Hope Bancorp (HOPE) 10-Q 4 Nov 22 2022 Q3 Quarterly report Financial data

Cover

Cover - shares	9 Months Ended
	Sep. 30, 2022	Nov. 02, 2022
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2022
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,
Entity Address, Address Line Two	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, par value $0.001 per share
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 (in shares)		119,481,768
Amendment Flag	false
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q3
Entity Central Index Key	0001128361
Current Fiscal Year End Date	--12-31

Consolidated Statements Of Fina

Consolidated Statements Of Financial Condition - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Cash and cash equivalents:
Cash and due from banks	$ 230,250	$ 271,319
Interest bearing cash in other banks	101,086	44,947
Total cash and cash equivalents	331,336	316,266
Interest bearing deposits in other financial institutions	3,968	12,851
Investment securities available for sale, at fair value	1,993,348	2,666,275
Investment securities held to maturity, at amortized cost; fair value of $258,677 and $0 at September 30, 2022 and December 31, 2021, respectively	271,185	0
Equity investments	42,324	57,860
Loans held for sale, at the lower of cost or fair value	41,989	99,049
Loans receivable, net of allowance for credit losses of $160,561 and $140,550 at September 30, 2022 and December 31, 2021, respectively	15,330,626	13,812,193
Other real estate owned (“OREO”), net	1,480	2,597
Federal Home Loan Bank (“FHLB”) stock, at cost	18,900	17,250
Premises and equipment, net	46,169	45,667
Accrued interest receivable	42,363	41,842
Deferred tax assets, net	149,383	49,719
Customers’ liabilities on acceptances	570	1,521
Bank owned life insurance (“BOLI”)	76,788	77,081
Investments in affordable housing partnerships	50,259	58,387
Operating lease right-of-use assets, net	55,362	52,701
Goodwill	464,450	464,450
Core deposit intangible assets, net	6,212	7,671
Servicing assets, net	11,601	10,418
Other assets	145,075	95,263
Total assets	19,083,388	17,889,061
Deposits:
Noninterest bearing	5,590,952	5,751,870
Interest bearing:
Money market and NOW accounts	5,885,093	6,178,850
Savings deposits	317,841	321,377
Time deposits	3,708,323	2,788,353
Total deposits	15,502,209	15,040,450
FHLB and FRB borrowings	1,072,000	300,000
Convertible notes, net	216,913	216,209
Subordinated debentures, net	106,258	105,354
Accrued interest payable	11,713	4,272
Acceptances outstanding	570	1,521
Operating lease liabilities	59,334	57,303
Commitments to fund investments in affordable housing partnerships	12,399	9,514
Other liabilities	126,267	61,455
Total liabilities	17,107,663	15,796,078
STOCKHOLDERS’ EQUITY:
Common stock, $0.001 par value; 150,000,000 authorized shares: issued and outstanding 136,862,088 and 119,479,253 shares, respectively, at September 30, 2022, and issued and outstanding 136,350,301 and 120,006,452 shares, respectively, at December 31, 2021	137	136
Additional paid-in capital	1,428,052	1,421,698
Retained earnings	1,048,738	932,561
Treasury stock, at cost; 17,382,835 and 16,343,849 shares at September 30, 2022 and December 31, 2021, respectively	(264,667)	(250,000)
Accumulated other comprehensive loss, net	(236,535)	(11,412)
Total stockholders’ equity	1,975,725	2,092,983
Total liabilities and stockholders’ equity	$ 19,083,388	$ 17,889,061

Consolidated Statements Of Fi_2

Consolidated Statements Of Financial Condition (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Debt Securities, Held-to-maturity, Fair Value	$ 258,677	$ 0
Allowance for credit loss	$ 160,561	$ 140,550
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)	136,862,088	136,350,301
Common stock, shares outstanding (in shares)	119,479,253	120,006,452
Treasury stock, at cost, shares repurchased (in shares)	17,382,835	16,343,849

Consolidated Statements Of Inco

Consolidated Statements Of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
INTEREST INCOME:
Interest and fees on loans	$ 175,078	$ 132,794	$ 452,774	$ 394,353
Interest on investment securities	13,498	9,207	37,462	24,835
Interest on other investments	606	865	1,642	2,175
Total interest income	189,182	142,866	491,878	421,363
INTEREST EXPENSE:
Interest on deposits	30,667	9,640	51,563	33,106
Interest Expense, FHLB and FRB borrowings	2,393	640	4,537	1,913
Interest on other borrowings and convertible notes	2,936	2,290	7,878	6,892
Total interest expense	35,996	12,570	63,978	41,911
NET INTEREST INCOME BEFORE PROVISION (CREDIT) FOR CREDIT LOSSES	153,186	130,296	427,900	379,452
PROVISION (CREDIT) FOR CREDIT LOSSES	9,200	(10,000)	1,400	(13,700)
NET INTEREST INCOME AFTER PROVISION (CREDIT) FOR CREDIT LOSSES	143,986	140,296	426,500	393,152
NONINTEREST INCOME:
Service fees on deposit accounts	2,535	1,814	6,779	5,381
International service fees	834	889	2,372	2,525
Loan servicing fees, net	981	642	2,660	2,620
Wire transfer fees	856	836	2,614	2,603
Swap fees	1,193	293	2,153	525
Net gains on sales of SBA loans	2,782	2,459	14,189	4,834
Gain (Loss) on Sale of Mortgage Loans	29	781	862	3,905
Net gains on sales of residential mortgage loans	117	0	(430)	0
Other income and fees	4,028	2,903	8,088	8,104
Total noninterest income	13,355	10,617	39,287	30,497
NONINTEREST EXPENSE:
Salaries and employee benefits	53,222	47,018	152,025	130,543
Occupancy	6,682	7,473	21,195	21,507
Furniture and equipment	4,967	4,429	14,389	13,437
Advertising and marketing	1,739	2,656	5,601	6,378
Data processing and communications	2,469	2,394	7,823	7,542
Professional fees	1,196	2,431	4,989	9,729
Investments in affordable housing partnership expenses	2,329	2,646	6,192	8,300
FDIC assessments	1,633	1,204	4,652	3,743
Credit related expenses	873	1,266	4,857	3,527
OREO expense, net	378	248	740	827
Software impairment	0	0	0	2,146
Earnings credit rebate	4,685	407	5,996	1,287
Other	3,741	3,330	11,193	10,090
Total noninterest expense	83,914	75,502	239,652	219,056
INCOME BEFORE INCOME TAXES	73,427	75,411	226,135	204,593
INCOME TAX PROVISION	19,679	19,912	59,561	51,644
NET INCOME	$ 53,748	$ 55,499	$ 166,574	$ 152,949
EARNINGS PER COMMON SHARE
Basic (in dollars per share)	$ 0.45	$ 0.45	$ 1.39	$ 1.24
Diluted (in dollars per share)	$ 0.45	$ 0.45	$ 1.38	$ 1.23

Consolidated Statements Of Comp

Consolidated Statements Of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 53,748	$ 55,499	$ 166,574	$ 152,949
Other comprehensive loss:
Change in unrealized net holding losses on securities available for sale	(112,043)	(16,433)	(308,974)	(43,050)
OCI, Debt Securities. Transferred to Held to Maturity Adjustment including Amortization of Unrealized Gains (Losses), before Tax	0	0	(36,576)	0
Change in unrealized net holding gains on interest rate swaps used in cash flow hedges	18,893	120	24,901	1,643
Reclassification adjustments for net losses realized in net income	662	88	688	227
Tax effect	27,660	4,717	94,838	11,970
Other comprehensive loss, net of tax	(64,828)	(11,508)	(225,123)	(29,210)
Total comprehensive (loss) income	$ (11,080)	$ 43,991	$ (58,549)	$ 123,739
Dividends paid (in dollars per share)	$ 0.14	$ 0.14	$ 0.42	$ 0.42

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 income (loss), net
Balance at beginning of period (in shares) at Dec. 31, 2020		123,264,864
Balance at beginning of period at Dec. 31, 2020	$ 2,053,745	$ 136	$ 1,434,916	$ 785,940	$ (200,000)	$ 32,753
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Convertible debt, cumulative effect on retained earnings before tax				10,715
Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt	(10,705)		(21,420)
AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt, tax	3,154		3,154
Issuance of shares pursuant to various stock plans, net of forfeitures and tax withholding cancellations (in shares)		420,623
Issuance of shares pursuant to various stock plans, net of forfeitures and tax withholding cancellations	0
Stock-based compensation	3,501		3,501
Cash dividends declared on common stock	(51,838)			(51,838)
Comprehensive income:
Net income	152,949			152,949
Other comprehensive income (loss)	(29,210)					(29,210)
Repurchase of treasury stock (in shares)		3,487,426
Repurchase of treasury stock	(47,198)				(47,198)
Balance at end of period (in shares) at Sep. 30, 2021		120,198,061
Balance at end of period at Sep. 30, 2021	2,074,398	$ 136	1,420,151	897,766	(247,198)	3,543
Balance at beginning of period (in shares) at Jun. 30, 2021		123,673,832
Balance at beginning of period at Jun. 30, 2021	2,092,870	$ 136	1,418,135	859,548	(200,000)	15,051
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of shares pursuant to various stock plans, net of forfeitures and tax withholding cancellations (in shares)		11,655
Issuance of shares pursuant to various stock plans, net of forfeitures and tax withholding cancellations	0
Stock-based compensation	2,016		2,016
Cash dividends declared on common stock	(17,281)			(17,281)
Comprehensive income:
Net income	55,499			55,499
Other comprehensive income (loss)	(11,508)					(11,508)
Balance at end of period (in shares) at Sep. 30, 2021		120,198,061
Balance at end of period at Sep. 30, 2021	2,074,398	$ 136	1,420,151	897,766	(247,198)	3,543
Balance at beginning of period (in shares) at Dec. 31, 2021		120,006,452
Balance at beginning of period at Dec. 31, 2021	2,092,983	$ 136	1,421,698	932,561	(250,000)	(11,412)
Balance at end of period (in shares) at Jun. 30, 2022		119,473,939
Balance at end of period at Jun. 30, 2022	2,000,369	$ 137	1,424,891	1,011,715	(264,667)	(171,707)
Balance at beginning of period (in shares) at Dec. 31, 2021		120,006,452
Balance at beginning of period at Dec. 31, 2021	2,092,983	$ 136	1,421,698	932,561	(250,000)	(11,412)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of shares pursuant to various stock plans, net of forfeitures and tax withholding cancellations (in shares)		511,787
Issuance of shares pursuant to various stock plans, net of forfeitures and tax withholding cancellations	531	$ 1	530
Stock-based compensation	5,824		5,824
Cash dividends declared on common stock	(50,397)			(50,397)
Comprehensive income:
Net income	166,574			166,574
Other comprehensive income (loss)	$ (225,123)					(225,123)
Repurchase of treasury stock (in shares)	1,038,986	1,038,986
Repurchase of treasury stock	$ (14,667)				(14,667)
Balance at end of period (in shares) at Sep. 30, 2022		119,479,253
Balance at end of period at Sep. 30, 2022	1,975,725	$ 137	1,428,052	1,048,738	(264,667)	(236,535)
Balance at beginning of period (in shares) at Jun. 30, 2022		119,473,939
Balance at beginning of period at Jun. 30, 2022	2,000,369	$ 137	1,424,891	1,011,715	(264,667)	(171,707)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of shares pursuant to various stock plans, net of forfeitures and tax withholding cancellations (in shares)		5,314
Issuance of shares pursuant to various stock plans, net of forfeitures and tax withholding cancellations	0
Stock-based compensation	3,161		3,161
Cash dividends declared on common stock	(16,725)			(16,725)
Comprehensive income:
Net income	53,748			53,748
Other comprehensive income (loss)	$ (64,828)					(64,828)
Repurchase of treasury stock (in shares)	0
Repurchase of treasury stock	$ 0
Balance at end of period (in shares) at Sep. 30, 2022		119,479,253
Balance at end of period at Sep. 30, 2022	$ 1,975,725	$ 137	$ 1,428,052	$ 1,048,738	$ (264,667)	$ (236,535)

Consolidated Statements Of Ch_2

Consolidated Statements Of Changes In Stockholders' Equity (Unaudited) (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Statement of Stockholders' Equity [Abstract]
Cash dividends declared on common stock (in dollars per share)	$ 0.14	$ 0.14	$ 0.42	$ 0.42

Consolidated Statements Of Cash

Consolidated Statements Of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 166,574	$ 152,949
Adjustments to reconcile net income to net cash from operating activities:
Discount accretion, net of depreciation and amortization	15,558	19,815
Stock-based compensation expense	9,285	6,835
Provision (credit) for credit losses	1,400	(13,700)
Provision for unfunded loan commitments	130	105
Provision for accrued interest receivables on loans	1,650	770
Valuation adjustment of OREO	415	583
Net gains on sales of SBA loans	(14,621)	(8,739)
Losses on BOLI	293	9
Net change in fair value of derivatives	98	(61)
Net losses on sale and disposal of premises and equipment	(2)	(8)
Net losses (gains) on sales of OREO	(178)	1
Net change in fair value of equity investments with readily determinable fair value	1,918	534
Losses on investments in affordable housing partnerships	7,901	8,080
Software impairment	0	2,146
Net change in deferred income taxes	(5,387)	29,988
Proceeds from sales of loans held for sale	174,791	178,520
Originations of loans held for sale	(52,415)	(150,720)
Originations of servicing assets	(4,228)	(2,039)
Net change in accrued interest receivable	(3,916)	11,558
Net change in other assets	(4,502)	4,362
Net change in accrued interest payable	7,441	(9,339)
Net change in other liabilities	64,682	(8,787)
Net cash provided by operating activities	367,247	222,876
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of interest bearing deposits in other financial institutions	0	(1,992)
Redemption of interest bearing deposits in other financial institutions	8,883	18,294
Purchase of securities	(195,796)	(993,912)
Proceeds from matured, called, or paid-down securities	277,317	552,757
Purchase of securities	(37,985)	0
Proceeds from matured, called, or paid-down securities	6,939	0
Proceeds from sale of equity investments	20,603	819
Purchase of equity investments	(196)	0
Proceeds from sales of other loans held for sale previously classified as held for investment	137,836	179,291
Purchase of loans receivable	(47,655)	(214,988)
Net change in loans receivable	(1,678,133)	(59,412)
Proceeds from sales of OREO	524	3,297
Purchase of FHLB stock	(21,378)	0
Redemption of FHLB stock	19,728	0
Purchase of premises and equipment	(6,548)	(4,753)
Proceeds from BOLI death benefits	1,215	1,847
Investments in affordable housing partnerships	(3,296)	(3,596)
Net cash used in investing activities	(1,517,942)	(522,348)
CASH FLOWS FROM FINANCING ACTIVITIES
Net change in deposits	461,759	728,615
Proceeds from FHLB advances	23,650,885	1,540,000
Repayment of FHLB advances	(23,250,885)	(1,590,000)
Proceeds from FRB borrowings	7,647,000	0
Repayment of FRB borrowings	(7,275,000)	0
Purchase of treasury stock	(14,667)	(47,198)
Cash dividends paid on common stock	(50,397)	(51,838)
Taxes paid in net settlement of restricted stock	(3,461)	(3,334)
Issuance of additional stock pursuant to various stock plans	531	0
Net cash provided by financing activities	1,165,765	576,245
NET CHANGE IN CASH AND CASH EQUIVALENTS	15,070	276,773
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	316,266	350,579
CASH AND CASH EQUIVALENTS, END OF PERIOD	331,336	627,352
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION
Interest paid	54,929	49,667
Income taxes paid	70,475	43,149
SUPPLEMENTAL DISCLOSURES OF NON-CASH ACTIVITIES
Transfer from loans receivable to loans held for sale	219,287	374,034
Transfer from loans held for sale to loans receivable	8,324	3,404
Transfer from investment securities available for sale to held to maturity, at fair value	238,966	0
Lease liabilities arising from obtaining right-of-use assets	$ 13,698	$ 965

Hope Bancorp, Inc.

Hope Bancorp, Inc.	9 Months Ended
	Sep. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Hope Bancorp, Inc.	Hope Bancorp, Inc. Hope Bancorp, Inc. (“Hope Bancorp” on a parent-only basis and the “Company” on a consolidated basis), headquartered in Los Angeles, California, is the holding company for Bank of Hope (the “Bank”). As of September 30, 2022, the Bank operated branches in California, New York/New Jersey, Illinois, Washington, Texas, Virginia, Alabama and Georgia

Basis of Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2022
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, 2021 which was from the audited financial statements included in the Company’s 2021 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 September 30, 2022 and December 31, 2021 and the results of operations for the three and nine months ended September 30, 2022 and 2021. Certain reclassifications have been made to prior period amounts to conform to the current year presentation. The results of operations for the interim periods are not necessarily indicative of results to be anticipated for the full year. The preparation of consolidated financial statements in conformity with U.S. generally accepted accounting principles (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ significantly from those estimates. These unaudited consolidated financial statements should be read along with the audited consolidated financial statements and accompanying notes included in the Company’s 2021 Annual Report on Form 10-K. Pending Accounting Pronouncements

Earnings Per Share ("EPS")

Earnings Per Share ("EPS")	9 Months Ended
	Sep. 30, 2022
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, employee stock purchase program (“ESPP”) shares, or other contracts to issue common stock were exercised or converted to common stock that would then share in earnings. For the three months ended September 30, 2022 and 2021, stock options and restricted share awards of 751,973 and 934,036 shares of common stock, respectively, were excluded in computing diluted earnings per common share because they were anti-dilutive. For the nine months ended September 30, 2022 and 2021, stock options and restricted share awards of 715,058 and 743,553 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). With the adoption of ASU 2020-06, the if-converted method is required for calculating dilutive EPS for all convertible instruments since the treasury stock method is no longer available. Under the if-converted method, the denominator of the diluted EPS calculation is adjusted to reflect the full number of common shares issuable upon conversion, while the numerator is adjusted to add back after-tax interest expense for the period. For the three and nine months ended September 30, 2022 and 2021, 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 based on the Company’s common stock price during the three and nine months ended September 30, 2022 and 2021 as the conversion price exceeded the market price of the Company’s stock. The following tables show the computation of basic and diluted EPS for the three and nine months ended September 30, 2022 and 2021. Three Months Ended September 30, 2022 2021 Net Income Weighted-Average Shares Earnings Net Income Weighted-Average Shares Earnings (Dollars in thousands, except share and per share data) Basic EPS - common stock $ 53,748 119,476,035 $ 0.45 $ 55,499 122,244,948 $ 0.45 Effect of dilutive securities: Stock options, restricted stock, and ESPP shares 520,488 663,588 Diluted EPS - common stock $ 53,748 119,996,523 $ 0.45 $ 55,499 122,908,536 $ 0.45 Nine Months Ended September 30, 2022 2021 Net Income Weighted-Average Shares Earnings Net Income Weighted-Average Shares Earnings (Dollars in thousands, except share and per share data) Basic EPS - common stock $ 166,574 119,940,044 $ 1.39 $ 152,949 123,050,174 $ 1.24 Effect of dilutive securities: Stock options, restricted stock, and ESPP shares 655,944 798,338 Diluted EPS - common stock $ 166,574 120,595,988 $ 1.38 $ 152,949 123,848,512 $ 1.23

Equity Investments

Equity Investments	9 Months Ended
	Sep. 30, 2022
Investments, Debt and Equity Securities [Abstract]
Equity Investments	Equity Investments Equity investments with readily determinable fair values at September 30, 2022 and December 31, 2021, consisted of mutual funds in the amounts of $4.3 million and $26.8 million, respectively, and were included in “Equity investments” on the Consolidated Statements of Financial Condition. The changes in fair value for equity investments with readily determinable fair values for the three and nine months ended September 30, 2022 and 2021 were recorded in other noninterest income and fees as summarized in the table below: Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 (Dollars in thousands) Net change in fair value recorded during the period on equity investments with readily determinable fair value $ 186 $ (127) $ (1,926) $ (534) Less: Net change in fair value recorded on equity investments sold during the period 375 — (1,354) — Net change in fair value on equity investments with readily determinable fair values held at the end of the period $ (189) $ (127) $ (572) $ (534) The decline in fair value of the Company’s equity investments with readily determinable fair values was due to the recent increases in market interest rates over the yield available at the time the equity investments were purchased. For the three and nine months ended September 30, 2022, the Company received proceeds of $20.6 million from the sale of equity investments with readily determinable fair values and recognized a net realized gain of $375 thousand. At September 30, 2022 and December 31, 2021, the Company also had equity investments without readily determinable fair values which are carried at cost less any determined impairment. The balance of these investments is adjusted for changes in subsequent observable prices. At September 30, 2022, the total balance of equity investments without readily determinable fair values included in “Equity investments” on the Consolidated Statements of Financial Condition was $38.0 million, consisting of $370 thousand in correspondent bank stock, $1.0 million in Community Development Financial Institutions (“CDFI”) investments, and $36.7 million in Community Reinvestment Act (“CRA”) investments. At December 31, 2021, the total balance of equity investments without readily determinable fair values was $31.0 million, consisting of $370 thousand in correspondent bank stock, $1.0 million in CDFI investments, and $29.7 million in CRA investments.

Securities Available for Sale

Securities Available for Sale	9 Months Ended
	Sep. 30, 2022
Debt Securities, Available-for-Sale [Abstract]
Securities Available for Sale	Investment Securities The following is a summary of investment securities as of the dates indicated: September 30, 2022 Amortized Gross Gross Fair (Dollars in thousands) Debt securities available for sale: U.S. Treasury securities $ 3,988 $ — $ (99) $ 3,889 U.S. Government agency and U.S. Government sponsored enterprises: Agency securities 4,000 — (125) 3,875 Collateralized mortgage obligations 974,052 9 (149,734) 824,327 Mortgage-backed securities: Residential 555,997 — (99,407) 456,590 Commercial 426,483 — (46,868) 379,615 Asset-backed securities 153,548 — (9,645) 143,903 Corporate securities 23,362 — (4,647) 18,715 Municipal securities 180,265 — (17,831) 162,434 Total investment securities available for sale $ 2,321,695 $ 9 $ (328,356) $ 1,993,348 Amortized Gross Gross Fair (Dollars in thousands) Debt securities held to maturity: U.S. Government agency and U.S. Government sponsored enterprises: Mortgage-backed securities: Residential $ 159,538 $ — $ (7,840) $ 151,698 Commercial 111,647 — (4,668) 106,979 Total investment securities held to maturity $ 271,185 $ — $ (12,508) $ 258,677 December 31, 2021 Amortized Gross Gross Fair (Dollars in thousands) Debt securities available for sale: U.S. Government agency and U.S. Government sponsored enterprises: Collateralized mortgage obligations $ 1,039,543 $ 3,357 $ (16,470) $ 1,026,430 Mortgage-backed securities: Residential 769,113 1,985 (11,874) 759,224 Commercial 595,659 9,103 (5,360) 599,402 Asset-backed securities 153,564 11 (124) 153,451 Corporate securities 23,398 130 (1,044) 22,484 Municipal securities 104,371 1,680 (767) 105,284 Total investment securities available for sale $ 2,685,648 $ 16,266 $ (35,639) $ 2,666,275 During the second quarter of 2022, the Company transferred $238.9 million in fair value of debt securities from available for sale (“AFS”) to held to maturity (“HTM”). The transferred securities had an amortized cost of $275.5 million with a pre-tax net unrealized loss of $36.6 million, which was recorded as a discount subsequent to the transfer and will be amortized as an adjustment of yield. The unrealized holding loss at the date of transfer will continue to be reported, net of taxes, in accumulated other comprehensive income (“AOCI”) as a component of stockholders’ equity, and will be amortized over the remaining life of the securities as an adjustment of yield, offsetting the impact on yield of the corresponding discount amortization. The Company has the ability and intent to hold these securities to maturity. At the time of transfer, there was no previously recorded allowance for credit losses on investment securities AFS transferred to HTM. The Company has elected to exclude accrued interest from the amortized cost of its investment debt securities. Accrued interest receivable for investment debt securities at September 30, 2022 and December 31, 2021 totaled $6.5 million and $5.6 million, respectively. As of September 30, 2022 and December 31, 2021, there were no holdings of securities of any one issuer, other than the U.S. Government and its agencies, in an amount greater than 10% of stockholders’ equity. At September 30, 2022 and December 31, 2021, $230.8 million and $13.0 million in unrealized losses on investment securities AFS, net of taxes, respectively, were included in accumulated other comprehensive income (loss). For the three and nine months ended September 30, 2022 and 2021, there were no reclassifications out of accumulated other comprehensive income (loss) into earnings resulting from the sale of investments securities AFS. The following table presents a breakdown of interest income recorded for investment securities that are taxable and nontaxable. Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 (Dollars in thousands) Interest income on investment securities Taxable $ 12,907 $ 9,025 $ 36,303 $ 24,182 Nontaxable 591 182 1,159 653 Total $ 13,498 $ 9,207 $ 37,462 $ 24,835 The amortized cost and estimated fair value of investment securities at September 30, 2022, by contractual maturity, are presented in the table below. Collateralized mortgage obligations, mortgage-backed securities, and asset-backed securities are presented by final maturity. 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. Available for Sale Held to Maturity Amortized Estimated Amortized Estimated (Dollars in thousands) Debt securities: Due within one year $ 2,616 $ 2,565 $ — $ — Due after one year through five years 102,687 95,593 — — Due after five years through ten years 159,709 143,728 36,906 35,677 Due after ten years 2,056,683 1,751,462 234,279 223,000 Total $ 2,321,695 $ 1,993,348 $ 271,185 $ 258,677 Securities with carrying values of approximately $369.5 million and $362.2 million at September 30, 2022 and December 31, 2021, 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. The length of time that the individual securities have been in a continuous unrealized loss position is not a factor in determining credit impairment with the adoption of current expected credit losses (“CECL”). September 30, 2022 Less than 12 months 12 months or longer Total Description of Number Fair Gross Number Fair Gross Number Fair Gross (Dollars in thousands) U.S. Treasury securities 1 $ 3,889 $ (99) — $ — $ — 1 $ 3,889 $ (99) Agency securities* 1 3,875 (125) — — — 1 3,875 (125) Collateralized mortgage obligations* 87 213,800 (23,090) 36 605,594 (126,644) 123 819,394 (149,734) Mortgage-backed securities: Residential* 31 102,932 (16,266) 34 353,658 (83,141) 65 456,590 (99,407) Commercial* 42 259,911 (23,430) 13 119,704 (23,438) 55 379,615 (46,868) Asset-backed securities 9 71,998 (4,759) 9 71,905 (4,886) 18 143,903 (9,645) Corporate securities 1 3,533 (467) 5 15,182 (4,180) 6 18,715 (4,647) Municipal securities 61 131,751 (13,514) 13 30,683 (4,317) 74 162,434 (17,831) Total 233 $ 791,689 $ (81,750) 110 $ 1,196,726 $ (246,606) 343 $ 1,988,415 $ (328,356) December 31, 2021 Less than 12 months 12 months or longer Total Description of Number Fair Gross Number Fair Gross Number Fair Gross (Dollars in thousands) Collateralized mortgage obligations* 39 $ 757,799 $ (15,445) 2 $ 37,438 $ (1,025) 41 $ 795,237 $ (16,470) Mortgage-backed securities: Residential* 49 603,372 (9,371) 13 75,211 (2,503) 62 678,583 (11,874) Commercial* 24 214,384 (3,339) 4 57,656 (2,021) 28 272,040 (5,360) Asset-backed securities 13 115,885 (124) — — — 13 115,885 (124) Corporate securities 4 14,067 (331) 1 4,288 (713) 5 18,355 (1,044) Municipal securities 23 59,403 (767) — — — 23 59,403 (767) Total 152 $ 1,764,910 $ (29,377) 20 $ 174,593 $ (6,262) 172 $ 1,939,503 $ (35,639) __________________________________ * Investments in U.S. Government agency and U.S. Government sponsored enterprises The Company had collateralized mortgage obligations, mortgage-backed, asset-backed, corporate, and municipal securities classified as AFS that were in a continuous loss position for twelve months or longer at September 30, 2022. The collateralized mortgage obligations and mortgage-backed securities were investments in U.S. Government agency and U.S. Government sponsored enterprises and have high credit ratings (“AA” grade or better). The interest on other securities that were in an unrealized loss position have been paid as agreed, and the Company believes this will continue in the future and that the securities will be paid in full as scheduled. 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 any unrealized losses, 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. Allowance for Credit Losses on Securities Available for Sale— The Company evaluates investment securities AFS in unrealized loss positions for impairment related to credit losses on at least a quarterly basis. Investment securities AFS in unrealized loss positions are first assessed as to whether the Company intends to sell, or if it is more likely than not that the Company 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, the Company compares the present value of cash flows expected to be collected from the security with the amortized cost basis. 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. Unrealized losses that have not been recorded through an allowance for credit losses is recognized in other comprehensive income, net of applicable taxes. The Company did not have an allowance for credit losses on investment securities AFS as of September 30, 2022 and December 31, 2021. Approximately 85% of the Company’s investment portfolio at September 30, 2022 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 is subject to a cap as part of the agreement entered into in 2008. Nonetheless, at this time the Company does 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. In addition, the Company had one U.S. Treasury note issued and guaranteed by the U.S. government. Therefore, the Company concluded that a zero allowance approach for these investments was appropriate. The Company also had 18 asset-backed securities, six corporate securities, and 74 municipal bonds in unrealized loss positions at September 30, 2022. The Company performed an assessment of investments in unrealized loss positions for credit impairment and concluded that no allowance for credit losses was required at September 30, 2022.

Loans Receivable and Allowance

Loans Receivable and Allowance for Credit Losses	9 Months Ended
	Sep. 30, 2022
Receivables [Abstract]
Loans Receivable and Allowance for Credit Losses	Loans Receivable and Allowance for Credit Losses The following is a summary of loans receivable by major category: September 30, 2022 December 31, 2021 (Dollars in thousands) Loan portfolio composition Real estate loans: Residential $ 75,488 $ 69,199 Commercial 9,216,194 8,816,080 Construction 213,211 220,652 Total real estate loans 9,504,893 9,105,931 Commercial business * 5,124,421 4,208,674 Residential mortgage 823,809 579,626 Consumer and other 38,064 58,512 Loans receivable 15,491,187 13,952,743 Allowance for credit losses (160,561) (140,550) Loans receivable, net of allowance for credit losses $ 15,330,626 $ 13,812,193 __________________________________ * Commercial business loans as of September 30, 2022 and December 31, 2021 include $5.9 million and $228.1 million, respectively, in SBA Paycheck Protection Program loans Loans receivable is stated at the amount of unpaid principal, adjusted for net deferred fees and costs, premiums and discounts, and purchase accounting fair value adjustments. The Company had net deferred fees of $9.3 million and $6.2 million at September 30, 2022 and December 31, 2021, respectively. Net loan fees related to SBA Paycheck Protection Program (“PPP”) loans totaled $130 thousand at September 30, 2022 compared to $6.7 million at December 31, 2021 and included fees from the origination of SBA PPP loans net of deferred origination costs. The loan portfolio consists of four segments: real estate, commercial business, residential mortgage, and consumer and other loans. 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 and also includes warehouse lines of credit and SBA PPP loans. 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 card, and other personal loans. Loans receivable increased $1.54 billion from December 31, 2021 to $15.49 billion as of September 30, 2022. The increase in loans receivable during the nine months ended September 30, 2022 was due to an increase in all loan types apart from consumer and other loans. Record loan originations in 2022 contributed to the growth of the Company’s loan portfolio as of September 30, 2022 compared to December 31, 2021. The Company had $42.0 million in loans held for sale as of September 30, 2022 compared to $99.0 million at December 31, 2021. Loans held for sale at September 30, 2022 consisted of $41.1 million in SBA guaranteed loans and $900 thousand in residential mortgage loans. The tables below detail the activity in the allowance for credit losses (“ACL”) by portfolio segment for the three and nine months ended September 30, 2022 and 2021. Recoveries for the nine months ended September 30, 2022 included $17.3 million in recoveries from a single lending relationship that had $29.6 million in charge-offs in the third quarter of 2021. Real Estate Commercial Business Residential Mortgage Consumer and Other Total (Dollars in thousands) Three Months Ended September 30, 2022 Balance, beginning of period $ 99,824 $ 44,852 $ 6,079 $ 825 $ 151,580 Provision (credit) for credit losses 109 8,276 837 (22) 9,200 Loans charged off (185) (262) (22) (81) (550) Recoveries of charge offs 176 147 — 8 331 Balance, end of period $ 99,924 $ 53,013 $ 6,894 $ 730 $ 160,561 Nine Months Ended September 30, 2022 Balance, beginning of period $ 108,440 $ 27,811 $ 3,316 $ 983 $ 140,550 Provision (credit) for credit losses (25,433) 23,327 3,600 (94) 1,400 Loans charged off (1,936) (611) (22) (196) (2,765) Recoveries of charge offs 18,853 2,486 — 37 21,376 Balance, end of period $ 99,924 $ 53,013 $ 6,894 $ 730 $ 160,561 Real Estate Commercial Business Residential Mortgage Consumer and Other Total (Dollars in thousands) Three Months Ended September 30, 2021 Balance, beginning of period $ 155,253 $ 29,500 $ 3,612 $ 1,087 $ 189,452 Provision (credit) for credit losses (9,142) (1,011) — 153 (10,000) Loans charged off (41,655) (1,895) (923) (110) (44,583) Recoveries of charge offs 1,113 778 — 14 1,905 Balance, end of period $ 105,569 $ 27,372 $ 2,689 $ 1,144 $ 136,774 Nine Months Ended September 30, 2021 Balance, beginning of period $ 162,196 $ 39,155 $ 4,227 $ 1,163 $ 206,741 Provision (credit) for credit losses (2,570) (10,565) (615) 50 (13,700) Loans charged off (56,645) (3,077) (923) (251) (60,896) Recoveries of charge offs 2,588 1,859 — 182 4,629 Balance, end of period $ 105,569 $ 27,372 $ 2,689 $ 1,144 $ 136,774 The following tables break out the allowance for credit losses and loan balance by measurement methodology at September 30, 2022 and December 31, 2021: September 30, 2022 Real Estate Commercial Business Residential Mortgage Consumer and Other Total (Dollars in thousands) Allowance for credit losses: Individually evaluated $ 2,956 $ 4,207 $ 15 $ 21 $ 7,199 Collectively evaluated 96,968 48,806 6,879 709 153,362 Total $ 99,924 $ 53,013 $ 6,894 $ 730 $ 160,561 Loans outstanding: Individually evaluated $ 62,936 $ 17,553 $ 8,731 $ 429 $ 89,649 Collectively evaluated 9,441,957 5,106,868 815,078 37,635 15,401,538 Total $ 9,504,893 $ 5,124,421 $ 823,809 $ 38,064 $ 15,491,187 December 31, 2021 Real Estate Commercial Business Residential Mortgage Consumer and Other Total (Dollars in thousands) Allowance for credit losses: Individually evaluated $ 2,025 $ 3,056 $ 11 $ 23 $ 5,115 Collectively evaluated 106,415 24,755 3,305 960 135,435 Total $ 108,440 $ 27,811 $ 3,316 $ 983 $ 140,550 Loans outstanding: Individually evaluated $ 83,347 $ 19,407 $ 3,470 $ 409 $ 106,633 Collectively evaluated 9,022,584 4,189,267 576,156 58,103 13,846,110 Total $ 9,105,931 $ 4,208,674 $ 579,626 $ 58,512 $ 13,952,743 As of September 30, 2022 and December 31, 2021, reserves for unfunded loan commitments recorded in other liabilities were $1.2 million and $1.1 million, respectively. For the three months ended September 30, 2022, the Company recorded a credit for unfunded commitments in credit related expenses totaling $250 thousand and recorded for the nine months ended September 30, 2022, additions to reserves for unfunded commitments totaling $130 thousand. For the three and nine months ended September 30, 2021, the Company recorded additions to reserves for unfunded commitments totaling $0 and $105 thousand, respectively. 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 conditions have 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 represent the amortized cost 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 a recorded ACL and those without a recorded ACL as of September 30, 2022 and December 31, 2021. September 30, 2022 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 20,546 4,687 25,233 — Hotel & motel 5,815 4,062 9,877 4,618 Gas station & car wash 2,847 1,011 3,858 — Mixed use 781 3,258 4,039 — Industrial & warehouse 129 919 1,048 — Other 1,830 1,922 3,752 — Real estate – construction — — — — Commercial business 1,625 6,050 7,675 419 Residential mortgage 5,967 2,764 8,731 — Consumer and other — 358 358 269 Total $ 39,540 $ 25,031 $ 64,571 $ 5,306 December 31, 2021 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 7,586 2,604 10,190 — Hotel & motel 5,471 6,564 12,035 — Gas station & car wash 575 1,267 1,842 — Mixed use 5,307 1,412 6,719 — Industrial & warehouse 687 1,897 2,584 — Other 1,233 5,153 6,386 215 Real estate – construction — — — — Commercial business 4,726 6,299 11,025 1,494 Residential mortgage 275 3,195 3,470 — Consumer and other — 365 365 422 Total $ 25,860 $ 28,756 $ 54,616 $ 2,131 __________________________________ (1) Total nonaccrual loans exclude the guaranteed portion of SBA loans that are in liquidation totaling $9.9 million and $19.5 million, at September 30, 2022 and December 31, 2021, respectively. The following table presents the amortized cost of collateral dependent loans as of September 30, 2022 and December 31, 2021: September 30, 2022 December 31, 2021 Real Estate Collateral Other Collateral Total Real Estate Collateral Other Collateral Total (Dollars in thousands) Real estate – residential $ — $ — $ — $ — $ — $ — Real estate – commercial 47,272 — 47,272 65,590 — 65,590 Real estate – construction — — — — — — Commercial business 1,626 5,795 7,421 1,767 6,615 8,382 Residential mortgage 5,967 — 5,967 — — — Consumer and other — — — — — — Total $ 54,865 $ 5,795 $ 60,660 $ 67,357 $ 6,615 $ 73,972 Collateral on loans is a significant portion of what secures collateral dependent loans and significant changes to the fair value of the collateral can potentially impact ACL. During the nine months ended September 30, 2022, the Company did not have any significant changes to the extent to which collateral secures its collateral dependent loans due to general deterioration or from other factors. Accrued interest receivables on loans totaled $35.7 million at September 30, 2022 and $36.2 million at December 31, 2021. With the adoption of CECL, the Company elected not to consider accrued interest receivable in its estimates of expected credit losses because the Company writes off uncollectible accrued interest receivable in a timely manner. The Company considers writing off accrued interest amounts once the amounts become 90 days past due to be considered within a timely manner. The Company has elected to write off accrued interest receivables by reversing interest income. The following table presents interest income reversals, due to loans being placed on nonaccrual status, by loan segment for the three and nine months ended September 30, 2022 and 2021: Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 (Dollars in thousands) Real estate $ 154 $ 1,071 $ 1,406 $ 2,761 Commercial business 21 12 47 49 Residential mortgage 153 — 292 (4) Consumer and other — — — — Total $ 328 $ 1,083 $ 1,745 $ 2,806 The following table presents the amortized cost of past due loans, including nonaccrual loans past due 30 or more days, by the number of days past due as of September 30, 2022 and December 31, 2021 by class of loans: September 30, 2022 December 31, 2021 30-59 Days 60-89 Days 90 or More Days Total 30-59 Days 60-89 Days 90 or More Days Total (Dollars in thousands) Real estate – residential $ — $ — $ — $ — $ — $ — $ — $ — Real estate – commercial Retail 5,086 — 5,412 10,498 1,250 927 9,167 11,344 Hotel & motel 222 4,708 8,456 13,386 9,320 4,148 4,760 18,228 Gas station & car wash — — 1,093 1,093 575 — 832 1,407 Mixed use — — 3,659 3,659 1,124 — 5,625 6,749 Industrial & warehouse 32 86 408 526 247 — 785 1,032 Other — 236 2,021 2,257 1,198 6,522 3,185 10,905 Real estate – construction — — — — — — — — Commercial business 6,070 958 3,132 10,160 1,792 2,362 6,482 10,636 Residential mortgage 1,764 241 4,795 6,800 14,177 — 3,099 17,276 Consumer and other 273 46 627 946 59 21 787 867 Total Past Due $ 13,447 $ 6,275 $ 29,603 $ 49,325 $ 29,742 $ 13,980 $ 34,722 $ 78,444 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 table presents the amortized cost basis of loans receivable by class, credit quality indicator, and year of origination as of September 30, 2022 and December 31, 2021. September 30, 2022 Term Loan by Origination Year Revolving Loans Total 2022 2021 2020 2019 2018 Prior (Dollars in thousands) Real Estate - Residential Pass / not rated $ 14,306 $ 25,324 $ 9,743 $ 9,085 $ 3,990 $ 7,146 $ 4,670 $ 74,264 Special mention — — — — — — — — Substandard — — — — 662 562 — 1,224 Doubtful / loss — — — — — — — — Subtotal $ 14,306 $ 25,324 $ 9,743 $ 9,085 $ 4,652 $ 7,708 $ 4,670 $ 75,488 Real Estate - Commercial Pass / not rated $ 2,083,073 $ 2,195,049 $ 1,328,885 $ 1,055,329 $ 1,039,822 $ 1,272,491 $ 93,323 $ 9,067,972 Special mention — 11,640 1,714 — 4,529 3,871 202 21,956 Substandard 1,017 8,716 2,737 19,041 21,684 72,794 277 126,266 Doubtful / loss — — — — — — — — Subtotal $ 2,084,090 $ 2,215,405 $ 1,333,336 $ 1,074,370 $ 1,066,035 $ 1,349,156 $ 93,802 $ 9,216,194 Real Estate - Construction Pass / not rated $ 1,435 $ 38,964 $ 62,814 $ 35,424 $ 8,053 $ 4,607 $ 89 $ 151,386 Special mention — — — — — 16,144 — 16,144 Substandard 45,681 — — — — — — 45,681 Doubtful / loss — — — — — — — — Subtotal $ 47,116 $ 38,964 $ 62,814 $ 35,424 $ 8,053 $ 20,751 $ 89 $ 213,211 Commercial Business Pass / not rated $ 1,920,005 $ 1,214,335 $ 327,471 $ 351,613 $ 74,395 $ 103,832 $ 1,069,033 $ 5,060,684 Special mention — 20,390 13,621 119 2,099 485 4,585 41,299 Substandard 252 3,214 6,324 2,229 1,206 5,268 3,945 22,438 Doubtful / loss — — — — — — — — Subtotal $ 1,920,257 $ 1,237,939 $ 347,416 $ 353,961 $ 77,700 $ 109,585 $ 1,077,563 $ 5,124,421 Residential Mortgage Pass / not rated $ 346,195 $ 289,014 $ 1,395 $ 34,293 $ 65,713 $ 78,468 $ — $ 815,078 Special mention — — — — — — — — Substandard — — — 107 387 8,237 — 8,731 Doubtful / loss — — — — — — — — Subtotal $ 346,195 $ 289,014 $ 1,395 $ 34,400 $ 66,100 $ 86,705 $ — $ 823,809 Consumer and Other Pass / not rated $ 2,837 $ 1,047 $ 3,816 $ 1,355 $ 1,185 $ 7,026 $ 20,425 $ 37,691 Special mention — — — — — — — — Substandard — — — — — 373 — 373 Doubtful / loss — — — — — — — — Subtotal $ 2,837 $ 1,047 $ 3,816 $ 1,355 $ 1,185 $ 7,399 $ 20,425 $ 38,064 Total Loans Pass / not rated $ 4,367,851 $ 3,763,733 $ 1,734,124 $ 1,487,099 $ 1,193,158 $ 1,473,570 $ 1,187,540 $ 15,207,075 Special mention — 32,030 15,335 119 6,628 20,500 4,787 79,399 Substandard 46,950 11,930 9,061 21,377 23,939 87,234 4,222 204,713 Doubtful / loss — — — — — — — — Total $ 4,414,801 $ 3,807,693 $ 1,758,520 $ 1,508,595 $ 1,223,725 $ 1,581,304 $ 1,196,549 $ 15,491,187 December 31, 2021 Term Loan by Origination Year Revolving Loans Total 2021 2020 2019 2018 2017 Prior (Dollars in thousands) Real Estate - Residential Pass / not rated $ 26,093 $ 10,471 $ 11,442 $ 4,952 $ 2,987 $ 7,260 $ 4,403 $ 67,608 Special mention — — — 534 — 924 — 1,458 Substandard — — — 133 — — — 133 Doubtful / loss — — — — — — — — Subtotal $ 26,093 $ 10,471 $ 11,442 $ 5,619 $ 2,987 $ 8,184 $ 4,403 $ 69,199 Real Estate - Commercial Pass / not rated $ 2,451,662 $ 1,415,909 $ 1,252,851 $ 1,238,425 $ 883,790 $ 1,086,182 $ 89,501 $ 8,418,320 Special mention 5,553 8,882 39,567 20,203 27,204 73,090 5,970 180,469 Substandard 7,436 7,718 17,533 25,330 53,000 105,995 279 217,291 Doubtful / loss — — — — — — — — Subtotal $ 2,464,651 $ 1,432,509 $ 1,309,951 $ 1,283,958 $ 963,994 $ 1,265,267 $ 95,750 $ 8,816,080 Real Estate - Construction Pass / not rated $ 16,545 $ 67,628 $ 32,044 $ 32,908 $ 8,292 $ 5,685 $ 89 $ 163,191 Special mention — — — 45,996 5,074 6,391 — 57,461 Substandard — — — — — — — — Doubtful / loss — — — — — — — — Subtotal $ 16,545 $ 67,628 $ 32,044 $ 78,904 $ 13,366 $ 12,076 $ 89 $ 220,652 Commercial Business Pass / not rated $ 1,755,104 $ 431,145 $ 461,460 $ 98,812 $ 53,629 $ 70,294 $ 1,299,372 $ 4,169,816 Special mention 1,379 523 4,780 2,897 550 5,083 2,594 17,806 Substandard 3,796 941 2,308 1,651 3,803 3,461 5,092 21,052 Doubtful / loss — — — — — — — — Subtotal $ 1,760,279 $ 432,609 $ 468,548 $ 103,360 $ 57,982 $ 78,838 $ 1,307,058 $ 4,208,674 Residential Mortgage Pass / not rated $ 282,191 $ 1,420 $ 40,377 $ 112,743 $ 85,446 $ 53,979 $ — $ 576,156 Special mention — — — — — — — — Substandard 275 — 128 394 541 2,132 — 3,470 Doubtful / loss — — — — — — — — Subtotal $ 282,466 $ 1,420 $ 40,505 $ 113,137 $ 85,987 $ 56,111 $ — $ 579,626 Consumer and Other Pass / not rated $ 19,203 $ 5,347 $ 1,783 $ 1,699 $ 1,769 $ 6,165 $ 22,095 $ 58,061 Special mention — — — — — — — — Substandard — — — — — 451 — 451 Doubtful / loss — — — — — — — — Subtotal $ 19,203 $ 5,347 $ 1,783 $ 1,699 $ 1,769 $ 6,616 $ 22,095 $ 58,512 Total Loans Pass / not rated $ 4,550,798 $ 1,931,920 $ 1,799,957 $ 1,489,539 $ 1,035,913 $ 1,229,565 $ 1,415,460 $ 13,453,152 Special mention 6,932 9,405 44,347 69,630 32,828 85,488 8,564 257,194 Substandard 11,507 8,659 19,969 27,508 57,344 112,039 5,371 242,397 Doubtful / loss — — — — — — — — Total $ 4,569,237 $ 1,949,984 $ 1,864,273 $ 1,586,677 $ 1,126,085 $ 1,427,092 $ 1,429,395 $ 13,952,743 For the three and nine months ended September 30, 2022 and the twelve months ended December 31, 2021, there were no revolving loans converted to term loans. 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 and nine months ended September 30, 2022 and 2021 is presented in the following table: Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 Transfer of loans held for investment to held for sale (Dollars in thousands) Real estate - commercial $ 36,704 $ 107,191 $ 192,190 $ 278,366 Commercial business 10,328 78,990 27,097 88,650 Residential mortgage — 7,018 — 7,018 Total $ 47,032 $ 193,199 $ 219,287 $ 374,034 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 for credit losses on an individual basis. The Company differentiates its loan segments based on shared risk characteristics for which allowance for credit losses is measured on a collective basis. Risk Characteristics Real estate Property type, location, owner occupied status Commercial business Delinquency status, risk rating, industry type Residential mortgage FICO score, LTV, delinquency status, maturity date, collateral value, location Consumer and other Historical losses 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. Included in the quantitative portion of the analysis of the allowance for credit losses are key inputs including borrowers’ net operating income, debt coverage ratios, real estate collateral values, as well as key inputs that are more subjective or require management’s judgement including key macroeconomic variables from Moody’s forecast scenarios including GDP, unemployment rates, interest rates, and commercial real estate prices. These key inputs are utilized in the Company’s models to develop PD and LGD assumptions used in the calculation of estimated quantitative losses. The ACL for the Company’s construction, credit card, and certain consumer loans is calculated based on a non-modeled approach utilizing historical loss rates 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 2% of the Company’s total loan portfolio as of September 30, 2022. The Company’s Economic Forecast Committee (“EFC”) reviews 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. As of September 30, 2022, the Company utilized the Consensus economic forecast scenario from Moody’s as it best aligned with management’s expectations of future forecasts. The Company also utilized Moody’s Consensus economic forecast for the calculation of the December 31, 2021 ACL. The Consensus economic forecast projects that GDP growth will decline to less than 1.0% in 2023 then grow to over 2.0% by the end of 2024 with unemployment rising to the peak of 4.0% in 2023 and 2024. Commercial real estate prices in the Consensus scenario is expected to see a substantial reduction with the commercial real estate price index declining to -0.4% for 2023 before increasing to 4.5% for 2024. 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 similar risk characteristics such as nonaccrual and TDR loans above $1.0 million, the Company evaluates these loans on an individual basis in accordance with ASC 326. These nonaccrual and TDR loans are considered to have different risk profiles than performing loans and therefore are evaluated separately. The Company decided to collectively assess TDRs and nonaccrual loans with balances below $1.0 million 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 individually assessed loans, the ACL is measured using either 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, the Company 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, the Company 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 of 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 an estimated funding rate to allocate an allowance to undrawn exposures. This funding rate is used as a credit conversion factor to capture how much undrawn lines of credit can potentially become drawn at any point. The 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 tables present a breakdown of loans by recorded ACL, broken out by loans evaluated individually and collectively at September 30, 2022 and December 31, 2021: September 30, 2022 Real Estate – Real Estate – Real Estate – Commercial Residential Consumer Total (Dollars in thousands) Individually evaluated loans $ — $ 62,936 $ — $ 17,553 $ 8,731 $ 429 $ 89,649 ACL on individually evaluated loans $ — $ 2,956 $ — $ 4,207 $ 15 $ 21 $ 7,199 Individually evaluated loans ACL coverage N/A 4.70 % N/A 23.97 % 0.17 % 4.90 % 8.03 % Collectively evaluated loans $ 75,488 $ 9,153,258 $ 213,211 $ 5,106,868 $ 815,078 $ 37,635 $ 15,401,538 ACL on collectively evaluated loans $ 850 $ 94,579 $ 1,539 $ 48,806 $ 6,879 $ 709 $ 153,362 Collectively evaluated loans ACL coverage 1.13 % 1.03 % 0.72 % 0.96 % 0.84 % 1.88 % 1.00 % Total loans $ 75,488 $ 9,216,194 $ 213,211 $ 5,124,421 $ 823,809 $ 38,064 $ 15,491,187 Total ACL $ 850 $ 97,535 $ 1,539 $ 53,013 $ 6,894 $ 730 $ 160,561 Total ACL to total loans 1.13 % 1.06 % 0.72 % 1.03 % 0.84 % 1.92 % 1.04 % December 31, 2021 Real Estate – Real Estate – Real Estate – Commercial Residential Consumer Total (Dollars in thousands) Individually evaluated loans $ — $ 83,347 $ — $ 19,407 $ 3,470 $ 409 $ 106,633 ACL on individually evaluated loans $ — $ 2,025 $ — $ 3,056 $ 11 $ 23 $ 5,115 Individually evaluated loans ACL coverage N/A 2.43 % N/A 15.75 % 0.32 % 5.62 % 4.80 % Collectively evaluated loans $ 69,199 $ 8,732,733 $ 220,652 $ 4,189,267 $ 576,156 $ 58,103 $ 13,846,110 ACL on collectively evaluated loans $ 729 $ 104,145 $ 1,541 $ 24,755 $ 3,305 $ 960 $ 135,435 Collectively evaluated loans ACL coverage 1.05 % 1.19 % 0.70 % 0.59 % 0.57 % 1.65 % 0.98 % Total loans $ 69,199 $ 8,816,080 $ 220,652 $ 4,208,674 $ 579,626 $ 58,512 $ 13,952,743 Total ACL $ 729 $ 106,170 $ 1,541 $ 27,811 $ 3,316 $ 983 $ 140,550 Total ACL to total loans 1.05 % 1.20 % 0.70 % 0.66 % 0.57 % 1.68 % 1.01 % 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 six TDR loans are individually evaluated 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 September 30, 2022, TDR loans totaled $53.6 million, compared to $65.5 million at December 31, 2021. The balance of loans with modified terms due to COVID-19 as of September 30, 2022 totaled $800 thousand compared to $22.8 million at December 31, 2021. The loans were modified in accordance with Section 4013 of the CARES Act. The CARES Act provides banks the option to temporarily suspend certain requirements under U.S. GAAP related to TDR for a limited period of time to account for the effects of COVID-19 if (i) the loan modification is made between March 1, 2020 and the earlier of January 1, 2022 or 60 days after the end of the coronavirus emergency declaration and (ii) the applicable loan was not more than 30 days past due as of December 31, 2019. As such, all modified loans that met the criteria outlined within Section 4013 of the CARES Act were not classified as TDR loans as of September 30, 2022 and December 31, 2021, unless the loans were TDR prior to the COVID-19 modification or borrowers were identified to be experiencing financial difficulty prior to the COVID-19 pandemic. As of September 30, 2022, there was only one remaining commercial real estate loan modified due to COVID-19 (see “COVID-19 Related Loan Modifications” in the Financial Condition section of the Management’s Discussion and Analysis of Financial Condition and Results of Operations for more information). A summary of the amortized cost of TDR loans on accrual and nonaccrual status by type of concession as of September 30, 2022 and December 31, 2021 is presented below: September 30, 2022 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 $ 5,410 $ 532 $ — $ 15 $ 23,369 $ 267 $ — $ — $ 29,593 Maturity / amortization concession 4,979 9,193 — 257 113 2,572 — 114 17,228 Rate concession 5,062 196 — — 100 1,401 — — 6,759 Total $ 15,451 $ 9,921 $ — $ 272 $ 23,582 $ 4,240 $ — $ 114 $ 53,580 December 31, 2021 TDR Loans on Accrual Status TDR Loans on Nonaccrual Status Total Real Estate Commercial Business Residential Mortgage Other Real Estate Commercial Business Residential Mortgage Other (Dollars in thousands) Payment concession $ 23,196 $ 790 $ — $ 16 $ 7,533 $ 420 $ — $ — $ 31,955 Maturity / amortization concession 15,449 7,284 — 183 269 3,109 — 117 26,411 Rate concession 5,161 339 — — 234 1,413 — — 7,147 Total $ 43,806 $ 8,413 $ — $ 199 $ 8,036 $ 4,942 $ — $ 117 $ 65,513 TDR loans on accrual

Leases

Leases	9 Months Ended
	Sep. 30, 2022
Leases [Abstract]
Leases	Leases The Company’s operating leases are real estate leases which are comprised of bank branch locations, loan production offices, and office spaces with remaining lease terms ranging from 1 to 10 years as of September 30, 2022. 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 September 30, 2022, ROU assets and related liabilities were $55.4 million and $59.3 million, respectively. At December 31, 2021, ROU assets and related liabilities were $52.7 million and $57.3 million, respectively. At September 30, 2022, the short term operating lease liability totaled $13.6 million and the long-term operating lease liability totaled $45.7 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 September 30, 2022 and December 31, 2021. During the nine months ended September 30, 2022, the Company extended nine leases and entered into one new lease contract. Lease extension terms ranged from one 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 Federal Home Loan Bank (“FHLB”) borrowing interest rate at a given period. The table below summarizes the Company’s net lease cost: Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 (Dollars in thousands) Operating lease cost $ 3,796 $ 3,778 $ 11,623 $ 11,498 Short term lease cost — — — — Variable lease cost 855 892 2,434 2,393 Sublease income (104) (102) (312) (354) Net lease cost $ 4,547 $ 4,568 $ 13,745 $ 13,537 Rent expense for the three and nine months ended September 30, 2022 was $4.0 million and $13.3 million, respectively. Rent expense for the three and nine months ended September 30, 2021 was $4.6 million and $13.6 million, respectively. The table below summarizes other information related to the Company’s operating leases: At or for the Nine Months Ended At or for the Nine Months Ended (Dollars in thousands) Cash paid for amounts included in the measurement of lease liabilities: Operating cash outflows for operating leases $ 11,954 $ 10,991 Right-of-use assets obtained in exchange for lease liabilities, net 13,698 965 Weighted-average remaining lease term - operating leases 4.7 years 5.4 years Weighted-average discount rate - operating leases 2.31 % 2.56 % The table below summarizes the maturity of remaining lease liabilities: September 30, 2022 (Dollars in thousands) 2022 $ 3,838 2023 14,533 2024 13,431 2025 11,680 2026 10,973 2027 and thereafter 8,666 Total lease payments 63,121 Less: imputed interest 3,787 Total lease obligations $ 59,334 As of September 30, 2022, the Company had three operating lease commitments that have not yet commenced totaling $3.3 million in lease payments over terms ranging between five

Deposits

Deposits	9 Months Ended
	Sep. 30, 2022
Deposits [Abstract]
Deposits	Deposits The aggregate amounts of time deposits in denominations of more than $250 thousand at September 30, 2022 and December 31, 2021, was $1.45 billion and $1.49 billion, respectively. Included in time deposits of more than $250 thousand were $300.0 million in California State Treasurer’s deposits at September 30, 2022 and December 31, 2021. The California State Treasurer’s deposits are subject to withdrawal based on the State’s periodic evaluations. The Company is required to pledge eligible collateral of at least 110% of outstanding deposits. At September 30, 2022 and December 31, 2021, securities with fair values of approximately $357.1 million and $359.8 million, respectively, were pledged as collateral for the California State Treasurer’s deposit. The Company also utilizes brokered deposits as a secondary source of funds. Total brokered deposits at September 30, 2022 and December 31, 2021, totaled $1.56 billion and $810.9 million, respectively. Brokered deposits at September 30, 2022 consisted of $314.7 million in money market and NOW accounts and $1.25 billion in time deposit accounts. Brokered deposits at December 31, 2021 consisted of $770.0 million in money market and NOW accounts and $40.9 million in time deposit accounts. The following is a breakdown of the Company’s deposits at September 30, 2022 and December 31, 2021: September 30, 2022 December 31, 2021 Balance Percentage (%) Balance Percentage (%) (Dollars in thousands) Noninterest bearing demand deposits $ 5,590,952 36 % $ 5,751,870 38 % Money market and NOW accounts 5,885,093 38 % 6,178,850 41 % Saving deposits 317,841 2 % 321,377 2 % Time deposits 3,708,323 24 % 2,788,353 19 % Total deposits $ 15,502,209 100 % $ 15,040,450 100 %

Borrowings

Borrowings	9 Months Ended
	Sep. 30, 2022
Debt Disclosure [Abstract]
Borrowings	Borrowings At September 30, 2022, borrowings totaled $1.07 billion consisting of $700.0 million in FHLB borrowings and $372.0 million in borrowings from the FRB compared to $300.0 million in FHLB borrowings at December 31, 2021. There were no borrowings from the FRB at December 31, 2021. The Company maintains a line of credit with the FHLB of San Francisco as a secondary source of funds. The borrowing capacity with the FHLB is limited to the lower of either 25% of the Bank’s total assets or the Bank’s collateral capacity, and was $4.52 billion at September 30, 2022, and $4.45 billion at December 31, 2021. 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 $81.2 million at September 30, 2022 and December 31, 2021. At September 30, 2022 and December 31, 2021, loans with a carrying amount of approximately $7.85 billion and $6.96 billion, respectively, were pledged at the FHLB for outstanding advances and remaining borrowing capacity. At September 30, 2022 and December 31, 2021, 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 total asset size and outstanding borrowings. FHLB advances had weighted average interest rates of 3.04% and 0.92%, at September 30, 2022 and December 31, 2021, respectively. FHLB advances at September 30, 2022 and December 31, 2021 had various maturities through December 2022. The interest rates of FHLB advances as of September 30, 2022 ranged between 2.39% and 3.22%. At September 30, 2022, the Company’s remaining borrowing capacity with the FHLB was $3.81 billion. 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 99% of the fair market value of the qualifying loans and securities that are pledged. At September 30, 2022, the outstanding principal balance of the qualifying loans pledged at the FRB was $923.2 million and there was one investment security pledged at the discount window with a fair value of $1.1 million. At September 30, 2022 and December 31, 2021, the total remaining available borrowing capacity at the FRB discount window was $420.6 million and $606.6 million, respectively. The Company had $372.0 million and $0 in borrowings from the FRB discount window at September 30, 2022 and December 31, 2021, respectively. The FRB borrowing outstanding at September 30, 2022 was an overnight borrowing and had an interest rate of 3.25%. The Company also maintains unsecured borrowing lines with other banks. There were no unsecured borrowings from other banks at September 30, 2022 and December 31, 2021.

Subordinated Debentures and Con

Subordinated Debentures and Convertible Notes	9 Months Ended
	Sep. 30, 2022
Subordinated Borrowings [Abstract]
Subordinated Debentures and Convertible Notes	Subordinated Debentures and Convertible Notes Subordinated Debt At September 30, 2022, 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 September 30, 2022: Issuance Trust Issuance Date Trust Preferred Security Amount Carrying Value of Debentures Rate Type Current Rate Maturity Date (Dollars in thousands) Nara Capital Trust III 06/05/2003 $ 5,000 $ 5,155 Variable 6.443% 06/15/2033 Nara Statutory Trust IV 12/22/2003 5,000 5,155 Variable 5.362% 01/07/2034 Nara Statutory Trust V 12/17/2003 10,000 10,310 Variable 6.477% 12/17/2033 Nara Statutory Trust VI 03/22/2007 8,000 8,248 Variable 4.943% 06/15/2037 Center Capital Trust I 12/30/2003 18,000 14,874 Variable 5.362% 01/07/2034 Wilshire Trust II 03/17/2005 20,000 16,375 Variable 5.317% 03/17/2035 Wilshire Trust III 09/15/2005 15,000 11,671 Variable 4.693% 09/15/2035 Wilshire Trust IV 07/10/2007 25,000 18,856 Variable 4.673% 09/15/2037 Saehan Capital Trust I 03/30/2007 20,000 15,614 Variable 5.294% 06/30/2037 Total $ 126,000 $ 106,258 The carrying value of Debentures at September 30, 2022 and December 31, 2021 was $106.3 million and $105.4 million, respectively. At September 30, 2022 and December 31, 2021, acquired Debentures had remaining discounts of $23.6 million and $24.5 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 September 30, 2022 and December 31, 2021 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 $217.5 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. 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 22.50% 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 issued by the Company were initially 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 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. On January 1, 2021, the Company early adopted ASU 2020-06 under the modified retrospective approach. Subsequently, the Company accounts for its convertible notes as a single debt instrument. At the adoption of ASU 2020-06, portions previously allocated to equity and the remaining convertible notes discount were both reversed. The reversal of the equity portions of the convertible notes totaled $18.3 million, net of taxes which was recorded as a reduction to additional paid-in capital. The adoption of ASU 2020-06 resulted in a $10.7 million net adjustment to beginning retained earnings. The value of the convertible notes at issuance and the carrying value as of September 30, 2022 and December 31, 2021 are presented in the tables below: September 30, 2022 Capitalization Gross Total Capitalization Carrying Amount (Dollars in thousands) Convertible notes principal balance $ 217,500 $ 217,500 Issuance costs to be capitalized 5 years (4,119) $ 3,532 (587) Carrying balance of convertible notes $ 213,381 $ 3,532 $ 216,913 December 31, 2021 Capitalization Gross Total Capitalization Carrying Amount (Dollars in thousands) Convertible notes principal balance $ 217,500 $ 217,500 Issuance costs to be capitalized 5 years (4,119) $ 2,828 (1,291) Carrying balance of convertible notes $ 213,381 $ 2,828 $ 216,209 Interest expense on the convertible notes for the three and nine months ended September 30, 2022 totaled $1.3 million and $4.0 million, respectively. Interest expense on the convertible notes for the three and nine months ended September 30, 2021 totaled $1.3 million and $4.0 million, respectively. With the adoption of ASU 2020-06, interest expense for the Company’s convertible notes consists of accrued interest on the convertible note coupon and interest expense from capitalized issuance costs. Issuance cost capitalization expense will only be recorded for the first five

Derivative Financial Instrument

Derivative Financial Instruments	9 Months Ended
	Sep. 30, 2022
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 change in fair value is recognized in the income statement as other income and fees. At September 30, 2022 and December 31, 2021, interest rate swaps related to the Company’s loan hedging program that were outstanding are presented in the following table: September 30, 2022 December 31, 2021 (Dollars in thousands) Interest rate swaps on loans with correspondent banks (included in other assets) Notional amount $ 988,492 $ 148,199 Weighted average remaining term (years) 5.2 7.2 Pay fixed rate (weighted average) 2.73 % 2.92 % Received variable rate (weighted average) 3.94 % 2.08 % Estimated fair value $ 74,803 $ 3,001 Interest rate swaps on loans with correspondent banks (included in other liabilities) Notional amount $ 15,969 $ 440,486 Weighted average remaining term (years) 10.0 6.1 Pay fixed rate (weighted average) 5.46 % 4.03 % Received variable rate (weighted average) 4.56 % 2.20 % Estimated fair value $ (50) $ (14,906) Back to back interest rate swaps with loan customers (included in other liabilities) Notional amount $ 988,492 $ 148,199 Weighted average remaining term (years) 5.2 7.2 Received fixed rate (weighted average) 2.73 % 2.92 % Pay variable rate (weighted average) 3.94 % 2.08 % Estimated fair value $ (74,803) $ (3,001) Back to back interest rate swaps with loan customers (included in other assets) Notional amount $ 15,969 $ 440,486 Weighted average remaining term (years) 10.0 6.1 Received fixed rate (weighted average) 5.46 % 4.03 % Pay variable rate (weighted average) 4.56 % 2.20 % Estimated fair value $ 50 $ 14,906 The Company offers foreign exchange contracts to customers to purchase and/or sell foreign currencies at set rates in the future. The foreign exchange contracts allow customers to hedge the foreign exchange rate risk of their deposits and loans denominated in foreign currencies. In conjunction with this, the Company also enters into offsetting back-to-back contracts with institutional counterparties to hedge our foreign exchange rate risk. These back-to-back contracts are intended to offset each other and allow us to offer our customers foreign exchange products. These foreign exchange contracts are not designated as hedging instruments and are recorded at fair value in other assets and other liabilities. During the three and nine months ended September 30, 2022, the changes in fair value on foreign exchange contracts were gains of $9 thousand and $9 thousand, respectively, and were recognized in the income statement as other income and fees. At September 30, 2022, $130 thousand and $21 thousand in back to back foreign exchange contracts with correspondent banks, with notional amounts of $2.6 million and $338 thousand, were included in other assets and other liabilities, respectively. At September 30, 2022, $21 thousand and $122 thousand in back to back foreign exchange contracts with customers, with notional amounts of $338 thousand and $2.6 million, were included in other assets and other liabilities, respectively. At December 31, 2021, there were no back to back foreign exchange contracts outstanding. At September 30, 2022, the Company had risk participation agreements with an outside counterparty for an interest rate swap related to a loan in which it is a participant. The risk participation agreement provides credit protection to the financial institution should the borrower fail to perform on its interest rate derivative contract. Risk participation agreements are credit derivatives not designated as hedges. Credit derivatives are not speculative and are not used to manage interest rate risk in assets or liabilities. Changes in the fair value in credit derivatives are recognized directly in earnings. The fee received, less the estimate of the loss for credit exposure, was recognized in earnings at the time of the transaction. At September 30, 2022, the notional amount of the risk participation agreements sold was $127.4 million with a credit valuation adjustment of $20 thousand. At December 31, 2021, the notional amount of the risk participation agreements sold was $123.9 million with a credit valuation adjustment of $93 thousand. As part of the overall liability management, the Company utilizes interest rate swap agreements to help manage interest rate risk positions. The notional amount of the interest rate swaps do not represent the amount exchanged by the parties. The exchange of cash flows is determined by reference to the notional amounts and the other terms of the interest rate swap agreements. The Company had one existing non-forward starting interest rate swap agreement as of September 30, 2022 and December 31, 2021 with a notional amount of $100.0 million designated as cash flow hedges of certain LIBOR-based debt. At September 30, 2022, the Company had forward starting interest rate swap agreements with a total notional amount of $475.0 million designated as cash flow hedges of liabilities tied to the federal funds rate. The weighted average term for forward starting interest rate swap agreements was 4.5 years. The Company’s swaps were determined to be fully effective during the periods presented. The aggregate fair value of the swaps are recorded in assets or liabilities with changes in fair value recorded in other comprehensive income. The gain or loss on derivatives is recorded in accumulated other comprehensive income (“AOCI”) and is subsequently reclassified into interest expense and interest income in the period during which the hedged forecasted transaction affects earnings. Amounts reported in AOCI related to interest rate swap derivatives will be reclassified to interest income and interest expense as interest payments are received or paid on the Company’s derivatives. The Company expects the hedges to remain fully effective throughout the remaining terms. For the three and nine months ended September 30, 2022, the Company reclassified $511 thousand and $561 thousand, respectively, from accumulated other comprehensive income to interest expense. For the three and nine months ended September 30, 2021, the Company reclassified $88 thousand and $227 thousand, respectively, from accumulated other comprehensive income to interest expense. At September 30, 2022 and December 31, 2021, interest rate swaps designated as cash flow hedges are presented in the following table: September 30, 2022 December 31, 2021 (Dollars in thousands) Interest rate swaps designated as cash flow hedge (included in other assets) Notional amount $ 100,000 $ 100,000 Weighted average remaining term (years) 2.5 3.3 Received variable rate (weighted average) 2.74 % 0.12 % Pay fixed rate (weighted average) 0.49 % 0.49 % Estimated fair value $ 9,161 $ 2,291 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 September 30, 2022, the Company had approximately $1.5 million in interest rate lock commitments and total forward sales commitments for the future delivery of residential mortgage loans. At December 31, 2021, the Company had approximately $17.4 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: September 30, 2022 December 31, 2021 Notional Amount Fair Value Notional Amount Fair Value (Dollars in thousands) Assets: Interest rate lock commitments $ 468 $ 1 $ 16,518 $ 230 Forward sale contracts related to mortgage banking 1,000 41 6,392 17 Liabilities: Interest rate lock commitments $ 1,220 $ (39) $ 907 $ (2) Forward sale contracts related to mortgage banking 500 (3) 25,305 (74)

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2022
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, and commitments to fund investments in affordable housing partnerships. 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 September 30, 2022 and December 31, 2021 are summarized as follows: September 30, 2022 December 31, 2021 (Dollars in thousands) Commitments to extend credit $ 2,787,710 $ 2,329,421 Standby letters of credit 135,056 126,137 Other letters of credit 26,937 56,333 Commitments to fund investments in affordable housing partnerships 12,399 9,514 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 $20 thousand at September 30, 2022 and $52 thousand at December 31, 2021. It is reasonably possible that the Company may incur losses in excess of 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	9 Months Ended
	Sep. 30, 2022
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, 2021, the Company performed a qualitative assessment to test for impairment and the management has concluded that there was no impairment. As the Company operates as single business unit, goodwill impairment was assessed based on the Company as a whole. Goodwill is not amortized for book purposes and is not tax deductible. The carrying amount of the Company’s goodwill as of September 30, 2022 and December 31, 2021 was $464.5 million. There was no impairment of goodwill recorded during the three and nine months ended September 30, 2022. Core deposit intangible assets are amortized over their estimated lives or ten years. Amortization expense related to core deposit intangible assets totaled $486 thousand and $1.5 million for the three and nine months ended September 30, 2022, respectively. Amortization expense related to core deposit intangible assets totaled $509 thousand and $1.5 million for the three and nine months ended September 30, 2021, respectively. The following table provides information regarding the core deposit intangibles at September 30, 2022 and December 31, 2021: September 30, 2022 December 31, 2021 Core Deposit Intangibles Related To: Amortization Period Gross Accumulated Carrying Amount Accumulated Carrying Amount (Dollars in thousands) Foster Bankshares acquisition 10 years $ 2,763 $ (2,627) $ 136 $ (2,504) $ 259 Wilshire Bancorp acquisition 10 years 18,138 (12,062) 6,076 (10,726) 7,412 Total $ 20,901 $ (14,689) $ 6,212 $ (13,230) $ 7,671 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 September 30, 2022 and December 31, 2021, the Company did not have a valuation allowance on its servicing assets. The changes in servicing assets for the three and nine months ended September 30, 2022 and 2021 were as follows: Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 (Dollars in thousands) Balance at beginning of period $ 11,215 $ 11,566 $ 10,418 $ 12,692 Additions through originations of servicing assets 1,338 710 4,228 2,039 Amortization (952) (1,489) (3,045) (3,944) Balance at end of period $ 11,601 $ 10,787 $ 11,601 $ 10,787 Loans serviced for others are not reported as assets. The principal balances of loans serviced for other institutions were $1.10 billion as of September 30, 2022 and $1.04 billion as of December 31, 2021. 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 September 30, 2022 and December 31, 2021 are presented below. September 30, 2022 December 31, 2021 SBA Servicing Assets: Weighted-average discount rate 9.67% 11.20% Constant prepayment rate 12.05% 14.64% Mortgage Servicing Assets: Weighted-average discount rate 11.88% 8.63% Constant prepayment rate 9.63% 9.58%

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2022
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes For the three months ended September 30, 2022, the Company had an income tax provision totaling $19.7 million on pretax income of $73.4 million, representing an effective tax rate of 26.80%, compared with an income tax provision of $19.9 million on pretax income of $75.4 million, representing an effective tax rate of 26.40% for the three months ended September 30, 2021. For the nine months ended September 30, 2022, the Company had an income tax provision totaling $59.6 million on pretax income of $226.1 million, representing an effective tax rate of 26.34%, compared with an income tax provision of $51.6 million on pretax income of $204.6 million, representing an effective tax rate of 25.24% for the nine months ended September 30, 2021. The increase in effective tax rate for the three and nine months ended September 30, 2022 compared to the three and nine months ended September 30, 2021 was primarily due to a decrease in affordable housing tax credits compared with the prior year. 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 $3.3 million at both September 30, 2022 and December 31, 2021 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 $475 thousand and $387 thousand, for accrued interest (no portion was related to penalties) at September 30, 2022 and December 31, 2021, respectively. Management believes it is reasonably possible that the unrecognized tax benefits may decrease by $789 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 return is closed for all tax years up to and including 2017. 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 City Department of Finance for the 2016, 2017, and 2018 tax years. While the outcome of the examination is unknown, the Company expects no material adjustments. New York State Department of Taxation and Finance recently completed the examination for the 2017 tax year with no adjustment to the tax return filed. 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.

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2022
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: Investment Securities The fair values of investment securities available for sale and held to maturity 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 value of the Company’s Level 3 security available for sale was 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 is classified as Level 2. Other Derivatives Other derivatives consist of interest rate swaps designated as cash flow hedges, foreign exchange contracts and risk participation agreements. The fair values of these other derivative financial instruments are based upon the estimated amount the Company would receive or pay to terminate the instruments, taking into account current interest rates, foreign exchange rates and, when appropriate, the current credit worthiness of the counterparties. Interest rate swaps designated as cash flow hedges and foreign exchange contracts are classified within Level 2 due to the observable nature of the inputs used in deriving the fair value of these contracts. Credit derivatives such as risk participation agreements are valued based on credit worthiness of the underlying borrower which is a significant unobservable input and therefore is classified as Level 3. 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 a 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 September 30, 2022 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. Treasury securities $ 3,889 $ 3,889 $ — $ — U.S. Government agency and U.S. Government sponsored enterprises: Agency securities 3,875 — 3,875 — Collateralized mortgage obligations 824,327 — 824,327 — Mortgage-backed securities: Residential 456,590 — 456,590 — Commercial 379,615 — 379,615 — Asset-backed securities 143,903 — 143,903 — Corporate securities 18,715 — 18,715 — Municipal securities 162,434 — 161,520 914 Equity investments with readily determinable fair value 4,294 4,294 — — Interest rate swaps 74,853 — 74,853 — Mortgage banking derivatives 42 — 42 — Other derivatives 27,343 — 27,343 — Liabilities: Interest rate swaps 74,853 — 74,853 — Mortgage banking derivatives 42 — 42 — Other derivatives 163 — 143 20 Fair Value Measurements at the End of December 31, 2021 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 $ 1,026,430 $ — $ 1,026,430 $ — Mortgage-backed securities: Residential 759,224 — 759,224 — Commercial 599,402 — 599,402 — Asset-backed securities 153,451 — 153,451 — Corporate securities 22,484 — 22,484 — Municipal securities 105,284 — 104,246 1,038 Equity investments with readily determinable fair value 26,823 26,823 — — Interest rate swaps 17,907 — 17,907 — Mortgage banking derivatives 247 — 247 — Other derivatives 2,291 — 2,291 — Liabilities: Interest rate swaps 17,907 — 17,907 — Mortgage banking derivatives 76 — 76 — Other derivatives 93 — — 93 There were no transfers between Levels 1, 2, and 3 during the three and nine months ended September 30, 2022 and 2021. The table below presents a reconciliation and income statement classification of gains (losses) for the municipal security and risk participation agreements measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the three and nine months ended September 30, 2022 and 2021: Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 (Dollars in thousands) Municipal securities: Beginning Balance $ 1,019 $ 1,058 $ 1,038 $ 1,022 Change in fair value included in other comprehensive income (loss) (105) (3) (124) 33 Ending Balance $ 914 $ 1,055 $ 914 $ 1,055 Risk participation agreements: Beginning Balance $ 31 $ 64 $ 93 $ 398 Change in fair value included in income (expense) (11) (12) (73) (346) Ending Balance $ 20 $ 52 $ 20 $ 52 The Company measures certain assets at fair value on a non-recurring basis including collateral dependent loans, 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 September 30, 2022 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 $ 6,368 $ — $ — $ 6,368 Commercial business 5,794 — — 5,794 OREO 1,050 — — 1,050 Fair Value Measurements at the End of December 31, 2021 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 $ 12,293 $ — $ — $ 12,293 Commercial business 3,656 — — 3,656 Loans held for sale, net 26,154 — 26,154 — OREO 2,167 — — 2,167 For assets measured at fair value on a non-recurring basis, the total net losses, which include charge offs, recoveries, recorded ACL, valuations, and recognized gains and losses on sales are summarized below: For the Three Months Ended September 30, For the Nine Months Ended September 30, 2022 2021 2022 2021 (Dollars in thousands) Assets: Collateral dependent loans at fair value: Real estate loans $ (962) $ (1,083) $ (1,573) $ (1,496) Commercial business (3,323) (2,025) (3,323) (2,025) Loans held for sale, net — (6,121) — (17,900) OREO (337) (259) (593) (582) Fair Value of Financial Instruments Carrying amounts and estimated fair values of financial instruments, not previously presented, at September 30, 2022 and December 31, 2021 were as follows: September 30, 2022 Carrying Amount Estimated Fair Value Fair Value Measurement (Dollars in thousands) Financial Assets: Cash and cash equivalents $ 331,336 $ 331,336 Level 1 Interest bearing deposits in other financial institutions 3,968 3,945 Level 2 Investment securities HTM 271,185 258,677 Level 2 Equity investments without readily determinable fair values 38,030 38,030 Level 2 Loans held for sale 41,989 43,973 Level 2 Loans receivable, net 15,330,626 14,937,811 Level 3 Accrued interest receivable 42,363 42,363 Level 2/3 Servicing assets, net 11,601 16,650 Level 3 Customers’ liabilities on acceptances 570 570 Level 2 Financial Liabilities: Noninterest bearing deposits $ 5,590,952 $ 5,590,952 Level 2 Saving and other interest bearing demand deposits 6,202,934 6,202,934 Level 2 Time deposits 3,708,323 3,706,939 Level 2 FHLB and FRB borrowings 1,072,000 1,072,080 Level 2 Convertible notes, net 216,913 211,562 Level 1 Subordinated debentures 106,258 107,870 Level 2 Accrued interest payable 11,713 11,713 Level 2 Acceptances outstanding 570 570 Level 2 December 31, 2021 Carrying Amount Estimated Fair Value Fair Value Measurement (Dollars in thousands) Financial Assets: Cash and cash equivalents $ 316,266 $ 316,266 Level 1 Interest bearing deposits in other financial institutions 12,851 12,853 Level 2 Equity investments without readily determinable fair values 31,037 31,037 Level 2 Loans held for sale 99,049 103,767 Level 2 Loans receivable, net 13,812,193 13,698,579 Level 3 Accrued interest receivable 41,842 41,842 Level 2/3 Servicing assets, net 10,418 13,500 Level 3 Customers’ liabilities on acceptances 1,521 1,521 Level 2 Financial Liabilities: Noninterest bearing deposits $ 5,751,870 $ 5,751,870 Level 2 Saving and other interest bearing demand deposits 6,500,227 6,500,227 Level 2 Time deposits 2,788,353 2,790,596 Level 2 FHLB advances 300,000 301,936 Level 2 Convertible notes, net 216,209 214,612 Level 1 Subordinated debentures 105,354 117,961 Level 2 Accrued interest payable 4,272 4,272 Level 2 Acceptances outstanding 1,521 1,521 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. The fair value of loans 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 include 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 on 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 deposit fair values incorporate 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	9 Months Ended
	Sep. 30, 2022
Equity [Abstract]
Stockholders’ Equity	Stockholders’ Equity Total stockholders’ equity at September 30, 2022 was $1.98 billion, compared to $2.09 billion at December 31, 2021. In January 2022, the Company’s Board of Directors approved a share repurchase program that authorizes the Company to repurchase up to $50.0 million of its common stock. During the three and nine months ended September 30, 2022, the Company repurchased 0 and 1,038,986 shares of common stock totaling $0 and $14.7 million as part of this program which was recorded as treasury stock. For the three months ended September 30, 2022 and 2021, the Company paid cash dividends of $0.14 per common share. For both the nine months ended September 30, 2022 and 2021, the Company paid cash dividends of $0.42 per common share. The following table presents the quarterly changes to accumulated other comprehensive income for the three and nine months ended September 30, 2022 and 2021: Three Months Ended, Nine Months Ended, September 30, 2022 September 30, 2021 September 30, 2022 September 30, 2021 (Dollars in thousands) Balance at beginning of period $ (171,707) $ 15,051 $ (11,412) $ 32,753 Unrealized net losses on securities available for sale (112,043) (16,433) (308,974) (43,050) Unrealized net losses on securities available for sale transferred to held to maturity — — (36,576) — Unrealized net gains on interest rate swaps used for cash flow hedge 18,893 120 24,901 1,643 Reclassification adjustments for net losses realized in net income 662 88 688 227 Tax effect 27,660 4,717 94,838 11,970 Other comprehensive loss, net of tax (64,828) (11,508) (225,123) (29,210) Balance at end of period $ (236,535) $ 3,543 $ (236,535) $ 3,543 Reclassifications for net losses realized in net income for the three and nine months ended September 30, 2022 and 2021 relate to net gains on interest rate swaps used for cash flow hedges and amortization on unrealized loss from transferred investment securities to HTM. Gains and losses on interest rate swaps are recorded in noninterest income under other income and fees in the Consolidated Statements of Income. The unrealized holding loss at the date of transfer on securities held to maturity will continue to be reported, net of taxes, in accumulated other comprehensive income (“AOCI”) as a component of stockholders’ equity, and amortized over the remaining life of the securities as an adjustment of yield, offsetting the impact on yield of the corresponding discount amortization. For the three and nine months ended September 30, 2022, the Company recorded reclassification adjustments of $511 thousand and $561 thousand, respectively, from other comprehensive income to gains from cash flow hedge relationships. For the three and nine months ended September 30, 2021, the Company recorded reclassification adjustments of $88 thousand and $227 thousand, respectively, from other comprehensive income to losses from cash flow hedge relationships. For the three and nine months ended September 30, 2022, the Company recorded reclassification adjustments of $1.2 million and $1.2 million, respectively, from other comprehensive losses to interest expense to amortize transferred unrealized losses to investment securities HTM, compared to zero for the same periods in 2021.

Stock-Based Compensation

Stock-Based Compensation	9 Months Ended
	Sep. 30, 2022
Share-Based Payment Arrangement [Abstract]
Stock-Based Compensation	Stock-Based Compensation In 2019, the Company’s stockholders approved the 2019 stock-based incentive plan (the “2019 Plan”), which provides for grants of stock options, stock appreciation rights (“SAR”), 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 provides the Company flexibility to (i) attract and retain qualified non-employee directors, executives, other key employees, and potentially consultants with appropriate equity-based awards to; (ii) motivate high levels of performance; (iii) recognize employee and potentially consultants’ 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 2019 Plan, the exercise price for SARs and NQSOs may not be less than 100% of fair market value on the date of grant. Performance units are awarded to 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 Under the 2019 Plan, 1,463,349 shares were available for future grants as of September 30, 2022. 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 nine months ended September 30, 2022: Number of Shares Weighted-Average Exercise Price Per Share Weighted-Average Aggregate Intrinsic Value (Dollars in thousands) Outstanding - January 1, 2022 814,877 $ 15.17 Granted — — Exercised (105,510) 5.02 Expired (20,000) 17.18 Forfeited — — Outstanding - September 30, 2022 689,367 $ 16.66 3.22 $ — Options exercisable - September 30, 2022 689,367 $ 16.66 3.22 $ — The following is a summary of the Company’s restricted stock and performance unit activity for the nine months ended September 30, 2022: Number of Shares Weighted-Average Grant Date Fair Value Outstanding (unvested) - January 1, 2022 1,561,197 $ 12.08 Granted 981,558 15.93 Vested (616,521) 12.66 Forfeited (168,217) 13.50 Outstanding (unvested) - September 30, 2022 1,758,017 $ 13.89 The total fair value of restricted stock and performance units vested as of September 30, 2022 and 2021 was $9.5 million and $9.4 million, respectively. The Company maintains 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 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 expense. The compensation expense for the ESPP during the three and nine months ended September 30, 2022 was $50 thousand and $284 thousand, respectively. The compensation expense for the ESPP during the three and nine months ended September 30, 2021 was $219 thousand and $296 thousand, respectively. The Company discontinued the ESPP program in July 2022. The total amounts charged against income related to stock-based payment arrangements, including the ESPP, were $3.2 million and $9.3 million for the three and nine months ended September 30, 2022, respectively. For the three and nine months ended September 30, 2021, $2.2 million and $6.8 million, respectively, of stock-based payment arrangements were charged against income. The income tax benefit recognized was approximately $865 thousand and $2.4 million for the three and nine months ended September 30, 2022, respectively. The income tax benefit recognized for the three and nine months ended September 30, 2021, was approximately $579 thousand and $1.7 million, respectively. At September 30, 2022, there was no unrecognized compensation expense related to non-vested stock option grants. Unrecognized compensation expense related to non-vested restricted stock and performance units was $16.5 million and is expected to be recognized over a weighted average vesting period of 1.90 years.

Regulatory Matters

Regulatory Matters	9 Months Ended
	Sep. 30, 2022
Banking Regulation [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 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 September 30, 2022, the capital ratios for the Company and the Bank were in excess of all regulatory minimum capital ratios with the addition of the conservation buffer. On January 1, 2020, the Company adopted ASU 2016-13 and implemented the CECL methodology. In response to the COVID-19 pandemic, federal regulatory agencies published a final rule that provides the option to delay the cumulative effect of the day 1 impact of CECL adoption on regulatory capital, along with 25% of the change in the adjusted allowance for credit losses (as computed for regulatory capital purposes which excludes purchased credit deteriorated (“PCD”) loans), for two years, followed by a three-year phase-in period. The Company has elected the five-year transition period consistent with the final rule issued by the federal regulatory agencies. As of September 30, 2022 and December 31, 2021, 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 tables below for the dates indicated and include the effects of the Company’s election to utilize the five-year transition described above: Actual Required For Capital Adequacy Purposes Minimum Capital Adequacy Required To Be Well Capitalized September 30, 2022 Amount Ratio Amount Ratio Amount Ratio Amount Ratio (Dollars in thousands) Common equity Tier 1 capital Company $ 1,760,843 10.32 % $ 767,941 4.50 % $ 1,194,575 7.00 % N/A N/A Bank $ 2,014,788 11.81 % $ 767,682 4.50 % $ 1,194,173 7.00 % $ 1,108,875 6.50 % Total capital Company $ 2,000,653 11.72 % $ 1,365,228 8.00 % $ 1,791,862 10.50 % N/A N/A Bank $ 2,152,241 12.62 % $ 1,364,769 8.00 % $ 1,791,259 10.50 % $ 1,705,961 10.00 % Tier 1 capital Company $ 1,863,200 10.92 % $ 1,023,921 6.00 % $ 1,450,555 8.50 % N/A N/A Bank $ 2,014,788 11.81 % $ 1,023,577 6.00 % $ 1,450,067 8.50 % $ 1,364,769 8.00 % Tier 1 capital Company $ 1,863,200 10.25 % $ 727,401 4.00 % N/A N/A N/A N/A Bank $ 2,014,788 11.08 % $ 727,200 4.00 % N/A N/A $ 909,000 5.00 % Actual Required For Capital Adequacy Purposes Minimum Capital Adequacy Required To Be Well Capitalized December 31, 2021 Amount Ratio Amount Ratio Amount Ratio Amount Ratio (Dollars in thousands) Common equity Tier 1 capital Company $ 1,657,754 11.03 % $ 676,633 4.50 % $ 1,052,540 7.00 % N/A N/A Bank $ 1,947,914 12.96 % $ 676,328 4.50 % $ 1,052,066 7.00 % $ 976,919 6.50 % Total capital Company $ 1,867,968 12.42 % $ 1,202,903 8.00 % $ 1,578,811 10.50 % N/A N/A Bank $ 2,056,675 13.68 % $ 1,202,361 8.00 % $ 1,578,099 10.50 % $ 1,502,952 10.00 % Tier 1 capital Company $ 1,759,207 11.70 % $ 902,178 6.00 % $ 1,278,085 8.50 % N/A N/A Bank $ 1,947,914 12.96 % $ 901,771 6.00 % $ 1,277,509 8.50 % $ 1,202,361 8.00 % Tier 1 capital Company $ 1,759,207 10.11 % $ 695,795 4.00 % N/A N/A N/A N/A Bank $ 1,947,914 11.20 % $ 695,593 4.00 % N/A N/A $ 869,491 5.00 %

Revenue Recognition

Revenue Recognition	9 Months Ended
	Sep. 30, 2022
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 September 30, Nine Months Ended September 30, 2022 2021 2022 2021 (Dollars in thousands) Noninterest bearing deposit account income: Monthly service charges $ 250 $ 259 $ 751 $ 808 Customer analysis charges 1,426 847 3,541 2,332 NSF charges 749 606 2,149 1,921 Other service charges 87 81 268 252 Total noninterest bearing deposit account income 2,512 1,793 6,709 5,313 Interest bearing deposit account income: Monthly service charges 23 21 70 68 Total service fees on deposit accounts $ 2,535 $ 1,814 $ 6,779 $ 5,381 Wire transfer fee income: Wire transfer fees $ 765 $ 766 $ 2,254 $ 2,256 Foreign exchange fees 91 70 360 347 Total wire transfer fees $ 856 $ 836 $ 2,614 $ 2,603 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”

Basis of Presentation (Policies

Basis of Presentation (Policies)	9 Months Ended
	Sep. 30, 2022
Basis Of Presentation [Abstract]
Consolidation	The consolidated financial statements include the accounts of Hope Bancorp and its wholly owned subsidiaries, principally Bank of Hope. All intercompany transactions and balances have been eliminated in consolidation. The Company has made all adjustments, that in the opinion of management, are necessary to fairly present the Company’s financial position at September 30, 2022 and December 31, 2021 and the results of operations for the three and nine months ended September 30, 2022 and 2021. 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.
Pending Accounting Pronouncements	Pending Accounting PronouncementsIn March 2022, the FASB issued ASU 2022-02, Financial Instruments-Credit Losses (Topic 326). The standard addresses the following: 1) eliminates the accounting guidance for TDRs, will require an entity to determine whether a modification results in a new loan or a continuation of an existing loan, 2) expands disclosures related to modifications, and 3) will require disclosure of current period gross write-offs of financing receivables within the vintage disclosures table. The amendments in this update are effective for fiscal years beginning after December 15, 2022, including interim periods within those fiscal years and are applied prospectively, except with respect to the recognition and measurement of TDRs, where an entity has the option to apply a modified retrospective transition method. Early adoption of the amendments in this update is permitted. An entity may elect to early adopt the amendments regarding TDRs and related disclosure enhancements separately from the amendments related to vintage disclosures. The Company is assessing the impact that the adoption of ASU 2022-02 will have on its consolidated financial statements.
Financing Receivables	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 for credit losses on an individual basis. The Company differentiates its loan segments based on shared risk characteristics for which allowance for credit losses is measured on a collective basis. Risk Characteristics Real estate Property type, location, owner occupied status Commercial business Delinquency status, risk rating, industry type Residential mortgage FICO score, LTV, delinquency status, maturity date, collateral value, location Consumer and other Historical losses 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. Included in the quantitative portion of the analysis of the allowance for credit losses are key inputs including borrowers’ net operating income, debt coverage ratios, real estate collateral values, as well as key inputs that are more subjective or require management’s judgement including key macroeconomic variables from Moody’s forecast scenarios including GDP, unemployment rates, interest rates, and commercial real estate prices. These key inputs are utilized in the Company’s models to develop PD and LGD assumptions used in the calculation of estimated quantitative losses. The ACL for the Company’s construction, credit card, and certain consumer loans is calculated based on a non-modeled approach utilizing historical loss rates 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 2% of the Company’s total loan portfolio as of September 30, 2022. The Company’s Economic Forecast Committee (“EFC”) reviews 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. As of September 30, 2022, the Company utilized the Consensus economic forecast scenario from Moody’s as it best aligned with management’s expectations of future forecasts. The Company also utilized Moody’s Consensus economic forecast for the calculation of the December 31, 2021 ACL. The Consensus economic forecast projects that GDP growth will decline to less than 1.0% in 2023 then grow to over 2.0% by the end of 2024 with unemployment rising to the peak of 4.0% in 2023 and 2024. Commercial real estate prices in the Consensus scenario is expected to see a substantial reduction with the commercial real estate price index declining to -0.4% for 2023 before increasing to 4.5% for 2024. 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 similar risk characteristics such as nonaccrual and TDR loans above $1.0 million, the Company evaluates these loans on an individual basis in accordance with ASC 326. These nonaccrual and TDR loans are considered to have different risk profiles than performing loans and therefore are evaluated separately. The Company decided to collectively assess TDRs and nonaccrual loans with balances below $1.0 million 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 individually assessed loans, the ACL is measured using either 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, the Company 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, the Company 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 of 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 an estimated funding rate to allocate an allowance to undrawn exposures. This funding rate is used as a credit conversion factor to capture how much undrawn lines of credit can potentially become drawn at any point. The 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)	9 Months Ended
	Sep. 30, 2022
Earnings Per Share [Abstract]
Computation of basic and diluted EPS	The following tables show the computation of basic and diluted EPS for the three and nine months ended September 30, 2022 and 2021. Three Months Ended September 30, 2022 2021 Net Income Weighted-Average Shares Earnings Net Income Weighted-Average Shares Earnings (Dollars in thousands, except share and per share data) Basic EPS - common stock $ 53,748 119,476,035 $ 0.45 $ 55,499 122,244,948 $ 0.45 Effect of dilutive securities: Stock options, restricted stock, and ESPP shares 520,488 663,588 Diluted EPS - common stock $ 53,748 119,996,523 $ 0.45 $ 55,499 122,908,536 $ 0.45 Nine Months Ended September 30, 2022 2021 Net Income Weighted-Average Shares Earnings Net Income Weighted-Average Shares Earnings (Dollars in thousands, except share and per share data) Basic EPS - common stock $ 166,574 119,940,044 $ 1.39 $ 152,949 123,050,174 $ 1.24 Effect of dilutive securities: Stock options, restricted stock, and ESPP shares 655,944 798,338 Diluted EPS - common stock $ 166,574 120,595,988 $ 1.38 $ 152,949 123,848,512 $ 1.23

Equity Investments (Tables)

Equity Investments (Tables)	9 Months Ended
	Sep. 30, 2022
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 and nine months ended September 30, 2022 and 2021 were recorded in other noninterest income and fees as summarized in the table below: Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 (Dollars in thousands) Net change in fair value recorded during the period on equity investments with readily determinable fair value $ 186 $ (127) $ (1,926) $ (534) Less: Net change in fair value recorded on equity investments sold during the period 375 — (1,354) — Net change in fair value on equity investments with readily determinable fair values held at the end of the period $ (189) $ (127) $ (572) $ (534)

Securities Available for Sale (

Securities Available for Sale (Tables)	9 Months Ended
	Sep. 30, 2022
Debt Securities, Available-for-Sale [Abstract]
Summary of Securities Available for Sale	The following is a summary of investment securities as of the dates indicated: September 30, 2022 Amortized Gross Gross Fair (Dollars in thousands) Debt securities available for sale: U.S. Treasury securities $ 3,988 $ — $ (99) $ 3,889 U.S. Government agency and U.S. Government sponsored enterprises: Agency securities 4,000 — (125) 3,875 Collateralized mortgage obligations 974,052 9 (149,734) 824,327 Mortgage-backed securities: Residential 555,997 — (99,407) 456,590 Commercial 426,483 — (46,868) 379,615 Asset-backed securities 153,548 — (9,645) 143,903 Corporate securities 23,362 — (4,647) 18,715 Municipal securities 180,265 — (17,831) 162,434 Total investment securities available for sale $ 2,321,695 $ 9 $ (328,356) $ 1,993,348 Amortized Gross Gross Fair (Dollars in thousands) Debt securities held to maturity: U.S. Government agency and U.S. Government sponsored enterprises: Mortgage-backed securities: Residential $ 159,538 $ — $ (7,840) $ 151,698 Commercial 111,647 — (4,668) 106,979 Total investment securities held to maturity $ 271,185 $ — $ (12,508) $ 258,677 December 31, 2021 Amortized Gross Gross Fair (Dollars in thousands) Debt securities available for sale: U.S. Government agency and U.S. Government sponsored enterprises: Collateralized mortgage obligations $ 1,039,543 $ 3,357 $ (16,470) $ 1,026,430 Mortgage-backed securities: Residential 769,113 1,985 (11,874) 759,224 Commercial 595,659 9,103 (5,360) 599,402 Asset-backed securities 153,564 11 (124) 153,451 Corporate securities 23,398 130 (1,044) 22,484 Municipal securities 104,371 1,680 (767) 105,284 Total investment securities available for sale $ 2,685,648 $ 16,266 $ (35,639) $ 2,666,275
Interest Income	The following table presents a breakdown of interest income recorded for investment securities that are taxable and nontaxable. Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 (Dollars in thousands) Interest income on investment securities Taxable $ 12,907 $ 9,025 $ 36,303 $ 24,182 Nontaxable 591 182 1,159 653 Total $ 13,498 $ 9,207 $ 37,462 $ 24,835
Investments Classified by Contractual Maturity Date	The amortized cost and estimated fair value of investment securities at September 30, 2022, by contractual maturity, are presented in the table below. Collateralized mortgage obligations, mortgage-backed securities, and asset-backed securities are presented by final maturity. 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. Available for Sale Held to Maturity Amortized Estimated Amortized Estimated (Dollars in thousands) Debt securities: Due within one year $ 2,616 $ 2,565 $ — $ — Due after one year through five years 102,687 95,593 — — Due after five years through ten years 159,709 143,728 36,906 35,677 Due after ten years 2,056,683 1,751,462 234,279 223,000 Total $ 2,321,695 $ 1,993,348 $ 271,185 $ 258,677
Schedule of Gross Unrealized Losses and Estimated Fair Values of 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. The length of time that the individual securities have been in a continuous unrealized loss position is not a factor in determining credit impairment with the adoption of current expected credit losses (“CECL”). September 30, 2022 Less than 12 months 12 months or longer Total Description of Number Fair Gross Number Fair Gross Number Fair Gross (Dollars in thousands) U.S. Treasury securities 1 $ 3,889 $ (99) — $ — $ — 1 $ 3,889 $ (99) Agency securities* 1 3,875 (125) — — — 1 3,875 (125) Collateralized mortgage obligations* 87 213,800 (23,090) 36 605,594 (126,644) 123 819,394 (149,734) Mortgage-backed securities: Residential* 31 102,932 (16,266) 34 353,658 (83,141) 65 456,590 (99,407) Commercial* 42 259,911 (23,430) 13 119,704 (23,438) 55 379,615 (46,868) Asset-backed securities 9 71,998 (4,759) 9 71,905 (4,886) 18 143,903 (9,645) Corporate securities 1 3,533 (467) 5 15,182 (4,180) 6 18,715 (4,647) Municipal securities 61 131,751 (13,514) 13 30,683 (4,317) 74 162,434 (17,831) Total 233 $ 791,689 $ (81,750) 110 $ 1,196,726 $ (246,606) 343 $ 1,988,415 $ (328,356) December 31, 2021 Less than 12 months 12 months or longer Total Description of Number Fair Gross Number Fair Gross Number Fair Gross (Dollars in thousands) Collateralized mortgage obligations* 39 $ 757,799 $ (15,445) 2 $ 37,438 $ (1,025) 41 $ 795,237 $ (16,470) Mortgage-backed securities: Residential* 49 603,372 (9,371) 13 75,211 (2,503) 62 678,583 (11,874) Commercial* 24 214,384 (3,339) 4 57,656 (2,021) 28 272,040 (5,360) Asset-backed securities 13 115,885 (124) — — — 13 115,885 (124) Corporate securities 4 14,067 (331) 1 4,288 (713) 5 18,355 (1,044) Municipal securities 23 59,403 (767) — — — 23 59,403 (767) Total 152 $ 1,764,910 $ (29,377) 20 $ 174,593 $ (6,262) 172 $ 1,939,503 $ (35,639) __________________________________ * 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)	9 Months Ended
	Sep. 30, 2022
Receivables [Abstract]
Summary of Loans Receivable by Major Category	The following is a summary of loans receivable by major category: September 30, 2022 December 31, 2021 (Dollars in thousands) Loan portfolio composition Real estate loans: Residential $ 75,488 $ 69,199 Commercial 9,216,194 8,816,080 Construction 213,211 220,652 Total real estate loans 9,504,893 9,105,931 Commercial business * 5,124,421 4,208,674 Residential mortgage 823,809 579,626 Consumer and other 38,064 58,512 Loans receivable 15,491,187 13,952,743 Allowance for credit losses (160,561) (140,550) Loans receivable, net of allowance for credit losses $ 15,330,626 $ 13,812,193 __________________________________ * Commercial business loans as of September 30, 2022 and December 31, 2021 include $5.9 million and $228.1 million, respectively, in SBA Paycheck Protection Program loans
Allowance for Credit Losses by Portfolio Segment	The tables below detail the activity in the allowance for credit losses (“ACL”) by portfolio segment for the three and nine months ended September 30, 2022 and 2021. Recoveries for the nine months ended September 30, 2022 included $17.3 million in recoveries from a single lending relationship that had $29.6 million in charge-offs in the third quarter of 2021. Real Estate Commercial Business Residential Mortgage Consumer and Other Total (Dollars in thousands) Three Months Ended September 30, 2022 Balance, beginning of period $ 99,824 $ 44,852 $ 6,079 $ 825 $ 151,580 Provision (credit) for credit losses 109 8,276 837 (22) 9,200 Loans charged off (185) (262) (22) (81) (550) Recoveries of charge offs 176 147 — 8 331 Balance, end of period $ 99,924 $ 53,013 $ 6,894 $ 730 $ 160,561 Nine Months Ended September 30, 2022 Balance, beginning of period $ 108,440 $ 27,811 $ 3,316 $ 983 $ 140,550 Provision (credit) for credit losses (25,433) 23,327 3,600 (94) 1,400 Loans charged off (1,936) (611) (22) (196) (2,765) Recoveries of charge offs 18,853 2,486 — 37 21,376 Balance, end of period $ 99,924 $ 53,013 $ 6,894 $ 730 $ 160,561 Real Estate Commercial Business Residential Mortgage Consumer and Other Total (Dollars in thousands) Three Months Ended September 30, 2021 Balance, beginning of period $ 155,253 $ 29,500 $ 3,612 $ 1,087 $ 189,452 Provision (credit) for credit losses (9,142) (1,011) — 153 (10,000) Loans charged off (41,655) (1,895) (923) (110) (44,583) Recoveries of charge offs 1,113 778 — 14 1,905 Balance, end of period $ 105,569 $ 27,372 $ 2,689 $ 1,144 $ 136,774 Nine Months Ended September 30, 2021 Balance, beginning of period $ 162,196 $ 39,155 $ 4,227 $ 1,163 $ 206,741 Provision (credit) for credit losses (2,570) (10,565) (615) 50 (13,700) Loans charged off (56,645) (3,077) (923) (251) (60,896) Recoveries of charge offs 2,588 1,859 — 182 4,629 Balance, end of period $ 105,569 $ 27,372 $ 2,689 $ 1,144 $ 136,774 The following tables break out the allowance for credit losses and loan balance by measurement methodology at September 30, 2022 and December 31, 2021: September 30, 2022 Real Estate Commercial Business Residential Mortgage Consumer and Other Total (Dollars in thousands) Allowance for credit losses: Individually evaluated $ 2,956 $ 4,207 $ 15 $ 21 $ 7,199 Collectively evaluated 96,968 48,806 6,879 709 153,362 Total $ 99,924 $ 53,013 $ 6,894 $ 730 $ 160,561 Loans outstanding: Individually evaluated $ 62,936 $ 17,553 $ 8,731 $ 429 $ 89,649 Collectively evaluated 9,441,957 5,106,868 815,078 37,635 15,401,538 Total $ 9,504,893 $ 5,124,421 $ 823,809 $ 38,064 $ 15,491,187 December 31, 2021 Real Estate Commercial Business Residential Mortgage Consumer and Other Total (Dollars in thousands) Allowance for credit losses: Individually evaluated $ 2,025 $ 3,056 $ 11 $ 23 $ 5,115 Collectively evaluated 106,415 24,755 3,305 960 135,435 Total $ 108,440 $ 27,811 $ 3,316 $ 983 $ 140,550 Loans outstanding: Individually evaluated $ 83,347 $ 19,407 $ 3,470 $ 409 $ 106,633 Collectively evaluated 9,022,584 4,189,267 576,156 58,103 13,846,110 Total $ 9,105,931 $ 4,208,674 $ 579,626 $ 58,512 $ 13,952,743 The following tables present a breakdown of loans by recorded ACL, broken out by loans evaluated individually and collectively at September 30, 2022 and December 31, 2021: September 30, 2022 Real Estate – Real Estate – Real Estate – Commercial Residential Consumer Total (Dollars in thousands) Individually evaluated loans $ — $ 62,936 $ — $ 17,553 $ 8,731 $ 429 $ 89,649 ACL on individually evaluated loans $ — $ 2,956 $ — $ 4,207 $ 15 $ 21 $ 7,199 Individually evaluated loans ACL coverage N/A 4.70 % N/A 23.97 % 0.17 % 4.90 % 8.03 % Collectively evaluated loans $ 75,488 $ 9,153,258 $ 213,211 $ 5,106,868 $ 815,078 $ 37,635 $ 15,401,538 ACL on collectively evaluated loans $ 850 $ 94,579 $ 1,539 $ 48,806 $ 6,879 $ 709 $ 153,362 Collectively evaluated loans ACL coverage 1.13 % 1.03 % 0.72 % 0.96 % 0.84 % 1.88 % 1.00 % Total loans $ 75,488 $ 9,216,194 $ 213,211 $ 5,124,421 $ 823,809 $ 38,064 $ 15,491,187 Total ACL $ 850 $ 97,535 $ 1,539 $ 53,013 $ 6,894 $ 730 $ 160,561 Total ACL to total loans 1.13 % 1.06 % 0.72 % 1.03 % 0.84 % 1.92 % 1.04 % December 31, 2021 Real Estate – Real Estate – Real Estate – Commercial Residential Consumer Total (Dollars in thousands) Individually evaluated loans $ — $ 83,347 $ — $ 19,407 $ 3,470 $ 409 $ 106,633 ACL on individually evaluated loans $ — $ 2,025 $ — $ 3,056 $ 11 $ 23 $ 5,115 Individually evaluated loans ACL coverage N/A 2.43 % N/A 15.75 % 0.32 % 5.62 % 4.80 % Collectively evaluated loans $ 69,199 $ 8,732,733 $ 220,652 $ 4,189,267 $ 576,156 $ 58,103 $ 13,846,110 ACL on collectively evaluated loans $ 729 $ 104,145 $ 1,541 $ 24,755 $ 3,305 $ 960 $ 135,435 Collectively evaluated loans ACL coverage 1.05 % 1.19 % 0.70 % 0.59 % 0.57 % 1.65 % 0.98 % Total loans $ 69,199 $ 8,816,080 $ 220,652 $ 4,208,674 $ 579,626 $ 58,512 $ 13,952,743 Total ACL $ 729 $ 106,170 $ 1,541 $ 27,811 $ 3,316 $ 983 $ 140,550 Total ACL to total loans 1.05 % 1.20 % 0.70 % 0.66 % 0.57 % 1.68 % 1.01 %
Schedule of Nonaccrual Loans and Loans Past Due 90 or More Days And Still on Accrual Status	The tables below represent the amortized cost 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 a recorded ACL and those without a recorded ACL as of September 30, 2022 and December 31, 2021. September 30, 2022 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 20,546 4,687 25,233 — Hotel & motel 5,815 4,062 9,877 4,618 Gas station & car wash 2,847 1,011 3,858 — Mixed use 781 3,258 4,039 — Industrial & warehouse 129 919 1,048 — Other 1,830 1,922 3,752 — Real estate – construction — — — — Commercial business 1,625 6,050 7,675 419 Residential mortgage 5,967 2,764 8,731 — Consumer and other — 358 358 269 Total $ 39,540 $ 25,031 $ 64,571 $ 5,306 December 31, 2021 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 7,586 2,604 10,190 — Hotel & motel 5,471 6,564 12,035 — Gas station & car wash 575 1,267 1,842 — Mixed use 5,307 1,412 6,719 — Industrial & warehouse 687 1,897 2,584 — Other 1,233 5,153 6,386 215 Real estate – construction — — — — Commercial business 4,726 6,299 11,025 1,494 Residential mortgage 275 3,195 3,470 — Consumer and other — 365 365 422 Total $ 25,860 $ 28,756 $ 54,616 $ 2,131 __________________________________
Amortized Cost Basis of Collateral-Dependent Loans	The following table presents the amortized cost of collateral dependent loans as of September 30, 2022 and December 31, 2021: September 30, 2022 December 31, 2021 Real Estate Collateral Other Collateral Total Real Estate Collateral Other Collateral Total (Dollars in thousands) Real estate – residential $ — $ — $ — $ — $ — $ — Real estate – commercial 47,272 — 47,272 65,590 — 65,590 Real estate – construction — — — — — — Commercial business 1,626 5,795 7,421 1,767 6,615 8,382 Residential mortgage 5,967 — 5,967 — — — Consumer and other — — — — — — Total $ 54,865 $ 5,795 $ 60,660 $ 67,357 $ 6,615 $ 73,972
Aging of Past Due Loans	The following table presents the amortized cost of past due loans, including nonaccrual loans past due 30 or more days, by the number of days past due as of September 30, 2022 and December 31, 2021 by class of loans: September 30, 2022 December 31, 2021 30-59 Days 60-89 Days 90 or More Days Total 30-59 Days 60-89 Days 90 or More Days Total (Dollars in thousands) Real estate – residential $ — $ — $ — $ — $ — $ — $ — $ — Real estate – commercial Retail 5,086 — 5,412 10,498 1,250 927 9,167 11,344 Hotel & motel 222 4,708 8,456 13,386 9,320 4,148 4,760 18,228 Gas station & car wash — — 1,093 1,093 575 — 832 1,407 Mixed use — — 3,659 3,659 1,124 — 5,625 6,749 Industrial & warehouse 32 86 408 526 247 — 785 1,032 Other — 236 2,021 2,257 1,198 6,522 3,185 10,905 Real estate – construction — — — — — — — — Commercial business 6,070 958 3,132 10,160 1,792 2,362 6,482 10,636 Residential mortgage 1,764 241 4,795 6,800 14,177 — 3,099 17,276 Consumer and other 273 46 627 946 59 21 787 867 Total Past Due $ 13,447 $ 6,275 $ 29,603 $ 49,325 $ 29,742 $ 13,980 $ 34,722 $ 78,444
Financing Receivable Credit Quality Indicators	The following table presents the amortized cost basis of loans receivable by class, credit quality indicator, and year of origination as of September 30, 2022 and December 31, 2021. September 30, 2022 Term Loan by Origination Year Revolving Loans Total 2022 2021 2020 2019 2018 Prior (Dollars in thousands) Real Estate - Residential Pass / not rated $ 14,306 $ 25,324 $ 9,743 $ 9,085 $ 3,990 $ 7,146 $ 4,670 $ 74,264 Special mention — — — — — — — — Substandard — — — — 662 562 — 1,224 Doubtful / loss — — — — — — — — Subtotal $ 14,306 $ 25,324 $ 9,743 $ 9,085 $ 4,652 $ 7,708 $ 4,670 $ 75,488 Real Estate - Commercial Pass / not rated $ 2,083,073 $ 2,195,049 $ 1,328,885 $ 1,055,329 $ 1,039,822 $ 1,272,491 $ 93,323 $ 9,067,972 Special mention — 11,640 1,714 — 4,529 3,871 202 21,956 Substandard 1,017 8,716 2,737 19,041 21,684 72,794 277 126,266 Doubtful / loss — — — — — — — — Subtotal $ 2,084,090 $ 2,215,405 $ 1,333,336 $ 1,074,370 $ 1,066,035 $ 1,349,156 $ 93,802 $ 9,216,194 Real Estate - Construction Pass / not rated $ 1,435 $ 38,964 $ 62,814 $ 35,424 $ 8,053 $ 4,607 $ 89 $ 151,386 Special mention — — — — — 16,144 — 16,144 Substandard 45,681 — — — — — — 45,681 Doubtful / loss — — — — — — — — Subtotal $ 47,116 $ 38,964 $ 62,814 $ 35,424 $ 8,053 $ 20,751 $ 89 $ 213,211 Commercial Business Pass / not rated $ 1,920,005 $ 1,214,335 $ 327,471 $ 351,613 $ 74,395 $ 103,832 $ 1,069,033 $ 5,060,684 Special mention — 20,390 13,621 119 2,099 485 4,585 41,299 Substandard 252 3,214 6,324 2,229 1,206 5,268 3,945 22,438 Doubtful / loss — — — — — — — — Subtotal $ 1,920,257 $ 1,237,939 $ 347,416 $ 353,961 $ 77,700 $ 109,585 $ 1,077,563 $ 5,124,421 Residential Mortgage Pass / not rated $ 346,195 $ 289,014 $ 1,395 $ 34,293 $ 65,713 $ 78,468 $ — $ 815,078 Special mention — — — — — — — — Substandard — — — 107 387 8,237 — 8,731 Doubtful / loss — — — — — — — — Subtotal $ 346,195 $ 289,014 $ 1,395 $ 34,400 $ 66,100 $ 86,705 $ — $ 823,809 Consumer and Other Pass / not rated $ 2,837 $ 1,047 $ 3,816 $ 1,355 $ 1,185 $ 7,026 $ 20,425 $ 37,691 Special mention — — — — — — — — Substandard — — — — — 373 — 373 Doubtful / loss — — — — — — — — Subtotal $ 2,837 $ 1,047 $ 3,816 $ 1,355 $ 1,185 $ 7,399 $ 20,425 $ 38,064 Total Loans Pass / not rated $ 4,367,851 $ 3,763,733 $ 1,734,124 $ 1,487,099 $ 1,193,158 $ 1,473,570 $ 1,187,540 $ 15,207,075 Special mention — 32,030 15,335 119 6,628 20,500 4,787 79,399 Substandard 46,950 11,930 9,061 21,377 23,939 87,234 4,222 204,713 Doubtful / loss — — — — — — — — Total $ 4,414,801 $ 3,807,693 $ 1,758,520 $ 1,508,595 $ 1,223,725 $ 1,581,304 $ 1,196,549 $ 15,491,187 December 31, 2021 Term Loan by Origination Year Revolving Loans Total 2021 2020 2019 2018 2017 Prior (Dollars in thousands) Real Estate - Residential Pass / not rated $ 26,093 $ 10,471 $ 11,442 $ 4,952 $ 2,987 $ 7,260 $ 4,403 $ 67,608 Special mention — — — 534 — 924 — 1,458 Substandard — — — 133 — — — 133 Doubtful / loss — — — — — — — — Subtotal $ 26,093 $ 10,471 $ 11,442 $ 5,619 $ 2,987 $ 8,184 $ 4,403 $ 69,199 Real Estate - Commercial Pass / not rated $ 2,451,662 $ 1,415,909 $ 1,252,851 $ 1,238,425 $ 883,790 $ 1,086,182 $ 89,501 $ 8,418,320 Special mention 5,553 8,882 39,567 20,203 27,204 73,090 5,970 180,469 Substandard 7,436 7,718 17,533 25,330 53,000 105,995 279 217,291 Doubtful / loss — — — — — — — — Subtotal $ 2,464,651 $ 1,432,509 $ 1,309,951 $ 1,283,958 $ 963,994 $ 1,265,267 $ 95,750 $ 8,816,080 Real Estate - Construction Pass / not rated $ 16,545 $ 67,628 $ 32,044 $ 32,908 $ 8,292 $ 5,685 $ 89 $ 163,191 Special mention — — — 45,996 5,074 6,391 — 57,461 Substandard — — — — — — — — Doubtful / loss — — — — — — — — Subtotal $ 16,545 $ 67,628 $ 32,044 $ 78,904 $ 13,366 $ 12,076 $ 89 $ 220,652 Commercial Business Pass / not rated $ 1,755,104 $ 431,145 $ 461,460 $ 98,812 $ 53,629 $ 70,294 $ 1,299,372 $ 4,169,816 Special mention 1,379 523 4,780 2,897 550 5,083 2,594 17,806 Substandard 3,796 941 2,308 1,651 3,803 3,461 5,092 21,052 Doubtful / loss — — — — — — — — Subtotal $ 1,760,279 $ 432,609 $ 468,548 $ 103,360 $ 57,982 $ 78,838 $ 1,307,058 $ 4,208,674 Residential Mortgage Pass / not rated $ 282,191 $ 1,420 $ 40,377 $ 112,743 $ 85,446 $ 53,979 $ — $ 576,156 Special mention — — — — — — — — Substandard 275 — 128 394 541 2,132 — 3,470 Doubtful / loss — — — — — — — — Subtotal $ 282,466 $ 1,420 $ 40,505 $ 113,137 $ 85,987 $ 56,111 $ — $ 579,626 Consumer and Other Pass / not rated $ 19,203 $ 5,347 $ 1,783 $ 1,699 $ 1,769 $ 6,165 $ 22,095 $ 58,061 Special mention — — — — — — — — Substandard — — — — — 451 — 451 Doubtful / loss — — — — — — — — Subtotal $ 19,203 $ 5,347 $ 1,783 $ 1,699 $ 1,769 $ 6,616 $ 22,095 $ 58,512 Total Loans Pass / not rated $ 4,550,798 $ 1,931,920 $ 1,799,957 $ 1,489,539 $ 1,035,913 $ 1,229,565 $ 1,415,460 $ 13,453,152 Special mention 6,932 9,405 44,347 69,630 32,828 85,488 8,564 257,194 Substandard 11,507 8,659 19,969 27,508 57,344 112,039 5,371 242,397 Doubtful / loss — — — — — — — — Total $ 4,569,237 $ 1,949,984 $ 1,864,273 $ 1,586,677 $ 1,126,085 $ 1,427,092 $ 1,429,395 $ 13,952,743
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 and nine months ended September 30, 2022 and 2021 is presented in the following table: Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 Transfer of loans held for investment to held for sale (Dollars in thousands) Real estate - commercial $ 36,704 $ 107,191 $ 192,190 $ 278,366 Commercial business 10,328 78,990 27,097 88,650 Residential mortgage — 7,018 — 7,018 Total $ 47,032 $ 193,199 $ 219,287 $ 374,034
Troubled Debt Restructurings	A summary of the amortized cost of TDR loans on accrual and nonaccrual status by type of concession as of September 30, 2022 and December 31, 2021 is presented below: September 30, 2022 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 $ 5,410 $ 532 $ — $ 15 $ 23,369 $ 267 $ — $ — $ 29,593 Maturity / amortization concession 4,979 9,193 — 257 113 2,572 — 114 17,228 Rate concession 5,062 196 — — 100 1,401 — — 6,759 Total $ 15,451 $ 9,921 $ — $ 272 $ 23,582 $ 4,240 $ — $ 114 $ 53,580 December 31, 2021 TDR Loans on Accrual Status TDR Loans on Nonaccrual Status Total Real Estate Commercial Business Residential Mortgage Other Real Estate Commercial Business Residential Mortgage Other (Dollars in thousands) Payment concession $ 23,196 $ 790 $ — $ 16 $ 7,533 $ 420 $ — $ — $ 31,955 Maturity / amortization concession 15,449 7,284 — 183 269 3,109 — 117 26,411 Rate concession 5,161 339 — — 234 1,413 — — 7,147 Total $ 43,806 $ 8,413 $ — $ 199 $ 8,036 $ 4,942 $ — $ 117 $ 65,513 The following tables present the amortized cost of loans classified as TDR during the nine months ended September 30, 2022 and 2021 by class of loans. There were no loans classified as TDR during the three months ended September 30, 2022 and 2021. Nine Months Ended September 30, 2022 Nine Months Ended September 30, 2021 Number of Loans Balance Number of Loans Balance (Dollars in thousands) Real estate – residential — $ — — $ — Real estate – commercial Retail — — 4 6,922 Hotel & motel 1 1,985 — — Gas station & car wash — — 1 575 Mixed use — — 1 4,626 Industrial & warehouse — — — — Other 1 590 — — Real estate – construction — — — — Commercial business 1 2,885 3 319 Residential mortgage — — — — Consumer and other — — 5 53 Total 3 $ 5,460 14 $ 12,495
Summary of Troubled Debt Restructurings with Subsequent Payment Default	The following tables present the amortized cost balance of loans modified as TDRs within the previous twelve months ended September 30, 2022 and 2021 that subsequently had payment defaults during the three and nine months ended September 30, 2022 and 2021: Three Months Ended September 30, 2022 Three Months Ended September 30, 2021 Number of Loans Balance Number of Loans Balance (Dollars in thousands) Real estate – residential — $ — — $ — Real estate – commercial Retail — — 4 6,988 Hotel & motel — — — — Gas station & car wash — — — — Mixed Use — — 1 4,626 Industrial & warehouse — — — — Other — — — — Real estate – construction — — — — Commercial business 1 2,885 — — Residential mortgage — — — — Consumer and other — — 3 30 Total 1 $ 2,885 8 $ 11,644 Nine Months Ended September 30, 2022 Nine Months Ended September 30, 2021 Number of Loans Balance Number of Loans Balance (Dollars in thousands) Real estate – residential — $ — — $ — Real estate – commercial Retail 1 1,144 4 6,988 Hotel & motel — — — — Gas station & car wash — — — — Mixed Use — — 1 4,626 Industrial & warehouse — — — — Other — — — — Real estate – construction — — — — Commercial business 1 2,885 1 120 Residential mortgage — — — — Consumer and other — — 4 41 Total 2 $ 4,029 10 $ 11,775
interest income reversal, nonaccrual, by loan segment	The following table presents interest income reversals, due to loans being placed on nonaccrual status, by loan segment for the three and nine months ended September 30, 2022 and 2021: Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 (Dollars in thousands) Real estate $ 154 $ 1,071 $ 1,406 $ 2,761 Commercial business 21 12 47 49 Residential mortgage 153 — 292 (4) Consumer and other — — — — Total $ 328 $ 1,083 $ 1,745 $ 2,806

Leases (Tables)

Leases (Tables)	9 Months Ended
	Sep. 30, 2022
Leases [Abstract]
Summary of Net Lease Cost and Other Information	The table below summarizes the Company’s net lease cost: Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 (Dollars in thousands) Operating lease cost $ 3,796 $ 3,778 $ 11,623 $ 11,498 Short term lease cost — — — — Variable lease cost 855 892 2,434 2,393 Sublease income (104) (102) (312) (354) Net lease cost $ 4,547 $ 4,568 $ 13,745 $ 13,537 The table below summarizes other information related to the Company’s operating leases: At or for the Nine Months Ended At or for the Nine Months Ended (Dollars in thousands) Cash paid for amounts included in the measurement of lease liabilities: Operating cash outflows for operating leases $ 11,954 $ 10,991 Right-of-use assets obtained in exchange for lease liabilities, net 13,698 965 Weighted-average remaining lease term - operating leases 4.7 years 5.4 years Weighted-average discount rate - operating leases 2.31 % 2.56 %
Summary of Maturity of Remaining Lease Liabilities	The table below summarizes the maturity of remaining lease liabilities: September 30, 2022 (Dollars in thousands) 2022 $ 3,838 2023 14,533 2024 13,431 2025 11,680 2026 10,973 2027 and thereafter 8,666 Total lease payments 63,121 Less: imputed interest 3,787 Total lease obligations $ 59,334

Financial Services, Banking and

Financial Services, Banking and Thrift (Tables)	9 Months Ended
	Sep. 30, 2022
Deposits [Abstract]
Schedule of Deposits	The following is a breakdown of the Company’s deposits at September 30, 2022 and December 31, 2021: September 30, 2022 December 31, 2021 Balance Percentage (%) Balance Percentage (%) (Dollars in thousands) Noninterest bearing demand deposits $ 5,590,952 36 % $ 5,751,870 38 % Money market and NOW accounts 5,885,093 38 % 6,178,850 41 % Saving deposits 317,841 2 % 321,377 2 % Time deposits 3,708,323 24 % 2,788,353 19 % Total deposits $ 15,502,209 100 % $ 15,040,450 100 %

Subordinated Debentures and C_2

Subordinated Debentures and Convertible Notes (Tables)	9 Months Ended
	Sep. 30, 2022
Subordinated Borrowings [Abstract]
Summary of Trust Preferred Securities and Debentures	The following table is a summary of trust preferred securities and Debentures at September 30, 2022: Issuance Trust Issuance Date Trust Preferred Security Amount Carrying Value of Debentures Rate Type Current Rate Maturity Date (Dollars in thousands) Nara Capital Trust III 06/05/2003 $ 5,000 $ 5,155 Variable 6.443% 06/15/2033 Nara Statutory Trust IV 12/22/2003 5,000 5,155 Variable 5.362% 01/07/2034 Nara Statutory Trust V 12/17/2003 10,000 10,310 Variable 6.477% 12/17/2033 Nara Statutory Trust VI 03/22/2007 8,000 8,248 Variable 4.943% 06/15/2037 Center Capital Trust I 12/30/2003 18,000 14,874 Variable 5.362% 01/07/2034 Wilshire Trust II 03/17/2005 20,000 16,375 Variable 5.317% 03/17/2035 Wilshire Trust III 09/15/2005 15,000 11,671 Variable 4.693% 09/15/2035 Wilshire Trust IV 07/10/2007 25,000 18,856 Variable 4.673% 09/15/2037 Saehan Capital Trust I 03/30/2007 20,000 15,614 Variable 5.294% 06/30/2037 Total $ 126,000 $ 106,258
Convertible Debt	The value of the convertible notes at issuance and the carrying value as of September 30, 2022 and December 31, 2021 are presented in the tables below: September 30, 2022 Capitalization Gross Total Capitalization Carrying Amount (Dollars in thousands) Convertible notes principal balance $ 217,500 $ 217,500 Issuance costs to be capitalized 5 years (4,119) $ 3,532 (587) Carrying balance of convertible notes $ 213,381 $ 3,532 $ 216,913 December 31, 2021 Capitalization Gross Total Capitalization Carrying Amount (Dollars in thousands) Convertible notes principal balance $ 217,500 $ 217,500 Issuance costs to be capitalized 5 years (4,119) $ 2,828 (1,291) Carrying balance of convertible notes $ 213,381 $ 2,828 $ 216,209

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2022
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Interest Rate Swaps Related to Hedging Program	At September 30, 2022 and December 31, 2021, interest rate swaps related to the Company’s loan hedging program that were outstanding are presented in the following table: September 30, 2022 December 31, 2021 (Dollars in thousands) Interest rate swaps on loans with correspondent banks (included in other assets) Notional amount $ 988,492 $ 148,199 Weighted average remaining term (years) 5.2 7.2 Pay fixed rate (weighted average) 2.73 % 2.92 % Received variable rate (weighted average) 3.94 % 2.08 % Estimated fair value $ 74,803 $ 3,001 Interest rate swaps on loans with correspondent banks (included in other liabilities) Notional amount $ 15,969 $ 440,486 Weighted average remaining term (years) 10.0 6.1 Pay fixed rate (weighted average) 5.46 % 4.03 % Received variable rate (weighted average) 4.56 % 2.20 % Estimated fair value $ (50) $ (14,906) Back to back interest rate swaps with loan customers (included in other liabilities) Notional amount $ 988,492 $ 148,199 Weighted average remaining term (years) 5.2 7.2 Received fixed rate (weighted average) 2.73 % 2.92 % Pay variable rate (weighted average) 3.94 % 2.08 % Estimated fair value $ (74,803) $ (3,001) Back to back interest rate swaps with loan customers (included in other assets) Notional amount $ 15,969 $ 440,486 Weighted average remaining term (years) 10.0 6.1 Received fixed rate (weighted average) 5.46 % 4.03 % Pay variable rate (weighted average) 4.56 % 2.20 % Estimated fair value $ 50 $ 14,906
Schedule of Derivative Instruments	September 30, 2022 December 31, 2021 (Dollars in thousands) Interest rate swaps designated as cash flow hedge (included in other assets) Notional amount $ 100,000 $ 100,000 Weighted average remaining term (years) 2.5 3.3 Received variable rate (weighted average) 2.74 % 0.12 % Pay fixed rate (weighted average) 0.49 % 0.49 % Estimated fair value $ 9,161 $ 2,291 The following table reflects the notional amount and fair value of mortgage banking derivatives for the dates indicated: September 30, 2022 December 31, 2021 Notional Amount Fair Value Notional Amount Fair Value (Dollars in thousands) Assets: Interest rate lock commitments $ 468 $ 1 $ 16,518 $ 230 Forward sale contracts related to mortgage banking 1,000 41 6,392 17 Liabilities: Interest rate lock commitments $ 1,220 $ (39) $ 907 $ (2) Forward sale contracts related to mortgage banking 500 (3) 25,305 (74)

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2022
Commitments and Contingencies Disclosure [Abstract]
Commitments	Commitments at September 30, 2022 and December 31, 2021 are summarized as follows: September 30, 2022 December 31, 2021 (Dollars in thousands) Commitments to extend credit $ 2,787,710 $ 2,329,421 Standby letters of credit 135,056 126,137 Other letters of credit 26,937 56,333 Commitments to fund investments in affordable housing partnerships 12,399 9,514

Goodwill, Intangible Assets, _2

Goodwill, Intangible Assets, and Servicing Assets (Tables)	9 Months Ended
	Sep. 30, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Finite-Lived Intangible Assets	The following table provides information regarding the core deposit intangibles at September 30, 2022 and December 31, 2021: September 30, 2022 December 31, 2021 Core Deposit Intangibles Related To: Amortization Period Gross Accumulated Carrying Amount Accumulated Carrying Amount (Dollars in thousands) Foster Bankshares acquisition 10 years $ 2,763 $ (2,627) $ 136 $ (2,504) $ 259 Wilshire Bancorp acquisition 10 years 18,138 (12,062) 6,076 (10,726) 7,412 Total $ 20,901 $ (14,689) $ 6,212 $ (13,230) $ 7,671
Schedule of Servicing Assets	The changes in servicing assets for the three and nine months ended September 30, 2022 and 2021 were as follows: Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 (Dollars in thousands) Balance at beginning of period $ 11,215 $ 11,566 $ 10,418 $ 12,692 Additions through originations of servicing assets 1,338 710 4,228 2,039 Amortization (952) (1,489) (3,045) (3,944) Balance at end of period $ 11,601 $ 10,787 $ 11,601 $ 10,787
Summary of Fair Value Inputs	The inputs used in evaluating servicing assets for impairment at September 30, 2022 and December 31, 2021 are presented below. September 30, 2022 December 31, 2021 SBA Servicing Assets: Weighted-average discount rate 9.67% 11.20% Constant prepayment rate 12.05% 14.64% Mortgage Servicing Assets: Weighted-average discount rate 11.88% 8.63% Constant prepayment rate 9.63% 9.58%

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2022
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 September 30, 2022 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. Treasury securities $ 3,889 $ 3,889 $ — $ — U.S. Government agency and U.S. Government sponsored enterprises: Agency securities 3,875 — 3,875 — Collateralized mortgage obligations 824,327 — 824,327 — Mortgage-backed securities: Residential 456,590 — 456,590 — Commercial 379,615 — 379,615 — Asset-backed securities 143,903 — 143,903 — Corporate securities 18,715 — 18,715 — Municipal securities 162,434 — 161,520 914 Equity investments with readily determinable fair value 4,294 4,294 — — Interest rate swaps 74,853 — 74,853 — Mortgage banking derivatives 42 — 42 — Other derivatives 27,343 — 27,343 — Liabilities: Interest rate swaps 74,853 — 74,853 — Mortgage banking derivatives 42 — 42 — Other derivatives 163 — 143 20 Fair Value Measurements at the End of December 31, 2021 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 $ 1,026,430 $ — $ 1,026,430 $ — Mortgage-backed securities: Residential 759,224 — 759,224 — Commercial 599,402 — 599,402 — Asset-backed securities 153,451 — 153,451 — Corporate securities 22,484 — 22,484 — Municipal securities 105,284 — 104,246 1,038 Equity investments with readily determinable fair value 26,823 26,823 — — Interest rate swaps 17,907 — 17,907 — Mortgage banking derivatives 247 — 247 — Other derivatives 2,291 — 2,291 — Liabilities: Interest rate swaps 17,907 — 17,907 — Mortgage banking derivatives 76 — 76 — Other derivatives 93 — — 93
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation	The table below presents a reconciliation and income statement classification of gains (losses) for the municipal security and risk participation agreements measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the three and nine months ended September 30, 2022 and 2021: Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 (Dollars in thousands) Municipal securities: Beginning Balance $ 1,019 $ 1,058 $ 1,038 $ 1,022 Change in fair value included in other comprehensive income (loss) (105) (3) (124) 33 Ending Balance $ 914 $ 1,055 $ 914 $ 1,055 Risk participation agreements: Beginning Balance $ 31 $ 64 $ 93 $ 398 Change in fair value included in income (expense) (11) (12) (73) (346) Ending Balance $ 20 $ 52 $ 20 $ 52
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 September 30, 2022 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 $ 6,368 $ — $ — $ 6,368 Commercial business 5,794 — — 5,794 OREO 1,050 — — 1,050 Fair Value Measurements at the End of December 31, 2021 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 $ 12,293 $ — $ — $ 12,293 Commercial business 3,656 — — 3,656 Loans held for sale, net 26,154 — 26,154 — OREO 2,167 — — 2,167 For assets measured at fair value on a non-recurring basis, the total net losses, which include charge offs, recoveries, recorded ACL, valuations, and recognized gains and losses on sales are summarized below: For the Three Months Ended September 30, For the Nine Months Ended September 30, 2022 2021 2022 2021 (Dollars in thousands) Assets: Collateral dependent loans at fair value: Real estate loans $ (962) $ (1,083) $ (1,573) $ (1,496) Commercial business (3,323) (2,025) (3,323) (2,025) Loans held for sale, net — (6,121) — (17,900) OREO (337) (259) (593) (582)
Carrying Amounts and Estimated Fair Values of Financial Instruments	Carrying amounts and estimated fair values of financial instruments, not previously presented, at September 30, 2022 and December 31, 2021 were as follows: September 30, 2022 Carrying Amount Estimated Fair Value Fair Value Measurement (Dollars in thousands) Financial Assets: Cash and cash equivalents $ 331,336 $ 331,336 Level 1 Interest bearing deposits in other financial institutions 3,968 3,945 Level 2 Investment securities HTM 271,185 258,677 Level 2 Equity investments without readily determinable fair values 38,030 38,030 Level 2 Loans held for sale 41,989 43,973 Level 2 Loans receivable, net 15,330,626 14,937,811 Level 3 Accrued interest receivable 42,363 42,363 Level 2/3 Servicing assets, net 11,601 16,650 Level 3 Customers’ liabilities on acceptances 570 570 Level 2 Financial Liabilities: Noninterest bearing deposits $ 5,590,952 $ 5,590,952 Level 2 Saving and other interest bearing demand deposits 6,202,934 6,202,934 Level 2 Time deposits 3,708,323 3,706,939 Level 2 FHLB and FRB borrowings 1,072,000 1,072,080 Level 2 Convertible notes, net 216,913 211,562 Level 1 Subordinated debentures 106,258 107,870 Level 2 Accrued interest payable 11,713 11,713 Level 2 Acceptances outstanding 570 570 Level 2 December 31, 2021 Carrying Amount Estimated Fair Value Fair Value Measurement (Dollars in thousands) Financial Assets: Cash and cash equivalents $ 316,266 $ 316,266 Level 1 Interest bearing deposits in other financial institutions 12,851 12,853 Level 2 Equity investments without readily determinable fair values 31,037 31,037 Level 2 Loans held for sale 99,049 103,767 Level 2 Loans receivable, net 13,812,193 13,698,579 Level 3 Accrued interest receivable 41,842 41,842 Level 2/3 Servicing assets, net 10,418 13,500 Level 3 Customers’ liabilities on acceptances 1,521 1,521 Level 2 Financial Liabilities: Noninterest bearing deposits $ 5,751,870 $ 5,751,870 Level 2 Saving and other interest bearing demand deposits 6,500,227 6,500,227 Level 2 Time deposits 2,788,353 2,790,596 Level 2 FHLB advances 300,000 301,936 Level 2 Convertible notes, net 216,209 214,612 Level 1 Subordinated debentures 105,354 117,961 Level 2 Accrued interest payable 4,272 4,272 Level 2 Acceptances outstanding 1,521 1,521 Level 2

Stockholders_ Equity (Tables)

Stockholders’ Equity (Tables)	9 Months Ended
	Sep. 30, 2022
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	The following table presents the quarterly changes to accumulated other comprehensive income for the three and nine months ended September 30, 2022 and 2021: Three Months Ended, Nine Months Ended, September 30, 2022 September 30, 2021 September 30, 2022 September 30, 2021 (Dollars in thousands) Balance at beginning of period $ (171,707) $ 15,051 $ (11,412) $ 32,753 Unrealized net losses on securities available for sale (112,043) (16,433) (308,974) (43,050) Unrealized net losses on securities available for sale transferred to held to maturity — — (36,576) — Unrealized net gains on interest rate swaps used for cash flow hedge 18,893 120 24,901 1,643 Reclassification adjustments for net losses realized in net income 662 88 688 227 Tax effect 27,660 4,717 94,838 11,970 Other comprehensive loss, net of tax (64,828) (11,508) (225,123) (29,210) Balance at end of period $ (236,535) $ 3,543 $ (236,535) $ 3,543

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2022
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 nine months ended September 30, 2022: Number of Shares Weighted-Average Exercise Price Per Share Weighted-Average Aggregate Intrinsic Value (Dollars in thousands) Outstanding - January 1, 2022 814,877 $ 15.17 Granted — — Exercised (105,510) 5.02 Expired (20,000) 17.18 Forfeited — — Outstanding - September 30, 2022 689,367 $ 16.66 3.22 $ — Options exercisable - September 30, 2022 689,367 $ 16.66 3.22 $ —
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 nine months ended September 30, 2022: Number of Shares Weighted-Average Grant Date Fair Value Outstanding (unvested) - January 1, 2022 1,561,197 $ 12.08 Granted 981,558 15.93 Vested (616,521) 12.66 Forfeited (168,217) 13.50 Outstanding (unvested) - September 30, 2022 1,758,017 $ 13.89

Regulatory Matters (Tables)

Regulatory Matters (Tables)	9 Months Ended
	Sep. 30, 2022
Banking Regulation [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 tables below for the dates indicated and include the effects of the Company’s election to utilize the five-year transition described above: Actual Required For Capital Adequacy Purposes Minimum Capital Adequacy Required To Be Well Capitalized September 30, 2022 Amount Ratio Amount Ratio Amount Ratio Amount Ratio (Dollars in thousands) Common equity Tier 1 capital Company $ 1,760,843 10.32 % $ 767,941 4.50 % $ 1,194,575 7.00 % N/A N/A Bank $ 2,014,788 11.81 % $ 767,682 4.50 % $ 1,194,173 7.00 % $ 1,108,875 6.50 % Total capital Company $ 2,000,653 11.72 % $ 1,365,228 8.00 % $ 1,791,862 10.50 % N/A N/A Bank $ 2,152,241 12.62 % $ 1,364,769 8.00 % $ 1,791,259 10.50 % $ 1,705,961 10.00 % Tier 1 capital Company $ 1,863,200 10.92 % $ 1,023,921 6.00 % $ 1,450,555 8.50 % N/A N/A Bank $ 2,014,788 11.81 % $ 1,023,577 6.00 % $ 1,450,067 8.50 % $ 1,364,769 8.00 % Tier 1 capital Company $ 1,863,200 10.25 % $ 727,401 4.00 % N/A N/A N/A N/A Bank $ 2,014,788 11.08 % $ 727,200 4.00 % N/A N/A $ 909,000 5.00 % Actual Required For Capital Adequacy Purposes Minimum Capital Adequacy Required To Be Well Capitalized December 31, 2021 Amount Ratio Amount Ratio Amount Ratio Amount Ratio (Dollars in thousands) Common equity Tier 1 capital Company $ 1,657,754 11.03 % $ 676,633 4.50 % $ 1,052,540 7.00 % N/A N/A Bank $ 1,947,914 12.96 % $ 676,328 4.50 % $ 1,052,066 7.00 % $ 976,919 6.50 % Total capital Company $ 1,867,968 12.42 % $ 1,202,903 8.00 % $ 1,578,811 10.50 % N/A N/A Bank $ 2,056,675 13.68 % $ 1,202,361 8.00 % $ 1,578,099 10.50 % $ 1,502,952 10.00 % Tier 1 capital Company $ 1,759,207 11.70 % $ 902,178 6.00 % $ 1,278,085 8.50 % N/A N/A Bank $ 1,947,914 12.96 % $ 901,771 6.00 % $ 1,277,509 8.50 % $ 1,202,361 8.00 % Tier 1 capital Company $ 1,759,207 10.11 % $ 695,795 4.00 % N/A N/A N/A N/A Bank $ 1,947,914 11.20 % $ 695,593 4.00 % N/A N/A $ 869,491 5.00 %

Revenue Recognition (Tables)

Revenue Recognition (Tables)	9 Months Ended
	Sep. 30, 2022
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	Service charges on deposit accounts and wire transfers are summarized below: Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 (Dollars in thousands) Noninterest bearing deposit account income: Monthly service charges $ 250 $ 259 $ 751 $ 808 Customer analysis charges 1,426 847 3,541 2,332 NSF charges 749 606 2,149 1,921 Other service charges 87 81 268 252 Total noninterest bearing deposit account income 2,512 1,793 6,709 5,313 Interest bearing deposit account income: Monthly service charges 23 21 70 68 Total service fees on deposit accounts $ 2,535 $ 1,814 $ 6,779 $ 5,381 Wire transfer fee income: Wire transfer fees $ 765 $ 766 $ 2,254 $ 2,256 Foreign exchange fees 91 70 360 347 Total wire transfer fees $ 856 $ 836 $ 2,614 $ 2,603

Basis of Presentation (Details)

Basis of Presentation (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Jun. 30, 2022	Sep. 30, 2022	Sep. 30, 2021
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Interest on other borrowings and convertible notes	$ 2,936	$ 2,290		$ 7,878	$ 6,892
Retained earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Convertible debt, cumulative effect on retained earnings before tax					$ 10,715
Retained earnings | Accounting Standards Update 2020-06 | Cumulative Effect, Period of Adoption, Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Convertible debt, cumulative effect on retained earnings before tax			$ 10,700

Earnings Per Share (Details)

Earnings Per Share (Details)		3 Months Ended		9 Months Ended
	Jun. 07, 2018	Sep. 30, 2022 USD ($) $ / shares shares	Sep. 30, 2021 USD ($) $ / shares shares	Sep. 30, 2022 USD ($) $ / shares shares	Sep. 30, 2021 USD ($) $ / shares shares	Jun. 06, 2018 USD ($)
Net Income (Numerator)
Basic EPS - common stock | $		$ 53,748,000	$ 55,499,000	$ 166,574,000	$ 152,949,000
Diluted EPS - common stock | $		$ 53,748,000	$ 55,499,000	$ 166,574,000	$ 152,949,000
Weighted-Average Shares (Denominator)
Basic EPS - common stock (in shares)		119,476,035	122,244,948	119,940,044	123,050,174
Effect of dilutive securities:
Stock options, restricted stock, and ESPP shares (in shares)		520,488	663,588	655,944	798,338
Diluted EPS - common stock (shares)		119,996,523	122,908,536	120,595,988	123,848,512
Earnings Per Share
Basic EPS - common stock (in dollars per share) | $ / shares		$ 0.45	$ 0.45	$ 1.39	$ 1.24
Diluted EPS - common stock (in dollars per share) | $ / shares		$ 0.45	$ 0.45	$ 1.38	$ 1.23
Convertible Notes
Antidilutive Securities Excluded from Computation of Earnings Per Share
Aggregate principal amount issued | $		$ 217,500,000		$ 217,500,000		$ 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		751,973	934,036	715,058	743,553

Equity Investments - Narrative

Equity Investments - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Net Investment Income [Line Items]
Equity investments with readily determinable fair value	$ 42,324		$ 42,324		$ 57,860
Proceeds from Sale of Equity Securities, FV-NI	20,600		20,600
Realized gain (loss) recorded on equity investments sold	375	$ 0	(1,354)	$ 0
Equity investments without readily determinable fair values	38,000		38,000		31,037
Equity investments without readily determinable fair values, impairment	0	$ 0	0	$ 0
Mutual funds
Net Investment Income [Line Items]
Equity investments with readily determinable fair value	4,300		4,300		26,800
Correspondent bank stock
Net Investment Income [Line Items]
Equity investments without readily determinable fair values	370		370		370
CDFI investments
Net Investment Income [Line Items]
Equity investments without readily determinable fair values	1,000		1,000		1,000
CRA investments
Net Investment Income [Line Items]
Equity investments without readily determinable fair values	$ 36,700		$ 36,700		$ 29,700

Equity Investments - Change in

Equity Investments - Change in Fair Value of Equity Investments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Investments, Debt and Equity Securities [Abstract]
Net change in fair value recorded during the period on equity investments with readily determinable fair value	$ 186	$ (127)	$ (1,926)	$ (534)
Less: Net change in fair value recorded on equity investments sold during the period	375	0	(1,354)	0
Net change in fair value on equity investments with readily determinable fair values held at the end of the period	$ (189)	$ (127)	$ (572)	$ (534)

Securities Available for Sale -

Securities Available for Sale - Summary of Securities Available for Sale (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 2,321,695,000		$ 2,321,695,000		$ 2,685,648,000
Gross Unrealized Gains	9,000		9,000		16,266,000
Gross Unrealized Losses	(328,356,000)		(328,356,000)		(35,639,000)
Fair Value	1,993,348,000		1,993,348,000		2,666,275,000
Debt Securities, Held-to-maturity, Fair Value	258,677,000		258,677,000		0
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	12,508,000		12,508,000
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain	0		0
Investment securities held to maturity, at amortized cost; fair value of $258,677 and $0 at September 30, 2022 and December 31, 2021, respectively	271,185,000		271,185,000		0
Fair value of debt securities transferred from available for sale to held to maturity	238,900,000
Debt Securities, Transfer from available for sale to held to maturity, amortized cost, before allowance for credit losses	275,500,000
Unrealized loss on debt securities transferred from available for sale to held to maturity	(36,600,000)
Net gains on sales of securities available for sale	0	$ 0	0	$ 0
Unrealized gains on securities available for sale net of taxes	(236,535,000)		(236,535,000)		(11,412,000)
Accrued interest receivable for investment securities available for sale	6,500,000		6,500,000		5,600,000
Debt Securities, Available For Sale and Held to Maturity, Restricted	369,500,000		369,500,000		362,200,000
Due within one year	2,616,000		2,616,000
Due within one year	2,565,000		2,565,000
Due within one year	0		0
Due within one year	0		0
Due after one year through five years	102,687,000		102,687,000
Due after one year through five years	95,593,000		95,593,000
Due after one year through five years	0		0
Due after one year through five years	0		0
Due after five years through ten years	159,709,000		159,709,000
Due after five years through ten years	143,728,000		143,728,000
Due after five years through ten years	36,906,000		36,906,000
Due after five years through ten years	35,677,000		35,677,000
Due after ten years	2,056,683,000		2,056,683,000
Due after ten years	1,751,462,000		1,751,462,000
Due after ten years	234,279,000		234,279,000
Due after ten years	223,000,000		223,000,000
Total	271,185,000		271,185,000
Total	258,677,000		258,677,000
Available-for-sale Securities
Debt Securities, Available-for-sale [Line Items]
Unrealized gains on securities available for sale net of taxes	(230,800,000)		(230,800,000)		(13,000,000)
Collateralized mortgage obligations
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	974,052,000		974,052,000		1,039,543,000
Gross Unrealized Gains	9,000		9,000		3,357,000
Gross Unrealized Losses	(149,734,000)		(149,734,000)		(16,470,000)
Fair Value	824,327,000		824,327,000		1,026,430,000
Mortgage-backed securities: Residential
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	555,997,000		555,997,000		769,113,000
Gross Unrealized Gains	0		0		1,985,000
Gross Unrealized Losses	(99,407,000)		(99,407,000)		(11,874,000)
Fair Value	456,590,000		456,590,000		759,224,000
Debt Securities, Held-to-maturity, Fair Value	151,698,000		151,698,000
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	7,840,000		7,840,000
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain	0		0
Investment securities held to maturity, at amortized cost; fair value of $258,677 and $0 at September 30, 2022 and December 31, 2021, respectively	159,538,000		159,538,000
Mortgage-backed securities: Commercial
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	426,483,000		426,483,000		595,659,000
Gross Unrealized Gains	0		0		9,103,000
Gross Unrealized Losses	(46,868,000)		(46,868,000)		(5,360,000)
Fair Value	379,615,000		379,615,000		599,402,000
Debt Securities, Held-to-maturity, Fair Value	106,979,000		106,979,000
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	4,668,000		4,668,000
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain	0		0
Investment securities held to maturity, at amortized cost; fair value of $258,677 and $0 at September 30, 2022 and December 31, 2021, respectively	111,647,000		111,647,000
Corporate securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	23,362,000		23,362,000		23,398,000
Gross Unrealized Gains	0		0		130,000
Gross Unrealized Losses	(4,647,000)		(4,647,000)		(1,044,000)
Fair Value	18,715,000		18,715,000		22,484,000
Municipal securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	180,265,000		180,265,000		104,371,000
Gross Unrealized Gains	0		0		1,680,000
Gross Unrealized Losses	(17,831,000)		(17,831,000)		(767,000)
Fair Value	162,434,000		$ 162,434,000		$ 105,284,000
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%		10%
Asset-backed Securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	153,548,000		$ 153,548,000		$ 153,564,000
Gross Unrealized Gains	0		0		11,000
Gross Unrealized Losses	(9,645,000)		(9,645,000)		(124,000)
Fair Value	143,903,000		143,903,000		$ 153,451,000
US Treasury Notes Securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	3,988,000		3,988,000
Gross Unrealized Gains	0		0
Gross Unrealized Losses	(99,000)		(99,000)
Fair Value	3,889,000		3,889,000
Agency Securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	4,000,000		4,000,000
Gross Unrealized Gains	0		0
Gross Unrealized Losses	(125,000)		(125,000)
Fair Value	$ 3,875,000		$ 3,875,000

Securities Available for Sale_2

Securities Available for Sale - Interest Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Debt Securities, Available-for-Sale [Abstract]
Taxable	$ 12,907	$ 9,025	$ 36,303	$ 24,182
Nontaxable	591	182	1,159	653
Total	$ 13,498	$ 9,207	$ 37,462	$ 24,835

Securities Available for Sale_3

Securities Available for Sale - Amortized Cost and Estimated Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Amortized Cost
Due within one year	$ 2,616
Due after one year through five years	102,687
Due after five years through ten years	159,709
Due after ten years	2,056,683
Amortized Cost	2,321,695	$ 2,685,648
Due within one year	0
Due after one year through five years	0
Due after five years through ten years	36,906
Due after ten years	234,279
Total	271,185
Estimated Fair Value
Due within one year	2,565
Due after one year through five years	95,593
Due after five years through ten years	143,728
Due after ten years	1,751,462
Estimated Fair Value	1,993,348	2,666,275
Due within one year	0
Due after one year through five years	0
Due after five years through ten years	35,677
Due after ten years	223,000
Total	258,677
Collateralized mortgage obligations
Amortized Cost
Amortized Cost	974,052	1,039,543
Estimated Fair Value
Estimated Fair Value	824,327	1,026,430
Mortgage-backed securities: Residential
Amortized Cost
Amortized Cost	555,997	769,113
Estimated Fair Value
Estimated Fair Value	456,590	759,224
Mortgage-backed securities: Commercial
Amortized Cost
Amortized Cost	426,483	595,659
Estimated Fair Value
Estimated Fair Value	379,615	599,402
Asset-backed Securities
Amortized Cost
Amortized Cost	153,548	153,564
Estimated Fair Value
Estimated Fair Value	143,903	153,451
Municipal Bonds [Member]
Amortized Cost
Amortized Cost	180,265	104,371
Estimated Fair Value
Estimated Fair Value	162,434	$ 105,284
US Treasury Notes Securities
Amortized Cost
Amortized Cost	3,988
Estimated Fair Value
Estimated Fair Value	$ 3,889

Securities Available for Sale_4

Securities Available for Sale - Aggregate Unrealized Losses and Fair Value (Details)	Sep. 30, 2022 USD ($) security	Dec. 31, 2021 USD ($) security
Number  of Securities
Less than 12 months | security	233	152
12 months or longer | security	110	20
Total | security	343	172
Fair  Value
Less than 12 months	$ 791,689,000	$ 1,764,910,000
12 months or longer	1,196,726,000	174,593,000
Total	1,988,415,000	1,939,503,000
Gross Unrealized Losses
Less than 12 months	(81,750,000)	(29,377,000)
12 months or longer	(246,606,000)	(6,262,000)
Total	$ (328,356,000)	$ (35,639,000)
Collateralized mortgage obligations
Number  of Securities
Less than 12 months | security	87	39
12 months or longer | security	36	2
Total | security	123	41
Fair  Value
Less than 12 months	$ 213,800,000	$ 757,799,000
12 months or longer	605,594,000	37,438,000
Total	819,394,000	795,237,000
Gross Unrealized Losses
Less than 12 months	(23,090,000)	(15,445,000)
12 months or longer	(126,644,000)	(1,025,000)
Total	(149,734,000)	$ (16,470,000)
Allowance for credit losses for available for sale securities	0
Mortgage-backed securities
Gross Unrealized Losses
Allowance for credit losses for available for sale securities	$ 0
Mortgage-backed securities: Residential
Number  of Securities
Less than 12 months | security	31	49
12 months or longer | security	34	13
Total | security	65	62
Fair  Value
Less than 12 months	$ 102,932,000	$ 603,372,000
12 months or longer	353,658,000	75,211,000
Total	456,590,000	678,583,000
Gross Unrealized Losses
Less than 12 months	(16,266,000)	(9,371,000)
12 months or longer	(83,141,000)	(2,503,000)
Total	$ (99,407,000)	$ (11,874,000)
Mortgage-backed securities: Commercial
Number  of Securities
Less than 12 months | security	42	24
12 months or longer | security	13	4
Total | security	55	28
Fair  Value
Less than 12 months	$ 259,911,000	$ 214,384,000
12 months or longer	119,704,000	57,656,000
Total	379,615,000	272,040,000
Gross Unrealized Losses
Less than 12 months	(23,430,000)	(3,339,000)
12 months or longer	(23,438,000)	(2,021,000)
Total	$ (46,868,000)	$ (5,360,000)
Corporate securities
Number  of Securities
Less than 12 months | security	1	4
12 months or longer | security	5	1
Total | security	6	5
Fair  Value
Less than 12 months	$ 3,533,000	$ 14,067,000
12 months or longer	15,182,000	4,288,000
Total	18,715,000	18,355,000
Gross Unrealized Losses
Less than 12 months	(467,000)	(331,000)
12 months or longer	(4,180,000)	(713,000)
Total	(4,647,000)	$ (1,044,000)
Allowance for credit losses for available for sale securities	$ 0
Municipal securities
Number  of Securities
Less than 12 months | security	61	23
12 months or longer | security	13	0
Total | security	74	23
Fair  Value
Less than 12 months	$ 131,751,000	$ 59,403,000
12 months or longer	30,683,000	0
Total	162,434,000	59,403,000
Gross Unrealized Losses
Less than 12 months	(13,514,000)	(767,000)
12 months or longer	(4,317,000)	0
Total	$ (17,831,000)	$ (767,000)
U.S. Government Agency and U.S. Government Sponsored Enterprises
Gross Unrealized Losses
Percentage of portfolio	85%
Asset-backed Securities
Number  of Securities
Less than 12 months | security	9	13
12 months or longer | security	9	0
Total | security	18	13
Fair  Value
Less than 12 months	$ 71,998,000	$ 115,885,000
12 months or longer	71,905,000	0
Total	143,903,000	115,885,000
Gross Unrealized Losses
Less than 12 months	(4,759,000)	(124,000)
12 months or longer	(4,886,000)	0
Total	$ (9,645,000)	$ (124,000)
US Treasury Notes Securities
Number  of Securities
Less than 12 months | security	1
12 months or longer | security	0
Total | security	1
Fair  Value
Less than 12 months	$ 3,889,000
12 months or longer	0
Total	3,889,000
Gross Unrealized Losses
Less than 12 months	(99,000)
12 months or longer	0
Total	$ (99,000)
Agency Securities
Number  of Securities
Less than 12 months | security	1
12 months or longer | security	0
Total | security	1
Fair  Value
Less than 12 months	$ 3,875,000
12 months or longer	0
Total	3,875,000
Gross Unrealized Losses
Less than 12 months	(125,000)
12 months or longer	0
Total	$ (125,000)

Held to Maturity (Details)

Held to Maturity (Details) - USD ($)	Sep. 30, 2022	Dec. 31, 2021
Investments, Debt and Equity Securities [Abstract]
Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest	$ 0	$ 0

Loans Receivable and Allowanc_3

Loans Receivable and Allowance for Credit Losses - Schedule of Loans Receivable By Major Category (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2022 USD ($) segment	Jun. 30, 2022 USD ($)	Dec. 31, 2021 USD ($)	Sep. 30, 2021 USD ($)	Jun. 30, 2021 USD ($)	Dec. 31, 2020 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 15,491,187		$ 13,952,743
Total	(160,561)	$ (151,580)	(140,550)	$ (136,774)	$ (189,452)	$ (206,741)
Loans receivable, net of allowance for credit losses	15,330,626		13,812,193
Net deferred fees/costs	$ 9,300		6,200
Number of portfolio segments | segment	4
Increase (Decrease) in Finance Receivables	$ 1,540,000
SBA, Paycheck Protection Program Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Net deferred fees/costs	130		6,700
Real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	9,504,893		9,105,931
Total	(99,924)	(99,824)	(108,440)	(105,569)	(155,253)	(162,196)
Real estate loans | Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	75,488		69,199
Total	(850)		(729)
Real estate loans | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	9,216,194		8,816,080
Total	(97,535)		(106,170)
Real estate loans | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	213,211		220,652
Total	(1,539)		(1,541)
Commercial business
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	5,124,421		4,208,674
Total	(53,013)	(44,852)	(27,811)	(27,372)	(29,500)	(39,155)
Commercial business | SBA, Paycheck Protection Program Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	5,900		228,100
Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	823,809		579,626
Total	(6,894)	(6,079)	(3,316)	(2,689)	(3,612)	(4,227)
Consumer and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	38,064		58,512
Total	$ (730)	$ (825)	$ (983)	$ (1,144)	$ (1,087)	$ (1,163)

Loans Receivable and Allowanc_4

Loans Receivable and Allowance for Credit Losses - Allowance for Credit Losses on Financing Receivables (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2022	Dec. 31, 2021	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Allowance for Loan Losses and the Loans Receivables by Impairment Methodology
Accrued interest receivable on loans	$ 35,700	$ 36,200		$ 35,700
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period	151,580	136,774	$ 189,452	140,550	$ 206,741
Provision (credit) for credit/loan losses	9,200		(10,000)	1,400	(13,700)
Loans charged off	(550)		(44,583)	(2,765)	(60,896)
Recoveries of charge offs	331		1,905	21,376	4,629
Balance, end of period	160,561	140,550	136,774	160,561	136,774
Allowance for credit losses:
Individually evaluated	7,199	5,115		7,199
Collectively evaluated	153,362	135,435		153,362
Total	160,561	140,550		160,561
Loans outstanding:
Individually evaluated	89,649	106,633		89,649
Collectively evaluated	15,401,538	13,846,110		15,401,538
Total	15,491,187	13,952,743		15,491,187
Reserve for unfunded loan commitments recorded in other liabilities	1,200	1,100		1,200
Additions to reserves for unfunded loan commitments recorded in credit related expenses	(250)		0	130	105
Provision for accrued interest receivables on loans				1,650	770
ACL for the TDRs that had payment defaults	771		51	771	84
Total charge-offs of TDR loans modified	0		0	0	0
Real estate
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period	99,824	105,569	155,253	108,440	162,196
Provision (credit) for credit/loan losses	109		(9,142)	(25,433)	(2,570)
Loans charged off	(185)	(29,600)	(41,655)	(1,936)	(56,645)
Recoveries of charge offs	176		1,113	18,853	2,588
Balance, end of period	99,924	108,440	105,569	99,924	105,569
Allowance for credit losses:
Individually evaluated	2,956	2,025		2,956
Collectively evaluated	96,968	106,415		96,968
Total	99,924	108,440		99,924
Loans outstanding:
Individually evaluated	62,936	83,347		62,936
Collectively evaluated	9,441,957	9,022,584		9,441,957
Total	9,504,893	9,105,931		9,504,893
Commercial business
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period	44,852	27,372	29,500	27,811	39,155
Provision (credit) for credit/loan losses	8,276		(1,011)	23,327	(10,565)
Loans charged off	(262)		(1,895)	(611)	(3,077)
Recoveries of charge offs	147		778	2,486	1,859
Balance, end of period	53,013	27,811	27,372	53,013	27,372
Allowance for credit losses:
Individually evaluated	4,207	3,056		4,207
Collectively evaluated	48,806	24,755		48,806
Total	53,013	27,811		53,013
Loans outstanding:
Individually evaluated	17,553	19,407		17,553
Collectively evaluated	5,106,868	4,189,267		5,106,868
Total	5,124,421	4,208,674		5,124,421
Residential mortgage
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period	6,079	2,689	3,612	3,316	4,227
Provision (credit) for credit/loan losses	837		0	3,600	(615)
Loans charged off	(22)		(923)	(22)	(923)
Recoveries of charge offs	0		0	0	0
Balance, end of period	6,894	3,316	2,689	6,894	2,689
Allowance for credit losses:
Individually evaluated	15	11		15
Collectively evaluated	6,879	3,305		6,879
Total	6,894	3,316		6,894
Loans outstanding:
Individually evaluated	8,731	3,470		8,731
Collectively evaluated	815,078	576,156		815,078
Total	823,809	579,626		823,809
Consumer and other
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period	825	1,144	1,087	983	1,163
Provision (credit) for credit/loan losses	(22)		153	(94)	50
Loans charged off	(81)		(110)	(196)	(251)
Recoveries of charge offs	8		14	37	182
Balance, end of period	730	983	$ 1,144	730	$ 1,144
Allowance for credit losses:
Individually evaluated	21	23		21
Collectively evaluated	709	960		709
Total	730	983		730
Loans outstanding:
Individually evaluated	429	409		429
Collectively evaluated	37,635	58,103		37,635
Total	$ 38,064	$ 58,512		$ 38,064

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	9 Months Ended
	Sep. 30, 2022	Dec. 31, 2021
Financing Receivable, Nonaccrual [Line Items]
Threshold period for loans to be placed on nonaccrual status	90 days
Guaranteed portion of SBA loans excluded from Nonaccrual loans	$ 9,900	$ 19,500
Nonaccrual with No ACL	39,540	25,860
Nonaccrual with an ACL	25,031	28,756
Financing Receivable, Nonaccrual	64,571	54,616
Accruing Loans Past Due 90 or More Days	5,306	2,131
Commercial business
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No ACL	1,625	4,726
Nonaccrual with an ACL	6,050	6,299
Financing Receivable, Nonaccrual	7,675	11,025
Accruing Loans Past Due 90 or More Days	419	1,494
Residential Portfolio Segment
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No ACL	5,967	275
Nonaccrual with an ACL	2,764	3,195
Financing Receivable, Nonaccrual	8,731	3,470
Accruing Loans Past Due 90 or More Days	0	0
Consumer
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No ACL	0	0
Nonaccrual with an ACL	358	365
Financing Receivable, Nonaccrual	358	365
Accruing Loans Past Due 90 or More Days	269	422
Residential | Real estate loans
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No ACL	0	0
Nonaccrual with an ACL	0	0
Financing Receivable, Nonaccrual	0	0
Accruing Loans Past Due 90 or More Days	0	0
Commercial | Real estate loans | Retail
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No ACL	20,546	7,586
Nonaccrual with an ACL	4,687	2,604
Financing Receivable, Nonaccrual	25,233	10,190
Accruing Loans Past Due 90 or More Days	0	0
Commercial | Real estate loans | Hotel & motel
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No ACL	5,815	5,471
Nonaccrual with an ACL	4,062	6,564
Financing Receivable, Nonaccrual	9,877	12,035
Accruing Loans Past Due 90 or More Days	4,618	0
Commercial | Real estate loans | Real Estate Commercial Gas Station & Car Wash [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No ACL	2,847	575
Nonaccrual with an ACL	1,011	1,267
Financing Receivable, Nonaccrual	3,858	1,842
Accruing Loans Past Due 90 or More Days	0	0
Commercial | Real estate loans | Mixed use
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No ACL	781	5,307
Nonaccrual with an ACL	3,258	1,412
Financing Receivable, Nonaccrual	4,039	6,719
Accruing Loans Past Due 90 or More Days	0	0
Commercial | Real estate loans | Industrial & warehouse
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No ACL	129	687
Nonaccrual with an ACL	919	1,897
Financing Receivable, Nonaccrual	1,048	2,584
Accruing Loans Past Due 90 or More Days	0	0
Commercial | Real estate loans | Other
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No ACL	1,830	1,233
Nonaccrual with an ACL	1,922	5,153
Financing Receivable, Nonaccrual	3,752	6,386
Accruing Loans Past Due 90 or More Days	0	215
Construction | Real estate loans
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No ACL	0	0
Nonaccrual with an ACL	0	0
Financing Receivable, Nonaccrual	0	0
Accruing Loans Past Due 90 or More Days	$ 0	$ 0

Loans Receivable and Allowanc_6

Loans Receivable and Allowance for Credit Losses - Collateral-Dependent Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 160,561	$ 151,580	$ 140,550	$ 136,774	$ 189,452	$ 206,741
Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	60,660		73,972
Real Estate Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	54,865		67,357
Other Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	5,795		6,615
Real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	99,924	99,824	108,440	105,569	155,253	162,196
Real estate | Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	850		729
Real estate | Residential | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0		0
Real estate | Residential | Real Estate Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0		0
Real estate | Residential | Other Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0		0
Real estate | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	97,535		106,170
Real estate | Commercial | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	47,272		65,590
Real estate | Commercial | Real Estate Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	47,272		65,590
Real estate | Commercial | Other Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0		0
Real estate | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,539		1,541
Real estate | Construction | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0		0
Real estate | Construction | Real Estate Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0		0
Real estate | Construction | Other Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0		0
Commercial business
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	53,013	44,852	27,811	27,372	29,500	39,155
Commercial business | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	7,421		8,382
Commercial business | Real Estate Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,626		1,767
Commercial business | Other Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	5,795		6,615
Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	6,894	6,079	3,316	2,689	3,612	4,227
Residential mortgage | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	5,967		0
Residential mortgage | Real Estate Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	5,967		0
Residential mortgage | Other Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0		0
Consumer and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	730	$ 825	983	$ 1,144	$ 1,087	$ 1,163
Consumer and other | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0		0
Consumer and other | Real Estate Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0		0
Consumer and other | Other Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 0		$ 0

Loans Receivable and Allowanc_7

Loans Receivable and Allowance for Credit Losses - Interest Income Reversals (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest income reversals	$ 328	$ 1,083	$ 1,745	$ 2,806
Real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest income reversals	154	1,071	1,406	2,761
Commercial business
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest income reversals	21	12	47	49
Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest income reversals	153	0	292	(4)
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest income reversals	$ 0	$ 0	$ 0	$ 0

Loans Receivable and Allowanc_8

Loans Receivable and Allowance for Credit Losses - Past Due Financing Receivables (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Financing Receivable, Past Due [Line Items]
Total loans	$ 15,491,187	$ 13,952,743
Total Past Due
Financing Receivable, Past Due [Line Items]
Total loans	49,325	78,444
30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans	13,447	29,742
60-89 Days  Past Due
Financing Receivable, Past Due [Line Items]
Total loans	6,275	13,980
90 or More Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans	29,603	34,722
Real estate
Financing Receivable, Past Due [Line Items]
Total loans	9,504,893	9,105,931
Real estate | Residential
Financing Receivable, Past Due [Line Items]
Total loans	75,488	69,199
Real estate | Residential | Total Past Due
Financing Receivable, Past Due [Line Items]
Total loans	0	0
Real estate | Residential | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans	0	0
Real estate | Residential | 60-89 Days  Past Due
Financing Receivable, Past Due [Line Items]
Total loans	0	0
Real estate | Residential | 90 or More Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans	0	0
Real estate | Commercial
Financing Receivable, Past Due [Line Items]
Total loans	9,216,194	8,816,080
Real estate | Commercial | Retail | Total Past Due
Financing Receivable, Past Due [Line Items]
Total loans	10,498	11,344
Real estate | Commercial | Retail | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans	5,086	1,250
Real estate | Commercial | Retail | 60-89 Days  Past Due
Financing Receivable, Past Due [Line Items]
Total loans	0	927
Real estate | Commercial | Retail | 90 or More Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans	5,412	9,167
Real estate | Commercial | Hotel & motel | Total Past Due
Financing Receivable, Past Due [Line Items]
Total loans	13,386	18,228
Real estate | Commercial | Hotel & motel | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans	222	9,320
Real estate | Commercial | Hotel & motel | 60-89 Days  Past Due
Financing Receivable, Past Due [Line Items]
Total loans	4,708	4,148
Real estate | Commercial | Hotel & motel | 90 or More Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans	8,456	4,760
Real estate | Commercial | Gas station & car wash | Total Past Due
Financing Receivable, Past Due [Line Items]
Total loans	1,093	1,407
Real estate | Commercial | Gas station & car wash | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans	0	575
Real estate | Commercial | Gas station & car wash | 60-89 Days  Past Due
Financing Receivable, Past Due [Line Items]
Total loans	0	0
Real estate | Commercial | Gas station & car wash | 90 or More Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans	1,093	832
Real estate | Commercial | Mixed use | Total Past Due
Financing Receivable, Past Due [Line Items]
Total loans	3,659	6,749
Real estate | Commercial | Mixed use | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans	0	1,124
Real estate | Commercial | Mixed use | 60-89 Days  Past Due
Financing Receivable, Past Due [Line Items]
Total loans	0	0
Real estate | Commercial | Mixed use | 90 or More Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans	3,659	5,625
Real estate | Commercial | Industrial & warehouse | Total Past Due
Financing Receivable, Past Due [Line Items]
Total loans	526	1,032
Real estate | Commercial | Industrial & warehouse | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans	32	247
Real estate | Commercial | Industrial & warehouse | 60-89 Days  Past Due
Financing Receivable, Past Due [Line Items]
Total loans	86	0
Real estate | Commercial | Industrial & warehouse | 90 or More Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans	408	785
Real estate | Commercial | Other | Total Past Due
Financing Receivable, Past Due [Line Items]
Total loans	2,257	10,905
Real estate | Commercial | Other | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans	0	1,198
Real estate | Commercial | Other | 60-89 Days  Past Due
Financing Receivable, Past Due [Line Items]
Total loans	236	6,522
Real estate | Commercial | Other | 90 or More Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans	2,021	3,185
Real estate | Construction
Financing Receivable, Past Due [Line Items]
Total loans	213,211	220,652
Real estate | Construction | Total Past Due
Financing Receivable, Past Due [Line Items]
Total loans	0	0
Real estate | Construction | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans	0	0
Real estate | Construction | 60-89 Days  Past Due
Financing Receivable, Past Due [Line Items]
Total loans	0	0
Real estate | Construction | 90 or More Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans	0	0
Commercial business
Financing Receivable, Past Due [Line Items]
Total loans	5,124,421	4,208,674
Commercial business | Total Past Due
Financing Receivable, Past Due [Line Items]
Total loans	10,160	10,636
Commercial business | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans	6,070	1,792
Commercial business | 60-89 Days  Past Due
Financing Receivable, Past Due [Line Items]
Total loans	958	2,362
Commercial business | 90 or More Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans	3,132	6,482
Residential mortgage
Financing Receivable, Past Due [Line Items]
Total loans	823,809	579,626
Residential mortgage | Total Past Due
Financing Receivable, Past Due [Line Items]
Total loans	6,800	17,276
Residential mortgage | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans	1,764	14,177
Residential mortgage | 60-89 Days  Past Due
Financing Receivable, Past Due [Line Items]
Total loans	241	0
Residential mortgage | 90 or More Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans	4,795	3,099
Consumer and other
Financing Receivable, Past Due [Line Items]
Total loans	38,064	58,512
Consumer and other | Total Past Due
Financing Receivable, Past Due [Line Items]
Total loans	946	867
Consumer and other | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans	273	59
Consumer and other | 60-89 Days  Past Due
Financing Receivable, Past Due [Line Items]
Total loans	46	21
Consumer and other | 90 or More Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans	$ 627	$ 787

Loans Receivable and Allowanc_9

Loans Receivable and Allowance for Credit Losses - Financing Receivable Credit Quality Indicators (Details) - USD ($)	Sep. 30, 2022	Dec. 31, 2021
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	$ 4,414,801,000	$ 4,569,237,000
Term loan originated in year two	3,807,693,000	1,949,984,000
Term loan originated in year three	1,758,520,000	1,864,273,000
Term loan originated in year four	1,508,595,000	1,586,677,000
Term loan originated in year five	1,223,725,000	1,126,085,000
Term loan originated prior to year five	1,581,304,000	1,427,092,000
Revolving Loans	1,196,549,000	1,429,395,000
Total loans	15,491,187,000	13,952,743,000
Revolving loans converted to term loans	0	0
Real estate loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	9,504,893,000	9,105,931,000
Commercial business
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	1,920,257,000	1,760,279,000
Term loan originated in year two	1,237,939,000	432,609,000
Term loan originated in year three	347,416,000	468,548,000
Term loan originated in year four	353,961,000	103,360,000
Term loan originated in year five	77,700,000	57,982,000
Term loan originated prior to year five	109,585,000	78,838,000
Revolving Loans	1,077,563,000	1,307,058,000
Total loans	5,124,421,000	4,208,674,000
Residential Portfolio Segment
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	346,195,000	282,466,000
Term loan originated in year two	289,014,000	1,420,000
Term loan originated in year three	1,395,000	40,505,000
Term loan originated in year four	34,400,000	113,137,000
Term loan originated in year five	66,100,000	85,987,000
Term loan originated prior to year five	86,705,000	56,111,000
Revolving Loans	0	0
Total loans	823,809,000	579,626,000
Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	2,837,000	19,203,000
Term loan originated in year two	1,047,000	5,347,000
Term loan originated in year three	3,816,000	1,783,000
Term loan originated in year four	1,355,000	1,699,000
Term loan originated in year five	1,185,000	1,769,000
Term loan originated prior to year five	7,399,000	6,616,000
Revolving Loans	20,425,000	22,095,000
Total loans	38,064,000	58,512,000
Pass / not rated
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	4,367,851,000	4,550,798,000
Term loan originated in year two	3,763,733,000	1,931,920,000
Term loan originated in year three	1,734,124,000	1,799,957,000
Term loan originated in year four	1,487,099,000	1,489,539,000
Term loan originated in year five	1,193,158,000	1,035,913,000
Term loan originated prior to year five	1,473,570,000	1,229,565,000
Revolving Loans	1,187,540,000	1,415,460,000
Total loans	15,207,075,000	13,453,152,000
Pass / not rated | Commercial business
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	1,920,005,000	1,755,104,000
Term loan originated in year two	1,214,335,000	431,145,000
Term loan originated in year three	327,471,000	461,460,000
Term loan originated in year four	351,613,000	98,812,000
Term loan originated in year five	74,395,000	53,629,000
Term loan originated prior to year five	103,832,000	70,294,000
Revolving Loans	1,069,033,000	1,299,372,000
Total loans	5,060,684,000	4,169,816,000
Pass / not rated | Residential Portfolio Segment
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	346,195,000	282,191,000
Term loan originated in year two	289,014,000	1,420,000
Term loan originated in year three	1,395,000	40,377,000
Term loan originated in year four	34,293,000	112,743,000
Term loan originated in year five	65,713,000	85,446,000
Term loan originated prior to year five	78,468,000	53,979,000
Revolving Loans	0	0
Total loans	815,078,000	576,156,000
Pass / not rated | Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	2,837,000	19,203,000
Term loan originated in year two	1,047,000	5,347,000
Term loan originated in year three	3,816,000	1,783,000
Term loan originated in year four	1,355,000	1,699,000
Term loan originated in year five	1,185,000	1,769,000
Term loan originated prior to year five	7,026,000	6,165,000
Revolving Loans	20,425,000	22,095,000
Total loans	37,691,000	58,061,000
Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	0	6,932,000
Term loan originated in year two	32,030,000	9,405,000
Term loan originated in year three	15,335,000	44,347,000
Term loan originated in year four	119,000	69,630,000
Term loan originated in year five	6,628,000	32,828,000
Term loan originated prior to year five	20,500,000	85,488,000
Revolving Loans	4,787,000	8,564,000
Total loans	79,399,000	257,194,000
Special mention | Commercial business
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	0	1,379,000
Term loan originated in year two	20,390,000	523,000
Term loan originated in year three	13,621,000	4,780,000
Term loan originated in year four	119,000	2,897,000
Term loan originated in year five	2,099,000	550,000
Term loan originated prior to year five	485,000	5,083,000
Revolving Loans	4,585,000	2,594,000
Total loans	41,299,000	17,806,000
Special mention | Residential Portfolio Segment
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	0	0
Term loan originated in year two	0	0
Term loan originated in year three	0	0
Term loan originated in year four	0	0
Term loan originated in year five	0	0
Term loan originated prior to year five	0	0
Revolving Loans	0	0
Total loans	0	0
Special mention | Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	0	0
Term loan originated in year two	0	0
Term loan originated in year three	0	0
Term loan originated in year four	0	0
Term loan originated in year five	0	0
Term loan originated prior to year five	0	0
Revolving Loans	0	0
Total loans	0	0
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	46,950,000	11,507,000
Term loan originated in year two	11,930,000	8,659,000
Term loan originated in year three	9,061,000	19,969,000
Term loan originated in year four	21,377,000	27,508,000
Term loan originated in year five	23,939,000	57,344,000
Term loan originated prior to year five	87,234,000	112,039,000
Revolving Loans	4,222,000	5,371,000
Total loans	204,713,000	242,397,000
Substandard | Commercial business
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	252,000	3,796,000
Term loan originated in year two	3,214,000	941,000
Term loan originated in year three	6,324,000	2,308,000
Term loan originated in year four	2,229,000	1,651,000
Term loan originated in year five	1,206,000	3,803,000
Term loan originated prior to year five	5,268,000	3,461,000
Revolving Loans	3,945,000	5,092,000
Total loans	22,438,000	21,052,000
Substandard | Residential Portfolio Segment
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	0	275,000
Term loan originated in year two	0	0
Term loan originated in year three	0	128,000
Term loan originated in year four	107,000	394,000
Term loan originated in year five	387,000	541,000
Term loan originated prior to year five	8,237,000	2,132,000
Revolving Loans	0	0
Total loans	8,731,000	3,470,000
Substandard | Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	0	0
Term loan originated in year two	0	0
Term loan originated in year three	0	0
Term loan originated in year four	0	0
Term loan originated in year five	0	0
Term loan originated prior to year five	373,000	451,000
Revolving Loans	0	0
Total loans	373,000	451,000
Doubtful / loss
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	0	0
Term loan originated in year two	0	0
Term loan originated in year three	0	0
Term loan originated in year four	0	0
Term loan originated in year five	0	0
Term loan originated prior to year five	0	0
Revolving Loans	0	0
Total loans	0	0
Doubtful / loss | Commercial business
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	0	0
Term loan originated in year two	0	0
Term loan originated in year three	0	0
Term loan originated in year four	0	0
Term loan originated in year five	0	0
Term loan originated prior to year five	0	0
Revolving Loans	0	0
Total loans	0	0
Doubtful / loss | Residential Portfolio Segment
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	0	0
Term loan originated in year two	0	0
Term loan originated in year three	0	0
Term loan originated in year four	0	0
Term loan originated in year five	0	0
Term loan originated prior to year five	0	0
Revolving Loans	0	0
Total loans	0	0
Doubtful / loss | Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	0	0
Term loan originated in year two	0	0
Term loan originated in year three	0	0
Term loan originated in year four	0	0
Term loan originated in year five	0	0
Term loan originated prior to year five	0	0
Revolving Loans	0	0
Total loans	0	0
Residential | Real estate loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	14,306,000	26,093,000
Term loan originated in year two	25,324,000	10,471,000
Term loan originated in year three	9,743,000	11,442,000
Term loan originated in year four	9,085,000	5,619,000
Term loan originated in year five	4,652,000	2,987,000
Term loan originated prior to year five	7,708,000	8,184,000
Revolving Loans	4,670,000	4,403,000
Total loans	75,488,000	69,199,000
Residential | Pass / not rated | Real estate loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	14,306,000	26,093,000
Term loan originated in year two	25,324,000	10,471,000
Term loan originated in year three	9,743,000	11,442,000
Term loan originated in year four	9,085,000	4,952,000
Term loan originated in year five	3,990,000	2,987,000
Term loan originated prior to year five	7,146,000	7,260,000
Revolving Loans	4,670,000	4,403,000
Total loans	74,264,000	67,608,000
Residential | Special mention | Real estate loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	0	0
Term loan originated in year two	0	0
Term loan originated in year three	0	0
Term loan originated in year four	0	534,000
Term loan originated in year five	0	0
Term loan originated prior to year five	0	924,000
Revolving Loans	0	0
Total loans	0	1,458,000
Residential | Substandard | Real estate loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	0	0
Term loan originated in year two	0	0
Term loan originated in year three	0	0
Term loan originated in year four	0	133,000
Term loan originated in year five	662,000	0
Term loan originated prior to year five	562,000	0
Revolving Loans	0	0
Total loans	1,224,000	133,000
Residential | Doubtful / loss | Real estate loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	0	0
Term loan originated in year two	0	0
Term loan originated in year three	0	0
Term loan originated in year four	0	0
Term loan originated in year five	0	0
Term loan originated prior to year five	0	0
Revolving Loans	0	0
Total loans	0	0
Commercial | Real estate loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	2,084,090,000	2,464,651,000
Term loan originated in year two	2,215,405,000	1,432,509,000
Term loan originated in year three	1,333,336,000	1,309,951,000
Term loan originated in year four	1,074,370,000	1,283,958,000
Term loan originated in year five	1,066,035,000	963,994,000
Term loan originated prior to year five	1,349,156,000	1,265,267,000
Revolving Loans	93,802,000	95,750,000
Total loans	9,216,194,000	8,816,080,000
Commercial | Pass / not rated | Real estate loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	2,083,073,000	2,451,662,000
Term loan originated in year two	2,195,049,000	1,415,909,000
Term loan originated in year three	1,328,885,000	1,252,851,000
Term loan originated in year four	1,055,329,000	1,238,425,000
Term loan originated in year five	1,039,822,000	883,790,000
Term loan originated prior to year five	1,272,491,000	1,086,182,000
Revolving Loans	93,323,000	89,501,000
Total loans	9,067,972,000	8,418,320,000
Commercial | Special mention | Real estate loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	0	5,553,000
Term loan originated in year two	11,640,000	8,882,000
Term loan originated in year three	1,714,000	39,567,000
Term loan originated in year four	0	20,203,000
Term loan originated in year five	4,529,000	27,204,000
Term loan originated prior to year five	3,871,000	73,090,000
Revolving Loans	202,000	5,970,000
Total loans	21,956,000	180,469,000
Commercial | Substandard | Real estate loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	1,017,000	7,436,000
Term loan originated in year two	8,716,000	7,718,000
Term loan originated in year three	2,737,000	17,533,000
Term loan originated in year four	19,041,000	25,330,000
Term loan originated in year five	21,684,000	53,000,000
Term loan originated prior to year five	72,794,000	105,995,000
Revolving Loans	277,000	279,000
Total loans	126,266,000	217,291,000
Commercial | Doubtful / loss | Real estate loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	0	0
Term loan originated in year two	0	0
Term loan originated in year three	0	0
Term loan originated in year four	0	0
Term loan originated in year five	0	0
Term loan originated prior to year five	0	0
Revolving Loans	0	0
Total loans	0	0
Construction | Real estate loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	47,116,000	16,545,000
Term loan originated in year two	38,964,000	67,628,000
Term loan originated in year three	62,814,000	32,044,000
Term loan originated in year four	35,424,000	78,904,000
Term loan originated in year five	8,053,000	13,366,000
Term loan originated prior to year five	20,751,000	12,076,000
Revolving Loans	89,000	89,000
Total loans	213,211,000	220,652,000
Construction | Pass / not rated | Real estate loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	1,435,000	16,545,000
Term loan originated in year two	38,964,000	67,628,000
Term loan originated in year three	62,814,000	32,044,000
Term loan originated in year four	35,424,000	32,908,000
Term loan originated in year five	8,053,000	8,292,000
Term loan originated prior to year five	4,607,000	5,685,000
Revolving Loans	89,000	89,000
Total loans	151,386,000	163,191,000
Construction | Special mention | Real estate loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	0	0
Term loan originated in year two	0	0
Term loan originated in year three	0	0
Term loan originated in year four	0	45,996,000
Term loan originated in year five	0	5,074,000
Term loan originated prior to year five	16,144,000	6,391,000
Revolving Loans	0	0
Total loans	16,144,000	57,461,000
Construction | Substandard | Real estate loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	45,681,000	0
Term loan originated in year two	0	0
Term loan originated in year three	0	0
Term loan originated in year four	0	0
Term loan originated in year five	0	0
Term loan originated prior to year five	0	0
Revolving Loans	0	0
Total loans	45,681,000	0
Construction | Doubtful / loss | Real estate loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	0	0
Term loan originated in year two	0	0
Term loan originated in year three	0	0
Term loan originated in year four	0	0
Term loan originated in year five	0	0
Term loan originated prior to year five	0	0
Revolving Loans	0	0
Total loans	$ 0	$ 0

Loans Receivable and Allowan_10

Loans Receivable and Allowance for Credit Losses - Loans Held For Investment - Reclassification to Held for Sale (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Transfer of loans held for investment to held for sale	$ 47,032	$ 193,199	$ 219,287	$ 374,034
Total loans	15,491,187		15,491,187		$ 13,952,743
Pass / not rated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	15,207,075		15,207,075		13,453,152
Special mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	79,399		79,399		257,194
Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	204,713		204,713		242,397
Doubtful / loss
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	0		0		0
Real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	9,504,893		9,504,893		9,105,931
Real estate loans | Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	75,488		75,488		69,199
Real estate loans | Residential | Pass / not rated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	74,264		74,264		67,608
Real estate loans | Residential | Special mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	0		0		1,458
Real estate loans | Residential | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	1,224		1,224		133
Real estate loans | Residential | Doubtful / loss
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	0		0		0
Real estate loans | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Transfer of loans held for investment to held for sale	36,704	107,191	192,190	278,366
Total loans	9,216,194		9,216,194		8,816,080
Real estate loans | Commercial | Pass / not rated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	9,067,972		9,067,972		8,418,320
Real estate loans | Commercial | Special mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	21,956		21,956		180,469
Real estate loans | Commercial | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	126,266		126,266		217,291
Real estate loans | Commercial | Doubtful / loss
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	0		0		0
Real estate loans | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	213,211		213,211		220,652
Real estate loans | Construction | Pass / not rated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	151,386		151,386		163,191
Real estate loans | Construction | Special mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	16,144		16,144		57,461
Real estate loans | Construction | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	45,681		45,681		0
Real estate loans | Construction | Doubtful / loss
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	0		0		0
Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Transfer of loans held for investment to held for sale	0	7,018	0	7,018
Total loans	823,809		823,809		579,626
Residential mortgage | Pass / not rated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	815,078		815,078		576,156
Residential mortgage | Special mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	0		0		0
Residential mortgage | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	8,731		8,731		3,470
Residential mortgage | Doubtful / loss
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	0		0		0
Commercial business
Accounts, Notes, Loans and Financing Receivable [Line Items]
Transfer of loans held for investment to held for sale	10,328	$ 78,990	27,097	$ 88,650
Total loans	5,124,421		5,124,421		4,208,674
Commercial business | Pass / not rated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	5,060,684		5,060,684		4,169,816
Commercial business | Special mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	41,299		41,299		17,806
Commercial business | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	22,438		22,438		21,052
Commercial business | Doubtful / loss
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	0		0		0
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	38,064		38,064		58,512
Consumer | Pass / not rated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	37,691		37,691		58,061
Consumer | Special mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	0		0		0
Consumer | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	373		373		451
Consumer | Doubtful / loss
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 0		$ 0		$ 0

Loans Receivable and Allowan_11

Loans Receivable and Allowance for Credit Losses - Additional Information (Details)	3 Months Ended				9 Months Ended
	Sep. 30, 2022 USD ($) loan	Mar. 31, 2022 loan	Dec. 31, 2021 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) loan security	Sep. 30, 2021 USD ($) loan security
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, writeoff	$ 550,000			$ 44,583,000	$ 2,765,000	$ 60,896,000
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)	2%				2%
Positive or negative qualitative adjustment of the Loss Migration Ratio	0.25%				0.25%
Financing receivable, balance threshold to determine individual evaluation for impairment	$ 1,000,000				$ 1,000,000
Total TDR loans	53,580,000		$ 65,513,000		$ 53,580,000
Number of loans | loan					3	14
Allowance for TDRs	4,000,000		2,700,000		$ 4,000,000
ACL for TDRs modified during period				0	782,000	$ 89,000
Total charge-offs of TDR loans modified	0			0	0	0
ACL for the TDRs that had payment defaults	771,000			51,000	771,000	84,000
Total charge offs for TDR loans that had payment defaults	0			0	0	0
Accrued interest receivable on loans	35,700,000		36,200,000		35,700,000
Net deferred fees/costs	9,300,000		6,200,000		9,300,000
Total loans	15,491,187,000		13,952,743,000		15,491,187,000
Increase (Decrease) in Finance Receivables					1,540,000,000
Transfer from loans receivable to loans held for sale					219,287,000	374,034,000
Loans held for sale, at the lower of cost or fair value	41,989,000		99,049,000		41,989,000
Guaranteed portion of SBA loans excluded from Nonaccrual loans	9,900,000		19,500,000		9,900,000
Recoveries of charge offs	331,000			1,905,000	21,376,000	$ 4,629,000
Troubled Debt Restructuring Concession, Type, Payment Concession [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Total TDR loans	29,593,000		31,955,000		29,593,000
Troubled Debt Restructuring Concession, Type, Maturity/ Amortization Concession [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Total TDR loans	17,228,000		26,411,000		17,228,000
6500 Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Recoveries of charge offs					17,300,000
COVID-19 Pandemic
Financing Receivable, Allowance for Credit Loss [Line Items]
Amount of loans modified	800,000		22,800,000		$ 800,000
Number of loans					1
SBA, Paycheck Protection Program Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Net deferred fees/costs	130,000		6,700,000		$ 130,000
Small Business Administration Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans held for sale, at the lower of cost or fair value	41,100,000				41,100,000
Residential
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans held for sale, at the lower of cost or fair value	$ 900,000				$ 900,000
Real Estate Loan | Troubled Debt Restructuring Concession, Type, Payment Concession [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Number of loans | security					1	7
ACL for TDRs modified during period					$ 2,000,000	$ 643,000
Real Estate Loan | Troubled Debt Restructuring Concession, Type, Maturity/ Amortization Concession [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Number of loans	0				2	7
ACL for TDRs modified during period					$ 3,500,000	$ 11,900,000
Real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, writeoff	$ 185,000		29,600,000	41,655,000	1,936,000	56,645,000
Total loans	9,504,893,000		9,105,931,000		9,504,893,000
Recoveries of charge offs	176,000			1,113,000	18,853,000	$ 2,588,000
Real estate | TDR Loans on Accrual Status
Financing Receivable, Allowance for Credit Loss [Line Items]
Total TDR loans	15,451,000		43,806,000		15,451,000
Real estate | TDR Loans on Accrual Status | Troubled Debt Restructuring Concession, Type, Payment Concession [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Total TDR loans	5,410,000		23,196,000		5,410,000
Real estate | TDR Loans on Accrual Status | Troubled Debt Restructuring Concession, Type, Maturity/ Amortization Concession [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Total TDR loans	4,979,000		15,449,000		4,979,000
Real estate | Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	9,216,194,000		8,816,080,000		$ 9,216,194,000
Real estate | Commercial | Hotel & motel
Financing Receivable, Allowance for Credit Loss [Line Items]
Number of loans | loan					1	0
Real estate | Commercial | TDR Loans on Accrual Status
Financing Receivable, Allowance for Credit Loss [Line Items]
Total TDR loans	15,500,000		43,800,000		$ 15,500,000
Number of loans | loan		31			28
Real estate | Residential
Financing Receivable, Allowance for Credit Loss [Line Items]
Number of loans | loan					0	0
Total loans	75,488,000		69,199,000		$ 75,488,000
Commercial business
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, writeoff	262,000			1,895,000	$ 611,000	$ 3,077,000
Number of loans | loan					1	3
Total loans	5,124,421,000		4,208,674,000		$ 5,124,421,000
Recoveries of charge offs	147,000			778,000	2,486,000	$ 1,859,000
Commercial business | SBA, Paycheck Protection Program Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	5,900,000		228,100,000		5,900,000
Commercial business | TDR Loans on Accrual Status
Financing Receivable, Allowance for Credit Loss [Line Items]
Total TDR loans	9,921,000		8,413,000		$ 9,921,000
Number of loans | loan		19			13
Commercial business | TDR Loans on Accrual Status | Troubled Debt Restructuring Concession, Type, Payment Concession [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Total TDR loans	532,000		790,000		$ 532,000
Commercial business | TDR Loans on Accrual Status | Troubled Debt Restructuring Concession, Type, Maturity/ Amortization Concession [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Total TDR loans	9,193,000		7,284,000		9,193,000
Consumer and other
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, writeoff	81,000			110,000	$ 196,000	$ 251,000
Number of loans | loan					0	5
Total loans	38,064,000		58,512,000		$ 38,064,000
Recoveries of charge offs	8,000			14,000	37,000	$ 182,000
Consumer and other | TDR Loans on Accrual Status
Financing Receivable, Allowance for Credit Loss [Line Items]
Total TDR loans	272,000		199,000		$ 272,000
Number of loans | loan		10			9
Consumer and other | TDR Loans on Accrual Status | Troubled Debt Restructuring Concession, Type, Payment Concession [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Total TDR loans	15,000		16,000		$ 15,000
Consumer and other | TDR Loans on Accrual Status | Troubled Debt Restructuring Concession, Type, Maturity/ Amortization Concession [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Total TDR loans	257,000		183,000		257,000
Residential Portfolio Segment
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, writeoff	22,000			923,000	$ 22,000	$ 923,000
Number of loans | loan					0	0
Total loans	823,809,000		579,626,000		$ 823,809,000
Recoveries of charge offs	0			$ 0	0	$ 0
Residential Portfolio Segment | TDR Loans on Accrual Status
Financing Receivable, Allowance for Credit Loss [Line Items]
Total TDR loans	0		0		0
Residential Portfolio Segment | TDR Loans on Accrual Status | Troubled Debt Restructuring Concession, Type, Payment Concession [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Total TDR loans	0		0		0
Residential Portfolio Segment | TDR Loans on Accrual Status | Troubled Debt Restructuring Concession, Type, Maturity/ Amortization Concession [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Total TDR loans	$ 0		$ 0		$ 0
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_12

Loans Receivable and Allowance for Credit Losses - Allowance for Loans, by Portfolio Segment and Evaluation Method (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020
Loans by Portfolio Segment and Impairment Method [Abstract]
Individually evaluated loans	$ 89,649		$ 106,633
ACL on individually evaluated loans	$ 7,199		$ 5,115
Individually evaluated loans ACL coverage	8.03%		4.80%
Collectively evaluated loans	$ 15,401,538		$ 13,846,110
ACL on collectively evaluated loans	$ 153,362		$ 135,435
Collectively evaluated loans ACL coverage	1%		0.98%
Total loans	$ 15,491,187		$ 13,952,743
Allowance for credit loss	$ 160,561	$ 151,580	$ 140,550	$ 136,774	$ 189,452	$ 206,741
Total ACL to total loans	1.04%		1.01%
Real estate loans
Loans by Portfolio Segment and Impairment Method [Abstract]
Individually evaluated loans	$ 62,936		$ 83,347
ACL on individually evaluated loans	2,956		2,025
Collectively evaluated loans	9,441,957		9,022,584
ACL on collectively evaluated loans	96,968		106,415
Total loans	9,504,893		9,105,931
Allowance for credit loss	99,924	99,824	108,440	105,569	155,253	162,196
Commercial business
Loans by Portfolio Segment and Impairment Method [Abstract]
Individually evaluated loans	17,553		19,407
ACL on individually evaluated loans	$ 4,207		$ 3,056
Individually evaluated loans ACL coverage	23.97%		15.75%
Collectively evaluated loans	$ 5,106,868		$ 4,189,267
ACL on collectively evaluated loans	$ 48,806		$ 24,755
Collectively evaluated loans ACL coverage	0.96%		0.59%
Total loans	$ 5,124,421		$ 4,208,674
Allowance for credit loss	$ 53,013	44,852	$ 27,811	27,372	29,500	39,155
Total ACL to total loans	1.03%		0.66%
Residential Portfolio Segment
Loans by Portfolio Segment and Impairment Method [Abstract]
Individually evaluated loans	$ 8,731		$ 3,470
ACL on individually evaluated loans	$ 15		$ 11
Individually evaluated loans ACL coverage	0.17%		0.32%
Collectively evaluated loans	$ 815,078		$ 576,156
ACL on collectively evaluated loans	$ 6,879		$ 3,305
Collectively evaluated loans ACL coverage	0.84%		0.57%
Total loans	$ 823,809		$ 579,626
Allowance for credit loss	$ 6,894	6,079	$ 3,316	2,689	3,612	4,227
Total ACL to total loans	0.84%		0.57%
Consumer
Loans by Portfolio Segment and Impairment Method [Abstract]
Individually evaluated loans	$ 429		$ 409
ACL on individually evaluated loans	$ 21		$ 23
Individually evaluated loans ACL coverage	4.90%		5.62%
Collectively evaluated loans	$ 37,635		$ 58,103
ACL on collectively evaluated loans	$ 709		$ 960
Collectively evaluated loans ACL coverage	1.88%		1.65%
Total loans	$ 38,064		$ 58,512
Allowance for credit loss	$ 730	$ 825	$ 983	$ 1,144	$ 1,087	$ 1,163
Total ACL to total loans	1.92%		1.68%
Residential | Real estate loans
Loans by Portfolio Segment and Impairment Method [Abstract]
Individually evaluated loans	$ 0		$ 0
ACL on individually evaluated loans	0		0
Collectively evaluated loans	75,488		69,199
ACL on collectively evaluated loans	$ 850		$ 729
Collectively evaluated loans ACL coverage	1.13%		1.05%
Total loans	$ 75,488		$ 69,199
Allowance for credit loss	$ 850		$ 729
Total ACL to total loans	1.13%		1.05%
Commercial | Real estate loans
Loans by Portfolio Segment and Impairment Method [Abstract]
Individually evaluated loans	$ 62,936		$ 83,347
ACL on individually evaluated loans	$ 2,956		$ 2,025
Individually evaluated loans ACL coverage	4.70%		2.43%
Collectively evaluated loans	$ 9,153,258		$ 8,732,733
ACL on collectively evaluated loans	$ 94,579		$ 104,145
Collectively evaluated loans ACL coverage	1.03%		1.19%
Total loans	$ 9,216,194		$ 8,816,080
Allowance for credit loss	$ 97,535		$ 106,170
Total ACL to total loans	1.06%		1.20%
Construction | Real estate loans
Loans by Portfolio Segment and Impairment Method [Abstract]
Individually evaluated loans	$ 0		$ 0
ACL on individually evaluated loans	0		0
Collectively evaluated loans	213,211		220,652
ACL on collectively evaluated loans	$ 1,539		$ 1,541
Collectively evaluated loans ACL coverage	0.72%		0.70%
Total loans	$ 213,211		$ 220,652
Allowance for credit loss	$ 1,539		$ 1,541
Total ACL to total loans	0.72%		0.70%

Loans Receivable and Allowan_13

Loans Receivable and Allowance for Credit Losses - Troubled Debt Restructurings on Financing Receivables (Details) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2022 USD ($) loan	Mar. 31, 2022 loan	Sep. 30, 2021 USD ($) loan	Sep. 30, 2022 USD ($) loan security	Sep. 30, 2021 USD ($) loan security	Dec. 31, 2021 USD ($)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	$ 53,580			$ 53,580		$ 65,513
Troubled Debt Restructuring, By Loan Class
Number of Loans | loan				3	14
Balance				$ 5,460	$ 12,495
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	1		8	2	10
Balance	$ 2,885		$ 11,644	$ 4,029	$ 11,775
ACL for TDRs modified during period			0	782	89
Total charge-offs of TDR loans modified	0		0	0	0
ACL for the TDRs that had payment defaults	771		51	771	84
Total charge offs for TDR loans that had payment defaults	0		$ 0	0	$ 0
Payment concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	29,593			$ 29,593		31,955
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan			4		6
Payment concession | Real Estate Loan
Troubled Debt Restructuring, By Loan Class
Number of Loans | security				1	7
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | security					1
Balance			$ 221		$ 221
ACL for TDRs modified during period				$ 2,000	$ 643
Payment concession | Commercial business
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan			1		1
Balance					$ 120
Payment concession | Consumer
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan			3		4
Balance			$ 30		$ 41
Maturity / amortization concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	$ 17,228			$ 17,228		26,411
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan					4
Balance					$ 11,400
Maturity / amortization concession | Real Estate Loan
Troubled Debt Restructuring, By Loan Class
Number of Loans	0			2	7
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan			4	1
Balance			$ 11,400	$ 1,100
ACL for TDRs modified during period				$ 3,500	$ 11,900
Maturity / amortization concession | Commercial business
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan				1
Balance				$ 2,900
Rate concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	$ 6,759			$ 6,759		7,147
Real estate | Residential
Troubled Debt Restructuring, By Loan Class
Number of Loans | loan				0	0
Balance				$ 0	$ 0
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0		0	0	0
Balance	$ 0		$ 0	$ 0	$ 0
Real estate | Commercial | Retail
Troubled Debt Restructuring, By Loan Class
Number of Loans | loan				0	4
Balance				$ 0	$ 6,922
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0		4	1	4
Balance	$ 0		$ 6,988	$ 1,144	$ 6,988
Real estate | Commercial | Hotel & motel
Troubled Debt Restructuring, By Loan Class
Number of Loans | loan				1	0
Balance				$ 1,985	$ 0
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0		0	0	0
Balance	$ 0		$ 0	$ 0	$ 0
Real estate | Commercial | Gas station & car wash
Troubled Debt Restructuring, By Loan Class
Number of Loans | loan				0	1
Balance				$ 0	$ 575
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0		0	0	0
Balance	$ 0		$ 0	$ 0	$ 0
Real estate | Commercial | Mixed use
Troubled Debt Restructuring, By Loan Class
Number of Loans | loan				0	1
Balance				$ 0	$ 4,626
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0		1	0	1
Balance	$ 0		$ 4,626	$ 0	$ 4,626
Real estate | Commercial | Industrial & warehouse
Troubled Debt Restructuring, By Loan Class
Number of Loans | loan				0	0
Balance				$ 0	$ 0
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0		0	0	0
Balance	$ 0		$ 0	$ 0	$ 0
Real estate | Commercial | Other
Troubled Debt Restructuring, By Loan Class
Number of Loans | loan				1	0
Balance				$ 590	$ 0
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0		0	0	0
Balance	$ 0		$ 0	$ 0	$ 0
Real estate | Construction
Troubled Debt Restructuring, By Loan Class
Number of Loans | loan				0	0
Balance				$ 0	$ 0
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0		0	0	0
Balance	$ 0		$ 0	$ 0	$ 0
Real estate | TDR Loans on Accrual Status
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	15,451			15,451		43,806
Real estate | TDR Loans on Accrual Status | Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	15,500			$ 15,500		43,800
Troubled Debt Restructuring, By Loan Class
Number of Loans | loan		31		28
Real estate | TDR Loans on Accrual Status | Payment concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	5,410			$ 5,410		23,196
Real estate | TDR Loans on Accrual Status | Maturity / amortization concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	4,979			4,979		15,449
Real estate | TDR Loans on Accrual Status | Rate concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	5,062			5,062		5,161
Real estate | TDR Loans on Nonaccrual Status
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	23,582			23,582		8,036
Real estate | TDR Loans on Nonaccrual Status | Payment concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	23,369			23,369		7,533
Real estate | TDR Loans on Nonaccrual Status | Maturity / amortization concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	113			113		269
Real estate | TDR Loans on Nonaccrual Status | Rate concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	$ 100			$ 100		234
Commercial business
Troubled Debt Restructuring, By Loan Class
Number of Loans | loan				1	3
Balance				$ 2,885	$ 319
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	1		0	1	1
Balance	$ 2,885		$ 0	$ 2,885	$ 120
Commercial business | TDR Loans on Accrual Status
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	9,921			$ 9,921		8,413
Troubled Debt Restructuring, By Loan Class
Number of Loans | loan		19		13
Commercial business | TDR Loans on Accrual Status | Payment concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	532			$ 532		790
Commercial business | TDR Loans on Accrual Status | Maturity / amortization concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	9,193			9,193		7,284
Commercial business | TDR Loans on Accrual Status | Rate concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	196			196		339
Commercial business | TDR Loans on Nonaccrual Status
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	4,240			4,240		4,942
Commercial business | TDR Loans on Nonaccrual Status | Payment concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	267			267		420
Commercial business | TDR Loans on Nonaccrual Status | Maturity / amortization concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	2,572			2,572		3,109
Commercial business | TDR Loans on Nonaccrual Status | Rate concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	$ 1,401			$ 1,401		1,413
Residential mortgage
Troubled Debt Restructuring, By Loan Class
Number of Loans | loan				0	0
Balance				$ 0	$ 0
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0		0	0	0
Balance	$ 0		$ 0	$ 0	$ 0
Residential mortgage | TDR Loans on Accrual Status
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0			0		0
Residential mortgage | TDR Loans on Accrual Status | Payment concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0			0		0
Residential mortgage | TDR Loans on Accrual Status | Maturity / amortization concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0			0		0
Residential mortgage | TDR Loans on Accrual Status | Rate concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0			0		0
Residential mortgage | TDR Loans on Nonaccrual Status
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0			0		0
Residential mortgage | TDR Loans on Nonaccrual Status | Payment concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0			0		0
Residential mortgage | TDR Loans on Nonaccrual Status | Maturity / amortization concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0			0		0
Residential mortgage | TDR Loans on Nonaccrual Status | Rate concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	$ 0			$ 0		0
Consumer
Troubled Debt Restructuring, By Loan Class
Number of Loans | loan				0	5
Balance				$ 0	$ 53
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans | loan	0		3	0	4
Balance	$ 0		$ 30	$ 0	$ 41
Consumer | TDR Loans on Accrual Status
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	272			$ 272		199
Troubled Debt Restructuring, By Loan Class
Number of Loans | loan		10		9
Consumer | TDR Loans on Accrual Status | Payment concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	15			$ 15		16
Consumer | TDR Loans on Accrual Status | Maturity / amortization concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	257			257		183
Consumer | TDR Loans on Accrual Status | Rate concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0			0		0
Consumer | TDR Loans on Nonaccrual Status
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	114			114		117
Consumer | TDR Loans on Nonaccrual Status | Payment concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0			0		0
Consumer | TDR Loans on Nonaccrual Status | Maturity / amortization concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	114			114		117
Consumer | TDR Loans on Nonaccrual Status | Rate concession
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	$ 0			$ 0		$ 0

Leases - Additional Information

Leases - Additional Information (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) lease	Sep. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)
Lessee, Lease, Description [Line Items]
Extension options, term of extension			5 years
Operating lease right-of-use assets	$ 55,362,000		$ 55,362,000		$ 52,701,000
Operating lease liabilities	59,334,000		59,334,000		$ 57,303,000
Short-term operating lease liability	13,600,000		13,600,000
Long-term operating lease liability	45,700,000		$ 45,700,000
Number of leases extended | lease			9
Number of new leases | lease			1
Rent expense	4,000,000	$ 4,600,000	$ 13,300,000	$ 13,600,000
Number of operating lease commitments not yet commenced | lease			3
Operating leases, not yet commenced	$ 3,300,000		$ 3,300,000
Minimum
Lessee, Lease, Description [Line Items]
Remaining lease term for operating leases	1 year		1 year
Extension options, term of extension			1 year
Operating leases, not yet commenced, term	5 years		5 years
Maximum
Lessee, Lease, Description [Line Items]
Remaining lease term for operating leases	10 years		10 years
Extension options, term of extension			6 years
Operating leases, not yet commenced, term	10 years		10 years

Leases - Net Lease Cost (Detail

Leases - Net Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Leases [Abstract]
Operating lease cost	$ 3,796	$ 3,778	$ 11,623	$ 11,498
Short term lease cost	0	0	0	0
Variable lease cost	855	892	2,434	2,393
Sublease income	(104)	(102)	(312)	(354)
Net lease cost	$ 4,547	$ 4,568	$ 13,745	$ 13,537

Leases - Other Information (Det

Leases - Other Information (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash outflows for operating leases	$ 11,954	$ 10,991
Right-of-use assets obtained in exchange for lease liabilities, net	$ 13,698	$ 965
Weighted-average remaining lease term - operating leases	4 years 8 months 12 days	5 years 4 months 24 days
Weighted-average discount rate - operating leases	2.31%	2.56%

Leases - Maturities of Remainin

Leases - Maturities of Remaining Lease Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Leases [Abstract]
2022	$ 3,838
2023	14,533
2024	13,431
2025	11,680
2026	10,973
2027 and thereafter	8,666
Total lease payments	63,121
Less: imputed interest	3,787
Total lease obligations	$ 59,334	$ 57,303

Deposits (Details)

Deposits (Details) - USD ($)	Sep. 30, 2022	Dec. 31, 2021
Deposits Disclosure [Line Items]
Time Deposits, $250,000 or More	$ 1,450,000,000	$ 1,490,000,000
Brokered deposits	1,560,000,000	810,900,000
Noninterest bearing	5,590,952,000	5,751,870,000
Money market and NOW accounts	5,885,093,000	6,178,850,000
Savings deposits	317,841,000	321,377,000
Time deposits	3,708,323,000	2,788,353,000
Total deposits	$ 15,502,209,000	$ 15,040,450,000
Percent of total deposit balance, by type	100%	100%
Money market and NOW accounts
Deposits Disclosure [Line Items]
Brokered deposits	$ 314,700,000	$ 770,000,000
Percent of total deposit balance, by type	38%	41%
Time deposit accounts
Deposits Disclosure [Line Items]
Brokered deposits	$ 1,250,000,000	$ 40,900,000
Noninterest Bearing Demand Deposits
Deposits Disclosure [Line Items]
Percent of total deposit balance, by type	36%	38%
Savings Deposits
Deposits Disclosure [Line Items]
Percent of total deposit balance, by type	2%	2%
Bank Time Deposits
Deposits Disclosure [Line Items]
Percent of total deposit balance, by type	24%	19%
California State Treasurer
Deposits Disclosure [Line Items]
Time Deposits, $250,000 or More	$ 300,000,000	$ 300,000,000
Required eligible collateral pledge on outstanding deposits, minimum percentage	110%
Securities pledged as collateral	$ 357,100,000	$ 359,800,000

Borrowings - Narrative (Details

Borrowings - Narrative (Details)	9 Months Ended
	Sep. 30, 2022 USD ($) security	Sep. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)
Debt Instrument [Line Items]
Percent of assets	25%
Maximum borrowing capacity	$ 4,520,000,000		$ 4,450,000,000
Percent outstanding advances	100%
FHLB and FRB borrowings	$ 700,000,000		300,000,000
Proceeds from FHLB advances	23,650,885,000	$ 1,540,000,000
FHLB and FRB borrowings	1,072,000,000		300,000,000
Other Borrowings	0		0
Remaining borrowing capacity	3,810,000,000
FHLB Advances
Debt Instrument [Line Items]
Loans pledged as collateral	$ 0		$ 0
Weighted Average
Debt Instrument [Line Items]
FHLB advances, interest rate	3.04%		0.92%
Minimum
Debt Instrument [Line Items]
FHLB advances, interest rate	2.39%
Maximum
Debt Instrument [Line Items]
FHLB advances, interest rate	3.22%
Qualifying Loans
Debt Instrument [Line Items]
Asset balance used to determine maximum borrowing capacity from federal reserve bank	$ 923,200,000
FRB Discount Window
Debt Instrument [Line Items]
Advances from Federal Reserve Bank	$ 372,000,000		$ 0
Percent of qualifying assets (up to)	99%
Number of securities pledged as collateral | security	1
Securities pledged as collateral	$ 1,100,000
Total available borrowing capacity	$ 420,600,000		606,600,000
Interest rate at period end	3.25%
Unsecured Credit Facility with FHLB
Debt Instrument [Line Items]
Unsecured credit facility, maximum borrowing capacity	$ 81,200,000		81,200,000
Mortgage Loans on Real Estate
Debt Instrument [Line Items]
Pledged as collateral, FHLB	$ 7,850,000,000		$ 6,960,000,000

Subordinated Debentures and C_3

Subordinated Debentures and Convertible Notes - Narrative (Details)		3 Months Ended		6 Months Ended	9 Months Ended
	Jun. 07, 2018 $ / shares	Sep. 30, 2022 USD ($) grantorTrust	Sep. 30, 2021 USD ($)	Jun. 30, 2022	Sep. 30, 2022 USD ($) grantorTrust	Sep. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)	Jun. 06, 2018 USD ($)
Subordinated Borrowing [Line Items]
Number of wholly owned subsidiary grantor trusts | grantorTrust		9			9
Amount of pooled trust preferred securities issued		$ 126,000,000			$ 126,000,000
Right to defer consecutive payments of interest, maximum term					5 years
Carrying value of Debentures		106,258,000			$ 106,258,000		$ 105,354,000
Interest on other borrowings and convertible notes		2,936,000	$ 2,290,000		7,878,000	$ 6,892,000
Cumulative Effect, Period of Adoption, Adjustment | Accounting Standards Update 2020-06 | Additional paid-in capital
Subordinated Borrowing [Line Items]
Adjustments to additional paid in capital, equity component of convertible debt, net of tax		18,300,000
Other assets
Subordinated Borrowing [Line Items]
Investment in common trust securities		3,900,000			3,900,000		3,900,000
Carrying Value of Debentures
Subordinated Borrowing [Line Items]
Carrying value of Debentures		106,258,000			106,258,000		105,400,000
Remaining discounts on acquired Debentures		23,600,000			23,600,000		$ 24,500,000
Trust Preferred Securities Subject to Mandatory Redemption
Subordinated Borrowing [Line Items]
Amount of pooled trust preferred securities issued		$ 126,000,000			$ 126,000,000
Percent included in tier one capital, maximum		25%			25%
Excess of percent threshold included in tier two capital		25%			25%
Convertible Notes
Subordinated Borrowing [Line Items]
Aggregate principal amount issued		$ 217,500,000			$ 217,500,000			$ 217,500,000
Interest rate								2%
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%
Repurchase or put option, percentage of principal amount in cash	100%
Interest expense on convertible notes		$ 1,300,000	$ 1,300,000		$ 4,000,000	$ 4,000,000
Number of outstanding years for which non-cash interest expense and issuance cost capitalization expense will be recorded	5 years			5 years	5 years
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 ($)	Sep. 30, 2022	Dec. 31, 2021
Subordinated Borrowing [Line Items]
Trust Preferred Security Amount	$ 126,000,000
Carrying Value of Debentures	106,258,000	$ 105,354,000
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	$ 106,258,000	$ 105,400,000
Nara Capital Trust III
Subordinated Borrowing [Line Items]
Current Rate	6.443%
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	5.362%
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	6.477%
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	4.943%
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	5.362%
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	$ 14,874,000
Wilshire Trust II
Subordinated Borrowing [Line Items]
Current Rate	5.317%
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	$ 16,375,000
Wilshire Trust III
Subordinated Borrowing [Line Items]
Current Rate	4.693%
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	$ 11,671,000
Wilshire Trust IV
Subordinated Borrowing [Line Items]
Current Rate	4.673%
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	$ 18,856,000
Saehan Capital Trust I
Subordinated Borrowing [Line Items]
Current Rate	5.294%
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	$ 15,614,000

Subordinated Debentures and C_5

Subordinated Debentures and Convertible Notes - Schedule of Convertible Debt (Details) - Convertible Notes - USD ($) $ in Thousands		6 Months Ended	9 Months Ended
	Jun. 07, 2018	Jun. 30, 2022	Sep. 30, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Capitalization Period	5 years	5 years	5 years
Gross Carrying Amount
Convertible notes principal balance			$ 217,500	$ 217,500
Issuance costs to be capitalized			(4,119)	(4,119)
Carrying balance of convertible notes			213,381	213,381
Total Capitalization
Issuance costs to be capitalized			3,532	2,828
Carrying balance of convertible notes			3,532	2,828
Carrying Amount
Convertible notes principal balance			217,500	217,500
Issuance costs to be capitalized			(587)	(1,291)
Carrying balance of convertible notes			$ 216,913	$ 216,209

Derivative Financial Instrume_3

Derivative Financial Instruments - Summary of Derivative Notional Amounts and Fair Values (Details) - Interest rate swaps - USD ($) $ in Thousands	6 Months Ended	9 Months Ended
	Jun. 30, 2022	Sep. 30, 2022	Dec. 31, 2021
Other assets | Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount		$ 100,000	$ 100,000
Weighted average remaining term (years)	3 years 3 months 18 days	2 years 6 months
Pay/Received fixed rate (weighted average)		0.49%	0.49%
Received/Pay variable rate (weighted average)		2.74%	0.12%
Estimated fair value		$ 9,161	$ 2,291
Other assets | Not Designated as Hedging Instrument | Correspondent Banks
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount		$ 988,492	$ 148,199
Weighted average remaining term (years)	7 years 2 months 12 days	5 years 2 months 12 days
Pay/Received fixed rate (weighted average)		2.73%	2.92%
Received/Pay variable rate (weighted average)		3.94%	2.08%
Estimated fair value		$ 74,803	$ 3,001
Other assets | Not Designated as Hedging Instrument | Customers
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount		$ 15,969	$ 440,486
Weighted average remaining term (years)	6 years 1 month 6 days	10 years
Pay/Received fixed rate (weighted average)		5.46%	4.03%
Received/Pay variable rate (weighted average)		4.56%	2.20%
Estimated fair value		$ 50	$ 14,906
Other liabilities | Not Designated as Hedging Instrument | Correspondent Banks
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount		$ 15,969	$ 440,486
Weighted average remaining term (years)	6 years 1 month 6 days	10 years
Pay/Received fixed rate (weighted average)		5.46%	4.03%
Received/Pay variable rate (weighted average)		4.56%	2.20%
Estimated fair value		$ (50)	$ (14,906)
Other liabilities | Not Designated as Hedging Instrument | Customers
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount		$ 988,492	$ 148,199
Weighted average remaining term (years)	7 years 2 months 12 days	5 years 2 months 12 days
Pay/Received fixed rate (weighted average)		2.73%	2.92%
Received/Pay variable rate (weighted average)		3.94%	2.08%
Estimated fair value		$ (74,803)	$ (3,001)

Derivative Financial Instrume_4

Derivative Financial Instruments - Narrative (Details)	3 Months Ended		6 Months Ended	9 Months Ended
	Sep. 30, 2022 USD ($) derivative	Sep. 30, 2021 USD ($)	Jun. 30, 2022	Sep. 30, 2022 USD ($) derivative	Sep. 30, 2021 USD ($)	Dec. 31, 2021 USD ($) derivative
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Interest Rate Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	$ (511,000)			$ (561,000)
Interest Expense	35,996,000	$ 12,570,000		63,978,000	$ 41,911,000
Risk participation agreement | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount	127,400,000			127,400,000		$ 123,900,000
Credit valuation adjustment	20,000			20,000		93,000
Interest rate swaps | Reclassification out of Accumulated Other Comprehensive Income | Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Interest Expense		$ (88,000)			$ (227,000)
Interest rate swaps | Not Designated as Hedging Instrument | Other assets | Correspondent Banks
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount	988,492,000			$ 988,492,000		148,199,000
Weighted average remaining term (years)			7 years 2 months 12 days	5 years 2 months 12 days
Interest rate swaps | Not Designated as Hedging Instrument | Other assets | Customers
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount	15,969,000			$ 15,969,000		440,486,000
Weighted average remaining term (years)			6 years 1 month 6 days	10 years
Interest rate swaps | Not Designated as Hedging Instrument | Other liabilities | Correspondent Banks
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount	15,969,000			$ 15,969,000		440,486,000
Weighted average remaining term (years)			6 years 1 month 6 days	10 years
Interest rate swaps | Not Designated as Hedging Instrument | Other liabilities | Customers
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount	988,492,000			$ 988,492,000		148,199,000
Weighted average remaining term (years)			7 years 2 months 12 days	5 years 2 months 12 days
Interest rate swaps | Designated as Hedging Instrument | Other assets
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount	100,000,000			$ 100,000,000		100,000,000
Weighted average remaining term (years)			3 years 3 months 18 days	2 years 6 months
Interest rate swaps | Designated as Hedging Instrument | Cash Flow Hedge
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount	$ 100,000,000			$ 100,000,000		$ 100,000,000
Number of derivative instruments held | derivative	1			1		1
Interest Rate Swap, forward starting | Designated as Hedging Instrument | Cash Flow Hedge
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount	$ 475,000,000			$ 475,000,000
Weighted average remaining term (years)	4 years 6 months
Interest Rate Lock Commitments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount	$ 1,500,000			1,500,000		$ 17,400,000
Foreign Exchange Contract | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gain (loss) on fair value of foreign exchange contracts	9,000			9,000
Foreign exchange contracts						$ 0
Foreign Exchange Contract | Not Designated as Hedging Instrument | Other assets | Correspondent Banks
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount	2,600,000			2,600,000
Foreign exchange contracts	130,000			130,000
Foreign Exchange Contract | Not Designated as Hedging Instrument | Other assets | Customers
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount	338,000			338,000
Foreign exchange contracts	21,000			21,000
Foreign Exchange Contract | Not Designated as Hedging Instrument | Other liabilities | Correspondent Banks
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount	338,000			338,000
Foreign exchange contracts	(21,000)			(21,000)
Foreign Exchange Contract | Not Designated as Hedging Instrument | Other liabilities | Customers
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount	2,600,000			2,600,000
Foreign exchange contracts	$ (122,000)			$ (122,000)

Derivative Financial Instrume_5

Derivative Financial Instruments - Summary of Derivative Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Interest Rate Lock Commitments
Derivative [Line Items]
Notional amount, derivative asset	$ 468	$ 16,518
Fair value, derivative asset	1	230
Notional amount, derivative liability	1,220	907
Fair value, derivative liability	(39)	(2)
Forward Contracts | Short
Derivative [Line Items]
Notional amount, derivative asset	1,000	6,392
Fair value, derivative asset	41	17
Notional amount, derivative liability	500	25,305
Fair value, derivative liability	$ (3)	$ (74)

Commitments and Contingencies_2

Commitments and Contingencies (Details) - USD ($)	Sep. 30, 2022	Dec. 31, 2021
Supply Commitment [Line Items]
Loss contingencies for all legal claims	$ 20,000	$ 52,000
Loss contingencies for all legal claims	20,000	52,000
Commitments to extend credit
Supply Commitment [Line Items]
Commitments and letters of credit	2,787,710,000	2,329,421,000
Standby letters of credit
Supply Commitment [Line Items]
Commitments and letters of credit	135,056,000	126,137,000
Other letters of credit
Supply Commitment [Line Items]
Commitments and letters of credit	26,937,000	56,333,000
Commitments to fund investments in affordable housing partnerships
Supply Commitment [Line Items]
Commitments and letters of credit	$ 12,399,000	$ 9,514,000

Goodwill, Intangible Assets, _3

Goodwill, Intangible Assets, and Servicing Assets - Intangible Assets (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 464,450,000		$ 464,450,000		$ 464,450,000
Goodwill impairment	0		0
Core Deposits
Finite-Lived Intangible Assets [Line Items]
Amortization expense related to core deposit intangible assets	486,000	$ 509,000	1,500,000	$ 1,500,000
Gross Amount	20,901,000		20,901,000		20,901,000
Accumulated Amortization	(14,689,000)		(14,689,000)		(13,230,000)
Carrying Amount	6,212,000		$ 6,212,000		7,671,000
Foster Bankshares acquisition | Core Deposits
Finite-Lived Intangible Assets [Line Items]
Amortization Period			10 years
Gross Amount	2,763,000		$ 2,763,000		2,763,000
Accumulated Amortization	(2,627,000)		(2,627,000)		(2,504,000)
Carrying Amount	136,000		$ 136,000		259,000
Wilshire Bancorp acquisition | Core Deposits
Finite-Lived Intangible Assets [Line Items]
Amortization Period			10 years
Gross Amount	18,138,000		$ 18,138,000		18,138,000
Accumulated Amortization	(12,062,000)		(12,062,000)		(10,726,000)
Carrying Amount	$ 6,076,000		$ 6,076,000		$ 7,412,000
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		6 Months Ended	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Jun. 30, 2022	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Servicing Asset at Amortized Cost, Balance [Roll Forward]
Balance at beginning of period	$ 11,215	$ 11,566	$ 10,418	$ 10,418	$ 12,692
Additions through originations of servicing assets	1,338	710		4,228	2,039
Amortization	(952)	(1,489)		(3,045)	(3,944)
Balance at end of period	11,601	$ 10,787	$ 11,215	11,601	$ 10,787
Principal balances of loans serviced for other institutions	$ 1,100,000			$ 1,100,000		$ 1,040,000
SBA Servicing Assets: Weighted-average discount rate			11.20%	9.67%
SBA Servicing Assets: Constant prepayment rate			14.64%	12.05%
Mortgage Servicing Assets: Weighted-average discount rate			8.63%	11.88%
Mortgage Servicing Assets: Constant prepayment rate			9.58%	9.63%

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Income tax provision	$ 19,679,000	$ 19,912,000	$ 59,561,000	$ 51,644,000
Pretax income	$ 73,427,000	$ 75,411,000	$ 226,135,000	$ 204,593,000
Effective income tax rate	26.80%	26.40%	26.34%	25.24%
Unrecognized tax benefits	$ 3,300,000		$ 3,300,000		$ 3,300,000
Interest accrued	475,000	$ 387,000	475,000	$ 387,000
Penalties accrued	0		0		$ 0
Decrease in unrecognized tax benefits is reasonably possible	$ 789,000		$ 789,000

Fair Value Measurements - Asset

Fair Value Measurements - Assets and Liabilities Measured at Fair Value, Recurring (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2022 USD ($)	Dec. 31, 2021 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Costs to sell percentage	8.50%
Assets:
Equity investments with readily determinable fair value	$ 42,324	$ 57,860
Recurring basis
Assets:
Equity investments with readily determinable fair value	4,294	26,823
Recurring basis | Designated as Hedging Instrument
Liabilities:
Derivative liabilities	163	93
Recurring basis | Interest rate swaps
Assets:
Derivative assets	74,853	17,907
Liabilities:
Derivative liabilities	74,853	17,907
Recurring basis | Mortgage banking derivatives
Assets:
Derivative assets	42	247
Liabilities:
Derivative liabilities	42	76
Recurring basis | Other derivatives
Assets:
Derivative assets	27,343	2,291
Liabilities:
Derivative liabilities	163	93
Recurring basis | Collateralized mortgage obligations
Assets:
Securities available for sale:	824,327	1,026,430
Recurring basis | Mortgage-backed securities: Residential
Assets:
Securities available for sale:	456,590	759,224
Recurring basis | Mortgage-backed securities: Commercial
Assets:
Securities available for sale:	379,615	599,402
Recurring basis | Corporate securities
Assets:
Securities available for sale:	18,715	22,484
Recurring basis | Municipal securities
Assets:
Securities available for sale:	162,434	105,284
Recurring basis | Asset-backed Securities
Assets:
Securities available for sale:	143,903	153,451
Recurring basis | US Treasury Notes Securities
Assets:
Securities available for sale:	3,889
Recurring basis | Agency Securities
Assets:
Securities available for sale:	3,875
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets:
Equity investments with readily determinable fair value	4,294	26,823
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Interest rate swaps
Assets:
Derivative assets	0	0
Liabilities:
Derivative liabilities	0	0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Mortgage banking derivatives
Assets:
Derivative assets	0	0
Liabilities:
Derivative liabilities	0	0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other derivatives
Assets:
Derivative assets	0	0
Liabilities:
Derivative liabilities	0	0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Collateralized mortgage obligations
Assets:
Securities available for sale:	0	0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Mortgage-backed securities: Residential
Assets:
Securities available for sale:	0	0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Mortgage-backed securities: Commercial
Assets:
Securities available for sale:	0	0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate securities
Assets:
Securities available for sale:	0	0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Municipal securities
Assets:
Securities available for sale:	0	0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Asset-backed Securities
Assets:
Securities available for sale:	0	0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | US Treasury Notes Securities
Assets:
Securities available for sale:	3,889
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Agency Securities
Assets:
Securities available for sale:	0
Recurring basis | Significant Other Observable Inputs (Level 2)
Assets:
Equity investments with readily determinable fair value	0	0
Recurring basis | Significant Other Observable Inputs (Level 2) | Designated as Hedging Instrument
Liabilities:
Derivative liabilities		0
Recurring basis | Significant Other Observable Inputs (Level 2) | Interest rate swaps
Assets:
Derivative assets	74,853	17,907
Liabilities:
Derivative liabilities	74,853	17,907
Recurring basis | Significant Other Observable Inputs (Level 2) | Mortgage banking derivatives
Assets:
Derivative assets	42	247
Liabilities:
Derivative liabilities	42	76
Recurring basis | Significant Other Observable Inputs (Level 2) | Other derivatives
Assets:
Derivative assets	27,343	2,291
Liabilities:
Derivative liabilities	143	0
Recurring basis | Significant Other Observable Inputs (Level 2) | Collateralized mortgage obligations
Assets:
Securities available for sale:	824,327	1,026,430
Recurring basis | Significant Other Observable Inputs (Level 2) | Mortgage-backed securities: Residential
Assets:
Securities available for sale:	456,590	759,224
Recurring basis | Significant Other Observable Inputs (Level 2) | Mortgage-backed securities: Commercial
Assets:
Securities available for sale:	379,615	599,402
Recurring basis | Significant Other Observable Inputs (Level 2) | Corporate securities
Assets:
Securities available for sale:	18,715	22,484
Recurring basis | Significant Other Observable Inputs (Level 2) | Municipal securities
Assets:
Securities available for sale:	161,520	104,246
Recurring basis | Significant Other Observable Inputs (Level 2) | Asset-backed Securities
Assets:
Securities available for sale:	143,903	153,451
Recurring basis | Significant Other Observable Inputs (Level 2) | US Treasury Notes Securities
Assets:
Securities available for sale:	0
Recurring basis | Significant Other Observable Inputs (Level 2) | Agency Securities
Assets:
Securities available for sale:	3,875
Recurring basis | Significant Unobservable Inputs (Level 3)
Assets:
Equity investments with readily determinable fair value	0	0
Recurring basis | Significant Unobservable Inputs (Level 3) | Interest rate swaps
Assets:
Derivative assets	0	0
Liabilities:
Derivative liabilities	0	0
Recurring basis | Significant Unobservable Inputs (Level 3) | Mortgage banking derivatives
Assets:
Derivative assets	0	0
Liabilities:
Derivative liabilities	0	0
Recurring basis | Significant Unobservable Inputs (Level 3) | Other derivatives
Assets:
Derivative assets	0	0
Liabilities:
Derivative liabilities	20	93
Recurring basis | Significant Unobservable Inputs (Level 3) | Collateralized mortgage obligations
Assets:
Securities available for sale:	0	0
Recurring basis | Significant Unobservable Inputs (Level 3) | Mortgage-backed securities: Residential
Assets:
Securities available for sale:	0	0
Recurring basis | Significant Unobservable Inputs (Level 3) | Mortgage-backed securities: Commercial
Assets:
Securities available for sale:	0	0
Recurring basis | Significant Unobservable Inputs (Level 3) | Corporate securities
Assets:
Securities available for sale:	0	0
Recurring basis | Significant Unobservable Inputs (Level 3) | Municipal securities
Assets:
Securities available for sale:	914	1,038
Recurring basis | Significant Unobservable Inputs (Level 3) | Asset-backed Securities
Assets:
Securities available for sale:	0	$ 0
Recurring basis | Significant Unobservable Inputs (Level 3) | US Treasury Notes Securities
Assets:
Securities available for sale:	0
Recurring basis | Significant Unobservable Inputs (Level 3) | Agency Securities
Assets:
Securities available for sale:	$ 0
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 | Inventory | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate	0.50
Discount Rate | Inventory | 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		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	$ 1,019	$ 1,058
Change in fair value included in other comprehensive income (loss)	(105)	(3)
Ending Balance	914	1,055	$ 914	$ 1,055
Other derivatives
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	31	64	93	398
Change in fair value included in other comprehensive income (loss)	(11)	(12)	(73)	(346)
Ending Balance	20	52	20	52
Municipal Bonds [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance			1,038	1,022
Change in fair value included in other comprehensive income (loss)			(124)	33
Ending Balance	$ 914	$ 1,055	$ 914	$ 1,055

Fair Value Measurements - Ass_2

Fair Value Measurements - Assets Measured at Fair Value, Non-Recurring (Details) - Non-recurring basis - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Real estate loans
Assets:
Assets	$ 6,368	$ 12,293
Commercial business
Assets:
Assets	5,794	3,656
OREO
Assets:
Assets	1,050	2,167
Loans held for sale, net
Assets:
Assets		26,154
Quoted Prices in Active Markets for Identical Assets (Level 1) | Real estate loans
Assets:
Assets	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Commercial business
Assets:
Assets	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | OREO
Assets:
Assets	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Loans held for sale, net
Assets:
Assets		0
Significant Other Observable Inputs (Level 2) | Real estate loans
Assets:
Assets	0	0
Significant Other Observable Inputs (Level 2) | Commercial business
Assets:
Assets	0	0
Significant Other Observable Inputs (Level 2) | OREO
Assets:
Assets	0	0
Significant Other Observable Inputs (Level 2) | Loans held for sale, net
Assets:
Assets		26,154
Significant Unobservable Inputs (Level 3) | Real estate loans
Assets:
Assets	6,368	12,293
Significant Unobservable Inputs (Level 3) | Commercial business
Assets:
Assets	5,794	3,656
Significant Unobservable Inputs (Level 3) | OREO
Assets:
Assets	$ 1,050	2,167
Significant Unobservable Inputs (Level 3) | Loans held for sale, net
Assets:
Assets		$ 0

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		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Loans Receivable
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total gains (losses), fair value	$ 0	$ (6,121)	$ 0	$ (17,900)
Loans Receivable | Real estate loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total gains (losses), fair value	(962)	(1,083)	(1,573)	(1,496)
Loans Receivable | Commercial business
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total gains (losses), fair value	(3,323)	(2,025)	(3,323)	(2,025)
OREO
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total gains (losses), fair value	$ (337)	$ (259)	$ (593)	$ (582)

Fair Value Measurements - Carry

Fair Value Measurements - Carrying Amounts and Estimated Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Financial Assets:
Equity investments without readily determinable fair values	$ 38,000	$ 31,037
Financial Liabilities:
Investment securities held to maturity, at amortized cost; fair value of $258,677 and $0 at September 30, 2022 and December 31, 2021, respectively	271,185	0
Debt Securities, Held-to-maturity, Fair Value	258,677	0
Level 1 | Carrying Amount
Financial Assets:
Cash and cash equivalents	331,336	316,266
Financial Liabilities:
Convertible notes, net	216,913	216,209
Level 1 | Estimated Fair Value
Financial Assets:
Cash and cash equivalents	331,336	316,266
Financial Liabilities:
Convertible notes, net	211,562	214,612
Level 2/3 | Carrying Amount
Financial Assets:
Accrued interest receivable	42,363	41,842
Level 2/3 | Estimated Fair Value
Financial Assets:
Accrued interest receivable	42,363	41,842
Level 2 | Carrying Amount
Financial Assets:
Interest bearing deposits in other financial institutions	3,968	12,851
Equity investments without readily determinable fair values	38,030
Loans held for sale	41,989	99,049
Customers’ liabilities on acceptances	570	1,521
Financial Liabilities:
Noninterest bearing deposits	5,590,952	5,751,870
Saving and other interest bearing demand deposits	6,202,934	6,500,227
Time deposits	3,708,323	2,788,353
FHLB and FRB borrowings, Fair Value Disclosure	1,072,000
FHLB and FRB borrowings		300,000
Subordinated debentures	106,258	105,354
Accrued interest payable	11,713	4,272
Acceptances outstanding	570	1,521
Level 2 | Estimated Fair Value
Financial Assets:
Interest bearing deposits in other financial institutions	3,945	12,853
Equity investments without readily determinable fair values	38,030	31,037
Loans held for sale	43,973	103,767
Customers’ liabilities on acceptances	570	1,521
Financial Liabilities:
Noninterest bearing deposits	5,590,952	5,751,870
Saving and other interest bearing demand deposits	6,202,934	6,500,227
Time deposits	3,706,939	2,790,596
FHLB and FRB borrowings, Fair Value Disclosure	1,072,080
FHLB and FRB borrowings		301,936
Subordinated debentures	107,870	117,961
Accrued interest payable	11,713	4,272
Acceptances outstanding	570	1,521
Level 3 | Carrying Amount
Financial Assets:
Loans receivable, net	15,330,626	13,812,193
Servicing assets, net	11,601	10,418
Level 3 | Estimated Fair Value
Financial Assets:
Loans receivable, net	14,937,811	13,698,579
Servicing assets, net	$ 16,650	$ 13,500

Stockholders' Equity - Discussi

Stockholders' Equity - Discussion of Equity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Jun. 30, 2022	Dec. 31, 2021	Jun. 30, 2021	Dec. 31, 2020
Equity [Abstract]
Total stockholders’ equity	$ 1,975,725	$ 2,074,398	$ 1,975,725	$ 2,074,398	$ 2,000,369	$ 2,092,983	$ 2,092,870	$ 2,053,745
Dividends paid (in dollars per share)	$ 0.14	$ 0.14	$ 0.42	$ 0.42
Allocated share-based compensation expense	$ 3,200	$ 2,200	$ 9,300	$ 6,800
Gains (Losses) on Sales of Other Real Estate	198	$ 12	178	(1)
Repurchase of treasury stock	$ 0		$ 14,667	$ 47,198
Common stock repurchased and recorded as treasury stock (in shares)	0		1,038,986

Stockholders' Equity - Changes

Stockholders' Equity - Changes in Accumulated Other Comprehensive (Loss) Income (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	$ 2,000,369,000	$ 2,092,870,000	$ 2,092,983,000	$ 2,053,745,000
Unrealized net losses on securities available for sale	(112,043,000)	(16,433,000)	(308,974,000)	(43,050,000)
OCI, Debt Securities, Available-for-Sale, Transfer to Held-to-Maturity, Adjustment from AOCI for Amortization of Gain (Loss), before Tax	0	0	(36,576,000)	0
Unrealized net gains on interest rate swaps used for cash flow hedge	18,893,000	120,000	24,901,000	1,643,000
Reclassification adjustments for net losses realized in net income	662,000	88,000	688,000	227,000
Tax effect	27,660,000	4,717,000	94,838,000	11,970,000
Other comprehensive loss, net of tax	(64,828,000)	(11,508,000)	(225,123,000)	(29,210,000)
Balance at end of period	1,975,725,000	2,074,398,000	1,975,725,000	2,074,398,000
Share repurchase program, authorized amount	$ 50,000,000		$ 50,000,000
Common stock repurchased and recorded as treasury stock (in shares)	0		1,038,986
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax	$ 511,000	(88,000)	$ 561,000	(227,000)
Reclassification from AOCI, Debt Securities transferred from AFS to HTM amortization of unrealized losses, before tax	1,200,000	0	1,200,000	0
Accumulated other comprehensive income (loss), net
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(171,707,000)	15,051,000	(11,412,000)	32,753,000
Other comprehensive loss, net of tax	(64,828,000)	(11,508,000)	(225,123,000)	(29,210,000)
Balance at end of period	$ (236,535,000)	$ 3,543,000	$ (236,535,000)	$ 3,543,000

Stock-Based Compensation - Plan

Stock-Based Compensation - Plan Description (Details) - shares	9 Months Ended
	Sep. 30, 2022	May 23, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for future grant (in shares)	1,463,349
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period	20,000
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%
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) - Stock options $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2022 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding - beginning of period (in shares) | shares	814,877
Granted (in shares) | shares	0
Exercised (in shares) | shares	(105,510)
Expired (in shares) | shares	(20,000)
Forfeited (in shares) | shares	0
Outstanding - end of period (in shares) | shares	689,367
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Outstanding - beginning of period, weighted-average exercise price per share (usd per share) | $ / shares	$ 15.17
Granted - weighted average exercise price (usd per share) | $ / shares	0
Exercised - weighted average exercise price (usd per share) | $ / shares	5.02
Expired - weighted-average exercise price per share (usd per share) | $ / shares	17.18
Forfeited - weighted average exercise price (usd per share) | $ / shares	0
Outstanding - end of period, weighted-average exercise price per share (usd per share) | $ / shares	$ 16.66
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Options exercisable - end of period (in shares) | shares	689,367
Options exercisable, weighted-average exercise price per share (usd per share) | $ / shares	$ 16.66
Outstanding, weighted-average remaining contractual life (years)	3 years 2 months 19 days
Options exercisable, weighted-average remaining contractual life (years)	3 years 2 months 19 days
Outstanding, aggregate intrinsic value | $	$ 0
Options exercisable, aggregate intrinsic value | $	$ 0

Stock-Based Compensation - Rest

Stock-Based Compensation - Restricted Stock and Performance Unit Activity (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]
Allocated share-based compensation expense	$ 3,200,000	$ 2,200,000	$ 9,300,000	$ 6,800,000
Tax benefit from compensation expense	865,000	579,000	2,400,000	1,700,000
Unrecognized compensation expense related to non-vested stock option grants	$ 0		$ 0
Restricted stock and performance units
Number of Shares
Outstanding - beginning of period (in shares)			1,561,197
Granted (in shares)			981,558
Vested (in shares)			(616,521)
Forfeited (in shares)			(168,217)
Outstanding - end of period (in shares)	1,758,017		1,758,017
Weighted-Average Grant Date Fair Value
Outstanding - beginning of period (in dollars per share)			$ 12.08
Granted (in dollars per share)			15.93
Vested (in dollars per share)			12.66
Forfeited (in dollars per share)			13.50
Outstanding - end of period (in dollars per share)	$ 13.89		$ 13.89
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			$ 9,500,000	9,400,000
Total compensation cost not yet recognized, period for recognition			1 year 10 months 24 days
Unrecognized compensation expense related to non-vested equity instruments other than options	$ 16,500,000		$ 16,500,000
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%
Maximum amount of common shares purchased under ESPP of employee's base salary, percent	20%		20%
Cap amount for shares purchased per employee			$ 25,000
Allocated share-based compensation expense	$ 50,000	$ 219,000	$ 284,000	$ 296,000

Regulatory Matters (Details)

Regulatory Matters (Details) $ in Thousands	Sep. 30, 2022 USD ($)	Dec. 31, 2021 USD ($)
Bank Subsidiary
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common equity Tier 1 capital, Actual Amount	$ 2,014,788	$ 1,947,914
Common equity Tier 1 capital, Actual Ratio	0.1181	0.1296
Total capital (to risk-weighted assets), Amount
Total capital, Actual	$ 2,152,241	$ 2,056,675
Tier I capital (to risk-weighted assets), Amount
Tier 1 capital, Actual	2,014,788	1,947,914
Tier I capital (to average assets), Amount
Tier 1 capital, Actual	$ 2,014,788	$ 1,947,914
Total capital and Tier I capital (to risk-weighted assets), Ratio
Total capital (to Risk Weighted Assets), Actual	0.1262	0.1368
Total capital (to Risk Weighted Assets), Required For Capital Adequacy Purposes	0.0800	0.0800
Tier 1 capital (to Risk Weighted Assets), Actual	0.1181	0.1296
Tier 1 capital (to Risk Weighted Assets), Required For Capital Adequacy Purposes	0.0600	0.0600
Tier 1 capital (to Risk Weighted Assets), Required To Be Well Capitalized Under Prompt Corrective Action Provisions	0.0800	0.0800
Tier I capital (to average assets), Ratio
Tier I Capital (to Average Assets), Actual (Leverage)	0.1108	0.1120
Tier I Capital (to Average Assets), Minimum For Capital Adequacy Purposes (Leverage)	0.0400	0.0400
Banking Regulation, Common Equity Tier One Risk-Based Capital, Capital Adequacy, Minimum	$ 767,682	$ 676,328
Total capital, Required For Capital Adequacy Purposes	1,364,769	1,202,361
Tier 1 capital, Required For Capital Adequacy Purposes	1,023,577	901,771
Tier 1 capital, Required For Capital Adequacy Purposes	727,200	695,593
Common equity Tier 1 capital, Required To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	1,108,875	976,919
Total capital, Required To Be Well Capitalized Under Prompt Corrective Action Provisions	$ 1,705,961	$ 1,502,952
Total capital (to Risk Weighted Assets), Required To Be Well Capitalized Under Prompt Corrective Action Provisions	0.1000	0.1000
Tier 1 capital, Required To Be Well Capitalized Under Prompt Corrective Action Provisions	$ 1,364,769	$ 1,202,361
Tier 1 capital, Required To Be Well Capitalized Under Prompt Corrective Action Provisions	$ 909,000	$ 869,491
Tier I Capital (to Average Assets), Minimum to be Well Capitalized Under Prompt Corrective Action Provisions (Leverage)	0.0500	0.0500
Company
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common equity Tier 1 capital, Actual Amount	$ 1,760,843	$ 1,657,754
Common equity Tier 1 capital, Actual Ratio	0.1032	0.1103
Total capital (to risk-weighted assets), Amount
Total capital, Actual	$ 2,000,653	$ 1,867,968
Total capital, Minimum Capital Adequacy With Capital Conservation Buffer	1,791,862	1,578,811
Tier I capital (to risk-weighted assets), Amount
Tier 1 capital, Actual	1,863,200	1,759,207
Tier 1 capital, Minimum Capital Adequacy With Capital Conservation Buffer	1,450,555	1,278,085
Tier I capital (to average assets), Amount
Tier 1 capital, Actual	$ 1,863,200	$ 1,759,207
Total capital and Tier I capital (to risk-weighted assets), Ratio
Total capital (to Risk Weighted Assets), Actual	0.1172	0.1242
Total capital (to Risk Weighted Assets), Required For Capital Adequacy Purposes	0.0800	0.0800
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	0.1092	0.1170
Tier 1 capital (to Risk Weighted Assets), Required For Capital Adequacy Purposes	0.0600	0.0600
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)	0.1025	0.1011
Tier I Capital (to Average Assets), Minimum For Capital Adequacy Purposes (Leverage)	0.0400	0.0400
Banking Regulation, Common Equity Tier One Risk-Based Capital, Capital Adequacy, Minimum		$ 676,633
Total capital, Required For Capital Adequacy Purposes	$ 1,365,228	1,202,903
Tier 1 capital, Required For Capital Adequacy Purposes	1,023,921	902,178
Tier 1 capital, Required For Capital Adequacy Purposes	727,401	695,795
Bank
Total capital (to risk-weighted assets), Amount
Total capital, Minimum Capital Adequacy With Capital Conservation Buffer	1,791,259	1,578,099
Tier I capital (to risk-weighted assets), Amount
Tier 1 capital, Minimum Capital Adequacy With Capital Conservation Buffer	$ 1,450,067	$ 1,277,509
Total capital and Tier I capital (to risk-weighted assets), Ratio
Total capital (to Risk Weighted assets), Minimum Capital Adequacy With Capital Conservation Buffer	10.50%	10.50%
Tier 1 capital (to Risk Weighted Assets), Minimum Capital Adequacy With Capital Conservation Buffer	8.50%	8.50%
Common Equity Tier 1 | Company
Tier I capital (to risk-weighted assets), Amount
Tier 1 capital, Minimum Capital Adequacy With Capital Conservation Buffer	$ 1,194,575	$ 1,052,540
Total capital and Tier I capital (to risk-weighted assets), Ratio
Tier 1 capital (to Risk Weighted Assets), Required For Capital Adequacy Purposes	0.0450	0.0450
Tier 1 capital (to Risk Weighted Assets), Minimum Capital Adequacy With Capital Conservation Buffer	7%	7%
Tier I capital (to average assets), Ratio
Tier 1 capital, Required For Capital Adequacy Purposes	$ 767,941
Common Equity Tier 1 | Bank
Tier I capital (to risk-weighted assets), Amount
Tier 1 capital, Minimum Capital Adequacy With Capital Conservation Buffer	$ 1,194,173	$ 1,052,066
Total capital and Tier I capital (to risk-weighted assets), Ratio
Tier 1 capital (to Risk Weighted Assets), Minimum Capital Adequacy With Capital Conservation Buffer	7%	7%
Common equity tier 1 capital | Bank Subsidiary
Total capital and Tier I capital (to risk-weighted assets), Ratio
Tier 1 capital (to Risk Weighted Assets), Required For Capital Adequacy Purposes	0.0450	0.0450
Tier 1 capital (to Risk Weighted Assets), Required To Be Well Capitalized Under Prompt Corrective Action Provisions	0.0650	0.0650

Revenue Recognition - Service C

Revenue Recognition - Service Charged on Deposit Accounts (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Disaggregation of Revenue [Line Items]
Service fees on deposit accounts	$ 2,535	$ 1,814	$ 6,779	$ 5,381
Wire transfer fees	856	836	2,614	2,603
Wire transfer fees
Disaggregation of Revenue [Line Items]
Wire transfer fees	765	766	2,254	2,256
Foreign exchange fees
Disaggregation of Revenue [Line Items]
Wire transfer fees	91	70	360	347
Noninterest Bearing Deposits
Disaggregation of Revenue [Line Items]
Service fees on deposit accounts	2,512	1,793	6,709	5,313
Noninterest Bearing Deposits | Monthly service charges
Disaggregation of Revenue [Line Items]
Service fees on deposit accounts	250	259	751	808
Noninterest Bearing Deposits | Customer analysis charges
Disaggregation of Revenue [Line Items]
Service fees on deposit accounts	1,426	847	3,541	2,332
Noninterest Bearing Deposits | NSF charges
Disaggregation of Revenue [Line Items]
Service fees on deposit accounts	749	606	2,149	1,921
Noninterest Bearing Deposits | Other service charges
Disaggregation of Revenue [Line Items]
Service fees on deposit accounts	87	81	268	252
Interest-bearing Deposits | Monthly service charges
Disaggregation of Revenue [Line Items]
Service fees on deposit accounts	$ 23	$ 21	$ 70	$ 68

Revenue Recognition - OREO Inco

Revenue Recognition - OREO Income (Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenue from Contract with Customer [Abstract]
Net losses (gains) on sales of OREO	$ (198)	$ (12)	$ (178)	$ 1