Hope Bancorp (HOPE) 10-Q 8 Nov 24 2024 Q3 Quarterly report Financial data

Cover

Cover - shares	9 Months Ended
	Sep. 30, 2024	Nov. 01, 2024
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2024
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)		120,738,974
Amendment Flag	false
Document Fiscal Year Focus	2024
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, 2024	Dec. 31, 2023
Cash and cash equivalents:
Cash and due from banks	$ 170,674	$ 172,813
Interest earning cash in other banks	510,183	1,756,154
Total cash and cash equivalents	680,857	1,928,967
Investment securities available for sale (“AFS”), at fair value	1,920,981	2,145,059
Amortized Cost	256,320	263,912
Equity investments	39,908	43,750
Loans held for sale, at lower of cost or fair value	25,714	3,408
Loans receivable, net of allowance for credit losses of $153,270 and $158,694 at September 30, 2024 and December 31, 2023, respectively	13,464,718	13,694,925
Other real estate owned (“OREO”), net	0	63
Federal Home Loan Bank (“FHLB”) stock, at cost	17,250	17,250
Premises and equipment, net	51,543	50,611
Accrued interest receivable	51,898	61,720
Deferred tax assets, net	122,538	135,215
Bank owned life insurance (“BOLI”)	89,726	89,061
Investments in affordable housing partnerships	33,010	54,474
Operating lease right-of-use assets (“ROU”), net	42,071	46,611
Goodwill	464,450	464,450
Core deposit intangible assets, net	2,732	3,935
Servicing assets, net	9,339	9,631
Other assets	81,134	118,480
Total assets	17,354,189	19,131,522
Deposits:
Noninterest bearing	3,722,985	3,914,967
Interest bearing:
Money market and NOW accounts	4,289,042	4,169,543
Savings deposits	724,263	702,486
Time deposits	5,993,208	5,966,757
Total deposits	14,729,498	14,753,753
FHLB and FRB borrowings	100,000	1,795,726
Convertible notes and subordinated debentures, net	109,249	108,269
Accrued interest payable	107,017	168,174
Operating lease liabilities	47,015	52,670
Commitments to fund investments in affordable housing partnerships	0	21,017
Other liabilities	91,625	110,670
Total liabilities	15,184,404	17,010,279
STOCKHOLDERS’ EQUITY:
Common stock, $0.001 par value; 300,000,000 and 150,000,000 authorized shares at September 30, 2024 and December 31, 2023, respectively: issued and outstanding 138,120,743 and 120,737,908 shares, respectively, at September 30, 2024, and issued and outstanding 137,509,621 and 120,126,786 shares, respectively, at December 31, 2023	138	138
Additional paid-in capital	1,442,993	1,439,963
Retained earnings	1,174,100	1,150,547
Treasury stock, at cost; 17,382,835 and 17,382,835 shares at September 30, 2024 and December 31, 2023, respectively	(264,667)	(264,667)
Accumulated other comprehensive loss, net	(182,779)	(204,738)
Total stockholders’ equity	2,169,785	2,121,243
Total liabilities and stockholders’ equity	$ 17,354,189	$ 19,131,522

Consolidated Statements Of Fi_2

Consolidated Statements Of Financial Condition (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Fair Value	$ 246,231	$ 250,518
Total	$ 153,270	$ 158,694
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	300,000,000	150,000,000
Common stock, shares issued (in shares)	138,120,743	137,509,621
Common stock, shares outstanding (in shares)	120,737,908	120,126,786
Treasury stock, at cost, shares repurchased (in shares)	17,382,835	17,382,835

Consolidated Statements Of Inco

Consolidated Statements Of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
INTEREST INCOME:
Interest and fees on loans	$ 210,022	$ 229,937	$ 633,331	$ 671,543
Interest on investment securities	16,741	17,006	51,619	47,665
Interest income from cash and deposits at other banks	7,507	28,115	39,974	58,332
Interest on other investments	814	735	2,435	2,114
Total interest income	235,084	275,793	727,359	779,654
INTEREST EXPENSE:
Interest on deposits	127,193	117,854	373,803	319,926
Interest Expense, FHLB and FRB borrowings	329	19,821	19,612	50,141
Interest on other borrowings and debt	2,753	2,740	8,228	9,642
Total interest expense	130,275	140,415	401,643	379,709
NET INTEREST INCOME BEFORE PROVISION FOR CREDIT LOSSES	104,809	135,378	325,716	399,945
Provision for Loan, Lease, and Other Losses	3,280	16,862	7,280	29,192
NET INTEREST INCOME AFTER PROVISION FOR CREDIT LOSSES	101,529	118,516	318,436	370,753
NONINTEREST INCOME:
Service fees on deposit accounts	2,651	2,415	7,919	6,961
International service fees	711	740	2,441	2,682
Wire transfer and foreign currency fees	926	806	2,712	2,429
Swap fees	21	(61)	189	655
Net gains on sales of SBA loans	2,722	0	4,702	4,097
Net (losses) gains on sales of investment securities AFS	(326)	0	99	0
Other income and fees	5,134	4,405	13,134	19,473
Total noninterest income	11,839	8,305	31,196	36,297
NONINTEREST EXPENSE:
Salaries and employee benefits	44,160	51,033	135,844	160,507
Occupancy	6,940	7,149	20,632	21,637
Furniture and equipment	5,341	5,625	16,156	16,076
Data processing and communications	3,112	2,891	9,099	8,630
Professional fees	1,969	2,111	6,679	5,070
Amortization of investments in affordable housing partnerships	2,206	1,933	6,623	5,561
FDIC assessments	2,200	3,683	8,129	10,155
FDIC special assessment	0	0	691	0
Earned interest credit expense	6,869	6,377	18,842	15,894
Restructuring-related costs	197	500	1,175	500
Merger-related costs	1,236	0	3,869	0
Other noninterest expense	7,038	5,509	19,355	18,738
Total noninterest expense	81,268	86,811	247,094	262,768
INCOME BEFORE INCOME TAXES	32,100	40,010	102,538	144,282
INCOME TAX PROVISION	7,941	9,961	27,245	37,090
NET INCOME	$ 24,159	$ 30,049	$ 75,293	$ 107,192
EARNINGS PER COMMON SHARE
Basic (in dollars per share)	$ 0.20	$ 0.25	$ 0.62	$ 0.89
Diluted (in dollars per share)	$ 0.20	$ 0.25	$ 0.62	$ 0.89

Consolidated Statements Of Comp

Consolidated Statements Of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 24,159	$ 30,049	$ 75,293	$ 107,192
Other comprehensive income (loss):
Change in unrealized net holding gains (losses) on securities AFS	69,000	(68,261)	45,885	(68,117)
Change in unrealized net holding gains (losses) on interest rate contracts used in cash flow hedges	3,178	(4,310)	(7,758)	3,405
Reclassification adjustments for net gains realized in net income	(847)	(3,720)	(7,019)	(8,780)
Tax effect	(20,980)	22,490	(9,149)	21,664
Other comprehensive income (loss), net of tax	50,351	(53,801)	21,959	(51,828)
Total comprehensive income (loss)	$ 74,510	$ (23,752)	$ 97,252	$ 55,364

Consolidated Statements Of Chan

Consolidated Statements Of Changes In Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common stock	Additional paid-in capital	Retained earnings	Treasury stock	Accumulated other comprehensive loss, net
Balance at beginning of period (in shares) at Dec. 31, 2022		119,495,209
Balance at beginning of period at Dec. 31, 2022	$ 2,019,328	$ 137	$ 1,431,003	$ 1,083,712	$ (264,667)	$ (230,857)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Adoption of ASU 2022-02 | ASU 2022-02	407			407
Adoption of ASU 2022-02 | ASU 2022-02, tax impact	(120)			(120)
Issuance of shares pursuant to various stock plans, net of forfeitures and tax withholding cancellations (in shares)		531,011
Issuance of shares pursuant to various stock plans, net of forfeitures and tax withholding cancellations	0
Stock-based compensation, net of tax settlements	5,766		5,766
Cash dividends declared on common stock	(50,321)			(50,321)
Comprehensive loss:
Net income	107,192			107,192
Other comprehensive income (loss)	(51,828)					(51,828)
Balance at end of period (in shares) at Sep. 30, 2023		120,026,220
Balance at end of period at Sep. 30, 2023	2,030,424	$ 137	1,436,769	1,140,870	(264,667)	(282,685)
Balance at beginning of period (in shares) at Jun. 30, 2023		120,014,888
Balance at beginning of period at Jun. 30, 2023	2,067,998	$ 137	1,433,788	1,127,624	(264,667)	(228,884)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of shares pursuant to various stock plans, net of forfeitures and tax withholding cancellations (in shares)		11,332
Issuance of shares pursuant to various stock plans, net of forfeitures and tax withholding cancellations	0
Stock-based compensation, net of tax settlements	2,981		2,981
Cash dividends declared on common stock	(16,803)			(16,803)
Comprehensive loss:
Net income	30,049			30,049
Other comprehensive income (loss)	(53,801)					(53,801)
Balance at end of period (in shares) at Sep. 30, 2023		120,026,220
Balance at end of period at Sep. 30, 2023	2,030,424	$ 137	1,436,769	1,140,870	(264,667)	(282,685)
Balance at beginning of period (in shares) at Dec. 31, 2023		120,126,786
Balance at beginning of period at Dec. 31, 2023	2,121,243	$ 138	1,439,963	1,150,547	(264,667)	(204,738)
Balance at beginning of period (ASU 2023-02) at Dec. 31, 2023	(1,605)			(1,605)
Balance at beginning of period (ASU 2023-02, tax impact) at Dec. 31, 2023	472			472
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of shares pursuant to various stock plans, net of forfeitures and tax withholding cancellations (in shares)		611,122
Issuance of shares pursuant to various stock plans, net of forfeitures and tax withholding cancellations	0
Stock-based compensation, net of tax settlements	3,030		3,030
Cash dividends declared on common stock	(50,607)			(50,607)
Comprehensive loss:
Net income	75,293			75,293
Other comprehensive income (loss)	21,959					21,959
Balance at end of period (in shares) at Sep. 30, 2024		120,737,908
Balance at end of period at Sep. 30, 2024	2,169,785	$ 138	1,442,993	1,174,100	(264,667)	(182,779)
Balance at beginning of period (in shares) at Jun. 30, 2024		120,731,342
Balance at beginning of period at Jun. 30, 2024	2,111,282	$ 138	1,440,963	1,167,978	(264,667)	(233,130)
Balance at beginning of period (ASU 2023-02) at Jun. 30, 2024	(1,605)			(1,605)
Balance at beginning of period (ASU 2023-02, tax impact) at Jun. 30, 2024	472			472
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of shares pursuant to various stock plans, net of forfeitures and tax withholding cancellations (in shares)		6,566
Issuance of shares pursuant to various stock plans, net of forfeitures and tax withholding cancellations	0
Stock-based compensation, net of tax settlements	2,030		2,030
Cash dividends declared on common stock	(16,904)			(16,904)
Comprehensive loss:
Net income	24,159			24,159
Other comprehensive income (loss)	50,351					50,351
Balance at end of period (in shares) at Sep. 30, 2024		120,737,908
Balance at end of period at Sep. 30, 2024	$ 2,169,785	$ 138	$ 1,442,993	$ 1,174,100	$ (264,667)	$ (182,779)

Consolidated Statements Of Ch_2

Consolidated Statements Of Changes In Stockholders' Equity (Unaudited) (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Statement of Stockholders' Equity [Abstract]
Cash dividends declared on common stock (in dollars per share)	$ 0.14	$ 0.14	$ 0.42	$ 0.42
ASU 2022-02
Adoption of ASU				ASU 2022-02
ASU 2022-02, tax impact
Adoption of ASU				ASU 2022-02, tax impact
ASU 2023-02
Adoption of ASU	ASU 2022-02		ASU 2022-02
ASU 2023-02, tax impact
Adoption of ASU	ASU 2022-02, tax impact		ASU 2022-02, tax impact

Consolidated Statements Of Cash

Consolidated Statements Of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 75,293	$ 107,192
Adjustments to reconcile net income to net cash from operating activities:
Discount accretion, net of depreciation and amortization	28,054	15,040
Stock-based compensation expense	6,496	8,767
Provision for credit losses	7,280	29,192
Distribution gain from investment in affordable housing partnerships	(1)	(5,819)
Net gains on sales of loans	(5,059)	(4,174)
Gains on BOLI	(1,298)	(1,152)
Net change in fair value of derivatives	(9,923)	(11,606)
Valuation on HFS loans	1,552	341
Net gain on sale of investment securities AFS	(99)	0
Net change in deferred income taxes	4,001	5,692
Proceeds from sales of loans held for sale	40,050	67,763
Originations of loans held for sale	(28,197)	(53,828)
Originations of servicing assets	(1,839)	(1,885)
Net change in accrued interest receivable	9,822	(7,178)
Net change in other assets	31,111	51,454
Net change in accrued interest payable	(61,157)	140,163
Net change in other liabilities	(29,003)	55,256
Net cash provided by operating activities	67,083	395,218
CASH FLOWS FROM INVESTING ACTIVITIES
Redemption of interest earning deposits in other financial institutions	0	735
Purchase of securities	(136,499)	(372,895)
Proceeds from matured, called, or paid-down securities	246,829	280,123
Proceeds from sales and calls of securities available for sale	157,692	0
Purchase of securities	0	(5,545)
Proceeds from matured, called, or paid-down securities	10,205	12,789
Purchase of equity investments	(1,175)	(924)
Proceeds from redemptions of equity investments	305	3
Proceeds from sales of loans held for sale previously classified as held for investment	82,800	335,390
Purchase of loans receivable	0	(1,636)
Net change in loans receivable	109,345	710,267
Proceeds from sales of OREO	63	1,209
Purchase of FHLB stock	0	(4,650)
Redemption of FHLB stock	0	6,030
Purchase of premises and equipment	(7,547)	(11,123)
Purchase of BOLI policy	0	(11,000)
Proceeds from BOLI death benefits	0	587
Investments in affordable housing partnerships	(3,157)	(2,852)
Net cash provided by investing activities	458,861	936,508
CASH FLOWS FROM FINANCING ACTIVITIES
Net change in deposits	(24,255)	1,058
Proceeds from FHLB advances	400,000	5,350,000
Repayment of FHLB advances	(400,000)	(5,850,000)
Proceeds from FRB borrowings	786,100	36,104,000
Repayment of FRB borrowings	(2,481,826)	(34,673,274)
Repurchase of convertible notes	0	(19,534)
Repayment of convertible notes	0	(197,107)
Cash dividends paid on common stock	(50,607)	(50,321)
Taxes paid in net settlement of restricted stock	(3,466)	(3,001)
Net cash (used in) provided by financing activities	(1,774,054)	661,821
NET CHANGE IN CASH AND CASH EQUIVALENTS	(1,248,110)	1,993,547
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	1,928,967	506,776
CASH AND CASH EQUIVALENTS, END OF PERIOD	680,857	2,500,323
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION
Interest paid	461,820	238,264
Income taxes paid	27,630	7,170
SUPPLEMENTAL DISCLOSURES OF NON-CASH ACTIVITIES
Transfer from loans receivable to OREO	0	105
Transfer from loans receivable to loans held for sale	140,994	382,286
Transfer from loans held for sale to loans receivable	26,491	22,400
ROU assets obtained in exchange for lease liabilities, net	$ 5,490	$ 7,606

Hope Bancorp, Inc.

Hope Bancorp, Inc.	9 Months Ended
	Sep. 30, 2024
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”). At September 30, 2024, the Bank had 48 branches and nine loan production offices in California, New York, Texas, Washington, Illinois, New Jersey, Virginia, Georgia, Alabama, Colorado and Oregon, as well a representative office in Seoul, South Korea. The Company is a corporation organized under the laws of the state of Delaware and a bank holding company registered under the Bank Holding Company Act of 1956, as amended. On March 28, 2024, the Bank entered into a Purchase and Assumption Agreement with PromiseOne Bank, a Georgia state bank, to sell the deposits, other liabilities and certain physical assets of the Bank’s two branches located in Virginia (Annandale and Centreville). The transaction was completed on October 1, 2024. On April 26, 2024, the Company entered into a merger agreement with Territorial Bancorp Inc. (“Territorial”), headquartered in Honolulu, Hawaii. Under the terms of the merger agreement, assuming the transaction is consummated, Territorial will merge with and into the Company, immediately followed by the merger of Territorial’s subsidiary bank, Territorial Savings Bank, with and into the Company’s subsidiary bank, Bank of Hope. If the transaction is completed, Territorial shareholders will receive a fixed exchange ratio of 0.8048 shares of the Company’s common stock in exchange for each share of Territorial common stock they own. Based on the closing price of the Company’s common stock on April 26, 2024, this represented a value of $8.82 per share of Territorial common stock, although the actual value will be determined upon the completion of the merger. Following the completion of the pending transaction, the legacy Territorial franchise in Hawaii will continue to do business under the Territorial brand, as a trade name of Bank of Hope.

Basis of Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2024
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 at December 31, 2023, which was from the audited financial statements included in the Company’s 2023 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 the Bank. 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, 2024 and December 31, 2023, and the results of operations for the three and nine months ended September 30, 2024 and 2023. 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 2023 Annual Report on Form 10-K. Significant Accounting Policies The Company’s accounting policies are described in Note 1—“Summary of Significant Accounting Policies”, of its audited consolidated financial statements included in its 2023 Annual Report Form 10-K. Significant changes to accounting policies from those disclosed in the Company’s audited consolidated financial statements included in its 2023 Annual Report Form 10-K are presented below. The allowance for unfunded commitments is recognized as a liability (other liabilities in the Consolidated Statements of Financial Condition), with adjustments to the allowance for unfunded commitments recognized through provision for credit losses in the Consolidated Statements of Income. Adopted Accounting Policies In 2024, the Company adopted ASU 2023-02 - “Investments-Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method”. During the third quarter of 2024, the Company made an adjustment related to the adoption of ASU 2023-02 and recorded $15.1 million in the derecognition of delayed contribution liabilities related to the Company’s investments in affordable housing partnerships, as balance sheet adjustments. In addition, the Company recorded adjustments to equity including a $1.1 million adjustment to retained earnings net of a $472 thousand reduction to account for deferred tax assets. Recently Issued Accounting Pronouncements Not Yet Adopted

Earnings Per Share ("EPS")

Earnings Per Share ("EPS")	9 Months Ended
	Sep. 30, 2024
Earnings Per Share [Abstract]
Earnings Per Share ("EPS")	Earnings Per Share (“EPS”) Earnings per share are computed by dividing net income by the weighted average number of common shares outstanding for the period. 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. 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, 2024 and 2023, stock options and restricted share awards of 430,728 and 1,049,495 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, 2024 and 2023, stock options and restricted share awards of 611,573 and 1,189,286 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, of which $444 thousand remained outstanding at September 30, 2024. 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 Note 10—“Convertible Notes and Subordinated Debentures” for additional information regarding convertible notes issued). Under the required if-converted method for calculating dilutive EPS for convertible instruments, 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, 2024 and 2023, 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, 2024 and 2023, as the conversion price exceeded the market price of the Company’s stock. The following tables present computations of basic and diluted EPS for the three and nine months ended September 30, 2024 and 2023. Three Months Ended September 30, 2024 2023 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 $ 24,159 120,734,581 $ 0.20 $ 30,049 120,020,567 $ 0.25 Effect of dilutive securities: Stock options and restricted stock 425,396 354,051 Diluted EPS - common stock $ 24,159 121,159,977 $ 0.20 $ 30,049 120,374,618 $ 0.25 Nine Months Ended September 30, 2024 2023 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 $ 75,293 120,529,535 $ 0.62 $ 107,192 119,843,382 $ 0.89 Effect of dilutive securities: Stock options and restricted stock 498,258 406,570 Diluted EPS - common stock $ 75,293 121,027,793 $ 0.62 $ 107,192 120,249,952 $ 0.89

Equity Investments

Equity Investments	9 Months Ended
	Sep. 30, 2024
Investments, Debt and Equity Securities [Abstract]
Equity Investments	Equity Investments Equity investments with readily determinable fair values at September 30, 2024 and December 31, 2023, consisted of mutual funds in the amounts of $4.5 million and $4.4 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, 2024 and 2023, were recorded in other noninterest income and fees as summarized in the table below: Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 (Dollars in thousands) Net change in fair value recorded during the period on equity investments with readily determinable fair value $ 157 $ (134) $ 92 $ (134) Less: Net change in fair value recorded on equity investments sold during the period — — — — Net change in fair value on equity investments with readily determinable fair values held at the end of the period $ 157 $ (134) $ 92 $ (134) At September 30, 2024 and December 31, 2023, 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, 2024, the total balance of equity investments without readily determinable fair values included in “Equity investments” on the Consolidated Statements of Financial Condition was $35.5 million, consisting of $370 thousand in correspondent bank stock, $1.0 million in Community Development Financial Institutions (“CDFI”) investments, and $34.1 million in Community Reinvestment Act (“CRA”) investments. At December 31, 2023, the total balance of equity investments without readily determinable fair values was $39.4 million, consisting of $370 thousand in correspondent bank stock, $1.0 million in CDFI investments, and $38.0 million in CRA investments.

Securities Available for Sale

Securities Available for Sale	9 Months Ended
	Sep. 30, 2024
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, 2024 December 31, 2023 Amortized Gross Gross Fair Amortized Gross Gross Fair (Dollars in thousands) Debt securities AFS: U.S. Treasury securities $ — $ — $ — $ — $ 103,691 $ 21 $ (35) $ 103,677 U.S. Government agency and U.S. Government sponsored enterprises: Agency securities 4,000 — (28) 3,972 4,000 — (100) 3,900 Collateralized mortgage obligations (“CMO”) 818,736 699 (119,583) 699,852 888,631 367 (141,279) 747,719 Mortgage-backed securities (“MBS”): Residential 483,454 — (67,329) 416,125 499,431 — (79,133) 420,298 Commercial 489,374 1,524 (44,415) 446,483 445,207 113 (53,432) 391,888 Asset-backed securities 134,324 281 (66) 134,539 150,992 — (1,322) 149,670 Corporate securities 23,266 — (2,733) 20,533 23,302 — (3,868) 19,434 Municipal securities 206,790 2,697 (10,010) 199,477 314,554 5,698 (11,779) 308,473 Total investment securities AFS $ 2,159,944 $ 5,201 $ (244,164) $ 1,920,981 $ 2,429,808 $ 6,199 $ (290,948) $ 2,145,059 Debt securities HTM: U.S. Government agency and U.S. Government sponsored enterprises: MBS: Residential $ 144,493 $ — $ (4,804) $ 139,689 $ 150,369 $ — $ (6,663) $ 143,706 Commercial 111,827 18 (5,303) 106,542 113,543 — (6,731) 106,812 Total investment securities HTM $ 256,320 $ 18 $ (10,107) $ 246,231 $ 263,912 $ — $ (13,394) $ 250,518 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, 2024 and December 31, 2023, totaled $7.5 million and $11.0 million, respectively. At September 30, 2024 and December 31, 2023, 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. The table below summarizes the proceeds from and gains and losses on the sales and calls of investment securities AFS, for the periods presented below. Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 (Dollars in thousands) Proceeds from sales and calls of investment securities AFS $ 65,105 $ — $ 157,692 $ — Gains from sales of investment securities AFS $ 543 $ — $ 2,069 $ — Losses from sales of investment securities AFS (869) — (1,970) — Net (losses) gain on sales and calls of investment securities AFS $ (326) $ — $ 99 $ — At September 30, 2024 and December 31, 2023, $167.9 million and $200.2 million in unrealized losses on investment securities AFS, net of taxes, respectively, were included in accumulated other comprehensive loss. 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, 2024 2023 2024 2023 (Dollars in thousands) Interest income on investment securities Taxable $ 15,948 $ 15,884 $ 48,896 $ 44,396 Nontaxable 793 1,122 2,723 3,269 Total $ 16,741 $ 17,006 $ 51,619 $ 47,665 The amortized cost and estimated fair value of investment securities at September 30, 2024, 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 $ — $ — $ — $ — Due after one year through five years 143,758 138,873 24,930 24,803 Due after five years through ten years 140,052 134,267 8,770 8,650 Due after ten years 1,876,134 1,647,841 222,620 212,778 Total $ 2,159,944 $ 1,920,981 $ 256,320 $ 246,231 Securities with carrying values of approximately $223.7 million and $1.70 billion at September 30, 2024 and December 31, 2023, respectively, were pledged to secure public deposits, for various borrowings, and for other purposes as required or permitted by law. The decrease was primarily due to securities were no longer being pledged at the Bank Term Funding Program (“BTFP”) as of September 30, 2024, as the BTFP ceased extending new advances in March 2024. 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, 2024 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 — $ — $ — — $ — $ — — $ — $ — U.S. Government agency and U.S. Government sponsored enterprises: Agency securities — — — 1 3,972 (28) 1 3,972 (28) CMOs — — — 95 672,967 (119,583) 95 672,967 (119,583) MBS: Residential 1 17,688 (168) 64 398,437 (67,161) 65 416,125 (67,329) Commercial 5 33,500 (945) 56 344,770 (43,470) 61 378,270 (44,415) Asset-backed securities 5 39,008 (66) — — — 5 39,008 (66) Corporate securities — — — 6 20,533 (2,733) 6 20,533 (2,733) Municipal securities 5 19,347 (510) 39 88,451 (9,500) 44 107,798 (10,010) Total 16 $ 109,543 $ (1,689) 261 $ 1,529,130 $ (242,475) 277 $ 1,638,673 $ (244,164) December 31, 2023 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 $ 3,963 $ (35) 1 $ 3,963 $ (35) U.S. Government agency and U.S. Government sponsored enterprises: Agency securities — — — 1 3,900 (100) 1 3,900 (100) CMOs 3 19,800 (378) 115 717,662 (140,901) 118 737,462 (141,279) MBS: Residential — — — 65 420,298 (79,133) 65 420,298 (79,133) Commercial 6 53,255 (2,129) 53 331,450 (51,303) 59 384,705 (53,432) Asset-backed securities — — — 18 149,670 (1,322) 18 149,670 (1,322) Corporate securities — — — 6 19,434 (3,868) 6 19,434 (3,868) Municipal securities 11 42,760 (263) 42 91,707 (11,516) 53 134,467 (11,779) Total 20 $ 115,815 $ (2,770) 301 $ 1,738,084 $ (288,178) 321 $ 1,853,899 $ (290,948) The Company had agency securities, collateralized mortgage obligations, mortgage-backed, corporate, and municipal securities classified as AFS that were in a continuous loss position for twelve months or longer at September 30, 2024. The agency securities, 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 asset-backed, corporate, and municipal securities that were in an unrealized loss position has 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 has been less than amortized cost is not considered when assessing for credit impairment. 83.7% of the Company’s investment portfolio at September 30, 2024, consisted of securities that were issued by U.S. Government agency and U.S. Government sponsored enterprises. Although a government guarantee exists on securities issued by U.S. Government sponsored agencies, 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 Housing and Economic Recovery Act of 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. Therefore, the Company concluded that a zero allowance approach for these investments was appropriate. The Company also had five asset-backed securities, six corporate securities, and 44 municipal bonds in unrealized loss positions at September 30, 2024. 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, 2024. 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 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 quantitative filter for impairment triggers. Once the quantitative filter has been triggered, a security is 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 are recognized in other comprehensive income, net of applicable taxes. The Company did not have an allowance for credit losses on investment securities AFS at September 30, 2024 and December 31, 2023. Allowance for Credit Losses on Securities Held to Maturity—

Loans Receivable and Allowance

Loans Receivable and Allowance for Credit Losses	9 Months Ended
	Sep. 30, 2024
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 segment: September 30, 2024 December 31, 2023 (Dollars in thousands) Loan portfolio composition Commercial real estate (“CRE”) loans $ 8,630,757 $ 8,797,884 Commercial and industrial (“C&I”) loans 3,901,368 4,135,044 Residential mortgage loans 1,047,556 883,687 Consumer and other loans 38,307 37,004 Total loans receivable, net of deferred costs and fees 13,617,988 13,853,619 Allowance for credit losses (153,270) (158,694) Loans receivable, net of allowance for credit losses $ 13,464,718 $ 13,694,925 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 $1.3 million and $6.1 million at September 30, 2024 and December 31, 2023, respectively. The loan portfolio consists of four segments: CRE loans, C&I loans, residential mortgage loans, and consumer and other loans. CRE loans are extended for the purchase and refinance of commercial real estate and are generally secured by first deeds of trust and collateralized by multifamily residential or commercial properties. C&I loans are loans provided to businesses for various purposes such as working capital, purchasing inventory, debt refinancing, business acquisitions, international trade finance activities, and other business-related financing needs. CRE and C&I loans also include Small Business Administration (“SBA”) loans. Residential mortgage loans are extended for personal, family, or household use and are secured by a first mortgage or deed of trust. Consumer and other loans consist of home equity, credit card, and other personal loans. The Company had loans receivable of $13.62 billion at September 30, 2024, a decrease of $235.6 million, or 1.7%, from December 31, 2023. The decrease in loans receivable during the nine months ended September 30, 2024, was due to the decline in C&I and CRE loans, partially offset by the growth in residential mortgage loans. During the nine months ended September 30, 2024, loan payoffs, paydowns and sales exceeded new origination volume, reflecting, in part, an elevated pace of payoffs in a high interest rate environment. The Company had $25.7 million in loans held for sale at September 30, 2024, compared with $3.4 million at December 31, 2023. Loans held for sale at September 30, 2024, consisted of $2.0 million in residential mortgage loans and $23.7 million in C&I loans, net of valuation allowance of $1.6 million. Loans held for sale are not included in the loans receivable table presented above. 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, 2024 and 2023. CRE Loans C&I Loans Residential Mortgage Loans Consumer and Other Loans Total (Dollars in thousands) Three Months Ended September 30, 2024 Balance, beginning of period $ 95,643 $ 56,014 $ 3,909 $ 453 $ 156,019 Provision (credit) for credit loss on loans (3,943) 6,314 515 114 3,000 Loans charged off (390) (5,767) — (126) (6,283) Recoveries of charge offs 18 480 — 36 534 Balance, end of period $ 91,328 $ 57,041 $ 4,424 $ 477 $ 153,270 Nine Months Ended September 30, 2024 Balance, beginning of period $ 93,940 $ 51,291 $ 12,838 $ 625 $ 158,694 Provision (credit) for credit loss on loans (2,223) 19,009 (8,414) (72) 8,300 Loans charged off (948) (16,358) — (235) (17,541) Recoveries of charge offs 559 3,099 — 159 3,817 Balance, end of period $ 91,328 $ 57,041 $ 4,424 $ 477 $ 153,270 CRE Loans C&I Loans Residential Mortgage Loans Consumer and Other Loans Total (Dollars in thousands) Three Months Ended September 30, 2023 Balance, beginning of period $ 105,321 $ 54,894 $ 11,983 $ 798 $ 172,996 Provision (credit) for credit loss on loans (10,852) 27,713 13 (74) 16,800 Loans charged off (631) (33,219) — (75) (33,925) Recoveries of charge offs 2,898 34 — 6 2,938 Balance, end of period $ 96,736 $ 49,422 $ 11,996 $ 655 $ 158,809 Nine Months Ended September 30, 2023 Balance, beginning of period $ 95,884 $ 56,872 $ 8,920 $ 683 $ 162,359 ASU 2022-02 day 1 adoption adjustment 19 (426) — — $ (407) Provision (credit) for credit loss on loans (1,065) 25,226 3,076 163 27,400 Loans charged off (1,192) (33,957) — (250) (35,399) Recoveries of charge offs 3,090 1,707 — 59 4,856 Balance, end of period $ 96,736 $ 49,422 $ 11,996 $ 655 $ 158,809 The following tables break out the allowance for credit losses and loan balance by measurement methodology at September 30, 2024 and December 31, 2023: September 30, 2024 CRE Loans C&I Loans Residential Mortgage Loans Consumer and Other Loans Total (Dollars in thousands) Allowance for credit losses: Individually evaluated $ 3,238 $ 4,685 $ 163 $ 17 $ 8,103 Collectively evaluated 88,090 52,356 4,261 460 145,167 Total $ 91,328 $ 57,041 $ 4,424 $ 477 $ 153,270 Loans outstanding: Individually evaluated $ 72,125 $ 24,963 $ 6,363 $ 42 $ 103,493 Collectively evaluated 8,558,632 3,876,405 1,041,193 38,265 13,514,495 Total $ 8,630,757 $ 3,901,368 $ 1,047,556 $ 38,307 $ 13,617,988 December 31, 2023 CRE Loans C&I Loans Residential Mortgage Loans Consumer and Other Loans Total (Dollars in thousands) Allowance for credit losses: Individually evaluated $ 886 $ 1,721 $ 39 $ 14 $ 2,660 Collectively evaluated 93,054 49,570 12,799 611 156,034 Total $ 93,940 $ 51,291 $ 12,838 $ 625 $ 158,694 Loans outstanding: Individually evaluated $ 33,932 $ 5,013 $ 5,916 $ 343 $ 45,204 Collectively evaluated 8,763,952 4,130,031 877,771 36,661 13,808,415 Total $ 8,797,884 $ 4,135,044 $ 883,687 $ 37,004 $ 13,853,619 At September 30, 2024 and December 31, 2023, reserves for unfunded loan commitments recorded in other liabilities were $2.8 million and $3.8 million, respectively. For the three and nine months ended September 30, 2024, the Company recorded an addition to reserves for unfunded commitments of $280 thousand and a reduction to reserves for unfunded commitments of $1.0 million, respectively. For the three and nine months ended September 30, 2023, the Company recorded additions to reserves for unfunded commitments totaling $62 thousand and $1.8 million, 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, as well as loans past due 90 or more days and still on accrual status, by loan segment and broken out by loans with a recorded ACL and those without a recorded ACL, at September 30, 2024 and December 31, 2023. September 30, 2024 Nonaccrual with No ACL Nonaccrual with an ACL Total Nonaccrual (1) Accruing Loans Past Due 90 Days or More (Dollars in thousands) CRE loans $ 19,788 $ 52,440 $ 72,228 $ — C&I loans 3,811 21,152 24,963 128 Residential mortgage loans 2,969 3,394 6,363 — Consumer and other loans — 48 48 98 Total $ 26,568 $ 77,034 $ 103,602 $ 226 December 31, 2023 Nonaccrual with No ACL Nonaccrual with an ACL Total Nonaccrual (1) Accruing Loans Past Due 90 Days or More (Dollars in thousands) CRE loans $ 26,724 $ 7,208 $ 33,932 $ — C&I loans 2,447 2,566 5,013 184 Residential mortgage loans 3,002 2,914 5,916 — Consumer and other loans — 343 343 77 Total $ 32,173 $ 13,031 $ 45,204 $ 261 __________________________________ (1) Total nonaccrual loans exclude the guaranteed portion of SBA loans that are in liquidation totaling $13.1 million and $11.4 million, at September 30, 2024 and December 31, 2023, respectively. The following table presents the amortized cost of collateral-dependent loans at September 30, 2024 and December 31, 2023: September 30, 2024 December 31, 2023 Real Estate Collateral Other Collateral Total Real Estate Collateral Other Collateral Total (Dollars in thousands) CRE loans $ 51,505 $ — $ 51,505 $ 29,803 $ — $ 29,803 C&I loans 1,383 22,432 23,815 2,447 1,708 4,155 Residential mortgage loans 2,969 — 2,969 3,002 — 3,002 Total $ 55,857 $ 22,432 $ 78,289 $ 35,252 $ 1,708 $ 36,960 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, 2024, the Company did not have any significant changes to the extent to which collateral secured its collateral-dependent loans, due to general deterioration or from other factors. Real estate collateral securing CRE and C&I loans consisted of commercial real estate properties including hotel/motel, building, office, gas station/carwash, residential mortgage, restaurant and land properties. Loans secured by other collateral are secured by assets of the underlying businesses of the borrowers or borrowers net worth. Accrued interest receivable on loans totaled $43.1 million at September 30, 2024, and $49.3 million at December 31, 2023. The Company has elected to exclude 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 receivable 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, 2024 and 2023: Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 (Dollars in thousands) CRE loans $ 1,867 $ 176 $ 2,119 $ 841 C&I loans 263 216 1,976 1,102 Residential mortgage loans 2 — 10 32 Total $ 2,132 $ 392 $ 4,105 $ 1,975 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 at September 30, 2024 and December 31, 2023, by loan segment: September 30, 2024 December 31, 2023 30-59 Days 60-89 Days 90 Days or More Total 30-59 Days 60-89 Days 90 Days or More Total (Dollars in thousands) CRE loans $ 715 $ 60,707 $ 6,403 $ 67,825 $ 1,999 $ 2,976 $ 10,197 $ 15,172 C&I loans 9,037 3,898 8,537 21,472 934 533 1,717 3,184 Residential mortgage loans 899 1,805 2,995 5,699 1,534 — 2,339 3,873 Consumer and other loans 132 92 106 330 214 48 77 339 Total Past Due $ 10,783 $ 66,502 $ 18,041 $ 95,326 $ 4,681 $ 3,557 $ 14,330 $ 22,568 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 segment, risk rating, and year of origination, renewal, or major modification at September 30, 2024 and December 31, 2023. September 30, 2024 Term Loan by Year Revolving Loans Total 2024 2023 2022 2021 2020 Prior (Dollars in thousands) CRE loans Pass $ 591,743 $ 580,884 $ 2,352,878 $ 1,925,051 $ 1,148,074 $ 1,752,263 $ 110,552 $ 8,461,445 Special mention — 14,998 2,651 5,105 — 13,677 799 37,230 Substandard — 970 2,417 49,587 34,863 44,245 — 132,082 Subtotal $ 591,743 $ 596,852 $ 2,357,946 $ 1,979,743 $ 1,182,937 $ 1,810,185 $ 111,351 $ 8,630,757 Year-to-date gross charge offs $ — $ — $ 165 $ — $ 101 $ 682 $ — $ 948 C&I loans Pass $ 1,040,295 $ 619,685 $ 854,235 $ 362,372 $ 114,366 $ 52,954 $ 527,712 $ 3,571,619 Special mention — 32,972 18,914 35,072 — 14,974 45,281 147,213 Substandard 3,510 15,707 79,919 18,975 113 985 56,924 176,133 Doubtful / loss 6,403 — — — — — — 6,403 Subtotal $ 1,050,208 $ 668,364 $ 953,068 $ 416,419 $ 114,479 $ 68,913 $ 629,917 $ 3,901,368 Year-to-date gross charge offs $ — $ 319 $ 15,833 $ 107 $ — $ 99 $ — $ 16,358 Residential mortgage loans Pass $ 222,238 $ 85,858 $ 351,541 $ 244,871 $ 1,328 $ 135,103 $ — $ 1,040,939 Special mention — — — — — — — — Substandard — — — 972 1,836 3,809 — 6,617 Subtotal $ 222,238 $ 85,858 $ 351,541 $ 245,843 $ 3,164 $ 138,912 $ — $ 1,047,556 Year-to-date gross charge offs $ — $ — $ — $ — $ — $ — $ — $ — Consumer and other loans Pass $ 6,480 $ 676 $ 212 $ 192 $ 1,157 $ 8,458 $ 21,084 $ 38,259 Special mention — — — — — — — — Substandard — — — — — 48 — 48 Subtotal $ 6,480 $ 676 $ 212 $ 192 $ 1,157 $ 8,506 $ 21,084 $ 38,307 Year-to-date gross charge offs $ — $ — $ — $ — $ — $ — $ 235 $ 235 Total loans Pass $ 1,860,756 $ 1,287,103 $ 3,558,866 $ 2,532,486 $ 1,264,925 $ 1,948,778 $ 659,348 $ 13,112,262 Special mention — 47,970 21,565 40,177 — 28,651 46,080 184,443 Substandard 3,510 16,677 82,336 69,534 36,812 49,087 56,924 314,880 Doubtful / loss 6,403 — — — — — — 6,403 Total $ 1,870,669 $ 1,351,750 $ 3,662,767 $ 2,642,197 $ 1,301,737 $ 2,026,516 $ 762,352 $ 13,617,988 Total year-to-date gross charge offs $ — $ 319 $ 15,998 $ 107 $ 101 $ 781 $ 235 $ 17,541 December 31, 2023 Term Loan by Year Revolving Loans Total 2023 2022 2021 2020 2019 Prior (Dollars in thousands) CRE loans Pass $ 623,058 $ 2,429,146 $ 2,045,863 $ 1,239,654 $ 996,483 $ 1,297,295 $ 79,426 $ 8,710,925 Special mention — 2,001 15,452 2,518 5,963 5,196 — 31,130 Substandard — 1,549 7,300 2,711 2,083 42,186 — 55,829 Subtotal $ 623,058 $ 2,432,696 $ 2,068,615 $ 1,244,883 $ 1,004,529 $ 1,344,677 $ 79,426 $ 8,797,884 Year-to-date gross charge offs $ 103 $ 315 $ — $ 233 $ 355 $ 1,941 $ — $ 2,947 C&I loans Pass $ 1,107,219 $ 1,208,795 $ 683,821 $ 203,142 $ 162,815 $ 61,019 $ 479,266 $ 3,906,077 Special mention 9,743 23,413 31,388 8,597 14,614 — 60,107 147,862 Substandard 7,158 53,213 8,480 8,637 290 2,358 969 81,105 Subtotal $ 1,124,120 $ 1,285,421 $ 723,689 $ 220,376 $ 177,719 $ 63,377 $ 540,342 $ 4,135,044 Year-to-date gross charge offs $ 5,011 $ 12,323 $ 16,020 $ 128 $ 182 $ 539 $ — $ 34,203 Residential mortgage loans Pass $ 93,982 $ 365,252 $ 263,977 $ 1,356 $ 29,063 $ 123,885 $ — $ 877,515 Special mention — — — — — — — — Substandard — — 314 1,836 957 3,065 — 6,172 Subtotal $ 93,982 $ 365,252 $ 264,291 $ 3,192 $ 30,020 $ 126,950 $ — $ 883,687 Year-to-date gross charge offs $ — $ — $ — $ — $ — $ — $ — $ — Consumer and other loans Pass $ 3,985 $ 944 $ 278 $ 2,068 $ 371 $ 8,221 $ 20,794 $ 36,661 Special mention — — — — — — — — Substandard — — — — — 343 — 343 Subtotal $ 3,985 $ 944 $ 278 $ 2,068 $ 371 $ 8,564 $ 20,794 $ 37,004 Year-to-date gross charge offs $ — $ — $ — $ — $ — $ — $ 370 $ 370 Total loans Pass $ 1,828,244 $ 4,004,137 $ 2,993,939 $ 1,446,220 $ 1,188,732 $ 1,490,420 $ 579,486 $ 13,531,178 Special mention 9,743 25,414 46,840 11,115 20,577 5,196 60,107 178,992 Substandard 7,158 54,762 16,094 13,184 3,330 47,952 969 143,449 Total $ 1,845,145 $ 4,084,313 $ 3,056,873 $ 1,470,519 $ 1,212,639 $ 1,543,568 $ 640,562 $ 13,853,619 Total year-to-date gross charge offs $ 5,114 $ 12,638 $ 16,020 $ 361 $ 537 $ 2,480 $ 370 $ 37,520 For the three and nine months ended September 30, 2024 and the twelve months ended December 31, 2023, 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 segment that were reclassified from held for investment to held for sale for the three and nine months ended September 30, 2024 and 2023, is presented in the following table: Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 Transfer of loans held for investment to held for sale (Dollars in thousands) CRE loans $ 17,110 $ 30,302 $ 70,861 $ 97,078 C&I loans 13,690 114,725 70,133 285,208 Total $ 30,800 $ 145,027 $ 140,994 $ 382,286 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 CRE loans Property type, location, owner-occupied status C&I loans Delinquency status, risk rating, industry type Residential mortgage loans FICO score, LTV, delinquency status, maturity date, collateral value, location Consumer and other loans 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 the calculation of the allowance for credit losses for collectively assessed loans. The Company uses a reasonable and supportable period of two years, at which point loss assumptions revert back to historical loss information by means of a one-year reversion period. Included in the quantitative portion of the ACL analysis are inputs such as borrowers’ net operating income, debt coverage ratios, real estate collateral values, as well as factors that are more subjective or require management’s judgment, including key macroeconomic variables from Moody’s forecast scenarios such as GDP, unemployment rates, interest rates, and CRE 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 that utilizes 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 the aggregate, non-modeled loans represented less than 2% of the Company’s total loan portfolio at September 30, 2024. 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. At September 30, 2024, the Company utilized the September 2024 consensus economic forecast scenario from Moody’s, as it best aligned with management’s expectations of future conditions. The forecast projected GDP growth of 2.6% in 2024, 1.8% for 2025, and 1.9% for 2026, with unemployment projected to be 4.1% for 2024, 4.2% for 2025, and 4.1% in 2026. CRE prices in the consensus scenario were expected to decrease initially, with the CRE price index declining -3.4% for 2024, before rebounding +6.8% for 2025 and +7.4% in 2026. The Company also utilized Moody’s December 2023 consensus economic forecast for the calculation of the December 31, 2023 ACL. In order to 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 Interagency Policy Statement on the Allowance for Credit 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, and other loan modifications; • Changes in the quality of the loan review system and the degree of oversight by the management and the Board of 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 that do not share similar risk characteristics such as nonaccrual loans above $1.0 million, the Company evaluates these loans on an individual basis in accordance with ASC 326. Such nonaccrual loans are considered to have different risk profiles than performing loans and are therefore evaluated individually. The Company elected to collectively assess 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 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 loss on loans. 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 look-back period of eight quarters. Credit loss is not estimated for off-balance-sheet credit exposures that are unconditionally cancellable by the Company. Loan Modifications to Borrowers Experiencing Financial Difficulty In January 2023, the Company adopted ASU 2022-02, Financial Instruments - Credit Losses (Topic 326): TDR and Vintage Disclosures (“ASU 2022-02”), which eliminated the accounting guidance for TDR while enhancing disclosure requirements for certain loan refinancing and restructurings by creditors when a borrower is experiencing financial difficulty. The Company applied this guidance on a modified retrospective transition method, which resulted in a positive cumulative effect adjustment to retained earnings of $287 thousand, net of tax. Subsequent to the adoption of ASU 2022-02, the new guidance is applied uniformly to the Company’s entire loan portfolio when estimating expected credit losses. A summary of loans modified to borrowers experiencing financial difficulty for the period presented, disaggregated by loan class and type of modification, is shown in the tables below. Three Months Ended September 30, 2024 CRE Loans C&I Loans Residential Mortgage Loans Consumer and Other Loans Total (Dollars in thousands) Principal forgiveness $ — $ — $ — $ — $ — Interest rate reduction — — — — — Payment delay — — — — — Term extension 13 26,732 — — 26,745 Total Loan Modifications $ 13 $ 26,732 $ — $ — $ 26,745 % of Loan Class — % 0.69 % — % — % 0.20 % Nine Months Ended September 30, 2024 CRE Loans C&I Loans Residential Mortgage Loans Consumer and Other Loans Total (Dollars in thousands) Principal forgiveness $ — $ 9,701 $ — $ — $ 9,701 Interest rate reduction — — — — — Payment delay — — — — — Term extension 13 33,581 — — 33,594 Total Loan Modifications $ 13 $ 43,282 $ — $ — $ 43,295 % of Loan Class — % 1.11 % — % — % 0.32 % Three Months Ended September 30, 2023 CRE Loans C&I Loans Residential Mortgage Loans Consumer and Other Loans Total (Dollars in thousands) Principal forgiveness $ — $ — $ — $ — $ — Interest rate reduction — — — — — Payment delay — — — — — Term extension 1,119 2,299 — — 3,418 Total Loan Modifications $ 1,119 $ 2,299 $ — $ — $ 3,418 % of Loan Class 0.01 % 0.05 % — % — % 0.02 % Nine Months Ended September 30, 2023 CRE Loans C&I Loans Residential Mortgage Loans Consumer and Other Loans Total (Dollars in thousands) Principal forgiveness $ — $ — $ — $ — $ — Interest rate reduction — — — — — Payment delay — — — — — Term extension 1,119 25,449 — — 26,568 Total Loan Modifications $ 1,119 $ 25,449 $ — $ — $ 26,568 % of Loan Class 0.01 % 0.57 % — % — % 0.19 % The following tables describe the financial effect of the loan modifications made to borrowers experiencing financial difficulty for the periods presented: Financial Effect Modification & Loan Types Description of Financial Effect Three Months Ended September 30, 2024 Nine Months Ended September 30, 2024 Principal forgiveness C&I loans Forgiveness of principal totaling: $— million $4.4 million Term extension CRE loans Extended term by a weighted average of: 0.3 years 0.3 years C&I loans Extended term by a weighted average of: 0.3 years 0.3 years Financial Effect Modification & Loan Types Description of Financial Effect Three Months Ended September 30, 2023 Nine Months Ended September 30, 2023 Term extension CRE loans Extended term by a weighted average of: 0.3 years 0.3 years C&I loans Extended term by a weighted average of: 0.3 years 0.3 years The Company closely monitors the performance of the loans that are modified to borrowers experiencing financial difficulty to understand the effectiveness of its modification efforts. All loans that have been modified within the previous 12 months to borrowers experiencing financial difficulty were current at September 30, 2024 and 2023. There were no loan modifications to borrowers experiencing financial difficulty that had payment defaults during the three and nine months ended September 30, 2024 and 2023, and that were modified in the 12 months prior to default.

Leases

Leases	9 Months Ended
	Sep. 30, 2024
Leases [Abstract]
Leases	Leases The Company’s operating leases are real estate leases of bank branch locations, loan production offices, and office spaces with remaining lease terms ranging from 1 to 9 years at September 30, 2024. 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. The table below summarizes supplemental balance sheet information related to operating leases: September 30, 2024 December 31, 2023 (Dollars in thousands) Operating lease ROU assets $ 42,071 $ 46,611 Current portion of long-term lease liabilities 14,053 14,287 Long-term lease liabilities 32,962 38,383 The Company uses its incremental borrowing rate to present value lease payments in order to recognize a ROU asset and the related lease liability. The Company calculates its incremental borrowing rate by adding a spread to the FHLB borrowing interest rate at a given period. During the nine months ended September 30, 2024, the Company extended seven leases and did not enter into any new lease contracts. Lease extension terms ranged from three The Company wrote off $93 thousand in operating ROU assets resulting from the branch consolidation of one location during the nine months ended September 30, 2023. There was no impairment on operating ROU assets during the same period of 2024. The table below summarizes the Company’s net operating lease cost: Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 (Dollars in thousands) Operating lease cost $ 3,632 $ 3,852 $ 10,849 $ 11,518 Variable lease cost 1,004 946 2,679 2,549 Sublease income (70) (29) (173) (121) Net lease cost $ 4,566 $ 4,769 $ 13,355 $ 13,946 Rent expense for the three and nine months ended September 30, 2024, was $4.3 million and $12.7 million, respectively. Rent expense for the three and nine months ended September 30, 2023, was $4.5 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 2024 2023 (Dollars in thousands) Cash paid for amounts included in the measurement of lease liabilities: Operating cash outflows for operating leases $ 11,795 $ 11,968 ROU assets obtained in exchange for lease liabilities, net $ 5,490 $ 7,606 Weighted-average remaining lease term - operating leases 3.7 years 4.2 years Weighted-average discount rate - operating leases 3.07 % 2.75 % The table below summarizes the maturity of remaining lease liabilities: September 30, 2024 (Dollars in thousands) 2024 $ 3,948 2025 14,981 2026 14,338 2027 8,834 2028 4,052 2029 and thereafter 3,862 Total lease payments 50,015 Less: imputed interest 3,000 Total lease obligations $ 47,015 At September 30, 2024, the Company had no operating lease commitments that had not yet commenced. On October 1, 2024, the Company sold two of its branches located in Virginia (Annandale and Centreville) to PromiseOne Bank, a Georgia state bank. As part of the transaction, PromiseOne Bank took over the Company’s lease liabilities related to the branch locations sold. The Company did not have any finance leases at September 30, 2024 and December 31, 2023.

Deposits

Deposits	9 Months Ended
	Sep. 30, 2024
Deposits [Abstract]
Deposits	Deposits Total deposits of $14.73 billion at September 30, 2024, were down $24.3 million, or 0.2%, from $14.75 billion at December 31, 2023. The aggregate amount of time deposits in denominations of more than $250 thousand at September 30, 2024 and December 31, 2023, was $2.68 billion and $2.24 billion, respectively. Included in time deposits of more than $250 thousand was $300.0 million in California State Treasurer’s deposits at September 30, 2024 and December 31, 2023. 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, 2024 and December 31, 2023, securities with fair values of approximately $214.7 million and $218.7 million, respectively, and a $150.0 million letter of credit issued by the FHLB, were pledged as collateral for the California State Treasurer’s deposits. Brokered deposits at September 30, 2024 and December 31, 2023, totaled $1.01 billion and $1.54 billion, respectively. Brokered deposits at September 30, 2024, consisted of $278.3 million in money market and NOW accounts and $733.7 million in time deposit accounts. Brokered deposits at December 31, 2023, consisted of $164.1 million in money market and NOW accounts and $1.37 billion in time deposit accounts. The aggregate amount of unplanned overdrafts of demand deposits that were reclassified as loans was $2.7 million and $2.0 million at September 30, 2024 and December 31, 2023, respectively. The following is a breakdown of the Company’s deposits at September 30, 2024 and December 31, 2023: September 30, 2024 December 31, 2023 Balance Percentage (%) Balance Percentage (%) (Dollars in thousands) Noninterest bearing demand deposits $ 3,722,985 25 % $ 3,914,967 27 % Money market and NOW accounts 4,289,042 29 % 4,169,543 28 % Savings deposits 724,263 5 % 702,486 5 % Time deposits 5,993,208 41 % 5,966,757 40 % Total deposits $ 14,729,498 100 % $ 14,753,753 100 % On March 28, 2024, the Bank entered into a Purchase and Assumption Agreement with PromiseOne Bank, a Georgia state bank, to sell the deposits, other liabilities, and certain physical assets of the Bank’s two branches located in Virginia. The sale of the branches was completed on October 1, 2024 and as part of this transaction a total of $128.1 million in deposits was transferred to PromiseOne Bank.

Borrowings

Borrowings	9 Months Ended
	Sep. 30, 2024
Debt Disclosure [Abstract]
Borrowings	Borrowings At September 30, 2024, borrowings totaled $100.0 million, compared with $1.80 billion at December 31, 2023. All of the Company’s borrowings at September 30, 2024 and December 31, 2023, had maturities of less than 12 months. The tables below summarize the Company’s borrowing lines at September 30, 2024 and December 31, 2023: September 30, 2024 Total Borrowings Outstanding Available Borrowing Capacity Amount Weighted Average Rate (Dollars in thousands) FHLB $ 4,154,731 $ 100,000 5.59 % $ 4,054,731 FRB Discount Window 507,949 — — % 507,949 Unsecured Federal Funds lines 302,391 — — % 302,391 Total $ 4,965,071 $ 100,000 5.59 % $ 4,865,071 December 31, 2023 Total Borrowings Outstanding Available Borrowing Capacity Amount Weighted Average Rate (Dollars in thousands) FHLB $ 4,167,168 $ 100,000 5.73 % $ 4,067,168 FRB Discount Window 630,369 — — % 630,369 BTFP 1,707,909 1,695,726 4.47 % 12,183 Unsecured Federal Funds lines 312,315 — — % 312,315 Total $ 6,817,761 $ 1,795,726 4.54 % $ 5,022,035 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. The terms of this credit facility require the Company to pledge eligible collateral with the FHLB equal to at least 100% of outstanding advances. At September 30, 2024 and December 31, 2023, loans with a carrying amount of $7.73 billion and $7.60 billion were pledged at the FHLB for outstanding advances and remaining borrowing capacity, respectively. At September 30, 2024, other than FHLB stock, no securities were pledged as collateral to 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. As a member of the FRB system, the Bank may also borrow from the FRB discount window. 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, 2024, the outstanding principal balance of the qualifying loans pledged at the FRB discount window was $573.8 million. There were no investment securities pledged at the discount window at September 30, 2024. The Company availed itself of the BTFP, which was created in March 2023 to enhance banking system liquidity by allowing institutions to pledge certain securities at par value and borrow at a rate of ten basis points over the one-year overnight index swap rate. The BTFP was available to federally insured depository institutions in the U.S., with advances having a term of up to one year with no prepayment penalties. In 2023, the BTFP was available to federally insured depository institutions in the U.S. at a fixed rate of ten basis points over the one-year overnight index swap rate, but in 2024, the interest rate was no lower than the interest rate on reserve balances in effect on the day the loan is made. The Company’s outstanding borrowings at December 31, 2023 were not subject to the new rate. The BTFP ceased extending new advances in March 2024. All outstanding borrowings from the BTFP were paid off as of September 30, 2024. The Company also maintains unsecured federal funds borrowing lines with other banks. There were no borrowings outstanding from other banks at September 30, 2024 and December 31, 2023.

Subordinated Debentures and Con

Subordinated Debentures and Convertible Notes	9 Months Ended
	Sep. 30, 2024
Subordinated Borrowings [Abstract]
Subordinated Debentures and Convertible Notes	Convertible Notes and Subordinated Debentures 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 are not capital instruments but 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 represented 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. 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 have the option to put the notes back to the Company on 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. On May 15, 2023, most holders of the Company’s convertible notes elected to exercise their optional put right and the Company paid off $197.1 million principal amount of notes in cash. During 2023, the Company also repurchased its notes in the aggregate principal amount of $19.9 million and recorded a gain on debt extinguishment of $405 thousand. The repurchased notes were immediately cancelled subsequent to the repurchase. These repurchases are separate from the optional put and were made through a third-party broker. No notes were repurchased or paid off in the nine months ended September 30, 2024. The carrying value of the convertible notes at September 30, 2024 and December 31, 2023, was $444 thousand. The capitalized issuance costs were fully amortized at both September 30, 2024 and December 31, 2023. Interest expense on the convertible notes for the three and nine months ended September 30, 2024, totaled $2 thousand and $6 thousand, respectively. Interest expense on the convertible notes for the three and nine months ended September 30, 2023, totaled $2 thousand and $1.9 million, respectively.

Derivative Financial Instrument

Derivative Financial Instruments	9 Months Ended
	Sep. 30, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	Derivative Financial Instruments As part of the Company’s overall interest rate risk management, the Company enters into derivative instruments, including interest rate swaps, collars, caps, floors, foreign exchange contracts, risk participation agreements and mortgage banking derivatives. The notional amount does not represent amounts exchanged by the parties. The amount exchanged is determined by reference to the notional amount and the other terms of the individual agreements. Derivative instruments are recognized on the balance sheet at their fair value and are not reported on a net basis. The tables below present the fair value of the Company’s derivative financial instruments at September 30, 2024 and December 31, 2023. The Company’s derivative assets and derivative liabilities are located within “Other assets” and “Other liabilities,” respectively, on the Company’s Consolidated Statements of Financial Condition. September 30, 2024 Notional Fair Value (1) Other Assets Other Liabilities (Dollars in thousands) Derivatives designated as cash flow hedges Interest rate swaps $ 1,125,000 $ 4,899 $ — Interest rate collars 500,000 461 (18) Forward interest rate swaps 200,000 3,546 — Total $ 1,825,000 $ 8,906 $ (18) Derivatives not designated as hedges Interest rate contracts with correspondent banks $ 1,041,157 $ 35,477 $ (2,065) Interest rate contracts with customers 1,041,157 2,065 (36,337) Foreign exchange contracts with correspondent banks 13,018 45 (281) Foreign exchange contracts with customers 224 22 — Risk participation agreement 153,971 — (28) Mortgage banking derivatives 2,714 20 (15) Total $ 2,252,241 $ 37,629 $ (38,726) __________________________________ (1) The fair values of centrally-cleared derivative contracts are presented net of settled-to-market margin. December 31, 2023 Notional Fair Value (1) Other Assets Other Liabilities (Dollars in thousands) Derivatives designated as cash flow hedges Interest rate swaps $ 725,000 $ — $ — Interest rate collars 250,000 — 1,149 Forward interest rate swaps 1,000,000 10,812 — Forward interest rate collars 250,000 148 — Total $ 2,225,000 $ 10,960 $ 1,149 Derivatives not designated as hedges Interest rate contracts with correspondent banks $ 1,096,292 $ 53,185 $ 1,117 Interest rate contracts with customers 1,096,292 1,117 54,505 Foreign exchange contracts with correspondent banks 10,739 4 202 Foreign exchange contracts with customers 1,744 57 — Risk participation agreement 130,365 — 28 Mortgage banking derivatives 1,377 7 17 Total $ 2,336,809 $ 54,370 $ 55,869 __________________________________ (1) The fair values of centrally-cleared derivative contracts are presented net of settled-to-market margin. Derivatives designated as cash flow hedges The Company’s interest rate contracts designated as cash flow hedges were determined to be fully effective during the periods presented and were hedged to financial instruments tied to term SOFR and Federal Funds Rate. The aggregate fair value of the cash flow hedges are recorded in assets or liabilities on the Consolidated Statements of Financial Condition, with changes in fair value recorded in other comprehensive income on the Consolidated Statements of Comprehensive Income. The gain or loss on derivatives is recorded in accumulated other comprehensive income (“AOCI”) and is subsequently reclassified into interest income and interest expense in the period, during which the hedged forecasted transaction affects earnings. Amounts reported in AOCI related to interest rate agreements 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. The Company expects to reclassify, during the next 12 months, approximately $3.4 million, net of taxes, from AOCI as an increase to net interest income, net of a decrease of $2.3 million from terminated swaps. During 2024, the Company terminated $400.0 million in notional value of forward-starting received fixed swaps set to mature through July 2027. The swaps were designated as cash flow hedges on the changes in cash flows associated with certain variable rate loans. The termination of the swaps was performed to reduce prolonged exposure to higher interest rates. Prior to the termination of the swaps, the change in value of the swaps was recorded through accumulated other comprehensive income. The unamortized fair value adjustments on terminated forward-starting received fixed swaps was $6.4 million in pre-tax losses in AOCI at September 30, 2024, which will be amortized as a reduction to net interest income over an expected period of 2.8 years. The table below presents the gains (losses) on derivative instruments designated as cash flow hedges, that were reclassified from AOCI into earnings for the periods indicated: Derivative Instruments Designated as Cash Flow Hedges Location of Gain (Loss) Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 (Dollars in thousands) Interest rate contracts Interest income and fees on loans $ (2,724) $ — $ (4,710) $ — Interest rate contracts Interest expense on deposits 3,346 3,408 10,086 8,068 Interest rate contracts Interest expense on FHLB and FRB borrowings 1,371 1,284 4,189 3,524 Total $ 1,993 $ 4,692 $ 9,565 $ 11,592 Total cash held as collateral for interest rate contracts designated as cash flow hedges was $0 at September 30, 2024, and $22.9 million at December 31, 2023. Derivatives not designated as hedges The Company’s derivatives not designated as hedges are not speculative and result from a service the Company provides to certain customers. 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. Simultaneously, 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 interest rate contracts 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 Consolidated Statements of Income as other income and fees. 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 the Company’s foreign exchange rate risk. The Company also enters into certain foreign exchange contracts with institutional counterparties, including non-deliverable forward contracts, to manage its foreign exchange rate risk. 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, 2024, the changes in fair value on foreign exchange contracts were losses of $706 thousand and $72 thousand, respectively, and were recognized in the Consolidated Statements of Income as other income and fees. During the three and nine months ended September 30, 2023, the changes in fair value on foreign exchange contracts were gains of $96 thousand and $105 thousand, respectively, and were recognized in the Consolidated Statements of Income as other income and fees. At September 30, 2024, the Company had risk participation agreements with an outside counterparty for interest rate swaps related to loans in which it is a participant. The risk participation agreements provide credit protection to the financial institution should the borrowers fail to perform on their interest rate derivative contracts. 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 of credit derivatives are recognized directly in earnings. The fee received, less the estimate of the loss for credit exposure, is recognized in earnings at the time of the transaction. 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.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2024
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies The following table presents a summary of commitments described below at the dates indicated below: September 30, 2024 December 31, 2023 (Dollars in thousands) Commitments to extend credit $ 2,168,218 $ 2,274,239 Standby letters of credit 138,451 132,132 Other letters of credit 30,999 51,983 Commitments to fund affordable housing partnerships and CRA investments 17,860 21,017 The Company is a party to financial instruments with off-balance-sheet risk in the normal course of business to meet the financing needs of its 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 and other CRA investments. 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. The estimated exposure to loss from these commitments is included in the reserve for unfunded loan commitments, which amounted to $2.8 million at September 30, 2024, and $3.8 million at December 31, 2023. 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 $614 thousand at September 30, 2024, and $535 thousand at December 31, 2023. 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. Management believes that none of these legal claims, individually or in the aggregate, will have a material adverse effect on the results of operations or financial condition of the Company.

Goodwill, Intangible Assets, an

Goodwill, Intangible Assets, and Servicing Assets	9 Months Ended
	Sep. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill, Intangible Assets, and Servicing Assets	Goodwill, Intangible Assets, and Servicing Assets Goodwill The carrying amount of the Company’s goodwill at September 30, 2024, and December 31, 2023, was $464.5 million. There was no impairment of goodwill recorded during the three and nine months ended September 30, 2024. Goodwill and other intangible assets generated from business combinations and deemed to have indefinite lives are not subject to amortization and instead are tested for impairment annually at the reporting unit level unless a triggering event occurs thereby requiring an updated assessment. 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. Impairment exists when the carrying value of the goodwill exceeds the fair value of the reporting unit. At December 31, 2023, the Company performed a qualitative assessment to test for impairment and 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. Intangible Assets Amortization expense related to core deposit intangible assets totaled $401 thousand and $1.2 million for the three and nine months ended September 30, 2024, respectively. Amortization expense related to core deposit intangible assets totaled $448 thousand and $1.3 million for the three and nine months ended September 30, 2023, respectively. The following table provides information regarding the core deposit intangibles at September 30, 2024 and December 31, 2023: September 30, 2024 December 31, 2023 Core Deposit Intangibles Related To: Amortization Period Gross Accumulated Carrying Amount Accumulated Carrying Amount (Dollars in thousands) Wilshire Bancorp acquisition 10 years $ 18,138 $ (15,406) $ 2,732 $ (14,203) $ 3,935 Servicing Assets Total servicing assets at September 30, 2024, totaled $9.3 million and comprised $7.7 million in SBA servicing assets and $1.6 million in mortgage related servicing assets. At December 31, 2023, servicing assets totaled $9.6 million and comprised $7.6 million in SBA servicing assets and $2.1 million in mortgage related servicing assets. 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. At September 30, 2024 and December 31, 2023, 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, 2024 and 2023, were as follows: Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 (Dollars in thousands) Balance at beginning of period $ 8,984 $ 11,532 $ 9,631 $ 11,628 Additions through originations of servicing assets 1,090 36 1,839 1,885 Amortization (735) (1,111) (2,131) (3,056) Balance at end of period $ 9,339 $ 10,457 $ 9,339 $ 10,457 Loans serviced for others are not reported as assets. The principal balances of loans serviced for other institutions were $969.4 million at September 30, 2024, and $987.4 million at December 31, 2023. 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, 2024 and December 31, 2023, are presented below. September 30, 2024 December 31, 2023 SBA Servicing Assets: Weighted-average discount rate 10.10% 11.12% Constant prepayment rate 9.53% 12.17% Mortgage Servicing Assets: Weighted-average discount rate 10.25% 11.00% Constant prepayment rate 5.95% 9.52%

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2024
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes For the three months ended September 30, 2024, the Company recorded an income tax provision of $7.9 million on pretax income of $32.1 million, representing an effective tax rate of 24.74%, compared with an income tax provision of $10.0 million on pretax income of $40.0 million, representing an effective tax rate of 24.90% for the three months ended September 30, 2023. For the nine months ended September 30, 2024, the Company recorded an income tax provision totaling $27.2 million on pretax income of $102.5 million, representing an effective tax rate of 26.57%, compared with an income tax provision of $37.1 million on pretax income of $144.3 million, representing an effective tax rate of 25.71% for the nine months ended September 30, 2023. 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 $807 thousand at September 30, 2024, and $469 thousand at December 31, 2023, that relate to uncertainties associated with federal and state income tax matters. Management believes it is reasonably possible that the unrecognized tax benefits may decrease by $269 thousand in the next twelve months due to the expiration of statute of limitations. 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, 2024
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 Contracts The Company offers interest rate contracts 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 contract with the customer. The Company also enters into an offsetting interest rate contract 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. The fair value assets and liabilities of centrally cleared interest rate contracts are net of variation margin settled-to-market. Due to the observable nature of the inputs used in deriving the fair value of these derivative contracts, the valuation of interest rate contracts 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 contracts 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. Fair value assets and liabilities of centrally cleared derivatives are net of variation margin settled-to-market. Interest rate contracts designated as cash flow hedges and foreign exchange contracts, which includes non-deliverable forward 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 C&I 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. If Level 2 inputs are not available, carrying values 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, 2024 Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs (Dollars in thousands) Assets: Investment securities AFS: U.S. Government agency and U.S. Government sponsored enterprises: Agency securities $ 3,972 $ — $ 3,972 $ — Collateralized mortgage obligations 699,852 — 699,852 — Mortgage-backed securities: Residential 416,125 — 416,125 — Commercial 446,483 — 446,483 — Asset-backed securities 134,539 — 134,539 — Corporate securities 20,533 — 20,533 — Municipal securities 199,477 — 198,619 858 Equity investments with readily determinable fair value 4,455 4,455 — — Interest rate contracts 37,542 — 37,542 — Mortgage banking derivatives 20 — 20 — Other derivatives 8,973 — 8,973 — Liabilities: Interest rate contracts 38,402 — 38,402 — Mortgage banking derivatives 15 — 15 — Other derivatives 327 — 299 28 Fair Value Measurements at the End of December 31, 2023 Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs (Dollars in thousands) Assets: Investment securities AFS: U.S. Treasury securities $ 103,677 $ 103,677 $ — $ — U.S. Government agency and U.S. Government sponsored enterprises: Agency securities 3,900 — 3,900 — Collateralized mortgage obligations 747,719 — 747,719 — Mortgage-backed securities: Residential 420,298 — 420,298 — Commercial 391,888 — 391,888 — Asset-backed securities 149,670 — 149,670 — Corporate securities 19,434 — 19,434 — Municipal securities 308,473 — 307,615 858 Equity investments with readily determinable fair value 4,363 4,363 — — Interest rate contracts 54,302 — 54,302 — Mortgage banking derivatives 7 — 7 — Other derivatives 11,021 — 11,021 — Liabilities: Interest rate contracts 55,622 — 55,622 — Mortgage banking derivatives 17 — 17 — Other derivatives 1,379 — 1,351 28 There were no transfers between Levels 1, 2, and 3 during the three and nine months ended September 30, 2024 and 2023. 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, 2024 and 2023: Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 (Dollars in thousands) Municipal securities: Beginning Balance $ 815 $ 930 $ 858 $ 943 Change in fair value included in other comprehensive income 43 (77) — (90) Ending Balance $ 858 $ 853 $ 858 $ 853 Risk participation agreements: Beginning Balance $ 16 $ 28 $ 28 $ 32 Change in fair value included in income 12 (17) — (21) Ending Balance $ 28 $ 11 $ 28 $ 11 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, 2024 Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs (Dollars in thousands) Assets: Collateral-dependent loans receivable at fair value: CRE loans $ 33,067 $ — $ — $ 33,067 C&I loans 23,731 — — 23,731 Loans held for sale, net 23,717 — 23,717 — Fair Value Measurements at the End of December 31, 2023 Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs (Dollars in thousands) Assets: Collateral-dependent loans receivable at fair value: CRE loans $ 3,475 $ — $ — $ 3,475 C&I loans 2,701 — — 2,701 Loans held for sale, net 2,287 — 2,287 — OREO 63 — — 63 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: Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 (Dollars in thousands) Assets: Collateral-dependent loans receivable at fair value: CRE loans $ (839) $ (156) $ (942) $ (567) C&I loans (8,129) (1,768) (8,129) (2,157) Loans held for sale, net (1,552) (341) (4,406) (341) OREO — (37) — (308) The following table presents the quantitative information about the significant unobservable inputs used in the valuation of Level 3 fair value measurements that are measured on a nonrecurring basis as of September 30, 2024 and December 31, 2023: Fair Value Measurements (Level 3) Valuation Techniques Unobservable Inputs Range of Inputs Weighted-Average of Inputs ($ in thousands) September 30, 2024 Collateral dependent loans $ 41,012 Collateral Fair Value Selling cost 8.5% 8.5% 9,701 Enterprise Value Discount 19% 19% 6,085 Asset Fair Value Discount 39 % - 49% 47% December 31, 2023 Collateral dependent loans $ 4,468 Collateral Fair Value Selling cost 4.5 % - 8.5% 7.6% 1,708 Asset Fair Value Discount Rate 48% 48% OREO 63 Property Fair Value Selling cost 8.5% 8.5% Fair Value of Financial Instruments Carrying amounts and estimated fair values of financial instruments, not previously presented, at September 30, 2024 and December 31, 2023, were as follows: September 30, 2024 Carrying Amount Estimated Fair Value Fair Value Measurement (Dollars in thousands) Financial Assets: Cash and cash equivalents $ 680,857 $ 680,857 Level 1 Investment securities HTM 256,320 246,231 Level 2 Equity investments without readily determinable fair values 35,453 35,453 Level 2 Loans held for sale 25,714 25,750 Level 2 Loans receivable, net 13,464,718 13,116,503 Level 3 Accrued interest receivable 51,898 51,898 Level 2/3 Servicing assets, net 9,339 18,448 Level 3 Customers’ liabilities on acceptances 667 667 Level 2 Financial Liabilities: Noninterest bearing deposits $ 3,722,985 $ 3,722,985 Level 2 Money market, interest bearing demand and savings deposits 5,013,305 5,013,305 Level 2 Time deposits 5,993,208 6,002,923 Level 2 FHLB borrowings 100,000 100,253 Level 2 Convertible notes 444 440 Level 1 Subordinated debentures 108,805 103,926 Level 3 Accrued interest payable 107,017 107,017 Level 2 Acceptances outstanding 667 667 Level 2 December 31, 2023 Carrying Amount Estimated Fair Value Fair Value Measurement (Dollars in thousands) Financial Assets: Cash and cash equivalents $ 1,928,967 $ 1,928,967 Level 1 Investment securities HTM 263,912 250,518 Level 2 Equity investments without readily determinable fair values 39,387 39,387 Level 2 Loans held for sale 3,408 3,419 Level 2 Loans receivable, net 13,694,925 13,270,444 Level 3 Accrued interest receivable 61,720 61,720 Level 2/3 Servicing assets, net 9,631 14,853 Level 3 Customers’ liabilities on acceptances 471 471 Level 2 Financial Liabilities: Noninterest bearing deposits $ 3,914,967 $ 3,914,967 Level 2 Money market, interest bearing demand and savings deposits 4,872,029 4,872,029 Level 2 Time deposits 5,966,757 5,974,125 Level 2 FHLB and FRB borrowings 1,795,726 1,795,820 Level 2 Convertible notes, net 444 451 Level 1 Subordinated debentures 107,825 99,358 Level 3 Accrued interest payable 168,174 168,174 Level 2 Acceptances outstanding 471 471 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 was the estimated fair value for cash and cash equivalents, savings and other nonmaturity interest bearing demand deposits, equity investments without readily determinable fair values, customers’ 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 was determined through a discounted cash flow analysis, which incorporates probability of default and loss given default rates on an individual loan basis. For fixed rate loans, the discount rate used in a discounted cash flow analysis was based on the SOFR Swap Rate. For variable loans, the discount rate started with the underlying 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. Fair values of residential real estate loans included Fannie Mae and Freddie Mac prepayment speed assumptions or a third-party index based on historical prepayment speeds. Fair value of time deposits was based on discounted cash flow analyses 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 incorporated brokered time deposit offering rates. The fair value of the Company’s debt was based on current rates for similar financing with a liquidity premium added to assumed market spreads to reflect exit pricing and the marketability/liquidity costs contained with consummating an orderly transaction. Fair value for the Company’s convertible notes was 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 was not presented herein, as the fair value of these financial instruments was not material to the consolidated financial statements.

Stockholders' Equity

Stockholders' Equity	9 Months Ended
	Sep. 30, 2024
Equity [Abstract]
Stockholders’ Equity	Stockholders’ Equity Total stockholders’ equity at September 30, 2024, was $2.17 billion, compared with $2.12 billion at December 31, 2023. In January 2022, the Company’s Board of Directors approved a share repurchase program that authorized the Company to repurchase up to $50.0 million of its common stock, of which an estimated $35.3 million remained available at September 30, 2024. During the nine months ended September 30, 2024, the Company did not repurchase any shares of common stock as part of this program (see Part II, Item 2—“Unregistered Sales of Equity Securities and Use of Proceeds” for additional information). For the three months ended September 30, 2024 and 2023, the Company paid dividends of $0.14 per common share. For the nine months ended September 30, 2024 and 2023, the Company paid dividends of $0.42 per common share. The following table presents the changes to accumulated other comprehensive income for the three and nine months ended September 30, 2024 and 2023: Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 (Dollars in thousands) Balance at beginning of period $ (233,130) $ (228,884) $ (204,738) $ (230,857) Unrealized net gains (losses) on investment securities AFS 69,000 (68,261) 45,885 (68,117) Unrealized net gains (losses) on interest rate contracts used for cash flow hedges 3,178 (4,310) (7,758) 3,405 Reclassification adjustments for net gains realized in net income (847) (3,720) (7,019) (8,780) Tax effect (20,980) 22,490 (9,149) 21,664 Other comprehensive income (loss), net of tax 50,351 (53,801) 21,959 (51,828) Balance at end of period $ (182,779) $ (282,685) $ (182,779) $ (282,685) Reclassifications for net gains and losses realized in net income for the three and nine months ended September 30, 2024 and 2023, related to net gains on interest rate contracts designated as cash flow hedges, amortization on unrealized losses from transferred investment securities to HTM, and net gains on sales of investment securities. Gains and losses on interest rate contracts are recorded in interest income and expense in the Consolidated Statements of Income. The unrealized holding losses at the date of transfer on securities HTM will continue to be reported, net of taxes, in 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. For the three and nine months ended September 30, 2024, the Company reclassified net gains of $2.0 million and $9.6 million on interest rate contracts designated as cash flow hedges, respectively, from other comprehensive income to net interest income, compared with $4.7 million and $11.6 million for the three and nine months ended September 30, 2023, respectively. For the three and nine months ended September 30, 2024, the Company recorded a reclassification adjustment of $820 thousand and $2.6 million, respectively, from other comprehensive income to a reduction of interest income, to amortize transferred unrealized losses to investment securities HTM, compared with $972 thousand and $2.8 million for the three and nine months ended September 30, 2023, respectively. For the three and nine months ended September 30, 2024, the Company reclassified net losses of $326 thousand and net gains of $99 thousand on the sale of investment securities AFS, respectively, from other comprehensive income to noninterest income, compared with none for the three and nine months ended September 30, 2023, respectively.

Stock-Based Compensation

Stock-Based Compensation	9 Months Ended
	Sep. 30, 2024
Share-Based Payment Arrangement [Abstract]
Stock-Based Compensation	Stock-Based Compensation In May 2024, the Company’s stockholders approved the 2024 Equity Incentive Plan (the “2024 Plan”), which provides for grants of stock options, stock appreciation rights (“SAR”), restricted stock, performance shares, and performance units to non-employee directors and employees 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 2024 Plan provides the Company flexibility to (i) attract and retain qualified non-employee directors, executives, and other key employees with appropriate equity-based awards; (ii) motivate high levels of performance; (iii) recognize employees’ contributions to the Company’s success; and (iv) align the interests of the participants with those of the Company’s stockholders. The 2024 Plan reserved for 4,500,000 shares available for grant to participants. At September 30, 2024, there were 3,788,027 remaining shares available for future grants under the 2024 Plan. The pool of available shares can be partially replenished for future grants to the extent there are forfeitures, expirations or otherwise terminations of existing equity awards without issuance of the shares underlying such awards. 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 2024 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. The shares of common stock previously available under the 2019 Incentive Compensation Plan (the “2019 Plan”) will no longer be available for future grant. ISOs, SARs, and NQSOs have vesting periods of three With the exception of the shares that are 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 stock option activity under the Company’s plans for the nine months ended September 30, 2024: Number of Shares Weighted-Average Exercise Price Per Share Weighted-Average Aggregate Intrinsic Value (Dollars in thousands) Outstanding - January 1, 2024 629,367 $ 16.61 Granted — — Exercised — — Expired (208,136) 15.75 Forfeited — — Outstanding - September 30, 2024 421,231 $ 17.04 1.88 $ — Options exercisable - September 30, 2024 421,231 $ 17.04 1.88 $ — The following is a summary of the restricted stock and performance unit activity under the Company’s plans for the nine months ended September 30, 2024: Number of Shares Weighted-Average Grant Date Fair Value Outstanding (unvested) - January 1, 2024 2,043,621 $ 12.09 Granted 750,271 12.33 Vested (926,151) 12.60 Forfeited (128,436) 13.50 Outstanding (unvested) - September 30, 2024 1,739,305 $ 11.82 The total fair value of restricted stock and performance units vested during the nine months ended September 30, 2024 and 2023, was $10.1 million and $8.2 million, respectively. The total amounts charged against income related to stock-based payment arrangements were $2.1 million and $6.5 million for the three and nine months ended September 30, 2024, respectively. For the three and nine months ended September 30, 2023, $3.0 million and $8.8 million, respectively, of stock-based payment arrangements were charged against income. The income tax benefit recognized was approximately $610 thousand and $1.9 million for the three and nine months ended September 30, 2024, respectively, compared with $755 thousand and $2.3 million for the three and nine months ended September 30, 2023, respectively. Since all stock option grants were vested at September 30, 2024, 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 at September 30, 2024 was $12.5 million, and is expected to be recognized over a weighted average vesting period of 1.95 years.

Regulatory Matters

Regulatory Matters	9 Months Ended
	Sep. 30, 2024
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. At September 30, 2024, 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. At September 30, 2024 and December 31, 2023, 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 a minimum total capital ratio, Tier 1 capital ratio, common equity Tier 1 capital ratio, and leverage ratio 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 Ratio Required for Capital Adequacy Purposes Ratio Required To Be Well-Capitalized Ratio Required for Minimum Capital Adequacy With Capital Conservation Buffer September 30, 2024 Amount Ratio (Dollars in thousands) Common equity Tier 1 capital Company $ 1,890,666 13.07 % 4.50 % N/A 7.00 % Bank $ 1,968,612 13.62 % 4.50 % 6.50 % 7.00 % Tier 1 capital Company $ 1,995,570 13.79 % 6.00 % N/A 8.50 % Bank $ 1,968,612 13.62 % 6.00 % 8.00 % 8.50 % Total capital Company $ 2,143,477 14.82 % 8.00 % N/A 10.50 % Bank $ 2,116,519 14.64 % 8.00 % 10.00 % 10.50 % Leverage capital Company $ 1,995,570 11.61 % 4.00 % N/A N/A Bank $ 1,968,612 11.46 % 4.00 % 5.00 % N/A Actual Ratio Required for Capital Adequacy Purposes Ratio Required To Be Well-Capitalized Ratio Required for Minimum Capital Adequacy With Capital Conservation Buffer December 31, 2023 Amount Ratio (Dollars in thousands) Common equity Tier 1 capital Company $ 1,869,774 12.28 % 4.50 % N/A 7.00 % Bank $ 1,940,303 12.75 % 4.50 % 6.50 % 7.00 % Tier 1 capital Company $ 1,973,698 12.96 % 6.00 % N/A 8.50 % Bank $ 1,940,303 12.75 % 6.00 % 8.00 % 8.50 % Total capital Company $ 2,120,157 13.92 % 8.00 % N/A 10.50 % Bank $ 2,086,762 13.71 % 8.00 % 10.00 % 10.50 % Leverage capital Company $ 1,973,698 10.11 % 4.00 % N/A N/A Bank $ 1,940,303 9.94 % 4.00 % 5.00 % N/A

Revenue Recognition

Revenue Recognition	9 Months Ended
	Sep. 30, 2024
Revenue from Contract with Customer [Abstract]
Revenue Recognition	Revenue Recognition The Company recognizes revenue when obligations under the terms of a contract with customers are satisfied. ASU 2014-09 (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 and foreign currency 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, 2024 2023 2024 2023 (Dollars in thousands) Noninterest bearing deposit account income: Monthly service charges $ 240 $ 243 $ 728 $ 729 Customer analysis charges 1,460 1,292 4,409 3,677 NSF charges 844 763 2,463 2,209 Other service charges 81 93 235 273 Total noninterest bearing deposit account income 2,625 2,391 7,835 6,888 Interest bearing deposit account income: Monthly service charges 26 24 84 73 Total service fees on deposit accounts $ 2,651 $ 2,415 $ 7,919 $ 6,961 Wire transfer fee income: Wire transfer fees $ 359 $ 400 $ 1,117 $ 1,268 Foreign exchange fees 567 406 1,595 1,161 Total wire transfer and foreign currency fees $ 926 $ 806 $ 2,712 $ 2,429

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 30, 2024
Subsequent Events [Abstract]
Subsequent Events	Subsequent EventsOn October 30, 2024, the Company entered into an agreement to invest $20.0 million in a solar tax credit investment fund. The Company expects to receive tax benefits in the form of tax deductions from its investment in the solar tax credit investment. Most of the tax credits are expected to be recorded in 2024 and 2025, which will reduce the Company’s overall effective tax rate for these years. The Company will account for the solar tax credit investments using the proportional amortization method.

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Pay vs Performance Disclosure
Basic EPS - common stock	$ 24,159	$ 30,049	$ 75,293	$ 107,192

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Sep. 30, 2024
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Basis of Presentation (Policies

Basis of Presentation (Policies)	9 Months Ended
	Sep. 30, 2024
Basis Of Presentation [Abstract]
Consolidation	The consolidated financial statements include the accounts of Hope Bancorp and its wholly owned subsidiaries, principally the Bank. 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, 2024 and December 31, 2023, and the results of operations for the three and nine months ended September 30, 2024 and 2023. 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.
Unfunded Commitments	The allowance for unfunded commitments is recognized as a liability (other liabilities in the Consolidated Statements of Financial Condition), with adjustments to the allowance for unfunded commitments recognized through provision for credit losses in the Consolidated Statements of Income.
Adopted Accounting Policies	Adopted Accounting Policies In 2024, the Company adopted ASU 2023-02 - “Investments-Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method”. During the third quarter of 2024, the Company made an adjustment related to the adoption of ASU 2023-02 and recorded $15.1 million in the derecognition of delayed contribution liabilities related to the Company’s investments in affordable housing partnerships, as balance sheet adjustments. In addition, the Company recorded adjustments to equity including a $1.1 million adjustment to retained earnings net of a $472 thousand reduction to account for deferred tax assets. Recently Issued Accounting Pronouncements Not Yet Adopted
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 CRE loans Property type, location, owner-occupied status C&I loans Delinquency status, risk rating, industry type Residential mortgage loans FICO score, LTV, delinquency status, maturity date, collateral value, location Consumer and other loans 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 the calculation of the allowance for credit losses for collectively assessed loans. The Company uses a reasonable and supportable period of two years, at which point loss assumptions revert back to historical loss information by means of a one-year reversion period. Included in the quantitative portion of the ACL analysis are inputs such as borrowers’ net operating income, debt coverage ratios, real estate collateral values, as well as factors that are more subjective or require management’s judgment, including key macroeconomic variables from Moody’s forecast scenarios such as GDP, unemployment rates, interest rates, and CRE 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 that utilizes 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 the aggregate, non-modeled loans represented less than 2% of the Company’s total loan portfolio at September 30, 2024. 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. At September 30, 2024, the Company utilized the September 2024 consensus economic forecast scenario from Moody’s, as it best aligned with management’s expectations of future conditions. The forecast projected GDP growth of 2.6% in 2024, 1.8% for 2025, and 1.9% for 2026, with unemployment projected to be 4.1% for 2024, 4.2% for 2025, and 4.1% in 2026. CRE prices in the consensus scenario were expected to decrease initially, with the CRE price index declining -3.4% for 2024, before rebounding +6.8% for 2025 and +7.4% in 2026. The Company also utilized Moody’s December 2023 consensus economic forecast for the calculation of the December 31, 2023 ACL. In order to 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 Interagency Policy Statement on the Allowance for Credit 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, and other loan modifications; • Changes in the quality of the loan review system and the degree of oversight by the management and the Board of 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 that do not share similar risk characteristics such as nonaccrual loans above $1.0 million, the Company evaluates these loans on an individual basis in accordance with ASC 326. Such nonaccrual loans are considered to have different risk profiles than performing loans and are therefore evaluated individually. The Company elected to collectively assess 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 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 loss on loans. 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 look-back period of eight 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, 2024
Earnings Per Share [Abstract]
Computation of basic and diluted EPS	The following tables present computations of basic and diluted EPS for the three and nine months ended September 30, 2024 and 2023. Three Months Ended September 30, 2024 2023 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 $ 24,159 120,734,581 $ 0.20 $ 30,049 120,020,567 $ 0.25 Effect of dilutive securities: Stock options and restricted stock 425,396 354,051 Diluted EPS - common stock $ 24,159 121,159,977 $ 0.20 $ 30,049 120,374,618 $ 0.25 Nine Months Ended September 30, 2024 2023 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 $ 75,293 120,529,535 $ 0.62 $ 107,192 119,843,382 $ 0.89 Effect of dilutive securities: Stock options and restricted stock 498,258 406,570 Diluted EPS - common stock $ 75,293 121,027,793 $ 0.62 $ 107,192 120,249,952 $ 0.89

Equity Investments (Tables)

Equity Investments (Tables)	9 Months Ended
	Sep. 30, 2024
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, 2024 and 2023, were recorded in other noninterest income and fees as summarized in the table below: Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 (Dollars in thousands) Net change in fair value recorded during the period on equity investments with readily determinable fair value $ 157 $ (134) $ 92 $ (134) Less: Net change in fair value recorded on equity investments sold during the period — — — — Net change in fair value on equity investments with readily determinable fair values held at the end of the period $ 157 $ (134) $ 92 $ (134)

Securities Available for Sale (

Securities Available for Sale (Tables)	9 Months Ended
	Sep. 30, 2024
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, 2024 December 31, 2023 Amortized Gross Gross Fair Amortized Gross Gross Fair (Dollars in thousands) Debt securities AFS: U.S. Treasury securities $ — $ — $ — $ — $ 103,691 $ 21 $ (35) $ 103,677 U.S. Government agency and U.S. Government sponsored enterprises: Agency securities 4,000 — (28) 3,972 4,000 — (100) 3,900 Collateralized mortgage obligations (“CMO”) 818,736 699 (119,583) 699,852 888,631 367 (141,279) 747,719 Mortgage-backed securities (“MBS”): Residential 483,454 — (67,329) 416,125 499,431 — (79,133) 420,298 Commercial 489,374 1,524 (44,415) 446,483 445,207 113 (53,432) 391,888 Asset-backed securities 134,324 281 (66) 134,539 150,992 — (1,322) 149,670 Corporate securities 23,266 — (2,733) 20,533 23,302 — (3,868) 19,434 Municipal securities 206,790 2,697 (10,010) 199,477 314,554 5,698 (11,779) 308,473 Total investment securities AFS $ 2,159,944 $ 5,201 $ (244,164) $ 1,920,981 $ 2,429,808 $ 6,199 $ (290,948) $ 2,145,059 Debt securities HTM: U.S. Government agency and U.S. Government sponsored enterprises: MBS: Residential $ 144,493 $ — $ (4,804) $ 139,689 $ 150,369 $ — $ (6,663) $ 143,706 Commercial 111,827 18 (5,303) 106,542 113,543 — (6,731) 106,812 Total investment securities HTM $ 256,320 $ 18 $ (10,107) $ 246,231 $ 263,912 $ — $ (13,394) $ 250,518
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, 2024 2023 2024 2023 (Dollars in thousands) Interest income on investment securities Taxable $ 15,948 $ 15,884 $ 48,896 $ 44,396 Nontaxable 793 1,122 2,723 3,269 Total $ 16,741 $ 17,006 $ 51,619 $ 47,665
Investments Classified by Contractual Maturity Date	The amortized cost and estimated fair value of investment securities at September 30, 2024, 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 $ — $ — $ — $ — Due after one year through five years 143,758 138,873 24,930 24,803 Due after five years through ten years 140,052 134,267 8,770 8,650 Due after ten years 1,876,134 1,647,841 222,620 212,778 Total $ 2,159,944 $ 1,920,981 $ 256,320 $ 246,231
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, 2024 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 — $ — $ — — $ — $ — — $ — $ — U.S. Government agency and U.S. Government sponsored enterprises: Agency securities — — — 1 3,972 (28) 1 3,972 (28) CMOs — — — 95 672,967 (119,583) 95 672,967 (119,583) MBS: Residential 1 17,688 (168) 64 398,437 (67,161) 65 416,125 (67,329) Commercial 5 33,500 (945) 56 344,770 (43,470) 61 378,270 (44,415) Asset-backed securities 5 39,008 (66) — — — 5 39,008 (66) Corporate securities — — — 6 20,533 (2,733) 6 20,533 (2,733) Municipal securities 5 19,347 (510) 39 88,451 (9,500) 44 107,798 (10,010) Total 16 $ 109,543 $ (1,689) 261 $ 1,529,130 $ (242,475) 277 $ 1,638,673 $ (244,164) December 31, 2023 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 $ 3,963 $ (35) 1 $ 3,963 $ (35) U.S. Government agency and U.S. Government sponsored enterprises: Agency securities — — — 1 3,900 (100) 1 3,900 (100) CMOs 3 19,800 (378) 115 717,662 (140,901) 118 737,462 (141,279) MBS: Residential — — — 65 420,298 (79,133) 65 420,298 (79,133) Commercial 6 53,255 (2,129) 53 331,450 (51,303) 59 384,705 (53,432) Asset-backed securities — — — 18 149,670 (1,322) 18 149,670 (1,322) Corporate securities — — — 6 19,434 (3,868) 6 19,434 (3,868) Municipal securities 11 42,760 (263) 42 91,707 (11,516) 53 134,467 (11,779) Total 20 $ 115,815 $ (2,770) 301 $ 1,738,084 $ (288,178) 321 $ 1,853,899 $ (290,948)

Loans Receivable and Allowanc_2

Loans Receivable and Allowance for Credit Losses (Tables)	9 Months Ended
	Sep. 30, 2024
Receivables [Abstract]
Summary of Loans Receivable by Major Category	The following is a summary of loans receivable by segment: September 30, 2024 December 31, 2023 (Dollars in thousands) Loan portfolio composition Commercial real estate (“CRE”) loans $ 8,630,757 $ 8,797,884 Commercial and industrial (“C&I”) loans 3,901,368 4,135,044 Residential mortgage loans 1,047,556 883,687 Consumer and other loans 38,307 37,004 Total loans receivable, net of deferred costs and fees 13,617,988 13,853,619 Allowance for credit losses (153,270) (158,694) Loans receivable, net of allowance for credit losses $ 13,464,718 $ 13,694,925
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, 2024 and 2023. CRE Loans C&I Loans Residential Mortgage Loans Consumer and Other Loans Total (Dollars in thousands) Three Months Ended September 30, 2024 Balance, beginning of period $ 95,643 $ 56,014 $ 3,909 $ 453 $ 156,019 Provision (credit) for credit loss on loans (3,943) 6,314 515 114 3,000 Loans charged off (390) (5,767) — (126) (6,283) Recoveries of charge offs 18 480 — 36 534 Balance, end of period $ 91,328 $ 57,041 $ 4,424 $ 477 $ 153,270 Nine Months Ended September 30, 2024 Balance, beginning of period $ 93,940 $ 51,291 $ 12,838 $ 625 $ 158,694 Provision (credit) for credit loss on loans (2,223) 19,009 (8,414) (72) 8,300 Loans charged off (948) (16,358) — (235) (17,541) Recoveries of charge offs 559 3,099 — 159 3,817 Balance, end of period $ 91,328 $ 57,041 $ 4,424 $ 477 $ 153,270 CRE Loans C&I Loans Residential Mortgage Loans Consumer and Other Loans Total (Dollars in thousands) Three Months Ended September 30, 2023 Balance, beginning of period $ 105,321 $ 54,894 $ 11,983 $ 798 $ 172,996 Provision (credit) for credit loss on loans (10,852) 27,713 13 (74) 16,800 Loans charged off (631) (33,219) — (75) (33,925) Recoveries of charge offs 2,898 34 — 6 2,938 Balance, end of period $ 96,736 $ 49,422 $ 11,996 $ 655 $ 158,809 Nine Months Ended September 30, 2023 Balance, beginning of period $ 95,884 $ 56,872 $ 8,920 $ 683 $ 162,359 ASU 2022-02 day 1 adoption adjustment 19 (426) — — $ (407) Provision (credit) for credit loss on loans (1,065) 25,226 3,076 163 27,400 Loans charged off (1,192) (33,957) — (250) (35,399) Recoveries of charge offs 3,090 1,707 — 59 4,856 Balance, end of period $ 96,736 $ 49,422 $ 11,996 $ 655 $ 158,809 The following tables break out the allowance for credit losses and loan balance by measurement methodology at September 30, 2024 and December 31, 2023: September 30, 2024 CRE Loans C&I Loans Residential Mortgage Loans Consumer and Other Loans Total (Dollars in thousands) Allowance for credit losses: Individually evaluated $ 3,238 $ 4,685 $ 163 $ 17 $ 8,103 Collectively evaluated 88,090 52,356 4,261 460 145,167 Total $ 91,328 $ 57,041 $ 4,424 $ 477 $ 153,270 Loans outstanding: Individually evaluated $ 72,125 $ 24,963 $ 6,363 $ 42 $ 103,493 Collectively evaluated 8,558,632 3,876,405 1,041,193 38,265 13,514,495 Total $ 8,630,757 $ 3,901,368 $ 1,047,556 $ 38,307 $ 13,617,988 December 31, 2023 CRE Loans C&I Loans Residential Mortgage Loans Consumer and Other Loans Total (Dollars in thousands) Allowance for credit losses: Individually evaluated $ 886 $ 1,721 $ 39 $ 14 $ 2,660 Collectively evaluated 93,054 49,570 12,799 611 156,034 Total $ 93,940 $ 51,291 $ 12,838 $ 625 $ 158,694 Loans outstanding: Individually evaluated $ 33,932 $ 5,013 $ 5,916 $ 343 $ 45,204 Collectively evaluated 8,763,952 4,130,031 877,771 36,661 13,808,415 Total $ 8,797,884 $ 4,135,044 $ 883,687 $ 37,004 $ 13,853,619
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, as well as loans past due 90 or more days and still on accrual status, by loan segment and broken out by loans with a recorded ACL and those without a recorded ACL, at September 30, 2024 and December 31, 2023. September 30, 2024 Nonaccrual with No ACL Nonaccrual with an ACL Total Nonaccrual (1) Accruing Loans Past Due 90 Days or More (Dollars in thousands) CRE loans $ 19,788 $ 52,440 $ 72,228 $ — C&I loans 3,811 21,152 24,963 128 Residential mortgage loans 2,969 3,394 6,363 — Consumer and other loans — 48 48 98 Total $ 26,568 $ 77,034 $ 103,602 $ 226 December 31, 2023 Nonaccrual with No ACL Nonaccrual with an ACL Total Nonaccrual (1) Accruing Loans Past Due 90 Days or More (Dollars in thousands) CRE loans $ 26,724 $ 7,208 $ 33,932 $ — C&I loans 2,447 2,566 5,013 184 Residential mortgage loans 3,002 2,914 5,916 — Consumer and other loans — 343 343 77 Total $ 32,173 $ 13,031 $ 45,204 $ 261 __________________________________ (1)
Amortized Cost Basis of Collateral-Dependent Loans	The following table presents the amortized cost of collateral-dependent loans at September 30, 2024 and December 31, 2023: September 30, 2024 December 31, 2023 Real Estate Collateral Other Collateral Total Real Estate Collateral Other Collateral Total (Dollars in thousands) CRE loans $ 51,505 $ — $ 51,505 $ 29,803 $ — $ 29,803 C&I loans 1,383 22,432 23,815 2,447 1,708 4,155 Residential mortgage loans 2,969 — 2,969 3,002 — 3,002 Total $ 55,857 $ 22,432 $ 78,289 $ 35,252 $ 1,708 $ 36,960
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, 2024 and 2023: Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 (Dollars in thousands) CRE loans $ 1,867 $ 176 $ 2,119 $ 841 C&I loans 263 216 1,976 1,102 Residential mortgage loans 2 — 10 32 Total $ 2,132 $ 392 $ 4,105 $ 1,975
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 at September 30, 2024 and December 31, 2023, by loan segment: September 30, 2024 December 31, 2023 30-59 Days 60-89 Days 90 Days or More Total 30-59 Days 60-89 Days 90 Days or More Total (Dollars in thousands) CRE loans $ 715 $ 60,707 $ 6,403 $ 67,825 $ 1,999 $ 2,976 $ 10,197 $ 15,172 C&I loans 9,037 3,898 8,537 21,472 934 533 1,717 3,184 Residential mortgage loans 899 1,805 2,995 5,699 1,534 — 2,339 3,873 Consumer and other loans 132 92 106 330 214 48 77 339 Total Past Due $ 10,783 $ 66,502 $ 18,041 $ 95,326 $ 4,681 $ 3,557 $ 14,330 $ 22,568
Financing Receivable Credit Quality Indicators	The following table presents the amortized cost basis of loans receivable by segment, risk rating, and year of origination, renewal, or major modification at September 30, 2024 and December 31, 2023. September 30, 2024 Term Loan by Year Revolving Loans Total 2024 2023 2022 2021 2020 Prior (Dollars in thousands) CRE loans Pass $ 591,743 $ 580,884 $ 2,352,878 $ 1,925,051 $ 1,148,074 $ 1,752,263 $ 110,552 $ 8,461,445 Special mention — 14,998 2,651 5,105 — 13,677 799 37,230 Substandard — 970 2,417 49,587 34,863 44,245 — 132,082 Subtotal $ 591,743 $ 596,852 $ 2,357,946 $ 1,979,743 $ 1,182,937 $ 1,810,185 $ 111,351 $ 8,630,757 Year-to-date gross charge offs $ — $ — $ 165 $ — $ 101 $ 682 $ — $ 948 C&I loans Pass $ 1,040,295 $ 619,685 $ 854,235 $ 362,372 $ 114,366 $ 52,954 $ 527,712 $ 3,571,619 Special mention — 32,972 18,914 35,072 — 14,974 45,281 147,213 Substandard 3,510 15,707 79,919 18,975 113 985 56,924 176,133 Doubtful / loss 6,403 — — — — — — 6,403 Subtotal $ 1,050,208 $ 668,364 $ 953,068 $ 416,419 $ 114,479 $ 68,913 $ 629,917 $ 3,901,368 Year-to-date gross charge offs $ — $ 319 $ 15,833 $ 107 $ — $ 99 $ — $ 16,358 Residential mortgage loans Pass $ 222,238 $ 85,858 $ 351,541 $ 244,871 $ 1,328 $ 135,103 $ — $ 1,040,939 Special mention — — — — — — — — Substandard — — — 972 1,836 3,809 — 6,617 Subtotal $ 222,238 $ 85,858 $ 351,541 $ 245,843 $ 3,164 $ 138,912 $ — $ 1,047,556 Year-to-date gross charge offs $ — $ — $ — $ — $ — $ — $ — $ — Consumer and other loans Pass $ 6,480 $ 676 $ 212 $ 192 $ 1,157 $ 8,458 $ 21,084 $ 38,259 Special mention — — — — — — — — Substandard — — — — — 48 — 48 Subtotal $ 6,480 $ 676 $ 212 $ 192 $ 1,157 $ 8,506 $ 21,084 $ 38,307 Year-to-date gross charge offs $ — $ — $ — $ — $ — $ — $ 235 $ 235 Total loans Pass $ 1,860,756 $ 1,287,103 $ 3,558,866 $ 2,532,486 $ 1,264,925 $ 1,948,778 $ 659,348 $ 13,112,262 Special mention — 47,970 21,565 40,177 — 28,651 46,080 184,443 Substandard 3,510 16,677 82,336 69,534 36,812 49,087 56,924 314,880 Doubtful / loss 6,403 — — — — — — 6,403 Total $ 1,870,669 $ 1,351,750 $ 3,662,767 $ 2,642,197 $ 1,301,737 $ 2,026,516 $ 762,352 $ 13,617,988 Total year-to-date gross charge offs $ — $ 319 $ 15,998 $ 107 $ 101 $ 781 $ 235 $ 17,541 December 31, 2023 Term Loan by Year Revolving Loans Total 2023 2022 2021 2020 2019 Prior (Dollars in thousands) CRE loans Pass $ 623,058 $ 2,429,146 $ 2,045,863 $ 1,239,654 $ 996,483 $ 1,297,295 $ 79,426 $ 8,710,925 Special mention — 2,001 15,452 2,518 5,963 5,196 — 31,130 Substandard — 1,549 7,300 2,711 2,083 42,186 — 55,829 Subtotal $ 623,058 $ 2,432,696 $ 2,068,615 $ 1,244,883 $ 1,004,529 $ 1,344,677 $ 79,426 $ 8,797,884 Year-to-date gross charge offs $ 103 $ 315 $ — $ 233 $ 355 $ 1,941 $ — $ 2,947 C&I loans Pass $ 1,107,219 $ 1,208,795 $ 683,821 $ 203,142 $ 162,815 $ 61,019 $ 479,266 $ 3,906,077 Special mention 9,743 23,413 31,388 8,597 14,614 — 60,107 147,862 Substandard 7,158 53,213 8,480 8,637 290 2,358 969 81,105 Subtotal $ 1,124,120 $ 1,285,421 $ 723,689 $ 220,376 $ 177,719 $ 63,377 $ 540,342 $ 4,135,044 Year-to-date gross charge offs $ 5,011 $ 12,323 $ 16,020 $ 128 $ 182 $ 539 $ — $ 34,203 Residential mortgage loans Pass $ 93,982 $ 365,252 $ 263,977 $ 1,356 $ 29,063 $ 123,885 $ — $ 877,515 Special mention — — — — — — — — Substandard — — 314 1,836 957 3,065 — 6,172 Subtotal $ 93,982 $ 365,252 $ 264,291 $ 3,192 $ 30,020 $ 126,950 $ — $ 883,687 Year-to-date gross charge offs $ — $ — $ — $ — $ — $ — $ — $ — Consumer and other loans Pass $ 3,985 $ 944 $ 278 $ 2,068 $ 371 $ 8,221 $ 20,794 $ 36,661 Special mention — — — — — — — — Substandard — — — — — 343 — 343 Subtotal $ 3,985 $ 944 $ 278 $ 2,068 $ 371 $ 8,564 $ 20,794 $ 37,004 Year-to-date gross charge offs $ — $ — $ — $ — $ — $ — $ 370 $ 370 Total loans Pass $ 1,828,244 $ 4,004,137 $ 2,993,939 $ 1,446,220 $ 1,188,732 $ 1,490,420 $ 579,486 $ 13,531,178 Special mention 9,743 25,414 46,840 11,115 20,577 5,196 60,107 178,992 Substandard 7,158 54,762 16,094 13,184 3,330 47,952 969 143,449 Total $ 1,845,145 $ 4,084,313 $ 3,056,873 $ 1,470,519 $ 1,212,639 $ 1,543,568 $ 640,562 $ 13,853,619 Total year-to-date gross charge offs $ 5,114 $ 12,638 $ 16,020 $ 361 $ 537 $ 2,480 $ 370 $ 37,520 For the three and nine months ended September 30, 2024 and the twelve months ended December 31, 2023, there were no revolving loans converted to term loans.
Loans Sold From Loans Held For Investment	The breakdown of loans by segment that were reclassified from held for investment to held for sale for the three and nine months ended September 30, 2024 and 2023, is presented in the following table: Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 Transfer of loans held for investment to held for sale (Dollars in thousands) CRE loans $ 17,110 $ 30,302 $ 70,861 $ 97,078 C&I loans 13,690 114,725 70,133 285,208 Total $ 30,800 $ 145,027 $ 140,994 $ 382,286
Summary of Loans Modified	A summary of loans modified to borrowers experiencing financial difficulty for the period presented, disaggregated by loan class and type of modification, is shown in the tables below. Three Months Ended September 30, 2024 CRE Loans C&I Loans Residential Mortgage Loans Consumer and Other Loans Total (Dollars in thousands) Principal forgiveness $ — $ — $ — $ — $ — Interest rate reduction — — — — — Payment delay — — — — — Term extension 13 26,732 — — 26,745 Total Loan Modifications $ 13 $ 26,732 $ — $ — $ 26,745 % of Loan Class — % 0.69 % — % — % 0.20 % Nine Months Ended September 30, 2024 CRE Loans C&I Loans Residential Mortgage Loans Consumer and Other Loans Total (Dollars in thousands) Principal forgiveness $ — $ 9,701 $ — $ — $ 9,701 Interest rate reduction — — — — — Payment delay — — — — — Term extension 13 33,581 — — 33,594 Total Loan Modifications $ 13 $ 43,282 $ — $ — $ 43,295 % of Loan Class — % 1.11 % — % — % 0.32 % Three Months Ended September 30, 2023 CRE Loans C&I Loans Residential Mortgage Loans Consumer and Other Loans Total (Dollars in thousands) Principal forgiveness $ — $ — $ — $ — $ — Interest rate reduction — — — — — Payment delay — — — — — Term extension 1,119 2,299 — — 3,418 Total Loan Modifications $ 1,119 $ 2,299 $ — $ — $ 3,418 % of Loan Class 0.01 % 0.05 % — % — % 0.02 % Nine Months Ended September 30, 2023 CRE Loans C&I Loans Residential Mortgage Loans Consumer and Other Loans Total (Dollars in thousands) Principal forgiveness $ — $ — $ — $ — $ — Interest rate reduction — — — — — Payment delay — — — — — Term extension 1,119 25,449 — — 26,568 Total Loan Modifications $ 1,119 $ 25,449 $ — $ — $ 26,568 % of Loan Class 0.01 % 0.57 % — % — % 0.19 % The following tables describe the financial effect of the loan modifications made to borrowers experiencing financial difficulty for the periods presented: Financial Effect Modification & Loan Types Description of Financial Effect Three Months Ended September 30, 2024 Nine Months Ended September 30, 2024 Principal forgiveness C&I loans Forgiveness of principal totaling: $— million $4.4 million Term extension CRE loans Extended term by a weighted average of: 0.3 years 0.3 years C&I loans Extended term by a weighted average of: 0.3 years 0.3 years Financial Effect Modification & Loan Types Description of Financial Effect Three Months Ended September 30, 2023 Nine Months Ended September 30, 2023 Term extension CRE loans Extended term by a weighted average of: 0.3 years 0.3 years C&I loans Extended term by a weighted average of: 0.3 years 0.3 years

Leases (Tables)

Leases (Tables)	9 Months Ended
	Sep. 30, 2024
Leases [Abstract]
Summary of Net Lease Cost and Other Information	The table below summarizes the Company’s net operating lease cost: Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 (Dollars in thousands) Operating lease cost $ 3,632 $ 3,852 $ 10,849 $ 11,518 Variable lease cost 1,004 946 2,679 2,549 Sublease income (70) (29) (173) (121) Net lease cost $ 4,566 $ 4,769 $ 13,355 $ 13,946 The table below summarizes other information related to the Company’s operating leases: At or for the Nine Months Ended 2024 2023 (Dollars in thousands) Cash paid for amounts included in the measurement of lease liabilities: Operating cash outflows for operating leases $ 11,795 $ 11,968 ROU assets obtained in exchange for lease liabilities, net $ 5,490 $ 7,606 Weighted-average remaining lease term - operating leases 3.7 years 4.2 years Weighted-average discount rate - operating leases 3.07 % 2.75 %
Summary of Maturity of Remaining Lease Liabilities	The table below summarizes the maturity of remaining lease liabilities: September 30, 2024 (Dollars in thousands) 2024 $ 3,948 2025 14,981 2026 14,338 2027 8,834 2028 4,052 2029 and thereafter 3,862 Total lease payments 50,015 Less: imputed interest 3,000 Total lease obligations $ 47,015

Deposits (Tables)

Deposits (Tables)	9 Months Ended
	Sep. 30, 2024
Deposits [Abstract]
Schedule of Deposits	The following is a breakdown of the Company’s deposits at September 30, 2024 and December 31, 2023: September 30, 2024 December 31, 2023 Balance Percentage (%) Balance Percentage (%) (Dollars in thousands) Noninterest bearing demand deposits $ 3,722,985 25 % $ 3,914,967 27 % Money market and NOW accounts 4,289,042 29 % 4,169,543 28 % Savings deposits 724,263 5 % 702,486 5 % Time deposits 5,993,208 41 % 5,966,757 40 % Total deposits $ 14,729,498 100 % $ 14,753,753 100 %

Borrowings (Tables)

Borrowings (Tables)	9 Months Ended
	Sep. 30, 2024
Debt Disclosure [Abstract]
Schedule of Borrowing Lines	The tables below summarize the Company’s borrowing lines at September 30, 2024 and December 31, 2023: September 30, 2024 Total Borrowings Outstanding Available Borrowing Capacity Amount Weighted Average Rate (Dollars in thousands) FHLB $ 4,154,731 $ 100,000 5.59 % $ 4,054,731 FRB Discount Window 507,949 — — % 507,949 Unsecured Federal Funds lines 302,391 — — % 302,391 Total $ 4,965,071 $ 100,000 5.59 % $ 4,865,071 December 31, 2023 Total Borrowings Outstanding Available Borrowing Capacity Amount Weighted Average Rate (Dollars in thousands) FHLB $ 4,167,168 $ 100,000 5.73 % $ 4,067,168 FRB Discount Window 630,369 — — % 630,369 BTFP 1,707,909 1,695,726 4.47 % 12,183 Unsecured Federal Funds lines 312,315 — — % 312,315 Total $ 6,817,761 $ 1,795,726 4.54 % $ 5,022,035

Subordinated Debentures and C_2

Subordinated Debentures and Convertible Notes (Tables)	9 Months Ended
	Sep. 30, 2024
Subordinated Borrowings [Abstract]
Convertible Debt	The carrying value of the convertible notes at September 30, 2024 and December 31, 2023, was $444 thousand. The capitalized issuance costs were fully amortized at both September 30, 2024 and December 31, 2023. Interest expense on the convertible notes for the three and nine months ended September 30, 2024, totaled $2 thousand and $6 thousand, respectively. Interest expense on the convertible notes for the three and nine months ended September 30, 2023, totaled $2 thousand and $1.9 million, respectively.

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments, Fair Value	The tables below present the fair value of the Company’s derivative financial instruments at September 30, 2024 and December 31, 2023. The Company’s derivative assets and derivative liabilities are located within “Other assets” and “Other liabilities,” respectively, on the Company’s Consolidated Statements of Financial Condition. September 30, 2024 Notional Fair Value (1) Other Assets Other Liabilities (Dollars in thousands) Derivatives designated as cash flow hedges Interest rate swaps $ 1,125,000 $ 4,899 $ — Interest rate collars 500,000 461 (18) Forward interest rate swaps 200,000 3,546 — Total $ 1,825,000 $ 8,906 $ (18) Derivatives not designated as hedges Interest rate contracts with correspondent banks $ 1,041,157 $ 35,477 $ (2,065) Interest rate contracts with customers 1,041,157 2,065 (36,337) Foreign exchange contracts with correspondent banks 13,018 45 (281) Foreign exchange contracts with customers 224 22 — Risk participation agreement 153,971 — (28) Mortgage banking derivatives 2,714 20 (15) Total $ 2,252,241 $ 37,629 $ (38,726) __________________________________ (1) The fair values of centrally-cleared derivative contracts are presented net of settled-to-market margin. December 31, 2023 Notional Fair Value (1) Other Assets Other Liabilities (Dollars in thousands) Derivatives designated as cash flow hedges Interest rate swaps $ 725,000 $ — $ — Interest rate collars 250,000 — 1,149 Forward interest rate swaps 1,000,000 10,812 — Forward interest rate collars 250,000 148 — Total $ 2,225,000 $ 10,960 $ 1,149 Derivatives not designated as hedges Interest rate contracts with correspondent banks $ 1,096,292 $ 53,185 $ 1,117 Interest rate contracts with customers 1,096,292 1,117 54,505 Foreign exchange contracts with correspondent banks 10,739 4 202 Foreign exchange contracts with customers 1,744 57 — Risk participation agreement 130,365 — 28 Mortgage banking derivatives 1,377 7 17 Total $ 2,336,809 $ 54,370 $ 55,869 __________________________________ (1) The fair values of centrally-cleared derivative contracts are presented net of settled-to-market margin.

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2024
Commitments and Contingencies Disclosure [Abstract]
Commitments	commitments described below at the dates indicated below: September 30, 2024 December 31, 2023 (Dollars in thousands) Commitments to extend credit $ 2,168,218 $ 2,274,239 Standby letters of credit 138,451 132,132 Other letters of credit 30,999 51,983 Commitments to fund affordable housing partnerships and CRA investments 17,860 21,017 The Company is a party to financial instruments with off-balance-sheet risk in the normal course of business to meet the financing needs of its 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 and other CRA investments. 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.

Goodwill, Intangible Assets, _2

Goodwill, Intangible Assets, and Servicing Assets (Tables)	9 Months Ended
	Sep. 30, 2024
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, 2024 and December 31, 2023: September 30, 2024 December 31, 2023 Core Deposit Intangibles Related To: Amortization Period Gross Accumulated Carrying Amount Accumulated Carrying Amount (Dollars in thousands) Wilshire Bancorp acquisition 10 years $ 18,138 $ (15,406) $ 2,732 $ (14,203) $ 3,935
Schedule of Servicing Assets	The changes in servicing assets for the three and nine months ended September 30, 2024 and 2023, were as follows: Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 (Dollars in thousands) Balance at beginning of period $ 8,984 $ 11,532 $ 9,631 $ 11,628 Additions through originations of servicing assets 1,090 36 1,839 1,885 Amortization (735) (1,111) (2,131) (3,056) Balance at end of period $ 9,339 $ 10,457 $ 9,339 $ 10,457
Summary of Fair Value Inputs	The inputs used in evaluating servicing assets for impairment at September 30, 2024 and December 31, 2023, are presented below. September 30, 2024 December 31, 2023 SBA Servicing Assets: Weighted-average discount rate 10.10% 11.12% Constant prepayment rate 9.53% 12.17% Mortgage Servicing Assets: Weighted-average discount rate 10.25% 11.00% Constant prepayment rate 5.95% 9.52%

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2024
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, 2024 Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs (Dollars in thousands) Assets: Investment securities AFS: U.S. Government agency and U.S. Government sponsored enterprises: Agency securities $ 3,972 $ — $ 3,972 $ — Collateralized mortgage obligations 699,852 — 699,852 — Mortgage-backed securities: Residential 416,125 — 416,125 — Commercial 446,483 — 446,483 — Asset-backed securities 134,539 — 134,539 — Corporate securities 20,533 — 20,533 — Municipal securities 199,477 — 198,619 858 Equity investments with readily determinable fair value 4,455 4,455 — — Interest rate contracts 37,542 — 37,542 — Mortgage banking derivatives 20 — 20 — Other derivatives 8,973 — 8,973 — Liabilities: Interest rate contracts 38,402 — 38,402 — Mortgage banking derivatives 15 — 15 — Other derivatives 327 — 299 28 Fair Value Measurements at the End of December 31, 2023 Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs (Dollars in thousands) Assets: Investment securities AFS: U.S. Treasury securities $ 103,677 $ 103,677 $ — $ — U.S. Government agency and U.S. Government sponsored enterprises: Agency securities 3,900 — 3,900 — Collateralized mortgage obligations 747,719 — 747,719 — Mortgage-backed securities: Residential 420,298 — 420,298 — Commercial 391,888 — 391,888 — Asset-backed securities 149,670 — 149,670 — Corporate securities 19,434 — 19,434 — Municipal securities 308,473 — 307,615 858 Equity investments with readily determinable fair value 4,363 4,363 — — Interest rate contracts 54,302 — 54,302 — Mortgage banking derivatives 7 — 7 — Other derivatives 11,021 — 11,021 — Liabilities: Interest rate contracts 55,622 — 55,622 — Mortgage banking derivatives 17 — 17 — Other derivatives 1,379 — 1,351 28
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, 2024 and 2023: Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 (Dollars in thousands) Municipal securities: Beginning Balance $ 815 $ 930 $ 858 $ 943 Change in fair value included in other comprehensive income 43 (77) — (90) Ending Balance $ 858 $ 853 $ 858 $ 853 Risk participation agreements: Beginning Balance $ 16 $ 28 $ 28 $ 32 Change in fair value included in income 12 (17) — (21) Ending Balance $ 28 $ 11 $ 28 $ 11
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, 2024 Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs (Dollars in thousands) Assets: Collateral-dependent loans receivable at fair value: CRE loans $ 33,067 $ — $ — $ 33,067 C&I loans 23,731 — — 23,731 Loans held for sale, net 23,717 — 23,717 — Fair Value Measurements at the End of December 31, 2023 Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs (Dollars in thousands) Assets: Collateral-dependent loans receivable at fair value: CRE loans $ 3,475 $ — $ — $ 3,475 C&I loans 2,701 — — 2,701 Loans held for sale, net 2,287 — 2,287 — OREO 63 — — 63 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: Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 (Dollars in thousands) Assets: Collateral-dependent loans receivable at fair value: CRE loans $ (839) $ (156) $ (942) $ (567) C&I loans (8,129) (1,768) (8,129) (2,157) Loans held for sale, net (1,552) (341) (4,406) (341) OREO — (37) — (308)
Carrying Amounts and Estimated Fair Values of Financial Instruments	Carrying amounts and estimated fair values of financial instruments, not previously presented, at September 30, 2024 and December 31, 2023, were as follows: September 30, 2024 Carrying Amount Estimated Fair Value Fair Value Measurement (Dollars in thousands) Financial Assets: Cash and cash equivalents $ 680,857 $ 680,857 Level 1 Investment securities HTM 256,320 246,231 Level 2 Equity investments without readily determinable fair values 35,453 35,453 Level 2 Loans held for sale 25,714 25,750 Level 2 Loans receivable, net 13,464,718 13,116,503 Level 3 Accrued interest receivable 51,898 51,898 Level 2/3 Servicing assets, net 9,339 18,448 Level 3 Customers’ liabilities on acceptances 667 667 Level 2 Financial Liabilities: Noninterest bearing deposits $ 3,722,985 $ 3,722,985 Level 2 Money market, interest bearing demand and savings deposits 5,013,305 5,013,305 Level 2 Time deposits 5,993,208 6,002,923 Level 2 FHLB borrowings 100,000 100,253 Level 2 Convertible notes 444 440 Level 1 Subordinated debentures 108,805 103,926 Level 3 Accrued interest payable 107,017 107,017 Level 2 Acceptances outstanding 667 667 Level 2 December 31, 2023 Carrying Amount Estimated Fair Value Fair Value Measurement (Dollars in thousands) Financial Assets: Cash and cash equivalents $ 1,928,967 $ 1,928,967 Level 1 Investment securities HTM 263,912 250,518 Level 2 Equity investments without readily determinable fair values 39,387 39,387 Level 2 Loans held for sale 3,408 3,419 Level 2 Loans receivable, net 13,694,925 13,270,444 Level 3 Accrued interest receivable 61,720 61,720 Level 2/3 Servicing assets, net 9,631 14,853 Level 3 Customers’ liabilities on acceptances 471 471 Level 2 Financial Liabilities: Noninterest bearing deposits $ 3,914,967 $ 3,914,967 Level 2 Money market, interest bearing demand and savings deposits 4,872,029 4,872,029 Level 2 Time deposits 5,966,757 5,974,125 Level 2 FHLB and FRB borrowings 1,795,726 1,795,820 Level 2 Convertible notes, net 444 451 Level 1 Subordinated debentures 107,825 99,358 Level 3 Accrued interest payable 168,174 168,174 Level 2 Acceptances outstanding 471 471 Level 2
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Valuation Techniques	The following table presents the quantitative information about the significant unobservable inputs used in the valuation of Level 3 fair value measurements that are measured on a nonrecurring basis as of September 30, 2024 and December 31, 2023: Fair Value Measurements (Level 3) Valuation Techniques Unobservable Inputs Range of Inputs Weighted-Average of Inputs ($ in thousands) September 30, 2024 Collateral dependent loans $ 41,012 Collateral Fair Value Selling cost 8.5% 8.5% 9,701 Enterprise Value Discount 19% 19% 6,085 Asset Fair Value Discount 39 % - 49% 47% December 31, 2023 Collateral dependent loans $ 4,468 Collateral Fair Value Selling cost 4.5 % - 8.5% 7.6% 1,708 Asset Fair Value Discount Rate 48% 48% OREO 63 Property Fair Value Selling cost 8.5% 8.5%

Stockholders_ Equity (Tables)

Stockholders’ Equity (Tables)	9 Months Ended
	Sep. 30, 2024
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	The following table presents the changes to accumulated other comprehensive income for the three and nine months ended September 30, 2024 and 2023: Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 (Dollars in thousands) Balance at beginning of period $ (233,130) $ (228,884) $ (204,738) $ (230,857) Unrealized net gains (losses) on investment securities AFS 69,000 (68,261) 45,885 (68,117) Unrealized net gains (losses) on interest rate contracts used for cash flow hedges 3,178 (4,310) (7,758) 3,405 Reclassification adjustments for net gains realized in net income (847) (3,720) (7,019) (8,780) Tax effect (20,980) 22,490 (9,149) 21,664 Other comprehensive income (loss), net of tax 50,351 (53,801) 21,959 (51,828) Balance at end of period $ (182,779) $ (282,685) $ (182,779) $ (282,685)

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2024
Share-Based Payment Arrangement [Abstract]
Summary of Stock Option Activity Under the Plan	The following is a summary of the stock option activity under the Company’s plans for the nine months ended September 30, 2024: Number of Shares Weighted-Average Exercise Price Per Share Weighted-Average Aggregate Intrinsic Value (Dollars in thousands) Outstanding - January 1, 2024 629,367 $ 16.61 Granted — — Exercised — — Expired (208,136) 15.75 Forfeited — — Outstanding - September 30, 2024 421,231 $ 17.04 1.88 $ — Options exercisable - September 30, 2024 421,231 $ 17.04 1.88 $ —
Summary of Restricted Stock and Performance Unit Activity Under the Plan	The following is a summary of the restricted stock and performance unit activity under the Company’s plans for the nine months ended September 30, 2024: Number of Shares Weighted-Average Grant Date Fair Value Outstanding (unvested) - January 1, 2024 2,043,621 $ 12.09 Granted 750,271 12.33 Vested (926,151) 12.60 Forfeited (128,436) 13.50 Outstanding (unvested) - September 30, 2024 1,739,305 $ 11.82

Regulatory Matters (Tables)

Regulatory Matters (Tables)	9 Months Ended
	Sep. 30, 2024
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 Ratio Required for Capital Adequacy Purposes Ratio Required To Be Well-Capitalized Ratio Required for Minimum Capital Adequacy With Capital Conservation Buffer September 30, 2024 Amount Ratio (Dollars in thousands) Common equity Tier 1 capital Company $ 1,890,666 13.07 % 4.50 % N/A 7.00 % Bank $ 1,968,612 13.62 % 4.50 % 6.50 % 7.00 % Tier 1 capital Company $ 1,995,570 13.79 % 6.00 % N/A 8.50 % Bank $ 1,968,612 13.62 % 6.00 % 8.00 % 8.50 % Total capital Company $ 2,143,477 14.82 % 8.00 % N/A 10.50 % Bank $ 2,116,519 14.64 % 8.00 % 10.00 % 10.50 % Leverage capital Company $ 1,995,570 11.61 % 4.00 % N/A N/A Bank $ 1,968,612 11.46 % 4.00 % 5.00 % N/A Actual Ratio Required for Capital Adequacy Purposes Ratio Required To Be Well-Capitalized Ratio Required for Minimum Capital Adequacy With Capital Conservation Buffer December 31, 2023 Amount Ratio (Dollars in thousands) Common equity Tier 1 capital Company $ 1,869,774 12.28 % 4.50 % N/A 7.00 % Bank $ 1,940,303 12.75 % 4.50 % 6.50 % 7.00 % Tier 1 capital Company $ 1,973,698 12.96 % 6.00 % N/A 8.50 % Bank $ 1,940,303 12.75 % 6.00 % 8.00 % 8.50 % Total capital Company $ 2,120,157 13.92 % 8.00 % N/A 10.50 % Bank $ 2,086,762 13.71 % 8.00 % 10.00 % 10.50 % Leverage capital Company $ 1,973,698 10.11 % 4.00 % N/A N/A Bank $ 1,940,303 9.94 % 4.00 % 5.00 % N/A

Revenue Recognition (Tables)

Revenue Recognition (Tables)	9 Months Ended
	Sep. 30, 2024
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, 2024 2023 2024 2023 (Dollars in thousands) Noninterest bearing deposit account income: Monthly service charges $ 240 $ 243 $ 728 $ 729 Customer analysis charges 1,460 1,292 4,409 3,677 NSF charges 844 763 2,463 2,209 Other service charges 81 93 235 273 Total noninterest bearing deposit account income 2,625 2,391 7,835 6,888 Interest bearing deposit account income: Monthly service charges 26 24 84 73 Total service fees on deposit accounts $ 2,651 $ 2,415 $ 7,919 $ 6,961 Wire transfer fee income: Wire transfer fees $ 359 $ 400 $ 1,117 $ 1,268 Foreign exchange fees 567 406 1,595 1,161 Total wire transfer and foreign currency fees $ 926 $ 806 $ 2,712 $ 2,429

Hope Bancorp, Inc. (Details)

Hope Bancorp, Inc. (Details)	Sep. 30, 2024 office branch	Apr. 29, 2024 shares	Apr. 26, 2024 $ / shares	Mar. 28, 2024 branch
Business Acquisition [Line Items]
Entity number of Branches	48
Number of loan production offices | office	9
Territorial
Business Acquisition [Line Items]
Merger agreement, fixed exchange ratio of shares | shares		0.8048
Merger agreement, share value | $ / shares			$ 8.82
PromiseOne Bank
Business Acquisition [Line Items]
Entity number of Branches				2

Basis of Presentation (Details)

Basis of Presentation (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Retained earnings	$ 1,174,100	$ 1,150,547
Deferred tax assets	122,538	$ 135,215
Cumulative Effect, Period of Adoption, Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Derecognition of delayed contribution liabilities	15,100
Retained earnings	1,100
Deferred tax assets	$ 472

Earnings Per Share (Details)

Earnings Per Share (Details)		3 Months Ended		9 Months Ended
	Jun. 07, 2018	Sep. 30, 2024 USD ($) $ / shares shares	Sep. 30, 2023 USD ($) $ / shares shares	Sep. 30, 2024 USD ($) $ / shares shares	Sep. 30, 2023 USD ($) $ / shares shares	Jun. 06, 2018 USD ($)
Antidilutive Securities Excluded from Computation of Earnings Per Share
Convertible notes, net | $		$ 444,000		$ 444,000
Net Income (Numerator)
Basic EPS - common stock | $		24,159,000	$ 30,049,000	75,293,000	$ 107,192,000
Diluted EPS - common stock | $		$ 24,159,000	$ 30,049,000	$ 75,293,000	$ 107,192,000
Weighted-Average Shares (Denominator)
Basic EPS - common stock (in shares) | shares		120,734,581	120,020,567	120,529,535	119,843,382
Effect of dilutive securities:
Stock options, restricted stock, and ESPP shares (in shares) | shares		425,396	354,051	498,258	406,570
Diluted EPS - common stock (shares) | shares		121,159,977	120,374,618	121,027,793	120,249,952
Earnings Per Share
Basic EPS - common stock (in dollars per share) | $ / shares		$ 0.20	$ 0.25	$ 0.62	$ 0.89
Diluted EPS - common stock (in dollars per share) | $ / shares		$ 0.20	$ 0.25	$ 0.62	$ 0.89
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 | shares		430,728	1,049,495	611,573	1,189,286

Equity Investments - Narrative

Equity Investments - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Net Investment Income [Line Items]
Equity investments with readily determinable fair value	$ 39,908		$ 39,908		$ 43,750
Realized gain (loss) recorded on equity investments sold	0	$ 0	0	$ 0
Equity investments without readily determinable fair values	35,500		35,500		39,387
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	4,500		4,500		4,400
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	$ 34,100		$ 34,100		$ 38,000

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, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Investments, Debt and Equity Securities [Abstract]
Net change in fair value recorded during the period on equity investments with readily determinable fair value	$ 157	$ (134)	$ 92	$ (134)
Less: Net change in fair value recorded on equity investments sold during the period	0	0	0	0
Net change in fair value on equity investments with readily determinable fair values held at the end of the period	$ 157	$ (134)	$ 92	$ (134)

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, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 2,159,944,000		$ 2,159,944,000		$ 2,429,808,000
Gross Unrealized Gains	5,201,000		5,201,000		6,199,000
Gross Unrealized Losses	(244,164,000)		(244,164,000)		(290,948,000)
Fair Value	1,920,981,000		1,920,981,000		2,145,059,000
Amortized Cost	256,320,000		256,320,000		263,912,000
Gross Unrealized Gains	18,000		18,000		0
Gross Unrealized Losses	10,107,000		10,107,000		13,394,000
Fair Value	246,231,000		246,231,000		250,518,000
Accrued interest receivable for investment securities available for sale	7,500,000		7,500,000		11,000,000
Unrealized gains on securities available for sale net of taxes	(182,779,000)		(182,779,000)		(204,738,000)
Net gain on sale of investment securities AFS	(326,000)	$ 0	99,000	$ 0
Available-for-sale Securities
Debt Securities, Available-for-sale [Line Items]
Unrealized gains on securities available for sale net of taxes	(167,900,000)		(167,900,000)		(200,200,000)
US Treasury Notes Securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	0		0		103,691,000
Gross Unrealized Gains	0		0		21,000
Gross Unrealized Losses	0		0		(35,000)
Fair Value	0		0		103,677,000
Agency Securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	4,000,000		4,000,000		4,000,000
Gross Unrealized Gains	0		0		0
Gross Unrealized Losses	(28,000)		(28,000)		(100,000)
Fair Value	3,972,000		3,972,000		3,900,000
Collateralized Mortgage Obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	818,736,000		818,736,000		888,631,000
Gross Unrealized Gains	699,000		699,000		367,000
Gross Unrealized Losses	(119,583,000)		(119,583,000)		(141,279,000)
Fair Value	699,852,000		699,852,000		747,719,000
Mortgage-backed securities: Residential
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	483,454,000		483,454,000		499,431,000
Gross Unrealized Gains	0		0		0
Gross Unrealized Losses	(67,329,000)		(67,329,000)		(79,133,000)
Fair Value	416,125,000		416,125,000		420,298,000
Amortized Cost	144,493,000		144,493,000		150,369,000
Gross Unrealized Gains	0		0		0
Gross Unrealized Losses	4,804,000		4,804,000		6,663,000
Fair Value	139,689,000		139,689,000		143,706,000
Mortgage-backed securities: Commercial
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	489,374,000		489,374,000		445,207,000
Gross Unrealized Gains	1,524,000		1,524,000		113,000
Gross Unrealized Losses	(44,415,000)		(44,415,000)		(53,432,000)
Fair Value	446,483,000		446,483,000		391,888,000
Amortized Cost	111,827,000		111,827,000		113,543,000
Gross Unrealized Gains	18,000		18,000		0
Gross Unrealized Losses	5,303,000		5,303,000		6,731,000
Fair Value	106,542,000		106,542,000		106,812,000
Asset-backed Securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	134,324,000		134,324,000		150,992,000
Gross Unrealized Gains	281,000		281,000		0
Gross Unrealized Losses	(66,000)		(66,000)		(1,322,000)
Fair Value	134,539,000		134,539,000		149,670,000
Corporate securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	23,266,000		23,266,000		23,302,000
Gross Unrealized Gains	0		0		0
Gross Unrealized Losses	(2,733,000)		(2,733,000)		(3,868,000)
Fair Value	20,533,000		20,533,000		19,434,000
Municipal securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	206,790,000		206,790,000		314,554,000
Gross Unrealized Gains	2,697,000		2,697,000		5,698,000
Gross Unrealized Losses	(10,010,000)		(10,010,000)		(11,779,000)
Fair Value	$ 199,477,000		$ 199,477,000		$ 308,473,000
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%

Investment Securities - Sales a

Investment Securities - Sales and Calls (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Debt Securities, Available-for-sale [Line Items]
Proceeds from sales and calls of investment securities AFS	$ 65,105	$ 0	$ 157,692	$ 0
Gains from sales of investment securities AFS	543	0	2,069	0
Losses from sales of investment securities AFS	(869)	0	(1,970)	0
Net (losses) gain on sales and calls of investment securities AFS	$ (326)	$ 0	$ 99	$ 0

Securities Available for Sale_2

Securities Available for Sale - Interest Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Debt Securities, Available-for-Sale [Abstract]
Taxable	$ 15,948	$ 15,884	$ 48,896	$ 44,396
Nontaxable	793	1,122	2,723	3,269
Total	$ 16,741	$ 17,006	$ 51,619	$ 47,665

Securities Available for Sale_3

Securities Available for Sale - Amortized Cost and Estimated Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Debt Securities, Available-for-Sale, Amortized Cost, Fiscal Year Maturity [Abstract]
Due within one year	$ 0
Due after one year through five years	143,758
Due after five years through ten years	140,052
Due after ten years	1,876,134
Amortized Cost	2,159,944	$ 2,429,808
Debt Securities, Available-for-Sale, Fair Value, Fiscal Year Maturity [Abstract]
Due within one year	0
Due after one year through five years	138,873
Due after five years through ten years	134,267
Due after ten years	1,647,841
Total	1,920,981	2,145,059
Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity [Abstract]
Due within one year	0
Due after one year through five years	24,930
Due after five years through ten years	8,770
Due after ten years	222,620
Total	256,320
Debt Securities, Held-to-Maturity, Fair Value, Maturity [Abstract]
Due within one year	0
Due after one year through five years	24,803
Due after five years through ten years	8,650
Due after ten years	212,778
Total	246,231
Securities, carrying value	$ 223,700	$ 1,700,000

Securities Available for Sale_4

Securities Available for Sale - Aggregate Unrealized Losses and Fair Value (Details) $ in Thousands	Sep. 30, 2024 USD ($) security	Dec. 31, 2023 USD ($) security
Number  of Securities
Less than 12 months | security	16	20
12 months or longer | security	261	301
Total | security	277	321
Fair  Value
Less than 12 months	$ 109,543	$ 115,815
12 months or longer	1,529,130	1,738,084
Total	1,638,673	1,853,899
Gross Unrealized Losses
Less than 12 months	(1,689)	(2,770)
12 months or longer	(242,475)	(288,178)
Total	$ (244,164)	$ (290,948)
Collateralized mortgage obligations
Number  of Securities
Less than 12 months | security	0	3
12 months or longer | security	95	115
Total | security	95	118
Fair  Value
Less than 12 months	$ 0	$ 19,800
12 months or longer	672,967	717,662
Total	672,967	737,462
Gross Unrealized Losses
Less than 12 months	0	(378)
12 months or longer	(119,583)	(140,901)
Total	$ (119,583)	$ (141,279)
Mortgage-backed securities: Residential
Number  of Securities
Less than 12 months | security	1	0
12 months or longer | security	64	65
Total | security	65	65
Fair  Value
Less than 12 months	$ 17,688	$ 0
12 months or longer	398,437	420,298
Total	416,125	420,298
Gross Unrealized Losses
Less than 12 months	(168)	0
12 months or longer	(67,161)	(79,133)
Total	$ (67,329)	$ (79,133)
Mortgage-backed securities: Commercial
Number  of Securities
Less than 12 months | security	5	6
12 months or longer | security	56	53
Total | security	61	59
Fair  Value
Less than 12 months	$ 33,500	$ 53,255
12 months or longer	344,770	331,450
Total	378,270	384,705
Gross Unrealized Losses
Less than 12 months	(945)	(2,129)
12 months or longer	(43,470)	(51,303)
Total	$ (44,415)	$ (53,432)
Corporate securities
Number  of Securities
Less than 12 months | security	0	0
12 months or longer | security	6	6
Total | security	6	6
Fair  Value
Less than 12 months	$ 0	$ 0
12 months or longer	20,533	19,434
Total	20,533	19,434
Gross Unrealized Losses
Less than 12 months	0	0
12 months or longer	(2,733)	(3,868)
Total	$ (2,733)	$ (3,868)
Municipal securities
Number  of Securities
Less than 12 months | security	5	11
12 months or longer | security	39	42
Total | security	44	53
Fair  Value
Less than 12 months	$ 19,347	$ 42,760
12 months or longer	88,451	91,707
Total	107,798	134,467
Gross Unrealized Losses
Less than 12 months	(510)	(263)
12 months or longer	(9,500)	(11,516)
Total	$ (10,010)	$ (11,779)
U.S. Government Agency and U.S. Government Sponsored Enterprises
Gross Unrealized Losses
Percentage of portfolio	83.70%
Asset-backed Securities
Number  of Securities
Less than 12 months | security	5	0
12 months or longer | security	0	18
Total | security	5	18
Fair  Value
Less than 12 months	$ 39,008	$ 0
12 months or longer	0	149,670
Total	39,008	149,670
Gross Unrealized Losses
Less than 12 months	(66)	0
12 months or longer	0	(1,322)
Total	$ (66)	$ (1,322)
US Treasury Notes Securities
Number  of Securities
Less than 12 months | security	0	0
12 months or longer | security	0	1
Total | security	0	1
Fair  Value
Less than 12 months	$ 0	$ 0
12 months or longer	0	3,963
Total	0	3,963
Gross Unrealized Losses
Less than 12 months	0	0
12 months or longer	0	(35)
Total	$ 0	$ (35)
Agency Securities
Number  of Securities
Less than 12 months | security	0	0
12 months or longer | security	1	1
Total | security	1	1
Fair  Value
Less than 12 months	$ 0	$ 0
12 months or longer	3,972	3,900
Total	3,972	3,900
Gross Unrealized Losses
Less than 12 months	0	0
12 months or longer	(28)	(100)
Total	$ (28)	$ (100)

Held to Maturity (Details)

Held to Maturity (Details) - USD ($)	Sep. 30, 2024	Dec. 31, 2023
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, 2024 USD ($) segment	Jun. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)	Sep. 30, 2023 USD ($)	Jun. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, net of deferred costs and fees	$ 13,617,988		$ 13,853,619
Total	(153,270)	$ (156,019)	(158,694)	$ (158,809)	$ (172,996)	$ (162,359)
Loans receivable, net of allowance for credit losses	13,464,718		13,694,925
Net deferred fees/costs	$ 1,300		6,100
Number of portfolio segments | segment	4
Increase (Decrease) in Finance Receivables	$ (235,600)
Increase (decrease) in financing receivable, percentage	(1.70%)
Loans held for sale, at lower of cost or fair value	$ 25,714		3,408
Loans held for sale, valuation allowance	1,600
Residential mortgage loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for sale, at lower of cost or fair value	2,000
Commercial Real Estate and Commercial Business Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for sale, at lower of cost or fair value	23,700
CRE loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, net of deferred costs and fees	8,630,757		8,797,884
Total	(91,328)	(95,643)	(93,940)	(96,736)	(105,321)	(95,884)
C&I loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, net of deferred costs and fees	3,901,368		4,135,044
Total	(57,041)	(56,014)	(51,291)	(49,422)	(54,894)	(56,872)
Residential mortgage loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, net of deferred costs and fees	1,047,556		883,687
Total	(4,424)	(3,909)	(12,838)	(11,996)	(11,983)	(8,920)
Consumer and other loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, net of deferred costs and fees	38,307		37,004
Total	$ (477)	$ (453)	$ (625)	$ (655)	$ (798)	$ (683)

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		12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period	$ 156,019	$ 172,996	$ 158,694	$ 162,359	$ 162,359
Provision (credit) for credit/loan losses	3,000	16,800	8,300	27,400
Loans charged off	(6,283)	(33,925)	(17,541)	(35,399)	(37,520)
Recoveries of charge offs	534	2,938	3,817	4,856
Balance, end of period	153,270	158,809	153,270	158,809	158,694
Allowance for credit losses:
Individually evaluated	8,103		8,103		2,660
Collectively evaluated	145,167		145,167		156,034
Total	153,270	158,809	153,270	158,809	158,694
Loans outstanding:
Individually evaluated	103,493		103,493		45,204
Collectively evaluated	13,514,495		13,514,495		13,808,415
Total	13,617,988		13,617,988		13,853,619
Reserve for unfunded loan commitments recorded in other liabilities	2,800		2,800		3,800
Additions to reserves for unfunded loan commitments recorded in credit related expenses	$ 280	62	$ (1,000)	1,800
Threshold period for loans to be placed on nonaccrual status			90 days
Non-modeled loans as percentage of total loan portfolio (less than)	2%		2%
Reasonable and supportable period at which point loss assumptions revert back to historical loss information			2 years
ASU 2022-02
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period			$ (407)
Balance, end of period					(407)
Allowance for credit losses:
Total					(407)
Real estate
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period	$ 95,643	105,321	93,940	95,884	95,884
Provision (credit) for credit/loan losses	(3,943)	(10,852)	(2,223)	(1,065)
Loans charged off	(390)	(631)	(948)	(1,192)	(2,947)
Recoveries of charge offs	18	2,898	559	3,090
Balance, end of period	91,328	96,736	91,328	96,736	93,940
Allowance for credit losses:
Individually evaluated	3,238		3,238		886
Collectively evaluated	88,090		88,090		93,054
Total	91,328	96,736	91,328	96,736	93,940
Loans outstanding:
Individually evaluated	72,125		72,125		33,932
Collectively evaluated	8,558,632		8,558,632		8,763,952
Total	8,630,757		8,630,757		8,797,884
Real estate | ASU 2022-02
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period			19
Balance, end of period					19
Allowance for credit losses:
Total					19
C&I loans
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period	56,014	54,894	51,291	56,872	56,872
Provision (credit) for credit/loan losses	6,314	27,713	19,009	25,226
Loans charged off	(5,767)	(33,219)	(16,358)	(33,957)	(34,203)
Recoveries of charge offs	480	34	3,099	1,707
Balance, end of period	57,041	49,422	57,041	49,422	51,291
Allowance for credit losses:
Individually evaluated	4,685		4,685		1,721
Collectively evaluated	52,356		52,356		49,570
Total	57,041	49,422	57,041	49,422	51,291
Loans outstanding:
Individually evaluated	24,963		24,963		5,013
Collectively evaluated	3,876,405		3,876,405		4,130,031
Total	3,901,368		3,901,368		4,135,044
C&I loans | ASU 2022-02
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period			(426)
Balance, end of period					(426)
Allowance for credit losses:
Total					(426)
Residential mortgage loans
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period	3,909	11,983	12,838	8,920	8,920
Provision (credit) for credit/loan losses	515	13	(8,414)	3,076
Loans charged off	0	0	0	0	0
Recoveries of charge offs	0	0	0	0
Balance, end of period	4,424	11,996	4,424	11,996	12,838
Allowance for credit losses:
Individually evaluated	163		163		39
Collectively evaluated	4,261		4,261		12,799
Total	4,424	11,996	4,424	11,996	12,838
Loans outstanding:
Individually evaluated	6,363		6,363		5,916
Collectively evaluated	1,041,193		1,041,193		877,771
Total	1,047,556		1,047,556		883,687
Residential mortgage loans | ASU 2022-02
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period			0
Balance, end of period					0
Allowance for credit losses:
Total					0
Consumer and other loans
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period	453	798	625	683	683
Provision (credit) for credit/loan losses	114	(74)	(72)	163
Loans charged off	(126)	(75)	(235)	(250)	(370)
Recoveries of charge offs	36	6	159	59
Balance, end of period	477	655	477	655	625
Allowance for credit losses:
Individually evaluated	17		17		14
Collectively evaluated	460		460		611
Total	477	$ 655	477	$ 655	625
Loans outstanding:
Individually evaluated	42		42		343
Collectively evaluated	38,265		38,265		36,661
Total	$ 38,307		38,307		37,004
Consumer and other loans | ASU 2022-02
Allowance for Loan Losses by Portfolio Segment
Balance, beginning of period			$ 0
Balance, end of period					0
Allowance for credit losses:
Total					$ 0

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, 2024	Dec. 31, 2023	Sep. 30, 2023
Financing Receivable, Nonaccrual [Line Items]
Threshold period for loans to be placed on nonaccrual status	90 days
Nonaccrual with No ACL	$ 26,568	$ 32,173
Nonaccrual with an ACL	77,034	13,031
Financing Receivable, Nonaccrual	103,602	45,204
Accruing Loans Past Due 90 Days or More	226	261
Guaranteed portion of SBA loans excluded from Nonaccrual loans	13,100	11,400
CRE loans
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No ACL	19,788		$ 26,724
Nonaccrual with an ACL	52,440		7,208
Financing Receivable, Nonaccrual	72,228	33,932
Accruing Loans Past Due 90 Days or More	0		$ 0
C&I loans
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No ACL	3,811	2,447
Nonaccrual with an ACL	21,152	2,566
Financing Receivable, Nonaccrual	24,963	5,013
Accruing Loans Past Due 90 Days or More	128	184
Residential mortgage loans
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No ACL	2,969	3,002
Nonaccrual with an ACL	3,394	2,914
Financing Receivable, Nonaccrual	6,363	5,916
Accruing Loans Past Due 90 Days or More	0	0
Consumer and other loans
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No ACL	0	0
Nonaccrual with an ACL	48	343
Financing Receivable, Nonaccrual	48	343
Accruing Loans Past Due 90 Days or More	$ 98	$ 77

Loans Receivable and Allowanc_6

Loans Receivable and Allowance for Credit Losses - Collateral-Dependent Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Jun. 30, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 153,270	$ 156,019	$ 158,694	$ 158,809	$ 172,996	$ 162,359
Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	78,289		36,960
Real Estate Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	55,857		35,252
Other Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	22,432		1,708
Real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	91,328	95,643	93,940	96,736	105,321	95,884
Real estate | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	51,505		29,803
Real estate | Real Estate Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	51,505		29,803
Real estate | Other Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0		0
C&I loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	57,041	56,014	51,291	49,422	54,894	56,872
C&I loans | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	23,815		4,155
C&I loans | Real Estate Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,383		2,447
C&I loans | Other Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	22,432		1,708
Residential mortgage loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	4,424	3,909	12,838	11,996	11,983	8,920
Residential mortgage loans | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	2,969		3,002
Residential mortgage loans | Real Estate Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	2,969		3,002
Residential mortgage loans | Other Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0		0
Consumer and other loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 477	$ 453	$ 625	$ 655	$ 798	$ 683

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, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest income reversals	$ 2,132	$ 392	$ 4,105	$ 1,975
Real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest income reversals	1,867	176	2,119	841
C&I loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest income reversals	263	216	1,976	1,102
Residential mortgage loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest income reversals	$ 2	$ 0	$ 10	$ 32

Loans Receivable and Allowanc_8

Loans Receivable and Allowance for Credit Losses - Past Due Financing Receivables (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Financing Receivable, Past Due [Line Items]
Amortized cost, past due loans	$ 13,617,988	$ 13,853,619
Total Past Due
Financing Receivable, Past Due [Line Items]
Amortized cost, past due loans	95,326	22,568
30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Amortized cost, past due loans	10,783	4,681
60-89 Days  Past Due
Financing Receivable, Past Due [Line Items]
Amortized cost, past due loans	66,502	3,557
90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Amortized cost, past due loans	18,041	14,330
Real estate
Financing Receivable, Past Due [Line Items]
Amortized cost, past due loans	8,630,757	8,797,884
Real estate | Total Past Due
Financing Receivable, Past Due [Line Items]
Amortized cost, past due loans	67,825	15,172
Real estate | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Amortized cost, past due loans	715	1,999
Real estate | 60-89 Days  Past Due
Financing Receivable, Past Due [Line Items]
Amortized cost, past due loans	60,707	2,976
Real estate | 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Amortized cost, past due loans	6,403	10,197
C&I loans
Financing Receivable, Past Due [Line Items]
Amortized cost, past due loans	3,901,368	4,135,044
C&I loans | Total Past Due
Financing Receivable, Past Due [Line Items]
Amortized cost, past due loans	21,472	3,184
C&I loans | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Amortized cost, past due loans	9,037	934
C&I loans | 60-89 Days  Past Due
Financing Receivable, Past Due [Line Items]
Amortized cost, past due loans	3,898	533
C&I loans | 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Amortized cost, past due loans	8,537	1,717
Residential mortgage loans
Financing Receivable, Past Due [Line Items]
Amortized cost, past due loans	1,047,556	883,687
Residential mortgage loans | Total Past Due
Financing Receivable, Past Due [Line Items]
Amortized cost, past due loans	5,699	3,873
Residential mortgage loans | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Amortized cost, past due loans	899	1,534
Residential mortgage loans | 60-89 Days  Past Due
Financing Receivable, Past Due [Line Items]
Amortized cost, past due loans	1,805	0
Residential mortgage loans | 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Amortized cost, past due loans	2,995	2,339
Consumer and other loans
Financing Receivable, Past Due [Line Items]
Amortized cost, past due loans	38,307	37,004
Consumer and other loans | Total Past Due
Financing Receivable, Past Due [Line Items]
Amortized cost, past due loans	330	339
Consumer and other loans | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Amortized cost, past due loans	132	214
Consumer and other loans | 60-89 Days  Past Due
Financing Receivable, Past Due [Line Items]
Amortized cost, past due loans	92	48
Consumer and other loans | 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Amortized cost, past due loans	$ 106	$ 77

Loans Receivable and Allowanc_9

Loans Receivable and Allowance for Credit Losses - Financing Receivable Credit Quality Indicators (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	$ 1,870,669,000		$ 1,870,669,000		$ 1,845,145,000
Term loan originated in year two	1,351,750,000		1,351,750,000		4,084,313,000
Term loan originated in year three	3,662,767,000		3,662,767,000		3,056,873,000
Term loan originated in year four	2,642,197,000		2,642,197,000		1,470,519,000
Term loan originated in year five	1,301,737,000		1,301,737,000		1,212,639,000
Term loan originated prior to year five	2,026,516,000		2,026,516,000		1,543,568,000
Revolving Loans	762,352,000		762,352,000		640,562,000
Total	13,617,988,000		13,617,988,000		13,853,619,000
Current period gross charge offs, Year One, Originated, Current Fiscal Year			0		5,114,000
Current period gross charge offs, Year Two, Originated, Fiscal Year before Current Fiscal Year			319,000		12,638,000
Current period gross charge offs, Year Three, Originated, Two Years before Current Fiscal Year			15,998,000		16,020,000
Current period gross charge offs, Year Four, Originated, Three Years before Current Fiscal Year			107,000		361,000
Current period gross charge offs, Year Five, Originated, Four Years before Current Fiscal Year			101,000		537,000
Current period gross charge offs, Originated, More than Five Years before Current Fiscal Year			781,000		2,480,000
Current period gross charge offs, Revolving			235,000		370,000
Allowance for credit loss, writeoff	6,283,000	$ 33,925,000	17,541,000	$ 35,399,000	37,520,000
Revolving loans converted to term loans	0		0		0
CRE loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	591,743,000		591,743,000		623,058,000
Term loan originated in year two	596,852,000		596,852,000		2,432,696,000
Term loan originated in year three	2,357,946,000		2,357,946,000		2,068,615,000
Term loan originated in year four	1,979,743,000		1,979,743,000		1,244,883,000
Term loan originated in year five	1,182,937,000		1,182,937,000		1,004,529,000
Term loan originated prior to year five	1,810,185,000		1,810,185,000		1,344,677,000
Revolving Loans	111,351,000		111,351,000		79,426,000
Total	8,630,757,000		8,630,757,000		8,797,884,000
Current period gross charge offs, Year One, Originated, Current Fiscal Year			0		103,000
Current period gross charge offs, Year Two, Originated, Fiscal Year before Current Fiscal Year			0		315,000
Current period gross charge offs, Year Three, Originated, Two Years before Current Fiscal Year			165,000		0
Current period gross charge offs, Year Four, Originated, Three Years before Current Fiscal Year			0		233,000
Current period gross charge offs, Year Five, Originated, Four Years before Current Fiscal Year			101,000		355,000
Current period gross charge offs, Originated, More than Five Years before Current Fiscal Year			682,000		1,941,000
Current period gross charge offs, Revolving			0		0
Allowance for credit loss, writeoff	390,000	631,000	948,000	1,192,000	2,947,000
C&I loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	1,050,208,000		1,050,208,000		1,124,120,000
Term loan originated in year two	668,364,000		668,364,000		1,285,421,000
Term loan originated in year three	953,068,000		953,068,000		723,689,000
Term loan originated in year four	416,419,000		416,419,000		220,376,000
Term loan originated in year five	114,479,000		114,479,000		177,719,000
Term loan originated prior to year five	68,913,000		68,913,000		63,377,000
Revolving Loans	629,917,000		629,917,000		540,342,000
Total	3,901,368,000		3,901,368,000		4,135,044,000
Current period gross charge offs, Year One, Originated, Current Fiscal Year			0		5,011,000
Current period gross charge offs, Year Two, Originated, Fiscal Year before Current Fiscal Year			319,000		12,323,000
Current period gross charge offs, Year Three, Originated, Two Years before Current Fiscal Year			15,833,000		16,020,000
Current period gross charge offs, Year Four, Originated, Three Years before Current Fiscal Year			107,000		128,000
Current period gross charge offs, Year Five, Originated, Four Years before Current Fiscal Year			0		182,000
Current period gross charge offs, Originated, More than Five Years before Current Fiscal Year			99,000		539,000
Current period gross charge offs, Revolving			0		0
Allowance for credit loss, writeoff	5,767,000	33,219,000	16,358,000	33,957,000	34,203,000
Residential mortgage loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	222,238,000		222,238,000		93,982,000
Term loan originated in year two	85,858,000		85,858,000		365,252,000
Term loan originated in year three	351,541,000		351,541,000		264,291,000
Term loan originated in year four	245,843,000		245,843,000		3,192,000
Term loan originated in year five	3,164,000		3,164,000		30,020,000
Term loan originated prior to year five	138,912,000		138,912,000		126,950,000
Revolving Loans	0		0		0
Total	1,047,556,000		1,047,556,000		883,687,000
Current period gross charge offs, Year One, Originated, Current Fiscal Year			0		0
Current period gross charge offs, Year Two, Originated, Fiscal Year before Current Fiscal Year			0		0
Current period gross charge offs, Year Three, Originated, Two Years before Current Fiscal Year			0		0
Current period gross charge offs, Year Four, Originated, Three Years before Current Fiscal Year			0		0
Current period gross charge offs, Year Five, Originated, Four Years before Current Fiscal Year			0		0
Current period gross charge offs, Originated, More than Five Years before Current Fiscal Year			0		0
Current period gross charge offs, Revolving			0		0
Allowance for credit loss, writeoff	0	0	0	0	0
Consumer and other loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	6,480,000		6,480,000		3,985,000
Term loan originated in year two	676,000		676,000		944,000
Term loan originated in year three	212,000		212,000		278,000
Term loan originated in year four	192,000		192,000		2,068,000
Term loan originated in year five	1,157,000		1,157,000		371,000
Term loan originated prior to year five	8,506,000		8,506,000		8,564,000
Revolving Loans	21,084,000		21,084,000		20,794,000
Total	38,307,000		38,307,000		37,004,000
Current period gross charge offs, Year One, Originated, Current Fiscal Year			0		0
Current period gross charge offs, Year Two, Originated, Fiscal Year before Current Fiscal Year			0		0
Current period gross charge offs, Year Three, Originated, Two Years before Current Fiscal Year			0		0
Current period gross charge offs, Year Four, Originated, Three Years before Current Fiscal Year			0		0
Current period gross charge offs, Year Five, Originated, Four Years before Current Fiscal Year			0		0
Current period gross charge offs, Originated, More than Five Years before Current Fiscal Year			0		0
Current period gross charge offs, Revolving			235,000		370,000
Allowance for credit loss, writeoff	126,000	$ 75,000	235,000	$ 250,000	370,000
Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	1,860,756,000		1,860,756,000		1,828,244,000
Term loan originated in year two	1,287,103,000		1,287,103,000		4,004,137,000
Term loan originated in year three	3,558,866,000		3,558,866,000		2,993,939,000
Term loan originated in year four	2,532,486,000		2,532,486,000		1,446,220,000
Term loan originated in year five	1,264,925,000		1,264,925,000		1,188,732,000
Term loan originated prior to year five	1,948,778,000		1,948,778,000		1,490,420,000
Revolving Loans	659,348,000		659,348,000		579,486,000
Total	13,112,262,000		13,112,262,000		13,531,178,000
Pass | CRE loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	591,743,000		591,743,000		623,058,000
Term loan originated in year two	580,884,000		580,884,000		2,429,146,000
Term loan originated in year three	2,352,878,000		2,352,878,000		2,045,863,000
Term loan originated in year four	1,925,051,000		1,925,051,000		1,239,654,000
Term loan originated in year five	1,148,074,000		1,148,074,000		996,483,000
Term loan originated prior to year five	1,752,263,000		1,752,263,000		1,297,295,000
Revolving Loans	110,552,000		110,552,000		79,426,000
Total	8,461,445,000		8,461,445,000		8,710,925,000
Pass | C&I loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	1,040,295,000		1,040,295,000		1,107,219,000
Term loan originated in year two	619,685,000		619,685,000		1,208,795,000
Term loan originated in year three	854,235,000		854,235,000		683,821,000
Term loan originated in year four	362,372,000		362,372,000		203,142,000
Term loan originated in year five	114,366,000		114,366,000		162,815,000
Term loan originated prior to year five	52,954,000		52,954,000		61,019,000
Revolving Loans	527,712,000		527,712,000		479,266,000
Total	3,571,619,000		3,571,619,000		3,906,077,000
Pass | Residential mortgage loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	222,238,000		222,238,000		93,982,000
Term loan originated in year two	85,858,000		85,858,000		365,252,000
Term loan originated in year three	351,541,000		351,541,000		263,977,000
Term loan originated in year four	244,871,000		244,871,000		1,356,000
Term loan originated in year five	1,328,000		1,328,000		29,063,000
Term loan originated prior to year five	135,103,000		135,103,000		123,885,000
Revolving Loans	0		0		0
Total	1,040,939,000		1,040,939,000		877,515,000
Pass | Consumer and other loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	6,480,000		6,480,000		3,985,000
Term loan originated in year two	676,000		676,000		944,000
Term loan originated in year three	212,000		212,000		278,000
Term loan originated in year four	192,000		192,000		2,068,000
Term loan originated in year five	1,157,000		1,157,000		371,000
Term loan originated prior to year five	8,458,000		8,458,000		8,221,000
Revolving Loans	21,084,000		21,084,000		20,794,000
Total	38,259,000		38,259,000		36,661,000
Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	0		0		9,743,000
Term loan originated in year two	47,970,000		47,970,000		25,414,000
Term loan originated in year three	21,565,000		21,565,000		46,840,000
Term loan originated in year four	40,177,000		40,177,000		11,115,000
Term loan originated in year five	0		0		20,577,000
Term loan originated prior to year five	28,651,000		28,651,000		5,196,000
Revolving Loans	46,080,000		46,080,000		60,107,000
Total	184,443,000		184,443,000		178,992,000
Special mention | CRE loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	0		0		0
Term loan originated in year two	14,998,000		14,998,000		2,001,000
Term loan originated in year three	2,651,000		2,651,000		15,452,000
Term loan originated in year four	5,105,000		5,105,000		2,518,000
Term loan originated in year five	0		0		5,963,000
Term loan originated prior to year five	13,677,000		13,677,000		5,196,000
Revolving Loans	799,000		799,000		0
Total	37,230,000		37,230,000		31,130,000
Special mention | C&I loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	0		0		9,743,000
Term loan originated in year two	32,972,000		32,972,000		23,413,000
Term loan originated in year three	18,914,000		18,914,000		31,388,000
Term loan originated in year four	35,072,000		35,072,000		8,597,000
Term loan originated in year five	0		0		14,614,000
Term loan originated prior to year five	14,974,000		14,974,000		0
Revolving Loans	45,281,000		45,281,000		60,107,000
Total	147,213,000		147,213,000		147,862,000
Special mention | Residential mortgage loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	0		0		0
Term loan originated in year two	0		0		0
Term loan originated in year three	0		0		0
Term loan originated in year four	0		0		0
Term loan originated in year five	0		0		0
Term loan originated prior to year five	0		0		0
Revolving Loans	0		0		0
Total	0		0		0
Special mention | Consumer and other loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	0		0		0
Term loan originated in year two	0		0		0
Term loan originated in year three	0		0		0
Term loan originated in year four	0		0		0
Term loan originated in year five	0		0		0
Term loan originated prior to year five	0		0		0
Revolving Loans	0		0		0
Total	0		0		0
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	3,510,000		3,510,000		7,158,000
Term loan originated in year two	16,677,000		16,677,000		54,762,000
Term loan originated in year three	82,336,000		82,336,000		16,094,000
Term loan originated in year four	69,534,000		69,534,000		13,184,000
Term loan originated in year five	36,812,000		36,812,000		3,330,000
Term loan originated prior to year five	49,087,000		49,087,000		47,952,000
Revolving Loans	56,924,000		56,924,000		969,000
Total	314,880,000		314,880,000		143,449,000
Substandard | CRE loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	0		0		0
Term loan originated in year two	970,000		970,000		1,549,000
Term loan originated in year three	2,417,000		2,417,000		7,300,000
Term loan originated in year four	49,587,000		49,587,000		2,711,000
Term loan originated in year five	34,863,000		34,863,000		2,083,000
Term loan originated prior to year five	44,245,000		44,245,000		42,186,000
Revolving Loans	0		0		0
Total	132,082,000		132,082,000		55,829,000
Substandard | C&I loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	3,510,000		3,510,000		7,158,000
Term loan originated in year two	15,707,000		15,707,000		53,213,000
Term loan originated in year three	79,919,000		79,919,000		8,480,000
Term loan originated in year four	18,975,000		18,975,000		8,637,000
Term loan originated in year five	113,000		113,000		290,000
Term loan originated prior to year five	985,000		985,000		2,358,000
Revolving Loans	56,924,000		56,924,000		969,000
Total	176,133,000		176,133,000		81,105,000
Substandard | Residential mortgage loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	0		0		0
Term loan originated in year two	0		0		0
Term loan originated in year three	0		0		314,000
Term loan originated in year four	972,000		972,000		1,836,000
Term loan originated in year five	1,836,000		1,836,000		957,000
Term loan originated prior to year five	3,809,000		3,809,000		3,065,000
Revolving Loans	0		0		0
Total	6,617,000		6,617,000		6,172,000
Substandard | Consumer and other loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	0		0		0
Term loan originated in year two	0		0		0
Term loan originated in year three	0		0		0
Term loan originated in year four	0		0		0
Term loan originated in year five	0		0		0
Term loan originated prior to year five	48,000		48,000		343,000
Revolving Loans	0		0		0
Total	48,000		48,000		$ 343,000
Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	6,403,000		6,403,000
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	6,403,000		6,403,000
Doubtful | C&I loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	6,403,000		6,403,000
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	$ 6,403,000		$ 6,403,000

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, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Transfer of loans held for investment to held for sale	$ 30,800	$ 145,027	$ 140,994	$ 382,286
CRE loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Transfer of loans held for investment to held for sale	17,110	30,302	70,861	97,078
C&I loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Transfer of loans held for investment to held for sale	$ 13,690	$ 114,725	$ 70,133	$ 285,208

Loans Receivable and Allowan_11

Loans Receivable and Allowance for Credit Losses - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023	Jan. 01, 2023
Financing Receivable, Allowance for Credit Loss [Line Items]
Reasonable and supportable period at which point loss assumptions revert back to historical loss information			2 years
Reversion period			1 year
Non-modeled loans as percentage of total loan portfolio (less than)	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		$ 1,000
Retained earnings	1,174,100		1,174,100		$ 1,150,547
Accrued interest receivable on loans	43,100		43,100		49,300
Loans held for sale, at lower of cost or fair value	25,714		25,714		$ 3,408
Provision for Loan, Lease, and Other Losses	3,280	$ 16,862	7,280	$ 29,192
Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Line Items]
Retained earnings	1,100		1,100
Cumulative Effect, Period of Adoption, Adjustment | ASU 2022-02
Financing Receivable, Allowance for Credit Loss [Line Items]
Retained earnings						$ 287
Commercial Real Estate and Commercial Business Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans held for sale, at lower of cost or fair value	23,700		23,700
Residential mortgage loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans held for sale, at lower of cost or fair value	$ 2,000		$ 2,000

Loans Receivable and Allowan_12

Loans Receivable and Allowance for Credit Losses - Loan Modifications (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Loan Modifications	$ 26,745	$ 3,418	$ 43,295	$ 26,568
% of Loan Class	0.20%	0.02%	0.32%	0.19%
Loan modifications with payment defaults, modified in 12 months prior to default	$ 0	$ 0	$ 0	$ 0
Principal forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Loan Modifications	0	0	9,701	0
Interest rate reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Loan Modifications	0	0	0	0
Payment delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Loan Modifications	0	0	0	0
Term extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Loan Modifications	26,745	3,418	33,594	26,568
CRE loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Loan Modifications	$ 13	$ 1,119	$ 13	$ 1,119
% of Loan Class	0%	0.01%	0%	0.01%
CRE loans | Principal forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Loan Modifications	$ 0	$ 0	$ 0	$ 0
Extended term	3 months 18 days	3 months 18 days	3 months 18 days	3 months 18 days
CRE loans | Interest rate reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Loan Modifications	$ 0	$ 0	$ 0	$ 0
CRE loans | Payment delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Loan Modifications	0	0	0	0
CRE loans | Term extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Loan Modifications	13	1,119	13	1,119
C&I loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Loan Modifications	$ 26,732	$ 2,299	$ 43,282	$ 25,449
% of Loan Class	0.69%	0.05%	1.11%	0.57%
C&I loans | Principal forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Loan Modifications	$ 0	$ 0	$ 9,701	$ 0
Extended term	3 months 18 days	3 months 18 days	3 months 18 days	3 months 18 days
C&I loans | Interest rate reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Loan Modifications	$ 0	$ 0	$ 0	$ 0
C&I loans | Payment delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Loan Modifications	0	0	0	0
C&I loans | Term extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Loan Modifications	26,732	2,299	33,581	25,449
Residential mortgage loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Loan Modifications	$ 0	$ 0	$ 0	$ 0
% of Loan Class	0%	0%	0%	0%
Residential mortgage loans | Principal forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Loan Modifications	$ 0	$ 0	$ 0	$ 0
Residential mortgage loans | Interest rate reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Loan Modifications	0	0	0	0
Residential mortgage loans | Payment delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Loan Modifications	0	0	0	0
Residential mortgage loans | Term extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Loan Modifications	0	0	0	0
Consumer and other loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Loan Modifications	$ 0	$ 0	$ 0	$ 0
% of Loan Class	0%	0%	0%	0%
Consumer and other loans | Principal forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Loan Modifications	$ 0	$ 0	$ 0	$ 0
Consumer and other loans | Interest rate reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Loan Modifications	0	0	0	0
Consumer and other loans | Payment delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Loan Modifications	0	0	0	0
Consumer and other loans | Term extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Loan Modifications	$ 0	$ 0	$ 0	$ 0

Loans Receivable and Allowan_13

Loans Receivable and Allowance for Credit Losses - Principal Forgiveness (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications with payment defaults, modified in 12 months prior to default	$ 0	$ 0	$ 0	$ 0
C&I loans | Principal forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Forgiveness of principal	$ 0		$ 4.4
Extended term	3 months 18 days	3 months 18 days	3 months 18 days	3 months 18 days
CRE loans | Principal forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Extended term	3 months 18 days	3 months 18 days	3 months 18 days	3 months 18 days

Leases - Additional Information

Leases - Additional Information (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($) lease	Sep. 30, 2023 USD ($) branch	Oct. 01, 2024 branch	Dec. 31, 2023 USD ($)
Lessee, Lease, Description [Line Items]
Extension options, term of extension			5 years
Rent expense	$ 4,300,000	$ 4,500,000	$ 12,700,000	$ 13,600,000
Operating Lease, Impairment Loss	0		$ 0	$ (93,000)
Number of branches consolidated | branch				1
Number of operating lease commitments not yet commenced | lease			0
Short-term operating lease liability	14,053,000		$ 14,053,000			$ 14,287,000
Long-term operating lease liability	$ 32,962,000		$ 32,962,000			$ 38,383,000
Subsequent Event
Lessee, Lease, Description [Line Items]
Number of branches sold | branch					2
Minimum
Lessee, Lease, Description [Line Items]
Remaining lease term for operating leases	1 year		1 year
Extension options, term of extension			3 years
Maximum
Lessee, Lease, Description [Line Items]
Remaining lease term for operating leases	9 years		9 years
Extension options, term of extension			7 years

Leases - Net Lease Cost (Detail

Leases - Net Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Leases [Abstract]
Operating lease cost	$ 3,632	$ 3,852	$ 10,849	$ 11,518
Variable lease cost	1,004	946	2,679	2,549
Sublease income	(70)	(29)	(173)	(121)
Net lease cost	$ 4,566	$ 4,769	$ 13,355	$ 13,946

Leases - Other Information (Det

Leases - Other Information (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2024 USD ($)	Sep. 30, 2024 USD ($) lease	Sep. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash outflows for operating leases		$ 11,795	$ 11,968
ROU assets obtained in exchange for lease liabilities, net		$ 5,490	$ 7,606
Weighted-average remaining lease term - operating leases	3 years 8 months 12 days	3 years 8 months 12 days	4 years 2 months 12 days
Weighted-average discount rate - operating leases	3.07%	3.07%	2.75%
Number of operating lease commitments not yet commenced | lease		0
Number of leases extended | lease		7
Number of new leases | lease		0
Long-term operating lease liability	$ 32,962	$ 32,962		$ 38,383
Operating Lease, Impairment Loss	$ 0	$ 0	$ (93)

Leases - Maturities of Remainin

Leases - Maturities of Remaining Lease Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Leases [Abstract]
2024	$ 3,948
2025	14,981
2026	14,338
2027	8,834
2028	4,052
2029 and thereafter	3,862
Total lease payments	50,015
Less: imputed interest	3,000
Total lease obligations	$ 47,015	$ 52,670

Deposits (Details)

Deposits (Details) - USD ($)	9 Months Ended
	Sep. 30, 2024	Oct. 01, 2024	Dec. 31, 2023
Deposits Disclosure [Line Items]
Time Deposits, $250,000 or More	$ 2,680,000,000		$ 2,240,000,000
Brokered deposits	1,010,000,000		1,540,000,000
Noninterest bearing	3,722,985,000		3,914,967,000
Money market and NOW accounts	4,289,042,000		4,169,543,000
Savings deposits	724,263,000		702,486,000
Time deposits	5,993,208,000		5,966,757,000
Total deposits	$ 14,729,498,000		$ 14,753,753,000
Percent of total deposit balance, by type	100%		100%
Deposit Liabilities Reclassified as Loans Receivable	$ 2,700,000		$ 2,000,000
Increase (decrease) in deposit liabilities	$ (24,300,000)
Increase (decrease) in deposit liabilities, percentage	(0.20%)
Subsequent Event
Deposits Disclosure [Line Items]
Deposits transferred upon sale of branch locations		$ 128,100,000
Money market and NOW accounts
Deposits Disclosure [Line Items]
Brokered deposits	$ 278,300,000		$ 164,100,000
Percent of total deposit balance, by type	29%		28%
Time deposit accounts
Deposits Disclosure [Line Items]
Brokered deposits	$ 733,700,000		$ 1,370,000,000
Noninterest Bearing Demand Deposits
Deposits Disclosure [Line Items]
Percent of total deposit balance, by type	25%		27%
Savings Deposits
Deposits Disclosure [Line Items]
Percent of total deposit balance, by type	5%		5%
Bank Time Deposits
Deposits Disclosure [Line Items]
Percent of total deposit balance, by type	41%		40%
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	$ 214,700,000		$ 218,700,000
California State Treasurer | Letter of credit
Deposits Disclosure [Line Items]
Letter of credit pledged as collateral	$ 150,000,000

Borrowings - Maturities of FHLB

Borrowings - Maturities of FHLB Borrowings (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Short-Term Debt [Line Items]
Total Borrowing Capacity	$ 4,965,071	$ 6,817,761
Amount	$ 100,000	$ 1,795,726
Weighted Average Rate	5.59%	4.54%
Available Borrowing Capacity	$ 4,865,071	$ 5,022,035
FRB
Short-Term Debt [Line Items]
Total Borrowing Capacity		4,167,168
Amount		$ 100,000
Weighted Average Rate		5.73%
Available Borrowing Capacity		$ 4,067,168
FRB Discount Window
Short-Term Debt [Line Items]
Total Borrowing Capacity	507,949	630,369
Amount	$ 0	$ 0
Weighted Average Rate	0%	0%
Available Borrowing Capacity	$ 507,949	$ 630,369
FRB Bank Term Funding Program (“BTFP”)
Short-Term Debt [Line Items]
Total Borrowing Capacity		1,707,909
Amount		$ 1,695,726
Weighted Average Rate		4.47%
Available Borrowing Capacity		$ 12,183
Unsecured Federal Funds lines
Short-Term Debt [Line Items]
Total Borrowing Capacity	302,391	312,315
Amount	$ 0	$ 0
Weighted Average Rate	0%	0%
Available Borrowing Capacity	$ 302,391	$ 312,315
Federal Home Loan Bank Certificates and Obligations (FHLB)
Short-Term Debt [Line Items]
Total Borrowing Capacity	4,154,731
Amount	$ 100,000
Weighted Average Rate	5.59%
Available Borrowing Capacity	$ 4,054,731

Borrowings - Narrative (Details

Borrowings - Narrative (Details) $ in Thousands	Sep. 30, 2024 USD ($) security	Dec. 31, 2023 USD ($)
Debt Instrument [Line Items]
FHLB and FRB borrowings	$ 100,000	$ 1,795,726
Percent of assets	25%
Percent outstanding advances	100%
Unsecured Federal Funds lines
Debt Instrument [Line Items]
FHLB and FRB borrowings	$ 0	0
Qualifying Loans
Debt Instrument [Line Items]
Asset balance used to determine maximum borrowing capacity from federal reserve bank	$ 573,800
FRB Discount Window
Debt Instrument [Line Items]
Percent of qualifying assets (up to)	99%
Number of securities pledged as collateral | security	0
Mortgage Loans on Real Estate
Debt Instrument [Line Items]
Pledged as collateral, FHLB	$ 7,730,000	$ 7,600,000

Subordinated Debentures and C_3

Subordinated Debentures and Convertible Notes - Narrative (Details)			3 Months Ended		9 Months Ended		12 Months Ended
	May 15, 2023 USD ($)	Jun. 07, 2018 $ / shares	Sep. 30, 2024 USD ($) grantorTrust	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($) grantorTrust	Sep. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)	Jun. 06, 2018 USD ($)
Subordinated Borrowing [Line Items]
Repayment of convertible notes	$ 197,100,000				$ 0	$ 197,107,000
Repayment of Convertible Debt, Principal							$ 19,900,000
Gain on debt extinguishment							405,000
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
Other assets
Subordinated Borrowing [Line Items]
Investment in common trust securities			3,900,000		$ 3,900,000		3,900,000
Carrying Value of Subordinated Debentures
Subordinated Borrowing [Line Items]
Carrying value of Debentures			108,805,000		108,805,000		107,800,000
Remaining discounts on acquired Debentures			21,100,000		21,100,000		22,100,000
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%
Long-term Debt			444,000		$ 444,000		$ 444,000
Interest expense on convertible notes			$ 2,000	$ 2,000	$ 6,000	$ 1,900,000

Subordinated Debentures and C_4

Subordinated Debentures and Convertible Notes - Summary of Trust Preferred Securities and Debentures (Details) - USD ($)	Sep. 30, 2024	Dec. 31, 2023
Subordinated Borrowing [Line Items]
Trust Preferred Security Amount	$ 126,000,000
Trust Preferred Security Amount
Subordinated Borrowing [Line Items]
Trust Preferred Security Amount	126,000,000
Carrying Value of Subordinated Debentures
Subordinated Borrowing [Line Items]
Carrying Value of Subordinated Debentures	$ 108,805,000	$ 107,800,000
Nara Capital Trust III
Subordinated Borrowing [Line Items]
Current Rate	8.36%
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 Subordinated Debentures
Subordinated Borrowing [Line Items]
Carrying Value of Subordinated Debentures	$ 5,155,000
Nara Statutory Trust IV
Subordinated Borrowing [Line Items]
Current Rate	8.41%
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 Subordinated Debentures
Subordinated Borrowing [Line Items]
Carrying Value of Subordinated Debentures	$ 5,155,000
Nara Statutory Trust V
Subordinated Borrowing [Line Items]
Current Rate	8.15%
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 Subordinated Debentures
Subordinated Borrowing [Line Items]
Carrying Value of Subordinated Debentures	$ 10,310,000
Nara Statutory Trust VI
Subordinated Borrowing [Line Items]
Current Rate	6.86%
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 Subordinated Debentures
Subordinated Borrowing [Line Items]
Carrying Value of Subordinated Debentures	$ 8,248,000
Center Capital Trust I
Subordinated Borrowing [Line Items]
Current Rate	8.41%
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 Subordinated Debentures
Subordinated Borrowing [Line Items]
Carrying Value of Subordinated Debentures	$ 15,402,000
Wilshire Trust II
Subordinated Borrowing [Line Items]
Current Rate	6.99%
Wilshire Trust II | Trust Preferred Security Amount
Subordinated Borrowing [Line Items]
Trust Preferred Security Amount	$ 20,000,000
Wilshire Trust II | Carrying Value of Subordinated Debentures
Subordinated Borrowing [Line Items]
Carrying Value of Subordinated Debentures	$ 16,872,000
Wilshire Trust III
Subordinated Borrowing [Line Items]
Current Rate	6.61%
Wilshire Trust III | Trust Preferred Security Amount
Subordinated Borrowing [Line Items]
Trust Preferred Security Amount	$ 15,000,000
Wilshire Trust III | Carrying Value of Subordinated Debentures
Subordinated Borrowing [Line Items]
Carrying Value of Subordinated Debentures	$ 12,093,000
Wilshire Trust IV
Subordinated Borrowing [Line Items]
Current Rate	6.59%
Wilshire Trust IV | Trust Preferred Security Amount
Subordinated Borrowing [Line Items]
Trust Preferred Security Amount	$ 25,000,000
Wilshire Trust IV | Carrying Value of Subordinated Debentures
Subordinated Borrowing [Line Items]
Carrying Value of Subordinated Debentures	$ 19,488,000
Saehan Capital Trust I
Subordinated Borrowing [Line Items]
Current Rate	6.49%
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 Subordinated Debentures
Subordinated Borrowing [Line Items]
Carrying Value of Subordinated Debentures	$ 16,082,000

Derivative Financial Instrume_3

Derivative Financial Instruments - Summary of Derivative Notional Amounts and Fair Values (Details) - USD ($)	Sep. 30, 2024	Dec. 31, 2023
Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	$ 2,252,241,000	$ 2,336,809,000
Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	1,825,000,000	2,225,000,000
Interest rate contracts | Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	1,125,000,000	725,000,000
Interest rate contracts | Correspondent Banks | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	1,041,157,000	1,096,292,000
Interest rate contracts | Customers | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	1,041,157,000	1,096,292,000
Interest rate swap, forward starting | Cash Flow Hedge | Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	200,000,000	1,000,000,000
Interest rate swap, forward starting | Interest Rate Cap | Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount		250,000,000
Foreign Exchange Contract | Correspondent Banks | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	13,018,000	10,739,000
Foreign Exchange Contract | Customers | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	224,000	1,744,000
Risk participation agreement | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	153,971,000	130,365,000
Interest Rate Lock Commitments and Forward Contracts | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	2,714,000	1,377,000
Interest Rate Cap | Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	500,000,000	250,000,000
Other assets | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Credit valuation adjustment, Other Assets	37,629,000
Credit valuation adjustment, Other Liabilities		(54,370,000)
Other assets | Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Interest rate derivatives	8,906,000	10,960,000
Other assets | Interest rate contracts | Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Interest rate derivatives	4,899,000	0
Other assets | Interest rate contracts | Correspondent Banks | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Interest rate derivatives	35,477,000	53,185,000
Other assets | Interest rate contracts | Customers | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Interest rate derivatives	2,065,000	1,117,000
Other assets | Interest rate swap, forward starting | Cash Flow Hedge | Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Interest rate derivatives	3,546,000	10,812,000
Other assets | Interest rate swap, forward starting | Interest Rate Cap | Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Interest rate derivatives		148,000
Other assets | Foreign Exchange Contract | Correspondent Banks | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Foreign exchange contracts	45,000	4,000
Other assets | Foreign Exchange Contract | Customers | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Foreign exchange contracts	22,000	57,000
Other assets | Risk participation agreement | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Credit valuation adjustment, Other Assets	0
Credit valuation adjustment, Other Liabilities		0
Other assets | Interest Rate Lock Commitments and Forward Contracts | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Credit valuation adjustment, Other Assets	20,000
Credit valuation adjustment, Other Liabilities		(7,000)
Other assets | Interest Rate Cap | Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Interest rate derivatives	461,000	0
Other liabilities | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Credit valuation adjustment, Other Liabilities	(38,726,000)	(55,869,000)
Other liabilities | Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Interest rate derivatives	(18,000)	1,149,000
Other liabilities | Interest rate contracts | Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Interest rate derivatives	0	0
Other liabilities | Interest rate contracts | Correspondent Banks | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Interest rate derivatives	(2,065,000)	1,117,000
Other liabilities | Interest rate contracts | Customers | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Interest rate derivatives	(36,337,000)	54,505,000
Other liabilities | Interest rate swap, forward starting | Cash Flow Hedge | Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Interest rate derivatives	0	0
Other liabilities | Interest rate swap, forward starting | Interest Rate Cap | Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Interest rate derivatives		0
Other liabilities | Foreign Exchange Contract | Correspondent Banks | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Foreign exchange contracts	(281,000)	202,000
Other liabilities | Foreign Exchange Contract | Customers | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Foreign exchange contracts	0	0
Other liabilities | Risk participation agreement | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Credit valuation adjustment, Other Liabilities	(28,000)	(28,000)
Other liabilities | Interest Rate Lock Commitments and Forward Contracts | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Credit valuation adjustment, Other Liabilities	(15,000)	(17,000)
Other liabilities | Interest Rate Cap | Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Interest rate derivatives	$ (18,000)	$ 1,149,000

Derivative Financial Instrume_4

Derivative Financial Instruments - Narrative (Details) - USD ($)		3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, notional value, terminated				$ 400,000,000
Unamortized fee on terminated derivative swaps	$ 6,400,000	$ 6,400,000		6,400,000
Derivative, Instrument, Terminated, AOCI, Unamortized Fair Value, Weighted Average Duration	2 years 9 months 18 days
Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	$ 2,252,241,000	2,252,241,000		2,252,241,000		$ 2,336,809,000
Not Designated as Hedging Instrument | Other liabilities
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Credit valuation adjustment	38,726,000	38,726,000		38,726,000		55,869,000
Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	1,825,000,000	1,825,000,000		1,825,000,000		2,225,000,000
Interest Rate Cash Flow Hedge Gain Loss To Be Reclassified To Interest Income During Next 12 Months	3,400,000	3,400,000		3,400,000
AOCI to be reclassified from terminated swaps within 12 Months				2,300,000
Risk participation agreement | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	153,971,000	153,971,000		153,971,000		130,365,000
Risk participation agreement | Not Designated as Hedging Instrument | Other liabilities
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Credit valuation adjustment	28,000	28,000		28,000		28,000
Interest rate contracts | Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	1,125,000,000	1,125,000,000		1,125,000,000		725,000,000
Interest rate swap, forward starting | Designated as Hedging Instrument | Cash Flow Hedge
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	200,000,000	200,000,000		200,000,000		1,000,000,000
Interest rate swap, forward starting | Designated as Hedging Instrument | Interest Rate Cap
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount						250,000,000
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		(706,000)	$ 96,000	(72,000)	$ 105,000
Cash Flow Hedge
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Not Offset	$ 0	$ 0		$ 0		$ 22,900,000

Derivative Financial Instrume_5

Derivative Financial Instruments - Summary of Derivative Assets and Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Derivative [Line Items]
Interest rate cash flow hedge, gain (loss) reclassified to earnings, net	$ 1,993	$ 4,692	$ 9,565	$ 11,592
Interest income and fees on loans
Derivative [Line Items]
Interest rate cash flow hedge, gain (loss) reclassified to earnings, net	(2,724)	0	(4,710)	0
Interest expense on deposits
Derivative [Line Items]
Interest rate cash flow hedge, gain (loss) reclassified to earnings, net	3,346	3,408	10,086	8,068
Interest expense on FHLB and FRB borrowings
Derivative [Line Items]
Interest rate cash flow hedge, gain (loss) reclassified to earnings, net	$ 1,371	$ 1,284	$ 4,189	$ 3,524

Commitments and Contingencies_2

Commitments and Contingencies (Details) - USD ($)	Sep. 30, 2024	Dec. 31, 2023
Supply Commitment [Line Items]
Loss contingencies for all legal claims	$ 614,000	$ 535,000
Loss contingencies for all legal claims	614,000	535,000
Commitments to extend credit
Supply Commitment [Line Items]
Commitments and letters of credit	2,168,218,000	2,274,239,000
Standby letters of credit
Supply Commitment [Line Items]
Commitments and letters of credit	138,451,000	132,132,000
Other letters of credit
Supply Commitment [Line Items]
Commitments and letters of credit	30,999,000	51,983,000
Commitments to fund affordable housing partnerships and CRA investments
Supply Commitment [Line Items]
Commitments and letters of credit	$ 17,860,000	$ 21,017,000

Goodwill, Intangible Assets, _3

Goodwill, Intangible Assets, and Servicing Assets - Intangible Assets (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
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	$ 401,000	$ 448,000	$ 1,200,000	$ 1,300,000
Wilshire Bancorp acquisition | Core Deposits
Finite-Lived Intangible Assets [Line Items]
Amortization Period	10 years		10 years
Gross Amount	$ 18,138,000		$ 18,138,000		18,138,000
Accumulated Amortization	(15,406,000)		(15,406,000)		(14,203,000)
Carrying Amount	$ 2,732,000		$ 2,732,000		$ 3,935,000

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, 2024	Sep. 30, 2023	Jun. 30, 2024	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Servicing Asset at Amortized Cost, Balance [Roll Forward]
Balance at beginning of period	$ 8,984	$ 11,532	$ 9,631	$ 9,631	$ 11,628
Additions through originations of servicing assets	1,090	36		1,839	1,885
Amortization	(735)	(1,111)		(2,131)	(3,056)
Balance at end of period	9,339	$ 10,457	$ 8,984	9,339	$ 10,457
SBA servicing assets	7,700			7,700		$ 7,600
Mortgage related servicing assets	1,600			1,600		2,100
Principal balances of loans serviced for other institutions	$ 969,400			$ 969,400		$ 987,400
SBA Servicing Assets: Weighted-average discount rate			11.12%	10.10%
SBA Servicing Assets: Constant prepayment rate			12.17%	9.53%
Mortgage Servicing Assets: Weighted-average discount rate			11%	10.25%
Mortgage Servicing Assets: Constant prepayment rate			9.52%	5.95%

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Income Tax Disclosure [Abstract]
Income tax provision	$ 7,941	$ 9,961	$ 27,245	$ 37,090
Pretax income	$ 32,100	$ 40,010	$ 102,538	$ 144,282
Effective income tax rate	24.74%	24.90%	26.57%	25.71%
Unrecognized tax benefits	$ 807		$ 807		$ 469
Decrease in unrecognized tax benefits is reasonably possible	$ 269		$ 269

Fair Value Measurements - Asset

Fair Value Measurements - Assets and Liabilities Measured at Fair Value, Recurring (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)
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	$ 39,908	$ 43,750
Recurring basis
Assets:
Equity investments with readily determinable fair value	4,455	4,363
Recurring basis | Designated as Hedging Instrument
Liabilities:
Derivative liabilities	327	1,379
Recurring basis | Interest rate contracts
Assets:
Derivative assets	37,542	54,302
Liabilities:
Derivative liabilities	38,402	55,622
Recurring basis | Mortgage banking derivatives
Assets:
Derivative assets	20	7
Liabilities:
Derivative liabilities	15	17
Recurring basis | Other derivatives
Assets:
Derivative assets	8,973	11,021
Liabilities:
Derivative liabilities	327	1,379
Recurring basis | Collateralized Mortgage Obligations [Member]
Assets:
Investment securities AFS:	699,852	747,719
Recurring basis | Mortgage-backed securities: Residential
Assets:
Investment securities AFS:	416,125	420,298
Recurring basis | Mortgage-backed securities: Commercial
Assets:
Investment securities AFS:	446,483	391,888
Recurring basis | Corporate securities
Assets:
Investment securities AFS:	20,533	19,434
Recurring basis | Municipal securities
Assets:
Investment securities AFS:	199,477	308,473
Recurring basis | Asset-backed Securities
Assets:
Investment securities AFS:	134,539	149,670
Recurring basis | US Treasury Notes Securities
Assets:
Investment securities AFS:		103,677
Recurring basis | Agency Securities
Assets:
Investment securities AFS:	3,972	3,900
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets:
Equity investments with readily determinable fair value	4,455	4,363
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Interest rate contracts
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 [Member]
Assets:
Investment securities AFS:	0	0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Mortgage-backed securities: Residential
Assets:
Investment securities AFS:	0	0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Mortgage-backed securities: Commercial
Assets:
Investment securities AFS:	0	0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate securities
Assets:
Investment securities AFS:	0	0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Municipal securities
Assets:
Investment securities AFS:	0	0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Asset-backed Securities
Assets:
Investment securities AFS:	0	0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | US Treasury Notes Securities
Assets:
Investment securities AFS:		103,677
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Agency Securities
Assets:
Investment securities AFS:	0	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		1,351
Recurring basis | Significant Other Observable Inputs (Level 2) | Interest rate contracts
Assets:
Derivative assets	37,542	54,302
Liabilities:
Derivative liabilities	38,402	55,622
Recurring basis | Significant Other Observable Inputs (Level 2) | Mortgage banking derivatives
Assets:
Derivative assets	20	7
Liabilities:
Derivative liabilities	15	17
Recurring basis | Significant Other Observable Inputs (Level 2) | Other derivatives
Assets:
Derivative assets	8,973	11,021
Liabilities:
Derivative liabilities	299	1,351
Recurring basis | Significant Other Observable Inputs (Level 2) | Collateralized Mortgage Obligations [Member]
Assets:
Investment securities AFS:	699,852	747,719
Recurring basis | Significant Other Observable Inputs (Level 2) | Mortgage-backed securities: Residential
Assets:
Investment securities AFS:	416,125	420,298
Recurring basis | Significant Other Observable Inputs (Level 2) | Mortgage-backed securities: Commercial
Assets:
Investment securities AFS:	446,483	391,888
Recurring basis | Significant Other Observable Inputs (Level 2) | Corporate securities
Assets:
Investment securities AFS:	20,533	19,434
Recurring basis | Significant Other Observable Inputs (Level 2) | Municipal securities
Assets:
Investment securities AFS:	198,619	307,615
Recurring basis | Significant Other Observable Inputs (Level 2) | Asset-backed Securities
Assets:
Investment securities AFS:	134,539	149,670
Recurring basis | Significant Other Observable Inputs (Level 2) | US Treasury Notes Securities
Assets:
Investment securities AFS:		0
Recurring basis | Significant Other Observable Inputs (Level 2) | Agency Securities
Assets:
Investment securities AFS:	3,972	3,900
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 contracts
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	28	28
Recurring basis | Significant Unobservable Inputs (Level 3) | Collateralized Mortgage Obligations [Member]
Assets:
Investment securities AFS:	0	0
Recurring basis | Significant Unobservable Inputs (Level 3) | Mortgage-backed securities: Residential
Assets:
Investment securities AFS:	0	0
Recurring basis | Significant Unobservable Inputs (Level 3) | Mortgage-backed securities: Commercial
Assets:
Investment securities AFS:	0	0
Recurring basis | Significant Unobservable Inputs (Level 3) | Corporate securities
Assets:
Investment securities AFS:	0	0
Recurring basis | Significant Unobservable Inputs (Level 3) | Municipal securities
Assets:
Investment securities AFS:	858	858
Recurring basis | Significant Unobservable Inputs (Level 3) | Asset-backed Securities
Assets:
Investment securities AFS:	0	0
Recurring basis | Significant Unobservable Inputs (Level 3) | US Treasury Notes Securities
Assets:
Investment securities AFS:		0
Recurring basis | Significant Unobservable Inputs (Level 3) | Agency Securities
Assets:
Investment securities AFS:	$ 0	$ 0
Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Costs to sell percentage	8.50%
Discount | Accounts Receivable | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate	0.20
Discount | Accounts Receivable | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate	0.60
Discount | Inventory | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate	0.50
Discount | 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, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	$ 815	$ 930
Change in fair value included in other comprehensive income	43	(77)
Ending Balance	858	853	$ 858	$ 853
Other derivatives
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	16	28	28	32
Change in fair value included in other comprehensive income	12	(17)	0	(21)
Ending Balance	28	11	28	11
Municipal Bonds [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance			858	943
Change in fair value included in other comprehensive income			0	(90)
Ending Balance	$ 858	$ 853	$ 858	$ 853

Fair Value Measurements - Ass_2

Fair Value Measurements - Assets Measured at Fair Value, Non-Recurring (Details) - Non-recurring basis - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
CRE loans
Assets:
Assets	$ 33,067	$ 3,475
C&I loans
Assets:
Assets	23,731	2,701
Loans held for sale, net
Assets:
Assets	23,717	2,287
OREO
Assets:
Assets		63
Quoted Prices in Active Markets for Identical Assets (Level 1) | CRE loans
Assets:
Assets	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | C&I loans
Assets:
Assets	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Loans held for sale, net
Assets:
Assets	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | OREO
Assets:
Assets		0
Significant Other Observable Inputs (Level 2) | CRE loans
Assets:
Assets	0	0
Significant Other Observable Inputs (Level 2) | C&I loans
Assets:
Assets	0	0
Significant Other Observable Inputs (Level 2) | Loans held for sale, net
Assets:
Assets	23,717	2,287
Significant Other Observable Inputs (Level 2) | OREO
Assets:
Assets		0
Significant Unobservable Inputs (Level 3) | CRE loans
Assets:
Assets	33,067	3,475
Significant Unobservable Inputs (Level 3) | C&I loans
Assets:
Assets	23,731	2,701
Significant Unobservable Inputs (Level 3) | Loans held for sale, net
Assets:
Assets	$ 0	0
Significant Unobservable Inputs (Level 3) | OREO
Assets:
Assets		$ 63

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, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Loans Receivable
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total gains (losses), fair value	$ (1,552)	$ (341)	$ (4,406)	$ (341)
Loans Receivable | CRE loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total gains (losses), fair value	(839)	(156)	(942)	(567)
Loans Receivable | C&I loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total gains (losses), fair value	(8,129)	(1,768)	(8,129)	(2,157)
OREO
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total gains (losses), fair value	$ 0	$ (37)	$ 0	$ (308)

Fair Value Measurements - Unobs

Fair Value Measurements - Unobservable Inputs, Valuation Techniques (Details) - Non-recurring basis $ in Thousands	Sep. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)
Collateral dependent loans | Significant Unobservable Inputs (Level 3) | Collateral Fair Value | Selling cost
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets	$ 41,012	$ 4,468
Inputs		0.085
Collateral dependent loans | Significant Unobservable Inputs (Level 3) | Enterprise Value | Discount
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets	9,701
Inputs		0.19
Collateral dependent loans | Significant Unobservable Inputs (Level 3) | Asset Fair Value | Discount
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets	$ 6,085	$ 1,708
Inputs		0.48
Collateral dependent loans | Significant Unobservable Inputs (Level 3) | Minimum | Collateral Fair Value | Selling cost
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Inputs		0.045
Collateral dependent loans | Significant Unobservable Inputs (Level 3) | Minimum | Asset Fair Value | Discount
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Inputs	0.39
Collateral dependent loans | Significant Unobservable Inputs (Level 3) | Maximum | Collateral Fair Value | Selling cost
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Inputs		0.085
Collateral dependent loans | Significant Unobservable Inputs (Level 3) | Maximum | Asset Fair Value | Discount
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Inputs	0.49
Collateral dependent loans | Significant Unobservable Inputs (Level 3) | Weighted Average | Collateral Fair Value | Selling cost
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Inputs	0.085	0.076
Collateral dependent loans | Significant Unobservable Inputs (Level 3) | Weighted Average | Enterprise Value | Discount
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Inputs	0.19
Collateral dependent loans | Significant Unobservable Inputs (Level 3) | Weighted Average | Asset Fair Value | Discount
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Inputs	0.47	0.48
OREO
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets		$ 63
OREO | Significant Unobservable Inputs (Level 3)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets		63
OREO | Significant Unobservable Inputs (Level 3) | Property Fair Value | Selling cost
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets		$ 63
Inputs		0.085
OREO | Significant Unobservable Inputs (Level 3) | Weighted Average | Property Fair Value | Selling cost
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Inputs	0.085

Fair Value Measurements - Carry

Fair Value Measurements - Carrying Amounts and Estimated Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Financial Assets:
Investment securities HTM	$ 246,231	$ 250,518
Equity investments without readily determinable fair values	35,500	39,387
Level 1 | Carrying Amount
Financial Assets:
Cash and cash equivalents	680,857	1,928,967
Financial Liabilities:
Convertible notes	444	444
Level 1 | Estimated Fair Value
Financial Assets:
Cash and cash equivalents	680,857	1,928,967
Financial Liabilities:
Convertible notes	440	451
Level 2/3 | Carrying Amount
Financial Assets:
Accrued interest receivable	51,898	61,720
Level 2/3 | Estimated Fair Value
Financial Assets:
Accrued interest receivable	51,898	61,720
Level 2 | Carrying Amount
Financial Assets:
Investment securities HTM	256,320	263,912
Equity investments without readily determinable fair values	35,453
Loans held for sale	25,714	3,408
Customers’ liabilities on acceptances	667	471
Financial Liabilities:
Noninterest bearing deposits	3,722,985	3,914,967
Money market, interest bearing demand and savings deposits	5,013,305	4,872,029
Time deposits	5,993,208	5,966,757
FHLB and FRB borrowings, Fair Value Disclosure	100,000
FHLB borrowings		1,795,726
Subordinated debentures	108,805	107,825
Accrued interest payable	107,017	168,174
Acceptances outstanding	667	471
Level 2 | Estimated Fair Value
Financial Assets:
Investment securities HTM	246,231	250,518
Equity investments without readily determinable fair values	35,453	39,387
Loans held for sale	25,750	3,419
Customers’ liabilities on acceptances	667	471
Financial Liabilities:
Noninterest bearing deposits	3,722,985	3,914,967
Money market, interest bearing demand and savings deposits	5,013,305	4,872,029
Time deposits	6,002,923	5,974,125
FHLB and FRB borrowings, Fair Value Disclosure	100,253
FHLB borrowings		1,795,820
Subordinated debentures	103,926	99,358
Accrued interest payable	107,017	168,174
Acceptances outstanding	667	471
Level 3 | Carrying Amount
Financial Assets:
Loans receivable, net	13,464,718	13,694,925
Servicing assets, net	9,339	9,631
Level 3 | Estimated Fair Value
Financial Assets:
Loans receivable, net	13,116,503	13,270,444
Servicing assets, net	$ 18,448	$ 14,853

Stockholders' Equity - Discussi

Stockholders' Equity - Discussion of Equity (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Jun. 30, 2024	Dec. 31, 2023	Jun. 30, 2023	Dec. 31, 2022
Equity [Abstract]
Total stockholders’ equity	$ 2,169,785,000	$ 2,030,424,000	$ 2,169,785,000	$ 2,030,424,000	$ 2,111,282,000	$ 2,121,243,000	$ 2,067,998,000	$ 2,019,328,000
Share repurchase program, authorized amount	50,000,000		50,000,000
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 35,300,000		35,300,000
Repurchase of treasury stock			$ 0
Dividends paid (in dollars per share)	$ 0.14	$ 0.14	$ 0.42	$ 0.42
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax	$ (2,000,000)	$ 4,700,000	$ (9,600,000)	$ (11,600,000)
Reclassification from AOCI, Debt Securities transferred from AFS to HTM amortization of unrealized losses, before tax	$ 820,000	$ 972,000	$ 2,600,000	$ 2,800,000

Stockholders' Equity - Changes

Stockholders' Equity - Changes in Accumulated Other Comprehensive (Loss) Income (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	$ 2,111,282,000	$ 2,067,998,000	$ 2,121,243,000	$ 2,019,328,000
Unrealized net gains (losses) on investment securities AFS	69,000,000	(68,261,000)	45,885,000	(68,117,000)
Unrealized net gains (losses) on interest rate contracts used for cash flow hedges	3,178,000	(4,310,000)	(7,758,000)	3,405,000
Reclassification adjustments for net gains realized in net income	(847,000)	(3,720,000)	(7,019,000)	(8,780,000)
Tax effect	(20,980,000)	22,490,000	(9,149,000)	21,664,000
Other comprehensive income (loss), net of tax	50,351,000	(53,801,000)	21,959,000	(51,828,000)
Balance at end of period	2,169,785,000	2,030,424,000	2,169,785,000	2,030,424,000
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax	(2,000,000)	4,700,000	(9,600,000)	(11,600,000)
Reclassification from AOCI, Debt Securities transferred from AFS to HTM amortization of unrealized losses, before tax	820,000	972,000	2,600,000	2,800,000
Net gain on sale of investment securities AFS	(326,000)	0	99,000	0
Accumulated other comprehensive loss, net
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(233,130,000)	(228,884,000)	(204,738,000)	(230,857,000)
Other comprehensive income (loss), net of tax	50,351,000	(53,801,000)	21,959,000	(51,828,000)
Balance at end of period	$ (182,779,000)	$ (282,685,000)	$ (182,779,000)	$ (282,685,000)

Stock-Based Compensation - Plan

Stock-Based Compensation - Plan Description (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	May 23, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated share-based compensation expense	$ 2,100	$ 3,000	$ 6,500	$ 8,800
Tax benefit from compensation expense	$ 610	$ 755	$ 1,900	$ 2,300
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			208,136
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
2024 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares initially available for grant to participants (in shares)					4,500,000
Number of shares available for future grant (in shares)	3,788,027		3,788,027
Contractual term			10 years
Purchase price of common stock, percent			100%

Stock-Based Compensation - Stoc

Stock-Based Compensation - Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Tax benefit from compensation expense	$ 610	$ 755	$ 1,900	$ 2,300
Stock options
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding - beginning of period (in shares)			629,367
Granted (in shares)			0
Exercised (in shares)			0
Expired (in shares)			(208,136)
Forfeited (in shares)			0
Outstanding - end of period (in shares)	421,231		421,231
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)			$ 16.61
Granted - weighted average exercise price (usd per share)			0
Exercised - weighted average exercise price (usd per share)			0
Expired - weighted-average exercise price per share (usd per share)			15.75
Forfeited - weighted average exercise price (usd per share)			0
Outstanding - end of period, weighted-average exercise price per share (usd per share)	$ 17.04		$ 17.04
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Options exercisable - end of period (in shares)	421,231		421,231
Options exercisable, weighted-average exercise price per share (usd per share)	$ 17.04		$ 17.04
Outstanding, weighted-average remaining contractual life (years)			1 year 10 months 17 days
Options exercisable, weighted-average remaining contractual life (years)			1 year 10 months 17 days
Outstanding, aggregate intrinsic value	$ 0		$ 0
Options exercisable, aggregate intrinsic value	$ 0		$ 0

Stock-Based Compensation - Rest

Stock-Based Compensation - Restricted Stock and Performance Unit Activity (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]
Allocated share-based compensation expense	$ 2,100,000	$ 3,000,000	$ 6,500,000	$ 8,800,000
Tax benefit from compensation expense	610,000	$ 755,000	1,900,000	2,300,000
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)			2,043,621
Granted (in shares)			750,271
Vested (in shares)			(926,151)
Forfeited (in shares)			(128,436)
Outstanding - end of period (in shares)	1,739,305		1,739,305
Weighted-Average Grant Date Fair Value
Outstanding - beginning of period (in dollars per share)			$ 12.09
Granted (in dollars per share)			12.33
Vested (in dollars per share)			12.60
Forfeited (in dollars per share)			13.50
Outstanding - end of period (in dollars per share)	$ 11.82		$ 11.82
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			$ 10,100,000	$ 8,200,000
Total compensation cost not yet recognized, period for recognition			1 year 11 months 12 days
Unrecognized compensation expense related to non-vested equity instruments other than options	$ 12,500,000		$ 12,500,000

Regulatory Matters (Details)

Regulatory Matters (Details) $ in Thousands	Sep. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)
Bank Subsidiary
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common equity Tier 1 capital, Actual Amount	$ 1,968,612	$ 1,940,303
Common equity Tier 1 capital, Actual Ratio	0.1362	0.1275
Total capital (to risk-weighted assets), Amount
Total capital, Actual	$ 2,116,519	$ 2,086,762
Tier I capital (to risk-weighted assets), Amount
Tier 1 capital, Actual	1,968,612	1,940,303
Tier I capital (to average assets), Amount
Tier 1 capital, Actual	$ 1,968,612	$ 1,940,303
Total capital and Tier I capital (to risk-weighted assets), Ratio
Total capital (to Risk Weighted Assets), Actual	0.1464	0.1371
Total capital (to Risk Weighted Assets), Required For Capital Adequacy Purposes	0.0800	0.0800
Tier 1 capital (to Risk Weighted Assets), Actual	0.1362	0.1275
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)	0.1146	0.0994
Tier I Capital (to Average Assets), Minimum For Capital Adequacy Purposes (Leverage)	0.0400	0.0400
Total capital (to Risk Weighted Assets), Required To Be Well Capitalized Under Prompt Corrective Action Provisions	0.1000	0.1000
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	$ 1,890,666	$ 1,869,774
Common equity Tier 1 capital, Actual Ratio	0.1307	0.1228
Total capital (to risk-weighted assets), Amount
Total capital, Actual	$ 2,143,477	$ 2,120,157
Tier I capital (to risk-weighted assets), Amount
Tier 1 capital, Actual	1,995,570	1,973,698
Tier I capital (to average assets), Amount
Tier 1 capital, Actual	$ 1,995,570	$ 1,973,698
Total capital and Tier I capital (to risk-weighted assets), Ratio
Total capital (to Risk Weighted Assets), Actual	0.1482	0.1392
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	0.1379	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), 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)	0.1161	0.1011
Tier I Capital (to Average Assets), Minimum For Capital Adequacy Purposes (Leverage)	0.0400	0.0400
Bank
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
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%
Common Equity Tier 1 | Bank
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, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Disaggregation of Revenue [Line Items]
Service fees on deposit accounts	$ 2,651	$ 2,415	$ 7,919	$ 6,961
Wire transfer and foreign currency fees	926	806	2,712	2,429
Wire transfer fees
Disaggregation of Revenue [Line Items]
Wire transfer and foreign currency fees	359	400	1,117	1,268
Foreign exchange fees
Disaggregation of Revenue [Line Items]
Wire transfer and foreign currency fees	567	406	1,595	1,161
Noninterest Bearing Deposits
Disaggregation of Revenue [Line Items]
Service fees on deposit accounts	2,625	2,391	7,835	6,888
Noninterest Bearing Deposits | Monthly service charges
Disaggregation of Revenue [Line Items]
Service fees on deposit accounts	240	243	728	729
Noninterest Bearing Deposits | Customer analysis charges
Disaggregation of Revenue [Line Items]
Service fees on deposit accounts	1,460	1,292	4,409	3,677
Noninterest Bearing Deposits | NSF charges
Disaggregation of Revenue [Line Items]
Service fees on deposit accounts	844	763	2,463	2,209
Noninterest Bearing Deposits | Other service charges
Disaggregation of Revenue [Line Items]
Service fees on deposit accounts	81	93	235	273
Interest-bearing Deposits | Monthly service charges
Disaggregation of Revenue [Line Items]
Service fees on deposit accounts	$ 26	$ 24	$ 84	$ 73

Subsequent Events (Details)

Subsequent Events (Details) $ in Millions	Oct. 30, 2024 USD ($)
Subsequent Event | Solar Tax Credit Investment Fund
Subsequent Event [Line Items]
Investments	$ 20