					5,996,526		5,271,262
Total loans outstanding					6,045,061		5,345,347
Real estate | Acquired
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period			12,791	12,823
Provision (credit) for loan losses	(1,312)	527	(406)	633
Loans charged off	(162)	(435)	(479)	(758)
Recoveries of charged offs	0	8	31	9
Balance, end of period	11,937	12,707	11,937	12,707
Allowance for loan losses - Individually evaluated for impairment					245		113
Allowance for loan losses - Collectively evaluated for impairment					1,081		548
Allowance for loan losses - Total	11,937	12,707	12,791	12,823	11,937	13,411	12,791	12,607
Loans outstanding - Individually evaluated for impairment					10,155		23,865
Loans outstanding - Collectively evaluated for impairment					2,213,662		2,597,200
Total loans outstanding					2,393,004		2,809,223
Commercial business
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period			23,547
Balance, end of period	23,384		23,384
Allowance for loan losses - Total	23,384		23,547		23,384		23,547
Total loans outstanding					1,824,442		1,832,021
Commercial business | Legacy
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period			23,430	16,332
Provision (credit) for loan losses	1,499	7,444	2,356	9,792
Loans charged off	(3,870)	(3,219)	(7,485)	(5,845)
Recoveries of charged offs	3,020	539	3,843	1,061
Balance, end of period	22,144	21,340	22,144	21,340
Allowance for loan losses - Individually evaluated for impairment					4,679		4,420
Allowance for loan losses - Collectively evaluated for impairment					17,465		19,010
Allowance for loan losses - Total	22,144	21,340	23,430	16,332	22,144	21,495	23,430	16,576
Loans outstanding - Individually evaluated for impairment					35,494		34,783
Loans outstanding - Collectively evaluated for impairment					1,437,398		1,079,348
Total loans outstanding					1,472,892		1,114,131
Commercial business | Acquired
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period			117	214
Provision (credit) for loan losses	395	72	1,517	(82)
Loans charged off	(471)	(10)	(596)	(43)
Recoveries of charged offs	25	27	202	148
Balance, end of period	1,240	237	1,240	237
Allowance for loan losses - Individually evaluated for impairment					415		73
Allowance for loan losses - Collectively evaluated for impairment					825		44
Allowance for loan losses - Total	1,240	237	117	214	1,240	1,291	117	148
Loans outstanding - Individually evaluated for impairment					4,885		435
Loans outstanding - Collectively evaluated for impairment					317,150		650,710
Total loans outstanding					351,550		717,890
Trade finance
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period			1,897
Balance, end of period	1,582		1,582
Allowance for loan losses - Total	1,582		1,897		1,582		1,897
Total loans outstanding					180,847		154,928
Trade finance | Legacy
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period			1,897	3,592
Provision (credit) for loan losses	418	(32)	1,621	(1,175)
Loans charged off	0	0	(2,104)	0
Recoveries of charged offs	2	0	6	0
Balance, end of period	1,420	2,417	1,420	2,417
Allowance for loan losses - Individually evaluated for impairment					2		864
Allowance for loan losses - Collectively evaluated for impairment					1,418		1,033
Allowance for loan losses - Total	1,420	2,417	1,897	3,592	1,420	1,000	1,897	2,449
Loans outstanding - Individually evaluated for impairment					4,201		6,029
Loans outstanding - Collectively evaluated for impairment					133,599		75,365
Total loans outstanding					137,800		81,394
Trade finance | Acquired
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period			0	0
Provision (credit) for loan losses	56	0	162	0
Loans charged off	0	0	0	0
Recoveries of charged offs	0	0	0	0
Balance, end of period	162	0	162	0
Allowance for loan losses - Individually evaluated for impairment					0		0
Allowance for loan losses - Collectively evaluated for impairment					162		0
Allowance for loan losses - Total	162	0	0	0	162	106	0	0
Loans outstanding - Individually evaluated for impairment					3,384		0
Loans outstanding - Collectively evaluated for impairment					39,663		70,535
Total loans outstanding					43,047		73,534
Consumer and other
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period			2,152
Balance, end of period	2,740		2,740
Allowance for loan losses - Total	2,740		2,152		2,740		2,152
Total loans outstanding					521,459		403,470
Consumer and other | Legacy
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period			2,116	556
Provision (credit) for loan losses	664	970	1,348	1,370
Loans charged off	(218)	(162)	(738)	(278)
Recoveries of charged offs	0	2	2	88
Balance, end of period	2,728	1,736	2,728	1,736
Allowance for loan losses - Individually evaluated for impairment					4		50
Allowance for loan losses - Collectively evaluated for impairment					2,724		2,066
Allowance for loan losses - Total	2,728	1,736	2,116	556	2,728	2,282	2,116	926
Loans outstanding - Individually evaluated for impairment					1,048		733
Loans outstanding - Collectively evaluated for impairment					339,980		179,961
Total loans outstanding					341,028		180,694
Consumer and other | Acquired
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period			36	62
Provision (credit) for loan losses	16	(7)	(12)	(20)
Loans charged off	(17)	0	(17)	0
Recoveries of charged offs	2	1	5	5
Balance, end of period	12	47	12	47
Allowance for loan losses - Individually evaluated for impairment					0		0
Allowance for loan losses - Collectively evaluated for impairment					12		36
Allowance for loan losses - Total	12	$ 47	36	$ 62	12	$ 11	36	$ 53
Loans outstanding - Individually evaluated for impairment					758		431
Loans outstanding - Collectively evaluated for impairment					168,844		206,802
Total loans outstanding					180,431		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	10,611		10,611
Allowance for loan losses - Total	10,611		12,130		10,611		12,130
Loans outstanding - ACILs					209,531		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		0
Allowance for loan losses - Total	0		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	10,611		10,611
Allowance for loan losses - Total	10,611		12,130		10,611		12,130
Loans outstanding - ACILs					169,187		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		0
Allowance for loan losses - Total	0		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		0
Allowance for loan losses - Total	0		0		0		0
Loans outstanding - ACILs					29,515		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		0
Allowance for loan losses - Total	0		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		0
Allowance for loan losses - Total	0		0		0		0
Loans outstanding - ACILs					0		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		0
Allowance for loan losses - Total	0		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		0
Allowance for loan losses - Total	$ 0		$ 0		0		0
Loans outstanding - ACILs					$ 10,829		$ 15,543

Loans Receivable and Allowanc50

Loans Receivable and Allowance for Loan Losses - Impaired Financing Receivables (Details) - USD ($) $ in Thousands		3 Months Ended				9 Months Ended
		Sep. 30, 2017		Sep. 30, 2016		Sep. 30, 2017	Sep. 30, 2016		Dec. 31, 2016
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance	[1]	$ 41,097				$ 41,097			$ 60,758
Recorded Investment, With no related allowance	[1]	67,363				67,363			79,603
Related Allowance		(6,807)				(6,807)			(7,409)
Impaired Loans, net of allowance		101,653				101,653			132,952
Total recorded investment	[1]	108,460				108,460			140,361
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		44,734				44,734			62,494
Unpaid Contractual Principal Balance, With no related allowance		88,634				88,634			91,065
Impaired Financing Receivable, Unpaid Principal Balance		133,368				133,368			153,559
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance	[1]	40,412		$ 67,873		48,432	$ 73,507
Average Recorded Investment, With no related allowance	[1]	64,147		64,460		71,336	62,288
Average Recorded Investment, Total	[1]	104,559		132,333		119,768	135,795
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		403		659		1,207	1,935
Interest Income Recognized during Impairment, With no related allowance		467		364		1,346	1,109
Interest Income Recognized during Impairment, Total		870		1,023		$ 2,553	3,044
Threshold period for loans to be placed on nonaccrual status						90 days
WIthout charge-offs
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance		40,218				$ 40,218			59,638
Recorded Investment, With no related allowance		60,129				60,129			76,775
With charge-offs
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance		879				879			1,120
Recorded Investment, With no related allowance		7,234				7,234			2,828
Acquired
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance	[1]	3,347				3,347			2,593
Recorded Investment, With no related allowance	[1]	15,835				15,835			22,138
Related Allowance		(660)				(660)			(186)
Total recorded investment	[1]	19,182				19,182			24,731
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		5,166				5,166			2,930
Unpaid Contractual Principal Balance, With no related allowance		25,742				25,742			26,118
Impaired Financing Receivable, Unpaid Principal Balance		30,908				30,908			29,048
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance	[1]	3,296		2,345		2,736	2,697
Average Recorded Investment, With no related allowance	[1]	13,264		14,154		16,881	15,719
Average Recorded Investment, Total	[1]	16,560		16,499		19,617	18,416
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		19		6		51	18
Interest Income Recognized during Impairment, With no related allowance		199		70		559	223
Interest Income Recognized during Impairment, Total		218		76		610	241
Real estate | Residential
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance	[1]	0				0			0
Recorded Investment, With no related allowance	[1]	498				498			3,562
Related Allowance		0				0			0
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		0				0			0
Unpaid Contractual Principal Balance, With no related allowance		1,488				1,488			3,562
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance	[1]	0		0		0	0
Average Recorded Investment, With no related allowance	[1]	249		0		1,381	0
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		0		0		0	0
Interest Income Recognized during Impairment, With no related allowance		20		0		57	0
Real estate | Residential | Acquired
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance	[1]	0				0			0
Recorded Investment, With no related allowance	[1]	498				498			679
Related Allowance		0				0			0
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		0				0			0
Unpaid Contractual Principal Balance, With no related allowance		1,488				1,488			679
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance		0	[1]	0	[1]	0	0	[1]
Average Recorded Investment, With no related allowance	[1]	249		0		294	0
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		0		0		0	0
Interest Income Recognized during Impairment, With no related allowance		20		0		57	0
Real estate | Commercial & industrial
Impaired Loans, Recorded Investment
Related Allowance		(1,707)				(1,707)			(2,002)
Real estate | Commercial & industrial | Retail
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance	[1]	931				931			2,095
Recorded Investment, With no related allowance	[1]	10,467				10,467			12,753
Related Allowance		(132)				(132)			(90)
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		936				936			2,384
Unpaid Contractual Principal Balance, With no related allowance		12,210				12,210			13,290
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance	[1]	1,197		1,711		1,268	1,711
Average Recorded Investment, With no related allowance	[1]	10,071		9,381		12,412	10,243
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		4		0		11	0
Interest Income Recognized during Impairment, With no related allowance		91		95		263	296
Real estate | Commercial & industrial | Retail | Acquired
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance	[1]	661				661			1,826
Recorded Investment, With no related allowance	[1]	1,962				1,962			3,148
Related Allowance		(127)				(127)			(85)
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		666				666			2,114
Unpaid Contractual Principal Balance, With no related allowance		2,279				2,279			3,214
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance	[1]	927		1,386		998	1,277
Average Recorded Investment, With no related allowance	[1]	1,709		2,095		2,729	2,333
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		4		0		11	0
Interest Income Recognized during Impairment, With no related allowance		15		21		45	72
Real estate | Commercial & industrial | Hotel & motel
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance	[1]	2,696				2,696			6,387
Recorded Investment, With no related allowance	[1]	8,172				8,172			6,122
Related Allowance		(263)				(263)			(337)
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		3,667				3,667			6,387
Unpaid Contractual Principal Balance, With no related allowance		12,262				12,262			11,735
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance	[1]	2,269		1,320		4,330	2,965
Average Recorded Investment, With no related allowance	[1]	10,494		9,776		8,346	8,813
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		17		16		49	48
Interest Income Recognized during Impairment, With no related allowance		59		54		175	163
Real estate | Commercial & industrial | Hotel & motel | Acquired
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance	[1]	87				87			0
Recorded Investment, With no related allowance	[1]	536				536			4,767
Related Allowance		(2)				(2)			0
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		87				87			0
Unpaid Contractual Principal Balance, With no related allowance		2,388				2,388			7,171
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance	[1]	174		0		110	0
Average Recorded Investment, With no related allowance	[1]	2,671		4,983		3,737	5,933
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		0		0		0	0
Interest Income Recognized during Impairment, With no related allowance		0		3		0	10
Real estate | Commercial & industrial | Gas station & car wash
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance	[1]	0				0			215
Recorded Investment, With no related allowance	[1]	2,939				2,939			5,043
Related Allowance		0				0			(41)
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		0				0			228
Unpaid Contractual Principal Balance, With no related allowance		6,646				6,646			7,449
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance	[1]	0		1,052		54	1,051
Average Recorded Investment, With no related allowance	[1]	3,022		4,855		3,812	4,760
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		0		9		0	28
Interest Income Recognized during Impairment, With no related allowance		114		25		317	75
Real estate | Commercial & industrial | Gas station & car wash | Acquired
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance	[1]	0				0			0
Recorded Investment, With no related allowance	[1]	448				448			1,568
Related Allowance		0				0			0
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		0				0			0
Unpaid Contractual Principal Balance, With no related allowance		2,146				2,146			1,815
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance	[1]	0		0		0	254
Average Recorded Investment, With no related allowance	[1]	454		1,589		774	1,490
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		0		0		0	0
Interest Income Recognized during Impairment, With no related allowance		0		25		0	75
Real estate | Commercial & industrial | Mixed use
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance	[1]	169				169			206
Recorded Investment, With no related allowance	[1]	1,319				1,319			7,303
Related Allowance		(7)				(7)			(27)
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		727				727			732
Unpaid Contractual Principal Balance, With no related allowance		3,732				3,732			7,822
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance	[1]	228		208		228	386
Average Recorded Investment, With no related allowance	[1]	1,274		2,195		4,095	2,279
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		2		2		5	5
Interest Income Recognized during Impairment, With no related allowance		109		9		324	28
Real estate | Commercial & industrial | Mixed use | Acquired
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance	[1]	131				131			136
Recorded Investment, With no related allowance	[1]	162				162			5,315
Related Allowance		(6)				(6)			(2)
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		131				131			136
Unpaid Contractual Principal Balance, With no related allowance		2,240				2,240			5,551
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance	[1]	190		139		191	316
Average Recorded Investment, With no related allowance	[1]	104		166		2,701	219
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		2		2		5	5
Interest Income Recognized during Impairment, With no related allowance		0		0		0	0
Real estate | Commercial & industrial | Industrial & warehouse
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance	[1]	988				988			530
Recorded Investment, With no related allowance	[1]	8,054				8,054			9,673
Related Allowance		(135)				(135)			0
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		1,670				1,670			530
Unpaid Contractual Principal Balance, With no related allowance		8,140				8,140			9,748
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance	[1]	746		542		1,226	551
Average Recorded Investment, With no related allowance	[1]	8,390		10,905		8,738	10,396
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		0		6		0	18
Interest Income Recognized during Impairment, With no related allowance		68		89		191	268
Real estate | Commercial & industrial | Industrial & warehouse | Acquired
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance	[1]	402				402			0
Recorded Investment, With no related allowance	[1]	55				55			66
Related Allowance		(100)				(100)			0
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		1,084				1,084			0
Unpaid Contractual Principal Balance, With no related allowance		55				55			66
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance	[1]	452		0		226	0
Average Recorded Investment, With no related allowance	[1]	60		1,038		63	1,075
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		0		0		0	0
Interest Income Recognized during Impairment, With no related allowance		1		2		2	7
Real estate | Commercial & industrial | Other
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance	[1]	4,389				4,389			22,580
Recorded Investment, With no related allowance	[1]	16,768				16,768			20,181
Related Allowance		(1,170)				(1,170)			(1,507)
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		4,389				4,389			22,825
Unpaid Contractual Principal Balance, With no related allowance		18,278				18,278			21,492
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance	[1]	4,572		23,474		13,534	23,968
Average Recorded Investment, With no related allowance	[1]	14,733		9,912		16,324	11,312
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		60		259		175	776
Interest Income Recognized during Impairment, With no related allowance		6		59		19	177
Real estate | Commercial & industrial | Other | Acquired
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance	[1]	279				279			337
Recorded Investment, With no related allowance	[1]	4,934				4,934			6,023
Related Allowance		(10)				(10)			(26)
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		279				279			341
Unpaid Contractual Principal Balance, With no related allowance		5,800				5,800			6,752
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance	[1]	303		344		319	324
Average Recorded Investment, With no related allowance	[1]	3,806		3,215		4,205	3,520
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		4		4		11	13
Interest Income Recognized during Impairment, With no related allowance		46		13		116	39
Real estate | Construction
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance	[1]	0				0			0
Recorded Investment, With no related allowance	[1]	1,300				1,300			1,300
Related Allowance		0				0			0
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		0				0			0
Unpaid Contractual Principal Balance, With no related allowance		1,441				1,441			1,441
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance	[1]	0		0		0	0
Average Recorded Investment, With no related allowance	[1]	1,300		1,300		1,689	1,328
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		0		0		0	0
Interest Income Recognized during Impairment, With no related allowance		0		0		0	0
Real estate | Construction | Acquired
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance	[1]	0				0			0
Recorded Investment, With no related allowance	[1]	0				0			0
Related Allowance		0				0			0
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		0				0			0
Unpaid Contractual Principal Balance, With no related allowance		0				0			0
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance	[1]	0		0		0	0
Average Recorded Investment, With no related allowance	[1]	0		0		0	0
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		0		0		0	0
Interest Income Recognized during Impairment, With no related allowance		0		0		0	0
Commercial business
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance	[1]	27,292				27,292			26,543
Recorded Investment, With no related allowance	[1]	13,087				13,087			8,675
Related Allowance		(5,094)				(5,094)			(4,493)
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		28,713				28,713			27,161
Unpaid Contractual Principal Balance, With no related allowance		17,917				17,917			9,472
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance	[1]	27,031		32,553		25,036	34,147
Average Recorded Investment, With no related allowance	[1]	11,544		13,111		10,417	11,030
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		261		296		749	821
Interest Income Recognized during Impairment, With no related allowance		0		26		0	79
Commercial business | Acquired
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance	[1]	1,787				1,787			294
Recorded Investment, With no related allowance	[1]	3,098				3,098			141
Related Allowance		(415)				(415)			(73)
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		2,919				2,919			339
Unpaid Contractual Principal Balance, With no related allowance		3,453				3,453			386
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance	[1]	1,250		396		892	486
Average Recorded Investment, With no related allowance	[1]	1,835		707		1,014	690
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		9		0		24	0
Interest Income Recognized during Impairment, With no related allowance		47		4		142	13
Trade finance
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance	[1]	4,201				4,201			2,111
Recorded Investment, With no related allowance	[1]	3,384				3,384			3,918
Related Allowance		(2)				(2)			(864)
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		4,201				4,201			2,156
Unpaid Contractual Principal Balance, With no related allowance		5,067				5,067			3,918
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance	[1]	4,118		6,465		2,587	8,390
Average Recorded Investment, With no related allowance	[1]	1,765		2,225		2,975	1,113
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		58		70		215	237
Interest Income Recognized during Impairment, With no related allowance		0		0		0	0
Trade finance | Acquired
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance	[1]	0				0			0
Recorded Investment, With no related allowance	[1]	3,384				3,384			0
Related Allowance		0				0			0
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		0				0			0
Unpaid Contractual Principal Balance, With no related allowance		5,067				5,067			0
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance	[1]	0		0		0	0
Average Recorded Investment, With no related allowance	[1]	1,692		0		846	0
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		0		0		0	0
Interest Income Recognized during Impairment, With no related allowance		68		0		191	0
Consumer and other
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance	[1]	431				431			91
Recorded Investment, With no related allowance	[1]	1,375				1,375			1,073
Related Allowance		(4)				(4)			(50)
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		431				431			91
Unpaid Contractual Principal Balance, With no related allowance		1,453				1,453			1,136
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance	[1]	251		548		169	338
Average Recorded Investment, With no related allowance	[1]	1,305		800		1,147	1,014
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		1		1		3	2
Interest Income Recognized during Impairment, With no related allowance		0		7		0	23
Consumer and other | Acquired
Impaired Loans, Recorded Investment
Recorded Investment, With related allowance	[1]	0				0			0
Recorded Investment, With no related allowance	[1]	758				758			431
Related Allowance		0				0			0
Impaired Loans, Unpaid Principal Balance
Unpaid Contractual Principal Balance, With related allowance		0				0			0
Unpaid Contractual Principal Balance, With no related allowance		826				826			$ 484
Impaired Loans, Average Recorded Investment
Average Recorded Investment, With related allowance	[1]	0		80		0	40
Average Recorded Investment, With no related allowance	[1]	684		361		518	459
Impaired Loans, Interest Income Recognized during Impairment
Interest Income Recognized during Impairment, With related allowance		0		0		0	0
Interest Income Recognized during Impairment, With no related allowance		$ 2		$ 2		$ 6	$ 7
[1]	Unpaid contractual principal balance less charge offs, interest collected applied to principal if on nonaccrual and purchase discounts.

Loans Receivable and Allowanc51

Loans Receivable and Allowance for Loan Losses - Past Due Financing Receivables (Details) - USD ($) $ in Thousands		Sep. 30, 2017		Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		$ 15,952		$ 18,342
Total Delinquent loans		59,275		58,416
Guaranteed portion of delinquent SBA loans excluded from Nonaccrual loans		21,500		15,900
Nonaccrual loans less than 30 days past due		43,323		40,074
Legacy
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		12,836		13,278
Total Delinquent loans		49,914		42,222
Nonaccrual loans less than 30 days past due		37,078	[1]	28,944	[2]
Legacy | Commercial business
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		3,770		1,373
Total Delinquent loans		13,255		10,744
Nonaccrual loans less than 30 days past due		9,485	[1]	9,371	[2]
Legacy | Trade finance
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		500
Total Delinquent loans		0		2,556
Nonaccrual loans less than 30 days past due		0	[1]	2,056	[2]
Legacy | Consumer and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		1,217		509
Total Delinquent loans		1,811		738
Nonaccrual loans less than 30 days past due		594	[1]	229	[2]
Acquired
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		3,116	[3]	5,064	[4]
Total Delinquent loans	[4]	9,361		16,194
Nonaccrual loans less than 30 days past due		6,245	[1],[3]	11,130	[2],[4]
Acquired | Commercial business
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		793	[3]	1,987	[4]
Total Delinquent loans		1,989	[3]	2,332	[4]
Nonaccrual loans less than 30 days past due		1,196	[1],[3]	345	[2],[4]
Acquired | Trade finance
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[3]	0	[4]
Total Delinquent loans		0	[3]	0	[4]
Nonaccrual loans less than 30 days past due		0	[1],[3]	0	[2],[4]
Acquired | Consumer and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[3]	356	[4]
Total Delinquent loans		594	[3]	905	[4]
Nonaccrual loans less than 30 days past due		594	[1],[3]	549	[2],[4]
30 to 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		10,286		10,268
30 to 59 Days Past Due | Legacy
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		8,857		6,253
30 to 59 Days Past Due | Legacy | Commercial business
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		2,660		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		243		146
30 to 59 Days Past Due | Acquired
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		1,429	[3]	4,015	[4]
30 to 59 Days Past Due | Acquired | Commercial business
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		627	[3]	1,303	[4]
30 to 59 Days Past Due | Acquired | Trade finance
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[3]	0	[4]
30 to 59 Days Past Due | Acquired | Consumer and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[3]	331	[4]
60 to 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		5,259		7,769
60 to 89 Days Past Due | Legacy
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		3,572		6,720
60 to 89 Days Past Due | Legacy | Commercial business
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		960		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		717		58
60 to 89 Days Past Due | Acquired
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		1,687	[3]	1,049	[4]
60 to 89 Days Past Due | Acquired | Commercial business
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		166	[3]	684	[4]
60 to 89 Days Past Due | Acquired | Trade finance
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[3]	0	[4]
60 to 89 Days Past Due | Acquired | Consumer and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[3]	25	[4]
90 or More Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		407		305
90 or More Days Past Due | Legacy
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		407		305
90 or More Days Past Due | Legacy | Commercial business
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		150		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		257		305
90 or More Days Past Due | Acquired
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[3]	0	[4]
90 or More Days Past Due | Acquired | Commercial business
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[3]	0	[4]
90 or More Days Past Due | Acquired | Trade finance
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[3]	0	[4]
90 or More Days Past Due | Acquired | Consumer and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[3]	0	[4]
Less than 30 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans less than 30 days past due		9,100		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		0	[1]	0	[2]
Residential | Acquired | Real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[3]	0	[4]
Total Delinquent loans		0	[3]	679	[4]
Nonaccrual loans less than 30 days past due		0	[1],[3]	679	[2],[4]
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	[3]	0	[4]
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	[3]	0	[4]
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	[3]	0	[4]
Commercial & industrial | Legacy | Real estate | Retail
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		1,168		480
Total Delinquent loans		4,427		4,152
Nonaccrual loans less than 30 days past due		3,259	[1]	3,672	[2]
Commercial & industrial | Legacy | Real estate | Hotel & motel
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		2,224		4,973
Total Delinquent loans		11,190		6,365
Nonaccrual loans less than 30 days past due		8,966	[1]	1,392	[2]
Commercial & industrial | Legacy | Real estate | Gas station & car wash
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		1,755		362
Total Delinquent loans		4,245		4,052
Nonaccrual loans less than 30 days past due		2,490	[1]	3,690	[2]
Commercial & industrial | Legacy | Real estate | Mixed use
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		161		0
Total Delinquent loans		1,357		1,305
Nonaccrual loans less than 30 days past due		1,196	[1]	1,305	[2]
Commercial & industrial | Legacy | Real estate | Industrial & warehouse
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		1,123		697
Total Delinquent loans		4,579		2,619
Nonaccrual loans less than 30 days past due		3,456	[1]	1,922	[2]
Commercial & industrial | Legacy | Real estate | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		1,418		2,871
Total Delinquent loans		7,750		6,878
Nonaccrual loans less than 30 days past due		6,332	[1]	4,007	[2]
Commercial & industrial | Acquired | Real estate | Retail
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		128	[3]	1,611	[4]
Total Delinquent loans		1,133	[3]	3,482	[4]
Nonaccrual loans less than 30 days past due		1,005	[1],[3]	1,871	[2],[4]
Commercial & industrial | Acquired | Real estate | Hotel & motel
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		1,521	[3]	95	[4]
Total Delinquent loans		2,142	[3]	4,596	[4]
Nonaccrual loans less than 30 days past due		621	[1],[3]	4,501	[2],[4]
Commercial & industrial | Acquired | Real estate | Gas station & car wash
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[3]	408	[4]
Total Delinquent loans		448	[3]	1,401	[4]
Nonaccrual loans less than 30 days past due		448	[1],[3]	993	[2],[4]
Commercial & industrial | Acquired | Real estate | Mixed use
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[3]	0	[4]
Total Delinquent loans		161	[3]	48	[4]
Nonaccrual loans less than 30 days past due		161	[1],[3]	48	[2],[4]
Commercial & industrial | Acquired | Real estate | Industrial & warehouse
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		338	[3]	257	[4]
Total Delinquent loans		740	[3]	257	[4]
Nonaccrual loans less than 30 days past due		402	[1],[3]	0	[2],[4]
Commercial & industrial | Acquired | Real estate | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		336	[3]	350	[4]
Total Delinquent loans		2,154	[3]	2,494	[4]
Nonaccrual loans less than 30 days past due		1,818	[1],[3]	2,144	[2],[4]
Commercial & industrial | 30 to 59 Days Past Due | Legacy | Real estate | Retail
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		1,168		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		329		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		1,755		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		161		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		1,123		0
Commercial & industrial | 30 to 59 Days Past Due | Legacy | Real estate | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		1,418		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		128	[3]	1,611	[4]
Commercial & industrial | 30 to 59 Days Past Due | Acquired | Real estate | Hotel & motel
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[3]	95	[4]
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	[3]	68	[4]
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	[3]	0	[4]
Commercial & industrial | 30 to 59 Days Past Due | Acquired | Real estate | Industrial & warehouse
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		338	[3]	257	[4]
Commercial & industrial | 30 to 59 Days Past Due | Acquired | Real estate | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		336	[3]	350	[4]
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		1,895		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		0		697
Commercial & industrial | 60 to 89 Days Past Due | Legacy | Real estate | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		0
Commercial & industrial | 60 to 89 Days Past Due | Acquired | Real estate | Retail
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[3]	0	[4]
Commercial & industrial | 60 to 89 Days Past Due | Acquired | Real estate | Hotel & motel
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		1,521	[3]	0	[4]
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	[3]	340	[4]
Commercial & industrial | 60 to 89 Days Past Due | Acquired | Real estate | Mixed use
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[3]	0	[4]
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	[3]	0	[4]
Commercial & industrial | 60 to 89 Days Past Due | Acquired | Real estate | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[3]	0	[4]
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	[3]	0	[4]
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	[3]	0	[4]
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	[3]	0	[4]
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	[3]	0	[4]
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	[3]	0	[4]
Commercial & industrial | 90 or More Days Past Due | Acquired | Real estate | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[3]	0	[4]
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		1,300	[1]	1,300	[2]
Construction | Acquired | Real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[3]	0	[4]
Total Delinquent loans		0	[3]	0	[4]
Nonaccrual loans less than 30 days past due		0	[1],[3]	0	[2],[4]
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	[3]	0	[4]
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	[3]	0	[4]
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	[3]	$ 0	[4]
[1]	Nonaccrual loans exclude guaranteed portion of delinquent SBA loans that are in liquidation totaling $21.5 million. Includes nonaccrual loans less than 30 days past due totaling $9.1 million.
[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.
[3]	Acquired Loans exclude PCI loans.
[4]	Acquired Loans exclude PCI loans.

Loans Receivable and Allowanc52

Loans Receivable and Allowance for Loan Losses - Financing Receivable Credit Quality Indicators (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment [Line Items]
Loans	$ 10,964,813	$ 10,544,989
Pass/Not Rated
Financing Receivable, Recorded Investment [Line Items]
Loans	10,391,475	9,988,278
Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	225,228	243,656
Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	346,607	311,106
Doubtful or Loss
Financing Receivable, Recorded Investment [Line Items]
Loans	1,503	1,949
Real estate
Financing Receivable, Recorded Investment [Line Items]
Loans	8,438,065	8,154,570
Real estate | Residential
Financing Receivable, Recorded Investment [Line Items]
Loans	55,072	57,884
Real estate | Commercial & industrial
Financing Receivable, Recorded Investment [Line Items]
Loans	8,085,307	7,842,573
Real estate | Construction
Financing Receivable, Recorded Investment [Line Items]
Loans	297,686	254,113
Commercial business
Financing Receivable, Recorded Investment [Line Items]
Loans	1,824,442	1,832,021
Trade finance
Financing Receivable, Recorded Investment [Line Items]
Loans	180,847	154,928
Consumer and other
Financing Receivable, Recorded Investment [Line Items]
Loans	521,459	403,470
Legacy
Financing Receivable, Recorded Investment [Line Items]
Loans	7,996,781	6,721,566
Legacy | Pass/Not Rated
Financing Receivable, Recorded Investment [Line Items]
Loans	7,666,788	6,430,967
Legacy | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	131,785	127,562
Legacy | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	197,992	162,942
Legacy | Doubtful or Loss
Financing Receivable, Recorded Investment [Line Items]
Loans	216	95
Legacy | Real estate
Financing Receivable, Recorded Investment [Line Items]
Loans	6,045,061	5,345,347
Legacy | Real estate | Residential
Financing Receivable, Recorded Investment [Line Items]
Loans	38,970	37,389
Legacy | Real estate | Residential | Pass/Not Rated
Financing Receivable, Recorded Investment [Line Items]
Loans	36,488	34,283
Legacy | Real estate | Residential | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	1,035	223
Legacy | Real estate | Residential | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	1,447	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	1,611,821	1,337,811
Legacy | Real estate | Commercial & industrial | Retail | Pass/Not Rated
Financing Receivable, Recorded Investment [Line Items]
Loans	1,569,248	1,303,452
Legacy | Real estate | Commercial & industrial | Retail | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	23,225	18,929
Legacy | Real estate | Commercial & industrial | Retail | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	19,348	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	1,217,499	1,209,498
Legacy | Real estate | Commercial & industrial | Hotel & motel | Pass/Not Rated
Financing Receivable, Recorded Investment [Line Items]
Loans	1,194,329	1,187,709
Legacy | Real estate | Commercial & industrial | Hotel & motel | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	10,042	12,763
Legacy | Real estate | Commercial & industrial | Hotel & motel | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	13,128	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	746,159	654,231
Legacy | Real estate | Commercial & industrial | Gas station & car wash | Pass/Not Rated
Financing Receivable, Recorded Investment [Line Items]
Loans	729,531	643,282
Legacy | Real estate | Commercial & industrial | Gas station & car wash | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	12,382	7,259
Legacy | Real estate | Commercial & industrial | Gas station & car wash | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	4,246	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	406,230	376,779
Legacy | Real estate | Commercial & industrial | Mixed use | Pass/Not Rated
Financing Receivable, Recorded Investment [Line Items]
Loans	400,074	375,312
Legacy | Real estate | Commercial & industrial | Mixed use | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	4,612	0
Legacy | Real estate | Commercial & industrial | Mixed use | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	1,544	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	606,203	522,103
Legacy | Real estate | Commercial & industrial | Industrial & warehouse | Pass/Not Rated
Financing Receivable, Recorded Investment [Line Items]
Loans	568,172	478,528
Legacy | Real estate | Commercial & industrial | Industrial & warehouse | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	15,999	29,830
Legacy | Real estate | Commercial & industrial | Industrial & warehouse | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	22,032	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	1,205,077	1,032,261
Legacy | Real estate | Commercial & industrial | Other | Pass/Not Rated
Financing Receivable, Recorded Investment [Line Items]
Loans	1,125,919	969,024
Legacy | Real estate | Commercial & industrial | Other | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	29,111	22,220
Legacy | Real estate | Commercial & industrial | Other | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	50,047	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	213,102	175,275
Legacy | Real estate | Construction | Pass/Not Rated
Financing Receivable, Recorded Investment [Line Items]
Loans	210,134	159,230
Legacy | Real estate | Construction | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	0	14,745
Legacy | Real estate | Construction | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	2,968	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	1,472,892	1,114,131
Legacy | Commercial business | Pass/Not Rated
Financing Receivable, Recorded Investment [Line Items]
Loans	1,358,444	1,032,232
Legacy | Commercial business | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	33,068	15,919
Legacy | Commercial business | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	81,164	65,885
Legacy | Commercial business | Doubtful or Loss
Financing Receivable, Recorded Investment [Line Items]
Loans	216	95
Legacy | Trade finance
Financing Receivable, Recorded Investment [Line Items]
Loans	137,800	81,394
Legacy | Trade finance | Pass/Not Rated
Financing Receivable, Recorded Investment [Line Items]
Loans	134,262	68,051
Legacy | Trade finance | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	2,311	5,673
Legacy | Trade finance | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	1,227	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	341,028	180,694
Legacy | Consumer and other | Pass/Not Rated
Financing Receivable, Recorded Investment [Line Items]
Loans	340,187	179,864
Legacy | Consumer and other | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	0	1
Legacy | Consumer and other | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	841	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	2,968,032	3,823,423
Acquired | Pass/Not Rated
Financing Receivable, Recorded Investment [Line Items]
Loans	2,724,687	3,557,311
Acquired | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	93,443	116,094
Acquired | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	148,615	148,164
Acquired | Doubtful or Loss
Financing Receivable, Recorded Investment [Line Items]
Loans	1,287	1,854
Acquired | Real estate
Financing Receivable, Recorded Investment [Line Items]
Loans	2,393,004	2,809,223
Acquired | Real estate | Residential
Financing Receivable, Recorded Investment [Line Items]
Loans	16,102	20,495
Acquired | Real estate | Residential | Pass/Not Rated
Financing Receivable, Recorded Investment [Line Items]
Loans	15,837	18,007
Acquired | Real estate | Residential | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	265	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	680,189	803,435
Acquired | Real estate | Commercial & industrial | Retail | Pass/Not Rated
Financing Receivable, Recorded Investment [Line Items]
Loans	649,572	772,465
Acquired | Real estate | Commercial & industrial | Retail | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	8,974	9,860
Acquired | Real estate | Commercial & industrial | Retail | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	21,643	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	315,253	352,048
Acquired | Real estate | Commercial & industrial | Hotel & motel | Pass/Not Rated
Financing Receivable, Recorded Investment [Line Items]
Loans	285,539	328,396
Acquired | Real estate | Commercial & industrial | Hotel & motel | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	9,289	5,419
Acquired | Real estate | Commercial & industrial | Hotel & motel | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	20,423	18,233
Acquired | Real estate | Commercial & industrial | Hotel & motel | Doubtful or Loss
Financing Receivable, Recorded Investment [Line Items]
Loans	2	0
Acquired | Real estate | Commercial & industrial | Gas station & car wash
Financing Receivable, Recorded Investment [Line Items]
Loans	216,282	269,154
Acquired | Real estate | Commercial & industrial | Gas station & car wash | Pass/Not Rated
Financing Receivable, Recorded Investment [Line Items]
Loans	198,481	249,379
Acquired | Real estate | Commercial & industrial | Gas station & car wash | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	8,973	8,437
Acquired | Real estate | Commercial & industrial | Gas station & car wash | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	8,828	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	119,223	134,261
Acquired | Real estate | Commercial & industrial | Mixed use | Pass/Not Rated
Financing Receivable, Recorded Investment [Line Items]
Loans	99,250	118,643
Acquired | Real estate | Commercial & industrial | Mixed use | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	5,648	3,105
Acquired | Real estate | Commercial & industrial | Mixed use | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	14,317	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	298,239	362,222
Acquired | Real estate | Commercial & industrial | Industrial & warehouse | Pass/Not Rated
Financing Receivable, Recorded Investment [Line Items]
Loans	266,876	321,040
Acquired | Real estate | Commercial & industrial | Industrial & warehouse | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	15,185	31,819
Acquired | Real estate | Commercial & industrial | Industrial & warehouse | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	15,908	9,048
Acquired | Real estate | Commercial & industrial | Industrial & warehouse | Doubtful or Loss
Financing Receivable, Recorded Investment [Line Items]
Loans	270	315
Acquired | Real estate | Commercial & industrial | Other
Financing Receivable, Recorded Investment [Line Items]
Loans	663,132	788,770
Acquired | Real estate | Commercial & industrial | Other | Pass/Not Rated
Financing Receivable, Recorded Investment [Line Items]
Loans	600,411	736,385
Acquired | Real estate | Commercial & industrial | Other | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	36,607	23,286
Acquired | Real estate | Commercial & industrial | Other | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	26,114	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	84,584	78,838
Acquired | Real estate | Construction | Pass/Not Rated
Financing Receivable, Recorded Investment [Line Items]
Loans	84,584	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	351,550	717,890
Acquired | Commercial business | Pass/Not Rated
Financing Receivable, Recorded Investment [Line Items]
Loans	310,220	649,186
Acquired | Commercial business | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	7,782	31,340
Acquired | Commercial business | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	33,528	37,265
Acquired | Commercial business | Doubtful or Loss
Financing Receivable, Recorded Investment [Line Items]
Loans	20	99
Acquired | Trade finance
Financing Receivable, Recorded Investment [Line Items]
Loans	43,047	73,534
Acquired | Trade finance | Pass/Not Rated
Financing Receivable, Recorded Investment [Line Items]
Loans	39,663	70,535
Acquired | Trade finance | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	0	61
Acquired | Trade finance | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	3,384	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	180,431	222,776
Acquired | Consumer and other | Pass/Not Rated
Financing Receivable, Recorded Investment [Line Items]
Loans	174,254	214,437
Acquired | Consumer and other | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	720	958
Acquired | Consumer and other | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	4,470	5,949
Acquired | Consumer and other | Doubtful or Loss
Financing Receivable, Recorded Investment [Line Items]
Loans	$ 987	$ 1,432

Loans Receivable and Allowanc53

Loans Receivable and Allowance for Loan Losses - Loans Held For Investment - Reclassification to Held for Sale (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Sale or reclassification to held for sale	$ 0	$ 992	$ 429	$ 1,392
Commercial & industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Sale or reclassification to held for sale	0	992	429	992
Commercial Business
Accounts, Notes, Loans and Financing Receivable [Line Items]
Sale or reclassification to held for sale	0	0	0	0
Consumer and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Sale or reclassification to held for sale	$ 0	$ 0	$ 0	$ 400

Loans Receivable and Allowanc54

Loans Receivable and Allowance for Loan Losses - Allowance for Loans, by Portfolio Segment and Impairment Method (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Mar. 31, 2016	Dec. 31, 2015
Loans by Portfolio Segment and Impairment Method [Abstract]
Impaired loans (gross carrying value)	$ 108,460		$ 140,361
Specific allowance	$ 6,807		$ 7,409
Loss coverage ratio	6.28%		5.28%
Non-impaired loans	$ 10,856,353		$ 10,404,628
General allowance	$ 76,826		$ 71,934
Loss coverage ratio	0.71%		0.69%
Total loans outstanding	$ 10,964,813		$ 10,544,989
Allowance for loan losses - Total	$ 83,633	$ 80,074	$ 79,343	$ 79,976	$ 76,425	$ 76,408
Loss coverage ratio	0.76%		0.75%
Real estate
Loans by Portfolio Segment and Impairment Method [Abstract]
Total loans outstanding	$ 8,438,065		$ 8,154,570
Real estate | Residential
Loans by Portfolio Segment and Impairment Method [Abstract]
Impaired loans (gross carrying value)	498		3,562
Specific allowance	0		0
Non-impaired loans	54,574		54,322
General allowance	$ 161		$ 209
Loss coverage ratio	0.30%		0.38%
Total loans outstanding	$ 55,072		$ 57,884
Allowance for loan losses - Total	$ 161		$ 209
Loss coverage ratio	0.29%		0.36%
Real estate | Commercial & industrial
Loans by Portfolio Segment and Impairment Method [Abstract]
Impaired loans (gross carrying value)	$ 56,892		$ 93,088
Specific allowance	$ 1,707		$ 2,002
Loss coverage ratio	3.00%		2.15%
Non-impaired loans	$ 8,028,415		$ 7,749,485
General allowance	$ 52,573		$ 47,915
Loss coverage ratio	0.65%		0.62%
Total loans outstanding	$ 8,085,307		$ 7,842,573
Allowance for loan losses - Total	$ 54,280		$ 49,917
Loss coverage ratio	0.67%		0.64%
Real estate | Construction
Loans by Portfolio Segment and Impairment Method [Abstract]
Impaired loans (gross carrying value)	$ 1,300		$ 1,300
Specific allowance	0		0
Non-impaired loans	296,386		252,813
General allowance	$ 1,486		$ 1,621
Loss coverage ratio	0.50%		0.64%
Total loans outstanding	$ 297,686		$ 254,113
Allowance for loan losses - Total	$ 1,486		$ 1,621
Loss coverage ratio	0.50%		0.64%
Commercial business
Loans by Portfolio Segment and Impairment Method [Abstract]
Impaired loans (gross carrying value)	$ 40,379		$ 35,218
Specific allowance	$ 5,094		$ 4,493
Loss coverage ratio	12.62%		12.76%
Non-impaired loans	$ 1,784,063		$ 1,796,803
General allowance	$ 18,290		$ 19,054
Loss coverage ratio	1.03%		1.06%
Total loans outstanding	$ 1,824,442		$ 1,832,021
Allowance for loan losses - Total	$ 23,384		$ 23,547
Loss coverage ratio	1.28%		1.29%
Trade finance
Loans by Portfolio Segment and Impairment Method [Abstract]
Impaired loans (gross carrying value)	$ 7,585		$ 6,029
Specific allowance	$ 2		$ 864
Loss coverage ratio	0.03%		14.33%
Non-impaired loans	$ 173,262		$ 148,899
General allowance	$ 1,580		$ 1,033
Loss coverage ratio	0.91%		0.69%
Total loans outstanding	$ 180,847		$ 154,928
Allowance for loan losses - Total	$ 1,582		$ 1,897
Loss coverage ratio	0.87%		1.22%
Consumer and other
Loans by Portfolio Segment and Impairment Method [Abstract]
Impaired loans (gross carrying value)	$ 1,806		$ 1,164
Specific allowance	$ 4		$ 50
Loss coverage ratio	0.22%		4.30%
Non-impaired loans	$ 519,653		$ 402,306
General allowance	$ 2,736		$ 2,102
Loss coverage ratio	0.53%		0.52%
Total loans outstanding	$ 521,459		$ 403,470
Allowance for loan losses - Total	$ 2,740		$ 2,152
Loss coverage ratio	0.53%		0.53%
Acquired
Loans by Portfolio Segment and Impairment Method [Abstract]
Specific allowance	$ 660		$ 186
Total loans outstanding	2,968,032		3,823,423
Acquired | Real estate
Loans by Portfolio Segment and Impairment Method [Abstract]
Total loans outstanding	2,393,004		2,809,223
Allowance for loan losses - Total	11,937	13,411	12,791	12,707	12,607	12,823
Acquired | Real estate | Residential
Loans by Portfolio Segment and Impairment Method [Abstract]
Specific allowance	0		0
Total loans outstanding	16,102		20,495
Acquired | Real estate | Construction
Loans by Portfolio Segment and Impairment Method [Abstract]
Specific allowance	0		0
Total loans outstanding	84,584		78,838
Acquired | Commercial business
Loans by Portfolio Segment and Impairment Method [Abstract]
Specific allowance	415		73
Total loans outstanding	351,550		717,890
Allowance for loan losses - Total	1,240	1,291	117	237	148	214
Acquired | Trade finance
Loans by Portfolio Segment and Impairment Method [Abstract]
Specific allowance	0		0
Total loans outstanding	43,047		73,534
Allowance for loan losses - Total	162	106	0	0	0	0
Acquired | Consumer and other
Loans by Portfolio Segment and Impairment Method [Abstract]
Specific allowance	0		0
Total loans outstanding	180,431		222,776
Allowance for loan losses - Total	$ 12	$ 11	$ 36	$ 47	$ 53	$ 62

Loans Receivable and Allowanc55

Loans Receivable and Allowance for Loan Losses - Troubled Debt Restructurings on Financing Receivables (Details) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2017USD ($)loan	Sep. 30, 2016USD ($)loan	Sep. 30, 2017USD ($)loan	Sep. 30, 2016USD ($)loan	Dec. 31, 2016USD ($)loan
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	$ 75,704		$ 75,704		$ 70,870
Number of modified contracts | loan	16	9	25	20
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 14,754	$ 2,599	$ 22,707	$ 16,028
Post-Modification	$ 14,887	$ 2,600	$ 22,171	$ 12,030
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	2	7	2	10
Balance	$ 827	$ 4,322	$ 827	$ 7,700
Payment concession
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	20,415		20,415		22,521
Troubled Debt Restructuring Concession, Type, Maturity/ Amortization Concession [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	44,588		44,588		33,641
Rate concession
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	10,701		10,701		14,708
TDR on accrual
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	64,807		64,807		48,874
TDR on accrual | Payment concession
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	18,448		18,448		16,387
TDR on accrual | Troubled Debt Restructuring Concession, Type, Maturity/ Amortization Concession [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	36,787		36,787		23,911
TDR on accrual | Rate concession
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	9,572		9,572		8,576
TDR on non-accrual
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	10,897		10,897		21,996
TDR on non-accrual | Payment concession
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	1,967		1,967		6,134
TDR on non-accrual | Troubled Debt Restructuring Concession, Type, Maturity/ Amortization Concession [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	7,801		7,801		9,730
TDR on non-accrual | Rate concession
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	1,129		$ 1,129		6,132
Commercial & industrial | TDR on accrual
Financing Receivable, Modifications [Line Items]
Troubled debt restructured					$ 25,100
Number of modified contracts | loan			22		20
Real estate | Commercial & industrial | TDR on accrual
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	26,908		$ 26,908		$ 25,054
Real estate | Commercial & industrial | TDR on accrual | Payment concession
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	18,014		18,014		16,358
Real estate | Commercial & industrial | TDR on accrual | Troubled Debt Restructuring Concession, Type, Maturity/ Amortization Concession [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	3,397		3,397		1,840
Real estate | Commercial & industrial | TDR on accrual | Rate concession
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	5,497		5,497		6,856
Real estate | Commercial & industrial | TDR on non-accrual
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	5,010		5,010		11,320
Real estate | Commercial & industrial | TDR on non-accrual | Payment concession
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	1,817		1,817		4,417
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	2,084		2,084		1,313
Real estate | Commercial & industrial | TDR on non-accrual | Rate concession
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	1,109		1,109		5,590
Commercial business | TDR on accrual
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	29,696		$ 29,696		$ 19,165
Number of modified contracts | loan			26		23
Commercial business | TDR on accrual | Payment concession
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	434		$ 434		$ 29
Commercial business | TDR on accrual | Troubled Debt Restructuring Concession, Type, Maturity/ Amortization Concession [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	25,187		25,187		17,471
Commercial business | TDR on accrual | Rate concession
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	4,075		4,075		1,665
Commercial business | TDR on non-accrual
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	5,564		5,564		8,234
Commercial business | TDR on non-accrual | Payment concession
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	150		150		1,717
Commercial business | TDR on non-accrual | Troubled Debt Restructuring Concession, Type, Maturity/ Amortization Concession [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	5,394		5,394		6,130
Commercial business | TDR on non-accrual | Rate concession
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	20		20		387
Trade Finance and Other | TDR on accrual
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	8,203		8,203		4,655
Trade Finance and Other | TDR on accrual | Payment concession
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	0		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	8,203		8,203		4,600
Trade Finance and Other | TDR on accrual | Rate concession
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	0		0		55
Trade Finance and Other | TDR on non-accrual
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	323		323		2,442
Trade Finance and Other | TDR on non-accrual | Payment concession
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	0		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	323		323		2,287
Trade Finance and Other | TDR on non-accrual | Rate concession
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	0		0		155
Consumer and other | TDR on accrual
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	$ 8,200		$ 8,200		$ 4,700
Number of modified contracts | loan			6		19
Legacy
Financing Receivable, Modifications [Line Items]
Number of modified contracts | loan	8	5	14	15
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 5,873	$ 1,110	$ 13,405	$ 14,509
Post-Modification	$ 5,205	$ 1,150	$ 12,118	$ 10,554
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	2	6	2	9
Balance	$ 827	$ 4,296	$ 827	$ 7,674
Legacy | Real estate
Financing Receivable, Modifications [Line Items]
Number of modified contracts | loan	0	0	0	0
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 0	$ 0	$ 0	$ 0
Post-Modification	$ 0	$ 0	$ 0	$ 0
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0	0	0	0
Balance	$ 0	$ 0	$ 0	$ 0
Legacy | Real estate | Retail
Financing Receivable, Modifications [Line Items]
Number of modified contracts | loan	1	0	2	0
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 464	$ 0	$ 1,123	$ 0
Post-Modification	$ 452	$ 0	$ 1,091	$ 0
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0	0	0	0
Balance	$ 0	$ 0	$ 0	$ 0
Legacy | Real estate | Hotel & motel
Financing Receivable, Modifications [Line Items]
Number of modified contracts | loan	0	0	0	0
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 0	$ 0	$ 0	$ 0
Post-Modification	$ 0	$ 0	$ 0	$ 0
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0	0	0	0
Balance	$ 0	$ 0	$ 0	$ 0
Legacy | Real estate | Gas station & car wash
Financing Receivable, Modifications [Line Items]
Number of modified contracts | loan	0	0	0	0
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 0	$ 0	$ 0	$ 0
Post-Modification	$ 0	$ 0	$ 0	$ 0
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0	0	0	0
Balance	$ 0	$ 0	$ 0	$ 0
Legacy | Real estate | Mixed use
Financing Receivable, Modifications [Line Items]
Number of modified contracts | loan	0	0	0	0
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 0	$ 0	$ 0	$ 0
Post-Modification	$ 0	$ 0	$ 0	$ 0
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0	0	0	0
Balance	$ 0	$ 0	$ 0	$ 0
Legacy | Real estate | Industrial & warehouse
Financing Receivable, Modifications [Line Items]
Number of modified contracts | loan	0	0	0	0
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 0	$ 0	$ 0	$ 0
Post-Modification	$ 0	$ 0	$ 0	$ 0
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0	0	0	0
Balance	$ 0	$ 0	$ 0	$ 0
Legacy | Real estate | Other
Financing Receivable, Modifications [Line Items]
Number of modified contracts | loan	0	1	0	1
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 0	$ 845	$ 0	$ 845
Post-Modification	$ 0	$ 836	$ 0	$ 836
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0	0	0	0
Balance	$ 0	$ 0	$ 0	$ 0
Legacy | Real estate | Residential Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Number of modified contracts | loan	0	0	0	0
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 0	$ 0	$ 0	$ 0
Post-Modification	$ 0	$ 0	$ 0	$ 0
Legacy | Commercial business
Financing Receivable, Modifications [Line Items]
Number of modified contracts | loan	7	4	12	12
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 5,409	$ 265	$ 12,282	$ 11,465
Post-Modification	$ 4,753	$ 314	$ 11,027	$ 8,178
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	2	6	2	8
Balance	$ 827	$ 4,296	$ 827	$ 4,496
Legacy | Commercial business | Payment concession
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan		3		4
Balance		$ 401		$ 401
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 | loan	2	3		4
Balance	$ 827	$ 4,100		$ 4,100
Legacy | Trade finance
Financing Receivable, Modifications [Line Items]
Number of modified contracts | loan	0	0	0	1
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 0	$ 0	$ 0	$ 2,199
Post-Modification	$ 0	$ 0	$ 0	$ 1,439
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0	0	0	1
Balance	$ 0	$ 0	$ 0	$ 3,178
Legacy | Trade finance | Troubled Debt Restructuring Concession, Type, Maturity/ Amortization Concession [Member]
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan				1
Balance				$ 3,200
Legacy | Consumer and other Acquired Loans
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0	0	0	0
Balance	$ 0	$ 0	$ 0	$ 0
Legacy | Consumer and other
Financing Receivable, Modifications [Line Items]
Number of modified contracts | loan	0	0	0	1
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 0	$ 0	$ 0	$ 0
Post-Modification	$ 0	$ 0	$ 0	$ 101
Acquired
Financing Receivable, Modifications [Line Items]
Number of modified contracts | loan	8	4	11	5
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 8,881	$ 1,489	$ 9,302	$ 1,519
Post-Modification	$ 9,682	$ 1,450	$ 10,053	$ 1,476
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0	1	0	1
Balance	$ 0	$ 26	$ 0	$ 26
Acquired | Real estate
Financing Receivable, Modifications [Line Items]
Number of modified contracts | loan	0	0	0	0
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 0	$ 0	$ 0	$ 0
Post-Modification	$ 0	$ 0	$ 0	$ 0
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0	0	0	0
Balance	$ 0	$ 0	$ 0	$ 0
Acquired | Real estate | Retail
Financing Receivable, Modifications [Line Items]
Number of modified contracts | loan	0	1	2	1
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 0	$ 1,377	$ 221	$ 1,377
Post-Modification	$ 0	$ 1,344	$ 218	$ 1,344
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0	0	0	0
Balance	$ 0	$ 0	$ 0	$ 0
Acquired | Real estate | Hotel & motel
Financing Receivable, Modifications [Line Items]
Number of modified contracts | loan	0	0	0	0
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 0	$ 0	$ 0	$ 0
Post-Modification	$ 0	$ 0	$ 0	$ 0
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0	0	0	0
Balance	$ 0	$ 0	$ 0	$ 0
Acquired | Real estate | Gas station & car wash
Financing Receivable, Modifications [Line Items]
Number of modified contracts | loan	0	0	0	0
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 0	$ 0	$ 0	$ 0
Post-Modification	$ 0	$ 0	$ 0	$ 0
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0	0	0	0
Balance	$ 0	$ 0	$ 0	$ 0
Acquired | Real estate | Mixed use
Financing Receivable, Modifications [Line Items]
Number of modified contracts | loan	0	0	0	0
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 0	$ 0	$ 0	$ 0
Post-Modification	$ 0	$ 0	$ 0	$ 0
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0	0	0	0
Balance	$ 0	$ 0	$ 0	$ 0
Acquired | Real estate | Industrial & warehouse
Financing Receivable, Modifications [Line Items]
Number of modified contracts | loan	0	0	0	0
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 0	$ 0	$ 0	$ 0
Post-Modification	$ 0	$ 0	$ 0	$ 0
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0	0	0	0
Balance	$ 0	$ 0	$ 0	$ 0
Acquired | Real estate | Other
Financing Receivable, Modifications [Line Items]
Number of modified contracts | loan	1	1	1	1
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 851	$ 81	$ 851	$ 81
Post-Modification	$ 2,265	$ 79	$ 2,265	$ 79
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0	0	0	0
Balance	$ 0	$ 0	$ 0	$ 0
Acquired | Real estate | Residential Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Number of modified contracts | loan	1	0	1	0
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 614	$ 0	$ 614	$ 0
Post-Modification	$ 498	$ 0	$ 498	$ 0
Acquired | Commercial business
Financing Receivable, Modifications [Line Items]
Number of modified contracts | loan	5	2	6	2
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 4,478	$ 31	$ 4,678	$ 31
Post-Modification	$ 3,535	$ 27	$ 3,688	$ 27
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0	0	0	0
Balance	$ 0	$ 0	$ 0	$ 0
Acquired | Trade finance
Financing Receivable, Modifications [Line Items]
Number of modified contracts | loan	1	0	1	0
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 2,938	$ 0	$ 2,938	$ 0
Post-Modification	$ 3,384	$ 0	$ 3,384	$ 0
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0	0	0	0
Balance	$ 0	$ 0	$ 0	$ 0
Acquired | Consumer and other Acquired Loans
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0	1	0	1
Balance	$ 0	$ 26	$ 0	$ 26
Acquired | Consumer and other Acquired Loans | Troubled Debt Restructuring Concession, Type, Maturity/ Amortization Concession [Member]
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan		1		1
Balance		$ 26		$ 26
Acquired | Consumer and other
Financing Receivable, Modifications [Line Items]
Number of modified contracts | loan	0	0	0	1
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 0	$ 0	$ 0	$ 30
Post-Modification	$ 0	$ 0	$ 0	$ 26

Loans Receivable and Allowanc56

Loans Receivable and Allowance for Loan Losses - Additional Information (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2017USD ($)loan	Sep. 30, 2016USD ($)loan	Sep. 30, 2017USD ($)loan	Sep. 30, 2016USD ($)loan	Dec. 31, 2016USD ($)
Financing Receivable, Allowance for Credit Losses [Line Items]
Specific reserves TDRs	$ 4,100,000		$ 4,100,000		$ 5,300,000
Specific reserves for the TDRs that had payment defaults	$ 0	$ 1,000,000		$ 2,400,000
Positive or negative qualitative adjustment of the Loss Migration Ratio	0.50%		0.50%
Provision for loan losses	$ 5,400,000	$ 6,500,000	$ 13,760,000	$ 8,200,000
Number of Loans | loan	2	7	2	10
Balance	$ 827,000	$ 4,322,000	$ 827,000	$ 7,700,000
Commitment to lend	836,000		836,000		$ 3,200,000
Recognized provision for credit losses related to unfunded commitments	(2,800,000)	270,000	(2,400,000)	(191,000)
Specific reserves	376,000	183,000	1,300,000	2,900,000
Charge offs		$ 85,000	203,000	$ 115,000
Acquired
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for PCI loan losses	610,000		1,500,000
Provision for loan losses	$ 845,000		$ 1,300,000
Number of Loans | loan	0	1	0	1
Balance	$ 0	$ 26,000	$ 0	$ 26,000
Charge offs	$ 0	$ 0
Legacy
Financing Receivable, Allowance for Credit Losses [Line Items]
Number of Loans | loan	2	6	2	9
Balance	$ 827,000	$ 4,296,000	$ 827,000	$ 7,674,000
Commercial business | Acquired
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for loan losses	$ 395,000	$ 72,000	$ 1,517,000	$ (82,000)
Number of Loans | loan	0	0	0	0
Balance	$ 0	$ 0	$ 0	$ 0
Commercial business | Legacy
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for loan losses	$ 1,499,000	$ 7,444,000	$ 2,356,000	$ 9,792,000
Number of Loans | loan	2	6	2	8
Balance	$ 827,000	$ 4,296,000	$ 827,000	$ 4,496,000
Commercial business | Troubled Debt Restructuring Concession, Type, Maturity/ Amortization Concession [Member] | Legacy
Financing Receivable, Allowance for Credit Losses [Line Items]
Number of Loans | loan	2	3		4
Balance	$ 827,000	$ 4,100,000		$ 4,100,000
Commercial business | Payment concession | Legacy
Financing Receivable, Allowance for Credit Losses [Line Items]
Number of Loans | loan		3		4
Balance		$ 401,000		$ 401,000
Consumer and other Acquired Loans | Acquired
Financing Receivable, Allowance for Credit Losses [Line Items]
Number of Loans | loan	0	1	0	1
Balance	$ 0	$ 26,000	$ 0	$ 26,000
Consumer and other Acquired Loans | Legacy
Financing Receivable, Allowance for Credit Losses [Line Items]
Number of Loans | loan	0	0	0	0
Balance	$ 0	$ 0	$ 0	$ 0
Consumer and other Acquired Loans | Troubled Debt Restructuring Concession, Type, Maturity/ Amortization Concession [Member] | Acquired
Financing Receivable, Allowance for Credit Losses [Line Items]
Number of Loans | loan		1		1
Balance		$ 26,000		$ 26,000

Deposits (Details)

Deposits (Details) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Deposits Disclosure [Line Items]
Time Deposits, $250,000 or More	$ 1,620	$ 1,550
California State Treasurer
Deposits Disclosure [Line Items]
Time Deposits, $250,000 or More	300
Available-for-sale Securities Pledged as Collateral	330.3	371.6
Interest-bearing Domestic Deposit, Brokered	808.4	724.7
Money market and NOW accounts | California State Treasurer
Deposits Disclosure [Line Items]
Interest-bearing Domestic Deposit, Brokered	289.4	303.7
Time deposits | California State Treasurer
Deposits Disclosure [Line Items]
Interest-bearing Domestic Deposit, Brokered	$ 519	$ 421

Borrowings - Maturities of FHLB

Borrowings - Maturities of FHLB Borrowings (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Extinguishment of Debt [Line Items]
Total	$ 1,018,046	$ 754,290
Contractual Maturities
Extinguishment of Debt [Line Items]
Due within one year	480,000
Due after one year through five years	538,046
Total	1,018,046
Maturity/Put Date
Extinguishment of Debt [Line Items]
Due within one year	480,000
Due after one year through five years	538,046
Total	$ 1,018,046

Borrowings - Narrative (Details

Borrowings - Narrative (Details) - USD ($)	Sep. 30, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Percent of assets	25.00%
Maximum borrowing capacity	$ 3,340,000,000	$ 3,380,000,000
Percent outstanding advances	100.00%
FHLB advances	$ 1,018,046,000	754,290,000
Unused funds	$ 2,320,000,000
Percent of qualifying assets	95.00%
Putable
Debt Instrument [Line Items]
FHLB advances		$ 20,200,000
Weighted Average
Debt Instrument [Line Items]
FHLB advances, interest rate	1.31%	1.22%
Minimum
Debt Instrument [Line Items]
FHLB advances, interest rate	0.88%
Maximum
Debt Instrument [Line Items]
FHLB advances, interest rate	2.02%
Mortgage Loans on Real Estate
Debt Instrument [Line Items]
Pledged as collateral	$ 4,850,000,000	$ 5,530,000,000
Qualifying Loans
Debt Instrument [Line Items]
Asset balance used to determine maximum borrowing capacity from federal reserve bank	549,300,000
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 ($)	Sep. 30, 2017	Dec. 31, 2016
Subordinated Borrowing [Line Items]
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	$ 100,590,000
Nara Capital Trust III
Subordinated Borrowing [Line Items]
Initial Rate	4.47%
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	4.15%
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	4.27%
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	2.97%
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	4.15%
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	$ 13,778,000
Wilshire Statutory Trust III [Member]
Subordinated Borrowing [Line Items]
Initial Rate	3.11%
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	$ 15,262,000
Wilshire Statutory Trust III [Member]
Subordinated Borrowing [Line Items]
Initial Rate	2.72%
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	$ 10,723,000
Wilshire Statutory Trust IV [Member]
Subordinated Borrowing [Line Items]
Initial Rate	2.70%
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	$ 17,411,000
Saehan Capital Trust I [Member]
Subordinated Borrowing [Line Items]
Initial Rate	2.96%
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	$ 14,548,000

Subordinated Debentures - Narra

Subordinated Debentures - Narrative (Details) - USD ($)	9 Months Ended
	Sep. 30, 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 Instrume62

Derivative Financial Instruments (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Liability, Notional Amount	$ 279,786	$ 223,098
Derivative, Average Remaining Maturity	7 years 5 months 30 days	7 years 5 months
Interest Rate Lock Commitments [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount	$ 83,705	$ 23,749
Derivative Asset, Notional Amount	10,734	11,168
Derivative Liability, Notional Amount	777	1,810
Interest Rate Swap [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Asset, Notional Amount	$ 279,786	$ 223,098
Individual Counterparty [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Fixed Interest Rate	4.35%	4.29%
Derivative, Variable Interest Rate	3.59%	3.06%
Derivative, Fair Value, Net	$ (175)	$ (1,565)
Corporation [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Fixed Interest Rate	4.35%	4.29%
Derivative, Variable Interest Rate	3.59%	3.06%
Derivative, Fair Value, Net	$ 175	$ 1,565
Short [Member] | Forward Contracts [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount	11,511	12,978
Derivative Asset, Notional Amount	6,966	3,223
Derivative Liability, Notional Amount	$ 4,545	$ 9,755

Derivative Financial Instrume63

Derivative Financial Instruments - Summary of Derivative Notional Amounts and Fair Values (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Derivative [Line Items]
Derivative Liability, Notional Amount	$ 279,786	$ 223,098
Interest Rate Lock Commitments [Member]
Derivative [Line Items]
Derivative, Notional Amount	83,705	23,749
Derivative Asset, Notional Amount	10,734	11,168
Derivative Asset, Fair Value	60	130
Derivative Liability, Notional Amount	777	1,810
Derivative Liability, Fair Value	2	3
Forward Contracts [Member] | Short [Member]
Derivative [Line Items]
Derivative, Notional Amount	11,511	12,978
Derivative Asset, Notional Amount	6,966	3,223
Derivative Asset, Fair Value	24	17
Derivative Liability, Notional Amount	4,545	9,755
Derivative Liability, Fair Value	$ 23	$ 38

Commitments and contingencies (

Commitments and contingencies (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Supply Commitment [Line Items]
Operating Leases, Future Minimum Payments Due, Next Twelve Months	$ 53,042	$ 51,059
Loss Contingency Accrual	428	557
Interest Rate Lock Commitments [Member]
Supply Commitment [Line Items]
Derivative, Notional Amount	83,705	23,749
Short [Member] | Forward Contracts [Member]
Supply Commitment [Line Items]
Derivative, Notional Amount	11,511	12,978
Commitments to Extend Credit [Member]
Supply Commitment [Line Items]
Supply Commitment, Remaining Minimum Amount Committed	1,571,460	1,592,221
Standby Letters of Credit [Member]
Supply Commitment [Line Items]
Supply Commitment, Remaining Minimum Amount Committed	68,358	63,753
Letter of Credit [Member]
Supply Commitment [Line Items]
Supply Commitment, Remaining Minimum Amount Committed	60,036	52,125
Low Income Housing Tax Credit [Member]
Supply Commitment [Line Items]
Supply Commitment, Remaining Minimum Amount Committed	$ 42,433	$ 24,409

Goodwill, Intangible Assets, 65

Goodwill, Intangible Assets, and Servicing Assets - Intangible Assets (Details) - USD ($)	3 Months Ended				9 Months Ended
	Sep. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Jul. 29, 2016
Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 464,450,000		$ 462,997,000		$ 464,450,000
Goodwill impairment	0				0
Gross Carrying Amount	25,604,000				25,604,000
Accumulated Amortization	(8,406,000)				(8,406,000)
Core Deposits
Finite-Lived Intangible Assets [Line Items]
Amortization expense related to core deposit intangible qssets	676,000			$ 565,000	$ 2,000,000	$ 990,000
Center Financial Corporation | Core Deposits
Finite-Lived Intangible Assets [Line Items]
Amortization Period					7 years
Gross Carrying Amount	4,100,000				$ 4,100,000
Accumulated Amortization	(3,896,000)				$ (3,896,000)
Pacific International Bancorp, Inc. | Core Deposits
Finite-Lived Intangible Assets [Line Items]
Amortization Period					7 years
Gross Carrying Amount	603,000				$ 603,000
Accumulated Amortization	(517,000)				$ (517,000)
Foster Bankshares Inc | Core Deposits
Finite-Lived Intangible Assets [Line Items]
Amortization Period					10 years
Gross Carrying Amount	2,763,000				$ 2,763,000
Accumulated Amortization	(1,563,000)				(1,563,000)
Wilshire Bancorp, Inc
Finite-Lived Intangible Assets [Line Items]
Goodwill	359,000,000				$ 359,000,000		$ 359,050,000
Goodwill, acquired during period	359,000,000
Goodwill, Purchase Accounting Adjustments	475,000	$ (978,000)	(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				$ 18,138,000
Accumulated Amortization	$ (2,430,000)				$ (2,430,000)

Goodwill, Intangible Assets, 66

Goodwill, Intangible Assets, and Servicing Assets - Servicing Assets (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Servicing Asset at Amortized Cost, Balance [Roll Forward]
Balance at beginning of period	$ 25,338	$ 12,193	$ 26,457	$ 12,000	$ 12,000
Additions through originations of servicing assets	1,484	385	4,096	2,472
Amortization	(1,743)	(2,252)	(5,474)	(4,146)
Balance at end of period	25,079	26,529	$ 25,079	26,529	$ 26,457
SBA Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Discount Rate			10.35%		9.85%
SBA Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Prepayment Speed			8.19%		8.05%
Mortgage Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Discount Rate			9.50%		7.25%
Mortgage Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Prepayment Speed			9.12%		13.77%
Servicing Liability at Amortized Cost, Balance	1,480,000		$ 1,480,000		$ 1,550,000
Wilshire Bancorp, Inc
Servicing Asset at Amortized Cost, Balance [Roll Forward]
Additions through acquisition of Wilshire	$ 0	$ 16,203	$ 0	$ 16,203

Income Taxes Narrative (Details

Income Taxes Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Income Tax Examination [Line Items]
Income tax provision	$ 27,708,000	$ 17,169,000	$ 76,158,000	$ 50,212,000
Pretax income	$ 72,272,000	$ 43,274,000	$ 197,619,000	$ 123,329,000
Effective income tax rate	38.34%	39.68%	38.54%	40.71%
Unrecognized tax benefits	$ 2,100,000		$ 2,100,000		$ 2,200,000
Interest accrued	344,000		344,000		306,000
Penalties accrued	0		0		$ 0
Decrease in unrecognized tax benefits is reasonably possible	1,000,000		1,000,000
Series of Individually Immaterial Business Acquisitions [Member]
Income Tax Examination [Line Items]
Interest accrued	$ 67,000		$ 67,000

Income Taxes Effective Income T

Income Taxes Effective Income Tax Reconciliation (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Income Tax Disclosure [Abstract]
Statutory tax rate	35.00%	35.00%	35.00%	35.00%
State taxes-net of federal tax effect	7.14%	7.33%	7.14%	7.33%
Affordable housing partnership investment tax credit	(3.15%)	(2.40%)	(3.15%)	(2.40%)
Bank owned life insurance	(0.16%)	(0.22%)	(0.16%)	(0.22%)
Municipal securities	(0.24%)	(0.21%)	(0.24%)	(0.21%)
Nondeductible transaction costs	(0.02%)	0.86%	(0.02%)	0.86%
Other	(0.23%)	(0.68%)	(0.03%)	0.35%
Effective income tax rate	38.34%	39.68%	38.54%	40.71%

Fair Value Measurements - Asset

Fair Value Measurements - Assets and Liabilities Measured at Fair Value, Recurring (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Assets:
Securities available for sale, at fair value	$ 1,868,309,000		$ 1,868,309,000		$ 1,556,740,000
Reclassification adjustments for gains realized in income	0	$ (948,000)	0	$ (948,000)
Residential
Assets:
Securities available for sale, at fair value	901,882,000		901,882,000		705,667,000
Residential
Assets:
Securities available for sale, at fair value	596,270,000		596,270,000		591,576,000
Commercial
Assets:
Securities available for sale, at fair value	241,428,000		241,428,000		136,465,000
Municipal securities
Assets:
Securities available for sale, at fair value	97,052,000		97,052,000		86,839,000
Mutual funds
Assets:
Securities available for sale, at fair value	22,103,000		22,103,000		13,058,000
Recurring basis | Debt securities
Assets:
Securities available for sale, at fair value	4,999,000		4,999,000		12,008,000
Recurring basis | Residential
Assets:
Securities available for sale, at fair value	901,882,000		901,882,000		705,667,000
Recurring basis | Residential
Assets:
Securities available for sale, at fair value	596,270,000		596,270,000		591,576,000
Recurring basis | Commercial
Assets:
Securities available for sale, at fair value	241,428,000		241,428,000		136,465,000
Recurring basis | Trust preferred securities
Assets:
Securities available for sale, at fair value	4,575,000		4,575,000		11,127,000
Recurring basis | Municipal securities
Assets:
Securities available for sale, at fair value	97,052,000		97,052,000		86,839,000
Recurring basis | Mutual funds
Assets:
Securities available for sale, at fair value	22,103,000		22,103,000		13,058,000
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets:
Derivative Asset	0		0		0
Mortgage Banking Derivative Assets, at Fair Value	0		0		0
Mortgage Banking Derivative Liabilities, at Fair Value	0		0		0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Debt securities
Assets:
Securities available for sale, at fair value	0		0		0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Residential
Assets:
Securities available for sale, at fair value	0		0		0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Residential
Assets:
Securities available for sale, at fair value	0		0		0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Commercial
Assets:
Securities available for sale, at fair value	0		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		0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Municipal securities
Assets:
Securities available for sale, at fair value	0		0		0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Mutual funds
Assets:
Securities available for sale, at fair value	22,103,000		22,103,000		13,058,000
Recurring basis | Significant Other Observable Inputs (Level 2)
Assets:
Derivative Asset	(175,000)		(175,000)		(1,565,000)
Mortgage Banking Derivative Assets, at Fair Value	84,000		84,000		147,000
Mortgage Banking Derivative Liabilities, at Fair Value	25,000		25,000		41,000
Recurring basis | Significant Other Observable Inputs (Level 2) | Debt securities
Assets:
Securities available for sale, at fair value	4,999,000		4,999,000		12,008,000
Recurring basis | Significant Other Observable Inputs (Level 2) | Residential
Assets:
Securities available for sale, at fair value	901,882,000		901,882,000		705,667,000
Recurring basis | Significant Other Observable Inputs (Level 2) | Residential
Assets:
Securities available for sale, at fair value	596,270,000		596,270,000		591,576,000
Recurring basis | Significant Other Observable Inputs (Level 2) | Commercial
Assets:
Securities available for sale, at fair value	241,428,000		241,428,000		136,465,000
Recurring basis | Significant Other Observable Inputs (Level 2) | Trust preferred securities
Assets:
Securities available for sale, at fair value	4,575,000		4,575,000		11,127,000
Recurring basis | Significant Other Observable Inputs (Level 2) | Municipal securities
Assets:
Securities available for sale, at fair value	95,932,000		95,932,000		85,700,000
Recurring basis | Significant Other Observable Inputs (Level 2) | Mutual funds
Assets:
Securities available for sale, at fair value	0		0		0
Recurring basis | Significant Unobservable Inputs (Level 3)
Assets:
Derivative Asset	0		0		0
Mortgage Banking Derivative Assets, at Fair Value	0		0		0
Mortgage Banking Derivative Liabilities, at Fair Value	0		0		0
Recurring basis | Significant Unobservable Inputs (Level 3) | Debt securities
Assets:
Securities available for sale, at fair value	0		0		0
Recurring basis | Significant Unobservable Inputs (Level 3) | Residential
Assets:
Securities available for sale, at fair value	0		0		0
Recurring basis | Significant Unobservable Inputs (Level 3) | Residential
Assets:
Securities available for sale, at fair value	0		0		0
Recurring basis | Significant Unobservable Inputs (Level 3) | Commercial
Assets:
Securities available for sale, at fair value	0		0		0
Recurring basis | Significant Unobservable Inputs (Level 3) | Trust preferred securities
Assets:
Securities available for sale, at fair value	0		0		0
Recurring basis | Significant Unobservable Inputs (Level 3) | Municipal securities
Assets:
Securities available for sale, at fair value	1,120,000		1,120,000		1,139,000
Recurring basis | Significant Unobservable Inputs (Level 3) | Mutual funds
Assets:
Securities available for sale, at fair value	0		0		0
Estimate of Fair Value Measurement [Member] | Recurring basis
Assets:
Derivative Asset	(175,000)		(175,000)		(1,565,000)
Mortgage Banking Derivative Assets, at Fair Value	84,000		84,000		147,000
Mortgage Banking Derivative Liabilities, at Fair Value	$ 25,000		$ 25,000		$ 41,000

Fair Value Measurements - Summa

Fair Value Measurements - Summary of Derivative Notional Amounts and Fair Values (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Derivative [Line Items]
Derivative Liability, Notional Amount	$ 279,786	$ 223,098
Interest Rate Lock Commitments [Member]
Derivative [Line Items]
Derivative Asset, Notional Amount	10,734	11,168
Derivative Asset, Fair Value	60	130
Derivative Liability, Notional Amount	777	1,810
Derivative Liability, Fair Value	2	3
Short [Member] | Forward Contracts [Member]
Derivative [Line Items]
Derivative Asset, Notional Amount	6,966	3,223
Derivative Asset, Fair Value	24	17
Derivative Liability, Notional Amount	4,545	9,755
Derivative Liability, Fair Value	$ 23	$ 38

Fair Value Measurements - Rollf

Fair Value Measurements - Rollforward of Level 3 Assets (Details) - USD ($)	3 Months Ended			9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Servicing Asset at Amortized Cost, Period Increase (Decrease)		$ 0
Municipal securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	$ 1,127,000	1,229,000	$ 1,234,000	$ 1,139,000	$ 1,166,000
Total (losses) gains included in other comprehensive income	(7,000)		(5,000)	(19,000)	63,000
Ending Balance	$ 1,120,000	$ 1,139,000	$ 1,229,000	$ 1,120,000	$ 1,229,000

Fair Value Measurements - Ass72

Fair Value Measurements - Assets Measured at Fair Value, Non-Recurring (Details) - Non-recurring basis - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Impaired loans at fair value - Real estate loans
Assets:
Assets	$ 5,447	$ 58,882
Impaired loans at fair value - Commercial business
Assets:
Assets	9,865	6,563
Impaired loans at fair value - Consumer
Assets:
Assets		253
Loans held for sale, net
Assets:
Assets		3,788
OREO
Assets:
Assets	10,077	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 - Consumer
Assets:
Assets		0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Loans held for sale, net
Assets:
Assets		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 - Consumer
Assets:
Assets		0
Significant Other Observable Inputs (Level 2) | Loans held for sale, net
Assets:
Assets		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	5,447	58,882
Significant Unobservable Inputs (Level 3) | Impaired loans at fair value - Commercial business
Assets:
Assets	9,865	6,563
Significant Unobservable Inputs (Level 3) | Impaired loans at fair value - Consumer
Assets:
Assets		253
Significant Unobservable Inputs (Level 3) | Loans held for sale, net
Assets:
Assets		0
Significant Unobservable Inputs (Level 3) | OREO
Assets:
Assets	$ 10,077	$ 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		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 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	$ 142	$ (154)	$ (2,293)	$ 97
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	364	(3,108)	(4,637)	(5,956)
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	3	109	(1,236)	1,190
Impaired loans at fair value - Consumer
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total gains (losses), fair value	(206)	(151)	(701)	(245)
Loans held for sale, net
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total gains (losses), fair value	847	1,476	1,619	1,519
OREO
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total gains (losses), fair value	$ (640)	$ (162)	$ (1,967)	$ (1,408)

Fair Value Measurements - Carry

Fair Value Measurements - Carrying Amounts and Estimated Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Carrying Amount
Financial Assets:
FHLB stock	$ 28,426	$ 21,964
Level 1 | Carrying Amount
Financial Assets:
Cash and cash equivalents	405,296	437,334
Level 1 | Estimated Fair Value
Financial Assets:
Cash and cash equivalents	405,296	437,334
Level 2 | Carrying Amount
Financial Assets:
Loans held for sale	11,425	22,785
Customers' liabilities on acceptances	1,433	2,899
Financial Liabilities:
Noninterest-bearing deposits	3,049,998	2,900,241
Saving and other interest bearing demand deposits	3,929,015	3,703,352
Time deposits	4,014,307	4,038,442
FHLB advances	1,018,046	754,290
Subordinated debentures	100,590	99,808
Accrued interest payable	13,740	10,863
Bank's liabilities on acceptances outstanding	1,433	2,899
Level 2 | Estimated Fair Value
Financial Assets:
Loans held for sale	11,964	24,492
Customers' liabilities on acceptances	1,433	2,899
Financial Liabilities:
Noninterest-bearing deposits	3,049,998	2,900,241
Saving and other interest bearing demand deposits	3,929,015	3,703,352
Time deposits	4,008,879	4,036,664
FHLB advances	1,013,404	749,486
Subordinated debentures	100,590	99,808
Accrued interest payable	13,740	10,863
Bank's liabilities on acceptances outstanding	1,433	2,899
Level 2/3 | Carrying Amount
Financial Assets:
Accrued interest receivable	29,145	26,880
Level 2/3 | Estimated Fair Value
Financial Assets:
Accrued interest receivable	29,145	26,880
Level 3 | Carrying Amount
Financial Assets:
Loans receivable - net	10,879,341	10,463,989
Financial Liabilities:
Servicing Assets, Fair Value Disclosure	25,079	26,457
Level 3 | Estimated Fair Value
Financial Assets:
Loans receivable - net	10,985,397	10,666,642
Financial Liabilities:
Servicing Assets, Fair Value Disclosure	28,152	26,457
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	53,715
Other Investments [Member] | Level 2/3 | Estimated Fair Value
Financial Assets:
Interest bearing deposits in other financial institutions and other investments	$ 53,615	$ 43,773

Stockholders' Equity - Discussi

Stockholders' Equity - Discussion of Acquisition (Details) - USD ($) $ / shares in Units, $ in Thousands	Jul. 29, 2016	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Dec. 31, 2015
Business Acquisition [Line Items]
Total stockholders’ equity		$ 1,934,431	$ 1,855,473	$ 1,854,571	$ 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 - Discus76

Stockholders' Equity - Discussion of Warrants (Details) - USD ($) $ / shares in Units, $ in Millions	May 20, 2015	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Class of Warrant or Right [Line Items]
Dividends paid (in dollars per share)		$ 0.13	$ 0.11	$ 0.37	$ 0.33
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		20,238		20,238

Stockholders' Equity - Stockhol

Stockholders' Equity - Stockholders’ Equity (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Stockholders’ Equity and Regulatory Matters [Abstract]
Beginning balance			$ (14,657,000)	$ (1,832,000)
Unrealized loss on securities available for sale and interest only strips	$ (211,000)	$ (2,848,000)	7,697,000	19,347,000
Reclassification from AOCI, Current Period, before Tax, Attributable to Parent	0	948,000	0	(948,000)
Less tax effect	(89,000)	(1,239,000)	3,251,000	8,150,000
Total other comprehensive loss	(122,000)	(2,557,000)	4,446,000	10,249,000
Ending balance	(10,211,000)	8,417,000	(10,211,000)	8,417,000
Reclassifications out of accumulated other comprehensive (loss) income	$ 0	$ 948,000	$ 0	$ 948,000

Regulatory Matters (Details)

Regulatory Matters (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Company
Total capital (to risk-weighted assets), Amount
Total Capital, Actual	$ 1,648,543	$ 1,578,690
Total Capital, Required For Capital Adequacy Purposes	954,845	926,076
Required for Capital Adequacy with Capital Buffer	1,104,039	998,425
Tier I capital (to risk-weighted assets), Amount
Tier I Capital, Actual (Risk Based)	1,564,074	1,496,153
Tier I Capital, Required For Capital Adequacy Purposes	716,134	694,557
Tier 1 Capital, Required for Capital Adequacy with Capital Buffer	865,328	766,906
Tier I capital (to average assets), Amount
Tier I Capital, Actual (Leverage)	1,564,074	1,496,153
Tier I Capital, Required For Capital Adequacy Purposes	$ 530,885	$ 520,947
Total capital and Tier I capital (to risk-weighted assets), Ratio
Total Capital (to Risk Weighted Assets), Actual	13.81%	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%	8.625%
Tier I Capital (to Risk Weighted Assets), Actual (Risk Based)	13.10%	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)	11.78%	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	$ 1,628,169	$ 1,557,765
Total Capital, Required For Capital Adequacy Purposes	954,369	925,566
Required for Capital Adequacy with Capital Buffer	1,103,489	997,876
Required To Be Well Capitalized under Prompt Corrective Action Provisions	1,192,961	1,156,957
Tier I capital (to risk-weighted assets), Amount
Tier I Capital, Actual (Risk Based)	1,543,700	1,475,228
Tier I Capital, Required For Capital Adequacy Purposes	715,777	694,174
Tier 1 Capital, Required for Capital Adequacy with Capital Buffer	685,953	766,484
Tier I Capital, Minimum to be Well Capitalized Under Prompt Corrective Action Provisions (Risk Based)	954,369	925,566
Tier I capital (to average assets), Amount
Tier I Capital, Actual (Leverage)	1,543,700	1,475,228
Tier I Capital, Required For Capital Adequacy Purposes	530,807	520,903
Tier I Capital, Minimum to be Well Capitalized Under Prompt Corrective Action Provisions (Leverage)	$ 663,508	$ 651,129
Total capital and Tier I capital (to risk-weighted assets), Ratio
Total Capital (to Risk Weighted Assets), Actual	13.65%	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%	8.625%
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)	12.94%	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)	11.63%	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)	$ 1,467,385	$ 1,400,246
Tier I Capital, Required For Capital Adequacy Purposes	537,100	520,917
Tier 1 Capital, Required for Capital Adequacy with Capital Buffer	$ 686,295	$ 593,267
Total capital and Tier I capital (to risk-weighted assets), Ratio
Tier I Capital (to Risk Weighted Assets), Actual (Risk Based)	12.29%	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)	$ 1,543,700	$ 1,475,228
Tier I Capital, Required For Capital Adequacy Purposes	536,883	520,631
Tier 1 Capital, Required for Capital Adequacy with Capital Buffer	685,953	592,941
Tier I Capital, Minimum to be Well Capitalized Under Prompt Corrective Action Provisions (Risk Based)	$ 775,425	$ 752,022
Total capital and Tier I capital (to risk-weighted assets), Ratio
Tier I Capital (to Risk Weighted Assets), Actual (Risk Based)	12.94%	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%