Hope Bancorp (HOPE) 10-Q 11 May 20 2020 Q1 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	3 Months Ended
	Mar. 31, 2020	May 06, 2020
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2020
Document Transition Report	false
Entity File Number	000-50245
Entity Registrant Name	HOPE BANCORP INC
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	95-4849715
Entity Address, Address Line One	3200 Wilshire Boulevard, Suite 1400
Entity Address, City or Town	Los Angeles
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	90010
City Area Code	213
Local Phone Number	639-1700
Title of 12(b) Security	Common Stock
Trading Symbol	HOPE
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		123,191,723
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Entity Central Index Key	0001128361

Consolidated Statements Of Fina

Consolidated Statements Of Financial Condition - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Cash and cash equivalents:
Cash and due from banks	$ 255,441	$ 283,130
Interest bearing cash in other banks	546,592	415,437
Total cash and cash equivalents	802,033	698,567
Interest bearing deposits in other financial institutions	29,162	29,162
Securities available for sale, at fair value	1,718,702	1,715,987
Equity investments	49,569	49,090
Loans held for sale, at the lower of cost or fair value	8,281	54,271
Loans receivable, net of allowance for credit losses of $144,923 and $94,144 at March 31, 2020 and December 31, 2019, respectively	12,438,493	12,181,863
Other real estate owned (“OREO”), net	23,039	24,091
Federal Home Loan Bank (“FHLB”) stock, at cost	18,225	19,407
Premises and equipment, net	51,392	52,012
Accrued interest receivable	30,450	30,772
Deferred tax assets, net	28,911	31,663
Customers’ liabilities on acceptances	1,951	1,117
Bank owned life insurance (“BOLI”)	76,429	76,339
Investments in affordable housing partnerships	80,049	82,600
Operating lease right-of-use assets, net	56,696	58,593
Goodwill	464,450	464,450
Core deposit intangible assets, net	11,302	11,833
Servicing assets, net	14,847	16,417
Other assets	117,453	69,206
Total assets	16,021,434	15,667,440
Deposits:
Noninterest bearing	3,010,143	3,108,687
Interest bearing:
Money market and NOW accounts	4,851,000	3,985,556
Savings deposits	272,577	274,151
Time deposits	4,702,847	5,158,970
Total deposits	12,836,567	12,527,364
FHLB advances	675,000	625,000
Convertible notes, net	200,716	199,458
Subordinated debentures, net	103,318	103,035
Accrued interest payable	30,436	33,810
Acceptances outstanding	1,951	1,117
Operating lease liabilities	58,827	60,506
Commitments to fund investments in affordable housing partnerships	20,688	28,481
Other liabilities	75,843	52,658
Total liabilities	14,003,346	13,631,429
STOCKHOLDERS’ EQUITY:
Common stock, $0.001 par value; authorized 150,000,000 shares at March 31, 2020 and December 31, 2019: issued and outstanding 135,830,985 and 123,169,404 shares, respectively, at March 31, 2020, and issued and outstanding 135,702,090 and 125,756,543 shares, respectively, at December 31, 2019	136	136
Additional paid-in capital	1,429,275	1,428,066
Retained earnings	752,228	762,480
Treasury stock, at cost; 12,661,581 and 9,945,547 shares at March 31, 2020 and December 31, 2019	(200,000)	(163,820)
Accumulated other comprehensive income, net	36,449	9,149
Total stockholders’ equity	2,018,088	2,036,011
Total liabilities and stockholders’ equity	$ 16,021,434	$ 15,667,440

Consolidated Statements Of Fi_2

Consolidated Statements Of Financial Condition (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Total ACL	$ 144,923	$ 94,144
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	150,000,000	150,000,000
Common stock, shares issued (in shares)	135,830,985	135,702,090
Common stock, shares outstanding (in shares)	123,169,404	125,756,543
Treasury stock, at cost, shares repurchased (in shares)	12,661,581	9,945,547

Consolidated Statements Of Inco

Consolidated Statements Of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
INTEREST INCOME:
Interest and fees on loans	$ 154,230	$ 158,136
Interest on securities	10,609	12,319
Interest on other investments	2,029	2,675
Total interest income	166,868	173,130
INTEREST EXPENSE:
Interest on deposits	41,113	46,847
Interest on FHLB advances	2,647	2,614
Interest on other borrowings and convertible notes	3,817	4,061
Total interest expense	47,577	53,522
NET INTEREST INCOME BEFORE PROVISION FOR CREDIT LOSSES	119,291	119,608
PROVISION FOR CREDIT LOSSES	28,000	3,000
NET INTEREST INCOME AFTER PROVISION FOR CREDIT LOSSES	91,291	116,608
NONINTEREST INCOME:
Service fees on deposit accounts	4,133	4,317
International service fees	790	933
Loan servicing fees, net	365	730
Wire transfer fees	998	1,089
Net gains on sales of other loans	1,855	741
Other income and fees	5,123	3,612
Total noninterest income	13,264	11,422
NONINTEREST EXPENSE:
Salaries and employee benefits	42,502	40,429
Occupancy	7,410	7,677
Furniture and equipment	4,259	3,446
Advertising and marketing	1,673	2,062
Data processing and communications	2,631	2,956
Professional fees	3,300	5,380
Investments in affordable housing partnerships expenses	2,551	2,881
FDIC assessments	1,559	1,551
Credit related expenses	1,662	678
OREO expense (income), net	843	(152)
Other	3,750	3,925
Total noninterest expense	72,140	70,833
INCOME BEFORE INCOME TAXES	32,415	57,197
INCOME TAX PROVISION	6,462	14,439
NET INCOME	$ 25,953	$ 42,758
EARNINGS PER COMMON SHARE
Basic (in dollars per share)	$ 0.21	$ 0.34
Diluted (in dollars per share)	$ 0.21	$ 0.34

Consolidated Statements Of Comp

Consolidated Statements Of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 25,953	$ 42,758
Other comprehensive income:
Change in unrealized net holding gains on securities available for sale	38,853	24,666
Tax effect	(11,553)	(7,319)
Other comprehensive income, net of tax	27,300	17,347
Total comprehensive income	$ 53,253	$ 60,105

Consolidated Statements Of Chan

Consolidated Statements Of Changes In Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common stock	Additional paid-in capital	Retained earnings	Treasury stock	Accumulated other comprehensive (loss) income, net
Balance at beginning of period at Dec. 31, 2018	$ 1,903,211	$ 136	$ 1,423,405	$ 662,375	$ (150,000)	$ (32,705)
Balance at beginning of period (in shares) at Dec. 31, 2018		126,639,912
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of shares pursuant to various stock plans, net of forfeitures and tax withholding cancellations	3		3
Issuance of shares pursuant to various stock plans, net of forfeitures and tax withholding cancellations (in shares)		(4,328)
Stock-based compensation	621		621
Cash dividends declared on common stock ($0.14 per share)	(17,729)			(17,729)
Comprehensive income:
Net income	42,758			42,758
Other comprehensive income	17,347					17,347
Balance at end of period at Mar. 31, 2019	1,946,211	$ 136	1,424,029	687,404	(150,000)	(15,358)
Balance at end of period (in shares) at Mar. 31, 2019		126,635,584
Balance at beginning of period at Dec. 31, 2019	2,036,011	$ 136	1,428,066	762,480	(163,820)	9,149
Balance at beginning of period (in shares) at Dec. 31, 2019		125,756,543
Increase (Decrease) in Stockholders' Equity [Roll Forward]
CECL day 1 impact	(26,729)			(26,729)
CECL day 1 impact tax adjustment	7,947			7,947
Issuance of shares pursuant to various stock plans, net of forfeitures and tax withholding cancellations (in shares)		128,895
Stock-based compensation	1,209		1,209
Cash dividends declared on common stock ($0.14 per share)	(17,423)			(17,423)
Comprehensive income:
Net income	25,953			25,953
Other comprehensive income	$ 27,300					27,300
Repurchase of treasury stock, (in shares)	(2,716,034)	(2,716,034)
Repurchase of treasury stock	$ (36,180)				(36,180)
Balance at end of period at Mar. 31, 2020	$ 2,018,088	$ 136	$ 1,429,275	$ 752,228	$ (200,000)	$ 36,449
Balance at end of period (in shares) at Mar. 31, 2020		123,169,404

Consolidated Statements Of Ch_2

Consolidated Statements Of Changes In Stockholders' Equity (Unaudited) (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Stockholders' Equity [Abstract]
Cash dividends declared on common stock (in dollars per share)	$ 0.14	$ 0.14

Consolidated Statements Of Cash

Consolidated Statements Of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 25,953,000	$ 42,758,000
Adjustments to reconcile net income to net cash from operating activities:
Discount accretion, net of depreciation and amortization	(2,497,000)	1,494,000
Stock-based compensation expense	1,990,000	815,000
Provision for credit losses	28,000,000	3,000,000
Provision for unfunded loan commitments	610,000	0
Valuation adjustment of OREO	765,000	60,000
Net gains on sales other loans	(1,855,000)	(741,000)
Earnings on BOLI	(90,000)	(367,000)
Net change in fair value of derivatives	(561,000)	(39,000)
Net losses on sale and disposal of premises and equipment	0	13,000
Net losses (gains) on sales of OREO	61,000	(3,000)
Net change in fair value of equity investments with readily determinable fair value	(354,000)	(912,000)
Losses on investments in affordable housing partnership	2,480,000	2,886,000
Net change in deferred income taxes	(853,000)	4,241,000
Proceeds from sales of loans held for sale	74,660,000	36,919,000
Originations of loans held for sale	(33,061,000)	(17,465,000)
Originations of servicing assets	(377,000)	(327,000)
Net change in accrued interest receivable	322,000	(2,606,000)
Net change in other assets	(42,527,000)	3,782,000
Net change in accrued interest payable	(3,374,000)	6,137,000
Net change in other liabilities	22,575,000	(6,813,000)
Net cash provided by operating activities	71,867,000	72,832,000
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of interest bearing deposits in other financial institutions	(2,205,000)	(3,430,000)
Redemption of interest bearing deposits in other financial institutions	2,205,000	2,698,000
Purchase of securities available for sale	(56,355,000)	0
Proceeds from matured, called, or paid-down securities available for sale	90,594,000	50,923,000
Proceeds from sales of other loans held for sale previously classified as held for investment	1,053,000	33,644,000
Net change in loans receivable	(300,852,000)	22,561,000
Proceeds from sales of OREO	946,000	1,632,000
Purchase of FHLB stock	(974,000)	(155,000)
Redemption of FHLB stock	2,156,000	4,036,000
Purchase of premises and equipment	(1,398,000)	(1,541,000)
Proceeds from BOLI death benefits	0	256,000
Investments in affordable housing partnerships	(7,793,000)	(5,798,000)
Net cash (used in) provided by investing activities	(272,623,000)	104,826,000
CASH FLOWS FROM FINANCING ACTIVITIES
Net change in deposits	309,203,000	93,540,000
Proceeds from FHLB advances	800,000,000	175,000,000
Repayment of FHLB advances	(750,000,000)	(275,000,000)
Purchase of treasury stock	(36,777,000)	0
Cash dividends paid on common stock	(17,423,000)	(17,729,000)
Taxes paid in net settlement of restricted stock	(781,000)	(194,000)
Issuance of additional stock pursuant to various stock plans	0	3,000
Net cash provided by (used in) financing activities	304,222,000	(24,380,000)
NET CHANGE IN CASH AND CASH EQUIVALENTS	103,466,000	153,278,000
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	698,567,000	459,606,000
CASH AND CASH EQUIVALENTS, END OF PERIOD	802,033,000	612,884,000
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION
Interest paid	49,410,000	47,182,000
Income taxes paid	1,777,000	1,730,000
SUPPLEMENTAL DISCLOSURES OF NON-CASH ACTIVITIES
Transfer from loans receivable to OREO	979,000	0
Transfer from loans receivable to loans held for sale	1,002,000	33,390,000
Transfer from loans held for sale to loans receivable	1,451,000	5,181,000
Lease liabilities arising from obtaining right-of-use assets	$ 0	$ 62,833,000

Hope Bancorp, Inc.

Hope Bancorp, Inc.	3 Months Ended
	Mar. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Hope Bancorp, Inc.	Hope Bancorp, Inc. Hope Bancorp, Inc. (“Hope Bancorp” on a parent-only basis and the “Company” on a consolidated basis), headquartered in Los Angeles, California, is the holding company for Bank of Hope (the “Bank”). As of March 31, 2020

Basis of Presentation

Basis of Presentation	3 Months Ended
	Mar. 31, 2020
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, 2019 which was from the audited financial statements included in the Company’s 2019 Annual Report on Form 10-K. Certain information and footnote disclosures normally included in annual financial statements prepared in accordance with accounting principles generally accepted in the United States of America have been condensed or omitted pursuant to such SEC rules and regulations. The consolidated financial statements include the accounts of Hope Bancorp and its wholly owned subsidiaries, principally Bank of Hope. All intercompany transactions and balances have been eliminated in consolidation. The Company has made all adjustments, that in the opinion of management, are necessary to fairly present the Company’s financial position at March 31, 2020 and December 31, 2019 and the results of operations for the three months ended March 31, 2020 and 2019 . 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. The global pandemic resulting from the outbreak of the novel strain of coronavirus (“COVID-19”) has substantially and negatively impacted the United States economy, disrupted global supply chains, considerably lowered equity market valuations, created significant volatility and disruption in financial markets, and materially increased unemployment levels. In addition, the pandemic has resulted in temporary closures of countless businesses and the institution of social distancing and sheltering in place requirements in most states and communities. The Company could experience a material adverse effect on its business as a result of the impact of the COVID-19 pandemic, and the resulting governmental actions to curtail its spread. It is at least reasonably possible that information which was available at the date of the financial statements will change in the near term due to the COVID-19 pandemic and that the effect of the change could be material to the financial statements. The extent to which the COVID-19 pandemic will impact the Company’s estimates and assumptions is highly uncertain and the Company is unable to make an estimate, at this time. These unaudited consolidated financial statements should be read along with the audited consolidated financial statements and accompanying notes included in the Company’s 2019 Annual Report on Form 10-K. Adopted Accounting Pronouncements In June 2016, the Financial Accounting Standards Board (“FASB”) issued ASU 2016-13, “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments”, also referred to as “CECL”. The FASB subsequently issued ASU 2018-19, ASU 2019-04, ASU 2019-05, ASU 2019-10, ASU 2019-11 and ASU 2020-02 to provide additional clarification, implementation, codification improvements, transition guidance, and adoption guidance related to ASU 2016-13. ASU 2016-13 requires the measurement of all expected credit losses for financial assets carried at amortized cost held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. On January 1, 2020, the Company adopted CECL using the modified retrospective approach. The adoption of the standard resulted in changes to the Company’s loan and allowance policies. Refer to Note 1 to the Consolidated Financial Statements in the Company’s 2019 Annual Report on Form 10-K regarding additional significant accounting policies, including accounting policies in effect prior to the adoption of CECL. Upon adoption of CECL accounting standard on January 1, 2020, the Company recognized a day 1 increase of its Allowance for Credit Losses (“ACL”) of $26.2 million . The Company adopted CECL without electing the fair value option on eligible financial instruments. Internal controls related to the CECL ACL calculation were finalized prior to adoption. The increase in the ACL was largely driven by longer duration CRE loans due to the capture of lifetime expected credit losses under CECL. On January 1, 2020, the Company also recorded a cumulative-effect adjustment, net of taxes, totaling $18.8 million to decrease retained earnings. In accordance with the revised regulatory CECL transition guidance, the Company has elected to defer the regulatory capital impact of the adoption of CECL for two years, at which time the impact will be phased-in over a three year period. The Company did not record an ACL on its available for sale securities upon adoption of CECL or as of March 31, 2020. The Company adopted CECL using the prospective transition approach for purchased credit deteriorated (“PCD”) assets which were previously classified as purchased credit impaired (“PCI”) and accounted for under ASC 310-30. In accordance with CECL standard, the Company did not reassess whether PCI assets met the definition of PCD assets as of the date of the adoption of CECL. On January 1, 2020, the amortized cost basis of the PCD assets of $95.0 million were adjusted to reflect the ACL for loans. The remaining noncredit discount of $29.2 million at March 31, 2020, based on the adjusted amortized cost basis will be accreted into interest income at the effective interest rate over the life of the PCD loans. Under the CECL ACL methodology, losses are estimated for life of loans split out into three different periods. The initial period uses a forecast of two years for its portfolio segments using economic scenarios from an independent third party to estimate losses. Subsequent to the forecast period, a one year reversion period is used which connects the forecast period to last period of historical loss estimates. In January 2017, the FASB issued ASU 2017-04, “Intangibles: Goodwill and Other: Simplifying the Test for Goodwill Impairment”. ASU 2017-04 will amend and simplify current goodwill impairment testing to eliminate Step 2 from the current provisions. Under the new guidance, an entity performs the goodwill impairment test by comparing the fair value of a reporting unit with its carrying value and recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value. An entity still has the option to perform the quantitative assessment for a reporting unit to determine if a quantitative impairment test is necessary. ASU 2017-04 has been adopted for interim and annual goodwill impairment tests in fiscal years beginning January 1, 2020. The Company performed a qualitative assessment during the interim period ended March 31, 2020, and determined that goodwill was no t impaired as of that date. The adoption of ASU 2017-04 did not have a material impact on the Company’s consolidated financial statements. In August 2018, the FASB issued ASU 2018-13, “Fair Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement”. ASU 2018-13 modifies the disclosure requirements for fair value measurements by removing, modifying, or adding certain disclosures. ASU 2018-13 removes the disclosure requirement detailing the amount of and reasons for transfers between Level 1 and Level 2, and the valuation processes for Level 3 fair value measurements. In addition, ASU 2018-13 modifies the disclosure requirements for investments in certain entities that calculate net asset value. Lastly, ASU 2018-13 adds a disclosure requirement for changes in unrealized gains and losses for the period included in other comprehensive income for recurring Level 3 fair value measurements held at the end of the reporting period and the range and weighted average of significant unobservable inputs used to develop Level 3 measurements. ASU 2018-13 is effective annual periods in fiscal years beginning January 1, 2020, including interim periods within those annual periods. Early adoption is permitted upon the issuance of ASU 2018-13. The removed and modified disclosures will be adopted on a retrospective basis, and the new disclosures will be adopted on a prospective basis. The adoption of ASU 2018-13 did not have a material impact on the Company’s consolidated financial statements. In August 2018, the FASB issued ASU 2018-15, “ Intangibles - Goodwill and Other - Internal Use Software (Subtopic 250-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract (a consensus of the FASB Emerging Issues Task Force)”. ASU 2018-15 requires an entity in a cloud computing arrangement (i.e., hosting arrangement) that is a service contract to follow the internal-use software guidance in ASC 350-40 to determine which implementation costs to capitalize as assets or expense as incurred. Capitalized implementation costs should be presented in the same line item on the balance sheet as amounts prepaid for the hosted service, if any (generally as an “other asset”). The capitalized costs will be amortized over the term of the hosting arrangement, with the amortization expense being presented in the same income statement line item as the fees paid for the hosted service. The Company adopted ASU 2018-15 on January 1, 2020. The adoption of ASU 2018-15 did not have a material impact on the Company’s consolidated financial statements. Pending Accounting Pronouncements In March 2020, the FASB issued ASU 2020-04, Reference Rate Reform: Facilitation of the Effects of Reference Rate Reform on Financial Reporting. The amendments provide temporary, optional guidance to ease the potential burden in accounting for reference rate reform. The amendments provide optional expedients and exceptions for applying GAAP to transactions affected by reference rate reform if certain criteria are met. The amendments primarily include relief related to contract modifications and hedging relationships, as well as providing a one-time election for the sale or transfer of debt securities classified as held-to-maturity. This guidance is effective immediately and the amendments may be applied prospectively through December 31, 2022. The Company is currently in the process of evaluating ASU 2020-04 and determining the impact to the Company’s consolidated financial statements.

Earnings Per Share ("EPS")

Earnings Per Share ("EPS")	3 Months Ended
	Mar. 31, 2020
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 or convertible notes 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, convertible notes, 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 March 31, 2020 and 2019 , stock options and restricted shares awards of 660,995 and 969,871 shares of common stock, respectively, were excluded in computing diluted earnings per common share because they were anti-dilutive. The Company previously issued $217.5 million in convertible senior notes maturing on May 15, 2038. The convertible notes can be converted into the Company’s shares of common stock at an initial rate of 45.0760 shares per $1,000 principal amount of the notes (See footnote 10 “Subordinated Debentures and Convertible Notes” for additional information regarding convertible notes issued). For the three months ended March 31, 2020 and 2019 , shares related to the convertible notes issued were not included in the Company’s diluted EPS calculation. In accordance with the terms of the convertible notes and settlement options available to the Company, no shares would have been delivered to investors of the convertible notes upon assumed conversion based on the Company’s common stock price during the three months ended March 31, 2020 and 2019 . In June 2019 the Company’s Board of Directors approved a share repurchase program that authorized the Company to repurchase up to $50.0 million of its common stock. As of December 31, 2019, the Company had repurchased 9,945,547 shares of common stock totaling $163.8 million as part of previously announces share repurchased programs. The repurchased shares were recorded as treasury stock and reduced the total number of common shares outstanding. As of March 31, 2020, 12,661,581 shares have been repurchased totaling $200.0 million . The following tables show the computation of basic and diluted EPS for the three months ended March 31, 2020 and 2019 . Three Months Ended March 31, 2020 2019 Net Income (Numerator) Weighted-Average Shares (Denominator) Earnings Per Share Net Income (Numerator) Weighted-Average Shares Earnings (Dollars in thousands, except share and per share data) Basic EPS - common stock $ 25,953 124,295,327 $ 0.21 $ 42,758 126,640,464 $ 0.34 Effect of dilutive securities: Stock options, restricted stock, and ESPP shares 380,969 179,208 Diluted EPS - common stock $ 25,953 124,676,296 $ 0.21 $ 42,758 126,819,672 $ 0.34

Equity Investments

Equity Investments	3 Months Ended
	Mar. 31, 2020
Investments, Debt and Equity Securities [Abstract]
Equity Investment Securities	Equity Investments Equity investments with readily determinable fair values at March 31, 2020 and December 31, 2019 , consisted of mutual funds in the amount of $22.5 million and $22.1 million , respectively and is included in “Equity investments” on the Consolidated Statements of Financial Condition. During the second quarter of 2019, the Company sold its equity stock in other institutions for $2.6 million . There was no change in fair value recorded on the equity investments sold. The changes in fair value for equity investments with readily determinable fair values for the three ended March 31, 2020 and 2019 were recorded in other noninterest income and fees as summarized in the table below: Three Months Ended March 31, 2020 2019 (Dollars in thousands) Net change in fair value recorded during the period on equity investments with readily determinable fair value $ 354 $ 912 Net change in fair value recorded on equity investments sold during the period — — Net change in fair value on equity investments with readily determinable fair values $ 354 $ 912 At March 31, 2020 and December 31, 2019 , the Company also had equity investments without readily determinable fair value which are carried at cost less any determined impairment. The balance of these investments is adjusted for changes in subsequent observable prices. At March 31, 2020 , the total balance of equity investments without readily determinable fair values included in “Equity investments” on the Consolidated Statements of Financial Condition was $27.1 million , consisting of $370 thousand in correspondent bank stock, $1.0 million in Community Development Financial Institutions (“CDFI”) investments, and $25.7 million in Community Reinvestment Act (“CRA”) investments. At December 31, 2019 , the total balance of equity investments without readily determinable fair values was $27.0 million , consisting of $370 thousand in correspondent bank stock, $1.0 million in CDFI investments, and $25.6 million in CRA investments. The Company had no impairments or subsequent observable price changes for equity investments without readily determinable fair values for the three months ended March 31, 2020 and 2019

Securities Available for Sale

Securities Available for Sale	3 Months Ended
	Mar. 31, 2020
Debt Securities, Available-for-sale [Abstract]
Securities Available for Sale	Securities Available for Sale The following is a summary of securities available for sale as of the dates indicated: At March 31, 2020 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Allowance For Investment Credit Losses Fair Value (Dollars in thousands) Debt securities: U.S. Government agency and U.S. Government sponsored enterprises: Collateralized mortgage obligations $ 679,805 $ 21,773 $ (31 ) $ — $ 701,547 Mortgage-backed securities: Residential 375,183 10,213 — — 385,396 Commercial 524,969 18,921 (559 ) — 543,331 Corporate securities 5,000 — (656 ) — 4,344 Municipal securities 82,746 1,577 (239 ) — 84,084 Total investment securities available for sale $ 1,667,703 $ 52,484 $ (1,485 ) $ — $ 1,718,702 At December 31, 2019 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Allowance For (Dollars in thousands) Debt securities: U.S. Government agency and U.S. Government sponsored enterprises: Collateralized mortgage obligations $ 735,094 $ 4,220 $ (2,659 ) N/A $ 736,655 Mortgage-backed securities: Residential 353,073 1,422 (1,598 ) N/A 352,897 Commercial 541,043 13,441 (2,360 ) N/A 552,124 Corporate securities 5,000 — (800 ) N/A 4,200 Municipal securities 69,631 831 (351 ) N/A 70,111 Total investment securities available for sale $ 1,703,841 $ 19,914 $ (7,768 ) N/A $ 1,715,987 As of March 31, 2020 and December 31, 2019 , 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. During the three months ended March 31, 2020 and 2019, the Company recognized zero net gains on sales and calls of securities available for sale. For the three ended March 31, 2020 and 2019, there were no sales of securities available for sale. At March 31, 2020 and December 31, 2019 , $36.4 million and $9.1 million in unrealized gains on securities available for sale net of taxes, respectively, were included in accumulated other comprehensive income. For the three months ended March 31, 2020 and 2019, there were no reclassifications out of accumulated other comprehensive income into earnings. The amortized cost and estimated fair value of investment securities at March 31, 2020 , by contractual maturity, is presented in the table 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. Collateralized mortgage obligations and mortgage-backed securities are not due at a single maturity date and their total balances are shown separately. Amortized Cost Estimated Fair Value (Dollars in thousands) Available for sale: Due within one year $ 80 $ 80 Due after one year through five years 349 351 Due after five years through ten years — — Due after ten years 87,317 87,997 U.S. Government agency and U.S. Government sponsored enterprises: Collateralized mortgage obligations 679,805 701,547 Mortgage-backed securities: Residential 375,183 385,396 Commercial 524,969 543,331 Total $ 1,667,703 $ 1,718,702 Securities with carrying values of approximately $356.8 million and $340.9 million at March 31, 2020 and December 31, 2019 , respectively, were pledged to secure public deposits, for 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 values, aggregated by investment category and the length of time that the individual securities have been in a continuous unrealized loss position as of the dates indicated. As of March 31, 2020 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) Collateralized mortgage obligations* 3 $ 16,760 $ (31 ) — $ — $ — 3 $ 16,760 $ (31 ) Mortgage-backed securities: Residential* — — — — — — — — — Commercial* 8 99,878 (559 ) — — — 8 99,878 (559 ) Corporate securities — — — 1 4,344 (656 ) 1 4,344 (656 ) Municipal securities 1 3,588 (15 ) 3 14,462 (224 ) 4 18,050 (239 ) Total 12 $ 120,226 $ (605 ) 4 $ 18,806 $ (880 ) 16 $ 139,032 $ (1,485 ) __________________________________ * Investments in U.S. Government agency and U.S. Government sponsored enterprises As of December 31, 2019 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* 20 $ 108,236 $ (721 ) 32 $ 183,050 $ (1,938 ) 52 $ 291,286 $ (2,659 ) Mortgage-backed securities: Residential* 6 84,107 (267 ) 16 129,457 (1,331 ) 22 213,564 (1,598 ) Commercial* 7 68,452 (1,037 ) 5 73,697 (1,323 ) 12 142,149 (2,360 ) Corporate securities — — — 1 4,200 (800 ) 1 4,200 (800 ) Municipal securities 2 8,942 (39 ) 3 15,437 (312 ) 5 24,379 (351 ) Total 35 $ 269,737 $ (2,064 ) 57 $ 405,841 $ (5,704 ) 92 $ 675,578 $ (7,768 ) __________________________________ * Investments in U.S. Government agency and U.S. Government sponsored enterprises The Company had a corporate security and municipal securities that were in a continuous unrealized loss position for twelve months or longer as of March 31, 2020 . The corporate security that was in a continuous loss position for twelve months or longer had unrealized losses of $656 thousand at March 31, 2020 . Municipal securities that were in a continuous loss position for twelve months or longer had unrealized losses of $224 thousand at March 31, 2020 . 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. With the adoption of CECL, the length of time that the fair value of investment securities have been less than amortized cost is not considered when assessing for credit impairment. On January 1, 2020, the Company adopted ASU 2016-13 and implemented the CECL methodology for allowance for credit losses on its investment securities available for sale. The new CECL methodology replaces the other-than-temporary impairment model that previously existed. The Company did not have a day 1 impact attributable to its investment securities portfolio and did not have an allowance for credit losses as of March 31, 2020. The Company has elected to exclude accrued interest from the amortized cost of its investment securities available for sale. Accrued interest receivable for investment securities available for sale at March 31, 2020 and December 31, 2019 , totaled $4.2 million and $4.3 million , respectively. The Company evaluates securities in unrealized loss position for impairment related to credit losses on at least a quarterly basis. Securities in unrealized loss positions are first assessed as to whether we intend to sell, or if it is more likely than not that we will be required to sell the security before recovery of its amortized cost basis. If one of the criteria is met, the security’s amortized cost basis is written down to fair value through current earnings. For securities that do not meet these criteria, the Company evaluates whether the decline in fair value resulted from credit losses or other factors. In evaluating whether a credit loss exists, the Company has set up an initial filter for impairment triggers. Once the quantitative filters have been triggered, the securities are placed on a watch list and an additional assessment is performed to identify whether a credit impairment exists. In making this assessment, management considers the extent to which fair value is less than amortized cost, any changes to the rating of the security by a rating agency, and adverse conditions specifically related to the security and the issuer, among other factors. If this assessment indicates that a credit loss exists, we compare the present value of cash flows expected to be collected from the security with the amortized cost basis of the security. If the present value of cash flows expected to be collected is less than the amortized cost basis for the security, a credit loss exists and an allowance for credit losses is recorded, limited to the amount that the fair value of the security is less than its amortized cost basis. Any impairment that has not been recorded through an allowance for credit losses is recognized in other comprehensive income, net of applicable taxes. No allowance for credit losses for available for sale securities was recorded at March 31, 2020 . Approximately 95% of the Company’s investment portfolio at March 31, 2020 consisted of securities that were issued by U.S. Government agency and U.S. Government sponsored enterprises. Although a government guarantee exists on these investments, these entities are not legally backed by the full faith and credit of the federal government, and the current support they receive is subject to a cap as part of the agreement entered into in 2008. Nonetheless, at this time we do not foresee any set of circumstances in which the government would not fund its commitments on these investments as the issuers are an integral part of the U.S. housing market in providing liquidity and stability. Therefore, we concluded that a zero allowance approach for these investment securities is appropriate. The Company had also had one corporate security and four municipal securities in unrealized loss positions at March 31, 2020. The Company performed an assessment these investments for credit impairment and concluded that no allowance for credit losses was required at March 31, 2020 .

Loans Receivable and Allowance

Loans Receivable and Allowance for Credit Losses	3 Months Ended
	Mar. 31, 2020
Receivables [Abstract]
Loans Receivable and Allowance for Credit Losses	Loans Receivable and Allowance for Credit Losses On January 1, 2020, the Company adopted ASU 2016-13, or CECL, using the modified retrospective method for all financial assets measured at amortized cost and off-balance sheet credit exposures. The following is a summary of loans receivable by major category: March 31, 2020 December 31, 2019 Loan portfolio composition (Dollars in thousands) Real estate loans: Residential $ 56,727 $ 52,558 Commercial 8,342,643 8,316,470 Construction 281,852 295,523 Total real estate loans 8,681,222 8,664,551 Commercial business 3,067,132 2,721,183 Residential mortgage 786,833 835,188 Consumer and other 48,229 55,085 Loans receivable 12,583,416 12,276,007 Allowance for credit losses (144,923 ) (94,144 ) Loans receivable, net of allowance for credit losses $ 12,438,493 $ 12,181,863 Loans receivable is stated at the amount of unpaid principal, adjusted for net deferred fees and costs, premiums and discounts, purchase accounting fair value adjustments, and an allowance for credit losses. Loan balances as of December 31, 2019 have been reclassified based on the Company’s current presentation and represents amortized costs balances which are net of deferred fees and costs. Net deferred fees of $3.5 million and $2.7 million increased the carrying value of loans as of March 31, 2020 and December 31, 2019, respectively. The loan portfolio consists of four segments: real estate loans, commercial business, residential mortgage, and consumer and other. Real estate loans are extended for the purchase and refinance of commercial real estate and are generally secured by first deeds of trust and are collateralized by residential or commercial properties. Commercial business loans are loans provided to businesses for various purposes such as for working capital, purchasing inventory, debt refinancing, business acquisitions, international trade finance activities and other business related financing needs. Residential mortgage loans are extended for personal, family, or household use and are secured by a mortgage or deed of trust. Consumer and other loans consist of home equity, credit cards, and other personal loans. With the adoption of CECL, the Company reassessed its loan portfolio segments and classes of loan receivable and made changes based on the new allowance for credit losses methodology. As result, the Company now discloses residential mortgage loans as a separate segment and class of receivable. Trade finance loans, which was previously disclosed as a distinct segment and class of receivable is now combined with commercial business loans. Prior period balances have been reclassified to conform with the current presentation. The tables below detail the activity in the allowance for credit losses by portfolio segment for the three months ended March 31, 2020 and 2019 . Accrued interest receivable on loans totaled $26.1 million at March 31, 2020 and is excluded from the estimate of credit losses. During the three months ended March 31, 2020 , the Company charged off $4.7 million in PCD loans as a result of the adoption of CECL. Three Months Ended March 31, 2020 Real Estate Commercial Business Residential Mortgage Consumer and Other Total (Dollars in thousands) Balance, beginning of period $ 53,593 $ 33,032 $ 5,925 $ 1,594 $ 94,144 CECL day 1 adoption 27,791 (1,022 ) (543 ) (26 ) 26,200 Provision for credit losses 15,491 11,549 397 563 28,000 Loans charged off (2,397 ) (3,035 ) — (525 ) (5,957 ) Recoveries of charge offs 167 2,359 — 10 2,536 Balance, end of period $ 94,645 $ 42,883 $ 5,779 $ 1,616 $ 144,923 Three Months Ended March 31, 2019 Real Estate Commercial Business Residential Mortgage Consumer and Other Total (Dollars in thousands) Balance, beginning of period $ 56,767 $ 28,484 $ 5,207 $ 2,099 $ 92,557 Provision (credit) for loan losses (4,697 ) 6,718 886 93 3,000 Loans charged off (60 ) (1,408 ) (76 ) (210 ) (1,754 ) Recoveries of charge offs 1,127 158 — 7 1,292 PCI allowance adjustment — (878 ) — — (878 ) Balance, end of period $ 53,137 $ 33,074 $ 6,017 $ 1,989 $ 94,217 The following tables break out the allowance for credit losses and loan balance by measurement methodology at March 31, 2020 and December 31, 2019 : March 31, 2020 Real Estate Commercial Business Residential Mortgage Consumer and Other Total (Dollars in thousands) Allowance for credit losses: Individually evaluated $ 842 $ 4,568 $ 37 $ 81 $ 5,528 Collectively evaluated 93,803 38,315 5,742 1,535 139,395 Total $ 94,645 $ 42,883 $ 5,779 $ 1,616 $ 144,923 Loans outstanding: Individually evaluated $ 87,708 $ 27,763 $ 2,574 $ 654 $ 118,699 Collectively evaluated 8,593,514 3,039,369 784,259 47,575 12,464,717 Total $ 8,681,222 $ 3,067,132 $ 786,833 $ 48,229 $ 12,583,416 December 31, 2019 Real Estate Commercial Business Residential Mortgage Consumer and Other Total (Dollars in thousands) Allowance for loan losses: Individually evaluated for impairment $ 312 $ 3,073 $ 10 $ 7 $ 3,402 Collectively evaluated for impairment 48,616 26,914 5,913 1,220 82,663 PCI loans 4,665 3,045 2 367 8,079 Total $ 53,593 $ 33,032 $ 5,925 $ 1,594 $ 94,144 Loans outstanding: Individually evaluated for impairment $ 64,598 $ 22,842 $ 2,753 $ 301 $ 90,494 Collectively evaluated for impairment 8,502,603 2,689,468 831,259 53,872 12,077,202 PCI loans 97,764 6,900 158 747 105,569 Total $ 8,664,965 $ 2,719,210 $ 834,170 $ 54,920 $ 12,273,265 As of March 31, 2020 and December 31, 2019 , the reserve for unfunded loan commitments recorded in other liabilities was $1.2 million and $636 thousand , respectively. For the three months ended March 31, 2020 , the Company recorded additions to reserves for unfunded commitments recorded in credit related expenses totaling $610 thousand . The Company did no t set aside any reserves for unfunded commitments for the three months ended March 31, 2019 . Generally, loans are placed on nonaccrual status if 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 does not recognize interest income while loans are on nonaccrual status. The tables below represents the recorded investment of nonaccrual loans and loans past due 90 or more days and still on accrual status by class of loans and broken out by loans with an ACL and those without a recorded ACL as of March 31, 2020 and total nonaccrual loans and loans past due 90 or more days and still on accrual status by class of loans as of December 31, 2019 . Nonaccrual loans at March 31, 2020 includes $14.7 million in PCD loans (formerly PCI loans) that were previously excluded from nonaccrual status prior to the adoption of CECL. March 31, 2020 Nonaccrual with No ACL Nonaccrual with an ACL Total Nonaccrual (1) Accruing Loans Past Due 90 or More Days (Dollars in thousands) Real estate – residential $ — $ — $ — $ — Real estate – commercial Retail 5,269 1,927 7,196 — Hotel & motel 14,510 810 15,320 — Gas station & car wash 353 607 960 — Mixed use 1,043 893 1,936 — Industrial & warehouse 9,540 3,930 13,470 — Other 6,382 1,358 7,740 — Real estate – construction 10,165 — 10,165 — Commercial business 2,295 10,452 12,747 — Residential mortgage 1 2,573 2,574 — Consumer and other — 531 531 387 Total $ 49,558 $ 23,081 $ 72,639 $ 387 December 31, 2019 Nonaccrual Loans (1)(2) Accruing Loans Past Due 90 or More Days (Dollars in thousands) Real estate – residential $ — $ — Real estate – commercial Retail 2,934 449 Hotel & motel 10,901 — Gas station & car wash 271 — Mixed use 665 634 Industrial & warehouse 10,544 — Other 5,455 919 Real estate – construction 10,165 3,850 Commercial business 10,893 1,096 Residential mortgage 2,753 — Consumer and other 204 599 Total $ 54,785 $ 7,547 __________________________________ (1) Total nonaccrual loans exclude guaranteed portion of delinquent SBA loans that are in liquidation totaling $37.3 million and $29.2 million , at March 31, 2020 and December 31, 2019 , respectively. (2) Nonaccrual loans exclude PCI loans of $13.2 million at December 31, 2019. The following table presents the amortized cost basis of collateral-dependent loans as of March 31, 2020: March 31, 2020 Real Estate Collateral Other Collateral Total (Dollars in thousands) Real Estate - Residential $ — $ — $ — Real Estate - Commercial 59,080 — 59,080 Real Estate - Construction 10,165 — 10,165 Commercial Business 5,971 4,861 10,832 Residential Mortgage 1,440 — 1,440 Consumer and Other — — — Total $ 76,656 $ 4,861 $ 81,517 The reduction in interest income associated with loans on nonaccrual status was approximately $37 thousand and $769 thousand for the three months ended March 31, 2020 and 2019, respectively. The following tables present the recorded investment of past due loans, including nonaccrual loans past due 30 or more days, by the number of days past due as of March 31, 2020 and December 31, 2019 by class of loans: As of March 31, 2020 As of December 31, 2019 30-59 Days Past Due 60-89 Days Past Due 90 or More Days Past Due Total Past Due 30-59 Days 60-89 Days 90 or More Days Past Due Total (1) (Dollars in thousands) Real estate – residential $ — $ — $ — $ — $ — $ — $ — $ — Real estate – commercial Retail 585 — 6,380 6,965 1,083 1,424 3,037 5,544 Hotel & motel 10,888 1,767 11,163 23,818 1,346 936 6,409 8,691 Gas station & car wash 1,015 795 416 2,226 997 2,038 196 3,231 Mixed use 1,463 91 1,179 2,733 593 — 801 1,394 Industrial & warehouse 3,988 1,796 6,728 12,512 94 45 3,946 4,085 Other 2,343 115 3,452 5,910 811 785 3,704 5,300 Real estate – construction 8,613 — 10,165 18,778 — — 14,015 14,015 Commercial business 4,620 653 7,481 12,754 401 352 5,717 6,470 Residential mortgage 11,181 619 1,925 13,725 9,676 792 2,038 12,506 Consumer and other 636 104 733 1,473 176 122 614 912 Total Past Due $ 45,332 $ 5,940 $ 49,622 $ 100,894 $ 15,177 $ 6,494 $ 40,477 $ 62,148 __________________________________ (1) Past due loans at December 31, 2019 exclude PCI loans totaling $15.0 million . 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. Homogeneous loans (i.e., home mortgage loans, home equity lines of credit, overdraft loans, express business loans, and automobile loans) are not risk rated and credit risk is analyzed largely by the number of days past due. 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 deserve 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 Company 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 presents by credit quality indicator, loan class, and year of origination, the amortized cost basis of the Company’s loans receivable as of as of March 31, 2020 . As of March 31, 2020 Term Loan by Origination Year Revolving Loans Total 2020 2019 2018 2017 2016 Prior (Dollars in thousands) Real Estate - Residential Pass/Not Rated $ 3,192 $ 16,669 $ 11,741 $ 4,815 $ 8,429 $ 5,805 $ 5,621 $ 56,272 Special mention — — — — — — — — Substandard — — 143 — — 312 — 455 Doubtful/Loss — — — — — — — — Subtotal $ 3,192 $ 16,669 $ 11,884 $ 4,815 $ 8,429 $ 6,117 $ 5,621 $ 56,727 Real Estate - Commercial Pass/Not Rated $ 425,593 $ 1,627,041 $ 1,678,190 $ 1,386,616 $ 935,192 $ 1,891,862 $ 101,870 $ 8,046,364 Special mention — 17,222 16,163 7,159 7,737 28,113 — 76,394 Substandard — 3,372 10,840 22,044 30,302 150,132 3,195 219,885 Doubtful/Loss — — — — — — — — Subtotal $ 425,593 $ 1,647,635 $ 1,705,193 $ 1,415,819 $ 973,231 $ 2,070,107 $ 105,065 $ 8,342,643 Real Estate - Construction Pass/Not Rated $ 9,276 $ 34,362 $ 99,616 $ 80,338 $ 10,294 $ 4,601 $ — $ 238,487 Special mention — — — 9,435 5,774 9,931 — 25,140 Substandard — — — 10,165 — 8,060 — 18,225 Doubtful/Loss — — — — — — — — Subtotal $ 9,276 $ 34,362 $ 99,616 $ 99,938 $ 16,068 $ 22,592 $ — $ 281,852 Commercial Business Pass/Not Rated $ 389,340 $ 801,118 $ 301,969 $ 169,835 $ 106,825 $ 75,423 $ 1,165,155 $ 3,009,665 Special mention — 2,649 5,188 43 297 6 12,412 20,595 Substandard 540 1,853 7,835 4,180 7,826 4,870 9,756 36,860 Doubtful/Loss — — — — — 12 — 12 Subtotal $ 389,880 $ 805,620 $ 314,992 $ 174,058 $ 114,948 $ 80,311 $ 1,187,323 $ 3,067,132 Residential Mortgage Pass/Not Rated $ 3,367 $ 143,296 $ 300,555 $ 214,927 $ 72,358 $ 49,601 $ — $ 784,104 Special mention — — — — — — — — Substandard — 123 225 — 1,719 662 — 2,729 Doubtful/Loss — — — — — — — — Subtotal $ 3,367 $ 143,419 $ 300,780 $ 214,927 $ 74,077 $ 50,263 $ — $ 786,833 Consumer and Other Pass/Not Rated $ 275 $ 2,004 $ 3,083 $ 3,621 $ 6,865 $ 3,470 $ 28,144 $ 47,462 Special mention — — — 144 — 6 — 150 Substandard — — 5 — 31 581 — 617 Doubtful/Loss — — — — — — — — Subtotal $ 275 $ 2,004 $ 3,088 $ 3,765 $ 6,896 $ 4,057 $ 28,144 $ 48,229 Total Loans Pass/Not Rated $ 831,043 $ 2,624,490 $ 2,395,154 $ 1,860,152 $ 1,139,963 $ 2,030,762 $ 1,300,790 $ 12,182,354 Special mention — 19,871 21,351 16,781 13,808 38,056 12,412 122,279 Substandard 540 5,348 19,048 36,389 39,878 164,617 12,951 278,771 Doubtful/Loss — — — — — 12 — 12 Total $ 831,583 $ 2,649,709 $ 2,435,553 $ 1,913,322 $ 1,193,649 $ 2,233,447 $ 1,326,153 $ 12,583,416 For the three months ended March 31, 2020 , there were no revolving loans converted to term loans. The following presents by loan class and credit quality indicator, the recorded investment in the Company’s loans and leases as of December 31, 2019. As of December 31, 2019 Pass/Not Rated Special Mention Substandard Doubtful Total (Dollars in thousands) Real estate – residential $ 51,977 $ — $ 460 $ — $ 52,437 Real estate – commercial Retail 2,206,855 32,920 48,761 — 2,288,536 Hotel & motel 1,630,045 1,395 32,158 — 1,663,598 Gas station & car wash 831,840 2,161 7,513 — 841,514 Mixed use 699,454 4,906 16,355 — 720,715 Industrial & warehouse 973,442 11,680 45,754 — 1,030,876 Other 1,698,267 25,416 47,460 — 1,771,143 Real estate – construction 253,766 24,641 17,739 — 296,146 Commercial business 2,641,936 38,167 39,094 13 2,719,210 Residential mortgage 831,139 — 3,031 — 834,170 Consumer and other 53,801 166 953 — 54,920 Total $ 11,872,522 $ 141,452 $ 259,278 $ 13 $ 12,273,265 The Company may reclassify 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 for 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 for investment to held for sale for the three months ended March 31, 2020 and 2019 is presented in the following table: Three Months Ended March 31, 2020 2019 Transfer of loans held for investment to held for sale (Dollars in thousands) Real estate - commercial $ — $ — Residential mortgage 1,002 33,390 Total $ 1,002 $ 33,390 On January 1, 2020 the Company adopted ASU 2016-13, “Measurement of Credit Losses on Financial Instruments”, or CECL which significantly changed the credit losses estimation model for loans and investments. The discussion below relates to the Company’s CECL allowance for credit losses (“ACL”) methodology. For a discussion of the Company’s former incurred loss allowance for loan losses methodology, please refer to the Company’s Annual Report on Form 10-K for the year ended December 31, 2019. The Company calculates its ACL by estimating expected credit losses on a collective basis for loans that share similar risk characteristics. Loans that do not share similar risk characteristics with other loans are evaluated on an individual basis. The Company uses a combination of a modeled and non-modeled approach that incorporates current and future economic conditions to estimate lifetime expected losses on a collective basis. The Company uses Probability of Default (“PD”), Loss Given Default (“LGD”) and Exposure at Default (“EAD”) methodologies with quantitative factors and qualitative considerations in calculation of the allowance for credit losses for collectively assessed loans. The Company uses a reasonable and supportable period of 2 years at which point loss assumptions revert back to historical loss information by means of 1 year reversion period. The ACL for the Company’s construction, credit card, and certain consumer loans is calculated based on a non-modeled approach utilizing historical loss rate approach to estimate losses. A non-modeled approach was chosen for these loans as fewer data points exist which could result in high levels of estimated loss volatility under a modeled approach. In aggregate non-modeled loans represented less than 3% of the Company’s total loan portfolio as of March 31, 2020. With the adoption of CECL, the Company formed an Economic Forecast Committee (“EFC”) to review economic forecast scenarios that are incorporated in the Company’s ACL. The EFC reviews multiple scenarios provided to the Company by an independent third party and chooses a single scenario that best aligns with management’s expectation of future economic conditions. The forecast scenario contains certain macroeconomic variables that are incorporated into the Company’s modeling process, including GDP, unemployment rates, interest rates, and housing prices. As of March 31, 2020, the Company chose a forecast scenario that incorporates the effect of the recent COVID-19 pandemic into estimates of future economic conditions. The scenario assumes a large decline in GDP and an increase in unemployment for the second quarter of 2020 followed by a return to GDP growth by the end of 2020, while unemployment remains slightly elevated through 2023. Subsequent to the completion of the ACL calculation as of March 31, 2020, the Company received updated macroeconomic forecast scenarios in April 2020, which reflects more projected deterioration in GDP and unemployment compared to the scenario incorporated into the Company’s ACL as of March 31, 2020. The updated April 2020 forecast scenario information was not reflected in the Company’s ACL as of March 31, 2020. If those forecasts remain unchanged or decline further, the Company would expect additional increases in ACL and additional provision for credit losses expense. Additionally, in order to systematically quantify the credit risk impact of other trends and changes within the loan portfolio, the Company utilizes qualitative adjustments to the modeled and non-modeled estimated loss approaches. The parameters for making adjustments are established under a Credit Risk Matrix that provides different possible scenarios for each of the factors below. The Credit Risk Matrix and the possible scenarios enable the Bank to qualitatively adjust the Loss Migration Ratio by as much as 25 basis points for each loan type pool. This matrix considers the following seven factors, which are patterned after the guidelines provided under the Federal Financial Institutions Examination Council (“FFIEC”) Interagency Policy Statement on the Allowance for Loan and Lease Losses, updated to reflect the adoption of CECL: • Changes in lending policies and procedures, including underwriting standards and collection, charge off, and recovery practices; • 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; • 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, legal requirements, and regulatory requirements on the level of estimated losses in the loan portfolio. For loans which do not share the similar risk characteristics such as nonaccrual and TDR loans above $500 thousand, the Company evaluates these loans on an individual basis in accordance with ASC 326. These nonaccrual and TDR loans are considered to have a different risk profiles than performing loans and therefore are evaluated separately from performing loan pools. The Company decided to collectively assess the TDRs and nonaccrual loans with balances below $500 thousand along with the performing and accrual loans in order to reduce the operational burden of individually assessing small TDR and nonaccrual loans with immaterial balances. For these individually assessed loans, the ACL is measured using 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 loans, management obtains a new appraisal to determine the fair value of collateral. 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 amortized balance the loan, the Company recognizes an ACL with a corresponding charge to the provision for credit losses. The Company maintains a separate ACL for its off-balance sheet unfunded loan commitments. The Company uses a funding rate to allocate the allowance to undrawn exposures. This funding rate is used as a credit conversion factor to capture how much undrawn can potentially become drawn at any point. Funding rate is determined based on a lookback period of 8 quarters. Credit loss is not estimated for off-balance sheet credit exposures that are unconditionally cancellable by the Company. The following table presents breakdown of loans by recorded ACL broken out by loans evaluated individually and collectively at March 31, 2020 and December 31, 2019 : As of March 31, 2020 Real Estate – Residential Real Estate – Commercial Real Estate – Construction Commercial Business Residential Mortgage Consumer and Other Total (Dollars in thousands) Individually evaluated loans $ — $ 77,543 $ 10,165 $ 27,763 $ 2,574 $ 654 $ 118,699 ACL on individually evaluated loans $ — $ 842 $ — $ 4,568 $ 37 $ 81 $ 5,528 Individually evaluated loans ACL coverage N/A 1.09 % N/A 16.45 % 1.44 % 12.39 % 4.66 % Collectively evaluated loans $ 56,727 $ 8,265,100 $ 271,687 $ 3,039,369 $ 784,259 $ 47,575 $ 12,464,717 ACL on collectively evaluated loans $ 399 $ 91,718 $ 1,686 $ 38,315 $ 5,742 $ 1,535 $ 139,395 Collectively evaluated loans ACL coverage 0.70 % 1.11 % 0.62 % 1.26 % 0.73 % 3.23 % 1.12 % Total loans $ 56,727 $ 8,342,643 $ 281,852 $ 3,067,132 $ 786,833 $ 48,229 $ 12,583,416 Total ACL $ 399 $ 92,560 $ 1,686 $ 42,883 $ 5,779 $ 1,616 $ 144,923 Total ACL to total loans 0.70 % 1.11 % 0.60 % 1.40 % 0.73 % 3.35 % 1.15 % As of December 31, 2019 Real Estate – Residential Real Estate – Commercial Real Estate – Construction Commercial Business Residential Mortgage Consumer and Other Total (Dollars in thousands) Impaired loans (recorded investment) $ — $ 54,433 $ 10,165 $ 22,842 $ 2,753 $ 301 $ 90,494 Specific allowance $ — $ 312 $ — $ 3,073 $ 10 $ 7 $ 3,402 Specific allowance to impaired loans N/A 0.57 % N/A 13.45 % 0.36 % 2.33 % 3.76 % Other loans $ 52,437 $ 8,261,949 $ 285,981 $ 2,696,368 $ 831,417 $ 54,619 $ 12,182,771 General allowance $ 204 $ 51,400 $ 1,677 $ 29,959 $ 5,915 $ 1,587 $ 90,742 General allowance to other loans 0.39 % 0.62 % 0.59 % 1.11 % 0.71 % 2.91 % 0.74 % Total loans $ 52,437 $ 8,316,382 $ 296,146 $ 2,719,210 $ 834,170 $ 54,920 $ 12,273,265 Total allowance for loan losses $ 204 $ 51,712 $ 1,677 $ 33,032 $ 5,925 $ 1,594 $ 94,144 Total allowance to total loans 0.39 % 0.62 % 0.57 % 1.21 % 0.71 % 2.90 % 0.77 % Under certain circumstances, the Company provides borrowers relief through loan modifications. These modifications are either temporary in nature (“temporary modifications”) or are more substantive. The temporary modifications generally consist of interest only payments for a three to six month period, whereby principal payments are deferred. At the end of the modification period, the remaining principal balance is re-amortized based on the original maturity date. Loans subject to temporary modifications are generally downgraded to Special Mention or Substandard. At the end of the modification period, the loan either 1) returns to the original contractual terms; 2) is further modified and accounted for as a troubled debt restructuring in accordance with ASC 310-10-35; or 3) is disposed of through foreclosure or liquidation. TDR loans are evaluated for individually in accordance with ASC 310 and ASC 326. The concessions may be granted in various forms, including reduction in the stated interest rate, reduction in the amount of principal amortization, forgiveness of a portion of a loan balance or accrued interest, or extension of the maturity date. In order to determine whether a borrower is experiencing financial difficulty, an evaluation is performed on the probability that the borrower will be in payment default on their debt in the foreseeable future without the modification. This evaluation is performed under the Bank’s internal underwriting policy. At March 31, 2020 , total TDR loans were $61.2 million , compared to $46.7 million at December 31, 2019 . A summary of the recorded investment of TDR loans on accrual and nonaccrual status by type of concession as of March 31, 2020 and December 31, 2019 is presented below: As of March 31, 2020 TDR Loans on Accrual Status TDR Loans on Nonaccrual Status Total TDRs Real Estate Commercial Business Residential Mortgage Other Real Estate Commercial Business Residential Mortgage Other (Dollars in thousands) Payment concession $ 6,134 $ 822 $ — $ 50 $ 8,460 $ 243 $ — $ — $ 15,709 Maturity / amortization concession 18,592 12,088 — 73 1,497 5,202 120 37,572 Rate concession 5,925 105 — — 453 1,443 — 7,926 Total $ 30,651 $ 13,015 $ — $ 123 $ 10,410 $ 6,888 $ — $ 120 $ 61,207 As of December 31, 2019 TDR Loans on Accrual Status TDR Loans on Nonaccrual Status Total TDRs Real Estate Commercial Business Residential Mortgage Other Real Estate Commercial Business Residential Mortgage Other (Dollars in thousands) Payment concession $ 4,708 $ 886 $ — $ 54 $ 4,306 $ 259 $ — $ — $ 10,213 Maturity / amortization concession 14,537 10,778 — 43 — 5,931 — 122 31,411 Rate concession 4,419 181 — 103 334 65 — — 5,102 Total $ 23,664 $ 11,845 $ — $ 200 $ 4,640 $ 6,255 $ — $ 122 $ 46,726 TDR loans on accrual status are comprised of loans that were accruing at the time of restructuring and for which the Company anticipates full repayment of both principal and interest under the restructured terms. TDR loans that are on nonaccrual status can be returned to accrual status after a period of sustained performance, generally determined to be six months of timely payments as modified. Sustained performance includes the periods prior to the modification if the prior performance met or exceeded the modified terms. TDR loans on accrual status at March 31, 2020 were comprised of 30 commercial real estate loans totaling $30.7 million , 43 commercial business loans totaling $13.0 million , and 16 consumer and other loans totaling $123 thousand . TDR loans on accrual status at December 31, 2019 were comprised of 15 commercial real estate loans totaling $23.7 million , 27 commercial business loans totaling $11.8 million and 12 consumer and other loans totaling $200 thousand . The Company expects that TDR loans on accrual status as of March 31, 2020 , which were all performing in accordance with their restructured terms, to continue to comply with the restructured terms because of the reduced principal or interest payments on these loans. TDR loans that were restructured at market interest rates and had sustained performance as agreed under the modified loan terms may be reclassified as non-TDR after each year end but are reserved for under ASC 310-10. The Company recorded an allowance totaling $8.6 million and $3.1 million for TDR loans as of March 31, 2020 and December 31, 2019 , respectively. The following tables present the recorded investment of loans classified as TDR during the three months ended March 31, 2020 and 2019 by class of loans: Three Months Ended March 31, 2020 Three Months Ended March 31, 2019 Number of Pre- Post- Number of Loans Pre- Modification Post- Modification (Dollars in thousands) Real estate – residential — $ — $ — — $ — $ — Real estate – commercial Retail — — — 1 101 101 Hotel & motel — — — 1 152 152 Gas station & car wash 1 54 54 — — — Mixed use — — — — — — Industrial & warehouse 1 261 261 — — — Other 1 788 788 1 140 140 Real estate – construction — — — — — — Commercial business 1 294 294 7 5,407 5,407 Residential mortgage — — — — — — Consumer and other 1 18 18 6 33 33 Total 5 $ 1,415 $ 1,415 16 $ 5,833 $ 5,833 For TDRs modified during the three months ended March 31, 2020 , the Company recorded $49 thousand in ACL. Total charge-offs of TDR loans modified during the three months ended March 31, 2020 totaled $0 . For TDR loans modified during the three months ended March 31, 2019 , the Company recorded $1.6 million in allowance. There were no charge-offs of TDR loans modified during the three months ended March 31, 2019 . The following table presents loans modified as TDRs within the previous twelve months ended March 31, 2020 and 2019 that subsequently had payment defaults during the three months ended March 31, 2020 and 2019 : Three Months Ended March 31, 2020 Three Months Ended March 31, 2019 Number of Loans Balance Number of Loans Balance (Dollars in thousands) Real estate – commercial Retail — $ — 1 $ 48 Hotel & motel — — 1 73 Gas station & car wash — — — — Mixed Use — — — — Industrial & warehouse — — 1 236 Other 2 293 — — Real estate – construction — — — — Commercial business 2 292 7 5,311 Residential mortgage — — — — Consumer and other 3 10 1 5 Total 7 $ 595 11 $ 5,673 A loan is considered to be in payment default once it is 30 days contractually past due under the modified terms. The Company recorded $136 thousand in ACL for TDR loans that had payment defaults during the three months ended March 31, 2020 . Total charge offs for TDR loans that had payment defaults during the three months ended March 31, 2020 was $14 thousand . The Company recorded $134 thousand in allowance for the TDR loans that had payment defaults during the three months ended March 31, 2019 . There were no charge offs for TDR loans that had payment defaults during the three months ended March 31, 2019 .

Leases

Leases	3 Months Ended
	Mar. 31, 2020
Leases [Abstract]
Leases	Leases On January 1, 2019, the Company adopted ASU 2016-02, “Leases (Topic 842)”, using the modified retrospective approach under ASC 842. The Company’s operating leases are real estate leases which are comprised of bank branches, loan production offices, and office spaces with remaining lease terms ranging from 1 to 11 years as of March 31, 2020 . Certain lease arrangements contain extension options which are typically around 5 years . As these extension options are not generally considered reasonably certain of exercise, they are not included in the lease term. At March 31, 2020 , operating lease right-of-use (“ROU”) assets and related liabilities were $56.7 million and $58.8 million , respectively. At March 31, 2020 , the short term operating lease liability totaled $13.0 million and the long-term operating lease liability totaled $45.8 million . The Company defines short-term operating lease liabilities as liabilities due in twelve months or less and long term lease liabilities are defined as liabilities that are due in more than twelve months at the end of each reporting period. The Company did not have any finance leases at March 31, 2020 . During the three months ended March 31, 2020 , the Company extended three leases and had no new leases. Lease extensions were for five years each and the Company reassessed the ROU asset and lease liability related to these leases. Operating lease ROU assets represent the Company’s right to use the underlying asset during the lease term and operating lease liabilities represent the Company’s obligation to make lease payments arising from the lease. ROU assets and operating lease liabilities are recognized at lease commencement based on the present value of the remaining lease payments using the Company’s incremental borrowing rate at the lease commencement date. Operating lease expense, which is comprised of amortization of the ROU asset and the implicit interest accreted on the operating lease liability, is recognized on a straight-line basis over the lease term and is recorded in occupancy expense in the Consolidated Statements of Income. The Company’s occupancy expense also includes variable lease costs which is comprised of the Company's share of actual costs for utilities, common area maintenance, property taxes, and insurance that are not included in lease liabilities and are expensed as incurred. Variable lease costs can also include rent escalations based on changes to indices, such as the Consumer Price Index, where the Company estimates future rent increases and records the actual difference to variable costs. The Company uses its incremental borrowing rate to present value lease payments in order to recognize a ROU asset and the related lease liability. The Company calculates its incremental borrowing rate by adding a spread to the FHLB borrowing interest rate at a given period. The table below summarizes the Company’s net lease cost: Three Months Ended Three Months Ended (Dollars in thousands) Operating lease cost $ 3,945 $ 4,123 Short term lease cost — 9 Variable lease cost 767 703 Sublease income (212 ) (157 ) Net lease cost $ 4,500 $ 4,678 Rent expense for the three months ended March 31, 2020 and 2019 was $4.5 million and $4.7 million , respectively. The table below summarizes other information related to the Company’s operating leases: At or for the Three Months Ended At or for the Three Months Ended (Dollars in thousands) Cash paid for amounts included in the measurement of lease liabilities: Operating cash outflows for operating leases $ 3,724 $ 3,663 Right-of-use assets obtained in exchange for lease liabilities, net 1,279 62,360 Weighted-average remaining lease term - operating leases 5.7 years 6.2 years Weighted-average discount rate - operating leases 3.07 % 3.20 % The table below summarizes the maturity of remaining lease liabilities: March 31, 2020 (Dollars in thousands) 2020 $ 11,014 2021 14,127 2022 10,038 2023 7,905 2024 6,357 2025 and thereafter 15,042 Total lease payments 64,483 Less: imputed interest 5,656 Total lease obligations $ 58,827 As of March 31, 2020 , the Company did not have any additional operating lease commitments that have not yet commenced.

Deposits

Deposits	3 Months Ended
	Mar. 31, 2020
Banking and Thrift [Abstract]
Deposits	Deposits The aggregate amount of time deposits in denominations of more than $250 thousand at March 31, 2020 and December 31, 2019 , was $1.85 billion and $1.86 billion , respectively. Included in time deposits of more than $250 thousand were $300.0 million in California State Treasurer’s deposits at March 31, 2020 and December 31, 2019 . The California State Treasurer’s deposits are subject to withdrawal based on the State’s periodic evaluations. The Company is required to pledge eligible collateral of at least 110% of outstanding deposits. At March 31, 2020 and December 31, 2019 , securities with fair values of approximately $339.8 million and $333.2 million , respectively, were pledged as collateral for the California State Treasurer’s deposit. The Company also utilizes brokered deposits as a secondary source of funds. Total brokered deposits at March 31, 2020 and December 31, 2019 , totaled $1.75 billion and $1.48 billion , respectively. Brokered deposits at March 31, 2020 consisted of $1.11 billion in money market and NOW accounts, and $647.3 million in time deposits accounts. Brokered deposits at December 31, 2019 consisted of $538.2 million in money market and NOW accounts and $1.20 billion

Borrowings

Borrowings	3 Months Ended
	Mar. 31, 2020
Debt Disclosure [Abstract]
Borrowings	Borrowings The Company maintains a line of credit with the Federal Home Loan Bank (“FHLB”) of San Francisco 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 $3.92 billion at March 31, 2020 , and $3.85 billion at December 31, 2019 . The terms of this credit facility require the Company to pledge eligible collateral with the FHLB equal to at least 100% of outstanding advances. The Company also has an unsecured credit facility with the FHLB that totaled $95.0 million at both March 31, 2020 and December 31, 2019 . At March 31, 2020 and December 31, 2019 , real estate secured loans with a carrying amount of approximately $7.04 billion and $6.76 billion , respectively, were pledged at the FHLB for outstanding advances and remaining borrowing capacity. At March 31, 2020 and December 31, 2019 , other than FHLB stock, no securities were pledged as collateral at the 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 FHLB stock based on outstanding borrowings. At March 31, 2020 and December 31, 2019 , FHLB advances totaled $675.0 million and $625.0 million , respectively, and had weighted average interest rates of 1.41% and 1.84% , respectively. FHLB advances at March 31, 2020 and December 31, 2019 had various maturities through December 2022 . The interest rate of FHLB advances as of March 31, 2020 ranged between 0.21% and 2.39% . At March 31, 2020 , the Company’s remaining borrowing capacity with the FHLB was $3.20 billion . Although the Company maintains borrowing lines with other banks, there were no federal funds purchased from other banks at March 31, 2020 and December 31, 2019 . At March 31, 2020 , the contractual maturities for outstanding FHLB advances were as follows: March 31, 2020 Scheduled maturities in: (Dollars in thousands) 2020 $ 385,000 2021 145,000 2022 145,000 Total $ 675,000 As a member of the Federal Reserve Bank (“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 fair market value of the qualifying loans and securities that are pledged. At March 31, 2020 , the outstanding principal balance of the qualifying loans pledged at the FRB was $960.1 million and there were no investment securities pledged to borrow against the discount window. At March 31, 2020 and December 31, 2019 , the total available borrowing capacity at the FRB discount window was $762.1 million and $740.6 million , respectively. There were no borrowings outstanding at the FRB discount window as of March 31, 2020 and December 31, 2019 .

Subordinated Debentures and Con

Subordinated Debentures and Convertible Notes	3 Months Ended
	Mar. 31, 2020
Subordinated Borrowings [Abstract]
Subordinated Debentures and Convertible Notes	Subordinated Debentures and Convertible Notes Subordinated Debt At March 31, 2020 , 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 has the right to redeem the Debentures in whole (but not in part) on a quarterly basis at a redemption price specified in the indentures plus any accrued but unpaid interest to the redemption date. The Company also has a right to defer consecutive payments of interest on the debentures for up to five years . The following table is a summary of trust preferred securities and Debentures at March 31, 2020 : 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 3.89% 06/15/2033 Nara Statutory Trust IV 12/22/2003 5,000 5,155 Variable 4.68% 01/07/2034 Nara Statutory Trust V 12/17/2003 10,000 10,310 Variable 3.79% 12/17/2033 Nara Statutory Trust VI 03/22/2007 8,000 8,248 Variable 2.39% 06/15/2037 Center Capital Trust I 12/30/2003 18,000 14,290 Variable 4.68% 01/07/2034 Wilshire Trust II 03/17/2005 20,000 15,799 Variable 2.63% 03/17/2035 Wilshire Trust III 09/15/2005 15,000 11,181 Variable 2.14% 09/15/2035 Wilshire Trust IV 07/10/2007 25,000 18,114 Variable 2.12% 09/15/2037 Saehan Capital Trust I 03/30/2007 20,000 15,066 Variable 2.99% 06/30/2037 Total $ 126,000 $ 103,318 The carrying value of Debentures at March 31, 2020 and December 31, 2019 was $103.3 million and $103.0 million , respectively. At March 31, 2020 and December 31, 2019 , acquired Debentures had remaining discounts of $26.6 million and $26.9 million , respectively. The carrying balance of Debentures is net of remaining discounts and includes common trust securities. The Company’s investment in the common trust securities of the issuer trusts was $3.9 million at March 31, 2020 and December 31, 2019 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 Statements of Financial Condition, the debt is treated as capital for regulatory purposes. The Company’s trust preferred security debt issuances (less common trust securities) are includable in Tier 1 capital up to a maximum of 25% of capital on an aggregate basis as they were grandfathered in under BASEL III. Any amount that exceeds 25% qualifies as Tier 2 capital. Convertible Notes In 2018, the Company issued $200 million aggregate principal amount of 2.00% convertible senior notes maturing on May 15, 2038 in a private offering to qualified institutional buyers under Rule 144A of the Securities Act of 1933. Subsequently on June 7, 2018, an additional $17.5 million in convertible notes were issued as part of the initial offering over-allotment option. In total, the Company issued $217.5 million in convertible notes during the second quarter of 2018. The convertible notes can be converted into shares of the Company’s common stock at an initial rate of 45.0760 shares per $1,000 principal amount of the notes (equivalent to an initial conversion price of approximately $22.18 per share of common stock which represents a premium of 22.5% to the closing stock price on the date of the pricing of the notes). Holders of the convertible notes have the option to convert all or a portion of the notes at any time on or after February 15, 2023. Prior to February 15, 2023, the convertible notes cannot be converted unless under certain specified scenarios. The convertible notes can be called by the Company, in part or in whole, on or after May 20, 2023 for 100% of the principal amount in cash. Holders of the convertible notes also have the option to put the notes back to the Company on May 15, 2023, May 15, 2028, or May 15, 2033 for 100% of the principal amount in cash. The convertible notes can be settled in cash, stock, or a combination of stock and cash at the option of the Company. The convertible notes were issued as part of the Company’s plan to repurchase its common stock. The net proceeds from the offering, after deducting the initial purchaser’s discount, was approximately $213.2 million . Of the total net proceeds, $113.2 million was down-streamed to the Bank as equity and the remaining $100.0 million was allocated for share repurchases. In accordance with accounting principles, the convertible notes issued by the Company were separated into a debt component and an equity component which represents the stock conversion option. The present value of the convertible notes was calculated based on a discount rate of 4.25% , which represented the current offering rate for similar types of debt without conversion options. The effective life of the convertible notes was estimated to be five years based on the first call and put date. The difference between the principal amount of the notes and the present value was recorded as the convertible note discount and additional paid-in capital. The issuance costs related to the offering were also allocated into a debt component to be capitalized, and an equity component in the same percentage allocation of debt and equity of the convertible note. The value of the convertible note at issuance and carrying value as of March 31, 2020 and December 31, 2019 is presented in the tables below: As of March 31, 2020 Amortization/ Capitalization Period Gross Accumulated Carrying Amount (Dollars in thousands) Convertible notes principal balance $ 217,500 $ — $ 217,500 Discount 5 years (21,880 ) 7,715 (14,165 ) Issuance costs to be capitalized 5 years (4,119 ) 1,500 (2,619 ) Carrying balance of convertible notes $ 191,501 $ 9,215 $ 200,716 As of December 31, 2019 Amortization/ Capitalization Period Gross Accumulated Carrying Amount (Dollars in thousands) Convertible notes principal balance $ 217,500 $ — $ 217,500 Discount 5 years (21,880 ) 6,659 (15,221 ) Issuance costs to be capitalized 5 years (4,119 ) 1,298 (2,821 ) Carrying balance of convertible notes $ 191,501 $ 7,957 $ 199,458 Interest expense on the convertible notes for the three months ended March 31, 2020 and 2019 , both totaled $2.3 million . Interest expense for the Company’s convertible notes includes accrued interest on the convertible note coupon, non-cash interest expense representing the conversion option or note discount, and interest expense from capitalized issuance costs. Non-cash interest expense and issuance cost capitalization expense will only be recorded for the first five outstanding years of the convertible notes. Subsequent to May 15, 2023, interest expense on the convertible notes will consist of only accrued interest on the coupon.

Derivative Financial Instrument

Derivative Financial Instruments	3 Months Ended
	Mar. 31, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	Derivative Financial Instruments The Company offers a loan hedging program to certain loan customers. Through this program, the Company originates a variable rate loan with the customer. The Company and the customer will then enter into a fixed interest rate swap. Lastly, an identical offsetting swap is entered into by the Company with a correspondent bank. These “back-to-back” swap arrangements are intended to offset each other and allow the Company to book a variable rate loan, while providing the customer with a contract for fixed interest payments. In these arrangements, the Company’s net cash flow is equal to the interest income received from the variable rate loan originated with the customer. These customer swaps are not designated as hedging instruments and are recorded at fair value in other assets and other liabilities. The changes in fair value is recognized in the income statement in other income and fees. At March 31, 2020 and December 31, 2019 , interest rate swaps related to the Company’s loan hedging program that were outstanding is presented in the following table: March 31, 2020 December 31, 2019 (Dollars in thousands) Interest rate swaps on loans with correspondent banks Notional amount $ — $ 137,890 Weighted average remaining term (years) — 7.2 Pay fixed rate (weighted average) — % 3.62 % Received variable rate (weighted average) — % 3.83 % Estimated fair value $ — $ 739 Interest rate swaps on loans with correspondent banks Notional amount $ 448,308 $ 282,326 Weighted average remaining term (years) 7.0 6.9 Pay fixed rate (weighted average) 3.35 % 4.48 % Received variable rate (weighted average) 4.03 % 3.98 % Estimated fair value $ (37,890 ) $ (9,614 ) Back to back interest rate swaps with loan customers Notional amount $ — $ 137,890 Weighted average remaining term (years) — 7.2 Received fixed rate (weighted average) — % 3.62 % Pay variable rate (weighted average) — % 3.83 % Estimated fair value $ — $ (739 ) Back to back interest rate swaps with loan customers Notional amount $ 448,308 $ 282,326 Weighted average remaining term (years) 7.0 6.9 Received fixed rate (weighted average) 4.03 % 4.48 % Pay variable rate (weighted average) 3.35 % 3.98 % Estimated fair value $ 37,890 $ 9,614 The Company enters into various stand-alone mortgage-banking derivatives in order to hedge the risk associated with the fluctuation of interest rates. Changes in fair value are recorded as mortgage banking revenue. Residential mortgage loans funded with interest rate lock commitments and forward commitments for the future delivery of mortgage loans to third party investors are considered derivatives. At March 31, 2020 , the Company had approximately $65.2 million in interest rate lock commitments and total forward sales commitments for the future delivery of residential mortgage loans. At December 31, 2019 , the Company had approximately $10.5 million in interest rate lock commitments and total forward sales commitments for the future delivery of residential mortgage loans. The following table reflects the notional amount and fair value of mortgage banking derivatives for the dates indicated: As of March 31, 2020 As of December 31, 2019 Notional Amount Fair Value Notional Amount Fair Value (Dollars in thousands) Assets: Interest rate lock commitments $ 46,818 $ 444 $ 10,540 $ 84 Forward sale contracts related to mortgage banking $ 39,840 $ 478 $ 4,532 $ 11 Liabilities: Interest rate lock commitments $ 18,367 $ (112 ) $ — $ — Forward sale contracts related to mortgage banking $ 25,345 $ (170 ) $ 6,008 $ (16 )

Commitments and contingencies

Commitments and contingencies	3 Months Ended
	Mar. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies In the normal course of business, the Company is a party to financial instruments with off-balance sheet risk that are used to meet the financing needs of customers. These financial instruments include commitments to extend credit, standby letters of credit, commercial letters of credit, commitments to fund investments in affordable housing partnerships, and mortgage derivatives. These instruments involve, to varying degrees, elements of credit and interest rate risk in excess of the amount recognized in the Consolidated Statements of Financial Condition. The Company’s exposure to credit loss in the event of nonperformance on commitments to extend credit and standby letters of credit is represented by the contractual notional amount of those instruments. The Company uses the same credit policies in making commitments and conditional obligations as the Company does for extending loan facilities to customers. The Company evaluates each customer’s creditworthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary upon extension of credit, is based on the Company’s credit evaluation of the counterparty. The types of collateral that the Company may hold can vary and may include accounts receivable, inventory, property, plant and equipment, and income-producing properties. Commitments at March 31, 2020 and December 31, 2019 are summarized as follows: March 31, 2020 December 31, 2019 (Dollars in thousands) Commitments to extend credit $ 1,645,443 $ 1,864,947 Standby letters of credit 126,448 113,720 Other letters of credit 28,924 37,627 Commitments to fund investments in affordable housing partnerships 20,688 28,480 In the normal course of business, the Company is involved in various legal claims. The Company has reviewed all legal claims against the Company with counsel and has taken into consideration the views of such counsel as to the potential outcome of the claims. Loss contingencies for all legal claims totaled $595 thousand at March 31, 2020 and $440 thousand at December 31, 2019 . It is reasonably possible the Company may incur losses in addition to the amounts currently accrued. However, at this time, the Company is unable to estimate the range of additional losses that are reasonably possible because of a number of factors, including the fact that certain of these litigation matters are still in their early stages and involve claims that the Company believes has little to no merit. The Company has considered these and other possible loss contingencies and does not expect the amounts to be material to the consolidated financial statements.

Goodwill, Intangible Assets, an

Goodwill, Intangible Assets, and Servicing Assets	3 Months Ended
	Mar. 31, 2020
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, 2019, the Company 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 of the Company was less than its carrying amount. As the Company operates as single business unit, goodwill impairment is assessed based on the Company as a whole. 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 the Company exceeded the carrying value. Goodwill is not amortized for book purposes and is not tax deductible. Due to the recent COVID-19 pandemic, economic forecasts for the future economic performance has deteriorated substantially. In addition, US equity markets experienced significant declines during the first quarter of 2020. In line with these trends, the Company’s stock price also experienced a large decline during the first quarter of 2020. These factors contributed to the Company performing an interim goodwill impairment analysis during the first quarter of 2020. The Company assessed qualitative factors related to goodwill for the quarter ended March 31, 2020 and determined that it was more-likely-than-not that goodwill was not impaired and that the fair value of goodwill exceeded the carrying value. Therefore, there was no impairment of goodwill recorded during the three months ended March 31, 2020 . The carrying amount of the Company’s goodwill as of March 31, 2020 and December 31, 2019 was $464.5 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 $531 thousand and $557 thousand for the three months ended March 31, 2020 and 2019 , respectively. The following table provides information regarding the core deposit intangibles at March 31, 2020 and December 31, 2019 : As of March 31, 2020 As of December 31, 2019 Core Deposit Intangibles Related To: Amortization Period Gross Amount Accumulated Amortization Carrying Amount Accumulated Carrying Amount (Dollars in thousands) Center Financial acquisition 7 years $ 4,100 $ (4,100 ) $ — $ (4,100 ) $ — Pacific International Bank acquisition 7 years 604 (602 ) 2 (602 ) 2 Foster Bankshares acquisition 10 years 2,763 (2,171 ) 592 (2,120 ) 643 Wilshire Bancorp acquisition 10 years 18,138 (7,430 ) 10,708 (6,950 ) 11,188 Total $ 25,605 $ (14,303 ) $ 11,302 $ (13,772 ) $ 11,833 Servicing assets are recognized when SBA and residential mortgage loans are sold with the servicing retained by the Company and the related income is recorded as a component of gains on sales of 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. The Company’s servicing costs approximates the industry average servicing costs of 40 basis points. All classes of servicing assets are subsequently measured using the amortization method which requires servicing rights to be amortized into noninterest income in proportion to, and over the period of, the estimated future net servicing income of the underlying loans. Management periodically evaluates servicing assets for impairment based upon the fair value of the rights as compared to the carrying amount. Impairment is determined by stratifying rights into groupings based on loan type. Impairment is recognized through a valuation allowance for an individual grouping, to the extent that fair value is less than the carrying amount. As of March 31, 2020 and December 31, 2019 , the Company did not have a valuation allowance on it servicing assets. The changes in servicing assets for the three months ended March 31, 2020 and 2019 were as follows: Three Months Ended March 31, 2020 2019 (Dollars in thousands) Balance at beginning of period $ 16,417 $ 23,132 Additions through originations of servicing assets 377 327 Amortization (1,947 ) (2,052 ) Balance at end of period $ 14,847 $ 21,407 Loans serviced for others are not reported as assets. The principal balances of loans serviced for other institutions were $1.35 billion as of March 31, 2020 and $1.35 billion as of December 31, 2019 . The Company utilizes the discounted cash flow method to calculate the initial excess servicing assets. The inputs used in evaluating servicing assets for impairment at March 31, 2020 and December 31, 2019 are presented below. March 31, 2020 December 31, 2019 SBA Servicing Assets: Weighted-average discount rate 10.41% 9.19% Constant prepayment rate 14.17% 14.17% Mortgage Servicing Assets: Weighted-average discount rate 9.00% 9.25% Constant prepayment rate 9.46% 9.57%

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2020
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes For the three months ended March 31, 2020 , the Company had an income tax provision totaling $6.5 million on pretax income of $32.4 million , representing an effective tax rate of 19.94% , compared with an income tax provision of $14.4 million on pretax income of $57.2 million , representing an effective tax rate of 25.24% for the three months ended March 31, 2019 . The reduction in the effective tax rate for the three months ended March 31, 2020 compared to the three months ended March 31, 2019 was primarily due to affordable housing partnership investment tax credits benefits. The Company reduced its projected annual pre-tax book income for 2020 taking into consideration the recent COVID-19 pandemic which increased the tax effect of the Company’s affordable housing partnership investment tax credits, reducing the overall tax rate for the first quarter of 2020. 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 $141 thousand at March 31, 2020 and $141 thousand at December 31, 2019 , that relate to uncertainties associated with federal and state income tax matters. The Company recognizes interest and penalties on income tax matters in income tax expense. The Company recorded approximately $37 thousand and $34 thousand , for accrued interest ( no portion was related to penalties) at March 31, 2020 and December 31, 2019 , respectively. Management believes it is reasonably possible that the unrecognized tax benefits may decrease by $141 thousand in the next twelve months due to a settlement with the state tax authorities. 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 2015. 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 New York State Department of Taxation and Finance for the 2016, 2017, and 2018 tax years and the New York City Department of Finance for the 2016 and 2017 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 (without regard to certain changes to deferred taxes). Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases and operating loss and tax credit carry forwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. Deferred tax assets are reduced by a valuation allowance when, in the opinion of management, it is more likely than not that some portion, or all, of the deferred tax asset will not be realized. In assessing the realization of deferred tax assets, management evaluates both positive and negative evidence, including the existence of any cumulative losses in the current year and the prior two years, the amount of taxes paid in available carry-back years, the forecasts of future income, applicable tax planning strategies, and assessments of current and future economic and business conditions. This analysis is updated quarterly and adjusted as necessary. Based on the analysis, the Company has determined that a valuation allowance for deferred tax assets was not required as of March 31, 2020 .

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2020
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements Fair value is defined as the exchange price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date reflecting assumptions that a market participant would use when pricing an asset or liability. 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 was derived from the security’s underlying collateral, which included discount rate, 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 could result in a significant increase or decrease in the fair value measurement. Equity Investments With Readily Determinable Fair Value The fair value of the Company’s equity investments with readily determinable fair value is comprised of mutual funds. The fair value for these investments is obtained from unadjusted quoted prices in active markets on the date of measurement and is therefore classified as Level 1. 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. 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. Collateral Dependent Loans The fair values of collateral dependent loans are generally measured for ACL using the practical expedients permitted by ASC 326-20-35-5 including collateral dependent 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% . Appraisals may utilize a single valuation approach or a combination of approaches including comparable sales and income approach. Adjustment may be made in the appraisal process by the independent appraiser to adjust for differences between the comparable sales and income data available for similar loans and the underlying collateral. For commercial and industrial and asset backed loans, independent valuations may include 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 up to 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. Assets and liabilities measured at fair value on a recurring basis are summarized below: Fair Value Measurements at the End of March 31, 2020 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs Significant Unobservable Inputs (Dollars in thousands) Assets: Securities available for sale: U.S. Government agency and U.S. Government sponsored enterprises: Collateralized mortgage obligations $ 701,547 $ — $ 701,547 $ — Mortgage-backed securities: Residential 385,396 — 385,396 — Commercial 543,331 — 543,331 — Corporate securities 4,344 — 4,344 — Municipal securities 84,084 — 83,005 1,079 Equity investments with readily determinable fair value 22,478 22,478 — — Interest rate swaps 37,890 — 37,890 — Mortgage banking derivatives 922 — 922 — Liabilities: Interest rate swaps 37,890 — 37,890 — Mortgage banking derivatives 282 — 282 — Fair Value Measurements at the End of the Reporting Period Using December 31, 2019 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: Collateralized mortgage obligations $ 736,655 $ — $ 736,655 $ — Mortgage-backed securities: Residential 352,897 — 352,897 — Commercial 552,124 — 552,124 — Corporate securities 4,200 — 4,200 — Municipal securities 70,111 — 69,035 1,076 Equity investments with readily determinable fair value 22,123 22,123 — — Interest rate swaps 10,353 — 10,353 — Mortgage banking derivatives 95 — 95 — Liabilities: Interest rate swaps 10,353 — 10,353 — Mortgage banking derivatives 16 — 16 — There were no transfers between Level 1, 2, and 3 during the three months ended March 31, 2020 and 2019 . The table below presents a reconciliation and income statement classification of gains (losses) for all assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the three months ended March 31, 2020 and 2019 : Three Months Ended March 31, 2020 2019 (Dollars in thousands) Beginning Balance $ 1,076 $ 1,059 Change in fair value included in other comprehensive income (loss) 3 9 Ending Balance $ 1,079 $ 1,068 The Company measures certain assets at fair value on a non-recurring basis including collateral dependent loans (excludes PCI loans at December 31, 2019), loans held for sale, and OREO. These fair value adjustments result from individually evaluated ACL 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 March 31, 2020 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs Significant Unobservable Inputs (Dollars in thousands) Assets: Collateral dependent loans at fair value: Real estate loans $ 13,381 $ — $ — $ 13,381 Commercial business 9,101 — — 9,101 OREO 18,725 — — 18,725 Fair Value Measurements at the End of the Reporting Period Using December 31, 2019 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: Collateral dependent loans at fair value: Real estate loans $ 9,519 $ — $ — $ 9,519 Commercial business 8,942 — — 8,942 OREO 19,086 — — 19,086 For assets measured at fair value on a non-recurring basis, the total net gains (losses), which include charge offs, recoveries, recorded ACL, valuations, and recognized gains and losses on sales are summarized below: For the Three Months Ended March 31, 2020 2019 (Dollars in thousands) Assets: Collateral dependent loans at fair value: Real estate loans $ (4,659 ) $ 1,048 Commercial business (4,656 ) (3,231 ) Consumer (608 ) (285 ) OREO (826 ) 62 Fair Value of Financial Instruments Carrying amounts and estimated fair values of financial instruments, not previously presented, at March 31, 2020 and December 31, 2019 were as follows: March 31, 2020 Carrying Amount Estimated Fair Value Fair Value Measurement (Dollars in thousands) Financial Assets: Cash and cash equivalents $ 802,033 $ 802,033 Level 1 Interest bearing deposits in other financial institutions 29,162 29,250 Level 2 Equity investments without readily determinable fair values 27,091 27,091 Level 2 Loans held for sale 8,281 8,489 Level 2 Loans receivable—net 12,438,493 12,373,370 Level 3 Accrued interest receivable 30,450 30,450 Level 2/3 Servicing assets, net 14,847 16,780 Level 3 Customers’ liabilities on acceptances 1,951 1,951 Level 2 Financial Liabilities: Noninterest bearing deposits $ 3,010,143 $ 3,010,143 Level 2 Saving and other interest bearing demand deposits 5,123,577 5,123,577 Level 2 Time deposits 4,702,847 4,729,396 Level 2 FHLB advances 675,000 692,331 Level 2 Convertible notes, net 200,716 178,933 Level 1 Subordinated debentures 103,318 105,822 Level 2 Accrued interest payable 30,436 30,436 Level 2 Acceptances outstanding 1,951 1,951 Level 2 December 31, 2019 Carrying Amount Estimated Fair Value Fair Value Measurement Using (Dollars in thousands) Financial Assets: Cash and cash equivalents $ 698,567 $ 698,567 Level 1 Interest bearing deposits in other financial institutions 29,162 29,235 Level 2 Equity investments without readily determinable fair values 26,967 26,967 Level 2 Loans held for sale 54,271 56,011 Level 2 Loans receivable—net 12,181,863 12,143,727 Level 3 Accrued interest receivable 30,772 30,772 Level 2/3 Servicing assets, net 16,417 18,966 Level 3 Customers’ liabilities on acceptances 1,117 1,117 Level 2 Financial Liabilities: Noninterest bearing deposits $ 3,108,687 $ 3,108,687 Level 2 Saving and other interest bearing demand deposits 4,259,707 4,259,707 Level 2 Time deposits 5,158,970 5,182,405 Level 2 FHLB advances 625,000 628,903 Level 2 Convertible debt 199,458 206,210 Level 1 Subordinated debentures 103,035 114,690 Level 2 Accrued interest payable 33,810 33,810 Level 2 Acceptances outstanding 1,117 1,117 Level 2 The Company measures assets and liabilities for its fair value disclosures based on an exit price notion. Although the exit price notion represents the value that would be received to sell an asset or paid to transfer a liability, the actual price received for a sale of assets or paid to transfer liabilities could be different from exit price disclosed. 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, equity investments without readily determinable fair values, 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 loans the fair value is determined through a discounted cash flow analysis which incorporates probability of default and loss given default rates on an individual loan basis. The discount rate is based on the LIBOR Swap Rate for fixed rate loans, while variable loans start with the corresponding index rate and an adjustment was made on certain loans which considered factors such as servicing costs, capital charges, duration, asset type incremental costs, and use of projected cash flows. Residential real estate loans fair values included Fannie Mae and Freddie Mac prepayment speed assumptions or a third party index based on historical prepayment speeds. Fair value of time deposits is based discounted cash flow analysis using recent issuance rates over the prior three months and a market rate analysis of recent offering rates for retail products. Wholesale time deposits fair values incorporated brokered time deposit offering rates. The fair value of the Company’s debt is based on current rates for similar financing. Fair value for the Company’s convertible notes is based on the actual last traded price of the notes. The fair value of commitments to fund loans represents fees currently charged to enter into similar agreements with similar remaining maturities and is not presented herein. The fair value of these financial instruments is not material to the consolidated financial statements.

Stockholders' Equity

Stockholders' Equity	3 Months Ended
	Mar. 31, 2020
Equity [Abstract]
Stockholders’ Equity	Stockholders’ Equity Total stockholders’ equity at March 31, 2020 was $2.02 billion , compared to $2.04 billion at December 31, 2019 . As of December 31, 2019, the Company had repurchased 9,945,547 shares of its common stock totaling $163.8 million as part of the repurchase programs that were authorized by the Company’s Board of Directors. During the three months ended March 31, 2020 , the Company completed the $50.0 million repurchase plan though the repurchase of 2,716,034 shares of common stock totaling $36.2 million completing. For the three months ended March 31, 2020 and 2019 , the Company paid dividends of $0.14 per common share. The following table presents the quarterly changes to accumulated other comprehensive income (loss) for the three months ended March 31, 2020 and 2019 : Three Months Ended, March 31, 2020 March 31, 2019 (Dollars in thousands) Balance at beginning of period $ 9,149 $ (32,705 ) Unrealized gain on securities available for sale 38,853 24,666 Reclassification adjustments for net gains realize in net income — — Tax effect (11,553 ) (7,319 ) Total other comprehensive income $ 27,300 $ 17,347 Balance at end of period $ 36,449 $ (15,358 ) For the three months ended and March 31, 2020 and 2019 , there were no other reclassifications out of accumulated other comprehensive income (loss).

Stock-Based Compensation

Stock-Based Compensation	3 Months Ended
	Mar. 31, 2020
Share-based Payment Arrangement [Abstract]
Stock-Based Compensation	Stock-Based Compensation On May 23, 2019, the Company’s stockholders approved the 2019 stock-based incentive plan (the “2019 Plan”) which provides for grants of stock options, SARs, restricted stock, performance shares, and performance units to non-employee directors, employees, and potentially 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 2019 Plan replaces the 2016 Plan and stipulates that no further awards shall be made under prior plans. Therefore, future awards will only be issued from the 2019 Plan. The 2019 Plan provides 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 participants with those of the Company’s stockholders. The 2019 Plan initially had 4,400,000 shares that were 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 the Code. Similarly, under the terms of the plans, 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 participants 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). 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. Under the 2019 Plan, 3,611,849 shares were available for future grants as of March 31, 2020 . 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 the Company’s stock option activity for the three months ended March 31, 2020 : Number of Shares Weighted-Average Exercise Price Per Share Weighted-Average Aggregate Intrinsic Value (Dollars in thousands) Outstanding - January 1, 2020 935,211 $ 15.34 Granted — — Exercised — — Expired (14,461 ) 16.70 Forfeited — — Outstanding - March 31, 2020 920,750 $ 15.32 5.24 $ 350 Options exercisable - March 31, 2020 847,211 $ 15.12 5.12 $ 350 The following is a summary of the Company’s restricted stock and performance unit activity for the three months ended March 31, 2020 : Number of Shares Weighted-Average Grant Date Fair Value Outstanding (unvested) - January 1, 2020 1,035,744 $ 14.08 Granted 416,585 11.66 Vested (201,722 ) 14.53 Forfeited (37,032 ) 12.81 Outstanding (unvested) - March 31, 2020 1,213,575 $ 13.21 The total fair value of restricted stock and performance units vested for the three months ended March 31, 2020 and 2019 was $2.0 million and $347 thousand , respectively. In 2017, the Company adopted the Hope Employee Stock Purchase Plan (“ESPP”) which 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 of the Company’s common stock on behalf of the participating employees at a 10% discount to 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 months ended March 31, 2020 and 2019 was $ 71 thousand and $ 75 thousand , respectively. The total amount charged against income related to stock-based payment arrangements, including ESPP, was $2.0 million and $ 815 thousand for the three months ended March 31, 2020 and 2019 , respectively. The income tax benefit recognized was approximately $397 thousand and $206 thousand for the three months ended March 31, 2020 and 2019 , respectively. At March 31, 2020 , the unrecognized compensation expense related to non-vested stock option grants was $202 thousand and is expected to be recognized over a weighted average vesting period of 1.42 years. Unrecognized compensation expense related to non-vested restricted stock and performance units was $11.3 million and is expected to be recognized over a weighted average vesting period of 1.83 years.

Regulatory Matters

Regulatory Matters	3 Months Ended
	Mar. 31, 2020
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 result in 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 the Dodd-Frank Act and to implement the Basel III international agreements reached by the Basel Committee. The final rules became effective for the Company and the Bank on January 1, 2015 and were 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 was established for “Common Equity Tier 1” as a subset of Tier 1 capital limited to common equity; • A minimum non-risk-based leverage ratio was 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 was added and must be met to avoid limitations on the ability of the B ank to pay dividends, repurchase shares, or pay discretionary bonuses. As of March 31, 2020 , the capital conservation buffer for the Company stood at 2.50%, and the capital ratios for the Company and the Bank were sufficient to meet the fully phased-in conservation buffer. With the adoption of the CECL standard on January 1, 2020, the Company recorded a Day 1 adjustment, net of taxes to retained earnings totaling $18.8 million . In accordance with the revised regulatory CECL transition guidance, the Company has elected to defer the impact of the adoption of CECL for two years, at which time the impact will be phased-in over a three year period. As of March 31, 2020 and December 31, 2019 , 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 1 risk-based, common equity Tier 1, and Tier 1 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. The Company’s and the Bank’s levels and ratios are presented in the table below for the dates indicated: Actual Required For Capital Adequacy Purposes Minimum Capital Adequacy With Capital Conservation Buffer Required To Be Well Capitalized As of March 31, 2020 Amount Ratio Amount Ratio Amount Ratio Amount Ratio (Dollars in thousands) Common equity Tier 1 capital (to risk weighted assets): Company $ 1,527,666 11.44 % $ 600,667 4.50 % $ 943,371 7.00 % N/A N/A Bank $ 1,804,000 13.52 % $ 600,600 4.50 % $ 934,267 7.00 % $ 867,533 6.50 % Total capital (to risk-weighted assets): Company $ 1,746,523 13.08 % $ 1,067,853 8.00 % $ 1,401,557 10.50 % N/A N/A Bank $ 1,950,169 14.61 % $ 1,067,733 8.00 % $ 1,401,400 10.50 % $ 1,334,667 10.00 % Tier 1 capital Company $ 1,627,083 12.19 % $ 800,890 6.00 % $ 1,134,594 8.50 % N/A N/A Bank $ 1,804,000 13.52 % $ 800,800 6.00 % $ 934,267 8.50 % $ 1,067,733 8.00 % Tier 1 capital Company $ 1,627,083 10.88 % $ 598,392 4.00 % N/A N/A N/A N/A Bank $ 1,804,000 12.05 % $ 598,682 4.00 % N/A N/A $ 748,353 5.00 % Actual Required For Capital Adequacy Purposes Minimum Capital Adequacy Required To Be Well Capitalized As of December 31, 2019 Amount Ratio Amount Ratio Amount Ratio Amount Ratio (Dollars in thousands) Common equity Tier 1 capital (to risk weighted assets): Company $ 1,553,697 11.76 % $ 594,373 4.50 % $ 924,581 7.00 % N/A N/A Bank $ 1,811,862 13.72 % $ 594,320 4.50 % $ 924,498 7.00 % $ 858,462 6.50 % Total capital (to risk-weighted assets): Company $ 1,747,611 13.23 % $ 1,056,664 8.00 % $ 1,386,871 10.50 % N/A N/A Bank $ 1,906,642 14.44 % $ 1,056,569 8.00 % $ 1,386,747 10.50 % $ 1,320,711 10.00 % Tier 1 capital Company $ 1,652,831 12.51 % $ 792,498 6.00 % $ 1,122,705 8.50 % N/A N/A Bank $ 1,811,862 13.72 % $ 792,427 6.00 % $ 924,498 8.50 % $ 1,056,569 8.00 % Tier 1 capital Company $ 1,652,831 11.22 % $ 589,367 4.00 % N/A N/A N/A N/A Bank $ 1,811,862 12.29 % $ 589,604 4.00 % N/A N/A $ 737,005 5.00 %

Revenue Recognition

Revenue Recognition	3 Months Ended
	Mar. 31, 2020
Revenue from Contract with Customer [Abstract]
Revenue Recognition	Revenue Recognition With the adoption of ASU 2014-09 (Topic 606), the Company recognizes revenue when obligations under the terms of a contract with customers are satisfied. Topic 606 does not apply to revenue associated with financial instruments, including revenue from loans and securities. In addition, certain noninterest income streams such as fees associated with mortgage servicing rights, financial guarantees, derivatives, and certain credit card fees are also out of scope of the new guidance. Topic 606 is applicable to noninterest revenue streams such as deposit related fees, wire transfer fees, and certain OREO related net gains or expenses. However, the recognition of these revenue streams for the Company did not change significantly upon adoption of Topic 606. Noninterest revenue streams within the scope of Topic 606 are discussed below. Service Charges on Deposit Accounts and Wire Transfer Fees Service charges on noninterest and interest bearing deposit accounts consist of monthly service charges, customer analysis charges, non-sufficient funds (“NSF”) charges, and other deposit account related charges. The Company’s performance obligation for account analysis charges and monthly service charges is generally satisfied, and the related revenue is recognized over the period in which the service is provided. NSF charges, other deposit account related charges, and wire transfer fees are transaction based, and therefore the Company’s performance obligation is satisfied at the point of the transaction, and related revenue recognized at that point in time. Payment for service charges on deposit accounts is primarily received immediately or in the following month through a direct charge to customers’ accounts. Service charges on deposit accounts and wire transfers are summarized below: Three Months Ended March 31, 2020 2019 (Dollars in thousands) Noninterest bearing deposit account income: Monthly service charges $ 368 $ 423 Customer analysis charges 1,870 1,723 NSF charges 1,655 1,941 Other service charges 216 214 Total noninterest bearing deposit account income 4,109 4,301 Interest bearing deposit account income: Monthly service charges 24 16 Total service fees on deposit accounts $ 4,133 $ 4,317 Wire transfer fee income: Wire transfer fees $ 806 $ 934 Foreign exchange fees 192 155 Total wire transfer fees $ 998 $ 1,089 OREO Income (Expense) OREO are often sold in transactions that, under ASC 606, may not be considered a contract with a customer because the sale of the asset may not be an output of the Company’s ordinary activities. However, sales of nonfinancial assets, including in-substance nonfinancial assets, should be accounted for in accordance with ASC 610-20, “ Other Income - Gains and Losses from the Derecognition of Nonfinancial Assets” , which requires the Company to apply certain measurement and recognition concepts of ASC 606. Accordingly, the Company recognizes the sale of a real estate property, along with any associated gain or loss, when control of the property transfers to the buyer. For sales of existing real estate properties, this generally will occur at the point of sale. When the Company finances the sale of OREO to the buyer, the Company must assess whether the buyer is committed to perform their obligations under the contract and whether collectability of the transaction price is probable. Once these criteria are met, the OREO asset is derecognized and the gain or loss on sale is recorded upon the transfer of control of the property to the buyer. Application of the new revenue recognition standard does not materially change the amount and the timing of the gain/loss on sale of OREO and other nonfinancial assets. Further, there were no open OREO/nonfinancial assets sale contracts at the adoption date that required an evaluation under Topic 606. The Company recognized a net loss on sale of OREO in the amount of $61 thousand for the three months ended March 31, 2020 . For the three months ended March 31, 2019 , the Company recognized a gain on sale of OREO in the amount of $3 thousand

Subsequent Events

Subsequent Events	3 Months Ended
	Mar. 31, 2020
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events A provision in the Coronavirus Aid, Relief, and Economic Security (“CARES”) Act created the Paycheck Protection Program (“PPP”), which is administered by the Small Business Administration (“SBA”). The PPP is intended to provide loans to small businesses to pay their employees, rent, mortgage interest and utilities. The loans may be forgiven conditioned upon the borrower providing payroll documentation evidencing their compliant use of funds and otherwise complying with the terms of the program. The Bank is an approved SBA lender and began accepting applications for the program in April 2020. As of May 6, 2020, the Company had processed approximately $500 million in PPP loans. As a result of the COVID-19 pandemic, a loan modification program was designed and implemented to assist the Bank’s borrowers experiencing financial stress resulting from the economic impacts caused by the global pandemic. The Company is offering modifications to borrowers impacted by the pandemic who were not delinquent over 30 days on payments as of December 31, 2019. For commercial borrowers, the Company is providing short-term modifications including interest only payments and payment deferrals. Borrowers with residential mortgage loans are being provided temporary forbearance plans initially for 90 days during which period credit reporting will be suspended and late charges will be waived. The Company’s credit card customers upon request are being provided a deferral of minimum payments for up to two payment cycles without penalty. During the first quarter of 2020, only a minimal number of loans were modified under the Company’s COVID-19 related modification program. However, the Company has subsequently received a significant number of modification requests and has increased processing for COVID-19 related modifications. As of May 6, 2020, the Company had processed modifications under the Company’s COVID-19 related modification program for borrowers across various loan types and industries, including those areas directly affected by the pandemic such as the CRE hospitality and retail sectors, whose aggregate loan balance represents approximately $1.41 billion . Recent revised interagency guidance from the Federal Reserve and the Federal Deposit Insurance Corporation confirmed with the FASB that modifications made on a good faith basis in response to COVID-19 to borrowers who were current prior to any relief, do not require TDR classification. The Company believes its loan modification program satisfies the applicable requirements.

Basis of Presentation Basis of

Basis of Presentation Basis of Presentation (Policies)	3 Months Ended
	Mar. 31, 2020
Basis Of Presentation [Abstract]
Consolidation	The consolidated financial statements include the accounts of Hope Bancorp and its wholly owned subsidiaries, principally Bank of Hope. All intercompany transactions and balances have been eliminated in consolidation. The Company has made all adjustments, that in the opinion of management, are necessary to fairly present the Company’s financial position at March 31, 2020 and December 31, 2019 and the results of operations for the three months ended March 31, 2020 and 2019 . 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.
Adopted and Pending Accounting Pronouncements	Adopted Accounting Pronouncements In June 2016, the Financial Accounting Standards Board (“FASB”) issued ASU 2016-13, “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments”, also referred to as “CECL”. The FASB subsequently issued ASU 2018-19, ASU 2019-04, ASU 2019-05, ASU 2019-10, ASU 2019-11 and ASU 2020-02 to provide additional clarification, implementation, codification improvements, transition guidance, and adoption guidance related to ASU 2016-13. ASU 2016-13 requires the measurement of all expected credit losses for financial assets carried at amortized cost held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. On January 1, 2020, the Company adopted CECL using the modified retrospective approach. The adoption of the standard resulted in changes to the Company’s loan and allowance policies. Refer to Note 1 to the Consolidated Financial Statements in the Company’s 2019 Annual Report on Form 10-K regarding additional significant accounting policies, including accounting policies in effect prior to the adoption of CECL. Upon adoption of CECL accounting standard on January 1, 2020, the Company recognized a day 1 increase of its Allowance for Credit Losses (“ACL”) of $26.2 million . The Company adopted CECL without electing the fair value option on eligible financial instruments. Internal controls related to the CECL ACL calculation were finalized prior to adoption. The increase in the ACL was largely driven by longer duration CRE loans due to the capture of lifetime expected credit losses under CECL. On January 1, 2020, the Company also recorded a cumulative-effect adjustment, net of taxes, totaling $18.8 million to decrease retained earnings. In accordance with the revised regulatory CECL transition guidance, the Company has elected to defer the regulatory capital impact of the adoption of CECL for two years, at which time the impact will be phased-in over a three year period. The Company did not record an ACL on its available for sale securities upon adoption of CECL or as of March 31, 2020. The Company adopted CECL using the prospective transition approach for purchased credit deteriorated (“PCD”) assets which were previously classified as purchased credit impaired (“PCI”) and accounted for under ASC 310-30. In accordance with CECL standard, the Company did not reassess whether PCI assets met the definition of PCD assets as of the date of the adoption of CECL. On January 1, 2020, the amortized cost basis of the PCD assets of $95.0 million were adjusted to reflect the ACL for loans. The remaining noncredit discount of $29.2 million at March 31, 2020, based on the adjusted amortized cost basis will be accreted into interest income at the effective interest rate over the life of the PCD loans. Under the CECL ACL methodology, losses are estimated for life of loans split out into three different periods. The initial period uses a forecast of two years for its portfolio segments using economic scenarios from an independent third party to estimate losses. Subsequent to the forecast period, a one year reversion period is used which connects the forecast period to last period of historical loss estimates. In January 2017, the FASB issued ASU 2017-04, “Intangibles: Goodwill and Other: Simplifying the Test for Goodwill Impairment”. ASU 2017-04 will amend and simplify current goodwill impairment testing to eliminate Step 2 from the current provisions. Under the new guidance, an entity performs the goodwill impairment test by comparing the fair value of a reporting unit with its carrying value and recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value. An entity still has the option to perform the quantitative assessment for a reporting unit to determine if a quantitative impairment test is necessary. ASU 2017-04 has been adopted for interim and annual goodwill impairment tests in fiscal years beginning January 1, 2020. The Company performed a qualitative assessment during the interim period ended March 31, 2020, and determined that goodwill was no t impaired as of that date. The adoption of ASU 2017-04 did not have a material impact on the Company’s consolidated financial statements. In August 2018, the FASB issued ASU 2018-13, “Fair Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement”. ASU 2018-13 modifies the disclosure requirements for fair value measurements by removing, modifying, or adding certain disclosures. ASU 2018-13 removes the disclosure requirement detailing the amount of and reasons for transfers between Level 1 and Level 2, and the valuation processes for Level 3 fair value measurements. In addition, ASU 2018-13 modifies the disclosure requirements for investments in certain entities that calculate net asset value. Lastly, ASU 2018-13 adds a disclosure requirement for changes in unrealized gains and losses for the period included in other comprehensive income for recurring Level 3 fair value measurements held at the end of the reporting period and the range and weighted average of significant unobservable inputs used to develop Level 3 measurements. ASU 2018-13 is effective annual periods in fiscal years beginning January 1, 2020, including interim periods within those annual periods. Early adoption is permitted upon the issuance of ASU 2018-13. The removed and modified disclosures will be adopted on a retrospective basis, and the new disclosures will be adopted on a prospective basis. The adoption of ASU 2018-13 did not have a material impact on the Company’s consolidated financial statements. In August 2018, the FASB issued ASU 2018-15, “ Intangibles - Goodwill and Other - Internal Use Software (Subtopic 250-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract (a consensus of the FASB Emerging Issues Task Force)”. ASU 2018-15 requires an entity in a cloud computing arrangement (i.e., hosting arrangement) that is a service contract to follow the internal-use software guidance in ASC 350-40 to determine which implementation costs to capitalize as assets or expense as incurred. Capitalized implementation costs should be presented in the same line item on the balance sheet as amounts prepaid for the hosted service, if any (generally as an “other asset”). The capitalized costs will be amortized over the term of the hosting arrangement, with the amortization expense being presented in the same income statement line item as the fees paid for the hosted service. The Company adopted ASU 2018-15 on January 1, 2020. The adoption of ASU 2018-15 did not have a material impact on the Company’s consolidated financial statements. Pending Accounting Pronouncements In March 2020, the FASB issued ASU 2020-04, Reference Rate Reform: Facilitation of the Effects of Reference Rate Reform on Financial Reporting. The amendments provide temporary, optional guidance to ease the potential burden in accounting for reference rate reform. The amendments provide optional expedients and exceptions for applying GAAP to transactions affected by reference rate reform if certain criteria are met. The amendments primarily include relief related to contract modifications and hedging relationships, as well as providing a one-time election for the sale or transfer of debt securities classified as held-to-maturity. This guidance is effective immediately and the amendments may be applied prospectively through December 31, 2022. The Company is currently in the process of evaluating ASU 2020-04 and determining the impact to the Company’s consolidated financial statements.
Financing Receivables	On January 1, 2020 the Company adopted ASU 2016-13, “Measurement of Credit Losses on Financial Instruments”, or CECL which significantly changed the credit losses estimation model for loans and investments. The discussion below relates to the Company’s CECL allowance for credit losses (“ACL”) methodology. For a discussion of the Company’s former incurred loss allowance for loan losses methodology, please refer to the Company’s Annual Report on Form 10-K for the year ended December 31, 2019. The Company calculates its ACL by estimating expected credit losses on a collective basis for loans that share similar risk characteristics. Loans that do not share similar risk characteristics with other loans are evaluated on an individual basis. The Company uses a combination of a modeled and non-modeled approach that incorporates current and future economic conditions to estimate lifetime expected losses on a collective basis. The Company uses Probability of Default (“PD”), Loss Given Default (“LGD”) and Exposure at Default (“EAD”) methodologies with quantitative factors and qualitative considerations in calculation of the allowance for credit losses for collectively assessed loans. The Company uses a reasonable and supportable period of 2 years at which point loss assumptions revert back to historical loss information by means of 1 year reversion period. The ACL for the Company’s construction, credit card, and certain consumer loans is calculated based on a non-modeled approach utilizing historical loss rate approach to estimate losses. A non-modeled approach was chosen for these loans as fewer data points exist which could result in high levels of estimated loss volatility under a modeled approach. In aggregate non-modeled loans represented less than 3% of the Company’s total loan portfolio as of March 31, 2020. With the adoption of CECL, the Company formed an Economic Forecast Committee (“EFC”) to review economic forecast scenarios that are incorporated in the Company’s ACL. The EFC reviews multiple scenarios provided to the Company by an independent third party and chooses a single scenario that best aligns with management’s expectation of future economic conditions. The forecast scenario contains certain macroeconomic variables that are incorporated into the Company’s modeling process, including GDP, unemployment rates, interest rates, and housing prices. As of March 31, 2020, the Company chose a forecast scenario that incorporates the effect of the recent COVID-19 pandemic into estimates of future economic conditions. The scenario assumes a large decline in GDP and an increase in unemployment for the second quarter of 2020 followed by a return to GDP growth by the end of 2020, while unemployment remains slightly elevated through 2023. Subsequent to the completion of the ACL calculation as of March 31, 2020, the Company received updated macroeconomic forecast scenarios in April 2020, which reflects more projected deterioration in GDP and unemployment compared to the scenario incorporated into the Company’s ACL as of March 31, 2020. The updated April 2020 forecast scenario information was not reflected in the Company’s ACL as of March 31, 2020. If those forecasts remain unchanged or decline further, the Company would expect additional increases in ACL and additional provision for credit losses expense. Additionally, in order to systematically quantify the credit risk impact of other trends and changes within the loan portfolio, the Company utilizes qualitative adjustments to the modeled and non-modeled estimated loss approaches. The parameters for making adjustments are established under a Credit Risk Matrix that provides different possible scenarios for each of the factors below. The Credit Risk Matrix and the possible scenarios enable the Bank to qualitatively adjust the Loss Migration Ratio by as much as 25 basis points for each loan type pool. This matrix considers the following seven factors, which are patterned after the guidelines provided under the Federal Financial Institutions Examination Council (“FFIEC”) Interagency Policy Statement on the Allowance for Loan and Lease Losses, updated to reflect the adoption of CECL: • Changes in lending policies and procedures, including underwriting standards and collection, charge off, and recovery practices; • 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; • 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, legal requirements, and regulatory requirements on the level of estimated losses in the loan portfolio. For loans which do not share the similar risk characteristics such as nonaccrual and TDR loans above $500 thousand, the Company evaluates these loans on an individual basis in accordance with ASC 326. These nonaccrual and TDR loans are considered to have a different risk profiles than performing loans and therefore are evaluated separately from performing loan pools. The Company decided to collectively assess the TDRs and nonaccrual loans with balances below $500 thousand along with the performing and accrual loans in order to reduce the operational burden of individually assessing small TDR and nonaccrual loans with immaterial balances. For these individually assessed loans, the ACL is measured using 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 loans, management obtains a new appraisal to determine the fair value of collateral. 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 amortized balance the loan, the Company recognizes an ACL with a corresponding charge to the provision for credit losses. The Company maintains a separate ACL for its off-balance sheet unfunded loan commitments. The Company uses a funding rate to allocate the allowance to undrawn exposures. This funding rate is used as a credit conversion factor to capture how much undrawn can potentially become drawn at any point. Funding rate is determined based on a lookback period of 8 quarters. Credit loss is not estimated for off-balance sheet credit exposures that are unconditionally cancellable by the Company.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2020
Earnings Per Share [Abstract]
Computation of basic and diluted EPS	The following tables show the computation of basic and diluted EPS for the three months ended March 31, 2020 and 2019 . Three Months Ended March 31, 2020 2019 Net Income (Numerator) Weighted-Average Shares (Denominator) Earnings Per Share Net Income (Numerator) Weighted-Average Shares Earnings (Dollars in thousands, except share and per share data) Basic EPS - common stock $ 25,953 124,295,327 $ 0.21 $ 42,758 126,640,464 $ 0.34 Effect of dilutive securities: Stock options, restricted stock, and ESPP shares 380,969 179,208 Diluted EPS - common stock $ 25,953 124,676,296 $ 0.21 $ 42,758 126,819,672 $ 0.34

Equity Investments (Tables)

Equity Investments (Tables)	3 Months Ended
	Mar. 31, 2020
Investments, Debt and Equity Securities [Abstract]
Schedule Of Change In Fair Value For Equity Investment Securities	The changes in fair value for equity investments with readily determinable fair values for the three ended March 31, 2020 and 2019 were recorded in other noninterest income and fees as summarized in the table below: Three Months Ended March 31, 2020 2019 (Dollars in thousands) Net change in fair value recorded during the period on equity investments with readily determinable fair value $ 354 $ 912 Net change in fair value recorded on equity investments sold during the period — — Net change in fair value on equity investments with readily determinable fair values $ 354 $ 912

Securities Available for Sale (

Securities Available for Sale (Tables)	3 Months Ended
	Mar. 31, 2020
Debt Securities, Available-for-sale [Abstract]
Summary of Securities Available for Sale	The following is a summary of securities available for sale as of the dates indicated: At March 31, 2020 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Allowance For Investment Credit Losses Fair Value (Dollars in thousands) Debt securities: U.S. Government agency and U.S. Government sponsored enterprises: Collateralized mortgage obligations $ 679,805 $ 21,773 $ (31 ) $ — $ 701,547 Mortgage-backed securities: Residential 375,183 10,213 — — 385,396 Commercial 524,969 18,921 (559 ) — 543,331 Corporate securities 5,000 — (656 ) — 4,344 Municipal securities 82,746 1,577 (239 ) — 84,084 Total investment securities available for sale $ 1,667,703 $ 52,484 $ (1,485 ) $ — $ 1,718,702 At December 31, 2019 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Allowance For (Dollars in thousands) Debt securities: U.S. Government agency and U.S. Government sponsored enterprises: Collateralized mortgage obligations $ 735,094 $ 4,220 $ (2,659 ) N/A $ 736,655 Mortgage-backed securities: Residential 353,073 1,422 (1,598 ) N/A 352,897 Commercial 541,043 13,441 (2,360 ) N/A 552,124 Corporate securities 5,000 — (800 ) N/A 4,200 Municipal securities 69,631 831 (351 ) N/A 70,111 Total investment securities available for sale $ 1,703,841 $ 19,914 $ (7,768 ) N/A $ 1,715,987
Investments Classified by Contractual Maturity Date	The amortized cost and estimated fair value of investment securities at March 31, 2020 , by contractual maturity, is presented in the table 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. Collateralized mortgage obligations and mortgage-backed securities are not due at a single maturity date and their total balances are shown separately. Amortized Cost Estimated Fair Value (Dollars in thousands) Available for sale: Due within one year $ 80 $ 80 Due after one year through five years 349 351 Due after five years through ten years — — Due after ten years 87,317 87,997 U.S. Government agency and U.S. Government sponsored enterprises: Collateralized mortgage obligations 679,805 701,547 Mortgage-backed securities: Residential 375,183 385,396 Commercial 524,969 543,331 Total $ 1,667,703 $ 1,718,702
Schedule of Unrealized Loss on Investments	The following tables show the Company’s investments’ gross unrealized losses and estimated fair values, aggregated by investment category and the length of time that the individual securities have been in a continuous unrealized loss position as of the dates indicated. As of March 31, 2020 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) Collateralized mortgage obligations* 3 $ 16,760 $ (31 ) — $ — $ — 3 $ 16,760 $ (31 ) Mortgage-backed securities: Residential* — — — — — — — — — Commercial* 8 99,878 (559 ) — — — 8 99,878 (559 ) Corporate securities — — — 1 4,344 (656 ) 1 4,344 (656 ) Municipal securities 1 3,588 (15 ) 3 14,462 (224 ) 4 18,050 (239 ) Total 12 $ 120,226 $ (605 ) 4 $ 18,806 $ (880 ) 16 $ 139,032 $ (1,485 ) __________________________________ * Investments in U.S. Government agency and U.S. Government sponsored enterprises As of December 31, 2019 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* 20 $ 108,236 $ (721 ) 32 $ 183,050 $ (1,938 ) 52 $ 291,286 $ (2,659 ) Mortgage-backed securities: Residential* 6 84,107 (267 ) 16 129,457 (1,331 ) 22 213,564 (1,598 ) Commercial* 7 68,452 (1,037 ) 5 73,697 (1,323 ) 12 142,149 (2,360 ) Corporate securities — — — 1 4,200 (800 ) 1 4,200 (800 ) Municipal securities 2 8,942 (39 ) 3 15,437 (312 ) 5 24,379 (351 ) Total 35 $ 269,737 $ (2,064 ) 57 $ 405,841 $ (5,704 ) 92 $ 675,578 $ (7,768 ) __________________________________ * Investments in U.S. Government agency and U.S. Government sponsored enterprises

Loans Receivable and Allowanc_2

Loans Receivable and Allowance for Credit Losses (Tables)	3 Months Ended
	Mar. 31, 2020
Receivables [Abstract]
Summary of Loans Receivable by Major Category	The following is a summary of loans receivable by major category: March 31, 2020 December 31, 2019 Loan portfolio composition (Dollars in thousands) Real estate loans: Residential $ 56,727 $ 52,558 Commercial 8,342,643 8,316,470 Construction 281,852 295,523 Total real estate loans 8,681,222 8,664,551 Commercial business 3,067,132 2,721,183 Residential mortgage 786,833 835,188 Consumer and other 48,229 55,085 Loans receivable 12,583,416 12,276,007 Allowance for credit losses (144,923 ) (94,144 ) Loans receivable, net of allowance for credit losses $ 12,438,493 $ 12,181,863
Allowance for Credit Losses by Portfolio Segment	The following table presents breakdown of loans by recorded ACL broken out by loans evaluated individually and collectively at March 31, 2020 and December 31, 2019 : As of March 31, 2020 Real Estate – Residential Real Estate – Commercial Real Estate – Construction Commercial Business Residential Mortgage Consumer and Other Total (Dollars in thousands) Individually evaluated loans $ — $ 77,543 $ 10,165 $ 27,763 $ 2,574 $ 654 $ 118,699 ACL on individually evaluated loans $ — $ 842 $ — $ 4,568 $ 37 $ 81 $ 5,528 Individually evaluated loans ACL coverage N/A 1.09 % N/A 16.45 % 1.44 % 12.39 % 4.66 % Collectively evaluated loans $ 56,727 $ 8,265,100 $ 271,687 $ 3,039,369 $ 784,259 $ 47,575 $ 12,464,717 ACL on collectively evaluated loans $ 399 $ 91,718 $ 1,686 $ 38,315 $ 5,742 $ 1,535 $ 139,395 Collectively evaluated loans ACL coverage 0.70 % 1.11 % 0.62 % 1.26 % 0.73 % 3.23 % 1.12 % Total loans $ 56,727 $ 8,342,643 $ 281,852 $ 3,067,132 $ 786,833 $ 48,229 $ 12,583,416 Total ACL $ 399 $ 92,560 $ 1,686 $ 42,883 $ 5,779 $ 1,616 $ 144,923 Total ACL to total loans 0.70 % 1.11 % 0.60 % 1.40 % 0.73 % 3.35 % 1.15 % As of December 31, 2019 Real Estate – Residential Real Estate – Commercial Real Estate – Construction Commercial Business Residential Mortgage Consumer and Other Total (Dollars in thousands) Impaired loans (recorded investment) $ — $ 54,433 $ 10,165 $ 22,842 $ 2,753 $ 301 $ 90,494 Specific allowance $ — $ 312 $ — $ 3,073 $ 10 $ 7 $ 3,402 Specific allowance to impaired loans N/A 0.57 % N/A 13.45 % 0.36 % 2.33 % 3.76 % Other loans $ 52,437 $ 8,261,949 $ 285,981 $ 2,696,368 $ 831,417 $ 54,619 $ 12,182,771 General allowance $ 204 $ 51,400 $ 1,677 $ 29,959 $ 5,915 $ 1,587 $ 90,742 General allowance to other loans 0.39 % 0.62 % 0.59 % 1.11 % 0.71 % 2.91 % 0.74 % Total loans $ 52,437 $ 8,316,382 $ 296,146 $ 2,719,210 $ 834,170 $ 54,920 $ 12,273,265 Total allowance for loan losses $ 204 $ 51,712 $ 1,677 $ 33,032 $ 5,925 $ 1,594 $ 94,144 Total allowance to total loans 0.39 % 0.62 % 0.57 % 1.21 % 0.71 % 2.90 % 0.77 % The tables below detail the activity in the allowance for credit losses by portfolio segment for the three months ended March 31, 2020 and 2019 . Accrued interest receivable on loans totaled $26.1 million at March 31, 2020 and is excluded from the estimate of credit losses. During the three months ended March 31, 2020 , the Company charged off $4.7 million in PCD loans as a result of the adoption of CECL. Three Months Ended March 31, 2020 Real Estate Commercial Business Residential Mortgage Consumer and Other Total (Dollars in thousands) Balance, beginning of period $ 53,593 $ 33,032 $ 5,925 $ 1,594 $ 94,144 CECL day 1 adoption 27,791 (1,022 ) (543 ) (26 ) 26,200 Provision for credit losses 15,491 11,549 397 563 28,000 Loans charged off (2,397 ) (3,035 ) — (525 ) (5,957 ) Recoveries of charge offs 167 2,359 — 10 2,536 Balance, end of period $ 94,645 $ 42,883 $ 5,779 $ 1,616 $ 144,923 Three Months Ended March 31, 2019 Real Estate Commercial Business Residential Mortgage Consumer and Other Total (Dollars in thousands) Balance, beginning of period $ 56,767 $ 28,484 $ 5,207 $ 2,099 $ 92,557 Provision (credit) for loan losses (4,697 ) 6,718 886 93 3,000 Loans charged off (60 ) (1,408 ) (76 ) (210 ) (1,754 ) Recoveries of charge offs 1,127 158 — 7 1,292 PCI allowance adjustment — (878 ) — — (878 ) Balance, end of period $ 53,137 $ 33,074 $ 6,017 $ 1,989 $ 94,217 The following tables break out the allowance for credit losses and loan balance by measurement methodology at March 31, 2020 and December 31, 2019 : March 31, 2020 Real Estate Commercial Business Residential Mortgage Consumer and Other Total (Dollars in thousands) Allowance for credit losses: Individually evaluated $ 842 $ 4,568 $ 37 $ 81 $ 5,528 Collectively evaluated 93,803 38,315 5,742 1,535 139,395 Total $ 94,645 $ 42,883 $ 5,779 $ 1,616 $ 144,923 Loans outstanding: Individually evaluated $ 87,708 $ 27,763 $ 2,574 $ 654 $ 118,699 Collectively evaluated 8,593,514 3,039,369 784,259 47,575 12,464,717 Total $ 8,681,222 $ 3,067,132 $ 786,833 $ 48,229 $ 12,583,416 December 31, 2019 Real Estate Commercial Business Residential Mortgage Consumer and Other Total (Dollars in thousands) Allowance for loan losses: Individually evaluated for impairment $ 312 $ 3,073 $ 10 $ 7 $ 3,402 Collectively evaluated for impairment 48,616 26,914 5,913 1,220 82,663 PCI loans 4,665 3,045 2 367 8,079 Total $ 53,593 $ 33,032 $ 5,925 $ 1,594 $ 94,144 Loans outstanding: Individually evaluated for impairment $ 64,598 $ 22,842 $ 2,753 $ 301 $ 90,494 Collectively evaluated for impairment 8,502,603 2,689,468 831,259 53,872 12,077,202 PCI loans 97,764 6,900 158 747 105,569 Total $ 8,664,965 $ 2,719,210 $ 834,170 $ 54,920 $ 12,273,265
Schedule of Nonaccrual Loans and Loans Past Due 90 or More Days And Still on Accrual Status	The tables below represents the recorded investment of nonaccrual loans and loans past due 90 or more days and still on accrual status by class of loans and broken out by loans with an ACL and those without a recorded ACL as of March 31, 2020 and total nonaccrual loans and loans past due 90 or more days and still on accrual status by class of loans as of December 31, 2019 . Nonaccrual loans at March 31, 2020 includes $14.7 million in PCD loans (formerly PCI loans) that were previously excluded from nonaccrual status prior to the adoption of CECL. March 31, 2020 Nonaccrual with No ACL Nonaccrual with an ACL Total Nonaccrual (1) Accruing Loans Past Due 90 or More Days (Dollars in thousands) Real estate – residential $ — $ — $ — $ — Real estate – commercial Retail 5,269 1,927 7,196 — Hotel & motel 14,510 810 15,320 — Gas station & car wash 353 607 960 — Mixed use 1,043 893 1,936 — Industrial & warehouse 9,540 3,930 13,470 — Other 6,382 1,358 7,740 — Real estate – construction 10,165 — 10,165 — Commercial business 2,295 10,452 12,747 — Residential mortgage 1 2,573 2,574 — Consumer and other — 531 531 387 Total $ 49,558 $ 23,081 $ 72,639 $ 387 December 31, 2019 Nonaccrual Loans (1)(2) Accruing Loans Past Due 90 or More Days (Dollars in thousands) Real estate – residential $ — $ — Real estate – commercial Retail 2,934 449 Hotel & motel 10,901 — Gas station & car wash 271 — Mixed use 665 634 Industrial & warehouse 10,544 — Other 5,455 919 Real estate – construction 10,165 3,850 Commercial business 10,893 1,096 Residential mortgage 2,753 — Consumer and other 204 599 Total $ 54,785 $ 7,547 __________________________________ (1) Total nonaccrual loans exclude guaranteed portion of delinquent SBA loans that are in liquidation totaling $37.3 million and $29.2 million , at March 31, 2020 and December 31, 2019 , respectively. (2) Nonaccrual loans exclude PCI loans of $13.2 million at December 31, 2019.
Amortized Cost Basis of Collateral-Dependent Loans	The following table presents the amortized cost basis of collateral-dependent loans as of March 31, 2020: March 31, 2020 Real Estate Collateral Other Collateral Total (Dollars in thousands) Real Estate - Residential $ — $ — $ — Real Estate - Commercial 59,080 — 59,080 Real Estate - Construction 10,165 — 10,165 Commercial Business 5,971 4,861 10,832 Residential Mortgage 1,440 — 1,440 Consumer and Other — — — Total $ 76,656 $ 4,861 $ 81,517
Aging of Past Due Loans	The following tables present the recorded investment of past due loans, including nonaccrual loans past due 30 or more days, by the number of days past due as of March 31, 2020 and December 31, 2019 by class of loans: As of March 31, 2020 As of December 31, 2019 30-59 Days Past Due 60-89 Days Past Due 90 or More Days Past Due Total Past Due 30-59 Days 60-89 Days 90 or More Days Past Due Total (1) (Dollars in thousands) Real estate – residential $ — $ — $ — $ — $ — $ — $ — $ — Real estate – commercial Retail 585 — 6,380 6,965 1,083 1,424 3,037 5,544 Hotel & motel 10,888 1,767 11,163 23,818 1,346 936 6,409 8,691 Gas station & car wash 1,015 795 416 2,226 997 2,038 196 3,231 Mixed use 1,463 91 1,179 2,733 593 — 801 1,394 Industrial & warehouse 3,988 1,796 6,728 12,512 94 45 3,946 4,085 Other 2,343 115 3,452 5,910 811 785 3,704 5,300 Real estate – construction 8,613 — 10,165 18,778 — — 14,015 14,015 Commercial business 4,620 653 7,481 12,754 401 352 5,717 6,470 Residential mortgage 11,181 619 1,925 13,725 9,676 792 2,038 12,506 Consumer and other 636 104 733 1,473 176 122 614 912 Total Past Due $ 45,332 $ 5,940 $ 49,622 $ 100,894 $ 15,177 $ 6,494 $ 40,477 $ 62,148 __________________________________ (1) Past due loans at December 31, 2019 exclude PCI loans totaling $15.0 million .
Financing Receivable Credit Quality Indicators	The following presents by loan class and credit quality indicator, the recorded investment in the Company’s loans and leases as of December 31, 2019. As of December 31, 2019 Pass/Not Rated Special Mention Substandard Doubtful Total (Dollars in thousands) Real estate – residential $ 51,977 $ — $ 460 $ — $ 52,437 Real estate – commercial Retail 2,206,855 32,920 48,761 — 2,288,536 Hotel & motel 1,630,045 1,395 32,158 — 1,663,598 Gas station & car wash 831,840 2,161 7,513 — 841,514 Mixed use 699,454 4,906 16,355 — 720,715 Industrial & warehouse 973,442 11,680 45,754 — 1,030,876 Other 1,698,267 25,416 47,460 — 1,771,143 Real estate – construction 253,766 24,641 17,739 — 296,146 Commercial business 2,641,936 38,167 39,094 13 2,719,210 Residential mortgage 831,139 — 3,031 — 834,170 Consumer and other 53,801 166 953 — 54,920 Total $ 11,872,522 $ 141,452 $ 259,278 $ 13 $ 12,273,265 The following presents by credit quality indicator, loan class, and year of origination, the amortized cost basis of the Company’s loans receivable as of as of March 31, 2020 . As of March 31, 2020 Term Loan by Origination Year Revolving Loans Total 2020 2019 2018 2017 2016 Prior (Dollars in thousands) Real Estate - Residential Pass/Not Rated $ 3,192 $ 16,669 $ 11,741 $ 4,815 $ 8,429 $ 5,805 $ 5,621 $ 56,272 Special mention — — — — — — — — Substandard — — 143 — — 312 — 455 Doubtful/Loss — — — — — — — — Subtotal $ 3,192 $ 16,669 $ 11,884 $ 4,815 $ 8,429 $ 6,117 $ 5,621 $ 56,727 Real Estate - Commercial Pass/Not Rated $ 425,593 $ 1,627,041 $ 1,678,190 $ 1,386,616 $ 935,192 $ 1,891,862 $ 101,870 $ 8,046,364 Special mention — 17,222 16,163 7,159 7,737 28,113 — 76,394 Substandard — 3,372 10,840 22,044 30,302 150,132 3,195 219,885 Doubtful/Loss — — — — — — — — Subtotal $ 425,593 $ 1,647,635 $ 1,705,193 $ 1,415,819 $ 973,231 $ 2,070,107 $ 105,065 $ 8,342,643 Real Estate - Construction Pass/Not Rated $ 9,276 $ 34,362 $ 99,616 $ 80,338 $ 10,294 $ 4,601 $ — $ 238,487 Special mention — — — 9,435 5,774 9,931 — 25,140 Substandard — — — 10,165 — 8,060 — 18,225 Doubtful/Loss — — — — — — — — Subtotal $ 9,276 $ 34,362 $ 99,616 $ 99,938 $ 16,068 $ 22,592 $ — $ 281,852 Commercial Business Pass/Not Rated $ 389,340 $ 801,118 $ 301,969 $ 169,835 $ 106,825 $ 75,423 $ 1,165,155 $ 3,009,665 Special mention — 2,649 5,188 43 297 6 12,412 20,595 Substandard 540 1,853 7,835 4,180 7,826 4,870 9,756 36,860 Doubtful/Loss — — — — — 12 — 12 Subtotal $ 389,880 $ 805,620 $ 314,992 $ 174,058 $ 114,948 $ 80,311 $ 1,187,323 $ 3,067,132 Residential Mortgage Pass/Not Rated $ 3,367 $ 143,296 $ 300,555 $ 214,927 $ 72,358 $ 49,601 $ — $ 784,104 Special mention — — — — — — — — Substandard — 123 225 — 1,719 662 — 2,729 Doubtful/Loss — — — — — — — — Subtotal $ 3,367 $ 143,419 $ 300,780 $ 214,927 $ 74,077 $ 50,263 $ — $ 786,833 Consumer and Other Pass/Not Rated $ 275 $ 2,004 $ 3,083 $ 3,621 $ 6,865 $ 3,470 $ 28,144 $ 47,462 Special mention — — — 144 — 6 — 150 Substandard — — 5 — 31 581 — 617 Doubtful/Loss — — — — — — — — Subtotal $ 275 $ 2,004 $ 3,088 $ 3,765 $ 6,896 $ 4,057 $ 28,144 $ 48,229 Total Loans Pass/Not Rated $ 831,043 $ 2,624,490 $ 2,395,154 $ 1,860,152 $ 1,139,963 $ 2,030,762 $ 1,300,790 $ 12,182,354 Special mention — 19,871 21,351 16,781 13,808 38,056 12,412 122,279 Substandard 540 5,348 19,048 36,389 39,878 164,617 12,951 278,771 Doubtful/Loss — — — — — 12 — 12 Total $ 831,583 $ 2,649,709 $ 2,435,553 $ 1,913,322 $ 1,193,649 $ 2,233,447 $ 1,326,153 $ 12,583,416
Loans Sold From Loans Held For Investment	The breakdown of loans by type that were reclassified from held for investment to held for sale for the three months ended March 31, 2020 and 2019 is presented in the following table: Three Months Ended March 31, 2020 2019 Transfer of loans held for investment to held for sale (Dollars in thousands) Real estate - commercial $ — $ — Residential mortgage 1,002 33,390 Total $ 1,002 $ 33,390
Troubled Debt Restructurings	The following tables present the recorded investment of loans classified as TDR during the three months ended March 31, 2020 and 2019 by class of loans: Three Months Ended March 31, 2020 Three Months Ended March 31, 2019 Number of Pre- Post- Number of Loans Pre- Modification Post- Modification (Dollars in thousands) Real estate – residential — $ — $ — — $ — $ — Real estate – commercial Retail — — — 1 101 101 Hotel & motel — — — 1 152 152 Gas station & car wash 1 54 54 — — — Mixed use — — — — — — Industrial & warehouse 1 261 261 — — — Other 1 788 788 1 140 140 Real estate – construction — — — — — — Commercial business 1 294 294 7 5,407 5,407 Residential mortgage — — — — — — Consumer and other 1 18 18 6 33 33 Total 5 $ 1,415 $ 1,415 16 $ 5,833 $ 5,833 A summary of the recorded investment of TDR loans on accrual and nonaccrual status by type of concession as of March 31, 2020 and December 31, 2019 is presented below: As of March 31, 2020 TDR Loans on Accrual Status TDR Loans on Nonaccrual Status Total TDRs Real Estate Commercial Business Residential Mortgage Other Real Estate Commercial Business Residential Mortgage Other (Dollars in thousands) Payment concession $ 6,134 $ 822 $ — $ 50 $ 8,460 $ 243 $ — $ — $ 15,709 Maturity / amortization concession 18,592 12,088 — 73 1,497 5,202 120 37,572 Rate concession 5,925 105 — — 453 1,443 — 7,926 Total $ 30,651 $ 13,015 $ — $ 123 $ 10,410 $ 6,888 $ — $ 120 $ 61,207 As of December 31, 2019 TDR Loans on Accrual Status TDR Loans on Nonaccrual Status Total TDRs Real Estate Commercial Business Residential Mortgage Other Real Estate Commercial Business Residential Mortgage Other (Dollars in thousands) Payment concession $ 4,708 $ 886 $ — $ 54 $ 4,306 $ 259 $ — $ — $ 10,213 Maturity / amortization concession 14,537 10,778 — 43 — 5,931 — 122 31,411 Rate concession 4,419 181 — 103 334 65 — — 5,102 Total $ 23,664 $ 11,845 $ — $ 200 $ 4,640 $ 6,255 $ — $ 122 $ 46,726
Summary of Troubled Debt Restructurings with Subsequent Payment Default	The following table presents loans modified as TDRs within the previous twelve months ended March 31, 2020 and 2019 that subsequently had payment defaults during the three months ended March 31, 2020 and 2019 : Three Months Ended March 31, 2020 Three Months Ended March 31, 2019 Number of Loans Balance Number of Loans Balance (Dollars in thousands) Real estate – commercial Retail — $ — 1 $ 48 Hotel & motel — — 1 73 Gas station & car wash — — — — Mixed Use — — — — Industrial & warehouse — — 1 236 Other 2 293 — — Real estate – construction — — — — Commercial business 2 292 7 5,311 Residential mortgage — — — — Consumer and other 3 10 1 5 Total 7 $ 595 11 $ 5,673

Leases (Tables)

Leases (Tables)	3 Months Ended
	Mar. 31, 2020
Leases [Abstract]
Summary of Net Lease Cost and Other Information	The table below summarizes other information related to the Company’s operating leases: At or for the Three Months Ended At or for the Three Months Ended (Dollars in thousands) Cash paid for amounts included in the measurement of lease liabilities: Operating cash outflows for operating leases $ 3,724 $ 3,663 Right-of-use assets obtained in exchange for lease liabilities, net 1,279 62,360 Weighted-average remaining lease term - operating leases 5.7 years 6.2 years Weighted-average discount rate - operating leases 3.07 % 3.20 % The table below summarizes the Company’s net lease cost: Three Months Ended Three Months Ended (Dollars in thousands) Operating lease cost $ 3,945 $ 4,123 Short term lease cost — 9 Variable lease cost 767 703 Sublease income (212 ) (157 ) Net lease cost $ 4,500 $ 4,678
Summary of Maturity of Remaining Lease Liabilities	The table below summarizes the maturity of remaining lease liabilities: March 31, 2020 (Dollars in thousands) 2020 $ 11,014 2021 14,127 2022 10,038 2023 7,905 2024 6,357 2025 and thereafter 15,042 Total lease payments 64,483 Less: imputed interest 5,656 Total lease obligations $ 58,827

Borrowings (Tables)

Borrowings (Tables)	3 Months Ended
	Mar. 31, 2020
Debt Disclosure [Abstract]
Contractual Maturities for FHLB-SF Borrowings	At March 31, 2020 , the contractual maturities for outstanding FHLB advances were as follows: March 31, 2020 Scheduled maturities in: (Dollars in thousands) 2020 $ 385,000 2021 145,000 2022 145,000 Total $ 675,000

Subordinated Debentures and C_2

Subordinated Debentures and Convertible Notes (Tables)	3 Months Ended
	Mar. 31, 2020
Subordinated Borrowings [Abstract]
Summary of Trust Preferred Securities and Debentures	The following table is a summary of trust preferred securities and Debentures at March 31, 2020 : 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 3.89% 06/15/2033 Nara Statutory Trust IV 12/22/2003 5,000 5,155 Variable 4.68% 01/07/2034 Nara Statutory Trust V 12/17/2003 10,000 10,310 Variable 3.79% 12/17/2033 Nara Statutory Trust VI 03/22/2007 8,000 8,248 Variable 2.39% 06/15/2037 Center Capital Trust I 12/30/2003 18,000 14,290 Variable 4.68% 01/07/2034 Wilshire Trust II 03/17/2005 20,000 15,799 Variable 2.63% 03/17/2035 Wilshire Trust III 09/15/2005 15,000 11,181 Variable 2.14% 09/15/2035 Wilshire Trust IV 07/10/2007 25,000 18,114 Variable 2.12% 09/15/2037 Saehan Capital Trust I 03/30/2007 20,000 15,066 Variable 2.99% 06/30/2037 Total $ 126,000 $ 103,318
Convertible Debt	The value of the convertible note at issuance and carrying value as of March 31, 2020 and December 31, 2019 is presented in the tables below: As of March 31, 2020 Amortization/ Capitalization Period Gross Accumulated Carrying Amount (Dollars in thousands) Convertible notes principal balance $ 217,500 $ — $ 217,500 Discount 5 years (21,880 ) 7,715 (14,165 ) Issuance costs to be capitalized 5 years (4,119 ) 1,500 (2,619 ) Carrying balance of convertible notes $ 191,501 $ 9,215 $ 200,716 As of December 31, 2019 Amortization/ Capitalization Period Gross Accumulated Carrying Amount (Dollars in thousands) Convertible notes principal balance $ 217,500 $ — $ 217,500 Discount 5 years (21,880 ) 6,659 (15,221 ) Issuance costs to be capitalized 5 years (4,119 ) 1,298 (2,821 ) Carrying balance of convertible notes $ 191,501 $ 7,957 $ 199,458

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Other Derivatives Not Designated as Hedging Instruments, Statements of Financial Performance and Financial Position, Location	At March 31, 2020 and December 31, 2019 , interest rate swaps related to the Company’s loan hedging program that were outstanding is presented in the following table: March 31, 2020 December 31, 2019 (Dollars in thousands) Interest rate swaps on loans with correspondent banks Notional amount $ — $ 137,890 Weighted average remaining term (years) — 7.2 Pay fixed rate (weighted average) — % 3.62 % Received variable rate (weighted average) — % 3.83 % Estimated fair value $ — $ 739 Interest rate swaps on loans with correspondent banks Notional amount $ 448,308 $ 282,326 Weighted average remaining term (years) 7.0 6.9 Pay fixed rate (weighted average) 3.35 % 4.48 % Received variable rate (weighted average) 4.03 % 3.98 % Estimated fair value $ (37,890 ) $ (9,614 ) Back to back interest rate swaps with loan customers Notional amount $ — $ 137,890 Weighted average remaining term (years) — 7.2 Received fixed rate (weighted average) — % 3.62 % Pay variable rate (weighted average) — % 3.83 % Estimated fair value $ — $ (739 ) Back to back interest rate swaps with loan customers Notional amount $ 448,308 $ 282,326 Weighted average remaining term (years) 7.0 6.9 Received fixed rate (weighted average) 4.03 % 4.48 % Pay variable rate (weighted average) 3.35 % 3.98 % Estimated fair value $ 37,890 $ 9,614
Schedule of Derivative Instruments	The following table reflects the notional amount and fair value of mortgage banking derivatives for the dates indicated: As of March 31, 2020 As of December 31, 2019 Notional Amount Fair Value Notional Amount Fair Value (Dollars in thousands) Assets: Interest rate lock commitments $ 46,818 $ 444 $ 10,540 $ 84 Forward sale contracts related to mortgage banking $ 39,840 $ 478 $ 4,532 $ 11 Liabilities: Interest rate lock commitments $ 18,367 $ (112 ) $ — $ — Forward sale contracts related to mortgage banking $ 25,345 $ (170 ) $ 6,008 $ (16 )

Commitments and contingencies (

Commitments and contingencies (Tables)	3 Months Ended
	Mar. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Commitments	Commitments at March 31, 2020 and December 31, 2019 are summarized as follows: March 31, 2020 December 31, 2019 (Dollars in thousands) Commitments to extend credit $ 1,645,443 $ 1,864,947 Standby letters of credit 126,448 113,720 Other letters of credit 28,924 37,627 Commitments to fund investments in affordable housing partnerships 20,688 28,480

Goodwill, Intangible Assets, _2

Goodwill, Intangible Assets, and Servicing Assets (Tables)	3 Months Ended
	Mar. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Finite-Lived Intangible Assets	The following table provides information regarding the core deposit intangibles at March 31, 2020 and December 31, 2019 : As of March 31, 2020 As of December 31, 2019 Core Deposit Intangibles Related To: Amortization Period Gross Amount Accumulated Amortization Carrying Amount Accumulated Carrying Amount (Dollars in thousands) Center Financial acquisition 7 years $ 4,100 $ (4,100 ) $ — $ (4,100 ) $ — Pacific International Bank acquisition 7 years 604 (602 ) 2 (602 ) 2 Foster Bankshares acquisition 10 years 2,763 (2,171 ) 592 (2,120 ) 643 Wilshire Bancorp acquisition 10 years 18,138 (7,430 ) 10,708 (6,950 ) 11,188 Total $ 25,605 $ (14,303 ) $ 11,302 $ (13,772 ) $ 11,833
Schedule of Servicing Assets	The changes in servicing assets for the three months ended March 31, 2020 and 2019 were as follows: Three Months Ended March 31, 2020 2019 (Dollars in thousands) Balance at beginning of period $ 16,417 $ 23,132 Additions through originations of servicing assets 377 327 Amortization (1,947 ) (2,052 ) Balance at end of period $ 14,847 $ 21,407
Summary of Fair Value Inputs	The inputs used in evaluating servicing assets for impairment at March 31, 2020 and December 31, 2019 are presented below. March 31, 2020 December 31, 2019 SBA Servicing Assets: Weighted-average discount rate 10.41% 9.19% Constant prepayment rate 14.17% 14.17% Mortgage Servicing Assets: Weighted-average discount rate 9.00% 9.25% Constant prepayment rate 9.46% 9.57%

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2020
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 March 31, 2020 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs Significant Unobservable Inputs (Dollars in thousands) Assets: Securities available for sale: U.S. Government agency and U.S. Government sponsored enterprises: Collateralized mortgage obligations $ 701,547 $ — $ 701,547 $ — Mortgage-backed securities: Residential 385,396 — 385,396 — Commercial 543,331 — 543,331 — Corporate securities 4,344 — 4,344 — Municipal securities 84,084 — 83,005 1,079 Equity investments with readily determinable fair value 22,478 22,478 — — Interest rate swaps 37,890 — 37,890 — Mortgage banking derivatives 922 — 922 — Liabilities: Interest rate swaps 37,890 — 37,890 — Mortgage banking derivatives 282 — 282 — Fair Value Measurements at the End of the Reporting Period Using December 31, 2019 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: Collateralized mortgage obligations $ 736,655 $ — $ 736,655 $ — Mortgage-backed securities: Residential 352,897 — 352,897 — Commercial 552,124 — 552,124 — Corporate securities 4,200 — 4,200 — Municipal securities 70,111 — 69,035 1,076 Equity investments with readily determinable fair value 22,123 22,123 — — Interest rate swaps 10,353 — 10,353 — Mortgage banking derivatives 95 — 95 — Liabilities: Interest rate swaps 10,353 — 10,353 — Mortgage banking derivatives 16 — 16 —
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation	The table below presents a reconciliation and income statement classification of gains (losses) for all assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the three months ended March 31, 2020 and 2019 : Three Months Ended March 31, 2020 2019 (Dollars in thousands) Beginning Balance $ 1,076 $ 1,059 Change in fair value included in other comprehensive income (loss) 3 9 Ending Balance $ 1,079 $ 1,068
Assets Measured at Fair Value on a Non-recurring Basis	Assets measured at fair value on a non-recurring basis are summarized below: Fair Value Measurements at the End of the Reporting Period Using March 31, 2020 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs Significant Unobservable Inputs (Dollars in thousands) Assets: Collateral dependent loans at fair value: Real estate loans $ 13,381 $ — $ — $ 13,381 Commercial business 9,101 — — 9,101 OREO 18,725 — — 18,725 Fair Value Measurements at the End of the Reporting Period Using December 31, 2019 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: Collateral dependent loans at fair value: Real estate loans $ 9,519 $ — $ — $ 9,519 Commercial business 8,942 — — 8,942 OREO 19,086 — — 19,086 For assets measured at fair value on a non-recurring basis, the total net gains (losses), which include charge offs, recoveries, recorded ACL, valuations, and recognized gains and losses on sales are summarized below: For the Three Months Ended March 31, 2020 2019 (Dollars in thousands) Assets: Collateral dependent loans at fair value: Real estate loans $ (4,659 ) $ 1,048 Commercial business (4,656 ) (3,231 ) Consumer (608 ) (285 ) OREO (826 ) 62
Carrying Amounts and Estimated Fair Values of Financial Instruments	Carrying amounts and estimated fair values of financial instruments, not previously presented, at March 31, 2020 and December 31, 2019 were as follows: March 31, 2020 Carrying Amount Estimated Fair Value Fair Value Measurement (Dollars in thousands) Financial Assets: Cash and cash equivalents $ 802,033 $ 802,033 Level 1 Interest bearing deposits in other financial institutions 29,162 29,250 Level 2 Equity investments without readily determinable fair values 27,091 27,091 Level 2 Loans held for sale 8,281 8,489 Level 2 Loans receivable—net 12,438,493 12,373,370 Level 3 Accrued interest receivable 30,450 30,450 Level 2/3 Servicing assets, net 14,847 16,780 Level 3 Customers’ liabilities on acceptances 1,951 1,951 Level 2 Financial Liabilities: Noninterest bearing deposits $ 3,010,143 $ 3,010,143 Level 2 Saving and other interest bearing demand deposits 5,123,577 5,123,577 Level 2 Time deposits 4,702,847 4,729,396 Level 2 FHLB advances 675,000 692,331 Level 2 Convertible notes, net 200,716 178,933 Level 1 Subordinated debentures 103,318 105,822 Level 2 Accrued interest payable 30,436 30,436 Level 2 Acceptances outstanding 1,951 1,951 Level 2 December 31, 2019 Carrying Amount Estimated Fair Value Fair Value Measurement Using (Dollars in thousands) Financial Assets: Cash and cash equivalents $ 698,567 $ 698,567 Level 1 Interest bearing deposits in other financial institutions 29,162 29,235 Level 2 Equity investments without readily determinable fair values 26,967 26,967 Level 2 Loans held for sale 54,271 56,011 Level 2 Loans receivable—net 12,181,863 12,143,727 Level 3 Accrued interest receivable 30,772 30,772 Level 2/3 Servicing assets, net 16,417 18,966 Level 3 Customers’ liabilities on acceptances 1,117 1,117 Level 2 Financial Liabilities: Noninterest bearing deposits $ 3,108,687 $ 3,108,687 Level 2 Saving and other interest bearing demand deposits 4,259,707 4,259,707 Level 2 Time deposits 5,158,970 5,182,405 Level 2 FHLB advances 625,000 628,903 Level 2 Convertible debt 199,458 206,210 Level 1 Subordinated debentures 103,035 114,690 Level 2 Accrued interest payable 33,810 33,810 Level 2 Acceptances outstanding 1,117 1,117 Level 2

Stockholders_ Equity (Tables)

Stockholders’ Equity (Tables)	3 Months Ended
	Mar. 31, 2020
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	The following table presents the quarterly changes to accumulated other comprehensive income (loss) for the three months ended March 31, 2020 and 2019 : Three Months Ended, March 31, 2020 March 31, 2019 (Dollars in thousands) Balance at beginning of period $ 9,149 $ (32,705 ) Unrealized gain on securities available for sale 38,853 24,666 Reclassification adjustments for net gains realize in net income — — Tax effect (11,553 ) (7,319 ) Total other comprehensive income $ 27,300 $ 17,347 Balance at end of period $ 36,449 $ (15,358 )

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2020
Share-based Payment Arrangement [Abstract]
Summary of Stock Option Activity Under the Plan	The following is a summary of the Company’s stock option activity for the three months ended March 31, 2020 : Number of Shares Weighted-Average Exercise Price Per Share Weighted-Average Aggregate Intrinsic Value (Dollars in thousands) Outstanding - January 1, 2020 935,211 $ 15.34 Granted — — Exercised — — Expired (14,461 ) 16.70 Forfeited — — Outstanding - March 31, 2020 920,750 $ 15.32 5.24 $ 350 Options exercisable - March 31, 2020 847,211 $ 15.12 5.12 $ 350
Summary of Restricted Stock and Performance Unit Activity Under the Plan	The following is a summary of the Company’s restricted stock and performance unit activity for the three months ended March 31, 2020 : Number of Shares Weighted-Average Grant Date Fair Value Outstanding (unvested) - January 1, 2020 1,035,744 $ 14.08 Granted 416,585 11.66 Vested (201,722 ) 14.53 Forfeited (37,032 ) 12.81 Outstanding (unvested) - March 31, 2020 1,213,575 $ 13.21

Regulatory Matters (Tables)

Regulatory Matters (Tables)	3 Months Ended
	Mar. 31, 2020
Banking and Thrift [Abstract]
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations	The Company’s and the Bank’s levels and ratios are presented in the table below for the dates indicated: Actual Required For Capital Adequacy Purposes Minimum Capital Adequacy With Capital Conservation Buffer Required To Be Well Capitalized As of March 31, 2020 Amount Ratio Amount Ratio Amount Ratio Amount Ratio (Dollars in thousands) Common equity Tier 1 capital (to risk weighted assets): Company $ 1,527,666 11.44 % $ 600,667 4.50 % $ 943,371 7.00 % N/A N/A Bank $ 1,804,000 13.52 % $ 600,600 4.50 % $ 934,267 7.00 % $ 867,533 6.50 % Total capital (to risk-weighted assets): Company $ 1,746,523 13.08 % $ 1,067,853 8.00 % $ 1,401,557 10.50 % N/A N/A Bank $ 1,950,169 14.61 % $ 1,067,733 8.00 % $ 1,401,400 10.50 % $ 1,334,667 10.00 % Tier 1 capital Company $ 1,627,083 12.19 % $ 800,890 6.00 % $ 1,134,594 8.50 % N/A N/A Bank $ 1,804,000 13.52 % $ 800,800 6.00 % $ 934,267 8.50 % $ 1,067,733 8.00 % Tier 1 capital Company $ 1,627,083 10.88 % $ 598,392 4.00 % N/A N/A N/A N/A Bank $ 1,804,000 12.05 % $ 598,682 4.00 % N/A N/A $ 748,353 5.00 % Actual Required For Capital Adequacy Purposes Minimum Capital Adequacy Required To Be Well Capitalized As of December 31, 2019 Amount Ratio Amount Ratio Amount Ratio Amount Ratio (Dollars in thousands) Common equity Tier 1 capital (to risk weighted assets): Company $ 1,553,697 11.76 % $ 594,373 4.50 % $ 924,581 7.00 % N/A N/A Bank $ 1,811,862 13.72 % $ 594,320 4.50 % $ 924,498 7.00 % $ 858,462 6.50 % Total capital (to risk-weighted assets): Company $ 1,747,611 13.23 % $ 1,056,664 8.00 % $ 1,386,871 10.50 % N/A N/A Bank $ 1,906,642 14.44 % $ 1,056,569 8.00 % $ 1,386,747 10.50 % $ 1,320,711 10.00 % Tier 1 capital Company $ 1,652,831 12.51 % $ 792,498 6.00 % $ 1,122,705 8.50 % N/A N/A Bank $ 1,811,862 13.72 % $ 792,427 6.00 % $ 924,498 8.50 % $ 1,056,569 8.00 % Tier 1 capital Company $ 1,652,831 11.22 % $ 589,367 4.00 % N/A N/A N/A N/A Bank $ 1,811,862 12.29 % $ 589,604 4.00 % N/A N/A $ 737,005 5.00 %

Revenue Recognition (Tables)

Revenue Recognition (Tables)	3 Months Ended
	Mar. 31, 2020
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	Service charges on deposit accounts and wire transfers are summarized below: Three Months Ended March 31, 2020 2019 (Dollars in thousands) Noninterest bearing deposit account income: Monthly service charges $ 368 $ 423 Customer analysis charges 1,870 1,723 NSF charges 1,655 1,941 Other service charges 216 214 Total noninterest bearing deposit account income 4,109 4,301 Interest bearing deposit account income: Monthly service charges 24 16 Total service fees on deposit accounts $ 4,133 $ 4,317 Wire transfer fee income: Wire transfer fees $ 806 $ 934 Foreign exchange fees 192 155 Total wire transfer fees $ 998 $ 1,089

Basis of Presentation (Details)

Basis of Presentation (Details) - USD ($)	Jan. 01, 2020	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Day 1 increase of ACL		$ 144,923,000	$ 94,144,000	$ 94,217,000	$ 92,557,000
Goodwill impairment		0
CECL adoption impact
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Day 1 increase of ACL	$ 26,200,000		$ 26,200,000
Cumulative-effect adjustment, net of taxes to decrease retained earnings	18,800,000
Amortized cost basis of PCD assets	$ 95,000,000
Remaining noncredit discount		$ 29,200,000

Earnings Per Share (Details)

Earnings Per Share (Details)	Jun. 07, 2018	Mar. 31, 2020USD ($)$ / sharesshares	Mar. 31, 2019USD ($)$ / sharesshares	Dec. 31, 2019USD ($)shares	Mar. 31, 2020USD ($)shares	Jun. 30, 2019USD ($)	Dec. 31, 2018USD ($)	Jun. 30, 2018USD ($)
Antidilutive Securities Excluded from Computation of Earnings Per Share
Share repurchase program, authorized amount | $		$ 50,000,000			$ 50,000,000	$ 50,000,000
Common stock repurchased and recorded as treasury stock (in shares) | shares		2,716,034		9,945,547	12,661,581
Repurchase of treasury stock | $		$ 36,180,000		$ 163,800,000	$ 200,000,000
Net Income (Numerator)
Basic EPS - common stock | $		25,953,000	$ 42,758,000
Diluted EPS - common stock | $		$ 25,953,000	$ 42,758,000
Weighted-Average Shares (Denominator)
Basic EPS - common stock (in shares) | shares		124,295,327	126,640,464
Effect of dilutive securities:
Stock options, restricted stock, and ESPP shares (in shares) | shares		380,969	179,208
Diluted EPS - common stock (shares) | shares		124,676,296	126,819,672
Earnings Per Share
Basic EPS - common stock (in dollars per share) | $ / shares		$ 0.21	$ 0.34
Diluted EPS - common stock (in dollars per share) | $ / shares		$ 0.21	$ 0.34
Convertible Notes
Antidilutive Securities Excluded from Computation of Earnings Per Share
Aggregate principal amount issued | $		$ 217,500,000			$ 217,500,000		$ 200,000,000	$ 217,500,000
Initial conversion rate	0.0450760	0.0450760
Stock options and restricted share awards
Antidilutive Securities Excluded from Computation of Earnings Per Share
Antidilutive shares of common stock | shares		660,995	969,871

Equity Investments - Narrative

Equity Investments - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2019
Net Investment Income [Line Items]
Equity investments with readily determinable fair value	$ 49,569,000			$ 49,090,000
Sale of equity stock in other institutions		$ 2,600,000
Change in fair value recorded on equity investments sold	354,000	$ 0	$ 912,000
Equity investments without readily determinable fair values	27,100,000			27,000,000
Equity investments without readily determinable fair values, impairment	0		0
Equity investments without readily determinable fair values, observable price changes	0		$ 0
Mutual funds
Net Investment Income [Line Items]
Equity investments with readily determinable fair value	22,500,000			22,100,000
Correspondent bank stock
Net Investment Income [Line Items]
Equity investments without readily determinable fair values	370,000			370,000
CDFI investments
Net Investment Income [Line Items]
Equity investments without readily determinable fair values	1,000,000			1,000,000
CRA investments
Net Investment Income [Line Items]
Equity investments without readily determinable fair values	$ 25,700,000			$ 25,600,000

Equity Investments - Change in

Equity Investments - Change in Fair Value of Equity Investments (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019
Investments, Debt and Equity Securities [Abstract]
Net change in fair value recorded during the period on equity investments with readily determinable fair value	$ 354,000		$ 912,000
Net change in fair value recorded on equity investments sold during the period	0		0
Net change in fair value on equity investments with readily determinable fair values	$ 354,000	$ 0	$ 912,000

Securities Available for Sale -

Securities Available for Sale - Summary of Securities Available for Sale (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 1,667,703,000		$ 1,703,841,000
Gross Unrealized Gains	52,484,000		19,914,000
Gross Unrealized Losses	(1,485,000)		(7,768,000)
Allowance For Investment Credit Losses	0
Fair Value	1,718,702,000		1,715,987,000
Net gains on sales and calls of securities available for sale	0	$ 0
Unrealized gains on securities	36,449,000		9,149,000
Available-for-sale Securities
Debt Securities, Available-for-sale [Line Items]
Unrealized gains on securities	36,400,000		9,100,000
Reclassifications out of accumulated other comprehensive income into earnings	0	$ 0
Collateralized mortgage obligations
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	679,805,000		735,094,000
Gross Unrealized Gains	21,773,000		4,220,000
Gross Unrealized Losses	(31,000)		(2,659,000)
Allowance For Investment Credit Losses	0
Fair Value	701,547,000		736,655,000
Residential
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	375,183,000		353,073,000
Gross Unrealized Gains	10,213,000		1,422,000
Gross Unrealized Losses	0		(1,598,000)
Allowance For Investment Credit Losses	0
Fair Value	385,396,000		352,897,000
Commercial
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	524,969,000		541,043,000
Gross Unrealized Gains	18,921,000		13,441,000
Gross Unrealized Losses	(559,000)		(2,360,000)
Allowance For Investment Credit Losses	0
Fair Value	543,331,000		552,124,000
Corporate securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	5,000,000		5,000,000
Gross Unrealized Gains	0		0
Gross Unrealized Losses	(656,000)		(800,000)
Allowance For Investment Credit Losses	0
Fair Value	4,344,000		4,200,000
Municipal securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	82,746,000		69,631,000
Gross Unrealized Gains	1,577,000		831,000
Gross Unrealized Losses	(239,000)		(351,000)
Allowance For Investment Credit Losses	0
Fair Value	$ 84,084,000		$ 70,111,000
Non-US Government and Agency Securities | Credit concentration risk | Stockholders' equity
Debt Securities, Available-for-sale [Line Items]
Maximum exposure to any single issuer	10.00%		10.00%

Securities Available for Sale_2

Securities Available for Sale - Amortized Cost and Estimated Fair Value (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Amortized Cost
Due within one year	$ 80
Due after one year through five years	349
Due after five years through ten years	0
Due after ten years	87,317
Amortized Cost	1,667,703	$ 1,703,841
Estimated Fair Value
Due within one year	80
Due after one year through five years	351
Due after five years through ten years	0
Due after ten years	87,997
Estimated Fair Value	1,718,702	1,715,987
Carrying value of securities pledged to secure public deposits, pledged for various borrowings and for other purposes required or permitted by law	356,800	340,900
Collateralized mortgage obligations
Amortized Cost
Amortized Cost	679,805	735,094
Estimated Fair Value
No single maturity date	701,547
Estimated Fair Value	701,547	736,655
Residential
Amortized Cost
Amortized Cost	375,183	353,073
Estimated Fair Value
No single maturity date	385,396
Estimated Fair Value	385,396	352,897
Commercial
Amortized Cost
Amortized Cost	524,969	541,043
Estimated Fair Value
No single maturity date	543,331
Estimated Fair Value	$ 543,331	$ 552,124

Securities Available for Sale_3

Securities Available for Sale - Aggregate Unrealized Losses and Fair Value (Details)	Mar. 31, 2020USD ($)security	Dec. 31, 2019USD ($)security
Number of Securities
Less than 12 months | security	12	35
12 months or longer | security	4	57
Total | security	16	92
Fair Value
Less than 12 months	$ 120,226,000	$ 269,737,000
12 months or longer	18,806,000	405,841,000
Total	139,032,000	675,578,000
Gross Unrealized Losses
Less than 12 months	(605,000)	(2,064,000)
12 months or longer	(880,000)	(5,704,000)
Total	(1,485,000)	(7,768,000)
Accrued interest receivable for investment securities available for sale	4,200,000	$ 4,300,000
Allowance for credit losses for available for sale securities	$ 0
Collateralized mortgage obligations
Number of Securities
Less than 12 months | security	3	20
12 months or longer | security	0	32
Total | security	3	52
Fair Value
Less than 12 months	$ 16,760,000	$ 108,236,000
12 months or longer	0	183,050,000
Total	16,760,000	291,286,000
Gross Unrealized Losses
Less than 12 months	(31,000)	(721,000)
12 months or longer	0	(1,938,000)
Total	$ (31,000)	$ (2,659,000)
Residential
Number of Securities
Less than 12 months | security	0	6
12 months or longer | security	0	16
Total | security	0	22
Fair Value
Less than 12 months	$ 0	$ 84,107,000
12 months or longer	0	129,457,000
Total	0	213,564,000
Gross Unrealized Losses
Less than 12 months	0	(267,000)
12 months or longer	0	(1,331,000)
Total	0	$ (1,598,000)
Allowance for credit losses for available for sale securities	$ 0
Commercial
Number of Securities
Less than 12 months | security	8	7
12 months or longer | security	0	5
Total | security	8	12
Fair Value
Less than 12 months	$ 99,878,000	$ 68,452,000
12 months or longer	0	73,697,000
Total	99,878,000	142,149,000
Gross Unrealized Losses
Less than 12 months	(559,000)	(1,037,000)
12 months or longer	0	(1,323,000)
Total	(559,000)	$ (2,360,000)
Allowance for credit losses for available for sale securities	$ 0
Corporate securities
Number of Securities
Less than 12 months | security	0	0
12 months or longer | security	1	1
Total | security	1	1
Fair Value
Less than 12 months	$ 0	$ 0
12 months or longer	4,344,000	4,200,000
Total	4,344,000	4,200,000
Gross Unrealized Losses
Less than 12 months	0	0
12 months or longer	(656,000)	(800,000)
Total	(656,000)	$ (800,000)
Allowance for credit losses for available for sale securities	$ 0
Municipal securities
Number of Securities
Less than 12 months | security	1	2
12 months or longer | security	3	3
Total | security	4	5
Fair Value
Less than 12 months	$ 3,588,000	$ 8,942,000
12 months or longer	14,462,000	15,437,000
Total	18,050,000	24,379,000
Gross Unrealized Losses
Less than 12 months	(15,000)	(39,000)
12 months or longer	(224,000)	(312,000)
Total	(239,000)	$ (351,000)
Allowance for credit losses for available for sale securities	$ 0
U.S. Government Agency and U.S. Government Sponsored Enterprises
Gross Unrealized Losses
Percentage of portfolio	95.00%

Loans Receivable and Allowanc_3

Loans Receivable and Allowance for Credit Losses - Schedule of Loans Receivable By Major Category (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020USD ($)segment	Dec. 31, 2019USD ($)	Mar. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 12,583,416	$ 12,276,007
Allowance for credit losses	(144,923)	(94,144)	$ (94,217)	$ (92,557)
Loans receivable, net of allowance for credit losses	12,438,493	12,181,863
Net deferred fees	$ 3,500	2,700
Number of portfolio segments | segment	4
Real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 8,681,222	8,664,551
Allowance for credit losses	(94,645)	(53,593)	(53,137)	(56,767)
Real estate loans | Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	56,727	52,558
Allowance for credit losses	(399)	(204)
Real estate loans | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	8,342,643	8,316,470
Allowance for credit losses	(92,560)	(51,712)
Real estate loans | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	281,852	295,523
Allowance for credit losses	(1,686)	(1,677)
Commercial business
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	3,067,132	2,721,183
Allowance for credit losses	(42,883)	(33,032)	(33,074)	(28,484)
Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	786,833	835,188
Allowance for credit losses	(5,779)	(5,925)	(6,017)	(5,207)
Consumer and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	48,229	55,085
Allowance for credit losses	$ (1,616)	$ (1,594)	$ (1,989)	$ (2,099)

Loans Receivable and Allowanc_4

Loans Receivable and Allowance for Credit Losses - Allowance for Credit Losses on Financing Receivables (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Jan. 01, 2020	Dec. 31, 2019
Allowance for Loan Losses and the Loans Receivables by Impairment Methodology
Accrued interest receivable on loans			$ 26,100,000
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period	$ 94,144,000	$ 92,557,000
Provision for credit losses	28,000,000	3,000,000
Loans charged off	(5,957,000)	(1,754,000)
Recoveries of charge offs	2,536,000	1,292,000
PCI allowance adjustment		(878,000)
Balance, end of period	144,923,000	94,217,000
Allowance for credit losses:
Individually evaluated			5,528,000		$ 3,402,000
Collectively evaluated			139,395,000		82,663,000
Total	94,144,000	94,217,000	144,923,000		94,144,000
Loans outstanding:
Individually evaluated			118,699,000		90,494,000
Collectively evaluated			12,464,717,000		12,077,202,000
Total			12,583,416,000		12,273,265,000
Reserve for unfunded loan commitments recorded in other liabilities			1,200,000		636,000
Additions to reserves for unfunded loan commitments recorded in credit related expenses	610,000	0
PCI/PCD loans
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period	8,079,000
Loans charged off	(4,700,000)
Allowance for credit losses:
Total	8,079,000				8,079,000
Loans outstanding:
Total					105,569,000
CECL day 1 adoption
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period	26,200,000
Allowance for credit losses:
Total	26,200,000			$ 26,200,000	26,200,000
Real estate
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period	53,593,000	56,767,000
Provision for credit losses	15,491,000	(4,697,000)
Loans charged off	(2,397,000)	(60,000)
Recoveries of charge offs	167,000	1,127,000
PCI allowance adjustment		0
Balance, end of period	94,645,000	53,137,000
Allowance for credit losses:
Individually evaluated			842,000		312,000
Collectively evaluated			93,803,000		48,616,000
Total	94,645,000	53,137,000	94,645,000		53,593,000
Loans outstanding:
Individually evaluated			87,708,000		64,598,000
Collectively evaluated			8,593,514,000		8,502,603,000
Total			8,681,222,000		8,664,965,000
Real estate | PCI/PCD loans
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period	4,665,000
Allowance for credit losses:
Total	4,665,000				4,665,000
Loans outstanding:
Total					97,764,000
Real estate | CECL day 1 adoption
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period	27,791,000
Allowance for credit losses:
Total	27,791,000				27,791,000
Commercial business
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period	33,032,000	28,484,000
Provision for credit losses	11,549,000	6,718,000
Loans charged off	(3,035,000)	(1,408,000)
Recoveries of charge offs	2,359,000	158,000
PCI allowance adjustment		(878,000)
Balance, end of period	42,883,000	33,074,000
Allowance for credit losses:
Individually evaluated			4,568,000		3,073,000
Collectively evaluated			38,315,000		26,914,000
Total	33,032,000	33,074,000	42,883,000		33,032,000
Loans outstanding:
Individually evaluated			27,763,000		22,842,000
Collectively evaluated			3,039,369,000		2,689,468,000
Total			3,067,132,000		2,719,210,000
Commercial business | PCI/PCD loans
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period	3,045,000
Allowance for credit losses:
Total	3,045,000				3,045,000
Loans outstanding:
Total					6,900,000
Commercial business | CECL day 1 adoption
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period	(1,022,000)
Allowance for credit losses:
Total	(1,022,000)				(1,022,000)
Residential mortgage
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period	5,925,000	5,207,000
Provision for credit losses	397,000	886,000
Loans charged off	0	(76,000)
Recoveries of charge offs	0	0
PCI allowance adjustment		0
Balance, end of period	5,779,000	6,017,000
Allowance for credit losses:
Individually evaluated			37,000		10,000
Collectively evaluated			5,742,000		5,913,000
Total	5,779,000	6,017,000	5,779,000		5,925,000
Loans outstanding:
Individually evaluated			2,574,000		2,753,000
Collectively evaluated			784,259,000		831,259,000
Total			786,833,000		834,170,000
Residential mortgage | PCI/PCD loans
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period	2,000
Allowance for credit losses:
Total	2,000				2,000
Loans outstanding:
Total					158,000
Residential mortgage | CECL day 1 adoption
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period	(543,000)
Allowance for credit losses:
Total	(543,000)				(543,000)
Consumer and other
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period	1,594,000	2,099,000
Provision for credit losses	563,000	93,000
Loans charged off	(525,000)	(210,000)
Recoveries of charge offs	10,000	7,000
PCI allowance adjustment		0
Balance, end of period	1,616,000	1,989,000
Allowance for credit losses:
Individually evaluated			81,000		7,000
Collectively evaluated			1,535,000		1,220,000
Total	1,594,000	$ 1,989,000	1,616,000		1,594,000
Loans outstanding:
Individually evaluated			654,000		301,000
Collectively evaluated			47,575,000		53,872,000
Total			$ 48,229,000		54,920,000
Consumer and other | PCI/PCD loans
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period	367,000
Allowance for credit losses:
Total	367,000				367,000
Loans outstanding:
Total					747,000
Consumer and other | CECL day 1 adoption
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period	(26,000)
Allowance for credit losses:
Total	$ (26,000)				$ (26,000)

Loans Receivable and Allowanc_5

Loans Receivable and Allowance for Credit Losses - Nonaccrual Loans and Loans Past Due 90 or More Days and Still on Accrual Status (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Financing Receivable, Nonaccrual [Line Items]
Threshold period for loans to be placed on nonaccrual status	90 days
Nonaccrual with No ACL	$ 49,558
Nonaccrual with an ACL	23,081
Total Nonaccrual	72,639	$ 54,785
Accruing Loans Past Due 90 or More Days	387	7,547
Guaranteed portion of delinquent SBA loans excluded from Nonaccrual loans	37,300	29,200
PCI/PCD loans
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual	14,700	13,200
Real estate | Residential
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No ACL	0
Nonaccrual with an ACL	0
Total Nonaccrual	0	0
Accruing Loans Past Due 90 or More Days	0	0
Real estate | Commercial | Retail
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No ACL	5,269
Nonaccrual with an ACL	1,927
Total Nonaccrual	7,196	2,934
Accruing Loans Past Due 90 or More Days	0	449
Real estate | Commercial | Hotel & motel
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No ACL	14,510
Nonaccrual with an ACL	810
Total Nonaccrual	15,320	10,901
Accruing Loans Past Due 90 or More Days	0	0
Real estate | Commercial | Gas station & car wash
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No ACL	353
Nonaccrual with an ACL	607
Total Nonaccrual	960	271
Accruing Loans Past Due 90 or More Days	0	0
Real estate | Commercial | Mixed use
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No ACL	1,043
Nonaccrual with an ACL	893
Total Nonaccrual	1,936	665
Accruing Loans Past Due 90 or More Days	0	634
Real estate | Commercial | Industrial & warehouse
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No ACL	9,540
Nonaccrual with an ACL	3,930
Total Nonaccrual	13,470	10,544
Accruing Loans Past Due 90 or More Days	0	0
Real estate | Commercial | Other
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No ACL	6,382
Nonaccrual with an ACL	1,358
Total Nonaccrual	7,740	5,455
Accruing Loans Past Due 90 or More Days	0	919
Real estate | Construction
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No ACL	10,165
Nonaccrual with an ACL	0
Total Nonaccrual	10,165	10,165
Accruing Loans Past Due 90 or More Days	0	3,850
Commercial business
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No ACL	2,295
Nonaccrual with an ACL	10,452
Total Nonaccrual	12,747	10,893
Accruing Loans Past Due 90 or More Days	0	1,096
Residential mortgage
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No ACL	1
Nonaccrual with an ACL	2,573
Total Nonaccrual	2,574	2,753
Accruing Loans Past Due 90 or More Days	0	0
Consumer and other
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No ACL	0
Nonaccrual with an ACL	531
Total Nonaccrual	531	204
Accruing Loans Past Due 90 or More Days	$ 387	$ 599

Loans Receivable and Allowanc_6

Loans Receivable and Allowance for Credit Losses - Collateral-Dependent Loans (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 12,583,416		$ 12,276,007
Reduction in interest income associated with loans on nonaccrual status	37	$ 769
Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	81,517
Real Estate Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	76,656
Other Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	4,861
Real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	8,681,222		8,664,551
Real estate | Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	56,727		52,558
Real estate | Residential | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0
Real estate | Residential | Real Estate Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0
Real estate | Residential | Other Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0
Real estate | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	8,342,643		8,316,470
Real estate | Commercial | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	59,080
Real estate | Commercial | Real Estate Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	59,080
Real estate | Commercial | Other Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0
Real estate | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	281,852		295,523
Real estate | Construction | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	10,165
Real estate | Construction | Real Estate Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	10,165
Real estate | Construction | Other Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0
Commercial business
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	3,067,132		2,721,183
Commercial business | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	10,832
Commercial business | Real Estate Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	5,971
Commercial business | Other Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	4,861
Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	786,833		835,188
Residential mortgage | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,440
Residential mortgage | Real Estate Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,440
Residential mortgage | Other Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0
Consumer and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	48,229		$ 55,085
Consumer and other | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0
Consumer and other | Real Estate Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0
Consumer and other | Other Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 0

Loans Receivable and Allowanc_7

Loans Receivable and Allowance for Credit Losses - Past Due Financing Receivables (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Financing Receivable, Past Due [Line Items]
Total Past Due	$ 100,894	$ 62,148
PCI/PCD loans
Financing Receivable, Past Due [Line Items]
Total Past Due		15,000
30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	45,332	15,177
60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	5,940	6,494
90 or More Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	49,622	40,477
Real estate | Residential
Financing Receivable, Past Due [Line Items]
Total Past Due	0	0
Real estate | Residential | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	0	0
Real estate | Residential | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	0	0
Real estate | Residential | 90 or More Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	0	0
Real estate | Commercial | Retail
Financing Receivable, Past Due [Line Items]
Total Past Due	6,965	5,544
Real estate | Commercial | Retail | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	585	1,083
Real estate | Commercial | Retail | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	0	1,424
Real estate | Commercial | Retail | 90 or More Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	6,380	3,037
Real estate | Commercial | Hotel & motel
Financing Receivable, Past Due [Line Items]
Total Past Due	23,818	8,691
Real estate | Commercial | Hotel & motel | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	10,888	1,346
Real estate | Commercial | Hotel & motel | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	1,767	936
Real estate | Commercial | Hotel & motel | 90 or More Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	11,163	6,409
Real estate | Commercial | Gas station & car wash
Financing Receivable, Past Due [Line Items]
Total Past Due	2,226	3,231
Real estate | Commercial | Gas station & car wash | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	1,015	997
Real estate | Commercial | Gas station & car wash | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	795	2,038
Real estate | Commercial | Gas station & car wash | 90 or More Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	416	196
Real estate | Commercial | Mixed use
Financing Receivable, Past Due [Line Items]
Total Past Due	2,733	1,394
Real estate | Commercial | Mixed use | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	1,463	593
Real estate | Commercial | Mixed use | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	91	0
Real estate | Commercial | Mixed use | 90 or More Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	1,179	801
Real estate | Commercial | Industrial & warehouse
Financing Receivable, Past Due [Line Items]
Total Past Due	12,512	4,085
Real estate | Commercial | Industrial & warehouse | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	3,988	94
Real estate | Commercial | Industrial & warehouse | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	1,796	45
Real estate | Commercial | Industrial & warehouse | 90 or More Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	6,728	3,946
Real estate | Commercial | Other
Financing Receivable, Past Due [Line Items]
Total Past Due	5,910	5,300
Real estate | Commercial | Other | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	2,343	811
Real estate | Commercial | Other | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	115	785
Real estate | Commercial | Other | 90 or More Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	3,452	3,704
Real estate | Construction
Financing Receivable, Past Due [Line Items]
Total Past Due	18,778	14,015
Real estate | Construction | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	8,613	0
Real estate | Construction | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	0	0
Real estate | Construction | 90 or More Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	10,165	14,015
Commercial business
Financing Receivable, Past Due [Line Items]
Total Past Due	12,754	6,470
Commercial business | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	4,620	401
Commercial business | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	653	352
Commercial business | 90 or More Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	7,481	5,717
Residential mortgage
Financing Receivable, Past Due [Line Items]
Total Past Due	13,725	12,506
Residential mortgage | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	11,181	9,676
Residential mortgage | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	619	792
Residential mortgage | 90 or More Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	1,925	2,038
Consumer and other
Financing Receivable, Past Due [Line Items]
Total Past Due	1,473	912
Consumer and other | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	636	176
Consumer and other | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	104	122
Consumer and other | 90 or More Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	$ 733	$ 614

Loans Receivable and Allowanc_8

Loans Receivable and Allowance for Credit Losses - Financing Receivable Credit Quality Indicators (Details) - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in 2020	$ 831,583,000
Term loan originated in 2019	2,649,709,000
Term loan originated in 2018	2,435,553,000
Term loan originated in 2017	1,913,322,000
Term loan originated in 2016	1,193,649,000
Term loan originated prior to 2016	2,233,447,000
Revolving Loans	1,326,153,000
Revolving loans converted to term loans	0
Total loans	12,583,416,000	$ 12,273,265,000
Pass/Not Rated
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in 2020	831,043,000
Term loan originated in 2019	2,624,490,000
Term loan originated in 2018	2,395,154,000
Term loan originated in 2017	1,860,152,000
Term loan originated in 2016	1,139,963,000
Term loan originated prior to 2016	2,030,762,000
Revolving Loans	1,300,790,000
Total loans	12,182,354,000	11,872,522,000
Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in 2020	0
Term loan originated in 2019	19,871,000
Term loan originated in 2018	21,351,000
Term loan originated in 2017	16,781,000
Term loan originated in 2016	13,808,000
Term loan originated prior to 2016	38,056,000
Revolving Loans	12,412,000
Total loans	122,279,000	141,452,000
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in 2020	540,000
Term loan originated in 2019	5,348,000
Term loan originated in 2018	19,048,000
Term loan originated in 2017	36,389,000
Term loan originated in 2016	39,878,000
Term loan originated prior to 2016	164,617,000
Revolving Loans	12,951,000
Total loans	278,771,000	259,278,000
Doubtful/Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in 2020	0
Term loan originated in 2019	0
Term loan originated in 2018	0
Term loan originated in 2017	0
Term loan originated in 2016	0
Term loan originated prior to 2016	12,000
Revolving Loans	0
Total loans	12,000	13,000
Real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	8,681,222,000	8,664,965,000
Real estate | Residential
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in 2020	3,192,000
Term loan originated in 2019	16,669,000
Term loan originated in 2018	11,884,000
Term loan originated in 2017	4,815,000
Term loan originated in 2016	8,429,000
Term loan originated prior to 2016	6,117,000
Revolving Loans	5,621,000
Total loans	56,727,000	52,437,000
Real estate | Residential | Pass/Not Rated
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in 2020	3,192,000
Term loan originated in 2019	16,669,000
Term loan originated in 2018	11,741,000
Term loan originated in 2017	4,815,000
Term loan originated in 2016	8,429,000
Term loan originated prior to 2016	5,805,000
Revolving Loans	5,621,000
Total loans	56,272,000	51,977,000
Real estate | Residential | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in 2020	0
Term loan originated in 2019	0
Term loan originated in 2018	0
Term loan originated in 2017	0
Term loan originated in 2016	0
Term loan originated prior to 2016	0
Revolving Loans	0
Total loans	0	0
Real estate | Residential | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in 2020	0
Term loan originated in 2019	0
Term loan originated in 2018	143,000
Term loan originated in 2017	0
Term loan originated in 2016	0
Term loan originated prior to 2016	312,000
Revolving Loans	0
Total loans	455,000	460,000
Real estate | Residential | Doubtful/Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in 2020	0
Term loan originated in 2019	0
Term loan originated in 2018	0
Term loan originated in 2017	0
Term loan originated in 2016	0
Term loan originated prior to 2016	0
Revolving Loans	0
Total loans	0	0
Real estate | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in 2020	425,593,000
Term loan originated in 2019	1,647,635,000
Term loan originated in 2018	1,705,193,000
Term loan originated in 2017	1,415,819,000
Term loan originated in 2016	973,231,000
Term loan originated prior to 2016	2,070,107,000
Revolving Loans	105,065,000
Total loans	8,342,643,000	8,316,382,000
Real estate | Commercial | Retail
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans		2,288,536,000
Real estate | Commercial | Hotel & motel
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans		1,663,598,000
Real estate | Commercial | Gas station & car wash
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans		841,514,000
Real estate | Commercial | Mixed use
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans		720,715,000
Real estate | Commercial | Industrial & warehouse
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans		1,030,876,000
Real estate | Commercial | Other
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans		1,771,143,000
Real estate | Commercial | Pass/Not Rated
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in 2020	425,593,000
Term loan originated in 2019	1,627,041,000
Term loan originated in 2018	1,678,190,000
Term loan originated in 2017	1,386,616,000
Term loan originated in 2016	935,192,000
Term loan originated prior to 2016	1,891,862,000
Revolving Loans	101,870,000
Total loans	8,046,364,000
Real estate | Commercial | Pass/Not Rated | Retail
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans		2,206,855,000
Real estate | Commercial | Pass/Not Rated | Hotel & motel
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans		1,630,045,000
Real estate | Commercial | Pass/Not Rated | Gas station & car wash
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans		831,840,000
Real estate | Commercial | Pass/Not Rated | Mixed use
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans		699,454,000
Real estate | Commercial | Pass/Not Rated | Industrial & warehouse
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans		973,442,000
Real estate | Commercial | Pass/Not Rated | Other
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans		1,698,267,000
Real estate | Commercial | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in 2020	0
Term loan originated in 2019	17,222,000
Term loan originated in 2018	16,163,000
Term loan originated in 2017	7,159,000
Term loan originated in 2016	7,737,000
Term loan originated prior to 2016	28,113,000
Revolving Loans	0
Total loans	76,394,000
Real estate | Commercial | Special mention | Retail
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans		32,920,000
Real estate | Commercial | Special mention | Hotel & motel
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans		1,395,000
Real estate | Commercial | Special mention | Gas station & car wash
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans		2,161,000
Real estate | Commercial | Special mention | Mixed use
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans		4,906,000
Real estate | Commercial | Special mention | Industrial & warehouse
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans		11,680,000
Real estate | Commercial | Special mention | Other
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans		25,416,000
Real estate | Commercial | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in 2020	0
Term loan originated in 2019	3,372,000
Term loan originated in 2018	10,840,000
Term loan originated in 2017	22,044,000
Term loan originated in 2016	30,302,000
Term loan originated prior to 2016	150,132,000
Revolving Loans	3,195,000
Total loans	219,885,000
Real estate | Commercial | Substandard | Retail
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans		48,761,000
Real estate | Commercial | Substandard | Hotel & motel
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans		32,158,000
Real estate | Commercial | Substandard | Gas station & car wash
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans		7,513,000
Real estate | Commercial | Substandard | Mixed use
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans		16,355,000
Real estate | Commercial | Substandard | Industrial & warehouse
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans		45,754,000
Real estate | Commercial | Substandard | Other
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans		47,460,000
Real estate | Commercial | Doubtful/Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in 2020	0
Term loan originated in 2019	0
Term loan originated in 2018	0
Term loan originated in 2017	0
Term loan originated in 2016	0
Term loan originated prior to 2016	0
Revolving Loans	0
Total loans	0
Real estate | Commercial | Doubtful/Loss | Retail
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans		0
Real estate | Commercial | Doubtful/Loss | Hotel & motel
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans		0
Real estate | Commercial | Doubtful/Loss | Gas station & car wash
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans		0
Real estate | Commercial | Doubtful/Loss | Mixed use
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans		0
Real estate | Commercial | Doubtful/Loss | Industrial & warehouse
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans		0
Real estate | Commercial | Doubtful/Loss | Other
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans		0
Real estate | Construction
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in 2020	9,276,000
Term loan originated in 2019	34,362,000
Term loan originated in 2018	99,616,000
Term loan originated in 2017	99,938,000
Term loan originated in 2016	16,068,000
Term loan originated prior to 2016	22,592,000
Revolving Loans	0
Total loans	281,852,000	296,146,000
Real estate | Construction | Pass/Not Rated
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in 2020	9,276,000
Term loan originated in 2019	34,362,000
Term loan originated in 2018	99,616,000
Term loan originated in 2017	80,338,000
Term loan originated in 2016	10,294,000
Term loan originated prior to 2016	4,601,000
Revolving Loans	0
Total loans	238,487,000	253,766,000
Real estate | Construction | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in 2020	0
Term loan originated in 2019	0
Term loan originated in 2018	0
Term loan originated in 2017	9,435,000
Term loan originated in 2016	5,774,000
Term loan originated prior to 2016	9,931,000
Revolving Loans	0
Total loans	25,140,000	24,641,000
Real estate | Construction | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in 2020	0
Term loan originated in 2019	0
Term loan originated in 2018	0
Term loan originated in 2017	10,165,000
Term loan originated in 2016	0
Term loan originated prior to 2016	8,060,000
Revolving Loans	0
Total loans	18,225,000	17,739,000
Real estate | Construction | Doubtful/Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in 2020	0
Term loan originated in 2019	0
Term loan originated in 2018	0
Term loan originated in 2017	0
Term loan originated in 2016	0
Term loan originated prior to 2016	0
Revolving Loans	0
Total loans	0	0
Commercial business
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in 2020	389,880,000
Term loan originated in 2019	805,620,000
Term loan originated in 2018	314,992,000
Term loan originated in 2017	174,058,000
Term loan originated in 2016	114,948,000
Term loan originated prior to 2016	80,311,000
Revolving Loans	1,187,323,000
Total loans	3,067,132,000	2,719,210,000
Commercial business | Pass/Not Rated
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in 2020	389,340,000
Term loan originated in 2019	801,118,000
Term loan originated in 2018	301,969,000
Term loan originated in 2017	169,835,000
Term loan originated in 2016	106,825,000
Term loan originated prior to 2016	75,423,000
Revolving Loans	1,165,155,000
Total loans	3,009,665,000	2,641,936,000
Commercial business | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in 2020	0
Term loan originated in 2019	2,649,000
Term loan originated in 2018	5,188,000
Term loan originated in 2017	43,000
Term loan originated in 2016	297,000
Term loan originated prior to 2016	6,000
Revolving Loans	12,412,000
Total loans	20,595,000	38,167,000
Commercial business | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in 2020	540,000
Term loan originated in 2019	1,853,000
Term loan originated in 2018	7,835,000
Term loan originated in 2017	4,180,000
Term loan originated in 2016	7,826,000
Term loan originated prior to 2016	4,870,000
Revolving Loans	9,756,000
Total loans	36,860,000	39,094,000
Commercial business | Doubtful/Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in 2020	0
Term loan originated in 2019	0
Term loan originated in 2018	0
Term loan originated in 2017	0
Term loan originated in 2016	0
Term loan originated prior to 2016	12,000
Revolving Loans	0
Total loans	12,000	13,000
Residential mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in 2020	3,367,000
Term loan originated in 2019	143,419,000
Term loan originated in 2018	300,780,000
Term loan originated in 2017	214,927,000
Term loan originated in 2016	74,077,000
Term loan originated prior to 2016	50,263,000
Revolving Loans	0
Total loans	786,833,000	834,170,000
Residential mortgage | Pass/Not Rated
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in 2020	3,367,000
Term loan originated in 2019	143,296,000
Term loan originated in 2018	300,555,000
Term loan originated in 2017	214,927,000
Term loan originated in 2016	72,358,000
Term loan originated prior to 2016	49,601,000
Revolving Loans	0
Total loans	784,104,000	831,139,000
Residential mortgage | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in 2020	0
Term loan originated in 2019	0
Term loan originated in 2018	0
Term loan originated in 2017	0
Term loan originated in 2016	0
Term loan originated prior to 2016	0
Revolving Loans	0
Total loans	0	0
Residential mortgage | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in 2020	0
Term loan originated in 2019	123,000
Term loan originated in 2018	225,000
Term loan originated in 2017	0
Term loan originated in 2016	1,719,000
Term loan originated prior to 2016	662,000
Revolving Loans	0
Total loans	2,729,000	3,031,000
Residential mortgage | Doubtful/Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in 2020	0
Term loan originated in 2019	0
Term loan originated in 2018	0
Term loan originated in 2017	0
Term loan originated in 2016	0
Term loan originated prior to 2016	0
Revolving Loans	0
Total loans	0	0
Consumer and other
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in 2020	275,000
Term loan originated in 2019	2,004,000
Term loan originated in 2018	3,088,000
Term loan originated in 2017	3,765,000
Term loan originated in 2016	6,896,000
Term loan originated prior to 2016	4,057,000
Revolving Loans	28,144,000
Total loans	48,229,000	54,920,000
Consumer and other | Pass/Not Rated
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in 2020	275,000
Term loan originated in 2019	2,004,000
Term loan originated in 2018	3,083,000
Term loan originated in 2017	3,621,000
Term loan originated in 2016	6,865,000
Term loan originated prior to 2016	3,470,000
Revolving Loans	28,144,000
Total loans	47,462,000	53,801,000
Consumer and other | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in 2020	0
Term loan originated in 2019	0
Term loan originated in 2018	0
Term loan originated in 2017	144,000
Term loan originated in 2016	0
Term loan originated prior to 2016	6,000
Revolving Loans	0
Total loans	150,000	166,000
Consumer and other | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in 2020	0
Term loan originated in 2019	0
Term loan originated in 2018	5,000
Term loan originated in 2017	0
Term loan originated in 2016	31,000
Term loan originated prior to 2016	581,000
Revolving Loans	0
Total loans	617,000	953,000
Consumer and other | Doubtful/Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in 2020	0
Term loan originated in 2019	0
Term loan originated in 2018	0
Term loan originated in 2017	0
Term loan originated in 2016	0
Term loan originated prior to 2016	0
Revolving Loans	0
Total loans	$ 0	$ 0

Loans Receivable and Allowanc_9

Loans Receivable and Allowance for Credit Losses - Loans Held For Investment - Reclassification to Held for Sale (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Transfer of loans held for investment to held for sale	$ 1,002	$ 33,390
Real estate | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Transfer of loans held for investment to held for sale	0	0
Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Transfer of loans held for investment to held for sale	$ 1,002	$ 33,390

Loans Receivable and Allowan_10

Loans Receivable and Allowance for Credit Losses - Additional Information (Details)	3 Months Ended		12 Months Ended
	Mar. 31, 2020USD ($)loan	Mar. 31, 2019USD ($)loan	Dec. 31, 2019USD ($)loan
Financing Receivable, Allowance for Credit Loss [Line Items]
Reasonable and supportable period at which point loss assumptions revert back to historical loss information	2 years
Reversion period	1 year
Non-modeled loans as percentage of total loan portfolio (less than)	3.00%
Positive or negative qualitative adjustment of the Loss Migration Ratio	0.25%
Total TDR loans	$ 61,207,000		$ 46,726,000
Number of loans | loan	5	16
Allowance for TDRs	$ 8,600,000		3,100,000
ACL for TDRs modified during period	49,000	$ 1,600,000
Total charge-offs of TDR loans modified	0	0
ACL for the TDRs that had payment defaults	136,000	134,000
Charge offs	14,000	$ 0
Real estate | TDR Loans on Accrual Status
Financing Receivable, Allowance for Credit Loss [Line Items]
Total TDR loans	30,651,000		23,664,000
Real estate | Commercial | TDR Loans on Accrual Status
Financing Receivable, Allowance for Credit Loss [Line Items]
Total TDR loans	$ 30,700,000		$ 23,700,000
Number of loans | loan	30		15
Commercial business
Financing Receivable, Allowance for Credit Loss [Line Items]
Number of loans | loan	1	7
Commercial business | TDR Loans on Accrual Status
Financing Receivable, Allowance for Credit Loss [Line Items]
Total TDR loans	$ 13,015,000		$ 11,845,000
Number of loans | loan	43		27
Consumer and other
Financing Receivable, Allowance for Credit Loss [Line Items]
Number of loans | loan	1	6
Consumer and other | TDR Loans on Accrual Status
Financing Receivable, Allowance for Credit Loss [Line Items]
Total TDR loans	$ 123,000		$ 200,000
Number of loans | loan	16		12
Minimum
Financing Receivable, Allowance for Credit Loss [Line Items]
Temporary modifications, period of interest only payments	3 months
Maximum
Financing Receivable, Allowance for Credit Loss [Line Items]
Temporary modifications, period of interest only payments	6 months

Loans Receivable and Allowan_11

Loans Receivable and Allowance for Credit Losses - Allowance for Loans, by Portfolio Segment and Evaluation Method (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
Loans by Portfolio Segment and Impairment Method [Abstract]
Individually evaluated loans	$ 118,699	$ 90,494
Impaired loans (recorded investment)		90,494
ACL on individually evaluated loans	$ 5,528	3,402
Specific allowance		$ 3,402
Individually evaluated loans ACL coverage	4.66%
Specific allowance to impaired loans		3.76%
Collectively evaluated loans	$ 12,464,717	$ 12,077,202
Other loans		12,182,771
ACL on collectively evaluated loans	$ 139,395	82,663
General allowance		$ 90,742
Collectively evaluated loans ACL coverage	1.12%
General allowance to other loans		0.74%
Total loans	$ 12,583,416	$ 12,276,007
Total loans	12,583,416	12,273,265
Total ACL	$ 144,923	$ 94,144	$ 94,217	$ 92,557
Total ACL to total loans	1.15%	0.77%
Real estate
Loans by Portfolio Segment and Impairment Method [Abstract]
Individually evaluated loans	$ 87,708	$ 64,598
ACL on individually evaluated loans	842	312
Collectively evaluated loans	8,593,514	8,502,603
ACL on collectively evaluated loans	93,803	48,616
Total loans	8,681,222	8,664,551
Total loans	8,681,222	8,664,965
Total ACL	94,645	53,593	53,137	56,767
Real estate | Residential
Loans by Portfolio Segment and Impairment Method [Abstract]
Individually evaluated loans	0
Impaired loans (recorded investment)		0
ACL on individually evaluated loans	0
Specific allowance		0
Collectively evaluated loans	56,727
Other loans		52,437
ACL on collectively evaluated loans	$ 399
General allowance		$ 204
Collectively evaluated loans ACL coverage	0.70%
General allowance to other loans		0.39%
Total loans	$ 56,727	$ 52,558
Total loans	56,727	52,437
Total ACL	$ 399	$ 204
Total ACL to total loans	0.70%	0.39%
Real estate | Commercial
Loans by Portfolio Segment and Impairment Method [Abstract]
Individually evaluated loans	$ 77,543
Impaired loans (recorded investment)		$ 54,433
ACL on individually evaluated loans	$ 842
Specific allowance		$ 312
Individually evaluated loans ACL coverage	1.09%
Specific allowance to impaired loans		0.57%
Collectively evaluated loans	$ 8,265,100
Other loans		$ 8,261,949
ACL on collectively evaluated loans	$ 91,718
General allowance		$ 51,400
Collectively evaluated loans ACL coverage	1.11%
General allowance to other loans		0.62%
Total loans	$ 8,342,643	$ 8,316,470
Total loans	8,342,643	8,316,382
Total ACL	$ 92,560	$ 51,712
Total ACL to total loans	1.11%	0.62%
Real estate | Construction
Loans by Portfolio Segment and Impairment Method [Abstract]
Individually evaluated loans	$ 10,165
Impaired loans (recorded investment)		$ 10,165
ACL on individually evaluated loans	0
Specific allowance		0
Collectively evaluated loans	271,687
Other loans		285,981
ACL on collectively evaluated loans	$ 1,686
General allowance		$ 1,677
Collectively evaluated loans ACL coverage	0.62%
General allowance to other loans		0.59%
Total loans	$ 281,852	$ 295,523
Total loans	281,852	296,146
Total ACL	$ 1,686	$ 1,677
Total ACL to total loans	0.60%	0.57%
Commercial business
Loans by Portfolio Segment and Impairment Method [Abstract]
Individually evaluated loans	$ 27,763	$ 22,842
Impaired loans (recorded investment)		22,842
ACL on individually evaluated loans	$ 4,568	3,073
Specific allowance		$ 3,073
Individually evaluated loans ACL coverage	16.45%
Specific allowance to impaired loans		13.45%
Collectively evaluated loans	$ 3,039,369	$ 2,689,468
Other loans		2,696,368
ACL on collectively evaluated loans	$ 38,315	26,914
General allowance		$ 29,959
Collectively evaluated loans ACL coverage	1.26%
General allowance to other loans		1.11%
Total loans	$ 3,067,132	$ 2,721,183
Total loans	3,067,132	2,719,210
Total ACL	$ 42,883	$ 33,032	33,074	28,484
Total ACL to total loans	1.40%	1.21%
Residential mortgage
Loans by Portfolio Segment and Impairment Method [Abstract]
Individually evaluated loans	$ 2,574	$ 2,753
Impaired loans (recorded investment)		2,753
ACL on individually evaluated loans	$ 37	10
Specific allowance		$ 10
Individually evaluated loans ACL coverage	1.44%
Specific allowance to impaired loans		0.36%
Collectively evaluated loans	$ 784,259	$ 831,259
Other loans		831,417
ACL on collectively evaluated loans	$ 5,742	5,913
General allowance		$ 5,915
Collectively evaluated loans ACL coverage	0.73%
General allowance to other loans		0.71%
Total loans	$ 786,833	$ 835,188
Total loans	786,833	834,170
Total ACL	$ 5,779	$ 5,925	6,017	5,207
Total ACL to total loans	0.73%	0.71%
Consumer and other
Loans by Portfolio Segment and Impairment Method [Abstract]
Individually evaluated loans	$ 654	$ 301
Impaired loans (recorded investment)		301
ACL on individually evaluated loans	$ 81	7
Specific allowance		$ 7
Individually evaluated loans ACL coverage	12.39%
Specific allowance to impaired loans		2.33%
Collectively evaluated loans	$ 47,575	$ 53,872
Other loans		54,619
ACL on collectively evaluated loans	$ 1,535	1,220
General allowance		$ 1,587
Collectively evaluated loans ACL coverage	3.23%
General allowance to other loans		2.91%
Total loans	$ 48,229	$ 55,085
Total loans	48,229	54,920
Total ACL	$ 1,616	$ 1,594	$ 1,989	$ 2,099
Total ACL to total loans	3.35%	2.90%

Loans Receivable and Allowan_12

Loans Receivable and Allowance for Credit Losses - Troubled Debt Restructurings on Financing Receivables (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2020USD ($)loan	Mar. 31, 2019USD ($)loan	Dec. 31, 2019USD ($)loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	$ 61,207		$ 46,726
Number of Loans | loan	5	16
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 1,415	$ 5,833
Post-Modification	$ 1,415	$ 5,833
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	7	11
Balance	$ 595	$ 5,673
Payment concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	15,709		10,213
Maturity / amortization concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	37,572		31,411
Rate concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	$ 7,926		5,102
Real estate | Residential
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0	0
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 0	$ 0
Post-Modification	$ 0	$ 0
Real estate | Commercial | Retail
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0	1
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 0	$ 101
Post-Modification	$ 0	$ 101
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0	1
Balance	$ 0	$ 48
Real estate | Commercial | Hotel & motel
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0	1
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 0	$ 152
Post-Modification	$ 0	$ 152
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0	1
Balance	$ 0	$ 73
Real estate | Commercial | Gas station & car wash
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	1	0
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 54	$ 0
Post-Modification	$ 54	$ 0
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0	0
Balance	$ 0	$ 0
Real estate | Commercial | Mixed use
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0	0
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 0	$ 0
Post-Modification	$ 0	$ 0
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0	0
Balance	$ 0	$ 0
Real estate | Commercial | Industrial & warehouse
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	1	0
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 261	$ 0
Post-Modification	$ 261	$ 0
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0	1
Balance	$ 0	$ 236
Real estate | Commercial | Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	1	1
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 788	$ 140
Post-Modification	$ 788	$ 140
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	2	0
Balance	$ 293	$ 0
Real estate | Construction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0	0
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 0	$ 0
Post-Modification	$ 0	$ 0
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0	0
Balance	$ 0	$ 0
Real estate | TDR Loans on Accrual Status
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	30,651		23,664
Real estate | TDR Loans on Accrual Status | Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	$ 30,700		$ 23,700
Number of Loans | loan	30		15
Real estate | TDR Loans on Accrual Status | Payment concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	$ 6,134		$ 4,708
Real estate | TDR Loans on Accrual Status | Maturity / amortization concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	18,592		14,537
Real estate | TDR Loans on Accrual Status | Rate concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	5,925		4,419
Real estate | TDR Loans on Nonaccrual Status
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	10,410		4,640
Real estate | TDR Loans on Nonaccrual Status | Payment concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	8,460		4,306
Real estate | TDR Loans on Nonaccrual Status | Maturity / amortization concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	1,497		0
Real estate | TDR Loans on Nonaccrual Status | Rate concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	$ 453		334
Commercial business
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	1	7
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 294	$ 5,407
Post-Modification	$ 294	$ 5,407
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	2	7
Balance	$ 292	$ 5,311
Commercial business | TDR Loans on Accrual Status
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	$ 13,015		$ 11,845
Number of Loans | loan	43		27
Commercial business | TDR Loans on Accrual Status | Payment concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	$ 822		$ 886
Commercial business | TDR Loans on Accrual Status | Maturity / amortization concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	12,088		10,778
Commercial business | TDR Loans on Accrual Status | Rate concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	105		181
Commercial business | TDR Loans on Nonaccrual Status
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	6,888		6,255
Commercial business | TDR Loans on Nonaccrual Status | Payment concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	243		259
Commercial business | TDR Loans on Nonaccrual Status | Maturity / amortization concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	5,202		5,931
Commercial business | TDR Loans on Nonaccrual Status | Rate concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	$ 1,443		65
Residential mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0	0
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 0	$ 0
Post-Modification	$ 0	$ 0
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0	0
Balance	$ 0	$ 0
Residential mortgage | TDR Loans on Accrual Status
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0		0
Residential mortgage | TDR Loans on Accrual Status | Payment concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0		0
Residential mortgage | TDR Loans on Accrual Status | Maturity / amortization concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0		0
Residential mortgage | TDR Loans on Accrual Status | Rate concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0		0
Residential mortgage | TDR Loans on Nonaccrual Status
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0		0
Residential mortgage | TDR Loans on Nonaccrual Status | Payment concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	$ 0		0
Residential mortgage | TDR Loans on Nonaccrual Status | Maturity / amortization concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs			0
Residential mortgage | TDR Loans on Nonaccrual Status | Rate concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs			0
Consumer and other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	1	6
Troubled Debt Restructuring, By Loan Class
Pre-Modification	$ 18	$ 33
Post-Modification	$ 18	$ 33
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	3	1
Balance	$ 10	$ 5
Consumer and other | TDR Loans on Accrual Status
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	$ 123		$ 200
Number of Loans | loan	16		12
Consumer and other | TDR Loans on Accrual Status | Payment concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	$ 50		$ 54
Consumer and other | TDR Loans on Accrual Status | Maturity / amortization concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	73		43
Consumer and other | TDR Loans on Accrual Status | Rate concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0		103
Consumer and other | TDR Loans on Nonaccrual Status
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	120		122
Consumer and other | TDR Loans on Nonaccrual Status | Payment concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0		0
Consumer and other | TDR Loans on Nonaccrual Status | Maturity / amortization concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	120		122
Consumer and other | TDR Loans on Nonaccrual Status | Rate concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	$ 0		$ 0

Leases - Additional Information

Leases - Additional Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020USD ($)lease	Mar. 31, 2019USD ($)	Dec. 31, 2019USD ($)
Lessee, Lease, Description [Line Items]
Extension options, term of extension	5 years
Operating lease right-of-use assets	$ 56,696		$ 58,593
Operating lease liabilities	58,827		$ 60,506
Short-term operating lease liability	13,000
Long-term operating lease liability	$ 45,800
Number of leases extended | lease	3
Number of new leases | lease	0
Rent expense	$ 4,500	$ 4,700
Minimum
Lessee, Lease, Description [Line Items]
Remaining lease term for operating leases	1 year
Maximum
Lessee, Lease, Description [Line Items]
Remaining lease term for operating leases	11 years

Leases - Net Lease Cost (Detail

Leases - Net Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Leases [Abstract]
Operating lease cost	$ 3,945	$ 4,123
Short term lease cost	0	9
Variable lease cost	767	703
Sublease income	(212)	(157)
Net lease cost	$ 4,500	$ 4,678

Leases - Other Information (Det

Leases - Other Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash outflows for operating leases	$ 3,724	$ 3,663
Right-of-use assets obtained in exchange for lease liabilities, net	$ 1,279	$ 62,360
Weighted-average remaining lease term - operating leases	5 years 8 months 12 days	6 years 2 months 12 days
Weighted-average discount rate - operating leases	3.07%	3.20%

Leases - Maturities of Remainin

Leases - Maturities of Remaining Lease Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Leases [Abstract]
2020	$ 11,014
2021	14,127
2022	10,038
2023	7,905
2024	6,357
2025 and thereafter	15,042
Total lease payments	64,483
Less: imputed interest	5,656
Total lease obligations	$ 58,827	$ 60,506

Deposits (Details)

Deposits (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Deposits Disclosure [Line Items]
Time Deposits, $250,000 or More	$ 1,850	$ 1,860
Securities pledged as collateral	356.8	340.9
Brokered deposits	1,750	1,480
Money market and NOW accounts
Deposits Disclosure [Line Items]
Brokered deposits	1,110	538.2
Time deposit accounts
Deposits Disclosure [Line Items]
Brokered deposits	647.3	1,200
California State Treasurer
Deposits Disclosure [Line Items]
Time Deposits, $250,000 or More	$ 300	300
Required eligible collateral pledge on outstanding deposits, minimum percentage	110.00%
Securities pledged as collateral	$ 339.8	$ 333.2

Borrowings - Narrative (Details

Borrowings - Narrative (Details) - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Percent of assets	25.00%
Maximum borrowing capacity	$ 3,920,000,000	$ 3,850,000,000
Percent outstanding advances	100.00%
FHLB advances	$ 675,000,000	625,000,000
Unused funds	3,200,000,000
Federal funds purchased	$ 0	0
Percent of qualifying assets (up to)	95.00%
Securities pledged as collateral	$ 356,800,000	$ 340,900,000
Weighted Average
Debt Instrument [Line Items]
FHLB advances, interest rate	1.41%	1.84%
Minimum
Debt Instrument [Line Items]
FHLB advances, interest rate	0.21%
Maximum
Debt Instrument [Line Items]
FHLB advances, interest rate	2.39%
Qualifying Loans
Debt Instrument [Line Items]
Asset balance used to determine maximum borrowing capacity from federal reserve bank	$ 960,100,000
FRB Discount Window
Debt Instrument [Line Items]
Securities pledged as collateral	0
Total available borrowing capacity	762,100,000	$ 740,600,000
Amount outstanding	0	0
Unsecured Credit Facility with FHLB
Debt Instrument [Line Items]
Unsecured credit facility, maximum borrowing capacity	95,000,000	95,000,000
Mortgage Loans on Real Estate
Debt Instrument [Line Items]
Pledged as collateral	$ 7,040,000,000	$ 6,760,000,000

Borrowings - Maturities of FHLB

Borrowings - Maturities of FHLB Borrowings (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Debt Disclosure [Abstract]
2020	$ 385,000
2021	145,000
2022	145,000
Total	$ 675,000	$ 625,000

Subordinated Debentures and C_3

Subordinated Debentures and Convertible Notes - Narrative (Details)	Jun. 07, 2018USD ($)$ / shares	Mar. 31, 2020USD ($)grantor_trust	Mar. 31, 2019USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Jun. 30, 2018USD ($)
Subordinated Borrowing [Line Items]
Number of wholly owned subsidiary grantor trusts | grantor_trust		9
Amount of pooled trust preferred securities issued		$ 126,000,000
Right to defer consecutive payments of interest, maximum term		5 years
Carrying value of Debentures		$ 103,318,000		$ 103,035,000
Other assets
Subordinated Borrowing [Line Items]
Investment in common trust securities		3,900,000		3,900,000
Carrying Value of Debentures
Subordinated Borrowing [Line Items]
Carrying value of Debentures		103,318,000		103,000,000
Remaining discounts on acquired Debentures		26,600,000		$ 26,900,000
Trust Preferred Securities Subject to Mandatory Redemption
Subordinated Borrowing [Line Items]
Amount of pooled trust preferred securities issued		$ 126,000,000
Percent included in tier one capital, maximum		25.00%
Excess of percent threshold included in tier two capital		25.00%
Convertible Notes
Subordinated Borrowing [Line Items]
Aggregate principal amount issued		$ 217,500,000			$ 200,000,000	$ 217,500,000
Interest rate					2.00%
Additional face amount issued as part of initial offering over-allotment option	$ 17,500,000
Initial conversion rate	0.0450760	0.0450760
Initial conversion price (in dollars per share) | $ / shares	$ 22.18
Premium percentage to closing stock price on date of pricing of the notes	22.50%
Call option, percentage of principal amount in cash	100.00%
Repurchase or put option, percentage of principal amount in cash	100.00%
Proceeds from convertible notes, net of issuance fees	$ 213,200,000
Proceeds down-streamed to the Bank as equity	113,200,000
Amount of proceeds from convertible notes authorized for repurchase of common stock	$ 100,000,000
Number of outstanding years for which non-cash interest expense and issuance cost capitalization expense will be recorded	5 years	5 years		5 years
Interest expense on convertible notes		$ 2,300,000	$ 2,300,000
Convertible Notes | Discount Rate
Subordinated Borrowing [Line Items]
Discount rate	0.0425

Subordinated Debentures and C_4

Subordinated Debentures and Convertible Notes - Summary of Trust Preferred Securities and Debentures (Details) - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Subordinated Borrowing [Line Items]
Trust Preferred Security Amount	$ 126,000,000
Carrying Value of Debentures	103,318,000	$ 103,035,000
Trust Preferred Security Amount
Subordinated Borrowing [Line Items]
Trust Preferred Security Amount	126,000,000
Carrying Value of Debentures
Subordinated Borrowing [Line Items]
Carrying Value of Debentures	$ 103,318,000	$ 103,000,000
Nara Capital Trust III
Subordinated Borrowing [Line Items]
Current Rate	3.89%
Nara Capital Trust III | Trust Preferred Security Amount
Subordinated Borrowing [Line Items]
Trust Preferred Security Amount	$ 5,000,000
Nara Capital Trust III | Carrying Value of Debentures
Subordinated Borrowing [Line Items]
Carrying Value of Debentures	$ 5,155,000
Nara Statutory Trust IV
Subordinated Borrowing [Line Items]
Current Rate	4.68%
Nara Statutory Trust IV | Trust Preferred Security Amount
Subordinated Borrowing [Line Items]
Trust Preferred Security Amount	$ 5,000,000
Nara Statutory Trust IV | Carrying Value of Debentures
Subordinated Borrowing [Line Items]
Carrying Value of Debentures	$ 5,155,000
Nara Statutory Trust V
Subordinated Borrowing [Line Items]
Current Rate	3.79%
Nara Statutory Trust V | Trust Preferred Security Amount
Subordinated Borrowing [Line Items]
Trust Preferred Security Amount	$ 10,000,000
Nara Statutory Trust V | Carrying Value of Debentures
Subordinated Borrowing [Line Items]
Carrying Value of Debentures	$ 10,310,000
Nara Statutory Trust VI
Subordinated Borrowing [Line Items]
Current Rate	2.39%
Nara Statutory Trust VI | Trust Preferred Security Amount
Subordinated Borrowing [Line Items]
Trust Preferred Security Amount	$ 8,000,000
Nara Statutory Trust VI | Carrying Value of Debentures
Subordinated Borrowing [Line Items]
Carrying Value of Debentures	$ 8,248,000
Center Capital Trust I
Subordinated Borrowing [Line Items]
Current Rate	4.68%
Center Capital Trust I | Trust Preferred Security Amount
Subordinated Borrowing [Line Items]
Trust Preferred Security Amount	$ 18,000,000
Center Capital Trust I | Carrying Value of Debentures
Subordinated Borrowing [Line Items]
Carrying Value of Debentures	$ 14,290,000
Wilshire Trust II
Subordinated Borrowing [Line Items]
Current Rate	2.63%
Wilshire Trust II | Trust Preferred Security Amount
Subordinated Borrowing [Line Items]
Trust Preferred Security Amount	$ 20,000,000
Wilshire Trust II | Carrying Value of Debentures
Subordinated Borrowing [Line Items]
Carrying Value of Debentures	$ 15,799,000
Wilshire Trust III
Subordinated Borrowing [Line Items]
Current Rate	2.14%
Wilshire Trust III | Trust Preferred Security Amount
Subordinated Borrowing [Line Items]
Trust Preferred Security Amount	$ 15,000,000
Wilshire Trust III | Carrying Value of Debentures
Subordinated Borrowing [Line Items]
Carrying Value of Debentures	$ 11,181,000
Wilshire Trust IV
Subordinated Borrowing [Line Items]
Current Rate	2.12%
Wilshire Trust IV | Trust Preferred Security Amount
Subordinated Borrowing [Line Items]
Trust Preferred Security Amount	$ 25,000,000
Wilshire Trust IV | Carrying Value of Debentures
Subordinated Borrowing [Line Items]
Carrying Value of Debentures	$ 18,114,000
Saehan Capital Trust I
Subordinated Borrowing [Line Items]
Current Rate	2.99%
Saehan Capital Trust I | Trust Preferred Security Amount
Subordinated Borrowing [Line Items]
Trust Preferred Security Amount	$ 20,000,000
Saehan Capital Trust I | Carrying Value of Debentures
Subordinated Borrowing [Line Items]
Carrying Value of Debentures	$ 15,066,000

Subordinated Debentures and C_5

Subordinated Debentures and Convertible Notes - Schedule of Convertible Debt (Details) - Convertible Notes - USD ($) $ in Thousands	Jun. 07, 2018	Mar. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Amortization/ Capitalization Period	5 years	5 years	5 years
Gross Carrying Amount
Convertible notes principal balance		$ 217,500	$ 217,500
Discount		(21,880)	(21,880)
Issuance costs to be capitalized		(4,119)	(4,119)
Carrying balance of convertible notes		191,501	191,501
Accumulated Amortization / Capitalization
Discount		7,715	6,659
Issuance costs to be capitalized		1,500	1,298
Carrying balance of convertible notes		9,215	7,957
Carrying Amount
Convertible notes principal balance		217,500	217,500
Discount		(14,165)	(15,221)
Issuance costs to be capitalized		(2,619)	(2,821)
Carrying balance of convertible notes		$ 200,716	$ 199,458

Derivative Financial Instrume_3

Derivative Financial Instruments (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Interest rate lock commitments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount	$ 65,200	$ 10,500
Other assets | Not Designated as Hedging Instrument | Correspondent Banks | Interest rate swaps
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount	$ 0	$ 137,890
Weighted average remaining term (years)	0 years	7 years 2 months 12 days
Pay fixed rate (weighted average)	0.00%	3.62%
Received variable rate (weighted average)	0.00%	3.83%
Estimated fair value	$ 0	$ 739
Other assets | Not Designated as Hedging Instrument | Customers | Interest rate swaps
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount	$ 448,308	$ 282,326
Weighted average remaining term (years)	7 years	6 years 10 months 24 days
Pay fixed rate (weighted average)	4.03%	3.98%
Received variable rate (weighted average)	3.35%	4.48%
Estimated fair value	$ 37,890	$ 9,614
Other liabilities | Not Designated as Hedging Instrument | Correspondent Banks | Interest rate swaps
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount	$ 448,308	$ 282,326
Weighted average remaining term (years)	7 years	6 years 10 months 24 days
Pay fixed rate (weighted average)	3.35%	4.48%
Received variable rate (weighted average)	4.03%	3.98%
Estimated fair value	$ (37,890)	$ (9,614)
Other liabilities | Not Designated as Hedging Instrument | Customers | Interest rate swaps
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount	$ 0	$ 137,890
Weighted average remaining term (years)	0 years	7 years 2 months 12 days
Pay fixed rate (weighted average)	0.00%	3.62%
Received variable rate (weighted average)	0.00%	3.83%
Estimated fair value	$ 0	$ (739)

Derivative Financial Instrume_4

Derivative Financial Instruments - Summary of Derivative Notional Amounts and Fair Values (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Interest rate lock commitments
Derivative [Line Items]
Notional amount, derivative asset	$ 46,818	$ 10,540
Fair value, derivative asset	444	84
Notional amount, derivative liability	18,367	0
Fair value, derivative liability	(112)	0
Forward sale contracts related to mortgage banking | Short
Derivative [Line Items]
Notional amount, derivative asset	39,840	4,532
Fair value, derivative asset	478	11
Notional amount, derivative liability	25,345	6,008
Fair value, derivative liability	$ (170)	$ (16)

Commitments and contingencies_2

Commitments and contingencies (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Supply Commitment [Line Items]
Loss contingencies for all legal claims	$ 595	$ 440
Commitments to extend credit
Supply Commitment [Line Items]
Commitments and letters of credit	1,645,443	1,864,947
Standby letters of credit
Supply Commitment [Line Items]
Commitments and letters of credit	126,448	113,720
Other letters of credit
Supply Commitment [Line Items]
Commitments and letters of credit	28,924	37,627
Commitments to fund investments in affordable housing partnerships
Supply Commitment [Line Items]
Commitments and letters of credit	$ 20,688	$ 28,480

Goodwill, Intangible Assets, _3

Goodwill, Intangible Assets, and Servicing Assets - Intangible Assets (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Goodwill impairment	$ 0
Goodwill	464,450,000		$ 464,450,000
Gross Amount	25,605,000
Accumulated Amortization	(14,303,000)		(13,772,000)
Carrying Amount	11,302,000		11,833,000
Core Deposits
Finite-Lived Intangible Assets [Line Items]
Amortization expense related to core deposit intangible assets	$ 531,000	$ 557,000
Center Financial acquisition | Core Deposits
Finite-Lived Intangible Assets [Line Items]
Amortization Period	7 years
Gross Amount	$ 4,100,000
Accumulated Amortization	(4,100,000)		(4,100,000)
Carrying Amount	$ 0		0
Pacific International Bank acquisition | Core Deposits
Finite-Lived Intangible Assets [Line Items]
Amortization Period	7 years
Gross Amount	$ 604,000
Accumulated Amortization	(602,000)		(602,000)
Carrying Amount	$ 2,000		2,000
Foster Bankshares acquisition | Core Deposits
Finite-Lived Intangible Assets [Line Items]
Amortization Period	10 years
Gross Amount	$ 2,763,000
Accumulated Amortization	(2,171,000)		(2,120,000)
Carrying Amount	$ 592,000		643,000
Wilshire Bancorp acquisition | Core Deposits
Finite-Lived Intangible Assets [Line Items]
Amortization Period	10 years
Gross Amount	$ 18,138,000
Accumulated Amortization	(7,430,000)		(6,950,000)
Carrying Amount	$ 10,708,000		$ 11,188,000
Minimum | Core Deposits
Finite-Lived Intangible Assets [Line Items]
Amortization Period	7 years
Maximum | Core Deposits
Finite-Lived Intangible Assets [Line Items]
Amortization Period	10 years

Goodwill, Intangible Assets, _4

Goodwill, Intangible Assets, and Servicing Assets - Servicing Assets (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Servicing Asset at Amortized Cost, Balance [Roll Forward]
Balance at beginning of period	$ 16,417	$ 23,132	$ 23,132
Additions through originations of servicing assets	377	327
Amortization	(1,947)	(2,052)
Balance at end of period	14,847	$ 21,407	16,417
Principal balances of loans serviced for other institutions	$ 1,350,000		$ 1,350,000
SBA Servicing Assets: Weighted-average discount rate	10.41%		9.19%
SBA Servicing Assets: Constant prepayment rate	14.17%		14.17%
Mortgage Servicing Assets: Weighted-average discount rate	9.00%		9.25%
Mortgage Servicing Assets: Constant prepayment rate	9.46%		9.57%

Income Taxes Narrative (Details

Income Taxes Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Income tax provision	$ 6,462,000	$ 14,439,000
Pretax income	$ 32,415,000	$ 57,197,000
Effective income tax rate	19.94%	25.24%
Unrecognized tax benefits	$ 141,000		$ 141,000
Interest accrued	37,000		34,000
Penalties accrued	0		$ 0
Decrease in unrecognized tax benefits is reasonably possible	$ 141,000

Fair Value Measurements - Asset

Fair Value Measurements - Assets and Liabilities Measured at Fair Value, Recurring (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Costs to sell percentage	8.50%
Assets:
Securities available for sale, at fair value	$ 1,718,702	$ 1,715,987
Equity investments with readily determinable fair value	49,569	49,090
Collateralized mortgage obligations
Assets:
Securities available for sale, at fair value	701,547	736,655
Residential
Assets:
Securities available for sale, at fair value	385,396	352,897
Commercial
Assets:
Securities available for sale, at fair value	543,331	552,124
Corporate securities
Assets:
Securities available for sale, at fair value	4,344	4,200
Municipal securities
Assets:
Securities available for sale, at fair value	84,084	70,111
Recurring basis
Assets:
Equity investments with readily determinable fair value	22,478	22,123
Interest rate swaps	37,890	10,353
Mortgage banking derivatives	922	95
Liabilities:
Interest rate swaps	37,890	10,353
Mortgage banking derivatives	282	16
Recurring basis | Collateralized mortgage obligations
Assets:
Securities available for sale, at fair value	701,547	736,655
Recurring basis | Residential
Assets:
Securities available for sale, at fair value	385,396	352,897
Recurring basis | Commercial
Assets:
Securities available for sale, at fair value	543,331	552,124
Recurring basis | Corporate securities
Assets:
Securities available for sale, at fair value	4,344	4,200
Recurring basis | Municipal securities
Assets:
Securities available for sale, at fair value	84,084	70,111
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets:
Equity investments with readily determinable fair value	22,478	22,123
Interest rate swaps	0	0
Mortgage banking derivatives	0	0
Liabilities:
Interest rate swaps	0	0
Mortgage banking derivatives	0	0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Collateralized mortgage obligations
Assets:
Securities available for sale, at fair value	0	0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Residential
Assets:
Securities available for sale, at fair value	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
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate securities
Assets:
Securities available for sale, at fair value	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
Recurring basis | Significant Other Observable Inputs (Level 2)
Assets:
Equity investments with readily determinable fair value	0	0
Interest rate swaps	37,890	10,353
Mortgage banking derivatives	922	95
Liabilities:
Interest rate swaps	37,890	10,353
Mortgage banking derivatives	282	16
Recurring basis | Significant Other Observable Inputs (Level 2) | Collateralized mortgage obligations
Assets:
Securities available for sale, at fair value	701,547	736,655
Recurring basis | Significant Other Observable Inputs (Level 2) | Residential
Assets:
Securities available for sale, at fair value	385,396	352,897
Recurring basis | Significant Other Observable Inputs (Level 2) | Commercial
Assets:
Securities available for sale, at fair value	543,331	552,124
Recurring basis | Significant Other Observable Inputs (Level 2) | Corporate securities
Assets:
Securities available for sale, at fair value	4,344	4,200
Recurring basis | Significant Other Observable Inputs (Level 2) | Municipal securities
Assets:
Securities available for sale, at fair value	83,005	69,035
Recurring basis | Significant Unobservable Inputs (Level 3)
Assets:
Equity investments with readily determinable fair value	0	0
Interest rate swaps	0	0
Mortgage banking derivatives	0	0
Liabilities:
Interest rate swaps	0	0
Mortgage banking derivatives	0	0
Recurring basis | Significant Unobservable Inputs (Level 3) | Collateralized mortgage obligations
Assets:
Securities available for sale, at fair value	0	0
Recurring basis | Significant Unobservable Inputs (Level 3) | Residential
Assets:
Securities available for sale, at fair value	0	0
Recurring basis | Significant Unobservable Inputs (Level 3) | Commercial
Assets:
Securities available for sale, at fair value	0	0
Recurring basis | Significant Unobservable Inputs (Level 3) | Corporate securities
Assets:
Securities available for sale, at fair value	0	0
Recurring basis | Significant Unobservable Inputs (Level 3) | Municipal securities
Assets:
Securities available for sale, at fair value	$ 1,079	$ 1,076
Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Costs to sell percentage	8.50%
Discount Rate | Accounts Receivable | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate	0.20
Discount Rate | Accounts Receivable | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate	0.60
Discount Rate | Inventories | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate	0.50
Discount Rate | Inventories | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate	0.70

Fair Value Measurements - Rollf

Fair Value Measurements - Rollforward of Level 3 Assets (Details) - Level 3 - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	$ 1,076	$ 1,059
Change in fair value included in other comprehensive income (loss)	3	9
Ending Balance	$ 1,079	$ 1,068

Fair Value Measurements - Ass_2

Fair Value Measurements - Assets Measured at Fair Value, Non-Recurring (Details) - Non-recurring basis - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Collateral dependent loans at fair value | Real estate loans
Assets:
Assets	$ 13,381	$ 9,519
Collateral dependent loans at fair value | Commercial business
Assets:
Assets	9,101	8,942
OREO
Assets:
Assets	18,725	19,086
Quoted Prices in Active Markets for Identical Assets (Level 1) | Collateral dependent loans at fair value | Real estate loans
Assets:
Assets	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Collateral dependent loans at fair value | Commercial business
Assets:
Assets	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | OREO
Assets:
Assets	0	0
Significant Other Observable Inputs (Level 2) | Collateral dependent loans at fair value | Real estate loans
Assets:
Assets	0	0
Significant Other Observable Inputs (Level 2) | Collateral dependent loans at fair value | Commercial business
Assets:
Assets	0	0
Significant Other Observable Inputs (Level 2) | OREO
Assets:
Assets	0	0
Significant Unobservable Inputs (Level 3) | Collateral dependent loans at fair value | Real estate loans
Assets:
Assets	13,381	9,519
Significant Unobservable Inputs (Level 3) | Collateral dependent loans at fair value | Commercial business
Assets:
Assets	9,101	8,942
Significant Unobservable Inputs (Level 3) | OREO
Assets:
Assets	$ 18,725	$ 19,086

Fair Value Measurements - Total

Fair Value Measurements - Total Net Gains Losses on Assets Measured at Fair Value on a Non-Recurring Basis (Details) - Change during period - Non-recurring basis - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Collateral dependent 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	$ (4,659)	$ 1,048
Collateral dependent loans at fair value | Commercial business
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total gains (losses), fair value	(4,656)	(3,231)
Collateral dependent loans at fair value | Consumer
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total gains (losses), fair value	(608)	(285)
OREO
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total gains (losses), fair value	$ (826)	$ 62

Fair Value Measurements - Carry

Fair Value Measurements - Carrying Amounts and Estimated Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Financial Assets:
Equity investments without readily determinable fair values	$ 27,100	$ 27,000
Level 1 | Carrying Amount
Financial Assets:
Cash and cash equivalents	802,033	698,567
Financial Liabilities:
Convertible debt	200,716	199,458
Level 1 | Estimated Fair Value
Financial Assets:
Cash and cash equivalents	802,033	698,567
Financial Liabilities:
Convertible debt	178,933	206,210
Level 2/3 | Carrying Amount
Financial Assets:
Accrued interest receivable	30,450	30,772
Level 2/3 | Estimated Fair Value
Financial Assets:
Accrued interest receivable	30,450	30,772
Level 2 | Carrying Amount
Financial Assets:
Interest bearing deposits in other financial institutions	29,162	29,162
Equity investments without readily determinable fair values	27,091	26,967
Loans held for sale	8,281	54,271
Customers’ liabilities on acceptances	1,951	1,117
Financial Liabilities:
Noninterest bearing deposits	3,010,143	3,108,687
Saving and other interest bearing demand deposits	5,123,577	4,259,707
Time deposits	4,702,847	5,158,970
FHLB advances	675,000	625,000
Subordinated debentures	103,318	103,035
Accrued interest payable	30,436	33,810
Acceptances outstanding	1,951	1,117
Level 2 | Estimated Fair Value
Financial Assets:
Interest bearing deposits in other financial institutions	29,250	29,235
Equity investments without readily determinable fair values	27,091	26,967
Loans held for sale	8,489	56,011
Customers’ liabilities on acceptances	1,951	1,117
Financial Liabilities:
Noninterest bearing deposits	3,010,143	3,108,687
Saving and other interest bearing demand deposits	5,123,577	4,259,707
Time deposits	4,729,396	5,182,405
FHLB advances	692,331	628,903
Subordinated debentures	105,822	114,690
Accrued interest payable	30,436	33,810
Acceptances outstanding	1,951	1,117
Level 3 | Carrying Amount
Financial Assets:
Loans receivable—net	12,438,493	12,181,863
Servicing assets, net	14,847	16,417
Level 3 | Estimated Fair Value
Financial Assets:
Loans receivable—net	12,373,370	12,143,727
Servicing assets, net	$ 16,780	$ 18,966

Stockholders' Equity - Discussi

Stockholders' Equity - Discussion of Equity (Details) - USD ($)	3 Months Ended		7 Months Ended	10 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019	Mar. 31, 2020	Jun. 30, 2019	Dec. 31, 2018
Equity [Abstract]
Total stockholders’ equity	$ 2,018,088,000	$ 1,946,211,000	$ 2,036,011,000	$ 2,018,088,000		$ 1,903,211,000
Common stock repurchased and recorded as treasury stock (in shares)	2,716,034		9,945,547	12,661,581
Repurchase of treasury stock	$ 36,180,000		$ 163,800,000	$ 200,000,000
Share repurchase program, authorized amount	$ 50,000,000			$ 50,000,000	$ 50,000,000
Dividends paid (in dollars per share)	$ 0.14	$ 0.14

Stockholders' Equity - Changes

Stockholders' Equity - Changes in Accumulated Other Comprehensive (Loss) Income (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	$ 2,036,011,000	$ 1,903,211,000
Unrealized gain on securities available for sale	38,853,000	24,666,000
Reclassification adjustments for net gains realize in net income	0	0
Tax effect	(11,553,000)	(7,319,000)
Other comprehensive income, net of tax	27,300,000	17,347,000
Balance at end of period	2,018,088,000	1,946,211,000
Other reclassifications out of accumulated other comprehensive income (loss)	0	0
Accumulated other comprehensive (loss) income, net
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	9,149,000	(32,705,000)
Other comprehensive income, net of tax	27,300,000	17,347,000
Balance at end of period	$ 36,449,000	$ (15,358,000)

Stock-Based Compensation - Plan

Stock-Based Compensation - Plan Description (Details) - shares	3 Months Ended
	Mar. 31, 2020	May 23, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for future grant (in shares)	3,611,849
ISOs, SARs, and NQSOs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Contractual term	10 years
ISOs, SARs, and NQSOs | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years
ISOs, SARs, and NQSOs | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	5 years
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
2019 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares initially available for grant to participants (in shares)		4,400,000
2019 Stock Incentive Plan | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Purchase price of common stock, percent	100.00%
2019 Stock Incentive Plan | Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Contractual term	10 years

Stock-Based Compensation - Stoc

Stock-Based Compensation - Stock Option Activity (Details) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2020USD ($)$ / sharesshares
Number of Shares
Outstanding - beginning of period (in shares) | shares	935,211
Granted (in shares) | shares	0
Exercised (in shares) | shares	0
Expired (in shares) | shares	(14,461)
Forfeited (in shares) | shares	0
Outstanding - end of period (in shares) | shares	920,750
Weighted-Average Exercise Price Per Share
Outstanding - beginning of period (in dollars per share) | $ / shares	$ 15.34
Granted (in dollars per share) | $ / shares	0
Exercised (in dollars per share) | $ / shares	0
Expired (in dollars per share) | $ / shares	16.70
Forfeited (in dollars per share) | $ / shares	0
Outstanding - end of period (in dollars per share) | $ / shares	$ 15.32
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Options exercisable - end of period (in shares) | shares	847,211
Options exercisable, Weighted-Average Exercise Price Per Share (in dollars per share) | $ / shares	$ 15.12
Outstanding, Weighted-Average Remaining Contractual Life (Years)	5 years 2 months 26 days
Options exercisable, Weighted-Average Remaining Contractual Life (Years)	5 years 1 month 13 days
Outstanding, Aggregate Intrinsic Value | $	$ 350
Options exercisable, Aggregate Intrinsic Value | $	$ 350

Stock-Based Compensation - Rest

Stock-Based Compensation - Restricted Stock and Performance Unit Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]
Allocated share-based compensation expense	$ 2,000	$ 815
Tax benefit from compensation expense	397	206
Unrecognized compensation expense related to non-vested stock option grants	$ 202
Restricted stock and performance units
Number of Shares
Outstanding - beginning of period (in shares)	1,035,744
Granted (in shares)	416,585
Vested (in shares)	(201,722)
Forfeited (in shares)	(37,032)
Outstanding - end of period (in shares)	1,213,575
Weighted-Average Grant Date Fair Value
Outstanding - beginning of period (in dollars per share)	$ 14.08
Granted (in dollars per share)	11.66
Vested (in dollars per share)	14.53
Forfeited (in dollars per share)	12.81
Outstanding - end of period (in dollars per share)	$ 13.21
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	$ 2,000	347
Total compensation cost not yet recognized, period for recognition	1 year 9 months 29 days
Unrecognized compensation expense related to non-vested equity instruments other than options	$ 11,300
Employee Stock Purchase Plan (ESPP)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]
Discount rate to the closing price, purchase date	10.00%
Maximum amount of common shares purchased under ESPP of employee's base salary, percent	20.00%
Cap amount for shares purchased per employee	$ 25
Allocated share-based compensation expense	$ 71	$ 75
Stock options
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]
Total compensation cost not yet recognized, period for recognition	1 year 5 months 1 day

Regulatory Matters (Details)

Regulatory Matters (Details) - USD ($) $ in Thousands	Jan. 01, 2020	Mar. 31, 2020	Dec. 31, 2019
Company
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common equity Tier 1 capital, Actual		$ 1,527,666	$ 1,553,697
Common equity Tier 1 capital, Ratio		11.44%	11.76%
Total capital (to risk-weighted assets), Amount
Total capital, Actual		$ 1,746,523	$ 1,747,611
Total capital, Required For Capital Adequacy Purposes		1,067,853	1,056,664
Total capital, Minimum Capital Adequacy With Capital Conservation Buffer		1,401,557	1,386,871
Tier I capital (to risk-weighted assets), Amount
Tier 1 capital, Actual		1,627,083	1,652,831
Tier 1 capital, Required For Capital Adequacy Purposes		800,890	792,498
Tier 1 capital, Minimum Capital Adequacy With Capital Conservation Buffer		1,134,594	1,122,705
Tier I capital (to average assets), Amount
Tier 1 capital, Actual		1,627,083	1,652,831
Tier 1 capital, Required For Capital Adequacy Purposes		$ 598,392	$ 589,367
Total capital and Tier I capital (to risk-weighted assets), Ratio
Total capital (to Risk Weighted Assets), Actual		13.08%	13.23%
Total capital (to Risk Weighted Assets), Required For Capital Adequacy Purposes		8.00%	8.00%
Total capital (to Risk Weighted assets), Minimum Capital Adequacy With Capital Conservation Buffer		10.50%	10.50%
Tier 1 capital (to Risk Weighted Assets), Actual		12.19%	12.51%
Tier 1 capital (to Risk Weighted Assets), Required For Capital Adequacy Purposes		6.00%	6.00%
Tier 1 capital (to Risk Weighted Assets), Minimum Capital Adequacy With Capital Conservation Buffer		8.50%	8.50%
Tier I capital (to average assets), Ratio
Tier I Capital (to Average Assets), Actual (Leverage)		10.88%	11.22%
Tier I Capital (to Average Assets), Minimum For Capital Adequacy Purposes (Leverage)		4.00%	4.00%
Bank
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common equity Tier 1 capital, Actual		$ 1,804,000	$ 1,811,862
Common equity Tier 1 capital, Ratio		13.52%	13.72%
Common equity Tier 1 capital, Required To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount		$ 867,533	$ 858,462
Total capital (to risk-weighted assets), Amount
Total capital, Actual		1,950,169	1,906,642
Total capital, Required For Capital Adequacy Purposes		1,067,733	1,056,569
Total capital, Minimum Capital Adequacy With Capital Conservation Buffer		1,401,400	1,386,747
Total capital, Required To Be Well Capitalized Under Prompt Corrective Action Provisions		1,334,667	1,320,711
Tier I capital (to risk-weighted assets), Amount
Tier 1 capital, Actual		1,804,000	1,811,862
Tier 1 capital, Required For Capital Adequacy Purposes		800,800	792,427
Tier 1 capital, Minimum Capital Adequacy With Capital Conservation Buffer		934,267	924,498
Tier 1 capital, Required To Be Well Capitalized Under Prompt Corrective Action Provisions		1,067,733	1,056,569
Tier I capital (to average assets), Amount
Tier 1 capital, Actual		1,804,000	1,811,862
Tier 1 capital, Required For Capital Adequacy Purposes		598,682	589,604
Tier 1 capital, Required To Be Well Capitalized Under Prompt Corrective Action Provisions		$ 748,353	$ 737,005
Total capital and Tier I capital (to risk-weighted assets), Ratio
Total capital (to Risk Weighted Assets), Actual		14.61%	14.44%
Total capital (to Risk Weighted Assets), Required For Capital Adequacy Purposes		8.00%	8.00%
Total capital (to Risk Weighted assets), Minimum Capital Adequacy With Capital Conservation Buffer		10.50%	10.50%
Total capital (to Risk Weighted Assets), Required To Be Well Capitalized Under Prompt Corrective Action Provisions		10.00%	10.00%
Tier 1 capital (to Risk Weighted Assets), Actual		13.52%	13.72%
Tier 1 capital (to Risk Weighted Assets), Required For Capital Adequacy Purposes		6.00%	6.00%
Tier 1 capital (to Risk Weighted Assets), Minimum Capital Adequacy With Capital Conservation Buffer		8.50%	8.50%
Tier 1 capital (to Risk Weighted Assets), Required To Be Well Capitalized Under Prompt Corrective Action Provisions		8.00%	8.00%
Tier I capital (to average assets), Ratio
Tier I Capital (to Average Assets), Actual (Leverage)		12.05%	12.29%
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 | Company
Tier I capital (to risk-weighted assets), Amount
Tier 1 capital, Required For Capital Adequacy Purposes		$ 600,667	$ 594,373
Tier 1 capital, Minimum Capital Adequacy With Capital Conservation Buffer		$ 943,371	$ 924,581
Total capital and Tier I capital (to risk-weighted assets), Ratio
Tier 1 capital (to Risk Weighted Assets), Required For Capital Adequacy Purposes		4.50%	4.50%
Tier 1 capital (to Risk Weighted Assets), Minimum Capital Adequacy With Capital Conservation Buffer		7.00%	7.00%
Common Equity Tier 1 | Bank
Tier I capital (to risk-weighted assets), Amount
Tier 1 capital, Required For Capital Adequacy Purposes		$ 600,600	$ 594,320
Tier 1 capital, Minimum Capital Adequacy With Capital Conservation Buffer		$ 934,267	$ 924,498
Total capital and Tier I capital (to risk-weighted assets), Ratio
Tier 1 capital (to Risk Weighted Assets), Required For Capital Adequacy Purposes		4.50%	4.50%
Tier 1 capital (to Risk Weighted Assets), Minimum Capital Adequacy With Capital Conservation Buffer		7.00%	7.00%
Tier 1 capital (to Risk Weighted Assets), Required To Be Well Capitalized Under Prompt Corrective Action Provisions		6.50%	6.50%
CECL day 1 adoption
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Cumulative-effect adjustment, net of taxes to decrease retained earnings	$ 18,800

Revenue Recognition - Service C

Revenue Recognition - Service Charged on Deposit Accounts (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Disaggregation of Revenue [Line Items]
Service fees on deposit accounts	$ 4,133	$ 4,317
Wire transfer fees	998	1,089
Wire transfer fees
Disaggregation of Revenue [Line Items]
Wire transfer fees	806	934
Foreign exchange fees
Disaggregation of Revenue [Line Items]
Wire transfer fees	192	155
Noninterest Bearing Deposits
Disaggregation of Revenue [Line Items]
Service fees on deposit accounts	4,109	4,301
Noninterest Bearing Deposits | Monthly service charges
Disaggregation of Revenue [Line Items]
Service fees on deposit accounts	368	423
Noninterest Bearing Deposits | Customer analysis charges
Disaggregation of Revenue [Line Items]
Service fees on deposit accounts	1,870	1,723
Noninterest Bearing Deposits | NSF charges
Disaggregation of Revenue [Line Items]
Service fees on deposit accounts	1,655	1,941
Noninterest Bearing Deposits | Other service charges
Disaggregation of Revenue [Line Items]
Service fees on deposit accounts	216	214
Interest-bearing Deposits | Monthly service charges
Disaggregation of Revenue [Line Items]
Service fees on deposit accounts	$ 24	$ 16

Revenue Recognition - OREO Inco

Revenue Recognition - OREO Income (Expense) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenue from Contract with Customer [Abstract]
Gains (losses) on sales of OREO	$ (61)	$ 3

Subsequent Events (Details)

Subsequent Events (Details) $ in Millions	3 Months Ended
	Mar. 31, 2020cycle	May 06, 2020USD ($)
COVID-19 Relief, Loan Modification Program
Subsequent Event [Line Items]
Loan modification program requirements, maximum period of payment delinquency as of December 31, 2019	30 days
COVID-19 Relief, Loan Modification Program | Temporary Forbearance Plans | Residential mortgage
Subsequent Event [Line Items]
Loan modification program, period of temporary forbearance, during which credit reporting will be suspended and late charges will be waived	90 days
COVID-19 Relief, Loan Modification Program | Deferral of Minimum Payments | Credit Card Customers
Subsequent Event [Line Items]
Loan modification program, deferral of minimum credit card payments without payment, number of payment cycles (up to) | cycle	2
Subsequent Event
Subsequent Event [Line Items]
CARES Act, PPP loans processed		$ 500
Subsequent Event | COVID-19 Relief, Loan Modification Program
Subsequent Event [Line Items]
Loan modification program, amount of aggregate loan balances for loan modifications processed		$ 1,410