Pacific Premier Bancorp (PPBI) 10-Q 5 Nov 21 2021 Q3 Quarterly report Financial data

Cover

Cover - shares	9 Months Ended
	Sep. 30, 2021	Oct. 29, 2021
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2021
Document Transition Report	false
Entity File Number	0-22193
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	33-0743196
Entity Address, Address Line One	17901 Von Karman Avenue
Entity Address, Address Line Two	Suite 1200
Entity Address, City or Town	Irvine
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	92614
City Area Code	949
Local Phone Number	864-8000
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
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	PPBI
Security Exchange Name	NASDAQ
Entity Common Stock, Shares Outstanding		94,355,063
Entity Registrant Name	PACIFIC PREMIER BANCORP INC
Entity Central Index Key	0001028918
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q3

CONSOLIDATED STATEMENTS OF FINA

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
ASSETS
Cash and due from banks	$ 160,276	$ 135,429
Interest-bearing deposits with financial institutions	162,044	745,337
Cash and cash equivalents	322,320	880,766
Interest-bearing time deposits with financial institutions	2,708	2,845
Investments held-to-maturity, at amortized cost, net of allowance for credit losses	170,576	23,732
Investment securities available-for-sale, at fair value	4,709,815	3,931,115
FHLB, FRB, and other stock, at cost	118,399	117,055
Loans held for sale, at lower of cost or fair value	8,100	601
Loans held for investment	13,982,861	13,236,433
Allowance for credit losses	(211,481)	(268,018)
Loans held for investment, net	13,771,380	12,968,415
Accrued interest receivable	63,228	74,574
Premises and equipment	72,850	78,884
Deferred income taxes, net	83,432	89,056
Bank-owned life insurance	447,135	292,564
Intangible assets	73,451	85,507
Goodwill	901,312	898,569
Other assets	260,505	292,861
Total assets	21,005,211	19,736,544
Deposit accounts:
Noninterest-bearing checking	6,841,495	6,011,106
Interest-bearing:
Checking	3,477,902	2,913,260
Money market/savings	6,037,532	5,662,969
Retail certificates of deposit	1,113,070	1,471,512
Wholesale/brokered certificates of deposit	0	155,330
Total interest-bearing	10,628,504	10,203,071
Total deposits	17,469,999	16,214,177
FHLB advances and other borrowings	150,000	31,000
Subordinated debentures	330,408	501,511
Accrued Liabilities and Other Liabilities	216,688	243,207
Total liabilities	18,167,095	16,989,895
STOCKHOLDERS’ EQUITY
Preferred stock, $0.01 par value; 1,000,000 authorized; none issued and outstanding	0	0
Common stock, $0.01 par value; 150,000,000 shares authorized at September 30, 2021 and December 31, 2020; 94,354,211 shares and 94,483,136 shares issued and outstanding, respectively.	929	931
Additional paid-in capital	2,347,626	2,354,871
Retained earnings	488,385	330,555
Accumulated other comprehensive income	1,176	60,292
Total stockholders’ equity	2,838,116	2,746,649
Total liabilities and stockholders’ equity	$ 21,005,211	$ 19,736,544

CONSOLIDATED STATEMENTS OF FI_2

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Investments held-to-maturity, allowance for credit losses	$ (11)	$ 0
Investments held-to-maturity, fair value	$ 169,154	$ 25,013
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	1,000,000	1,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	150,000,000	150,000,000
Common stock, shares issued (in shares)	94,354,211	94,483,136
Common stock, shares outstanding (in shares)	94,354,211	94,483,136

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME (LOSS) (Unaudited) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
INTEREST INCOME
Loans	$ 157,025	$ 152,365	$ 167,455	$ 464,615	$ 414,059
Investment securities and other interest-earning assets	19,022	18,327	14,536	55,118	35,843
Total interest income	176,047	170,692	181,991	519,733	449,902
INTEREST EXPENSE
Deposits	2,432	3,265	8,509	10,123	28,651
FHLB advances and other borrowings	1	0	113	66	1,411
Subordinated debentures	4,545	6,493	6,823	17,889	13,827
Total interest expense	6,978	9,758	15,445	28,078	43,889
Net interest income before provision for credit losses	169,069	160,934	166,546	491,655	406,013
Provision for credit losses	(19,726)	(38,476)	4,210	(56,228)	190,299
Net interest income after provision for credit losses	188,795	199,410	162,336	547,883	215,714
NONINTEREST INCOME
Loan servicing income	536	622	481	1,616	1,395
Earnings on bank-owned life insurance	3,266	2,279	2,270	7,778	4,920
Net gain from sales of loans	1,187	1,546	9,542	3,094	8,281
Net gain from sales of investment securities	4,190	5,085	1,141	13,321	8,880
Other income	4,049	3,955	2,198	12,606	6,340
Total noninterest income	30,100	26,729	26,758	80,569	48,131
NONINTEREST EXPENSE
Compensation and benefits	53,592	53,474	51,021	159,614	128,408
Premises and occupancy	12,611	12,240	12,373	36,831	30,028
Data processing	6,296	5,765	6,783	17,889	14,501
Other real estate owned operations, net	0	0	(17)	0	6
FDIC insurance premiums	1,392	1,312	1,145	3,885	2,358
Legal and professional services	4,563	4,186	5,108	12,684	11,328
Marketing expense	2,008	1,490	1,718	5,096	4,449
Office expense	1,076	1,589	2,389	4,494	5,025
Loan expense	1,332	1,165	802	3,612	2,447
Deposit expense	3,974	3,985	4,728	11,818	14,674
Merger-related expense	0	0	2,988	5	44,058
Amortization of intangible assets	3,912	4,001	4,538	12,056	12,567
Other expense	5,284	5,289	5,003	15,041	11,331
Total noninterest expense	96,040	94,496	98,579	283,025	281,180
Net income (loss) before income taxes	122,855	131,643	90,515	345,427	(17,335)
Income tax expense (benefit)	32,767	35,341	23,949	90,369	(10,550)
Net income (loss)	$ 90,088	$ 96,302	$ 66,566	$ 255,058	$ (6,785)
EARNINGS (LOSS) PER SHARE
Basic (in dollars per share)	$ 0.95	$ 1.02	$ 0.71	$ 2.70	$ (0.10)
Diluted (in dollars per share)	$ 0.95	$ 1.01	$ 0.70	$ 2.68	$ (0.10)
WEIGHTED AVERAGE SHARES OUTSTANDING
Basic (in shares)	93,549,639	93,635,392	93,529,967	93,571,468	74,391,688
Diluted (in shares)	94,060,724	94,218,028	93,719,167	94,090,407	74,391,688
Service charges on deposit accounts
NONINTEREST INCOME
Noninterest income	$ 2,375	$ 2,222	$ 1,593	$ 6,629	$ 4,707
Other service fee income
NONINTEREST INCOME
Noninterest income	350	352	487	1,175	1,095
Debit card interchange fee income
NONINTEREST INCOME
Noninterest income	834	1,099	944	2,720	1,749
Trust custodial account fees
NONINTEREST INCOME
Noninterest income	11,446	7,897	6,960	26,565	9,357
Escrow and exchange fees
NONINTEREST INCOME
Noninterest income	$ 1,867	$ 1,672	$ 1,142	$ 5,065	$ 1,407

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Thousands		3 Months Ended			9 Months Ended
		Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income (loss)		$ 90,088	$ 96,302	$ 66,566	$ 255,058	$ (6,785)
Other comprehensive (loss) income, net of tax:
Unrealized (loss) gain on securities available-for-sale arising during the period, net of income taxes	[1]	(20,138)	45,343	(11,747)	(47,387)	30,473
Reclassification adjustment for net (gain) loss on sales of securities included in net income, net of income taxes	[2]	(2,991)	(3,630)	(814)	(9,510)	(6,333)
Net unrealized loss on securities transferred from available-for-sale to held-to-maturity, net of income taxes	[3]	(2,277)	0	0	(2,277)	0
Amortization of unrealized loss on securities transferred from available-for-sale to held-to-maturity, net of income taxes	[4]	58	0	0	58	0
Other comprehensive (loss) income, net of tax		(25,348)	41,713	(12,561)	(59,116)	24,140
Comprehensive income, net of tax		$ 64,740	$ 138,015	$ 54,005	$ 195,942	$ 17,355
[1]	Income tax (benefit) expense of the unrealized (loss) gain on securities was $(8.1) million, $18.2 million, and $(4.7) million for the three months ended September 30, 2021, June 30, 2021, and September 30, 2020, respectively, and $(19.0) million and $12.3 million for the nine months ended September 30, 2021 and September 30, 2020, respectively.
[2]	Income tax expense on the reclassification adjustment for net (gain) on sales of securities included in net income was $1.2 million, $1.5 million, and $327,000 for the three months ended September 30, 2021, June 30, 2021, and September 30, 2020, respectively, and $3.8 million and $2.5 million for the nine months ended September 30, 2021 and September 30, 2020, respectively.
[3]	Income tax (benefit) on the unrealized loss on securities transferred from available-for-sale to held-to maturity was $(913,000) for the three and nine months ended September 30, 2021.
[4]	Income tax expense on the amortization of unrealized (loss) on securities transferred from available-for-sale to held-to maturity included in net income was $24,000 for the three and nine months ended September 30, 2021.

CONSOLIDATED STATEMENTS OF CO_2

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Unrealized holding gain (loss) on securities arising during the period, income tax expense (benefit)	$ (8,100)	$ 18,200	$ (4,700)	$ (19,000)	$ 12,300
Reclassification adjustment for net (gains) losses on sale of securities included in net income, income tax expense (benefit)	1,200	$ 1,500	$ 327	3,800	$ 2,500
Unrealized loss on securities transferred from available-for-sale to held-to maturity, income tax (benefit)	(913)			(913)
Amortization of unrealized loss on securities transferred from available-for-sale to held-to-maturity, income tax expense (benefit)	$ 24			$ 24

CONSOLIDATED STATEMENTS OF STOC

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Total	Cumulative Effect of the Change in Accounting Principle	[1]	Common Stock	Additional Paid-in Capital	Accumulated Retained Earnings	Accumulated Retained EarningsCumulative Effect of the Change in Accounting Principle	[1]	Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period (in shares) at Dec. 31, 2019				59,506,057
Balance at beginning of period at Dec. 31, 2019	$ 2,012,594	$ (45,625)		$ 586	$ 1,594,434	$ 396,051	$ (45,625)		$ 21,523
Increase (Decrease) in Stockholders' Equity
Net income (loss)	(6,785)					(6,785)
Other comprehensive income (loss)	24,140								24,140
Cash dividends declared ($0.96 per common share)	(53,464)					(53,464)
Dividend equivalents declared ($0.96 per restricted stock unit)	0				217	(217)
Share-based compensation expense	7,747				7,747
Issuance of restricted stock, net (in shares)				493,411
Issuance of restricted stock, net	0
Issuance of common stock - acquisition (in shares)				34,407,403
Issuance of common stock - acquisition	749,603			$ 344	749,259
Restricted stock surrendered and canceled (in shares)				(102,486)
Restricted stock surrendered and canceled	(1,372)				(1,372)
Exercise of stock options (in shares)				71,136
Exercise of stock options	1,247				1,247
Balance at end of period (in shares) at Sep. 30, 2020				94,375,521
Balance at end of period at Sep. 30, 2020	2,688,085			$ 930	2,351,532	289,960			45,663
Balance at beginning of period (in shares) at Jun. 30, 2020				94,350,902
Balance at beginning of period at Jun. 30, 2020	2,654,647			$ 930	2,348,415	247,078			58,224
Increase (Decrease) in Stockholders' Equity
Net income (loss)	66,566					66,566
Other comprehensive income (loss)	(12,561)								(12,561)
Cash dividends declared ($0.96 per common share)	(23,590)					(23,590)
Dividend equivalents declared ($0.96 per restricted stock unit)	0				94	(94)
Share-based compensation expense	2,899				2,899
Issuance of restricted stock, net (in shares)				19,902
Issuance of restricted stock, net	0
Restricted stock surrendered and canceled (in shares)				(8,180)
Restricted stock surrendered and canceled	(99)				(99)
Exercise of stock options (in shares)				12,897
Exercise of stock options	223				223
Balance at end of period (in shares) at Sep. 30, 2020				94,375,521
Balance at end of period at Sep. 30, 2020	$ 2,688,085			$ 930	2,351,532	289,960			45,663
Balance at beginning of period (in shares) at Dec. 31, 2020	94,483,136			94,483,136
Balance at beginning of period at Dec. 31, 2020	$ 2,746,649			$ 931	2,354,871	330,555			60,292
Increase (Decrease) in Stockholders' Equity
Net income (loss)	255,058					255,058
Other comprehensive income (loss)	(59,116)								(59,116)
Repurchase and retirement of common stock (in shares)				(479,944)
Repurchase and retirement of common stock	(18,067)			$ (5)	(11,942)	(6,120)
Cash dividends declared ($0.96 per common share)	(90,747)					(90,747)
Dividend equivalents declared ($0.96 per restricted stock unit)	0				361	(361)
Share-based compensation expense	9,911				9,911
Issuance of restricted stock, net (in shares)				450,549
Issuance of restricted stock, net	0			$ 3	(3)
Restricted stock surrendered and canceled (in shares)				(149,782)
Restricted stock surrendered and canceled	(6,354)				(6,354)
Exercise of stock options (in shares)				50,252
Exercise of stock options	$ 782				782
Balance at end of period (in shares) at Sep. 30, 2021	94,354,211			94,354,211
Balance at end of period at Sep. 30, 2021	$ 2,838,116			$ 929	2,347,626	488,385			1,176
Balance at beginning of period (in shares) at Jun. 30, 2021				94,656,575
Balance at beginning of period at Jun. 30, 2021	2,813,419			$ 931	2,352,112	433,852			26,524
Increase (Decrease) in Stockholders' Equity
Net income (loss)	90,088					90,088
Other comprehensive income (loss)	(25,348)								(25,348)
Repurchase and retirement of common stock (in shares)				(280,270)
Repurchase and retirement of common stock	(11,170)			$ (3)	(6,965)	(4,202)
Cash dividends declared ($0.96 per common share)	(31,226)					(31,226)
Dividend equivalents declared ($0.96 per restricted stock unit)	0				127	(127)
Share-based compensation expense	3,349				3,349
Issuance of restricted stock, net (in shares)				14,592
Issuance of restricted stock, net	0			$ 1	(1)
Restricted stock surrendered and canceled (in shares)				(39,755)
Restricted stock surrendered and canceled	(1,046)				(1,046)
Exercise of stock options (in shares)				3,069
Exercise of stock options	$ 50				50
Balance at end of period (in shares) at Sep. 30, 2021	94,354,211			94,354,211
Balance at end of period at Sep. 30, 2021	$ 2,838,116			$ 929	$ 2,347,626	$ 488,385			$ 1,176
[1]	Related to the adoption of Accounting Standards Update 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments .

CONSOLIDATED STATEMENTS OF ST_2

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Stockholders' Equity [Abstract]
Cash dividends declared (in dollars per share)	$ 0.33	$ 0.25	$ 0.96	$ 0.75
Dividend equivalents declared (in dollars per share)	$ 0.33	$ 0.25	$ 0.96	$ 0.75

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities:
Net income (loss)	$ 255,058	$ (6,785)
Adjustments to net income:
Depreciation and amortization expense	12,147	9,186
Provision for credit losses	(56,228)	190,299
Share-based compensation expense	9,911	7,747
Loss on sales and disposals of premises and equipment	179	255
Loss on sales of or write downs of other real estate owned	0	42
Net amortization on securities	17,078	9,417
Net (accretion) of discounts/premiums for acquired loans and deferred loan fees/costs	(31,955)	(28,317)
Gain on sales of investment securities available-for-sale	(13,321)	(8,880)
Loss on debt extinguishment	180	0
Originations of loans held for sale	(34,902)	(12,217)
Proceeds from the sales of and principal payments from loans held for sale	29,973	14,201
Gain on sales of loans	(3,094)	(8,281)
Deferred income tax expense (benefit)	29,111	(52,471)
Change in accrued expenses and other liabilities, net	(17,404)	19,770
Income from bank-owned life insurance, net	(6,071)	(3,849)
Amortization of intangible assets	12,056	12,567
Change in accrued interest receivable and other assets, net	53,953	28,426
Net cash provided by operating activities	256,671	171,110
Cash flows from investing activities:
Net decrease in interest-bearing time deposits with financial institutions	137	0
Proceeds from sales of other real estate owned	0	273
Loan originations and payments, net	(719,657)	(111,334)
Proceeds from loans held for sale previously classified as portfolio loans	1,530	1,283,214
Purchase of loans held for investment	0	(66,470)
Proceeds from prepayments and maturities of securities held-to-maturity	7,509	9,782
Purchase of securities available-for-sale	(2,079,198)	(2,057,690)
Proceeds from prepayments and maturities of securities available-for-sale	429,235	149,720
Proceeds from sales of securities available-for-sale	630,437	558,899
Proceeds from the sales of premises and equipment	26	42
Proceeds from surrender of bank-owned life insurance	1,400	17,799
Purchase of bank-owned life insurance	(150,000)	0
Purchase of premises and equipment	(6,318)	(8,687)
Change in FHLB, FRB, and other stock, at cost	3	(22,584)
Funding of CRA investments, net	(19,001)	(9,025)
Change in cash acquired in acquisitions, net	0	937,100
Net cash (used in) provided by investing activities	(1,903,897)	681,039
Cash flows from financing activities:
Net increase in deposit accounts	1,255,822	516,308
Net change in short-term borrowings	140,000	(681,000)
Repayment of long-term FHLB borrowings	(21,503)	(5,000)
Proceeds from issuance of subordinated debt, net	0	147,359
Redemption of subordinated debentures	(171,153)	0
Cash dividends paid	(90,747)	(53,464)
Repurchase and retirement of common stock	(18,067)	0
Proceeds from exercise of stock options	782	1,247
Restricted stock surrendered and canceled	(6,354)	(1,372)
Net cash provided by (used in) financing activities	1,088,780	(75,922)
Net (decrease) increase in cash and cash equivalents	(558,446)	776,227
Cash and cash equivalents, beginning of period	880,766	326,850
Cash and cash equivalents, end of period	322,320	1,103,077
Supplemental cash flow disclosures:
Interest paid	29,745	43,188
Income taxes paid	56,472	26,151
Noncash investing activities during the period:
Transfers from portfolio loans to loans held for sale	1,006	1,276,277
Transfers from loans to other real estate owned	0	208
Transfers of investment securities from available-for-sale to held-to-maturity	154,456	0
Recognition of operating lease right-of-use assets	(3,812)	(11,118)
Recognition of operating lease liabilities	3,812	11,118
Due on unsettled security purchases	0	(20,000)
Fair value of stock and equity award consideration	0	749,603
Cash consideration	0	2
Fair value of assets acquired	0	8,102,281
Liabilities assumed	$ 0	$ 7,352,676

Basis of Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The consolidated financial statements include the accounts of Pacific Premier Bancorp, Inc. (the “Corporation”) and its wholly owned subsidiaries, including Pacific Premier Bank (the “Bank”) (collectively, the “Company,” “we,” “our,” or “us”). All significant intercompany accounts and transactions have been eliminated in consolidation. In the opinion of management, the unaudited consolidated financial statements reflect all normal recurring adjustments and accruals that are necessary for a fair presentation of the statement of financial position and the results of operations for the interim periods presented. The results of operations for the nine months ended September 30, 2021 are not necessarily indicative of the results that may be expected for any other interim period or the full year ending December 31, 2021. Certain items in the prior year financial statements were reclassified to conform to the current year presentation. Reclassification had no effect on prior year net income or stockholders’ equity. Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). The unaudited consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2020 (the “2020 Form 10-K”). The Company consolidates voting entities in which the Company has control through voting interests or entities through which the Company has a controlling financial interest in a variable interest entity (“VIE”). The Company evaluates its interests in these entities to determine whether they meet the definition of a VIE and whether the Company is required to consolidate these entities. A VIE is consolidated by its primary beneficiary, which is the party that has both (i) the power to direct the activities that most significantly impact the economic performance of the VIE and (ii) a variable interest that could potentially be significant to the VIE. To determine whether or not a variable interest the Company holds could potentially be significant to the VIE, the Company considers both qualitative and quantitative factors regarding the nature, size, and form of the Company's involvement with the VIE. See Note 16 – Variable Interest Entities for additional information. Effective June 1, 2020, the Corporation completed the acquisition of Opus Bank (“Opus”), a California-chartered state bank headquartered in Irvine, California, for a total consideration of approximately $749.6 million. See further discussion in Note 4 – Acquisitions

Recently Issued Accounting Pron

Recently Issued Accounting Pronouncements	9 Months Ended
	Sep. 30, 2021
Accounting Standards Update and Change in Accounting Principle [Abstract]
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements Accounting Standards Adopted in 2021 In October 2020, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU” or “Update”) 2020-08, Codification Improvements to Subtopic 310-20, Receivables - Nonrefundable Fees and Other Costs . The amendments included in this Update are intended to clarify that an entity should reevaluate whether a callable debt security is within the scope of paragraph 310-20-35-33 for each reporting period. The guidance in paragraph 310-20-35-33 relates to amortization of premiums on individual callable debt securities and the period over which the premium shall be amortized in relation to the date the security is callable. For public business entities, the amendments in this Update became effective for fiscal years beginning after December 15, 2020, and interim periods within those years. The Company’s adoption of this Update did not have a material impact on its financial statements. In January 2020, the FASB issued ASU 2020-01, Investments—Equity Securities (Topic 321), Investments—Equity Method and Joint Ventures (Topic 323), and Derivatives and Hedging (Topic 815)—Clarifying the Interactions between Topic 321, Topic 323, and Topic 815 . The amendments in this Update clarify the interaction of the accounting for equity securities under Topic 321 and investments under the equity method of accounting in Topic 323, as well as the accounting for certain forward contracts and purchased options accounted for under Topic 815. The amendments clarify that an entity should consider observable transactions that require it to either apply or discontinue the equity method of accounting for the purposes of applying the measurement alternative in accordance with Topic 321 immediately before applying or upon discontinuing the equity method. The amendments within this Update also clarify that when applying the guidance in paragraph 815-10-15-141(a) an entity should not consider whether, upon the settlement of the forward contract or exercise of the purchased option, individually or with existing investments, the underlying securities would be accounted for under the equity method in Topic 323 or the fair value option in accordance with the financial instruments guidance in Topic 825. An entity also would evaluate the remaining characteristics in paragraph 815-10-15-141 to determine the accounting for those forward contracts and purchased options. The amendments within this Update became effective for public business entities for fiscal years beginning after December 15, 2020, and interim periods within those fiscal years. The Company’s adoption of this Update did not have a material impact on its financial statements. In December 2019, the FASB issued ASU 2019-12, Simplifying the Accounting for Income Taxes , which includes updates to Topic 740 - Income Taxes. The amendments to this Update include the removal of the following exceptions included in Topic 740: (1) Exception to the general intra-period tax allocation principle when there is a loss from continuing operations and income or a gain from other items (for example, discontinued operations or other comprehensive income); (2) Exception to the requirement to recognize a deferred tax liability for equity method investments when a foreign subsidiary becomes an equity method investment; (3) Exception to the ability not to recognize a deferred tax liability for a foreign subsidiary when a foreign equity method investment becomes a subsidiary; and (4) Exception to the general methodology for calculating income taxes in an interim period when a year-to-date loss exceeds the anticipated loss for the year. The amendments included in this update also require the following: (1) Requiring that an entity recognize a franchise tax by (i) accounting for the amount based on income under Accounting Standards Codification (“ASC”) 740 and (ii) accounting for any residual amount as a non-income-based tax. (2) Requiring that an entity evaluate when a step up in the tax basis of goodwill should be considered part of the business combination in which the book goodwill was originally recognized and when it should be considered a separate transaction. (3) Specifying that an entity is not required to allocate any portion of the consolidated amount of current and deferred tax expense to a legal entity that is not subject to tax in its separate financial statements. However, an entity may elect to do so (on an entity-by-entity basis) for a legal entity that is both not subject to tax and disregarded by the taxing authority. (4) Requiring that an entity reflect the effect of an enacted change in tax laws or rates in the annual effective tax rate computation in the interim period that includes the enactment date. (5) Making minor Codification improvements for tax benefits related to tax-deductible dividends on employee stock ownership plan shares and investments in qualified affordable housing projects accounted for using the equity method. The amendments within this Update became effective for public business entities for fiscal years beginning after December 15, 2020, and interim periods within those fiscal years. The Company’s adoption of this Update did not have a material impact on its financial statements. Recent Accounting Guidance Not Yet Effective In January 2021, the FASB issued ASU 2021-01, Reference Rate Reform (Topic 848) . The amendments included in this Update clarify that certain optional expedients and exceptions in Topic 848 for contract modifications and hedge accounting apply to derivatives that are affected by the worldwide transition to new reference rates (commonly referred to as the “discounting transition”). Specifically, certain provisions in Topic 848, if elected by an entity, apply to derivative instruments that use an interest rate for margining, discounting, or contract price alignment that is modified as a result of reference rate reform. Amendments in this Update are to the expedients and exceptions in Topic 848 and capture the incremental consequences of the scope clarification and tailor the existing guidance to derivative instruments affected by the discounting transition. The amendments in this Update are effective immediately for all entities that elect to apply the optional guidance in Topic 848. An entity may elect to apply the amendments in this Update on a full retrospective basis as of any date from the beginning of an interim period that includes or is subsequent to March 12, 2020, or on a prospective basis to new modifications from any date within an interim period that includes or is subsequent to the date of the issuance of a final Update, up to the date that financial statements are available to be issued. The Company is currently evaluating the impact of this Update on its consolidated financial statements, upon which this accounting guidance is not expected to have a material impact. In March 2020, the FASB issued ASU 2020-04, Reference Rate Reform (Topic 848) — Facilitation of the Effects of Reference Rate Reform on Financial Reporting . In response to concerns about structural risks of interbank offered rates (“IBORs”), and, particularly, the risk of cessation of the London Interbank Offered Rate (“LIBOR”), regulators around the world have undertaken reference rate reform initiatives to identify alternative reference rates that are more observable or transaction-based and less susceptible to manipulation. The amendments in this Update provide optional guidance for a limited time to ease the potential burden in accounting for (or recognizing the effects of) reference rate reform on financial reporting as well as optional expedients and exceptions for applying GAAP to contracts, hedging relationships, and other transactions affected by reference rate reform if certain criteria are met. The amendments in this Update apply only to contracts and hedging relationships that reference LIBOR or another reference rate expected to be discontinued due to reference rate reform. The expedients and exceptions provided by the amendments do not apply to contract modifications made and hedging relationships entered into or evaluated after December 31, 2022. The amendments in this Update are elective and became effective upon issuance for all entities. An entity may elect to apply the amendments for contract modifications by Topic or Industry Subtopic as of any date from the beginning of an interim period that includes or is subsequent to March 12, 2020, or prospectively from a date within an interim period that includes or is subsequent to March 12, 2020, up to the date that the financial statements are available to be issued. Once elected for a Topic or an Industry Subtopic, the amendments in this Update must be applied prospectively for all eligible contract modifications for that Topic or Industry Subtopic. The Company has not yet made a determination on whether it will make this election and is currently tracking the exposure as of each reporting period and assessing the significance of impact towards implementing any necessary modification in consideration of the election of this amendment. An entity may elect to apply the amendments in this Update to eligible hedging relationships existing as of the beginning of the interim period that includes March 12, 2020 and to new eligible hedging relationships entered into after the beginning of the interim period that includes March 12, 2020. The Company has not entered into any hedging related transactions that reference LIBOR or another reference rate that is expected to be discontinued, and as such, the amendments included in this Update have not had an impact on the Company’s consolidated financial statements. The Company has created a cross-functional working group to manage the transition away from LIBOR. This working group is comprised of senior leadership and staff from functional areas that include: finance, treasury, lending, loan servicing, enterprise risk management, information technology, legal, and other internal stakeholders integral to the Bank’s transition away from LIBOR. The working group monitors developments related to transition and uncertainty surrounding reference rate reform and guides the Bank’s response. The working group is currently assessing the population of financial instruments that reference LIBOR, confirming our loan documents that reference LIBOR have been appropriately amended, ensuring that our internal systems are prepared for the transition, and managing the transition process with our customers. While the Company has not yet selected a preferred reference rate as an alternative to LIBOR, currently, new loan originations are primarily being made with the use of the Constant Maturity Treasury (“CMT”) Index. The Company may also consider the use of other alternative reference rates based on the individual needs of its customers as well as the types of credit being extended. In August 2020, the FASB issued ASU 2020-06, Debt - Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging - Contracts in Entity’s Own Equity (Subtopic 815-40) - Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity.

Significant Accounting Policies

Significant Accounting Policies	9 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Significant Accounting Policies	Significant Accounting Policies Our accounting policies are described in Note 1. Description of Business and Summary of Significant Accounting Policies , of our audited consolidated financial statements included in our 2020 Form 10-K. Select policies have been reiterated below that have a particular affiliation to our interim financial statements. Revenue Recognition. The Company accounts for certain of its revenue streams deemed to arise from contracts with customers in accordance with ASC 606 - Revenue from Contracts with Customers . Revenue streams within the scope of and accounted for under ASC 606 include: service charges and fees on deposit accounts, debit card interchange fees, custodial account fees, fees from other services the Bank provides its customers, and gains and losses from the sale of other real estate owned and property, premises and equipment. These revenue streams are included in noninterest income in the Company’s consolidated statements of income. ASC 606 requires revenue to be recognized when the Company satisfies related performance obligations by transferring to the customer a good or service. The recognition of revenue under ASC 606 requires the Company to first identify the contract with the customer, identify the performance obligations, determine the transaction price, allocate the transaction price to the performance obligations, and finally recognize revenue when the performance obligations have been satisfied and the good or service has been transferred. Revenue is measured as the amount of consideration the Company expects to receive in exchange for the transfer of goods or services to the associated customer. The majority of the Company’s contracts with customers associated with revenue streams that are within the scope of ASC 606 are considered short-term in nature and can be canceled at any time by the customer or the Bank, such as a deposit account agreement. Other more significant revenue streams for the Company such as interest income on loans and investment securities are specifically excluded from the scope of ASC 606 and are accounted for under other applicable GAAP. Goodwill and Other Intangible Assets. Goodwill is generally determined as the excess of the fair value of the consideration transferred, plus the fair value of any noncontrolling interests in the acquiree, over the fair value of the net assets acquired and liabilities assumed as of the acquisition date. Goodwill and intangible assets acquired in a purchase business combination and determined to have indefinite useful lives are not amortized, but are tested for impairment at least annually or more frequently if events and circumstances lead management to believe the value of goodwill may be impaired. Impairment testing is performed at the reporting unit level, which is considered the Company level as management has identified the Company is its sole reporting unit as of September 30, 2021. Management’s assessment of goodwill is performed in accordance with ASC 350-20 - Intangibles - Goodwill and Other - Goodwill , which allows the Company to first perform a qualitative assessment of goodwill to determine if it is more likely than not the fair value of the Company’s equity is below its carrying value. However, GAAP also allows the Company, at its option, to unconditionally forego the qualitative assessment and proceed directly to a quantitative assessment. When performing a qualitative assessment of goodwill, should the results of such analysis indicate it is more likely than not the fair value of the Company’s equity is below its carrying value, the Company then performs the quantitative assessment of goodwill to determine the fair value of the reporting unit and compares it to its carrying value. If the fair value of the reporting unit is below its carrying value, the Company would then recognize the amount of impairment as the amount by which the reporting unit’s carrying value exceeds its fair value, limited to the total amount of goodwill allocated to the reporting unit. Impairment losses are recorded as a charge to noninterest expense. Other intangible assets consist of core deposit intangible (“CDI”) and customer relationship intangible assets arising from whole bank acquisitions, and are amortized on either an accelerated basis, reflecting the pattern in which the economic benefits of the intangible assets are consumed or otherwise used, or on a straight-line amortization method over their estimated useful lives, which range from 6 to 11 years. GAAP also requires that intangible assets other than goodwill be tested for impairment when events and circumstances change, indicating that their carrying value may not be recoverable. For intangible assets other than goodwill, the Company first performs a qualitative assessment to determine if the carrying value of such assets may not be recoverable. A quantitative assessment is followed to determine the amount of impairment in the event the carrying value of such assets are deemed not recoverable. Impairment is measured as the amount by which their carrying value exceeds their estimated fair value. Leases. The Company accounts for its leases in accordance with ASC 842, which requires the Company to record liabilities for future lease obligations as well as assets representing the right to use the underlying leased asset. Leases with a term of 12 months or less are accounted for using straight-line expense recognition with no right-of-use asset being recorded for such leases. Other than short-term leases, the Company classifies its leases as either finance leases or operating leases. Leases are classified as finance leases when any of the following are met: (a) the lease transfers ownership of the underlying asset to the lessee by the end of the lease term, (b) the lease contains an option to purchase the underlying asset that the lessee is reasonably certain to exercise, (c) the term of the lease represents a major part of the remaining life of the underlying asset, (d) the present value of the future lease payments equals or exceeds substantially all of the fair value of the underlying asset, or (e) the underling leased asset is expected to have no alternative use to the lessor at the end of the lease term due to its specialized nature. When the Company’s assessment of a lease does not meet the foregoing criteria, and the term of the lease is in excess of 12 months, the lease is classified as an operating lease. Liabilities to make lease payments and right-of-use assets are determined based on the total contractual base rents for each lease, discounted at the rate implicit in the lease or at the Company’s estimated incremental borrowing rate if the rate is not implicit in the lease. The Company measures future base rents based on the minimum payments specified in the lease agreement, giving consideration for periodic contractual rent increases which are based on an escalation rate or a specified index. When future rent payments are based on an index, the Company uses the index rate observed at the time of lease commencement to measure future lease payments. Liabilities to make lease payments are accounted for using the interest method, which are reduced by periodic rent payments, net of interest accretion. Right-of-use assets for finance leases are amortized on a straight-line basis over the term of the lease, while right-of-use assets for operating leases are amortized over the term of the lease by amounts that represent the difference between periodic straight-line lease expense and periodic interest accretion on the related liability to make lease payments. Expense recognition for finance leases is representative of the sum of periodic amortization of the associated right-of-use asset as well as the periodic interest accretion on the liability to make lease payments. Expense recognition for operating leases is recorded on a straight-line basis. As of September 30, 2021, all of the Company’s leases were classified as either operating leases or short-term leases. From time to time the Company leases portions of the space it leases to other parties through sublease transactions. Income received from these transactions is recorded on a straight-line basis over the term of the sublease. Securities. The Company has established written guidelines and objectives for its investing activities. At the time of purchase, management designates the security as either held-to-maturity, available-for-sale, or held for trading based on the Company’s investment objectives, operational needs, and intent. The investments are monitored to ensure that those activities are consistent with the established guidelines and objectives. Securities Held-to-Maturity. Investments in debt securities that management has the positive intent and ability to hold to maturity are reported at cost and adjusted for periodic principal payments and the amortization of premiums and accretion of discounts, which are recognized in interest income using the interest method over the period of time remaining to investment’s maturity. Transfers of debt securities from available-for-sale classification to held-to-maturity classification are made at fair value. Any associated unrealized gains or losses on such securities become part of the security’s amortized cost at the time of transfer and are subsequently amortized or accreted into interest income over the remaining life of the security using the interest method. In addition, the related unrealized gains and losses included in accumulated other comprehensive income at the time a security is transferred are also subsequently amortized or accreted into interest income over the remaining life of the security using the interest method. Securities Available-for-Sale. Investments in debt securities that management has no immediate plan to sell, but which may be sold in the future, are carried at fair value. Premiums and discounts are amortized using the interest method over the remaining period to the call date for premiums or contractual maturity for discounts and, in the case of mortgage-backed securities, the estimated average life, which can fluctuate based on the anticipated prepayments on the underlying collateral of the securities. Unrealized holding gains and losses, net of tax, are recorded in a separate component of stockholders’ equity as accumulated other comprehensive income. Realized gains and losses on the sales of securities are determined on the specific identification method, recorded on a trade date basis based on the amortized cost basis of the specific security and are included in noninterest income as net gain (loss) on investment securities. Equity Securities. Investments classified as equity securities that have readily determinable fair values are carried at fair value with changes in fair value recognized in current period earnings as a component of noninterest income. Equity securities that do not have readily determinable fair values are carried at cost, adjusted for any observable price changes in orderly transactions for identical or similar investments of the same issuer. Such investments are also recorded net of any previously recognized impairment. Certain equity securities the Company holds, such as investments in the stock of the Federal Home Loan Bank and the Federal Reserve Bank of San Francisco are carried at cost, less any previously recognized impairment. Investment in these securities is restricted to member banks and the securities are not actively traded on an exchange. Allowance for Credit Losses (“ACL”) on Investment Securities. The ACL on investment securities is determined for both the held-to-maturity and available-for-sale classifications of the investment portfolio in accordance with ASC 326. The ACL for held-to-maturity investment securities is recorded at the time of purchase or acquisition, representing the Company’s best estimate of current expected credit losses (“CECL”) as of the date for the consolidated statements of financial condition. The ACL for held-to-maturity investment securities is determined on a collective basis, based on shared risk characteristics, and is determined at the individual security level when the Company deems a security to no longer possess shared risk characteristics. For investment securities where the Company has reason to believe the credit loss exposure is remote, such as those guaranteed by the U.S. government or other government enterprises, a zero credit loss assumption is applied. For available-for-sale investment securities, the Company performs a quarterly qualitative evaluation of securities in an unrealized loss position to determine if, for those investments in an unrealized loss position, the decline in fair value is credit related or non-credit related. In determining whether a security’s decline in fair value is credit related, the Company considers a number of factors including, but not limited to: (i) the extent to which the fair value of the investment is less than its amortized cost; (ii) the financial condition and near-term prospects of the issuer, (iii) downgrades in credit ratings, (iv) payment structure of the security, (v) the ability of the issuer of the security to make scheduled principal and interest payments, and (vi) general market conditions which reflect prospects for the economy as a whole, including interest rates and sector credit spreads. If it is determined that the unrealized loss can be attributed to credit loss, the Company records the amount of credit loss through a charge to provision for credit losses in current period earnings. However, the amount of credit loss recorded in current period earnings is limited to the amount of the total unrealized loss on the security, which is measured as the amount by which the security’s fair value is below its amortized cost. If it is likely the Company will be required to sell the security in an unrealized loss position, the total amount of the loss is recognized in current period earnings. Unrealized losses deemed non-credit related are recorded, net of tax, through accumulated other comprehensive income. The Company determines expected credit losses on available-for-sale and held-to-maturity securities through a discounted cash flow approach, using the security’s effective interest rate. However, as previously mentioned, the measurement of credit losses on available-for-sale securities only occurs when, through the Company’s qualitative assessment, it is determined all or a portion of the unrealized loss is deemed to be credit related. The Company’s discounted cash flow approach incorporates assumptions about the collectability of future cash flows. The amount of credit loss is measured as the amount by which the security’s amortized cost exceeds the present value of expected future cash flows. Credit losses on available-for-sale securities are measured on an individual basis. The Company does not measure credit losses on an investment’s accrued interest receivable, but rather promptly reverses from current period earnings the amount of accrued interest that is no longer deemed collectible. Accrued interest receivable for investment securities is included in accrued interest receivable balances in the consolidated statements of financial condition. Loans Held for Investment. Loans held for investment are loans the Company has the ability and intent to hold until their maturity. These loans are carried at amortized cost, including discounts and premiums on purchased and acquired loans, and net deferred loan origination fees and costs. Purchase discounts and premiums and net deferred loan origination fees and costs on loans are accreted or amortized as an adjustment of yield, using the interest method, over the expected lives of the loans. Income recognition of deferred loan fees, deferred loan costs, discounts and premiums is discontinued for loans that are placed on nonaccrual. Any remaining discounts, premiums, deferred loan fees or costs, and prepayment fees associated with loan payoffs prior to contractual maturity are included in loan interest income in the period of payoff. Loan commitment fees received to originate or purchase a loan are deferred and, if the commitment is exercised, recognized over the life of the loan using the interest method as an adjustment of yield or, if the commitment expires unexercised, recognized as income upon expiration of the commitment. The Company accrues interest on loans using the interest method and only if deemed collectible. Loans for which the accrual of interest has been discontinued are designated as nonaccrual loans. The accrual of interest on loans is discontinued when principal or interest is past due 90 days or more based on the contractual terms of the loan or when, in the opinion of management, there is reasonable doubt as to collection of principal and or interest. When loans are placed on nonaccrual status, previously accrued and uncollected interest is promptly reversed against current period interest income, and as such an ACL for accrued interest receivable is not established. Interest income generally is not recognized on nonaccrual loans unless the likelihood of further loss is remote. Interest payments received on nonaccrual loans are applied as a reduction to the loan principal balance. Interest accruals are resumed on such loans only when they are brought current with respect to interest and principal and when, in the judgment of management, the loans are estimated to be fully collectible as to all principal and interest. Allowance for Credit Losses on Loans. The Company accounts for credit losses on loans in accordance with ASC 326, which requires the Company to record an estimate of expected lifetime credit losses for loans at the time of origination or acquisition. The ACL is maintained at a level deemed appropriate by management to provide for current expected future credit losses in the portfolio as of the date of the consolidated statements of financial condition. Estimating expected credit losses requires management to use relevant forward-looking information, including the use of reasonable and supportable forecasts. The measurement of the ACL is performed by collectively evaluating loans with similar risk characteristics. The Company measures the ACL on commercial real estate loans and commercial loans using a discounted cash flow approach, and a historical loss rate methodology is used to determine the ACL on retail loans. The Company’s discounted cash flow methodology incorporates a probability of default and loss given default model, as well as expectations of future economic conditions, using reasonable and supportable forecasts. Together, the probability of default and loss given default model with the use of reasonable and supportable forecasts generate estimates for cash flows expected and not expected to be collected over the estimated life of a loan. Estimates of future expected cash flows ultimately reflect assumptions made concerning net credit losses over the life of a loan. The use of reasonable and supportable forecasts requires significant judgment, such as selecting forecast scenarios and related scenario-weighting, as well as determining the appropriate length of the forecast horizon. Management leverages economic projections from a reputable and independent third party to inform and provide its reasonable and supportable economic forecasts. Other internal and external indicators of economic forecasts may also be considered by management when developing the forecast metrics. The Company’s ACL model reverts to long-term average loss rates for purposes of estimating cash flows beyond a period deemed reasonable and supportable. The Company forecasts probability of default and loss given default based on economic forecast scenarios over a two-year time horizon before reverting to long-term average loss rates over a period of three years. The duration of the forecast horizon, the period over which forecasts revert to long-term averages, the economic forecasts that management utilizes, as well as additional internal and external indicators of economic forecasts that management considers, may change over time depending on the nature and composition of our loan portfolio. Changes in economic forecasts, in conjunction with changes in loan specific attributes, impact a loan’s probability of default and loss given default, which can drive changes in the determination of the ACL. Expectations of future cash flows are discounted at the loan’s effective interest rate. The resulting ACL term loans represents the amount by which the loan’s amortized cost exceeds the net present value of a loan’s discounted cash flows expected to be collected. The ACL for credit facilities is determined by discounting estimates for cash flows not expected to be collected. The ACL is recorded through a charge to provision for credit losses and is reduced by charge-offs, net of recoveries on loans previously charged-off. It is the Company’s policy to charge-off loan balances at the time they have been deemed uncollectible. Please also see Note 7 - Allowance for Credit Losses , of these consolidated financial statements for additional discussion concerning the Company’s ACL methodology, including discussion concerning economic forecasts used in the determination of the ACL. The Company’s ACL model also includes adjustments for qualitative factors, where appropriate. Since historical information (such as historical net losses and economic cycles) may not always, by itself, provide a sufficient basis for determining future expected credit losses, the Company periodically considers the need for qualitative adjustments to the ACL. Qualitative adjustments may be related to and include, but not limited to factors such as: (i) management’s assessment of economic forecasts used in the model and how those forecasts align with management’s overall evaluation of current and expected economic conditions, (ii) organization specific risks such as credit concentrations, collateral specific risks, regulatory risks, and external factors that may ultimately impact credit quality, (iii) potential model limitations such as limitations identified through back-testing, and other limitations associated with factors such as underwriting changes, acquisition of new portfolios and changes in portfolio segmentation, and (iv) management’s overall assessment of the adequacy of the ACL, including an assessment of model data inputs used to determine the ACL. The Company has a credit portfolio review process designed to detect problem loans. Problem loans are typically those of a substandard or worse internal risk grade, and may consist of loans on nonaccrual status, troubled debt restructurings (“TDRs”), loans where the likelihood of foreclosure on underlying collateral has increased, collateral dependent loans and other loans where concern or doubt over the ultimate collectability of all contractual amounts due has become elevated. Such loans may, in the opinion of management, be deemed to no longer possess risk characteristics similar to other loans in the loan portfolio, and as such may require individual evaluation to determine an appropriate ACL for the loan. When a loan is individually evaluated, the Company typically measures the expected credit loss for the loan based on a discounted cash flow approach, unless the loan has been deemed collateral dependent. Collateral dependent loans are loans where the repayment of the loan is expected to come from the operation of and/or eventual liquidation of the underlying collateral. The ACL for collateral dependent loans is determined using estimates for the expected fair value of the underlying collateral, less costs to sell. Although management uses the best information available to derive estimates necessary to measure an appropriate level of ACL, future adjustments to the ACL may be necessary due to economic, operating, regulatory, and other conditions that may extend beyond the Company’s control. Additionally, various regulatory agencies, as an integral part of their examination process, periodically review the Company’s ACL and credit review process. Such agencies may require the Company to recognize additions to the ACL based on judgments different from those of management. The Company has segmented the loan portfolio according to loans that share similar attributes and risk characteristics. Each segment possesses varying degrees of risk based on, among other things, the type of loan, the type of collateral, and the sensitivity of the borrower or industry to changes in external factors such as economic conditions. These segment groupings are: investor loans secured by real estate, business loans secured by real estate, commercial loans, and retail loans. Within each segment grouping there are various classes of loans as disclosed below. The Company determines the ACL for loans based on this more detailed loan segmentation and classification. At September 30, 2021, the Company had the following segments and classes of loans: Investor Loans Secured by Real Estate: • Commercial real estate non-owner-occupied - Commercial real estate (“CRE”) non-owner-occupied includes loans for which the Company holds real property as collateral, but where the borrower does not occupy the underlying property. The primary risks associated with these loans include the borrower’s inability to pay, material decreases in the value of the real estate that is being held as collateral, significant increases in interest rates , changes in market rents, and vacancy of the underlying property, any of which may make the real e state loan unprofitable to the borrower. Real estate loans may be more adversely affected by conditions in the real estate markets or in the general economy. • Multifamily - Multifamily loans are secured by multi-tenant (5 or more units) residential real properties. Payments on multifamily loans are dependent on the successful operation or management of the properties, and repayment of these loans may be subject to adverse conditions in the real estate market or the economy. • Construction and land - We originate loans for the construction of one-to-four family and multifamily residences and CRE properties in our primary market area. We concentrate our origination efforts on single homes and infill multifamily and commercial projects in established neighborhoods where there is not abundant land available for development. Construction loans are considered to have higher risks due to construction completion and timing risk, and the ultimate repayment being sensitive to interest rate changes, government regulation of real property, and the availability of long-term financing. Additionally, economic conditions may impact the Company’s ability to recover its investment in construction loans, as adverse economic conditions may negatively impact the real estate market, which could affect the borrower’s ability to complete and sell the project. Additionally, the fair value of the underlying collateral may fluctuate as market conditions change. We occasionally originate land loans located predominantly in California for the purpose of facilitating the ultimate construction of a home or commercial building. The primary risks include the borrower’s inability to pay and the inability of the Company to recover its investment due to a decline in the fair value of the underlying collateral. Business Loans Secured by Real Estate: • Commercial real estate owner-occupied - CRE owner-occupied includes loans for which the Company holds real property as collateral and where the underlying property is occupied by the borrower, such as with a place of business. These loans are primarily underwritten based on the cash flows of the business and secondarily on the real estate. The primary risks associated with CRE owner-occupied loans include the borrower’s inability to pay, material decreases in the value of the real estate that is being held as collateral, and significant increases in interest rates, which may make the real estate loan unprofitable to the borrower. Real estate loans may be more adversely affected by conditions in the real estate markets or in the general economy. • Franchise secured by real estate - Franchise real estate secured loans are business loans secured by real property occupied by franchised restaurants, generally quick-service restaurants. These loans are primarily underwritten based on the cash flows of the business and secondarily on the real estate. Risks associated with these loans include material decreases in the value of real estate being held as collateral, and the borrower’s inability to pay as a result of increases in interest rates or decreases in cash flow from the underlying business. • Small Business Administration (“SBA”) - We are approved to originate loans under the SBA’s Preferred Lenders Program (“PLP”). The PLP lending status affords us a higher level of delegated credit autonomy, translating to a significantly shorter turnaround time from application to funding, which is critical to our marketing efforts. We originate loans nationwide under the SBA’s 7(a), SBA Express, International Trade, and 504(a) loan programs, in conformity with SBA underwriting and documentation standards. SBA loans are similar to commercial business loans, but have additional credit enhancement provided by the U.S. Small Business Administration, for up to 85% of the loan amount for loans up to $150,000 and 75% of the loan amount for loans of more than $150,000. However, as part of the Consolidated Appropriations Act of 2021, the credit enhancement provided by the SBA under the 7(a) program was temporarily increased to 90% through September 30, 2021. The Company originates SBA loans with the intent to sell the guaranteed portion into the secondary market on a quarterly basis. Certain loans classified as SBA are secured by commercial real estate property. SBA loans secured by hotels are included in the segment investor loans secured by real estate, and SBA loans secured by all other forms of real estate are included in the business loans secured by real estate segment. All other SBA loans are included in the commercial loans segment below, and are secured by business assets. Commercial Loans: • Commercial and industrial (including franchise commercial loans) (“C&I”) - Loans to businesses, secured by business assets including inventory, receivables, and machinery and equipment . Loan types include revolving lines of credit, term loans, seasonal loans, and loans secured by liquid collateral such as cash deposits or marketable securities. Franchise credit facilities not secured by real estate and Home Owners’ Association (“HOA”) credit facilities are included in C&I loans. We also issue letters of credit on behalf of our customers. Risk arises primarily due to the difference between expected and actual cash flows of the borrowers. In addition, the recoverability of the Company’s investment in these loans is also dependent on other factors primarily dictated by the type of collateral securing these loans, and occasionally upon other borrower assets and guarantor assets. The fair value of the collateral securing these loans may fluctua te as market conditions change. In the case of loans secured by accounts receivable, the recovery of the Company’s investment is dependent upon the borrower’s ability to collect amounts due from its customers. Retail Loans: • One-to-four family - Although we do not originate first lien single family loans, we have acquired them through bank acquisitions. The primary risks of one-to-four family loans include the borrower’s inability to pay, material decreases in the value of the real estate that is being held as collateral, and significant increases in interest rates, which may make loans unprofitable to the borrower. • Consumer loans - In addition to consumer loans acquired through our various bank acquisitions, we originate a limited number of consumer loans, generally to banking clients, which consist primarily of home equity lines of credit, savings account secured loans, and auto loans. Repayment of these loans is dependent on the borrower’s ability to pay and the fair value of the underlying collateral. Troubled Debt Restructurings (“TDRs”). From time to time, the Company makes modifications to certain loans when a borrower is experiencing financial difficulty. These modifications are made to alleviate temporary impairments in the borrower’s financial condition and/or constraints on the borrower’s ability to repay the

Acquisitions

Acquisitions	9 Months Ended
	Sep. 30, 2021
Business Combination and Asset Acquisition [Abstract]
Acquisitions	Acquisitions Acquisition of Opus Effective as of June 1, 2020, the Corporation completed the acquisition of Opus, a California-chartered state bank headquartered in Irvine, California, pursuant to a definitive agreement dated as of January 31, 2020. At closing, Opus had $8.32 billion in total assets, $5.94 billion in gross loans, and $6.91 billion in total deposits and operated 46 banking offices located throughout California, Washington, Oregon, and Arizona. As a result of the Opus acquisition, the Corporation acquired specialty lines of business, including trust and escrow services. Prior to the Opus acquisition, PENSCO Trust Company LLC, a Colorado-chartered non-depository trust company (“PENSCO”), operated as an indirect, wholly-owned subsidiary of Opus and served as a custodian for self-directed individual retirement accounts (“IRA”), the funds of which account owners used for self-directed investments in various alternative asset classes. Immediately following the Opus acquisition, PENSCO merged with and into the Bank and operates its custodial business under the name of Pacific Premier Trust, as a division of the Bank. As of May 31, 2020, PENSCO had approximately $14.48 billion of custodial assets and approximately 44,000 client accounts. Prior to the Opus acquisition, Commerce Escrow operated as a division of Opus, offering commercial escrow services and facilitating tax-deferred commercial exchanges under Section 1031 of the Internal Revenue Code of 1986, as amended (the “Internal Revenue Code”). Following the acquisition of Opus, Commerce Escrow operates as a division of the Bank, which created synergies with the Company’s existing escrow deposit business. The acquisition of Opus expanded the Company’s presence in major metropolitan markets with greater operational scale, diversifies business lines, banking products and services, as well as deposit base and clients by adding a new channel of stable, low-cost deposits and fee income from Opus’s trust and escrow businesses, improves revenue, and accelerates the Company’s ability to invest in technology solutions and increase efficiencies. Pursuant to the terms of the merger agreement, the consideration paid to Opus shareholders consisted of whole shares of the Corporation’s common stock and cash in lieu of fractional shares of the Corporation’s common stock. Upon consummation of the transaction, (i) each share of Opus common stock issued and outstanding immediately prior to the effective time of the acquisition was canceled and exchanged for the right to receive 0.900 shares of the Corporation’s common stock, with cash to be paid in lieu of fractional shares at a rate of $19.31 per share, and (ii) each share of Opus Series A non-cumulative, non-voting preferred stock issued and outstanding immediately prior to the effective time of the acquisition was converted into and canceled in exchange for the right to receive that number of shares of the Corporation’s common stock equal to the product of (X) the number of shares of Opus common stock into which such share of Opus preferred stock was convertible in connection with, and as a result of, the acquisition, and (Y) 0.900, in each case, plus cash in lieu of fractional shares of the Corporation’s common stock. The Corporation issued 34,407,403 shares, net of 165,136 shares for tax withholding from Opus equity award holders, of the Corporation’s common stock valued at $21.62 per share, which was the closing price of the Corporation’s common stock on May 29, 2020, the last trading day prior to the consummation of the acquisition, and paid cash in lieu of fractional shares. The Corporation assumed Opus’s warrants and options, which represented the issuance of up to approximately 406,778 and 9,538 additional shares of the Corporation’s common stock, valued at approximately $1.8 million and $46,000, respectively, and issued substitute restricted stock units in an aggregate amount of $328,000. The value of the total transaction consideration paid amounted to approximately $749.6 million. The Opus warrants assumed by the Corporation expired unexercised as of September 30, 2020 and no longer remain outstanding. The Opus options assumed by the Corporation were fully exercised during the third quarter of 2020. (Dollars in thousands) May 29, 2020 Merger consideration Value of stock consideration paid to shareholders $ 747,458 Cash paid in lieu of fractional shares 2 Value of restricted stock awards 328 Value of options and warrants (1) 1,817 Total merger consideration $ 749,605 ______________________________ (1) The Opus warrants assumed by the Corporation expired unexercised on September 30, 2020 and no longer remain outstanding. The Opus options assumed by the Corporation were fully exercised during the third quarter of 2020. Core deposit intangible of $16.1 million, customer relationship intangible of $3.2 million, and goodwill of $93.0 million were recognized as a result of the acquisition. Goodwill represents the future economic benefits arising from net assets acquired that are not individually identified and separately recognized and is attributable to synergies expected to be derived from the combination of the two entities. Goodwill recognized in this transaction is not deductible for income tax purposes. The following table summarizes the estimated fair value of assets acquired and liabilities assumed of Opus as of June 1, 2020 under the acquisition method of accounting, net of purchase accounting adjustments: (Dollars in thousands) June 1, 2020 Net identifiable assets acquired, at fair value Assets acquired Cash and cash equivalents $ 937,102 Interest bearing time deposits with financial institutions 137 Investment securities 829,891 Loans 5,809,451 Allowance for credit losses (21,242) Premises and equipment 22,121 Intangible assets 19,267 Deferred tax assets 43,395 Other assets 369,169 Total assets acquired $ 8,009,291 Liabilities assumed Deposits $ 6,915,990 FHLB advances and other borrowings 213,491 Subordinated debt 138,653 Other liabilities 84,542 Total liabilities assumed 7,352,676 Total fair value of net identifiable assets 656,615 Total merger consideration 749,605 Goodwill recognized $ 92,990 The Company accounted for this transaction under the acquisition method of accounting in accordance with ASC 805, Business Combinations , which requires purchased assets and liabilities assumed and consideration exchanged to be recorded at their respective estimated fair values at the date of acquisition. The determination of estimated fair values required management to make certain estimates about discount rates, future expected cash flows, market conditions at the time of the acquisition, and other future events that are highly subjective in nature and subject to refinement for up to one year after the closing date of acquisition as additional information relative to the closing date fair values becomes available and such information is considered final, whichever is earlier. Since the acquisition, the Company has made a net adjustment of $146,000 related to loans, deferred tax assets, other assets, and other liabilities. In May 2021, the Company finalized its fair values analysis of the acquired assets and assumed liabilities associated with this acquisition. The Company determined the fair value of loans, intangible assets, investment securities, real property, leases, deposits, and borrowings with the assistance of third-party valuations. Loans Opus’s loan portfolio was recorded at fair value at the date of acquisition. A valuation of Opus’s loan portfolio was performed by a third party as of the acquisition date in accordance with ASC 820 to assess the fair value of the loan portfolio, considering adjustments for interest rate risk, required equity return, servicing, credit, and liquidity risk. The loan portfolio was segmented into two groups: non-PCD loans and PCD loans. The non-PCD loans were pooled based on similar characteristics, such as loan type, fixed or adjustable interest rates, payment type, index rate and caps/floors, and non-accrual status. The PCD loans were valued at the loan level with similar characteristics noted above. The fair value was calculated using a discounted cash flow analysis. The discount rate utilized to analyze fair value considered the cost of funds rate, capital charge, servicing costs, and liquidity premium, mostly based on industry standards. At the acquisition date, non-PCD loans and PCD loans had a fair value of $4.94 billion and $841.2 million, respectively, and a contractual balance of $5.05 billion and $896.5 million, respectively. In accordance with GAAP, there was no carryover of the allowance for credit losses that had been previously recorded by Opus. The Company recorded an ACL of $75.9 million through an increase to the provision for credit losses. The initial ACL for PCD loans of $21.2 million was established through an adjustment to the acquired loan balance and goodwill. Core deposit intangible The CDI on non-maturing deposits was determined by evaluating the underlying characteristics of the deposit relationships, including customer attrition, deposit interest rates and maintenance costs, and costs of alternative funding using the discounted cash flow approach. The core deposit intangibles represent the costs saved by the Company between maintaining the existing deposits and obtaining alternative funds over the life of the deposit base. Customer relationship intangible PENSCO operated as the legal trustee for its clients to provide recurring trust services over the life of client’s trust, and as a custodian for certain accounts that do not qualify as individual retirement accounts pursuant to the Internal Revenue Code. PENSCO could separately identify each of its customer relationships through the trustee agreement between each customer and PENSCO, as well as account-level specific information, and has a history and pattern of conducting business with them as their legal trustee. In the event that PENSCO (or its successor trust division within the Bank) were to merge, reorganize, get acquired, or change its name, the surviving entity will become the trustee or custodian of the IRAs provided that the surviving entity is authorized to serve in that capacity pursuant to the Internal Revenue Code. Accordingly, such PENSCO client relationships met the contractual or other legal rights criterion for identification as a recognizable intangible asset separate from goodwill. The fair value of the customer relationship intangible asset was determined through the use of an excess earnings model associated with the expected fee income associated with underlying client relationships. Fixed maturity deposits In determining the fair value of certificates of deposit, the cash flows of the contractual interest payments during the specific period of the certificates of deposit and scheduled principal payout were discounted to present value at market-based interest rates. FHLB advances The fair value of fixed rate Federal Home Loan Bank of San Francisco (“FHLB”) advances was determined using a discounted cash flow approach. The cash flows of the advances were projected based on scheduled payments of the fixed rate advances, factoring in prepayment fees. The cash flows were then discounted to present value using the FHLB rates as of May 29, 2020. Subordinated debt The fair value of subordinated debt was determined by using a discounted cash flow method using a market participant discount rate for similar instruments. The Company incurred $5,000 of expenses in connection with the Opus acquisition during the nine months ended September 30, 2021 compared with $44.1 million during the nine months ended September 30, 2020. Merger-related expenses are included in noninterest expense in the Company's consolidated statements of income. The following table presents certain unaudited pro forma financial information for illustrative purposes only, for the three and nine months ended September 30, 2020 as if Opus had been acquired on January 1, 2020. This unaudited pro forma information combines the historical results of Opus with the Company’s consolidated historical results and includes certain adjustments reflecting the estimated impact of certain fair value adjustments for the respective periods. The pro forma information is not indicative of what would have occurred had the acquisition occurred as of the beginning of the year prior to the acquisition. The unaudited pro forma information does not consider any changes to the provision for credit losses resulting from recording loan assets at fair value, cost savings, or business synergies. As a result, actual amounts would have differed from the unaudited pro forma information presented, and the differences could be significant. Three Months Ended Nine Months Ended (Dollar in thousands, except per share data) September 30, 2020 September 30, 2020 Net interest and other income $ 193,304 $ 577,799 Net income (loss) 66,566 (78,570) Basic earnings (loss) per share 0.71 (0.84) Diluted earnings (loss) per share 0.70 (0.84)

Investment Securities

Investment Securities	9 Months Ended
	Sep. 30, 2021
Investments, Debt and Equity Securities [Abstract]
Investment Securities	Investment Securities The amortized cost and estimated fair value of investment securities available-for-sale were as follows: (Dollars in thousands) Amortized Gross Unrealized Gross Unrealized Estimated Investment securities available-for-sale: September 30, 2021 U.S. Treasury $ 77,803 $ 1,665 $ (126) $ 79,342 Agency 531,867 5,252 (7,026) 530,093 Corporate 383,910 5,381 (2,900) 386,391 Municipal bonds 1,237,923 27,585 (9,642) 1,255,866 Collateralized mortgage obligations 665,851 1,109 (4,729) 662,231 Mortgage-backed securities 1,807,758 6,194 (18,060) 1,795,892 Total investment securities available-for-sale $ 4,705,112 $ 47,186 $ (42,483) $ 4,709,815 December 31, 2020 U.S. Treasury $ 30,153 $ 2,380 $ — $ 32,533 Agency 666,702 24,292 (608) 690,386 Corporate 412,223 3,591 (506) 415,308 Municipal bonds 1,412,012 37,260 (3,253) 1,446,019 Collateralized mortgage obligations 513,259 819 (712) 513,366 Mortgage-backed securities 812,384 21,662 (543) 833,503 Total investment securities available-for-sale $ 3,846,733 $ 90,004 $ (5,622) $ 3,931,115 The carrying amount and estimated fair value of investment securities held-to-maturity were as follows: (Dollars in thousands) Amortized Allowance for Credit Losses Net Carrying Amount Gross Unrecognized Gross Unrecognized Estimated Investment securities held-to-maturity: September 30, 2021 Municipal bonds $ 154,399 $ (11) $ 154,388 $ — $ (2,225) $ 152,163 Mortgage-backed securities 14,656 — 14,656 803 — 15,459 Other 1,532 — 1,532 — — 1,532 Total investment securities held-to-maturity $ 170,587 $ (11) $ 170,576 $ 803 $ (2,225) $ 169,154 December 31, 2020 Mortgage-backed securities $ 22,124 $ — $ 22,124 $ 1,281 $ — $ 23,405 Other 1,608 — 1,608 — — 1,608 Total investment securities held-to-maturity $ 23,732 $ — $ 23,732 $ 1,281 $ — $ 25,013 The Company reassesses classification of certain investments as part of the ongoing review of the investment securities portfolio. During the third quarter of 2021, the Company transferred approximately $157.6 million of municipal bonds, which the Company intends and has the ability to hold to maturity, from available-for-sale to held-to-maturity securities. The transfer of these securities was accounted for at fair value. These securities had a net carrying amount of $154.5 million with a pre-tax unrealized loss of $3.2 million, which was reflected as a discount on the date of transfer. This discount, as well as the related unrealized loss in accumulated other comprehensive income, will be amortized into interest income as a yield adjustment over the remaining term of the securities. The amortization of the unrealized loss reported in accumulated other comprehensive income will offset the effect on interest income of the amortization of the discount. No gains or losses were recorded at the time of transfer. Investment securities with carrying values of $131.8 million and $147.3 million as of September 30, 2021 and December 31, 2020, respectively, were pledged to secure public deposits, other borrowings, and for other purposes as required or permitted by law. At September 30, 2021 and December 31, 2020, 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. Unrealized Gains and Losses Unrealized gains and losses on investment securities available-for-sale are recognized in stockholders’ equity as accumulated other comprehensive income or loss. At September 30, 2021, the Company had accumulated other comprehensive income of $4.7 million, or $3.4 million net of tax, compared to accumulated other comprehensive income of $84.4 million, or $60.3 million net of tax, at December 31, 2020. For investment securities transferred from available-for-sale to held-to-maturity, the unrealized gains and losses at the date of transfer continue to be reported in stockholders’ equity as accumulated other comprehensive income and are amortized over the remaining lives of the securities with an offsetting entry to interest income as an adjustment of yield. At September 30, 2021, the gross unrealized loss on municipal bonds transferred from available-for-sale to held-to-maturity in accumulated other comprehensive income was $3.1 million, or $2.2 million net of tax. The table below summarizes the number, fair value, and gross unrealized holding losses of the Company’s investment securities available-for-sale in an unrealized loss position for which an allowance for credit losses has not been recorded as of the dates indicated, aggregated by investment category and length of time in a continuous loss position. September 30, 2021 Less than 12 Months 12 Months or Longer Total (Dollars in thousands) Number Fair Gross Number Fair Gross Number Fair Gross Investment securities available-for-sale: U.S. Treasury 2 $ 32,626 $ (126) — $ — $ — 2 $ 32,626 $ (126) Agency 24 339,270 (5,365) 12 64,991 (1,661) 36 404,261 (7,026) Corporate 8 88,666 (1,916) 1 20,346 (984) 9 109,012 (2,900) Municipal bonds 108 651,169 (9,102) 2 11,068 (540) 110 662,237 (9,642) Collateralized mortgage obligations 30 302,104 (4,297) 5 44,615 (432) 35 346,719 (4,729) Mortgage-backed securities. 113 1,570,327 (17,961) 1 7,395 (99) 114 1,577,722 (18,060) Total investment securities available-for-sale 285 $ 2,984,162 $ (38,767) 21 $ 148,415 $ (3,716) 306 $ 3,132,577 $ (42,483) December 31, 2020 Less than 12 Months 12 Months or Longer Total (Dollars in thousands) Number Fair Gross Number Fair Gross Number Fair Gross Investment securities available-for-sale: Agency 4 $ 74,194 $ (307) 9 $ 10,434 $ (301) 13 $ 84,628 $ (608) Corporate 9 71,226 (506) — — — 9 71,226 (506) Municipal bonds 56 312,894 (3,253) — — — 56 312,894 (3,253) Collateralized mortgage obligations 21 215,603 (710) 1 431 (2) 22 216,034 (712) Mortgage-backed securities 16 139,071 (543) — — — 16 139,071 (543) Total investment securities available-for-sale 106 $ 812,988 $ (5,319) 10 $ 10,865 $ (303) 116 $ 823,853 $ (5,622) Allowance for Credit Losses on Investment Securities The Company reviews individual securities classified as available-for-sale to determine whether a decline in fair value below the amortized cost basis is deemed credit related or due to other factors such as changes in interest rates and general market conditions. An ACL on available-for-sale investment securities is recorded when the fair value of the investment is below its amortized cost and the decline in fair value has been deemed, through the Company’s qualitative assessment, to be credit related. Non-credit related declines in fair value of available-for-sale investment securities, which may be attributed to changes in interest rates and other market related factors, are not recorded through an ACL. Such declines are recorded as an adjustment to accumulated other comprehensive income, net of tax. In the event the Company is required to sell or has the intent to sell an available-for-sale security that has experienced a decline in fair value below its amortized cost, the Company writes the amortized cost of the security down to fair value in the current period. Credit losses on held-to-maturity investment securities are recorded at the time of purchase or acquisition and when the Company has designated securities as held-to-maturity. Credit losses on held-to-maturity investment securities are representative of current expected credit losses that may be incurred over the life of the investment. The Company determines credit losses on both available-for-sale and held-to-maturity investment securities through the use of a discounted cash flow approach using the security’s effective interest rate. The ACL is measured as the amount by which an investment security’s amortized cost exceeds the net present value of expected future cash flows. However, the amount of credit losses for available-for-sale investment securities is limited to the amount of a security’s unrealized loss. The ACL is established through a charge to provision for credit losses in current period earnings. During the second quarter of 2020, the Company acquired $829.9 million of available-for-sale securities in connection with the acquisition of Opus. Such securities were evaluated and it was determined that there were no investment securities classified as purchase credit deteriorated upon acquisition and, as a result, no allowance for credit losses was recorded. At September 30, 2021, the Company had an ACL of $11,000 for held-to-maturity investment securities classified as municipal bonds. These securities were transferred from available-for-sale to held-to-maturity during the third quarter of 2021. There was no ACL for held-to-maturity investment securities at December 31, 2020. The Company recognized $11,000 of provision for credit losses for held-to-maturity investment securities during the three months and nine months ended September 30, 2021. There was no provision for credit losses recognized for held-to-maturity investment securities during the three months June 30, 2021, and September 30, 2020, and the nine months ended September 30, 2020. The Company had no ACL for available-for-sale or investment securities at September 30, 2021 and December 31, 2020. As of September 30, 2021, the Company had not recorded credit losses on certain available-for-sale securities that were in an unrealized loss position due to the high quality of the investments, with investment grade ratings, and many of them are issued by U.S. government agencies. Additionally, the Company continues to receive contractual principal and interest payments in a timely manner. The Company performed a qualitative assessment of these investments as of September 30, 2021, and does not believe the declines in fair value are credit related. There was no provision for credit losses recognized for available-for-sale investment securities during the three months ended September 30, 2021, June 30, 2021, or September 30, 2020, and the nine months ended September 30, 2021 and September 30, 2020. At September 30, 2021 and December 31, 2020, there were no available-for-sale or held-to-maturity securities in nonaccrual status. All securities in the portfolio were current with their contractual principal and interest payments. At September 30, 2021 and December 31, 2020, there were no securities purchased with deterioration in credit quality since their origination. At September 30, 2021 and December 31, 2020, there were no collateral dependent available-for-sale or held-to-maturity securities. The following table summarizes the Company’s investment securities portfolio by Moody’s external rating equivalent and by vintage as of September 30, 2021: Vintage (Dollars in thousands) 2021 2020 2019 2018 2017 Prior Total Investment securities available-for-sale at fair value: U.S. Treasury Aaa - Aa3 $ 32,973 $ 14,634 $ — $ 21,274 $ 10,461 $ — $ 79,342 Agency Aaa - Aa3 24,393 324,241 44,487 76,415 — 46,390 515,926 Baa1 - Baa3 — — — 5,715 — 8,452 14,167 Corporate debt A1 - A3 79,252 57,799 — — 17,864 10,029 164,944 Baa1 - Baa3 36,473 100,614 70,704 — — 13,656 221,447 Municipal bonds Aaa - Aa3 118,941 725,524 294,323 32,429 50,536 33,264 1,255,017 A1 - A3 — — — — — 849 849 Collateralized mortgage obligations Aaa - Aa3 212,687 224,252 86,604 18,523 14,199 105,966 662,231 Mortgage-backed securities Aaa - Aa3 1,250,191 391,394 101,935 6,891 25,280 20,201 1,795,892 Total investment securities available-for-sale 1,754,910 1,838,458 598,053 161,247 118,340 238,807 4,709,815 Investment securities held-to-maturity at amortized cost: Municipal bonds Aaa - Aa3 — 154,399 — — — — 154,399 Mortgage-backed securities Aaa - Aa3 — — — 4,206 3,767 6,683 14,656 Other Baa1 - Baa3 — — — 600 — 932 1,532 Total investment securities held-to-maturity — 154,399 — 4,806 3,767 7,615 170,587 Total investment securities $ 1,754,910 $ 1,992,857 $ 598,053 $ 166,053 $ 122,107 $ 246,422 $ 4,880,402 Realized Gains and Losses During the three months ended September 30, 2021, June 30, 2021, and September 30, 2020, the Company recognized gross gains on sales of available-for-sale securities in the amount of $4.2 million, $10.0 million, and $1.2 million, respectively. The Company did not recognize any gross losses during the three months ended September 30, 2021. During the three months ended June 30, 2021 and September 30, 2020, the Company recognized gross losses on sales of available-for-sale securities in the amount of $5.0 million and $12,000, respectively. The Company had net proceeds from the sales of available-for-sale securities of $165.8 million, $285.3 million, and $212.5 million during the three months ended September 30, 2021, June 30, 2021, and September 30, 2020, respectively. During the nine months ended September 30, 2021 and 2020, the Company recognized gross gains on sales of available-for-sale securities in the amount of $18.5 million and $10.4 million, respectively. During the nine months ended September 30, 2021 and 2020, the Company recognized gross losses on the sales of available-for sale securities in the amount of $5.1 million and $1.5 million, respectively. The Company had net proceeds from the sales of available-for-sale securities of $630.4 million and $558.9 million during the nine months ended September 30, 2021 and 2020, respectively. Contractual maturities The amortized cost and estimated fair value of investment securities at September 30, 2021, by contractual maturity, are shown in the table below. Due in One Year Due after One Year Due after Five Years Due after Total (Dollars in thousands) Amortized Fair Amortized Fair Amortized Fair Amortized Fair Amortized Fair Investment securities available-for-sale: U.S. Treasury $ — $ — $ 30,126 $ 31,734 $ 47,677 $ 47,608 $ — $ — $ 77,803 $ 79,342 Agency — — 352,023 353,184 135,567 134,426 44,277 42,483 531,867 530,093 Corporate 10,021 10,029 21,178 21,227 352,711 355,135 — — 383,910 386,391 Municipal bonds — — 3,528 3,731 95,420 96,849 1,138,975 1,155,286 1,237,923 1,255,866 Collateralized mortgage obligations — — 41,692 41,631 226,958 223,612 397,201 396,988 665,851 662,231 Mortgage-backed securities — — 12,098 12,704 709,280 709,155 1,086,380 1,074,033 1,807,758 1,795,892 Total investment securities available-for-sale 10,021 10,029 460,645 464,211 1,567,613 1,566,785 2,666,833 2,668,790 4,705,112 4,709,815 Investment securities held-to-maturity: Municipal bonds — — — — — — 154,399 152,163 154,399 152,163 Mortgage-backed securities — — — — — — 14,656 15,459 14,656 15,459 Other — — — — — — 1,532 1,532 1,532 1,532 Total investment securities held-to-maturity — — — — — — 170,587 169,154 170,587 169,154 Total investment securities $ 10,021 $ 10,029 $ 460,645 $ 464,211 $ 1,567,613 $ 1,566,785 $ 2,837,420 $ 2,837,944 $ 4,875,699 $ 4,878,969 FHLB, FRB, and Other Stock The Company’s equity securities primarily consist of FHLB and Federal Reserve Bank of San Francisco (“FRB”) stock, which are considered restricted securities and held as a condition of membership of the FHLB and the Board of Governors of the Federal Reserve System. These equity securities without readily determinable fair values are carried at cost less impairment. At September 30, 2021, the Company had $17.3 million in FHLB stock, $74.5 million in FRB stock, and $26.7 million in other stock, all carried at cost. During the three months ended September 30, 2021, June 30, 2021, and September 30, 2020, the FHLB did not repurchase any of the Company’s excess FHLB stock through its stock repurchase program.

Loans Held for Investment

Loans Held for Investment	9 Months Ended
	Sep. 30, 2021
Receivables [Abstract]
Loans Held for Investment	Loans Held for Investment The Company’s loan portfolio is segmented according to loans that share similar attributes and risk characteristics. Investor loans secured by real estate includes CRE non-owner-occupied, multifamily, construction, and land, as well as SBA loans secured by real estate, which are loans collateralized by hotel/motel real property. Business loans secured by real estate are loans to businesses that are collateralized by real estate where the operating cash flow of the business is the primary source of repayment. This loan portfolio includes CRE owner-occupied, franchise loans secured by real estate, and SBA loans secured by real estate, which are collateralized by real property other than hotel/motel real property. Commercial loans are loans to businesses where the operating cash flow of the business is the primary source of repayment. This loan portfolio includes commercial and industrial, franchise loans non-real estate secured, and SBA loans non-real estate secured. Retail loans include single family residential and consumer loans. Single family residential includes home equity lines of credit, as well as second trust deeds. The following table presents the composition of the loan portfolio for the periods indicated: September 30, December 31, (Dollars in thousands) 2021 2020 Investor loans secured by real estate CRE non-owner-occupied $ 2,823,065 $ 2,675,085 Multifamily 5,705,666 5,171,356 Construction and land 292,815 321,993 SBA secured by real estate 49,446 57,331 Total investor loans secured by real estate 8,870,992 8,225,765 Business loans secured by real estate CRE owner-occupied 2,242,164 2,114,050 Franchise real estate secured 354,481 347,932 SBA secured by real estate 69,937 79,595 Total business loans secured by real estate 2,666,582 2,541,577 Commercial loans Commercial and industrial 1,888,870 1,768,834 Franchise non-real estate secured 392,950 444,797 SBA non-real estate secured 12,732 15,957 Total commercial loans 2,294,552 2,229,588 Retail loans Single family residential 144,309 232,574 Consumer 6,426 6,929 Total retail loans 150,735 239,503 Gross loans held for investment (1) 13,982,861 13,236,433 Allowance for credit losses for loans held for investment (211,481) (268,018) Loans held for investment, net $ 13,771,380 $ 12,968,415 Total unfunded loan commitments $ 2,504,188 $ 1,947,250 Loans held for sale, at lower of cost or fair value $ 8,100 $ 601 ______________________________ (1) Includes net deferred origination fees of $3.0 million and $2.6 million, and unaccreted fair value net purchase discounts of $85.0 million and $113.8 million as of September 30, 2021 and December 31, 2020, respectively. Loans Serviced for Others and Loan Securitization The Company generally retains the servicing rights of the guaranteed portion of SBA loans sold, for which the Company records a servicing asset at fair value within its other assets category. Servicing assets are subsequently measured using the amortization method and amortized to noninterest income. Servicing assets are evaluated for impairment based on the fair value of the assets as compared to carrying amount. At September 30, 2021 and December 31, 2020, the servicing asset totaled $4.1 million and $5.3 million, respectively, and was included in other assets in the Company’s consolidated statement of financial condition. Servicing rights are evaluated for impairment based upon the fair value of the rights as compared to the carrying amount. Impairment is recognized through a valuation allowance, to the extent the fair value is less than the carrying amount. At September 30, 2021 and December 31, 2020, the Company determined that no valuation allowance was necessary. Opus entered into securitization sales on December 23, 2016 with the Federal Home Loan Mortgage Corporation (“Freddie Mac”). The transaction involved the sale of $509 million in originated multifamily loans through a Freddie Mac-sponsored transaction. One class of Freddie Mac guaranteed structured pass-through certificates was issued and purchased entirely by Opus. In connection with the Opus acquisition, the Company's continuing involvement includes sub-servicing responsibilities, general representations and warranties, and reimbursement obligations. Servicing responsibilities on loan sales generally include obligations to collect and remit payments of principal and interest, provide foreclosure services, manage payments of taxes and insurance premiums, and otherwise administer the underlying loans. In connection with the securitization transaction, Freddie Mac was designated as the master servicer and appointed the Company to perform sub-servicing responsibilities, which generally include the servicing responsibilities described above with the exception of the servicing of foreclosed or defaulted loans. The overall management, servicing, and resolution of defaulted loans and foreclosed loans are separately designated to the special servicer, a third-party institution that is independent of the master servicer and the Company. The master servicer has the right to terminate the Company in its role as sub-servicer and direct such responsibilities accordingly. General representations and warranties associated with loan sales and securitization sales require the Company to uphold various assertions that pertain to the underlying loans at the time of the transaction, including, but not limited to, compliance with relevant laws and regulations, absence of fraud, enforcement of liens, no environmental damages, and maintenance of relevant environmental insurance. Such representations and warranties are limited to those that do not meet the quality represented at the transaction date and do not pertain to a decline in value or future payment defaults. In circumstances where the Company breaches its representations and warranties, the Company would generally be required to cure such instances through a repurchase or substitution of the subject loan(s). To the extent the ultimate resolution of defaulted loans results in contractual principal and interest payments that are deficient, the Company is obligated to reimburse Freddie Mac for such amounts, not to exceed 10% of the original principal amount of the loans comprising the securitization pool at the closing date of December 23, 2016. The liability recorded for Company’s exposure to the reimbursement agreement with Freddie Mac was $448,000 as of September 30, 2021 and December 31, 2020. Loans sold and serviced for others are not included in the accompanying consolidated statements of financial condition. The unpaid principal balance of loans and participations serviced for others were $590.9 million at September 30, 2021 and $686.0 million at December 31, 2020. Included within the balances were loans transferred through securitization with Freddie Mac of $85.2 million and SBA participations serviced for others of $372.7 million at September 30, 2021, and loans transferred through securitization with Freddie Mac of $99.4 million and SBA participations serviced for others of $421.7 million at December 31, 2020. Concentration of Credit Risk As of September 30, 2021, the Company’s loan portfolio was primarily collateralized by various forms of real estate and business assets located predominately in California. The Company’s loan portfolio contains concentrations of credit in multifamily, CRE non-owner-occupied, CRE owner-occupied, and C&I business loans. The Bank maintains policies approved by the Bank’s Board of Directors (the “Bank Board”) that address these concentrations and diversifies its loan portfolio through loan originations, purchases, and sales to meet approved concentration levels. Under applicable laws and regulations, the Bank may not make secured loans to one borrower in excess of 25% of the Bank’s unimpaired capital plus surplus and likewise in excess of 15% of the Bank’s unimpaired capital plus surplus for unsecured loans. These loans-to-one borrower limitations result in a dollar limitation of $838.4 million for secured loans and $503.0 million for unsecured loans at September 30, 2021. In order to manage concentration risk, the Bank maintains a house lending limit well below these statutory maximums. At September 30, 2021, the Bank’s largest aggregate outstanding balance of loans to one borrower was $176.8 million secured by multifamily properties. Credit Quality and Credit Risk Management The Company’s credit quality and credit risk are controlled in two areas. The first is the loan origination process, wherein the Bank underwrites credit and chooses which types and levels of risk it is willing to accept. The Company maintains a credit policy which addresses many related topics, sets forth maximum tolerances for key elements of loan risk, and indicates appropriate protocols for identifying and analyzing these risk elements. The policy sets forth specific guidelines for analyzing each of the loan products the Company offers from both an individual and portfolio-wide basis. The credit policy is reviewed annually by the Bank Board. The Bank’s underwriters ensure all key risk factors are analyzed, with most underwriting including a global cash flow analysis of the prospective borrowers. The second area is in the ongoing oversight of the loan portfolio, where existing credit risk is measured and monitored, and where performance issues are dealt with in a timely and appropriate fashion. Credit risk is monitored and managed within the loan portfolio by the Company’s portfolio managers based on both the credit policy and a credit and portfolio review policy. This latter policy requires a program of financial data collection and analysis, thorough loan reviews, property and/or business inspections, monitoring of portfolio concentrations and trends, and incorporation of current business and economic conditions. The portfolio managers also monitor asset-based lines of credit, loan covenants, and other conditions associated with the Company’s business loans as a means to help identify potential credit risk. Most individual loans, excluding the homogeneous loan portfolio, are reviewed at least annually, including the assignment or confirmation of a risk grade. Risk grades are based on a six-grade Pass scale, along with Special Mention, Substandard, Doubtful, and Loss classifications, as such classifications are defined by the regulatory agencies. The assignment of risk grades allows the Company to, among other things, identify the risk associated with each credit in the portfolio and to provide a basis for estimating credit losses inherent in the portfolio. Risk grades are reviewed regularly with the Company’s Credit and Portfolio Review Committee, and the portfolio management and risk grading process is reviewed on an ongoing basis by an independent loan review function, as well as by regulatory agencies during scheduled examinations. The following provides brief definitions for risk grades assigned to loans in the portfolio: • Pass classifications represent assets with a level of credit quality, in which no well-defined deficiency or weakness exists. • Special Mention assets do not currently expose the Bank to a sufficient risk to warrant classification in one of the adverse categories, but possess correctable deficiencies or potential weaknesses deserving management’s close attention. • Substandard assets are inadequately protected by the current net worth and paying capacity of the obligor or of the collateral pledged, if any. These assets are characterized by the distinct possibility that the Bank will sustain some loss if the deficiencies are not corrected. OREO acquired from foreclosure is also classified as Substandard. • Doubtful credits have all the weaknesses inherent in Substandard credits, with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions, and values, highly questionable and improbable. • Loss assets are those that are considered uncollectible and of such little value that their continuance as assets is not warranted. Amounts classified as loss are promptly charged off. The Bank’s portfolio managers also manage loan performance risks, collections, workouts, bankruptcies, and foreclosures. A special department, whose portfolio managers have professional expertise in these areas, typically handles or advises on these types of matters. Loan performance risks are mitigated by our portfolio managers acting promptly and assertively to address problem credits when they are identified. Collection efforts commence immediately upon non-payment, and the portfolio managers seek to promptly determine the appropriate steps to minimize the Company’s risk of loss. When foreclosure will maximize the Company’s recovery for a non-performing loan, the portfolio managers will take appropriate action to initiate the foreclosure process. When a loan is graded as special mention, substandard, or doubtful, the Company obtains an updated valuation of the underlying collateral. If, through the Company’s credit risk management process, it is determined the ultimate repayment of a loan will come from the foreclosure upon and ultimate sale of the underlying collateral, the loan is deemed collateral dependent and evaluated individually to determine an appropriate ACL for the loan. The ACL for such loans is measured as the amount by which the fair value of the underlying collateral, less estimated costs to sell, is less than the amortized cost of the loan. The Company typically continues to obtain or confirm updated valuations of underlying collateral for special mention and classified loans on an annual or biennial basis in order to have the most current indication of fair value of the underlying collateral securing the loan. Additionally, once a loan is identified as collateral dependent, due to the likelihood of foreclosure, and repayment of the loan is expected to come from the eventual sale of the underlying collateral, an analysis of the underlying collateral is performed at least quarterly. Changes in the estimated fair value of the collateral are reflected in the lifetime ACL for the loan. Balances deemed to be uncollectable are promptly charged-off. The following table stratifies the loans held for investment portfolio by the Company’s internal risk grading, and by year of origination, as of September 30, 2021: Term Loans by Vintage (Dollars in thousands) 2021 2020 2019 2018 2017 Prior Revolving Revolving Converted to Term During the Period Total September 30, 2021 Investor loans secured by real estate CRE non-owner-occupied Pass $ 565,605 $ 268,733 $ 424,397 $ 462,395 $ 219,672 $ 823,208 $ 9,599 $ — $ 2,773,609 Special mention — — 16,263 1,943 — — — — 18,206 Substandard — — 25,775 — — 4,950 525 — 31,250 Multifamily Pass 1,694,447 1,012,346 1,348,563 526,744 501,849 619,628 218 — 5,703,795 Substandard — — — 543 556 772 — — 1,871 Construction and land Pass 86,107 125,190 51,733 22,134 3,996 3,607 48 — 292,815 SBA secured by real estate Pass 130 499 7,373 9,113 12,665 9,722 — — 39,502 Special mention — — — 962 — 548 — — 1,510 Substandard — — 9 2,353 3,170 2,902 — — 8,434 Total investor loans secured by real estate 2,346,289 1,406,768 1,874,113 1,026,187 741,908 1,465,337 10,390 — 8,870,992 Business loans secured by real estate CRE owner-occupied Pass 635,469 302,683 317,035 221,806 207,923 531,119 3,211 300 2,219,546 Special mention — — 6,078 1,741 — — — — 7,819 Substandard — — — 6,109 2,972 5,718 — — 14,799 Franchise real estate secured Pass 97,884 43,332 59,772 44,306 66,901 42,286 — — 354,481 SBA secured by real estate Pass 3,789 2,368 7,533 10,498 11,230 25,181 1,361 — 61,960 Special mention — — — — — 212 — — 212 Substandard — — — 1,326 3,000 3,439 — — 7,765 Total loans secured by business real estate 737,142 348,383 390,418 285,786 292,026 607,955 4,572 300 2,666,582 Term Loans by Vintage (Dollars in thousands) 2021 2020 2019 2018 2017 Prior Revolving Revolving Converted to Term During the Period Total September 30, 2021 Commercial loans Commercial and industrial Pass 260,359 89,545 204,683 139,560 156,915 78,951 906,369 2,059 1,838,441 Special mention — — 189 — — — 14,629 — 14,818 Substandard 650 1,759 552 2,854 867 1,570 26,619 740 35,611 Franchise non-real estate secured Pass 118,333 24,954 96,784 65,300 27,683 37,157 — — 370,211 Substandard — — 2,236 4,421 14,903 1,179 — — 22,739 SBA non-real estate secured Pass 152 653 1,424 938 3,239 3,567 — — 9,973 Special mention — — 698 117 — — — — 815 Substandard — — 78 338 247 617 664 — 1,944 Total commercial loans 379,494 116,911 306,644 213,528 203,854 123,041 948,281 2,799 2,294,552 Retail loans Single family residential Pass 20,201 3,518 1,967 1,633 6,954 86,711 23,274 — 144,258 Substandard — — — — — 51 — — 51 Consumer loans Pass 28 30 57 22 15 2,964 3,268 — 6,384 Substandard — — 6 — — 36 — — 42 Total retail loans 20,229 3,548 2,030 1,655 6,969 89,762 26,542 — 150,735 Totals gross loans $ 3,483,154 $ 1,875,610 $ 2,573,205 $ 1,527,156 $ 1,244,757 $ 2,286,095 $ 989,785 $ 3,099 $ 13,982,861 The following table stratifies the loans held for investment portfolio by the Company’s internal risk grading, and by year of origination, as of December 31, 2020: Term Loans by Vintage (Dollars in thousands) 2020 2019 2018 2017 2016 Prior Revolving Revolving Converted to Term During the Period Total December 31, 2020 Investor loans secured by real estate CRE non-owner-occupied Pass $ 265,901 $ 541,994 $ 440,351 $ 287,580 $ 279,238 $ 791,477 $ 11,114 $ — $ 2,617,655 Special mention — — 6,669 437 2,516 29,738 — — 39,360 Substandard — 9,732 2,045 — 516 5,218 559 — 18,070 Multifamily Pass 1,027,644 1,677,716 899,123 665,939 354,859 531,287 420 — 5,156,988 Special mention — 1,758 2,630 — 8,649 — — — 13,037 Substandard — — — 559 772 — — — 1,331 Construction and land Pass 57,309 144,759 73,313 18,625 20,531 6,672 784 — 321,993 SBA secured by real estate Pass — 8,306 9,029 13,418 6,305 7,696 — — 44,754 Special mention 496 1,032 1,159 1,000 373 306 — — 4,366 Substandard — 1,220 2,959 1,091 400 2,541 — — 8,211 Total investor loans secured by real estate 1,351,350 2,386,517 1,437,278 988,649 674,159 1,374,935 12,877 — 8,225,765 Business loans secured by real estate CRE owner-occupied Pass 293,324 409,758 332,672 327,475 225,098 469,704 14,268 246 2,072,545 Special mention 2,190 15,917 3,802 — 4,153 201 — — 26,263 Substandard — — 3,636 4,214 1,169 5,973 250 — 15,242 Franchise real estate secured Pass 44,413 81,438 66,241 96,999 24,673 27,020 — — 340,784 Special mention 878 1,650 2,652 — — — — — 5,180 Substandard — — — — 1,968 — — — 1,968 SBA secured by real estate Pass 3,253 7,637 12,608 16,058 8,488 23,624 — — 71,668 Special mention — — 1,200 — 137 — — — 1,337 Substandard — — 184 1,987 1,376 3,043 — — 6,590 Total loans secured by business real estate 344,058 516,400 422,995 446,733 267,062 529,565 14,518 246 2,541,577 Term Loans by Vintage (Dollars in thousands) 2020 2019 2018 2017 2016 Prior Revolving Revolving Converted to Term During the Period Total December 31, 2020 Commercial loans Commercial and industrial Pass 127,082 260,368 159,001 210,163 51,800 82,291 801,752 9,315 1,701,772 Special mention 735 — 2,331 185 1,320 243 17,890 37 22,741 Substandard — 3,310 2,737 610 1,333 2,446 32,858 1,027 44,321 Franchise non-real estate secured Pass 27,607 164,025 94,494 46,174 40,829 27,745 1,361 502 402,737 Special mention — 7,267 2,037 230 480 2,321 — — 12,335 Substandard — 6,690 3,706 18,425 700 204 — — 29,725 SBA non-real estate secured Pass 407 2,257 1,558 2,674 610 4,449 — 259 12,214 Special mention — — — 1,574 — — — — 1,574 Substandard — 83 357 282 340 400 707 — 2,169 Total commercial loans 155,831 444,000 266,221 280,317 97,412 120,099 854,568 11,140 2,229,588 Retail loans Single family residential Pass 10,794 7,714 13,982 14,039 33,968 124,248 27,172 — 231,917 Substandard — — — — — 657 — — 657 Consumer loans Pass 52 112 37 25 2 3,145 3,508 — 6,881 Substandard — 7 — — — 41 — — 48 Total retail loans 10,846 7,833 14,019 14,064 33,970 128,091 30,680 — 239,503 Totals gross loans $ 1,862,085 $ 3,354,750 $ 2,140,513 $ 1,729,763 $ 1,072,603 $ 2,152,690 $ 912,643 $ 11,386 $ 13,236,433 The following tables stratify loans held for investment by delinquencies in the Company’s loan portfolio at the dates indicated: Days Past Due (Dollars in thousands) Current 30-59 60-89 90+ Total September 30, 2021 Investor loans secured by real estate CRE non-owner-occupied $ 2,812,797 $ — $ — $ 10,268 $ 2,823,065 Multifamily 5,705,666 — — — 5,705,666 Construction and land 292,815 — — — 292,815 SBA secured by real estate 48,470 — 629 347 49,446 Total investor loans secured by real estate 8,859,748 — 629 10,615 8,870,992 Business loans secured by real estate CRE owner-occupied 2,237,186 — — 4,978 2,242,164 Franchise real estate secured 354,481 — — — 354,481 SBA secured by real estate 69,496 — — 441 69,937 Total business loans secured by real estate 2,661,163 — — 5,419 2,666,582 Commercial loans Commercial and industrial 1,886,386 654 14 1,816 1,888,870 Franchise non-real estate secured 392,950 — — — 392,950 SBA not secured by real estate 11,701 74 293 664 12,732 Total commercial loans 2,291,037 728 307 2,480 2,294,552 Retail loans Single family residential 144,309 — — — 144,309 Consumer loans 6,426 — — — 6,426 Total retail loans 150,735 — — — 150,735 Totals $ 13,962,683 $ 728 $ 936 $ 18,514 $ 13,982,861 Days Past Due (Dollars in thousands) Current 30-59 60-89 90+ Total Gross Loans December 31, 2020 Investor loans secured by real estate CRE non-owner-occupied $ 2,674,328 $ — $ — $ 757 $ 2,675,085 Multifamily 5,171,355 1 — — 5,171,356 Construction and land 321,993 — — — 321,993 SBA secured by real estate 56,074 — — 1,257 57,331 Total investor loans secured by real estate 8,223,750 1 — 2,014 8,225,765 Business loans secured by real estate CRE owner-occupied 2,108,746 — — 5,304 2,114,050 Franchise real estate secured 347,932 — — — 347,932 SBA secured by real estate 78,036 486 — 1,073 79,595 Total business loans secured by real estate 2,534,714 486 — 6,377 2,541,577 Commercial loans Commercial and industrial 1,765,451 428 57 2,898 1,768,834 Franchise non-real estate secured 444,797 — — — 444,797 SBA not secured by real estate 14,912 338 — 707 15,957 Total commercial loans 2,225,160 766 57 3,605 2,229,588 Retail loans Single family residential 232,559 15 — — 232,574 Consumer loans 6,928 1 — — 6,929 Total retail loans 239,487 16 — — 239,503 Totals $ 13,223,111 $ 1,269 $ 57 $ 11,996 $ 13,236,433 Individually Evaluated Loans Beginning on January 1, 2020, the Company evaluates loans collectively for purposes of determining the ACL in accordance with ASC 326. Collective evaluation is based on aggregating loans deemed to possess similar risk characteristics. In certain instances the Company may identify loans that it believes no longer possess risk characteristics similar to other loans in the portfolio. These loans are typically identified from a substandard or worse internal risk grade, since the specific attributes and risks associated with such loans tend to become unique as the credit deteriorates. Such loans are typically nonperforming, modified through a TDR, and/or are deemed collateral dependent, where the ultimate repayment of the loan is expected to come from the operation of or eventual sale of the collateral. Loans that are deemed by management to no longer possess risk characteristics similar to other loans in the portfolio are evaluated individually for purposes of determining an appropriate lifetime ACL. The Company uses a discounted cash flow approach, using the loan’s effective interest rate, for determining the ACL on individually evaluated loans, unless the loan is deemed collateral dependent, which requires evaluation based on the estimated fair value of the underlying collateral, less estimated costs to sell. The Company may increase or decrease the ACL for collateral dependent individually evaluated loans based on changes in the estimated expected fair value of the collateral. Changes in the ACL for all other individually evaluated loans is based substantially on the Company’s evaluation of cash flows expected to be received from such loans. As of September 30, 2021, $35.1 million of loans were individually evaluated with $571,000 ACL attributed to such loans. At September 30, 2021, $12.8 million of individually evaluated loans were evaluated using a discounted cash flow approach and $22.3 million of individually evaluated loans were evaluated based on the underlying value of the collateral. As of December 31, 2020, $29.2 million of loans were individually evaluated, and the ACL attributed to such loans totaled $126,000. At December 31, 2020, $15.2 million of individually evaluated loans were evaluated using a discounted cash flow approach and $14.0 million of individually evaluated loans were evaluated based on the underlying value of the collateral. The Company had individually evaluated loans on nonaccrual status of $35.1 million and $29.2 million at September 30, 2021 and December 31, 2020, respectively. Troubled Debt Restructurings We sometimes modify or restructure loans when the borrower is experiencing financial difficulties by making a concession to the borrower in the form of changes in the amortization terms, reductions in the interest rates, the acceptance of interest-only payments, and, in limited cases, concessions to the outstanding loan balances. These loans are classified as TDRs. TDRs are loans modified for the purpose of alleviating temporary impairments to the borrower’s financial condition or cash flows. A workout plan between us and the borrower is designed to provide a bridge for borrower cash flow shortfalls in the near term. In most cases, the Company initially places TDRs on nonaccrual status, and they may return to accrual status when the loans are brought current, have performed in accordance with the contractual restructured terms for a period of at least six months, and the ultimate collectability of the total contractual restructured principal and interest payments are no longer in doubt. At September 30, 2021, there were $17.6 million loans classified as TDRs, compared with no TDR loans as of December 31, 2020. During the three and nine months ended September 30, 2021, there were six loans totaling $17.6 million modified as TDRs, which are comprised of three CRE owner-occupied loans and one C&I loan totaling $5.2 million belonging to one borrower relationship with the terms modified due to bankruptcy, and two franchise non-real estate secured loans totaling $12.3 million belonging to another borrower relationship with the terms modified for payment deferral. During the three and nine months ended September 30, 2021, the three CRE owner-occupied loans and one C&I loan classified as TDRs were in payment default and all TDRs were on nonaccrual status as of September 30, 2021. During the three and nine months ended September 30, 2020, there were no TDRs that experienced payment defaults after modifications within the previous 12 months. The CARES Act, signed into law on March 27, 2020, permits financial institutions to suspend requirements under GAAP for loan modifications to borrowers affected by COVID-19 that would otherwise be characterized as TDRs and suspend any determination related thereto if (i) the loan modification is made between March 1, 2020 and the earlier of December 31, 2020 or 60 days after the end of the coronavirus emergency declaration and (ii) the applicable loan was not more than 30 days past due as of December 31, 2019. On April 7, 2020, federal bank regulators issued a joint interagency statement that allowed lenders to conclude that a borrower is not experiencing financial difficulty if short-term (e.g., six months or less) modifications are made in response to the COVID-19 pandemic, such as payment deferrals, fee waivers, extensions of repayment terms, or other delays in payment that are insignificant related to loans in which the borrower is less than 30 days past due on its contractual payments at the time a modification program is implemented. The CAA, signed into law on December 27, 2020, extended the applicable period to include modification to loans held by financial institutions executed between March 1, 2020 and the earlier of (i) January 1, 2022, or (ii) 60 days after the date of termination of the COVID-19 national emergency. For COVID-19 related loan modifications in the form of payment deferrals, the delinquency status will not advance and loans that were accruing at the time that the relief is provided will generally not be placed on nonaccrual status during the deferral period. Interest income will continue to be recognized over the contractual life of the loan. However, the Company, through its credit portfolio management activities, has continued to monitor facts and circumstances associated with the underlying credit quality of loans modified under the provisions of the CARES Act in an effort to identify any loans where the accrual of interest during the modification period is no longer appropriate. In such cases, the Company ceases the accrual of interest and all previously accrued and uncollected interest is promptly reversed against current period interest income. At September 30, 2021, no loans were classified as a COVID-19 modification under Section 4013 of the CARES Act and no loans were in-process for potential modification. At December 31, 2020, 52 loans totaling $79.5 million, or 0.60% of loans held for investment, remained within their COVID-19 modification period. Purchased Credit Deteriorated Loans Following the adoption of ASC 326 on January 1, 2020, the Company analyzed acquired loans for more-than-insignificant deterioration in credit quality since their origination. Such loans are classified as purchased credit deteriorated loans. Please see Note 3 - Significant Accounting Policies for more information concerning the accounting for PCD loans. The Company accounts for interest income on PCD loans using the interest method, whereby any purchase discounts or premiums are accreted or amortized into interest income as an adjustment of the loan’s yield. Acquired loans classified as PCD are recorded at an initial amortized cost, which is comprised of the purchase price of the loans (or initial fair value) and the initial ACL determined for the loans, which is added to the purchase price, as well as any resulting discount or premium related to factors other than credit. Subsequent to acquisition, the ACL for PCD loans is measured in accordance with the Company’s ACL methodology. Please also see Note 7 - Allowance for Credit Losses for more information concerning the Company’s ACL methodology. Nonaccrual Loans When loans are placed on nonaccrual status, previously accrued but unpaid interest is promptly reversed from earnings. Payments received on nonaccrual loans are generally applied as a reduction to the loan principal balance. If the likelihood of further loss is remote, the Company will recognize interest on a cash basis only. Generally, the Company may return a loan to accruing status if all past due principal and interest have been collected and the Company expects repayment of the remaining contractual amounts on the loan. In some cases, the Company may require a sustained period of performance from the borrower, such as three consecutive payments, before returning a loan to accruing status. The Company may also return a loan to accruing status when it becomes well secured and in the process of collection. The Company typically does not accrue interest on loans 90 days or more past due or when, in the opinion of management, there is reasonable doubt as to the timely collection of principal or interest. However, when such loans are well secured and in the process of collection, the Company may continue accruing interest. The Company had no loans 90 days or more past due and still accruing at September 30, 2021 and December 31, 2020, respectively. Nonaccrual loans totaled $35.1 million at September 30, 2021 and $29.2 million as of December 31, 2020. No interest income was recognized on nonaccrual loans during the three and nine months ended September 30, 2021 and September 30, 2020. The following tables provide a summary of nonaccrual loans as of the dates indicated: Nonaccrual Loans (1) (Dollars in thousands) Collateral Dependent Loans ACL Non-Collateral Dependent Loans ACL Total Nonaccrual Loans Nonaccrual Loans with No ACL September 30, 2021 Investor loans secured by real estate CRE non-owner-occupied $ 12,179 $ 571 $ — $ — $ 12,179 $ 4,563 SBA secured

Allowance for Credit Losses

Allowance for Credit Losses	9 Months Ended
	Sep. 30, 2021
Provision for Loan and Lease Losses [Abstract]
Allowance for Credit Losses	Allowance for Credit Losses The Company determines the ACL for loans and unfunded loan commitments in accordance with ASC 326 - Financial Instruments - Credit Losses . ASC 326 requires the Company to recognize estimates for lifetime credit losses on loans and unfunded loan commitments at the time of origination or acquisition. The recognition of losses at origination or acquisition represents the Company’s best estimate of lifetime expected credit losses, given the facts and circumstances associated with a particular loan or group of loans with similar risk characteristics. Determining the ACL involves the use of significant management judgement and estimates, which are subject to change based on management’s ongoing assessment of the credit quality of the loan portfolio and changes in economic forecasts used in the model. The Company uses a discounted cash flow model when determining estimates for the ACL for commercial real estate loans and commercial loans, which comprise the majority of the loan portfolio, and uses a historical loss rate model for retail loans. The Company also utilizes proxy loan data in its ACL model where the Company’s own historical data is not sufficiently available. The discounted cash flow model is applied on an instrument-by-instrument basis, and for loans with similar risk characteristics, to derive estimates for the lifetime ACL for each loan. The discounted cash flow methodology relies on several significant components essential to the development of estimates for future cash flows on loans and unfunded commitments. These components consist of: (i) the estimated probability of default, (ii) the estimated loss given default, which represents the estimated severity of the loss when a loan is in default, (iii) estimates for prepayment activity on loans, and (iv) the estimated exposure to the Company at default (“EAD”). These components are also heavily influenced by changes in economic forecasts employed in the model over a reasonable and supportable period. The Company’s ACL methodology for unfunded loan commitments also includes assumptions concerning the probability an unfunded commitment will be drawn upon by the borrower. These assumptions are based on the Company’s historical experience. The Company’s discounted cash flow ACL model for commercial real estate and commercial loans uses internally derived estimates for prepayments in determining the amount and timing of future contractual cash flows to be collected. The estimate of future cash flows also incorporates estimates for contractual amounts the Company believes may not be collected, which are based on assumptions for PD, LGD, and EAD. EAD is the estimated outstanding balance of the loan at the time of default. It is determined by the contractual payment schedule and expected payment profile of the loan, incorporating estimates for expected prepayments and future draws on revolving credit facilities. The Company discounts cash flows using the effective interest rate on the loan. The effective interest rate represents the contractual rate on the loan; adjusted for any purchase premiums, purchase discounts, and deferred fees and costs associated with an originated loan. The Company has made an accounting policy election to adjust the effective interest rate to take into consideration the effects of estimated prepayments. The ACL for term loans is determined by measuring the amount by which a loan’s amortized cost exceeds its discounted cash flows expected to be collected. The ACL for credit facilities is determined by discounting estimates for cash flows not expected to be collected. Probability of Default The PD for investor loans secured by real estate is based largely on a model provided by a third party, using proxy loan information. The PDs generated by this model are reflective of current and expected economic conditions and conditions in the commercial real estate market, and how they are expected to impact loan level and property level attributes, and ultimately the likelihood of a default event occurring. This model also incorporates assumptions for PD at a loan’s maturity. Significant loan and property level attributes include: loan to value ratios, debt service coverage, loan size, loan vintage, and property types. The PD for business loans secured by real estate and commercial loans is based on an internally developed PD rating scale that assigns PDs based on the Company’s internal risk grades for loans. This internally developed PD rating scale is based on a combination of the Company’s own historical data and observed historical data from the Company’s peers, which consist of banks that management believes align with our business profile. As credit risk grades change for these loans, the PD assigned to them also changes. As with investor loans secured by real estate, the PD for business loans secured by real estate and commercial loans is also impacted by current and expected economic conditions. The Company considers loans to be in default when they are 90 days or more past due and still accruing or placed on nonaccrual status. Loss Given Default LGDs for commercial real estate loans are derived from a third party, using proxy loan information, and are based on loan and property level characteristics in the Company’s loan portfolio, such as: loan to values, estimated time to resolution, property size, and current and estimated future market price changes for underlying collateral. The LGD is highly dependent upon loan to value ratios, and incorporates estimates for the expense associated with managing the loan through to resolution. LGDs also incorporate an estimate for the loss severity associated with loans where the borrower fails to meet their debt obligation at maturity, such as through a balloon payment or the refinancing of the loan through another lender. External factors that have an impact on LGDs include: changes in the index for CRE pricing, GDP growth rate, unemployment rates, and the Moody’s Baa rating corporate debt interest rate spread. LGDs are applied to each loan in the commercial real estate portfolio, and in conjunction with the PD, produce estimates for net cash flows not expected to be collected over the estimated term of the loan. LGDs for commercial loans are also derived from a third party that has a considerable database of credit related information specific to the financial services industry and the type of loans within this segment, and is used to generate annual default information for commercial loans. These proxy LGDs are dependent upon data inputs such as: credit quality, borrower industry, region, borrower size, and debt seniority. LGDs are then applied to each loan in the commercial portfolio, and in conjunction with the PD, produce estimates for net cash flows not expected to be collected over the estimated term of the loan. Historical Loss Rates for Retail Loans The historical loss rate model for retail loans are derived from a third party that has a considerable database of credit related information for retail loans. Key loan level attributes and economic drivers in determining the loss rate for retail loans include FICO scores, vintage, as well as geography, unemployment rates, and changes in consumer real estate prices. Forecasts GAAP requires the Company to develop reasonable and supportable forecasts of future conditions, and estimate how those forecasts are expected to impact a borrower’s ability to satisfy their obligation to the Bank and the ultimate collectability of future cash flows over the life of a loan. The Company uses economic scenarios from an independent third party, Moody’s Analytics. These scenarios are based on past events, current conditions, and the likelihood of future events occurring. These scenarios typically are comprised of: (1) a base-case scenario, (2) an upside scenario, representing slightly better economic conditions than currently experienced, and (3) a downside scenario, representing recessionary conditions. Management periodically evaluates economic scenarios and may decide that a particular economic scenario or a combination of probability-weighted economic scenarios should be used in the Company’s ACL model. The economic scenarios chosen for the model, the extent to which more than one scenario is used, and the weights that are assigned to them, are based on the Company’s estimate of the probability of each scenario occurring, which is based in part on analysis performed by an independent third-party. Economic scenarios chosen, as well as the assumptions within those scenarios, and whether to use a probability-weighted multiple scenario approach, can vary from one period to the next based on changes in current and expected economic conditions, and due to the occurrence of specific events such as the ongoing COVID-19 pandemic. The Company recognizes the non-linearity of credit losses relative to economic performance and thus the Company believes consideration of, and if appropriate under the circumstances, use of multiple probability-weighted economic scenarios is appropriate in estimating credit losses over the forecast period. This approach is based on certain assumptions. The first assumption is that no single forecast of the economy, however detailed or complex, is completely accurate over a reasonable forecast time-frame, and is subject to revisions over time. By considering multiple scenario outcomes and assigning reasonable probability weightings to them, some of the uncertainty associated with a single scenario approach, the Company believes, is mitigated. As of September 30, 2021, the Company’s ACL model used three probability-weighted scenarios representing a base-case scenario, an upside scenario, and a downside scenario. The weightings assigned to each scenario were as follows: the base-case scenario, or most likely scenario, was assigned a weighting of 40%, while the upside and downside scenarios were each assigned a weighting of 30%. These economic scenarios include the current and estimated future impact associated with the ongoing COVID-19 pandemic. The Company evaluated the weightings of each economic scenario in the current period with the assistance of Moody's Analytics, and determined the current weightings of 40% for the base-case scenario, and 30% for each of the upside and downside scenarios appropriately reflect the likelihood of outcomes for each scenario given the current economic environment. The use of three probability-weighted scenarios at September 30, 2021 and the weighting assigned to each scenario is consistent with the approach used in the Company’s ACL model at June 30, 2021 and December 31, 2020. The Company, with the assistance of Moody’s Analytics, currently forecasts PDs and LGDs based on economic scenarios over a two-year period, which we believe is a reasonable and supportable period. Beyond this point, PDs and LGDs revert to their long-term averages. The Company has reflected this reversion over a period of three years in each of its economic scenarios used to generate the overall probability-weighted forecast. Changes in economic forecasts impact the PD, LGD, and EAD for each loan, and therefore influence the amount of future cash flows for each loan the Company does not expect to collect. The Company derives the economic forecasts it uses in its ACL model from Moody's Analytics that has a large team of economists, database managers, and operational engineers with a long history of producing monthly economic forecasts. The forecasts produced by this third-party have been widely used by banks, credit unions, government agencies, and real estate developers. These economic forecasts cover all states and metropolitan areas in the Unites States, and reflect changes in economic variables such as: GDP growth, interest rates, employment rates, changes in wages, retail sales, industrial production, metrics associated with the single-family and multifamily housing markets, vacancy rates, changes in equity market prices, and energy markets. It is important to note that the Company’s ACL model relies on multiple economic variables, which are used under several economic scenarios. Although no one economic variable can fully demonstrate the sensitivity of the ACL calculation to changes in the economic variables used in the model, the Company has identified certain economic variables that have significant influence in the Company’s model for determining the ACL. As of September 30, 2021, the Company’s ACL model incorporated the following assumptions for key economic variables in the base-case, upside, and downside scenarios: Base-case Scenario: • U.S. unemployment declines to approximately 4.5% by the end of 2021. Unemployment continues to decline in 2022 to approximately 3.4% by the end of 2022. The rate of unemployment holds relatively constant at approximately 3.5% throughout 2023. • U.S. real GDP experiences annualized growth of approximately 7% through the remainder of 2021. Growth in real GDP for 2022 under this scenario decelerates from an annualized rate of approximately 5% in early 2022 to approximately 1% by the end of 2022. Annualized real GDP growth of approximately 2-3% in 2023. • CRE index experiences a slight decline throughout the remainder of 2021, with an annualized rate of decline of approximately -2% for 2021. The CRE index returns to moderate levels of growth beginning in the first quarter of 2022, with the annualized rate of growth increasing from 2% in early 2022 to 11% by the end of 2022. The CRE index is anticipated to increase approximately 7-9% on an annualized basis in 2023. Upside Scenario: • U.S. unemployment declines to approximately 4.3% by the end of 2021. The unemployment rates holds at approximately 3% throughout all of 2022 and 2023. • U.S. real GDP experiences annualized growth of approximately 11% through the remainder of 2021. Growth in real GDP throughout 2022 decelerates from an annualized rate of approximately 7% in early 2022 to approximately 1% by the end of 2022. Annualized real GDP growth of approximately 1-2% in 2023. • CRE index remains relatively unchanged throughout the remainder of 2021. The CRE index returns growth in 2022, with the annualized rate of growth increasing from 5% in early 2022 to 14% by the end of 2022. The CRE index is anticipated to experience a decelerating annualized rate of growth from approximately 10% in early 2023 to approximately 7% by the end of 2023. Downside Scenario: • U.S. unemployment increases to approximately 6.7% by the end of 2021. Unemployment remains elevated in 2022 at approximately 8-9%. Unemployment declines throughout 2023 to approximately 6.8% at the end of 2023. • U.S. real GDP experiences a decline of approximately -3.5% for the remainder of 2021. Real GDP returns to modest annualized growth in the third quarter of 2022, with growth of approximately 1% for the remainder of 2022. Annualized real GDP fluctuates within a range of approximately 2-4% throughout 2023. • CRE index experiences an annualized rate of decline throughout the remainder 2021 of approximately -5%. The CRE index is estimated to experience decelerating declines throughout 2022, with the annualized rate of decline slowing from approximately -16% in early 2022 to approximately -11% by the end of 2022. Under this scenario, the CRE index is anticipated to experience accelerating annualized growth throughout 2023 to approximately 18% by the end of 2023. Qualitative Adjustments The Company recognizes that historical information used as the basis for determining future expected credit losses may not always, by themselves, provide a sufficient basis for determining future expected credit losses. The Company, therefore, periodically considers the need for qualitative adjustments to the ACL. Qualitative adjustments may be related to and include, but not be limited to, factors such as: (i) management’s assessment of economic forecasts used in the model and how those forecasts align with management’s overall evaluation of current and expected economic conditions, (ii) organization specific risks such as credit concentrations, collateral specific risks, regulatory risks, and external factors that may ultimately impact credit quality, (iii) potential model limitations such as limitations identified through back-testing, and other limitations associated with factors such as underwriting changes, acquisition of new portfolios and changes in portfolio segmentation, and (iv) management’s overall assessment of the adequacy of the ACL, including an assessment of model data inputs used to determine the ACL. As of September 30, 2021, qualitative adjustments included in the ACL totaled $6.5 million. These adjustments primarily relate to continued uncertainty concerning the strength of the economic recovery and how it may impact certain classes of loans in the loan portfolio. Management determined through additional review that the uneven recovery and continued government interventions are potentially underestimating the impact the ongoing COVID-19 pandemic may have on certain segments and classes of the loan portfolio, such as loans within the SBA, construction, franchise, and CRE owner-occupied classifications. Management reviews the need for an appropriate level of qualitative adjustments on a quarterly basis, and as such, the amount and allocation of qualitative adjustments may change in future periods. The following tables provides the allocation of the ACL for loans held for investment as well as the activity in the ACL attributed to various segments in the loan portfolio as of, and for the periods indicated: Three Months Ended September 30, 2021 (Dollars in thousands) Beginning ACL Balance Charge-offs Recoveries Provision for Credit Losses Ending Investor loans secured by real estate CRE non-owner occupied $ 47,112 $ — $ — $ (4,645) $ 42,467 Multifamily 59,059 — — (6,895) 52,164 Construction and land 9,548 — — (1,531) 8,017 SBA secured by real estate 4,681 (158) — (644) 3,879 Business loans secured by real estate CRE owner-occupied 35,747 — 14 (2,082) 33,679 Franchise real estate secured 11,436 — — (1,810) 9,626 SBA secured by real estate 6,317 — 50 (1,263) 5,104 Commercial loans Commercial and industrial 39,879 (84) 729 (2,929) 37,595 Franchise non-real estate secured 17,313 (2,398) 80 2,523 17,518 SBA non-real estate secured 730 — 15 (113) 632 Retail loans Single family residential 670 — 2 (143) 529 Consumer loans 282 — — (11) 271 Totals $ 232,774 $ (2,640) $ 890 $ (19,543) $ 211,481 Nine Months Ended September 30, 2021 (Dollars in thousands) Beginning ACL Balance Charge-offs Recoveries Provision for Credit Losses Ending Investor loans secured by real estate CRE non-owner occupied $ 49,176 $ (154) $ — $ (6,555) $ 42,467 Multifamily 62,534 — — (10,370) 52,164 Construction and land 12,435 — — (4,418) 8,017 SBA secured by real estate 5,159 (423) — (857) 3,879 Business loans secured by real estate CRE owner-occupied 50,517 — 44 (16,882) 33,679 Franchise real estate secured 11,451 — — (1,825) 9,626 SBA secured by real estate 6,567 (98) 130 (1,495) 5,104 Commercial loans Commercial and industrial 46,964 (4,653) 3,428 (8,144) 37,595 Franchise non-real estate secured 20,525 (2,554) 80 (533) 17,518 SBA non-real estate secured 995 — 19 (382) 632 Retail loans Single family residential 1,204 — 3 (678) 529 Consumer loans 491 — — (220) 271 Totals $ 268,018 $ (7,882) $ 3,704 $ (52,359) $ 211,481 Three Months Ended September 30, 2020 (Dollars in thousands) Beginning ACL Balance Charge-offs Recoveries Provision for Credit Losses Ending Investor loans secured by real estate CRE non-owner occupied $ 63,007 $ (443) $ — $ (8,459) $ 54,105 Multifamily 63,511 — — 3,825 67,336 Construction and land 18,804 (377) — (2,870) 15,557 SBA secured by real estate 2,010 (145) 34 3,428 5,327 Business loans secured by real estate CRE owner-occupied 48,213 (1,739) 21 2,171 48,666 Franchise real estate secured 13,060 — — (1,072) 11,988 SBA secured by real estate 4,368 — 76 1,716 6,160 Commercial loans Commercial and industrial 41,967 (2,437) 10 8,374 47,914 Franchise non-real estate secured 21,676 (207) 865 (2,185) 20,149 SBA non-real estate secured 600 (10) 8 353 951 Retail loans Single family residential 1,479 — 2 (238) 1,243 Consumer loans 3,576 (129) 1 (341) 3,107 Totals $ 282,271 $ (5,487) $ 1,017 $ 4,702 $ 282,503 Nine Months Ended September 30, 2020 (Dollars in thousands) Beginning ACL Balance (1) Adoption of ASC 326 Initial ACL Recorded for PCD Loans Charge-offs Recoveries Provision for Credit Losses Ending Investor loans secured by real estate CRE non-owner occupied $ 1,899 $ 8,423 $ 3,025 $ (830) $ — $ 41,588 $ 54,105 Multifamily 729 9,174 8,710 — — 48,723 67,336 Construction and land 4,484 (124) 2,051 (377) — 9,523 15,557 SBA secured by real estate 1,915 (1,401) — (699) 34 5,478 5,327 Business loans secured by real estate CRE owner-occupied 2,781 20,166 3,766 (1,739) 44 23,648 48,666 Franchise real estate secured 592 5,199 — — — 6,197 11,988 SBA secured by real estate 2,119 2,207 235 (315) 147 1,767 6,160 Commercial loans Commercial and industrial 13,857 87 2,325 (5,213) 37 36,821 47,914 Franchise non-real estate secured 5,816 9,214 — (1,434) 865 5,688 20,149 SBA non-real estate secured 445 218 924 (803) 13 154 951 Retail loans Single family residential 655 541 206 (62) 3 (100) 1,243 Consumer loans 406 1,982 — (137) 2 854 3,107 Totals $ 35,698 $ 55,686 $ 21,242 $ (11,609) $ 1,145 $ 180,341 $ 282,503 ______________________________ (1) Beginning ACL balance represents the ALLL accounted for under ASC 450 and ASC 310, which is reflective of probable incurred losses as of the balance sheet date. The decrease in the ACL for loans held for investment during the three months ended September 30, 2021 of $21.3 million was comprised of a $19.5 million provision recapture and $1.8 million in net charge-offs. The provision recapture for the three months ended September 30, 2021 was reflective of improving economic forecasts employed in the Company’s ACL model relative to prior periods and the favorable asset quality profile of the loan portfolio, partially offset by an increase in loans held for investment during the quarter. The decrease in the ACL for the nine months ended September 30, 2021 of $56.5 million was comprised of a $52.4 million provision recapture and $4.2 million in net charge-offs. The provision recapture for the nine months ended September 30, 2021 was also reflective of improving economic forecasts employed in the Company’s ACL model and the favorable asset quality profile of the loan portfolio, partially offset by an increase in loans held for investment during the first nine months of 2021. The increase in the ACL for the three months ended September 30, 2020 of $232,000 was comprised of a $4.7 million provision for credit losses and $4.5 million in net charge-offs. The provision for credit losses for the three months ended September 30, 2020 was reflective of unfavorable, but improving economic forecasts used in the Company’s ACL model. The increase in the ACL for the nine months ended September 30, 2020 of $246.8 million was reflective of a $55.7 million addition associated with the Company’s adoption of ASC 326 on January 1, 2020, which was recorded through a cumulative effect adjustment to retained earnings, as well as a $180.3 million provision for credit losses on loans, net charge-offs of $10.5 million, and the establishment of $21.2 million in net ACL for PCD loans previously mentioned. The provision for credit losses of $180.3 million during the nine months ended September 30, 2020 was inclusive of $75.9 million related to the initial ACL required for the acquisition of non-PCD loans in the Opus acquisition. Under ASC 326, the Company is required to record an ACL for estimates of life-time credit losses on loans at the time of acquisition. For non-PCD loans, the initial ACL is established through a charge to provision for credit losses at the time of acquisition. However, the ACL for PCD loans is established through an adjustment to the loan’s purchase price (or initial fair value). Excluding the impact of the Opus acquisition, the provision for credit losses for the nine months ended September 30, 2020 is also reflective of unfavorable economic forecasts used in the Company’s ACL model driven by the COVID-19 pandemic. Allowance for Credit Losses for Off-Balance Sheet Commitments The Company maintains an ACL on off-balance sheet commitments related to unfunded loans and lines of credit, which is included in other liabilities of the consolidated statements of financial condition. The allowance for off-balance sheet commitments was $27.2 million at September 30, 2021, $27.4 million at June 30, 2021, and $31.1 million at December 31, 2020. The provision recapture for off-balance sheet commitments of $194,000 and $3.9 million during the three and nine months ended September 30, 2021, respectively, was related primarily to improving economic conditions and forecasts reflected in the Company’s ACL model. The Company recorded a provision recapture for off-balance sheet commitments of $492,000 and a provision for credit losses of $10.0 million for the three and nine months ended September 30, 2020, respectively. The provision recapture for off-balance sheet commitments for the three months ended September 30, 2020 can be attributed to lower outstanding unfunded balances in certain loan segments where a higher reserve allocation had been assigned. The provision for credit losses on off-balance sheet commitments for the nine months ended September 30, 2020 can be attributed to an $8.6 million provision for credit losses in the second quarter of 2020 related to the initial ACL for off-balance sheet loan commitments that the Company was required to establish at the time of acquisition of Opus, and a $1.4 million in provision for credit losses for the first nine months of 2020 related primarily to the deterioration in economic forecasts, primarily in the second quarter of 2020, used in the Company’s CECL model. The Company applies an expected credit loss estimation methodology for off-balance sheet commitments that is largely commensurate with the methodology applied to each respective segment of the loan portfolio in determining the ACL for loans held-for-investment. The loss estimation process includes assumptions for utilization at default. These assumptions are based on the Company’s own historical internal loan data. The following tables present PD bands for commercial real estate and commercial loan segments of the loan portfolio as of the dates indicated. Commercial Real Estate and Commercial Term Loans by PD and Vintage (Dollars in thousands) 2021 2020 2019 2018 2017 Prior Revolving Revolving Converted to Term During the Period Total September 30, 2021 Investor loans secured by real estate CRE non-owner-occupied 0% - 5.00% $ 530,275 $ 239,267 $ 392,557 $ 421,922 $ 198,651 $ 722,951 $ 4,270 $ — $ 2,509,893 >5.00% - 10.00% 35,330 24,645 23,757 9,755 11,088 53,696 5,329 — 163,600 Greater than 10% — 4,821 50,121 32,661 9,933 51,511 525 — 149,572 Multifamily 0% - 5.00% 1,660,670 962,609 1,316,575 520,329 500,815 609,731 218 — 5,570,947 >5.00% - 10.00% 28,718 49,737 31,988 6,958 1,590 8,314 — — 127,305 Greater than 10% 5,059 — — — — 2,355 — — 7,414 Construction and Land 0% - 5.00% 56,187 82,557 2,329 991 3,996 3,607 48 — 149,715 >5.00% - 10.00% 21,654 11,027 1,700 — — — — — 34,381 Greater than 10% 8,266 31,606 47,704 21,143 — — — — 108,719 SBA secured by real estate 0% - 5.00% 130 499 7,373 12,428 15,206 12,834 — — 48,470 >5.00% - 10.00% — — — — — — — — — Greater than 10% — — 9 — 629 338 — — 976 Total investor loans secured by real estate 2,346,289 1,406,768 1,874,113 1,026,187 741,908 1,465,337 10,390 — 8,870,992 Business loans secured by real estate CRE owner-occupied 0% - 5.00% 635,469 302,683 315,267 215,974 201,190 499,308 3,211 300 2,173,402 >5.00% - 10.00% — — 7,846 7,573 6,733 31,811 — — 53,963 Greater than 10% — — — 6,109 2,972 5,718 — — 14,799 Franchise real estate secured 0% - 5.00% 95,937 43,332 55,621 39,053 61,591 37,696 — — 333,230 >5.00% - 10.00% 812 — 4,151 5,253 5,310 4,590 — — 20,116 Greater than 10% 1,135 — — — — — — — 1,135 SBA secured by real estate 0% - 5.00% 3,789 2,368 6,237 9,605 8,900 16,909 — — 47,808 >5.00% - 10.00% — — 1,296 893 2,318 8,273 — — 12,780 Greater than 10% — — — 1,326 3,012 3,650 1,361 — 9,349 Total business loans secured by real estate 737,142 348,383 390,418 285,786 292,026 607,955 4,572 300 2,666,582 Commercial Real Estate and Commercial Term Loans by PD and Vintage (Dollars in thousands) 2021 2020 2019 2018 2017 Prior Revolving Revolving Converted to Term During the Period Total September 30, 2021 Commercial loans Commercial and industrial 0% - 5.00% 253,639 87,252 196,671 118,678 128,879 69,707 764,279 2,055 1,621,160 >5.00% - 10.00% 6,720 2,293 8,012 20,835 27,760 8,438 140,001 4 214,063 Greater than 10% 650 1,759 741 2,901 1,143 2,376 43,337 740 53,647 Franchise non-real estate secured 0% - 5.00% 108,905 19,246 63,233 59,636 22,735 15,697 — — 289,452 >5.00% - 10.00% 9,159 5,708 33,550 5,594 3,483 18,536 — — 76,030 Greater than 10% 269 — 2,237 4,491 16,368 4,103 — — 27,468 SBA not secured by real estate 0% - 5.00% 152 653 1,215 633 1,008 2,421 — — 6,082 >5.00% - 10.00% — — 209 305 2,231 1,137 — — 3,882 Greater than 10% — — 776 455 247 626 664 — 2,768 Total commercial loans $ 379,494 $ 116,911 $ 306,644 $ 213,528 $ 203,854 $ 123,041 $ 948,281 $ 2,799 $ 2,294,552 Commercial Real Estate and Commercial Term Loans by PD and Vintage (Dollars in thousands) 2020 2019 2018 2017 2016 Prior Revolving Revolving Converted to Term During the Period Total December 31, 2020 Investor loans secured by real estate CRE non-owner-occupied 0% - 5.00% $ 261,885 $ 491,522 $ 431,791 $ 266,942 $ 254,527 $ 763,101 $ 11,114 $ — $ 2,480,882 >5.00% - 10.00% 4,016 34,360 5,794 10,558 16,961 33,734 — — 105,423 Greater than 10% — 25,844 11,480 10,517 10,782 29,598 559 — 88,780 Multifamily 0% - 5.00% 950,089 1,610,011 878,233 634,268 349,549 516,452 — — 4,938,602 >5.00% - 10.00% 38,892 59,500 12,181 19,751 10,917 13,606 — — 154,847 Greater than 10% 38,663 9,963 11,339 12,479 3,814 1,229 420 — 77,907 Construction and land 0% - 5.00% 55,785 40,860 4,604 11,238 — 6,412 784 — 119,683 >5.00% - 10.00% 1,123 41,046 9,197 3,601 — 260 — — 55,227 Greater than 10% 401 62,853 59,512 3,786 20,531 — — — 147,083 SBA secured by real estate 0% - 5.00% 496 10,400 12,558 14,497 7,078 10,032 — — 55,061 >5.00% - 10.00% — — — 1,012 — — — — 1,012 Greater than 10% — 158 589 — — 511 — — 1,258 Total investor loans secured by real estate 1,351,350 2,386,517 1,437,278 988,649 674,159 1,374,935 12,877 — 8,225,765 Commercial Real Estate and Commercial Term Loans by PD and Vintage (Dollars in thousands) 2020 2019 2018 2017 2016 Prior Revolving Revolving Converted to Term During the Period Total December 31, 2020 Business loans secured by real estate CRE owner-occupied 0% - 5.00% 286,745 367,269 274,512 295,809 202,282 422,614 10,393 246 1,859,870 >5.00% - 10.00% 8,769 42,310 60,222 28,421 23,875 44,855 3,875 — 212,327 Greater than 10% — 16,096 5,376 7,459 4,263 8,409 250 — 41,853 Franchise real estate secured 0% - 5.00% 37,262 79,926 65,619 96,672 19,046 22,927 — — 321,452 >5.00% - 10.00% 7,587 1,650 3,274 327 5,627 4,093 — — 22,558 Greater than 10% 442 1,512 — — 1,968 — — — 3,922 SBA secured by real estate 0% - 5.00% 3,253 7,637 11,840 15,069 5,707 18,742 — — 62,248 >5.00% - 10.00% — — 768 989 2,780 4,882 — — 9,419 Greater than 10% — — 1,384 1,987 1,514 3,043 — — 7,928 Total business loans secured by real estate 344,058 516,400 422,995 446,733 267,062 529,565 14,518 246 2,541,577 Commercial loans Commercial and industrial 0% - 5.00% 70,233 205,395 99,178 193,046 36,957 62,682 394,124 5,051 1,066,666 >5.00% - 10.00% 49,883 50,743 35,813 13,427 12,922 13,948 322,123 2,469 501,328 Greater than 10% 7,701 7,540 29,078 4,485 4,574 8,350 136,253 2,859 200,840 Franchise non-real estate secured 0% - 5.00% 21,409 145,392 88,171 38,010 21,956 23,479 — 502 338,919 >5.00% - 10.00% 6,198 15,754 5,454 8,164 18,415 3,626 — — 57,611 Greater than 10% — 16,836 6,612 18,655 1,638 3,165 1,361 — 48,267 SBA not secured by real estate 0% - 5.00% 407 2,257 910 1,078 441 2,782 — — 7,875 >5.00% - 10.00% — — 648 1,596 169 1,652 — 259 4,324 Greater than 10% — 83 357 1,856 340 415 707 — 3,758 Total commercial loans $ 155,831 $ 444,000 $ 266,221 $ 280,317 $ 97,412 $ 120,099 $ 854,568 $ 11,140 $ 2,229,588 A significant driver in the ACL for loans in the investor real estate secured and business real estate secured segments is estimated loan to

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	9 Months Ended
	Sep. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Goodwill and Other Intangible AssetsThe Company had goodwill of $901.3 million and $898.6 million at September 30, 2021 and December 31, 2020, respectively. The Company recorded adjustments to goodwill associated with the acquisition of Opus in the amount of $2.7 million during the first six months of 2021, within the one-year measurement period subsequent to the acquisition date of June 1, 2020. These adjustments largely relate to the finalization of the short-year Opus tax returns. During the nine months ended September 30, 2020, the additions to goodwill included $92.8 million associated with the acquisition of Opus and adjustments to goodwill in the amount of $2.7 million during the third quarter of 2020, within the one-year measurement period subsequent to the acquisition date. During the second quarter of 2021, the Company finalized its fair value analysis of the acquired assets and assumed liabilities associated with the Opus acquisition. September 30, September 30, (Dollars in thousands) 2021 2020 Balance, beginning of year $ 898,569 $ 808,322 Goodwill acquired during the year — 92,844 Purchase accounting adjustments 2,743 (2,732) Balance, end of year $ 901,312 $ 898,434 Accumulated impairment losses at end of year $ — $ — The Company’s policy is to assess goodwill for impairment on an annual basis during the fourth quarter of each year, and more frequently if events or circumstances lead management to believe the value of goodwill may be impaired. The Company had other intangible assets of $73.5 million at September 30, 2021, consisting of $70.7 million in core deposit intangibles and $2.8 million in customer relationship intangibles. The Company had other intangibles assets of $85.5 million at December 31, 2020, consisting of $82.5 million in core deposit intangibles and $3.0 million in customer relationship intangibles. The following table summarizes the change in the balance of core deposit intangibles and customer relationship intangibles, and the related accumulated amortization for the periods indicated below: Three Months Ended Nine Months Ended September 30, June 30, September 30, September 30, September 30, (Dollars in thousands) 2021 2021 2020 2021 2020 Gross amount of intangible assets: Beginning balance $ 145,212 $ 145,212 $ 145,212 $ 145,212 $ 125,945 Additions due to acquisitions — — — — 19,267 Ending balance 145,212 145,212 145,212 145,212 145,212 Accumulated amortization: Beginning balance (67,849) (63,848) (50,662) (59,705) (42,633) Amortization (3,912) (4,001) (4,538) (12,056) (12,567) Ending balance (71,761) (67,849) (55,200) (71,761) (55,200) Net intangible assets $ 73,451 $ 77,363 $ 90,012 $ 73,451 $ 90,012 The Company amortizes core deposit intangibles and customer relationship intangibles based on the projected useful lives of the related deposits in the case of core deposit intangibles, and over the projected useful lives of the related client relationships in the case of customer relationship intangibles. The amortization periods typically range from six

Subordinated Debentures

Subordinated Debentures	9 Months Ended
	Sep. 30, 2021
Debt Disclosure [Abstract]
Subordinated Debentures	Subordinated Debentures On April 15, 2021, the Company redeemed the subordinated notes totaling $25.0 million that the Company assumed as part of the acquisition of Plaza Bancorp, Inc. in 2017. Prior to redemption, such subordinated notes carried a fixed interest rate of 7.125% and were scheduled to mature on June 26, 2025. These subordinated notes were called at 103% of the principal amount of the notes, plus accrued and unpaid interest, for an aggregate amount of $25.8 million. The Company recorded a loss on early debt extinguishment of $647,000 after considering a $103,000 fair value mark related to purchase accounting adjustments. On July 1, 2021, the Company redeemed $135.0 million subordinated notes acquired from Opus and $5.2 million junior subordinated debt associated with Heritage Oaks Capital Trust II. Prior to redemption, the subordinated notes and junior subordinated debt securities carried an interest rate of 5.50% and 1.92%, respectively. On July 7, 2021, the Company redeemed $5.2 million junior subordinated debt associated with Santa Lucia Bancorp (CA) Capital Trust. Prior to redemption, the junior subordinated debt securities carried an interest rate of 1.66%. The subordinated notes and junior subordinated debt were redeemed at par, plus accrued and unpaid interest, for an aggregate amount of $149.2 million. The Company recorded a net gain on early debt extinguishment of $970,000 related to purchase accounting adjustments. Subsequent to the redemptions of these junior subordinated debt securities, the Company’s unconsolidated Delaware statutory trust subsidiaries, Heritage Oaks Capital Trust II and Santa Lucia Bancorp (CA) Capital Trust, that were used as business trusts for the purpose of issuing trust preferred securities to third party investors were dissolved. As of September 30, 2021, the Company had three issuances of subordinated notes with an aggregate carrying value of $330.4 million and a weighted interest rate of 5.33%, compared with five issuances of subordinated notes and two issuances of junior subordinated debt securities, with an aggregate carrying value of $501.5 million and a weighted interest rate of 5.38% at December 31, 2020. The following table summarizes our outstanding subordinated debentures as of the dates indicated: September 30, 2021 December 31, 2020 (Dollars in thousands) Stated Maturity Current Interest Rate Current Principal Balance Carrying Value Subordinated notes Subordinated notes due 2024, 5.75% per annum September 3, 2024 5.75 % $ 60,000 $ 59,641 $ 59,552 Subordinated notes due 2029, 4.875% per annum until May 15, 2024, 3-month LIBOR +2.5% thereafter May 15, 2029 4.875 % 125,000 123,068 122,877 Subordinated notes due 2030, 5.375% per annum until June 15, 2025, 3-month SOFR +5.170% thereafter June 15, 2030 5.375 % 150,000 147,699 147,501 Subordinated notes due 2025, 7.125% per annum June 26, 2025 — % — — 25,109 Subordinated notes due 2026, 5.50% per annum until June 30 2021, 3-month LIBOR +4.285% thereafter July 1, 2026 — % — — 138,371 Total subordinated notes 335,000 330,408 493,410 Subordinated debt Heritage Oaks Capital Trust II (junior subordinated debt), 3-month LIBOR+1.72% January 1, 2037 — % — — 4,121 Santa Lucia Bancorp (CA) Capital Trust (junior subordinated debt), 3-month LIBOR+1.48% July 7, 2036 — % — — 3,980 Total subordinated debt — — 8,101 Total subordinated debentures $ 335,000 $ 330,408 $ 501,511 In connection with the various issuances of subordinated notes, the Corporation obtained ratings from Kroll Bond Rating Agency (“KBRA”). KBRA assigned investment grade ratings of BBB+ and BBB for the Corporation’s senior unsecured debt and subordinated debt, respectively, and a deposit and senior unsecured debt rating of A- and subordinated debt of BBB+ for the Bank. The Corporation’s and Bank’s ratings were reaffirmed in June 2021 by KBRA. For additional information on the Company’s subordinated debentures, see “ Note 14 — Subordinated Debentures ” to the consolidated financial statements of the Company’s 2020 Form 10-K. For regulatory capital purposes, subordinated notes and the trust preferred securities qualify as Tier 2 capital. The redemption of subordinated notes totaling $25.0 million during the second quarter of 2021 reduced the Company’s Tier 2 capital by approximately $20.0 million. The redemption of subordinated notes and trust preferred securities totaling $145.4 million during the third quarter of 2021 reduced the Company’s Tier 2 capital by approximately $146.0 million. Following these redemptions, the regulatory total capital ratios of the Company and the Bank continued to exceed regulatory minimums to be well-capitalized and the fully phased-in capital conservation buffer.

Earnings per Share

Earnings per Share	9 Months Ended
	Sep. 30, 2021
Earnings Per Share [Abstract]
Earnings per Share	Earnings per Share The Company’s restricted stock awards contain non-forfeitable rights to dividends and therefore are considered participating securities. The Company calculates basic and diluted earnings per common share using the two-class method. Under the two-class method, distributed and undistributed earnings allocable to participating securities are deducted from net income to determine net income allocable to common shareholders, which is then used in the numerator of both basic and diluted earnings per share calculations. Basic earnings per common share is computed by dividing net income allocable to common shareholders by the weighted average number of common shares outstanding for the reporting period, excluding outstanding participating securities. Diluted earnings per common share is computed by dividing net income allocable to common shareholders by the weighted average number of common shares outstanding over the reporting period, adjusted to include the effect of potentially dilutive common shares, but excludes awards considered participating securities. The computation of diluted earnings per common share excludes the impact of the assumed exercise or issuance of securities that would have an anti-dilutive effect. The following tables set forth the Corporation’s earnings per share calculations for the periods indicated: Three Months Ended (Dollars in thousands, except per share data) September 30, 2021 June 30, 2021 September 30, 2020 Basic Net income $ 90,088 $ 96,302 $ 66,566 Less: dividends and undistributed earnings allocated to participating securities (937) (1,034) (612) Net income allocated to common stockholders $ 89,151 $ 95,268 $ 65,954 Weighted average common shares outstanding 93,549,639 93,635,392 93,529,967 Basic earnings per common share $ 0.95 $ 1.02 $ 0.71 Diluted Net income allocated to common stockholders $ 89,151 $ 95,268 $ 65,954 Weighted average common shares outstanding 93,549,639 93,635,392 93,529,967 Diluted effect of share-based compensation 511,085 582,636 189,200 Weighted average diluted common shares 94,060,724 94,218,028 93,719,167 Diluted earnings per common share $ 0.95 $ 1.01 $ 0.70 Nine Months Ended (Dollars in thousands, except per share data) September 30, 2021 September 30, 2020 Basic Net income (loss) $ 255,058 $ (6,785) Less: dividends and undistributed earnings allocated to participating securities (2,641) (564) Net income (loss) allocated to common stockholders $ 252,417 $ (7,349) Weighted average common shares outstanding 93,571,468 74,391,688 Basic earnings (loss) per common share $ 2.70 $ (0.10) Diluted Net income (loss) allocated to common stockholders $ 252,417 $ (7,349) Weighted average common shares outstanding 93,571,468 74,391,688 Diluted effect of share-based compensation 518,939 — Weighted average diluted common shares 94,090,407 74,391,688 Diluted earnings (loss) per common share $ 2.68 $ (0.10) The impact of stock options, which are anti-dilutive, are excluded from the computations of diluted earnings per share. The dilutive impact of these securities could be included in future computations of diluted earnings per share if the market price of the common stock increases. For the three and nine months ended September 30, 2021 and the three months ended June 30, 2021 there were no potential common shares that were anti-dilutive. For the three months ended September 30, 2020, there were 27,815 potential common shares that were anti-dilutive. As a result of incurring a net loss for the nine months ended September 30, 2020, potential common shares of 173,235 were excluded from diluted loss per share because the effect would have been anti-dilutive.

Fair Value of Financial Instrum

Fair Value of Financial Instruments	9 Months Ended
	Sep. 30, 2021
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	Fair Value of Financial Instruments The fair value of an asset or liability is the exchange price that would be received to sell that asset or paid to transfer that liability (exit price) in an orderly transaction occurring in the principal market (or most advantageous market in the absence of a principal market) for such asset or liability. In estimating fair value, the Company utilizes valuation techniques that are consistent with the market approach, the income approach, and/or the cost approach. Such valuation techniques are consistently applied. Inputs to valuation techniques include the assumptions that market participants would use in pricing an asset or liability. ASC Topic 825 requires disclosure of the fair value of financial assets and financial liabilities, including both those financial assets and financial liabilities that are not measured and reported at fair value on a recurring basis and a non-recurring basis. The methodologies for estimating the fair value of financial assets and financial liabilities that are measured at fair value are discussed below. In accordance with accounting guidance, the Company groups its financial assets and financial liabilities measured at fair value in three levels, based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy are described as follows: Level 1 - Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities. Level 2 - Inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. These might include quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (such as interest rates, prepayment speeds, volatilities, etc.), or model-based valuation techniques where all significant assumptions are observable, either directly or indirectly, in the market. Level 3 - Valuation is generated from model-based techniques where one or more significant inputs are not observable, either directly or indirectly, in the market. These unobservable assumptions reflect the Company’s own estimates of assumptions that market participants would use in pricing the asset or liability. Valuation techniques may include use of matrix pricing, discounted cash flow models, and similar techniques. Because no market exists for a significant portion of the Company’s financial instruments, fair value estimates are based on judgments regarding current economic conditions, risk characteristics of various financial instruments, and other factors. These estimates are subjective in nature, and involve uncertainties and matters of significant judgment and, therefore, cannot be determined with precision. Changes in assumptions could significantly affect the fair values presented. Management uses its best judgment in estimating the fair value of the Company’s financial instruments; however, there are inherent limitations in any estimation technique. While management believes the Company’s valuation methodologies are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different estimate of fair value at the reporting date. The Company’s valuation methodologies may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. A financial instrument’s level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. Management maximizes the use of observable inputs and attempts to minimize the use of unobservable inputs when determining fair value measurements. Estimated fair values are disclosed for financial instruments for which it is practicable to estimate fair value. These estimates are made at a specific point in time based on relevant market data and information about the financial instruments. These estimates do not reflect any premium or discount that could result from offering the Company’s entire holdings of a particular financial instrument for sale at one time, nor do they attempt to estimate the value of anticipated future business related to the instruments. In addition, the tax ramifications related to the realization of unrealized gains and losses can have a significant effect on fair value estimates and have not been considered in any of these estimates. Assets and Liabilities Measured at Fair Value on a Recurring Basis The following is a description of both the general and specific valuation methodologies used to measure financial assets and liabilities on a recurring basis, as well as the general classification of these instruments pursuant to the fair value hierarchy. Investment Securities – Investment securities are generally valued based upon quotes obtained from independent third-party pricing services, which use evaluated pricing applications and model processes. Observable market inputs, such as, benchmark yields, reported trades, broker/dealer quotes, issuer spreads, two-sided markets, benchmark securities, bids, offers, and reference data are considered as part of the evaluation. The inputs are related directly to the security being evaluated, or indirectly to a similarly situated security. Market assumptions and market data are utilized in the valuation models. The Company reviews the market prices provided by the third-party pricing service for reasonableness based on the Company’s understanding of the market place and credit issues related to the securities. The Company has not made any adjustments to the market quotes provided by them and, accordingly, the Company categorized its investment portfolio within Level 2 of the fair value hierarchy. Interest Rate Swaps – The Company originates a variable rate loan and enters into a variable-to-fixed interest rate swap with the customer. The Company also enters into an offsetting swap with a correspondent bank. These back-to-back swap 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 Company also enters into interest rate swap contracts with institutional counterparties to hedge against certain fixed-rate loans. 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 market standard discounted cash flow approach. The Company incorporates credit value adjustments on derivatives to properly reflect the respective counterparty’s nonperformance risk in the fair value measurements of its derivatives. The Company has determined that the observable nature of the majority of inputs used in deriving the fair value of these derivative contracts fall within Level 2 of the fair value hierarchy, and the credit valuation adjustments are not significant to the overall valuation of its derivative financial instruments. As a result, the valuation of interest rate swaps is classified as Level 2 of the fair value hierarchy. Equity Warrant Assets – The Company acquired equity warrant assets as a result of acquisition of Opus. Opus received equity warrant assets through its lending activities as part of loan origination fees. The warrants provide the Bank the right to purchase a specific number of equity shares of the underlying company’s equity at a certain price before expiration and contain net settlement terms qualifying as derivatives under ASC Topic 815. The fair value of equity warrant assets is determined using a Black-Scholes option pricing model and are classified as Level 3 with the fair value hierarchy due to the extent of unobservable inputs. The key assumptions used in determining the fair value include the exercise price of the warrants, valuation of the underlying entity's outstanding stock, expected term, risk-free interest rate, marketability discount for private company warrants, and price volatility. The following fair value hierarchy table presents information about the Company’s financial assets and liabilities measured at fair value on a recurring basis at the dates indicated: September 30, 2021 Fair Value Measurement Using (Dollars in thousands) Level 1 Level 2 Level 3 Total Fair Value Financial assets Investment securities available-for-sale: U.S. Treasury $ — $ 79,342 $ — $ 79,342 Agency — 530,093 — 530,093 Corporate — 386,391 — 386,391 Municipal bonds — 1,255,866 — 1,255,866 Collateralized mortgage obligations — 662,231 — 662,231 Mortgage-backed securities — 1,795,892 — 1,795,892 Total securities available-for-sale $ — $ 4,709,815 $ — $ 4,709,815 Derivative assets: Interest rate swaps $ — $ 6,747 $ — $ 6,747 Equity warrants — — 1,895 1,895 Total derivative assets $ — $ 6,747 $ 1,895 $ 8,642 Financial liabilities Derivative liabilities $ — $ 5,819 $ — $ 5,819 December 31, 2020 Fair Value Measurement Using (Dollars in thousands) Level 1 Level 2 Level 3 Total Financial assets Investment securities available-for-sale: U.S. Treasury $ — $ 32,533 $ — $ 32,533 Agency — 690,386 — 690,386 Corporate — 415,308 — 415,308 Municipal bonds — 1,446,019 — 1,446,019 Collateralized mortgage obligations — 513,366 — 513,366 Mortgage-backed securities — 833,503 — 833,503 Total securities available-for-sale $ — $ 3,931,115 $ — $ 3,931,115 Derivative assets: Interest rate swaps $ — $ 12,053 $ — $ 12,053 Equity warrants — — 1,914 1,914 Total derivative assets $ — $ 12,053 $ 1,914 $ 13,967 Financial liabilities Derivative liabilities $ — $ 12,066 $ — $ 12,066 The following table is a reconciliation of the fair value of the equity warrants that are classified as Level 3 and measured on a recurring basis as of: Three Months Ended Nine Months Ended September 30, September 30, September 30, September 30, (Dollars in thousands) 2021 2020 2021 2020 Beginning balance $ 1,903 $ 1,952 $ 1,914 $ 5,162 Change in fair value (1) (8) (32) (19) (35) Sales — — — (3,207) Ending balance $ 1,895 $ 1,920 $ 1,895 $ 1,920 ______________________________ (1) The changes in fair value are included in other income on the consolidated statement of income. The following table presents quantitative information about Level 3 fair value measurements for assets measured at fair value on a recurring basis at the dates indicated. September 30, 2021 Range (Dollars in thousands) Fair Value Valuation Technique(s) Unobservable Input(s) Min Max Weighted Average Equity warrants $ 1,895 Black-Scholes Volatility 30.00% 0.19% 5.50% 35.00% 0.76% 16.00% 31.15% 0.32% 13.59% December 31, 2020 Range (Dollars in thousands) Fair Value Valuation Technique(s) Unobservable Input(s) Min Max Weighted Average Equity warrants $ 1,914 Black-Scholes Volatility 30.00% 0.13% 6.00% 35.00% 0.36% 16.00% 31.19% 0.18% 13.51% Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis Individually Evaluated Loans – A loan is individually evaluated for expected credit losses when it does not share similar risk characteristics with other loans. Individually evaluated loans are measured based on the fair value of the underlying collateral or the discounted expected future cash flows. Collateral generally consists of accounts receivable, inventory, fixed assets, real estate, and cash. The Company measures impairment on all nonaccrual loans for which it has reduced the principal balance to the value of the underlying collateral less the anticipated selling cost. The fair value of individually evaluated loans were determined using Level 3 assumptions, and represents individually evaluated loan balances for which a specific reserve has been established or on which a write down has been taken. For real estate loans, generally, the Company obtains third party appraisals (or property valuations) and/or collateral audits in conjunction with internal analysis based on historical experience on its individually evaluated loans and other real estate owned to determine fair value. In determining the net realizable value of the underlying collateral for individually evaluated loans, the Company will then discount the valuation to cover both market price fluctuations and selling costs, typically ranging from 7% to 10% of the collateral value, that the Company expected would be incurred in the event of foreclosure. In addition to the discounts taken, the Company’s calculation of net realizable value considered any other senior liens in place on the underlying collateral. For non-real estate loans, fair value of the loan’s collateral may be determined using an appraisal, net book value per the borrower’s financial statements, or aging reports, adjusted or discounted based on management’s historical knowledge, changes in market conditions, and management’s expertise and knowledge of the client and client’s business. At September 30, 2021, the Company’s individually evaluated collateral dependent loans were evaluated based on the fair value of their underlying collateral based upon the most recent appraisals available to management. The Company completed partial charge-offs on certain individually evaluated loans based on recent real estate or property appraisals and released the related reserves during the nine months ended September 30, 2021. The following table presents our assets measured at fair value on a nonrecurring basis at the dates indicated. September 30, 2021 (Dollars in thousands) Level 1 Level 2 Level 3 Total Financial assets Collateral dependent loans $ — $ — $ 9,348 $ 9,348 December 31, 2020 (Dollars in thousands) Level 1 Level 2 Level 3 Total Financial assets Collateral dependent loans $ — $ — $ 4,077 $ 4,077 The following table presents quantitative information about Level 3 fair value measurements for assets measured at fair value on a nonrecurring basis at the dates indicated. September 30, 2021 Range (Dollars in thousands) Fair Value Valuation Technique(s) Unobservable Input(s) Min Max Weighted Average Investor loans secured by real estate CRE non-owner-occupied $ 7,045 Fair value of collateral Collateral discount and cost to sell 7.00% 7.00% 7.00% SBA secured by real estate (1) 976 Fair value of collateral Collateral discount and cost to sell 10.00% 10.00% 10.00% Commercial loans Commercial and industrial 240 Fair value of collateral Collateral discount and cost to sell 20.00% 20.00% 20.00% Franchise non-real estate secured 1,087 Fair value of collateral Collateral discount and cost to sell —% 100.00% 10.32% Total individually evaluated loans $ 9,348 December 31, 2020 Range (Dollars in thousands) Fair Value Valuation Technique(s) Unobservable Input(s) Min Max Weighted Average Investor loans secured by real estate CRE non-owner-occupied $ 198 Fair value of collateral Collateral discount and cost to sell 10.00% 10.00% 10.00% SBA secured by real estate (1) 746 Fair value of collateral Collateral discount and cost to sell 10.00% 10.00% 10.00% Business loans secured by real estate SBA secured by real estate (2) 386 Fair value of collateral Collateral discount and cost to sell 7.00% 10.00% 9.09% Commercial loans Commercial and industrial 2,040 Fair value of collateral Collateral discount and cost to sell 7.00% 10.00% 9.06% SBA non-real estate secured 707 Fair value of collateral Collateral discount and cost to sell 7.00% 7.00% 7.00% Total individually evaluated loans $ 4,077 ______________________________ (1) SBA loans that are collateralized by hotel/motel real property. (2) SBA loans that are collateralized by real property other than hotel/motel real property. Fair Values of Financial Instruments The fair value estimates presented herein are based on pertinent information available to management as of the dates indicated, representing an exit price. At September 30, 2021 (Dollars in thousands) Carrying Level 1 Level 2 Level 3 Estimated Assets Cash and cash equivalents $ 322,320 $ 322,320 $ — $ — $ 322,320 Interest-bearing time deposits with financial institutions 2,708 2,708 — — 2,708 Investments held-to-maturity 170,576 — 169,154 — 169,154 Investment securities available-for-sale 4,709,815 — 4,709,815 — 4,709,815 Loans held for sale 8,100 — 8,899 — 8,899 Loans held for investment, net 13,982,861 — — 14,121,193 14,121,193 Derivative assets 8,642 — 6,747 1,895 8,642 Accrued interest receivable 63,228 63,228 — — 63,228 Liabilities Deposit accounts $ 17,469,999 $ 16,356,929 $ 1,167,405 $ — $ 17,524,334 FHLB advances 150,000 — 150,000 — 150,000 Subordinated debentures 330,408 — 367,515 — 367,515 Derivative liabilities 5,819 — 5,819 — 5,819 Accrued interest payable 5,065 5,065 — — 5,065 At December 31, 2020 (Dollars in thousands) Carrying Level 1 Level 2 Level 3 Estimated Assets Cash and cash equivalents $ 880,766 $ 880,766 $ — $ — $ 880,766 Interest-bearing time deposits with financial institutions 2,845 2,845 — — 2,845 Investments held-to-maturity 23,732 — 25,013 — 25,013 Investment securities available-for-sale 3,931,115 — 3,931,115 — 3,931,115 Loans held for sale 601 — 645 — 645 Loans held for investment, net 13,236,433 — — 13,351,092 13,351,092 Derivative assets 13,967 — 12,053 1,914 13,967 Accrued interest receivable 74,574 74,574 — — 74,574 Liabilities Deposit accounts $ 16,214,177 $ 14,587,335 $ 1,631,047 $ — $ 16,218,382 FHLB advances 31,000 — 31,564 — 31,564 Subordinated debentures 501,511 — 544,436 — 544,436 Derivative liabilities 12,066 — 12,066 — 12,066 Accrued interest payable 6,569 6,569 — — 6,569

Derivative Instruments

Derivative Instruments	9 Months Ended
	Sep. 30, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments	Derivative Instruments The Company uses derivative instruments to manage its exposure to market risks, including interest rate risk, and to assist customers with their risk management objectives. The Company designates certain derivatives as hedging instruments in a qualifying hedge accounting relationship, while other derivatives serve as economic hedges that do not qualify for hedge accounting. Derivatives Designated as Hedging Instruments Fair Value Hedges – The Company is exposed to changes in the fair value of fixed-rate assets due to changes in benchmark interest rates. During the third quarter of 2021, the Company entered into pay-fixed and receive-floating interest rate swaps of certain fixed rate loans, primarily commercial real estate loans, to manage its exposure to changes in fair value on these instruments attributable to changes in the designated USD-SOFR-COMPOUND benchmark interest rate. These interest rate swaps are designated as fair value hedges using the last-of-layer method. As a result, the Company receives variable-rate interest payments in exchange for making fixed-rate payments over the lives of the contracts without exchanging the notional amounts. The fair value of fair value hedges are recorded as components of other assets and other liabilities in the Company’s consolidated statements of financial condition. The gain or loss on these derivatives, as well as the offsetting loss or gain on the hedged items attributable to the hedged risk are recognized in interest income in the Company’s consolidated statements of income. At September 30, 2021, interest rate swaps with a notional amount totaling $300.0 million and a fair value totaling $932,000 were designated as fair value hedges. The following amounts were recorded on the consolidated statement of financial condition related to cumulative basis adjustment for fair value hedges as of the dates indicated: Line Item in the Statement of Financial Position in Which the Hedged Item is Included Carrying Amount of the Hedged Assets Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Assets (Dollars in thousands) September 30, 2021 December 31, 2020 September 30, 2021 December 31, 2020 Loans held for investment (1) $ 298,973 $ — $ (1,027) $ — Total $ 298,973 $ — $ (1,027) $ — ______________________________ (1) These amounts include the amortized cost basis of closed portfolios used to designate hedging relationships in which the hedged item is the last layer expected to be remaining at the end of the hedging relationship. At September 30, 2021, the amortized cost basis of the closed portfolios used in these hedging relationships was $815.2 million; the cumulative basis adjustments associated with these hedging relationships was $1.0 million; and the amounts of the designated hedged items were $300.0 million. Derivatives Not Designated as Hedging Instruments Interest Rate Swap Contracts – From time to time, the Company enters into interest rate swap agreements with certain borrowers to assist them in mitigating their interest rate risk exposure associated with the loans they have with the Company. At the same time, the Company enters into identical offsetting interest rate swap agreements with another financial institution to mitigate the Company’s interest rate risk exposure associated with the swap agreements it enters into with its borrowers. At September 30, 2021, the Company had over-the-counter derivative instruments and centrally-cleared derivative instruments with matched terms with an aggregate notional amount of $135.6 million and a fair value of $5.8 million compared with an aggregate notional amount of $145.2 million and a fair value of $12.1 million at December 31, 2020. The fair value of these agreements are determined through a third party valuation model used by the Company’s counterparty bank, which uses observable market data such as interest rates, prices of Eurodollar futures contracts, and market swap rates. The fair values of these swaps are recorded as components of other assets and other liabilities in the Company’s consolidated statements of financial condition. Changes in the fair value of these swaps, which occur due to changes in interest rates, are recorded in the Company’s consolidated statements of income as a component of noninterest income. Over-the-counter contracts are tailored to meet the needs of the counterparties involved and, therefore, generally contain a greater degree of credit risk and liquidity risk than centrally-cleared contracts, which have standardized terms. Although changes in the fair value of swap agreements between the Company and borrowers and the Company and other financial institutions offset each other, changes in the credit risk of these counterparties may result in a difference in the fair value of these swap agreements. Offsetting over-the-counter swap agreements the Company has with other financial institutions are collateralized with cash and investment securities, and swap agreements with borrowers are secured by the collateral arrangements for the underlying loans these borrowers have with the Company. During the nine months ended September 30, 2021 and 2020, there were no losses recorded on swap agreements attributable to the change in credit risk associated with a counterparty. All interest rate swap agreements entered into by the Company as of September 30, 2021 and December 31, 2020 are free-standing derivatives and are not designated as hedging instruments. Other Contracts – The Company’s credit derivatives result from entering into credit risk participation agreements (“RPAs”) with a counterparty bank (Opus) during the first quarter of 2020 to accept a portion of the credit risk on interest rate swaps related to loans. RPAs provide credit protection to the financial institution should the borrower fail to perform on its interest rate swap derivative contract with the financial institution. The credit risk related to these credit derivatives is managed through the Company’s loan underwriting process. RPAs are derivative financial instruments not designated as hedging instruments and are recorded at fair value. Changes in fair value are recognized as a component of noninterest income with a corresponding offset within other assets or other liabilities. As the result of the acquisition of Opus, the RPAs were terminated in the second quarter 2020. Equity Warrant Assets – The Company acquired two individual equity warrant assets as a result of the acquisition of Opus. Opus received equity warrant assets through its lending activities, which were accounted for as loan origination fees. The warrants provide the Bank the right to purchase a specific number of equity shares of the underlying company’s equity at a certain price before expiration and contain net settlement terms qualifying as derivatives under ASC Topic 815. The Company no longer has loans associated with these borrowers. Changes in fair value are recognized as a component of noninterest income with a corresponding offset within other assets. The total fair value of the warrants held in private companies was $1.9 million in other assets as of September 30, 2021 and December 31, 2020. The two warrants expire on March 12, 2023 and July 28, 2025, respectively. The following tables summarize the Company's derivative instruments included in other assets and other liabilities in the consolidated statements of financial condition: September 30, 2021 Derivative Assets Derivative Liabilities (Dollars in thousands) Notional Fair Value Notional Fair Value Derivative instruments designated as hedging instruments: Fair value hedge - interest rate swap contracts $ 300,000 $ 932 $ — $ — Total derivative designated as hedging instruments 300,000 932 — — Derivative instruments not designated as hedging instruments: Interest rate swaps contracts 135,580 5,815 135,580 5,819 Equity warrants — 1,895 — — Total derivative not designated as hedging instruments $ 135,580 $ 7,710 $ 135,580 $ 5,819 Total derivatives 435,580 8,642 135,580 5,819 December 31, 2020 Derivative Assets Derivative Liabilities (Dollars in thousands) Notional Fair Value Notional Fair Value Derivative instruments not designated as hedging instruments: Interest rate swaps contracts $ 145,181 $ 12,053 $ 145,181 $ 12,066 Equity warrants — 1,914 — — Total derivative instruments $ 145,181 $ 13,967 $ 145,181 $ 12,066 The following table presents the effect of fair value hedge accounting on the consolidated statements of income: Three Months Ended (Dollars in thousands) Location of Gain (Loss) Recognized in Income on Derivative Instruments September 30, 2021 Gain (loss) on fair value hedging relationships: Hedged items Interest Income $ (1,027) Derivatives designated as hedging instruments Interest Income 932 The following table summarizes the effect of the derivatives not designated as hedging instruments in the consolidated statements of income. (Dollars in thousands) Three Months Ended September 30, Nine Months Ended September 30, Derivatives Not Designated as Hedging Instruments: Location of Gain (Loss) Recognized in Income on Derivative Instruments 2021 2020 2021 2020 Interest rate products Other income $ 1 $ — $ 9 $ — Other contracts Other income — 218 — 415 Equity warrants Other income (8) (31) (19) (35) Total $ (7) $ 187 $ (10) $ 380

Balance Sheet Offsetting

Balance Sheet Offsetting	9 Months Ended
	Sep. 30, 2021
Offsetting [Abstract]
Balance Sheet Offsetting	Balance Sheet Offsetting Derivative financial instruments may be eligible for offset in the consolidated statements of financial condition, such as those subject to enforceable master netting arrangements or a similar agreement. Under these agreements, the Company has the right to net settle multiple contracts with the same counterparty. The Company offers an interest rate swap product to qualified customers, which are then paired with derivative contracts the Company enters into with a counterparty bank. While derivative contracts entered into with counterparty banks may be subject to enforceable master netting agreements, derivative contracts with customers may not be subject to enforceable master netting arrangements. The Company elected to account for centrally-cleared derivative contracts on a gross basis. With regard to derivative contracts not centrally cleared through a clearinghouse, regulations require collateral to be posted by the party with a net liability position. Parties to a centrally cleared over-the-counter derivative exchange daily payments that reflect the daily change in value of the derivative. These payments are commonly referred to as variation margin and are treated as settlements of derivative exposure rather than as collateral. Financial instruments that are eligible for offset in the consolidated statements of financial condition as of the periods indicated are presented below: Gross Amounts Not Offset in the Consolidated (Dollars in thousands) Gross Amounts Recognized Gross Amounts Offset in the Consolidated Statements of Financial Condition Net Amounts Presented in the Consolidated Statements of Financial Condition Financial Instruments (1) Cash Collateral (2) Net Amount September 30, 2021 Derivative assets: Interest rate swaps $ 6,747 $ — $ 6,747 $ — $ — $ 6,747 Total $ 6,747 $ — $ 6,747 $ — $ — $ 6,747 Derivative liabilities: Interest rate swaps $ 5,819 $ — $ 5,819 $ (4,593) $ (1,226) $ — Total $ 5,819 $ — $ 5,819 $ (4,593) $ (1,226) $ — December 31, 2020 Derivative assets: Interest rate swaps $ 12,053 $ — $ 12,053 $ — $ — $ 12,053 Total $ 12,053 $ — $ 12,053 $ — $ — $ 12,053 Derivative liabilities: Interest rate swaps $ 12,066 $ — $ 12,066 $ (6,140) $ (5,926) $ — Total $ 12,066 $ — $ 12,066 $ (6,140) $ (5,926) $ — (1) Represents the fair value of securities pledged with counterparty bank. (2) Represents cash collateral pledged with counterparty bank.

Leases

Leases	9 Months Ended
	Sep. 30, 2021
Leases [Abstract]
Leases	Leases The Company accounts for its leases in accordance with ASC 842 which requires the Company to record liabilities for future lease obligations as well as assets representing the right to use the underlying leased asset. The Company’s leases primarily represent future obligations to make payments for the use of buildings or space for its operations. Liabilities to make future lease payments are recorded in accrued expenses and other liabilities, while right-of-use assets are recorded in other assets in the Company’s consolidated statements of financial condition. At September 30, 2021, all of the Company’s leases were classified as operating leases or short-term leases. Liabilities to make future lease payments and right-of-use assets are recorded for the Company’s operating leases and not short-term leases. These liabilities and right-of-use assets are determined based on the total contractual base rents for each lease, which include options to extend or renew each lease, where applicable, and where the Company believes it has an economic incentive to extend or renew the lease. Future contractual base rents are discounted using the rate implicit in the lease or using the Company’s estimated incremental borrowing rate if the rate implicit in the lease is not readily determinable. For leases that contain variable lease payments, the Company assumes future lease payment escalations based on a lease payment escalation rate specified in the lease or the specified index rate observed at the time of lease commencement. Liabilities to make future lease payments are accounted for using the interest method, being reduced by periodic contractual lease payments net of periodic interest accretion. Right-of-use assets for operating leases are amortized over the term of the associated lease by amounts that represent the difference between periodic straight-line lease expense and periodic interest accretion on the related liability to make future lease payments. Short-term leases are leases that have a term of 12 months or less at commencement. The Company recognizes expense for both operating leases and short-term leases on a straight-line basis. The Company’s lease expense is recorded in premises and occupancy expense in the consolidated statements of income (loss). The following table presents the components of lease expense for the periods indicated: Three Months Ended Nine Months Ended (Dollars in thousands) September 30, 2021 June 30, 2021 September 30, 2020 September 30, 2021 September 30, 2020 Operating lease $ 4,826 $ 4,887 5,618 $ 14,725 $ 12,690 Short-term lease 433 323 495 1,263 1,425 Total lease expense $ 5,259 $ 5,210 $ 6,113 $ 15,988 $ 14,115 The Company assumed operating leases in the acquisition of Opus on June 1, 2020. The liabilities and related right-of-use assets recorded for the assumption of these leases was approximately $43.3 million and $42.4 million, respectively. Right-of-use assets related to the Opus acquisition reflect unfavorable lease liability adjustments of approximately $900,000. Lease liabilities for leases assumed from Opus were measured based on the net present value of remaining future lease payments, with consideration given for options to extend or renew each lease. Remaining future lease payments were discounted at the Company’s estimated incremental borrowing rate on the date of acquisition. The following table presents supplemental information related to operating leases as of and for nine months ended: (Dollars in thousands) September 30, 2021 December 31, 2020 Balance Sheet: Operating lease right of use assets $ 67,586 $ 76,090 Operating lease liabilities 76,592 85,556 Nine Months Ended (Dollars in thousands) September 30, 2021 September 30, 2020 Cash Flows: Operating cash outflow from operating leases $ 15,512 $ 10,946 The following table provides information related to minimum contractual lease payments and other information associated with the Company’s leases as of the dates indicated: (Dollars in thousands) 2021 2022 2023 2024 2025 Thereafter Total As of September 30, 2021 Operating leases $ 5,103 $ 20,058 $ 19,463 $ 17,454 $ 12,171 $ 15,855 $ 90,104 Short-term leases 130 24 — — — — 154 Total contractual base rents (1) $ 5,233 $ 20,082 $ 19,463 $ 17,454 $ 12,171 $ 15,855 $ 90,258 Total liability to make lease payments $ 76,592 Difference in undiscounted and discounted future lease payments $ 13,666 Weighted average discount rate 5.23 % Weighted average remaining lease term (years) 5.1 ______________________________ (1) Contractual base rents reflect options to extend and renewals, and do not include property taxes and other operating expenses due under respective lease agreements. The Company from time to time leases portions of space it owns to other parties. Income received from these transactions is recorded on a straight-line basis over the term of the sublease. For the three months ended September 30, 2021, June 30, 2021, and September 30, 2020, rental income totaled $176,000, $177,000, and $265,000, respectively. For the nine months ended September 30, 2021 and September 30, 2020, rental income totaled $528,000 and $356,000, respectively.

Revenue Recognition

Revenue Recognition	9 Months Ended
	Sep. 30, 2021
Revenue from Contract with Customer [Abstract]
Revenue Recognition	Revenue Recognition The Company accounts for revenue from contracts with customers under ASC 606, which requires revenue that is derived from a contract with a customer to be recognized when the Company satisfies the related performance obligations by transferring to the customer a good or service. The majority of the Company’s contracts with customers associated with revenue streams that are within the scope of ASC 606 are considered short-term in nature and can be canceled at any time by the customer or the Company without penalty, such as a deposit account agreement. These revenue streams are included in noninterest income. The Company’s principal source of revenue is interest income on loans, investment securities, and other interest earning assets, all of which are not within the scope of ASC 606. The remainder of the Company’s revenue is classified as noninterest income and is earned from a variety of fees, such as custodial and other fees, service charges, gains and losses, and other income. The following tables provide a summary of the Company’s noninterest income, segregated by revenue streams within and outside the scope of ASC 606 for the periods indicated: Three Months Ended September 30, 2021 June 30, 2021 September 30, 2020 (Dollars in thousands) Within Scope (1) Out of Scope (2) Within Scope (1) Out of Scope (2) Within Scope (1) Out of Scope (2) Noninterest income Loan servicing income $ — $ 536 $ — $ 622 $ — $ 481 Service charges on deposit accounts 2,375 — 2,222 — 1,593 — Other service fee income 350 — 352 — 487 — Debit card interchange income 834 — 1,099 — 944 — Earnings on bank-owned life insurance — 3,266 — 2,279 — 2,270 Net gain (loss) from sales of loans — 1,187 — 1,546 — 9,542 Net gain (loss) from sales of investment securities — 4,190 — 5,085 — 1,141 Trust custodial account fees 11,446 — 7,897 — 6,960 — Escrow and exchange fees 1,867 — 1,672 — 1,142 — Other income (14) 4,063 97 3,858 91 2,107 Total noninterest income $ 16,858 $ 13,242 $ 13,339 $ 13,390 $ 11,217 $ 15,541 ___________________________________ (1) Revenues from contracts with customers accounted for under ASC 606. (2) Revenues not within the scope of ASC 606 and accounted for under other applicable GAAP requirements. Nine Months Ended September 30, 2021 September 30, 2020 (Dollars in thousands) Within Scope (1) Out of Scope (2) Within Scope (1) Out of Scope (2) Noninterest income Loan servicing income $ — $ 1,616 $ — $ 1,395 Service charges on deposit accounts 6,629 — 4,707 — Other service fee income 1,175 — 1,095 — Debit card interchange income 2,720 — 1,749 — Earnings on bank-owned life insurance — 7,778 — 4,920 Net gain (loss) from sales of loans — 3,094 — 8,281 Net gain from sales of investment securities — 13,321 — 8,880 Trust custodial account fees 26,565 — 9,357 — Escrow and exchange fees 5,065 — 1,407 — Other income 365 12,241 227 6,113 Total noninterest income $ 42,519 $ 38,050 $ 18,542 $ 29,589 ______________________________ (1) Revenues from contracts with customers accounted for under ASC 606. (2) Revenues not within the scope of ASC 606 and accounted for under other applicable GAAP requirements. The major revenue streams by type that are within the scope of ASC 606 presented in the tables above are described in additional detail below: Service Charges on Deposit Accounts and Other Service Fee Income Service charges on deposit accounts and other service fee income consists of periodic service charges on deposit accounts and transaction based fees such as those related to overdrafts, ATM charges, and wire transfer fees. The majority of these revenues are accounted for under ASC 606. Performance obligations for periodic service charges on deposit accounts are typically short-term in nature and are generally satisfied on a monthly basis, while performance obligations for other transaction based fees are typically satisfied at a point in time (which may consist of only a few moments to perform the service or transaction) with no further obligations on behalf of the Company to the customer. Periodic service charges are generally collected monthly directly from the customer’s deposit account, and at the end of a statement cycle, while transaction based service charges are typically collected at the time of or soon after the service is performed. Debit Card Interchange Income Debit card interchange fee income consists of transaction processing fees associated with customer debit card transactions processed through a payment network and are accounted for under ASC 606. These fees are earned each time a request for payment is originated by a customer debit cardholder at a merchant. In these transactions, the Company transfers funds from the debit cardholder’s account to a merchant through a payment network at the request of the debit cardholder by way of the debit card transaction. The related performance obligations are generally satisfied when the transfer of funds is complete, which is generally a point in time when the debit card transaction is processed. Debit card interchange fees are typically received and recorded as revenue on a daily basis. Trust Custodial Account Fees Custodial account fees is a revenue stream acquired in the Opus acquisition and is governed by contracts executed with Pacific Premier Trust clients, largely to perform maintenance and custodial services over their alternative IRA investments as well as certain accounts that do not qualify as individual retirement accounts pursuant to the Internal Revenue Code. Typically, such fees are billed and collected on a quarterly basis and recognized commensurate with the completion of the performance obligations required under the contracts. At September 30, 2021, the Company had accrued fees receivable of approximately $10.4 million, which are included in other assets in the consolidated statements of financial position. The balance of accrued fees receivable is net of approximately $988,000 of allowance for credit losses on doubtful accounts. The allowance represents the Company’s estimate of credit losses on accrued fees receivable in accordance in ASC 326. The Company recorded approximately $281,000 and $411,000 in credit loss expense associated with accrued fees receivable for the three and nine month periods ended September 30, 2021, respectively. The credit loss expense for the three and nine month periods ended September 30, 2020, was $12,000 and $76,000, respectively. Credit loss expense for fees receivable is included in other expense of the Company’s consolidated statements of income (loss). Escrow and Exchange Fees Escrow and exchange fees is a revenue stream from the Commerce Escrow division acquired in the Opus acquisition, which are related to agreements with customers participating in escrow transactions. Transactions under Section 1031 of the Internal Revenue Code generate exchange fees as well as escrow fees. These fees relate to services that include preparation of closing statements and custody of escrow funds. The fees are received from the sale proceeds of a relinquished property and are recognized as revenue upon closing of the escrow transaction, which is the final performance obligation. Other Income Other noninterest income includes other miscellaneous fees, which are accounted for under ASC 606; however, much like service charges on deposit accounts, these fees have performance obligations that are very short-term in nature and are typically satisfied at a point in time. Revenue is typically recorded at the time these fees are collected, which is generally upon the completion the related transaction or service provided. Other revenue streams that may be applicable to the Company include gains and losses from the sale of nonfinancial assets such as other real estate owned and property premises and equipment. The Company accounts for these revenue streams in accordance with ASC 610-20, which requires the Company to look to guidance in ASC 606 in the application of certain measurement and recognition concepts. The Company records gains and losses on the sale of nonfinancial assets when control of the asset has been surrendered to the buyer, which generally occurs at a specific point in time. Practical Expedient

Variable Interest Entities

Variable Interest Entities	9 Months Ended
	Sep. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Variable Interest Entities	Variable Interest Entities The Company is involved with VIEs through its loan securitization activities, affordable housing investments that qualify for the low-income housing tax credit (“LIHTC”), and trust subsidiaries, which have issued trust preferred securities. The Company has determined that its interests in these entities meet the definition of variable interests. As of September 30, 2021 and December 31, 2020, the Company determined it was not the primary beneficiary of the VIEs and did not consolidate its interests in VIEs. The following table provides a summary of the carrying amount of assets and liabilities in the Company’s consolidated statements of financial condition and maximum loss exposures as of September 30, 2021 and December 31, 2020 that relate to variable interests in non-consolidated VIEs. September 30, 2021 December 31, 2020 (Dollars in thousands) Maximum Loss Assets Liabilities Maximum Loss Assets Liabilities Multifamily loan securitization: Investment securities (1) $ 90,575 $ 90,575 $ — $ 100,927 $ 100,927 $ — Reimbursement obligation (2) 50,901 — 448 50,901 — 448 Affordable housing partnership: Other investments (3) 70,606 90,010 — 71,681 89,759 — Unfunded equity commitments (2) — — 19,404 — — 18,078 Total $ 212,082 $ 180,585 $ 19,852 $ 223,509 $ 190,686 $ 18,526 ______________________________ (1) Included in investment securities available-for-sale on the consolidated statement of financial condition. (2) Included in accrued expenses and other liabilities on the consolidated statement of financial condition. (3) Included in other assets on the consolidated statement of financial condition. . Multifamily loan securitization With respect to the securitization transaction with Freddie Mac discussed in Note 6 - Loans Held for Investment , the Company’s variable interests reside with the purchase of the underlying Freddie Mac-issued guaranteed, structured pass-through certificates that were held as investment securities available-for-sale at fair value as of September 30, 2021. Additionally, the Company has variable interests through a reimbursement agreement executed by Freddie Mac that obligates the Company to reimburse Freddie Mac for any defaulted contractual principal and interest payments identified after the ultimate resolution of the defaulted loans. Such reimbursement obligations are not to exceed 10% of the original principal amount of the loans comprising the securitization pool. As part of the securitization transaction, the Company released all servicing obligations and rights to Freddie Mac who was designated as the Master Servicer. In its capacity as Master Servicer, Freddie Mac can terminate the Company’s role as sub-servicer and direct such responsibilities accordingly. In evaluating our variable interests and continuing involvement in the VIE, we determined that we do not have the power to make significant decisions or direct the activities that most significantly impact the economic performance of the VIE’s assets and liabilities. As sub-servicer of the loans, the Company does not have the authority to make significant decisions that influence the value of the VIE’s net assets and, therefore, the Company is not the primary beneficiary of the VIE. As a result, we determined that the VIE associated with the multifamily securitization should not be included in the consolidated financial statements of the Company. We believe that our maximum exposure to loss as a result of our involvement with the VIE associated with the securitization is the carrying value of the investment securities issued by Freddie Mac and purchased by the Company. Additionally, our maximum exposure to loss under the reimbursement agreement executed with Freddie Mac is 10% of the original principal amount of the loans comprising the securitization pool, or $50.9 million. Based upon our analysis of quantitative and qualitative data over the underlying loans included in the securitization pool, as of September 30, 2021 and December 31, 2020, our reserve for estimated losses with respect to the reimbursement obligation was $448,000. Investments in qualified affordable housing partnerships The Company has variable interests through its affordable housing partnership investments. These investments are fundamentally designed to provide a return through the generation of income tax credits. The Company has evaluated its involvement with the low-income housing projects and determined it does not have significant influence or decision making capabilities to manage the projects, and therefore, is not the primary beneficiary, and does not consolidate these interests. The Company’s maximum exposure to loss, exclusive of any potential realization of tax credits, is equal to the commitments invested, adjusted for amortization. The amount of unfunded commitments was included in the investments recognized as assets with a corresponding liability. The table above summarizes the amount of tax credit investments held as assets, the amount of unfunded commitments held as liabilities, and the maximum exposure to loss as of September 30, 2021 and December 31, 2020, respectively. Trust preferred securities The Company accounted for its investments in its wholly owned special purpose entities, Heritage Oaks Capital Trust II and Santa Lucia Bancorp (CA) Capital Trust, acquired through bank acquisitions, under the equity method whereby the subsidiary’s net earnings were recognized in the Company’s consolidated statement of income and the investment in these entities is included in other assets in the Company’s consolidated statements of financial condition. The Corporation was not allowed to consolidate the capital trusts as they have been formed for the sole purpose of issuing trust preferred securities, from which the proceeds were invested in the Company’s junior subordinated debt securities and reflected in our consolidated statements of financial condition as subordinated debentures with the corresponding interest distributions reflected as interest expense in the consolidated statements of income. The capital securities were subject to mandatory redemption, in whole or in part, upon repayment of the subordinated debt, and qualified as Tier 2 capital. In July 2021, the Company redeemed $5.2 million junior subordinated debt securities associated with Heritage Oaks Capital Trust II and $5.2 million junior subordinated debt securities associated with Santa Lucia Bancorp (CA) Capital Trust. Subsequent to the redemptions, Heritage Oaks Capital Trust II and Santa Lucia Bancorp (CA) Capital Trust were dissolved. See Note 9 - Subordinated Debentures for additional information.

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 30, 2021
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events Quarterly cash dividend On October 19, 2021, the Corporation’s Board of Directors declared a cash dividend of $0.33 per share, payable on November 12, 2021 to shareholders of record on November 1, 2021. Branch consolidations On November 5, 2021, the Bank consolidated two branch offices, one in San Diego County and the other in Los Angeles County, both in California, into nearby branch offices with minimal disruption to clients and daily operations. The consolidated branches were identified largely based on the proximity of neighboring branches, deposit base, historic growth, and market opportunity to improve further the overall efficiency of operations, as well as the Bank's goals related to Fair Lending and the Community Reinvestment Act. After the branch consolidations, the Bank operates 61 branches in major metropolitan markets in California, Washington, Oregon, Arizona, and Nevada. Transfers of investment securities available-for-sale to held-to-maturity The Company reassessed classification of certain investments, and effective October 1, 2021, the Company transferred approximately $165.5 million of municipal bonds from available-for-sale to held-to-maturity securities at fair value. These securities had an unrealized loss of $3.4 million at the transfer date, which was reflected as a discount on the date of transfer. This discount, as well as the related unrealized loss in accumulated other comprehensive income, will be amortized into interest income as a yield adjustment over the remaining term of the securities. The amortization of the unrealized loss reported in accumulated other comprehensive income will offset the effect on interest income of the amortization of the discount. No gains or losses were recorded at the time of transfer. Fair value hedge On November 1, 2021, as part of its interest rate sensitivity management, the Company entered into pay-fixed and receive-floating interest rate swaps with an aggregate notional amount of $300.0 million of certain fixed rate loans to manage its exposure to changes in fair value on these instruments attributable to changes in the designated benchmark interest rate. These interest rate swaps are designated as fair value hedges. Under the swap agreement, the Company receives variable-rate interest payments based on USD-SOFR-COMPOUND in exchange for making fixed-rate payments over the lives of the contracts without exchanging the notional amounts.

Significant Accounting Polici_2

Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Principles of Consolidation	The consolidated financial statements include the accounts of Pacific Premier Bancorp, Inc. (the “Corporation”) and its wholly owned subsidiaries, including Pacific Premier Bank (the “Bank”) (collectively, the “Company,” “we,” “our,” or “us”). All significant intercompany accounts and transactions have been eliminated in consolidation.
Basis of Financial Statement Presentation	In the opinion of management, the unaudited consolidated financial statements reflect all normal recurring adjustments and accruals that are necessary for a fair presentation of the statement of financial position and the results of operations for the interim periods presented. The results of operations for the nine months ended September 30, 2021 are not necessarily indicative of the results that may be expected for any other interim period or the full year ending December 31, 2021. Certain items in the prior year financial statements were reclassified to conform to the current year presentation. Reclassification had no effect on prior year net income or stockholders’ equity. Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). The unaudited consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2020 (the “2020 Form 10-K”).
Variable Interest Entities	The Company consolidates voting entities in which the Company has control through voting interests or entities through which the Company has a controlling financial interest in a variable interest entity (“VIE”). The Company evaluates its interests in these entities to determine whether they meet the definition of a VIE and whether the Company is required to consolidate these entities. A VIE is consolidated by its primary beneficiary, which is the party that has both (i) the power to direct the activities that most significantly impact the economic performance of the VIE and (ii) a variable interest that could potentially be significant to the VIE. To determine whether or not a variable interest the Company holds could potentially be significant to the VIE, the Company considers both qualitative and quantitative factors regarding the nature, size, and form of the Company's involvement with the VIE.The Company is involved with VIEs through its loan securitization activities, affordable housing investments that qualify for the low-income housing tax credit (“LIHTC”), and trust subsidiaries, which have issued trust preferred securities. The Company has determined that its interests in these entities meet the definition of variable interests.
Recently Issued Accounting Pronouncements	Accounting Standards Adopted in 2021 In October 2020, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU” or “Update”) 2020-08, Codification Improvements to Subtopic 310-20, Receivables - Nonrefundable Fees and Other Costs . The amendments included in this Update are intended to clarify that an entity should reevaluate whether a callable debt security is within the scope of paragraph 310-20-35-33 for each reporting period. The guidance in paragraph 310-20-35-33 relates to amortization of premiums on individual callable debt securities and the period over which the premium shall be amortized in relation to the date the security is callable. For public business entities, the amendments in this Update became effective for fiscal years beginning after December 15, 2020, and interim periods within those years. The Company’s adoption of this Update did not have a material impact on its financial statements. In January 2020, the FASB issued ASU 2020-01, Investments—Equity Securities (Topic 321), Investments—Equity Method and Joint Ventures (Topic 323), and Derivatives and Hedging (Topic 815)—Clarifying the Interactions between Topic 321, Topic 323, and Topic 815 . The amendments in this Update clarify the interaction of the accounting for equity securities under Topic 321 and investments under the equity method of accounting in Topic 323, as well as the accounting for certain forward contracts and purchased options accounted for under Topic 815. The amendments clarify that an entity should consider observable transactions that require it to either apply or discontinue the equity method of accounting for the purposes of applying the measurement alternative in accordance with Topic 321 immediately before applying or upon discontinuing the equity method. The amendments within this Update also clarify that when applying the guidance in paragraph 815-10-15-141(a) an entity should not consider whether, upon the settlement of the forward contract or exercise of the purchased option, individually or with existing investments, the underlying securities would be accounted for under the equity method in Topic 323 or the fair value option in accordance with the financial instruments guidance in Topic 825. An entity also would evaluate the remaining characteristics in paragraph 815-10-15-141 to determine the accounting for those forward contracts and purchased options. The amendments within this Update became effective for public business entities for fiscal years beginning after December 15, 2020, and interim periods within those fiscal years. The Company’s adoption of this Update did not have a material impact on its financial statements. In December 2019, the FASB issued ASU 2019-12, Simplifying the Accounting for Income Taxes , which includes updates to Topic 740 - Income Taxes. The amendments to this Update include the removal of the following exceptions included in Topic 740: (1) Exception to the general intra-period tax allocation principle when there is a loss from continuing operations and income or a gain from other items (for example, discontinued operations or other comprehensive income); (2) Exception to the requirement to recognize a deferred tax liability for equity method investments when a foreign subsidiary becomes an equity method investment; (3) Exception to the ability not to recognize a deferred tax liability for a foreign subsidiary when a foreign equity method investment becomes a subsidiary; and (4) Exception to the general methodology for calculating income taxes in an interim period when a year-to-date loss exceeds the anticipated loss for the year. The amendments included in this update also require the following: (1) Requiring that an entity recognize a franchise tax by (i) accounting for the amount based on income under Accounting Standards Codification (“ASC”) 740 and (ii) accounting for any residual amount as a non-income-based tax. (2) Requiring that an entity evaluate when a step up in the tax basis of goodwill should be considered part of the business combination in which the book goodwill was originally recognized and when it should be considered a separate transaction. (3) Specifying that an entity is not required to allocate any portion of the consolidated amount of current and deferred tax expense to a legal entity that is not subject to tax in its separate financial statements. However, an entity may elect to do so (on an entity-by-entity basis) for a legal entity that is both not subject to tax and disregarded by the taxing authority. (4) Requiring that an entity reflect the effect of an enacted change in tax laws or rates in the annual effective tax rate computation in the interim period that includes the enactment date. (5) Making minor Codification improvements for tax benefits related to tax-deductible dividends on employee stock ownership plan shares and investments in qualified affordable housing projects accounted for using the equity method. The amendments within this Update became effective for public business entities for fiscal years beginning after December 15, 2020, and interim periods within those fiscal years. The Company’s adoption of this Update did not have a material impact on its financial statements. Recent Accounting Guidance Not Yet Effective In January 2021, the FASB issued ASU 2021-01, Reference Rate Reform (Topic 848) . The amendments included in this Update clarify that certain optional expedients and exceptions in Topic 848 for contract modifications and hedge accounting apply to derivatives that are affected by the worldwide transition to new reference rates (commonly referred to as the “discounting transition”). Specifically, certain provisions in Topic 848, if elected by an entity, apply to derivative instruments that use an interest rate for margining, discounting, or contract price alignment that is modified as a result of reference rate reform. Amendments in this Update are to the expedients and exceptions in Topic 848 and capture the incremental consequences of the scope clarification and tailor the existing guidance to derivative instruments affected by the discounting transition. The amendments in this Update are effective immediately for all entities that elect to apply the optional guidance in Topic 848. An entity may elect to apply the amendments in this Update on a full retrospective basis as of any date from the beginning of an interim period that includes or is subsequent to March 12, 2020, or on a prospective basis to new modifications from any date within an interim period that includes or is subsequent to the date of the issuance of a final Update, up to the date that financial statements are available to be issued. The Company is currently evaluating the impact of this Update on its consolidated financial statements, upon which this accounting guidance is not expected to have a material impact. In March 2020, the FASB issued ASU 2020-04, Reference Rate Reform (Topic 848) — Facilitation of the Effects of Reference Rate Reform on Financial Reporting . In response to concerns about structural risks of interbank offered rates (“IBORs”), and, particularly, the risk of cessation of the London Interbank Offered Rate (“LIBOR”), regulators around the world have undertaken reference rate reform initiatives to identify alternative reference rates that are more observable or transaction-based and less susceptible to manipulation. The amendments in this Update provide optional guidance for a limited time to ease the potential burden in accounting for (or recognizing the effects of) reference rate reform on financial reporting as well as optional expedients and exceptions for applying GAAP to contracts, hedging relationships, and other transactions affected by reference rate reform if certain criteria are met. The amendments in this Update apply only to contracts and hedging relationships that reference LIBOR or another reference rate expected to be discontinued due to reference rate reform. The expedients and exceptions provided by the amendments do not apply to contract modifications made and hedging relationships entered into or evaluated after December 31, 2022. The amendments in this Update are elective and became effective upon issuance for all entities. An entity may elect to apply the amendments for contract modifications by Topic or Industry Subtopic as of any date from the beginning of an interim period that includes or is subsequent to March 12, 2020, or prospectively from a date within an interim period that includes or is subsequent to March 12, 2020, up to the date that the financial statements are available to be issued. Once elected for a Topic or an Industry Subtopic, the amendments in this Update must be applied prospectively for all eligible contract modifications for that Topic or Industry Subtopic. The Company has not yet made a determination on whether it will make this election and is currently tracking the exposure as of each reporting period and assessing the significance of impact towards implementing any necessary modification in consideration of the election of this amendment. An entity may elect to apply the amendments in this Update to eligible hedging relationships existing as of the beginning of the interim period that includes March 12, 2020 and to new eligible hedging relationships entered into after the beginning of the interim period that includes March 12, 2020. The Company has not entered into any hedging related transactions that reference LIBOR or another reference rate that is expected to be discontinued, and as such, the amendments included in this Update have not had an impact on the Company’s consolidated financial statements. The Company has created a cross-functional working group to manage the transition away from LIBOR. This working group is comprised of senior leadership and staff from functional areas that include: finance, treasury, lending, loan servicing, enterprise risk management, information technology, legal, and other internal stakeholders integral to the Bank’s transition away from LIBOR. The working group monitors developments related to transition and uncertainty surrounding reference rate reform and guides the Bank’s response. The working group is currently assessing the population of financial instruments that reference LIBOR, confirming our loan documents that reference LIBOR have been appropriately amended, ensuring that our internal systems are prepared for the transition, and managing the transition process with our customers. While the Company has not yet selected a preferred reference rate as an alternative to LIBOR, currently, new loan originations are primarily being made with the use of the Constant Maturity Treasury (“CMT”) Index. The Company may also consider the use of other alternative reference rates based on the individual needs of its customers as well as the types of credit being extended. In August 2020, the FASB issued ASU 2020-06, Debt - Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging - Contracts in Entity’s Own Equity (Subtopic 815-40) - Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity.
Revenue Recognition	Revenue Recognition. The Company accounts for certain of its revenue streams deemed to arise from contracts with customers in accordance with ASC 606 - Revenue from Contracts with Customers . Revenue streams within the scope of and accounted for under ASC 606 include: service charges and fees on deposit accounts, debit card interchange fees, custodial account fees, fees from other services the Bank provides its customers, and gains and losses from the sale of other real estate owned and property, premises and equipment. These revenue streams are included in noninterest income in the Company’s consolidated statements of income. ASC 606 requires revenue to be recognized when the Company satisfies related performance obligations by transferring to the customer a good or service. The recognition of revenue under ASC 606 requires the Company to first identify the contract with the customer, identify the performance obligations, determine the transaction price, allocate the transaction price to the performance obligations, and finally recognize revenue when the performance obligations have been satisfied and the good or service has been transferred. Revenue is measured as the amount of consideration the Company expects to receive in exchange for the transfer of goods or services to the associated customer. The majority of the Company’s contracts with customers associated with revenue streams that are within the scope of ASC 606 are considered short-term in nature and can be canceled at any time by the customer or the Bank, such as a deposit account agreement. Other more significant revenue streams for the Company such as interest income on loans and investment securities are specifically excluded from the scope of ASC 606 and are accounted for under other applicable GAAP.
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets. Goodwill is generally determined as the excess of the fair value of the consideration transferred, plus the fair value of any noncontrolling interests in the acquiree, over the fair value of the net assets acquired and liabilities assumed as of the acquisition date. Goodwill and intangible assets acquired in a purchase business combination and determined to have indefinite useful lives are not amortized, but are tested for impairment at least annually or more frequently if events and circumstances lead management to believe the value of goodwill may be impaired. Impairment testing is performed at the reporting unit level, which is considered the Company level as management has identified the Company is its sole reporting unit as of September 30, 2021. Management’s assessment of goodwill is performed in accordance with ASC 350-20 - Intangibles - Goodwill and Other - Goodwill , which allows the Company to first perform a qualitative assessment of goodwill to determine if it is more likely than not the fair value of the Company’s equity is below its carrying value. However, GAAP also allows the Company, at its option, to unconditionally forego the qualitative assessment and proceed directly to a quantitative assessment. When performing a qualitative assessment of goodwill, should the results of such analysis indicate it is more likely than not the fair value of the Company’s equity is below its carrying value, the Company then performs the quantitative assessment of goodwill to determine the fair value of the reporting unit and compares it to its carrying value. If the fair value of the reporting unit is below its carrying value, the Company would then recognize the amount of impairment as the amount by which the reporting unit’s carrying value exceeds its fair value, limited to the total amount of goodwill allocated to the reporting unit. Impairment losses are recorded as a charge to noninterest expense. Other intangible assets consist of core deposit intangible (“CDI”) and customer relationship intangible assets arising from whole bank acquisitions, and are amortized on either an accelerated basis, reflecting the pattern in which the economic benefits of the intangible assets are consumed or otherwise used, or on a straight-line amortization method over their estimated useful lives, which range from 6 to 11 years. GAAP also requires that intangible assets other than goodwill be tested for impairment when events and circumstances change, indicating that their carrying value may not be recoverable. For intangible assets other than goodwill, the Company first performs a qualitative assessment to determine if the carrying value of such assets may not be recoverable. A quantitative assessment is followed to determine the amount of impairment in the event the carrying value of such assets are deemed not recoverable. Impairment is measured as the amount by which their carrying value exceeds their estimated fair value.
Leases	Leases. The Company accounts for its leases in accordance with ASC 842, which requires the Company to record liabilities for future lease obligations as well as assets representing the right to use the underlying leased asset. Leases with a term of 12 months or less are accounted for using straight-line expense recognition with no right-of-use asset being recorded for such leases. Other than short-term leases, the Company classifies its leases as either finance leases or operating leases. Leases are classified as finance leases when any of the following are met: (a) the lease transfers ownership of the underlying asset to the lessee by the end of the lease term, (b) the lease contains an option to purchase the underlying asset that the lessee is reasonably certain to exercise, (c) the term of the lease represents a major part of the remaining life of the underlying asset, (d) the present value of the future lease payments equals or exceeds substantially all of the fair value of the underlying asset, or (e) the underling leased asset is expected to have no alternative use to the lessor at the end of the lease term due to its specialized nature. When the Company’s assessment of a lease does not meet the foregoing criteria, and the term of the lease is in excess of 12 months, the lease is classified as an operating lease. Liabilities to make lease payments and right-of-use assets are determined based on the total contractual base rents for each lease, discounted at the rate implicit in the lease or at the Company’s estimated incremental borrowing rate if the rate is not implicit in the lease. The Company measures future base rents based on the minimum payments specified in the lease agreement, giving consideration for periodic contractual rent increases which are based on an escalation rate or a specified index. When future rent payments are based on an index, the Company uses the index rate observed at the time of lease commencement to measure future lease payments. Liabilities to make lease payments are accounted for using the interest method, which are reduced by periodic rent payments, net of interest accretion. Right-of-use assets for finance leases are amortized on a straight-line basis over the term of the lease, while right-of-use assets for operating leases are amortized over the term of the lease by amounts that represent the difference between periodic straight-line lease expense and periodic interest accretion on the related liability to make lease payments. Expense recognition for finance leases is representative of the sum of periodic amortization of the associated right-of-use asset as well as the periodic interest accretion on the liability to make lease payments. Expense recognition for operating leases is recorded on a straight-line basis. As of September 30, 2021, all of the Company’s leases were classified as either operating leases or short-term leases. From time to time the Company leases portions of the space it leases to other parties through sublease transactions. Income received from these transactions is recorded on a straight-line basis over the term of the sublease.
Securities/Securities Held-to-Maturity/Securities Available-for-Sale	Securities. The Company has established written guidelines and objectives for its investing activities. At the time of purchase, management designates the security as either held-to-maturity, available-for-sale, or held for trading based on the Company’s investment objectives, operational needs, and intent. The investments are monitored to ensure that those activities are consistent with the established guidelines and objectives. Securities Held-to-Maturity. Investments in debt securities that management has the positive intent and ability to hold to maturity are reported at cost and adjusted for periodic principal payments and the amortization of premiums and accretion of discounts, which are recognized in interest income using the interest method over the period of time remaining to investment’s maturity. Transfers of debt securities from available-for-sale classification to held-to-maturity classification are made at fair value. Any associated unrealized gains or losses on such securities become part of the security’s amortized cost at the time of transfer and are subsequently amortized or accreted into interest income over the remaining life of the security using the interest method. In addition, the related unrealized gains and losses included in accumulated other comprehensive income at the time a security is transferred are also subsequently amortized or accreted into interest income over the remaining life of the security using the interest method. Securities Available-for-Sale. Investments in debt securities that management has no immediate plan to sell, but which may be sold in the future, are carried at fair value. Premiums and discounts are amortized using the interest method over the remaining period to the call date for premiums or contractual maturity for discounts and, in the case of mortgage-backed securities, the estimated average life, which can fluctuate based on the anticipated prepayments on the underlying collateral of the securities. Unrealized holding gains and losses, net of tax, are recorded in a separate component of stockholders’ equity as accumulated other comprehensive income. Realized gains and losses on the sales of securities are determined on the specific identification method, recorded on a trade date basis based on the amortized cost basis of the specific security and are included in noninterest income as net gain (loss) on investment securities. Equity Securities. Investments classified as equity securities that have readily determinable fair values are carried at fair value with changes in fair value recognized in current period earnings as a component of noninterest income. Equity securities that do not have readily determinable fair values are carried at cost, adjusted for any observable price changes in orderly transactions for identical or similar investments of the same issuer. Such investments are also recorded net of any previously recognized impairment. Certain equity securities the Company holds, such as investments in the stock of the Federal Home Loan Bank and the Federal Reserve Bank of San Francisco are carried at cost, less any previously recognized impairment. Investment in these securities is restricted to member banks and the securities are not actively traded on an exchange.
Allowance for Credit Losses on Investment Securities	Allowance for Credit Losses (“ACL”) on Investment Securities. The ACL on investment securities is determined for both the held-to-maturity and available-for-sale classifications of the investment portfolio in accordance with ASC 326. The ACL for held-to-maturity investment securities is recorded at the time of purchase or acquisition, representing the Company’s best estimate of current expected credit losses (“CECL”) as of the date for the consolidated statements of financial condition. The ACL for held-to-maturity investment securities is determined on a collective basis, based on shared risk characteristics, and is determined at the individual security level when the Company deems a security to no longer possess shared risk characteristics. For investment securities where the Company has reason to believe the credit loss exposure is remote, such as those guaranteed by the U.S. government or other government enterprises, a zero credit loss assumption is applied. For available-for-sale investment securities, the Company performs a quarterly qualitative evaluation of securities in an unrealized loss position to determine if, for those investments in an unrealized loss position, the decline in fair value is credit related or non-credit related. In determining whether a security’s decline in fair value is credit related, the Company considers a number of factors including, but not limited to: (i) the extent to which the fair value of the investment is less than its amortized cost; (ii) the financial condition and near-term prospects of the issuer, (iii) downgrades in credit ratings, (iv) payment structure of the security, (v) the ability of the issuer of the security to make scheduled principal and interest payments, and (vi) general market conditions which reflect prospects for the economy as a whole, including interest rates and sector credit spreads. If it is determined that the unrealized loss can be attributed to credit loss, the Company records the amount of credit loss through a charge to provision for credit losses in current period earnings. However, the amount of credit loss recorded in current period earnings is limited to the amount of the total unrealized loss on the security, which is measured as the amount by which the security’s fair value is below its amortized cost. If it is likely the Company will be required to sell the security in an unrealized loss position, the total amount of the loss is recognized in current period earnings. Unrealized losses deemed non-credit related are recorded, net of tax, through accumulated other comprehensive income.
Allowance for Credit Losses on Loans	Allowance for Credit Losses on Loans. The Company accounts for credit losses on loans in accordance with ASC 326, which requires the Company to record an estimate of expected lifetime credit losses for loans at the time of origination or acquisition. The ACL is maintained at a level deemed appropriate by management to provide for current expected future credit losses in the portfolio as of the date of the consolidated statements of financial condition. Estimating expected credit losses requires management to use relevant forward-looking information, including the use of reasonable and supportable forecasts. The measurement of the ACL is performed by collectively evaluating loans with similar risk characteristics. The Company measures the ACL on commercial real estate loans and commercial loans using a discounted cash flow approach, and a historical loss rate methodology is used to determine the ACL on retail loans. The Company’s discounted cash flow methodology incorporates a probability of default and loss given default model, as well as expectations of future economic conditions, using reasonable and supportable forecasts. Together, the probability of default and loss given default model with the use of reasonable and supportable forecasts generate estimates for cash flows expected and not expected to be collected over the estimated life of a loan. Estimates of future expected cash flows ultimately reflect assumptions made concerning net credit losses over the life of a loan. The use of reasonable and supportable forecasts requires significant judgment, such as selecting forecast scenarios and related scenario-weighting, as well as determining the appropriate length of the forecast horizon. Management leverages economic projections from a reputable and independent third party to inform and provide its reasonable and supportable economic forecasts. Other internal and external indicators of economic forecasts may also be considered by management when developing the forecast metrics. The Company’s ACL model reverts to long-term average loss rates for purposes of estimating cash flows beyond a period deemed reasonable and supportable. The Company forecasts probability of default and loss given default based on economic forecast scenarios over a two-year time horizon before reverting to long-term average loss rates over a period of three years. The duration of the forecast horizon, the period over which forecasts revert to long-term averages, the economic forecasts that management utilizes, as well as additional internal and external indicators of economic forecasts that management considers, may change over time depending on the nature and composition of our loan portfolio. Changes in economic forecasts, in conjunction with changes in loan specific attributes, impact a loan’s probability of default and loss given default, which can drive changes in the determination of the ACL. Expectations of future cash flows are discounted at the loan’s effective interest rate. The resulting ACL term loans represents the amount by which the loan’s amortized cost exceeds the net present value of a loan’s discounted cash flows expected to be collected. The ACL for credit facilities is determined by discounting estimates for cash flows not expected to be collected. The ACL is recorded through a charge to provision for credit losses and is reduced by charge-offs, net of recoveries on loans previously charged-off. It is the Company’s policy to charge-off loan balances at the time they have been deemed uncollectible. Please also see Note 7 - Allowance for Credit Losses , of these consolidated financial statements for additional discussion concerning the Company’s ACL methodology, including discussion concerning economic forecasts used in the determination of the ACL. The Company’s ACL model also includes adjustments for qualitative factors, where appropriate. Since historical information (such as historical net losses and economic cycles) may not always, by itself, provide a sufficient basis for determining future expected credit losses, the Company periodically considers the need for qualitative adjustments to the ACL. Qualitative adjustments may be related to and include, but not limited to factors such as: (i) management’s assessment of economic forecasts used in the model and how those forecasts align with management’s overall evaluation of current and expected economic conditions, (ii) organization specific risks such as credit concentrations, collateral specific risks, regulatory risks, and external factors that may ultimately impact credit quality, (iii) potential model limitations such as limitations identified through back-testing, and other limitations associated with factors such as underwriting changes, acquisition of new portfolios and changes in portfolio segmentation, and (iv) management’s overall assessment of the adequacy of the ACL, including an assessment of model data inputs used to determine the ACL. The Company has a credit portfolio review process designed to detect problem loans. Problem loans are typically those of a substandard or worse internal risk grade, and may consist of loans on nonaccrual status, troubled debt restructurings (“TDRs”), loans where the likelihood of foreclosure on underlying collateral has increased, collateral dependent loans and other loans where concern or doubt over the ultimate collectability of all contractual amounts due has become elevated. Such loans may, in the opinion of management, be deemed to no longer possess risk characteristics similar to other loans in the loan portfolio, and as such may require individual evaluation to determine an appropriate ACL for the loan. When a loan is individually evaluated, the Company typically measures the expected credit loss for the loan based on a discounted cash flow approach, unless the loan has been deemed collateral dependent. Collateral dependent loans are loans where the repayment of the loan is expected to come from the operation of and/or eventual liquidation of the underlying collateral. The ACL for collateral dependent loans is determined using estimates for the expected fair value of the underlying collateral, less costs to sell. Although management uses the best information available to derive estimates necessary to measure an appropriate level of ACL, future adjustments to the ACL may be necessary due to economic, operating, regulatory, and other conditions that may extend beyond the Company’s control. Additionally, various regulatory agencies, as an integral part of their examination process, periodically review the Company’s ACL and credit review process. Such agencies may require the Company to recognize additions to the ACL based on judgments different from those of management.
Loans Held for Investment/Investor Loans Secured by Real Estate/Acquired Loans	Loans Held for Investment. Loans held for investment are loans the Company has the ability and intent to hold until their maturity. These loans are carried at amortized cost, including discounts and premiums on purchased and acquired loans, and net deferred loan origination fees and costs. Purchase discounts and premiums and net deferred loan origination fees and costs on loans are accreted or amortized as an adjustment of yield, using the interest method, over the expected lives of the loans. Income recognition of deferred loan fees, deferred loan costs, discounts and premiums is discontinued for loans that are placed on nonaccrual. Any remaining discounts, premiums, deferred loan fees or costs, and prepayment fees associated with loan payoffs prior to contractual maturity are included in loan interest income in the period of payoff. Loan commitment fees received to originate or purchase a loan are deferred and, if the commitment is exercised, recognized over the life of the loan using the interest method as an adjustment of yield or, if the commitment expires unexercised, recognized as income upon expiration of the commitment. The Company accrues interest on loans using the interest method and only if deemed collectible. Loans for which the accrual of interest has been discontinued are designated as nonaccrual loans. The accrual of interest on loans is discontinued when principal or interest is past due 90 days or more based on the contractual terms of the loan or when, in the opinion of management, there is reasonable doubt as to collection of principal and or interest. When loans are placed on nonaccrual status, previously accrued and uncollected interest is promptly reversed against current period interest income, and as such an ACL for accrued interest receivable is not established. Interest income generally is not recognized on nonaccrual loans unless the likelihood of further loss is remote. Interest payments received on nonaccrual loans are applied as a reduction to the loan principal balance. Interest accruals are resumed on such loans only when they are brought current with respect to interest and principal and when, in the judgment of management, the loans are estimated to be fully collectible as to all principal and interest. Investor Loans Secured by Real Estate: • Commercial real estate non-owner-occupied - Commercial real estate (“CRE”) non-owner-occupied includes loans for which the Company holds real property as collateral, but where the borrower does not occupy the underlying property. The primary risks associated with these loans include the borrower’s inability to pay, material decreases in the value of the real estate that is being held as collateral, significant increases in interest rates , changes in market rents, and vacancy of the underlying property, any of which may make the real e state loan unprofitable to the borrower. Real estate loans may be more adversely affected by conditions in the real estate markets or in the general economy. • Multifamily - Multifamily loans are secured by multi-tenant (5 or more units) residential real properties. Payments on multifamily loans are dependent on the successful operation or management of the properties, and repayment of these loans may be subject to adverse conditions in the real estate market or the economy. • Construction and land - We originate loans for the construction of one-to-four family and multifamily residences and CRE properties in our primary market area. We concentrate our origination efforts on single homes and infill multifamily and commercial projects in established neighborhoods where there is not abundant land available for development. Construction loans are considered to have higher risks due to construction completion and timing risk, and the ultimate repayment being sensitive to interest rate changes, government regulation of real property, and the availability of long-term financing. Additionally, economic conditions may impact the Company’s ability to recover its investment in construction loans, as adverse economic conditions may negatively impact the real estate market, which could affect the borrower’s ability to complete and sell the project. Additionally, the fair value of the underlying collateral may fluctuate as market conditions change. We occasionally originate land loans located predominantly in California for the purpose of facilitating the ultimate construction of a home or commercial building. The primary risks include the borrower’s inability to pay and the inability of the Company to recover its investment due to a decline in the fair value of the underlying collateral. Business Loans Secured by Real Estate: • Commercial real estate owner-occupied - CRE owner-occupied includes loans for which the Company holds real property as collateral and where the underlying property is occupied by the borrower, such as with a place of business. These loans are primarily underwritten based on the cash flows of the business and secondarily on the real estate. The primary risks associated with CRE owner-occupied loans include the borrower’s inability to pay, material decreases in the value of the real estate that is being held as collateral, and significant increases in interest rates, which may make the real estate loan unprofitable to the borrower. Real estate loans may be more adversely affected by conditions in the real estate markets or in the general economy. • Franchise secured by real estate - Franchise real estate secured loans are business loans secured by real property occupied by franchised restaurants, generally quick-service restaurants. These loans are primarily underwritten based on the cash flows of the business and secondarily on the real estate. Risks associated with these loans include material decreases in the value of real estate being held as collateral, and the borrower’s inability to pay as a result of increases in interest rates or decreases in cash flow from the underlying business. • Small Business Administration (“SBA”) - We are approved to originate loans under the SBA’s Preferred Lenders Program (“PLP”). The PLP lending status affords us a higher level of delegated credit autonomy, translating to a significantly shorter turnaround time from application to funding, which is critical to our marketing efforts. We originate loans nationwide under the SBA’s 7(a), SBA Express, International Trade, and 504(a) loan programs, in conformity with SBA underwriting and documentation standards. SBA loans are similar to commercial business loans, but have additional credit enhancement provided by the U.S. Small Business Administration, for up to 85% of the loan amount for loans up to $150,000 and 75% of the loan amount for loans of more than $150,000. However, as part of the Consolidated Appropriations Act of 2021, the credit enhancement provided by the SBA under the 7(a) program was temporarily increased to 90% through September 30, 2021. The Company originates SBA loans with the intent to sell the guaranteed portion into the secondary market on a quarterly basis. Certain loans classified as SBA are secured by commercial real estate property. SBA loans secured by hotels are included in the segment investor loans secured by real estate, and SBA loans secured by all other forms of real estate are included in the business loans secured by real estate segment. All other SBA loans are included in the commercial loans segment below, and are secured by business assets. Commercial Loans: • Commercial and industrial (including franchise commercial loans) (“C&I”) - Loans to businesses, secured by business assets including inventory, receivables, and machinery and equipment . Loan types include revolving lines of credit, term loans, seasonal loans, and loans secured by liquid collateral such as cash deposits or marketable securities. Franchise credit facilities not secured by real estate and Home Owners’ Association (“HOA”) credit facilities are included in C&I loans. We also issue letters of credit on behalf of our customers. Risk arises primarily due to the difference between expected and actual cash flows of the borrowers. In addition, the recoverability of the Company’s investment in these loans is also dependent on other factors primarily dictated by the type of collateral securing these loans, and occasionally upon other borrower assets and guarantor assets. The fair value of the collateral securing these loans may fluctua te as market conditions change. In the case of loans secured by accounts receivable, the recovery of the Company’s investment is dependent upon the borrower’s ability to collect amounts due from its customers. Retail Loans: • One-to-four family - Although we do not originate first lien single family loans, we have acquired them through bank acquisitions. The primary risks of one-to-four family loans include the borrower’s inability to pay, material decreases in the value of the real estate that is being held as collateral, and significant increases in interest rates, which may make loans unprofitable to the borrower. • Consumer loans - In addition to consumer loans acquired through our various bank acquisitions, we originate a limited number of consumer loans, generally to banking clients, which consist primarily of home equity lines of credit, savings account secured loans, and auto loans. Repayment of these loans is dependent on the borrower’s ability to pay and the fair value of the underlying collateral. Acquired Loans. When the Company acquires loans through purchase or a business combination, an assessment is first performed to determine if such loans have experienced more than insignificant deterioration in credit quality since their origination and thus should be classified and accounted for as purchased credit deteriorated (“PCD”) loans or otherwise classified as non-PCD loans. All acquired loans are recorded at their fair value as of the date of acquisition, with any resulting discount or premium accreted or amortized into interest income over the remaining life of the loan using the interest method. Additionally, upon the purchase or acquisition of non-PCD loans, the Company measures and records an ACL based on the Company’s methodology for determining the ACL. The ACL for non-PCD loans is recorded through a charge to the provision for credit losses in the period in which the loans were purchased or acquired. Unlike non-PCD loans, the initial ACL for PCD loans is established through an adjustment to the acquired loan balance and not through a charge to the provision for credit losses in the period in which the loans were acquired. The ACL for PCD loans is determined with the use of the Company’s ACL methodology. Characteristics of PCD loans include: delinquency, downgrade in credit quality since origination, loans on nonaccrual status, and/or other factors the Company may become aware of through its initial analysis of acquired loans that may indicate there has been more than insignificant deterioration in credit quality since a loan’s origination. Subsequent to acquisition, the ACL for both non-PCD and PCD loans are measured with the use of the Company’s ACL methodology in the same manner as all other loans. In connection with the Opus acquisition on June 1, 2020, the Company acquired PCD loans with an aggregate fair value of approximately $841.2 million, and recorded an ACL of approximately $21.2 million, which was added to the amortized cost of the loans on the date of acquisition.
Troubled Debt Restructurings	Troubled Debt Restructurings (“TDRs”). From time to time, the Company makes modifications to certain loans when a borrower is experiencing financial difficulty. These modifications are made to alleviate temporary impairments in the borrower’s financial condition and/or constraints on the borrower’s ability to repay the loan, and to minimize potential losses to the Company. Modifications typically include: changes in the amortization terms of the loan, reductions in interest rates, acceptance of interest only payments, and, in limited cases, reductions to the outstanding loan balance. Such loans are typically placed on nonaccrual status and are returned to accrual status when all contractual amounts past due have been brought current, and the borrower’s performance under the modified terms of the loan agreement and the ultimate collectability of all contractual amounts due under the modified terms is no longer in doubt. The Company typically measures the ACL for TDRs on an individual basis when the loans are deemed to no longer share similar risk characteristics with other loans in the portfolio. The determination of the ACL for TDRs is based on a discounted cash flow approach for both those measured collectively and individually, unless the loan is deemed collateral dependent, which requires measurement of the ACL based on the estimated expected fair value of the underlying collateral, less costs to sell. The CARES Act, signed into law on March 27, 2020, permits financial institutions to suspend requirements under GAAP for loan modifications to borrowers affected by COVID-19 that would otherwise be characterized as TDRs and suspend any determination related thereto if (i) the loan modification is made between March 1, 2020 and the earlier of December 31, 2020 or 60 days after the end of the coronavirus emergency declaration and (ii) the applicable loan was not more than 30 days past due as of December 31, 2019. The Consolidated Appropriations Act (“CAA”), signed into law on December 27, 2020, extends the applicable period to include modification to loans held by financial institutions executed between March 1, 2020 and the earlier of (i) January 1, 2022, or (ii) 60 days after the date of termination of the COVID-19 national emergency. The Company has elected to apply this guidance to certain qualifying loan modifications. For such modifications, which are in the form of payment deferrals, the delinquency status will not advance, and loans that were accruing at the time that the relief was provided will generally not be placed on nonaccrual status during the deferral period. Interest income will continue to be recognized over the contractual life of the loan. However, the Company, through its credit portfolio management activities, continues to monitor facts and circumstances associated with the underlying credit quality of the loans modified under the provisions of the CARES Act
Other Real Estate Owned (“OREO”)	Other Real Estate Owned (“OREO”). Real estate properties acquired through, or in lieu of, loan foreclosure are recorded at fair value, less cost to sell, with any excess of the loan’s amortized cost balance over the fair value of the property recorded as a charge against the ACL. The Company obtains an appraisal and/or market valuation on all other real estate owned at the time of possession. After foreclosure, valuations are periodically performed by management. Any subsequent declines in fair value are recorded as a charge to non-interest expense in current period earnings with a corresponding write-down to the asset. All legal fees and direct costs, including foreclosure and other related costs, are expensed as incurred.
Derivatives as Part of Designated Accounting Hedges	Derivatives as Part of Designated Accounting Hedges. The Company applies hedge accounting to certain derivative instruments used for risk management purposes, primarily interest rate risk. To qualify for hedge accounting, a derivative instrument must be highly effective at reducing the risk associated with the hedged exposure, and the hedging relationship must be formally documented at its inception. The Company uses regression analysis to assess the effectiveness of each hedging relationship, unless the hedge qualifies for other methods of assessing effectiveness (e.g., shortcut or critical terms match), both at inception and throughout the life of the hedge transaction. The Company currently has derivative instruments designated as part of fair value hedges for accounting purposes. These derivatives consist of pay-fixed, receive-floating interest rate swaps, and were entered into to hedge changes in the fair value of fixed-rate assets for specific risks, such as interest rate risk resulting from changes in a benchmark interest rate. In a qualifying fair value hedge, the Company records periodic changes in the fair value of the derivative instrument in current period earnings. Simultaneously, periodic changes in the fair value of the hedged risk are also recorded in current period earnings. Together, these periodic changes in the fair value of the derivative instrument and the fair value of the hedged risk are included in the same line item of the statements of income associated with the hedged item (i.e. interest income), and largely offset each other. Interest accruals on both the derivative instrument and the hedged item are also recorded in the same line item, which effectively converts the designated fixed-rate assets to floating-rate assets. The Company structures these swaps to match the critical terms of the hedged items (i.e. fixed-rate loans), thereby maximizing the economic and accounting effectiveness of the hedging relationships and resulting in the expectation that the hedging relationship will be highly effective. If a fair value hedging relationship ceases to qualify for hedge accounting, hedge accounting is discontinued and future changes in the fair value of the derivative instrument are recognized in current period earnings, until the derivative is settled with the counterparty. In addition, all remaining basis adjustments resulting from periodic changes in the fair value of the hedged risk, previously recorded to the carrying amount of the hedged item, are now amortized or accreted into interest income using the interest method over the remaining life of the hedged item.
Use of Estimates	Use of Estimates. The preparation of financial statements in conformity with 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. Actual results could differ from those estimates.
Fair Value Measurement	The fair value of an asset or liability is the exchange price that would be received to sell that asset or paid to transfer that liability (exit price) in an orderly transaction occurring in the principal market (or most advantageous market in the absence of a principal market) for such asset or liability. In estimating fair value, the Company utilizes valuation techniques that are consistent with the market approach, the income approach, and/or the cost approach. Such valuation techniques are consistently applied. Inputs to valuation techniques include the assumptions that market participants would use in pricing an asset or liability. ASC Topic 825 requires disclosure of the fair value of financial assets and financial liabilities, including both those financial assets and financial liabilities that are not measured and reported at fair value on a recurring basis and a non-recurring basis. The methodologies for estimating the fair value of financial assets and financial liabilities that are measured at fair value are discussed below. In accordance with accounting guidance, the Company groups its financial assets and financial liabilities measured at fair value in three levels, based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy are described as follows: Level 1 - Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities. Level 2 - Inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. These might include quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (such as interest rates, prepayment speeds, volatilities, etc.), or model-based valuation techniques where all significant assumptions are observable, either directly or indirectly, in the market. Level 3 - Valuation is generated from model-based techniques where one or more significant inputs are not observable, either directly or indirectly, in the market. These unobservable assumptions reflect the Company’s own estimates of assumptions that market participants would use in pricing the asset or liability. Valuation techniques may include use of matrix pricing, discounted cash flow models, and similar techniques. Because no market exists for a significant portion of the Company’s financial instruments, fair value estimates are based on judgments regarding current economic conditions, risk characteristics of various financial instruments, and other factors. These estimates are subjective in nature, and involve uncertainties and matters of significant judgment and, therefore, cannot be determined with precision. Changes in assumptions could significantly affect the fair values presented. Management uses its best judgment in estimating the fair value of the Company’s financial instruments; however, there are inherent limitations in any estimation technique. While management believes the Company’s valuation methodologies are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different estimate of fair value at the reporting date. The Company’s valuation methodologies may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. A financial instrument’s level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. Management maximizes the use of observable inputs and attempts to minimize the use of unobservable inputs when determining fair value measurements. Estimated fair values are disclosed for financial instruments for which it is practicable to estimate fair value. These estimates are made at a specific point in time based on relevant market data and information about the financial instruments. These estimates do not reflect any premium or discount that could result from offering the Company’s entire holdings of a particular financial instrument for sale at one time, nor do they attempt to estimate the value of anticipated future business related to the instruments. In addition, the tax ramifications related to the realization of unrealized gains and losses can have a significant effect on fair value estimates and have not been considered in any of these estimates. Assets and Liabilities Measured at Fair Value on a Recurring Basis The following is a description of both the general and specific valuation methodologies used to measure financial assets and liabilities on a recurring basis, as well as the general classification of these instruments pursuant to the fair value hierarchy. Investment Securities – Investment securities are generally valued based upon quotes obtained from independent third-party pricing services, which use evaluated pricing applications and model processes. Observable market inputs, such as, benchmark yields, reported trades, broker/dealer quotes, issuer spreads, two-sided markets, benchmark securities, bids, offers, and reference data are considered as part of the evaluation. The inputs are related directly to the security being evaluated, or indirectly to a similarly situated security. Market assumptions and market data are utilized in the valuation models. The Company reviews the market prices provided by the third-party pricing service for reasonableness based on the Company’s understanding of the market place and credit issues related to the securities. The Company has not made any adjustments to the market quotes provided by them and, accordingly, the Company categorized its investment portfolio within Level 2 of the fair value hierarchy. Interest Rate Swaps – The Company originates a variable rate loan and enters into a variable-to-fixed interest rate swap with the customer. The Company also enters into an offsetting swap with a correspondent bank. These back-to-back swap 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 Company also enters into interest rate swap contracts with institutional counterparties to hedge against certain fixed-rate loans. 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 market standard discounted cash flow approach. The Company incorporates credit value adjustments on derivatives to properly reflect the respective counterparty’s nonperformance risk in the fair value measurements of its derivatives. The Company has determined that the observable nature of the majority of inputs used in deriving the fair value of these derivative contracts fall within Level 2 of the fair value hierarchy, and the credit valuation adjustments are not significant to the overall valuation of its derivative financial instruments. As a result, the valuation of interest rate swaps is classified as Level 2 of the fair value hierarchy. Equity Warrant Assets – The Company acquired equity warrant assets as a result of acquisition of Opus. Opus received equity warrant assets through its lending activities as part of loan origination fees. The warrants provide the Bank the right to purchase a specific number of equity shares of the underlying company’s equity at a certain price before expiration and contain net settlement terms qualifying as derivatives under ASC Topic 815. The fair value of equity warrant assets is determined using a Black-Scholes option pricing model and are classified as Level 3 with the fair value hierarchy due to the extent of unobservable inputs. The key assumptions used in determining the fair value include the exercise price of the warrants, valuation of the underlying entity's outstanding stock, expected term, risk-free interest rate, marketability discount for private company warrants, and price volatility. Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis Individually Evaluated Loans – A loan is individually evaluated for expected credit losses when it does not share similar risk characteristics with other loans. Individually evaluated loans are measured based on the fair value of the underlying collateral or the discounted expected future cash flows. Collateral generally consists of accounts receivable, inventory, fixed assets, real estate, and cash. The Company measures impairment on all nonaccrual loans for which it has reduced the principal balance to the value of the underlying collateral less the anticipated selling cost. The fair value of individually evaluated loans were determined using Level 3 assumptions, and represents individually evaluated loan balances for which a specific reserve has been established or on which a write down has been taken. For real estate loans, generally, the Company obtains third party appraisals (or property valuations) and/or collateral audits in conjunction with internal analysis based on historical experience on its individually evaluated loans and other real estate owned to determine fair value. In determining the net realizable value of the underlying collateral for individually evaluated loans, the Company will then discount the valuation to cover both market price fluctuations and selling costs, typically ranging from 7% to 10% of the collateral value, that the Company expected would be incurred in the event of foreclosure. In addition to the discounts taken, the Company’s calculation of net realizable value considered any other senior liens in place on the underlying collateral. For non-real estate loans, fair value of the loan’s collateral may be determined using an appraisal, net book value per the borrower’s financial statements, or aging reports, adjusted or discounted based on management’s historical knowledge, changes in market conditions, and management’s expertise and knowledge of the client and client’s business.

Acquisitions (Tables)

Acquisitions (Tables)	9 Months Ended
	Sep. 30, 2021
Business Combination and Asset Acquisition [Abstract]
Summary of total transaction consideration value	The value of the total transaction consideration paid amounted to approximately $749.6 million. The Opus warrants assumed by the Corporation expired unexercised as of September 30, 2020 and no longer remain outstanding. The Opus options assumed by the Corporation were fully exercised during the third quarter of 2020. (Dollars in thousands) May 29, 2020 Merger consideration Value of stock consideration paid to shareholders $ 747,458 Cash paid in lieu of fractional shares 2 Value of restricted stock awards 328 Value of options and warrants (1) 1,817 Total merger consideration $ 749,605 ______________________________ (1) The Opus warrants assumed by the Corporation expired unexercised on September 30, 2020 and no longer remain outstanding. The Opus options assumed by the Corporation were fully exercised during the third quarter of 2020.
Schedule of assets acquired and liabilities assumed	The following table summarizes the estimated fair value of assets acquired and liabilities assumed of Opus as of June 1, 2020 under the acquisition method of accounting, net of purchase accounting adjustments: (Dollars in thousands) June 1, 2020 Net identifiable assets acquired, at fair value Assets acquired Cash and cash equivalents $ 937,102 Interest bearing time deposits with financial institutions 137 Investment securities 829,891 Loans 5,809,451 Allowance for credit losses (21,242) Premises and equipment 22,121 Intangible assets 19,267 Deferred tax assets 43,395 Other assets 369,169 Total assets acquired $ 8,009,291 Liabilities assumed Deposits $ 6,915,990 FHLB advances and other borrowings 213,491 Subordinated debt 138,653 Other liabilities 84,542 Total liabilities assumed 7,352,676 Total fair value of net identifiable assets 656,615 Total merger consideration 749,605 Goodwill recognized $ 92,990
Summary of pro forma financial information	The following table presents certain unaudited pro forma financial information for illustrative purposes only, for the three and nine months ended September 30, 2020 as if Opus had been acquired on January 1, 2020. This unaudited pro forma information combines the historical results of Opus with the Company’s consolidated historical results and includes certain adjustments reflecting the estimated impact of certain fair value adjustments for the respective periods. The pro forma information is not indicative of what would have occurred had the acquisition occurred as of the beginning of the year prior to the acquisition. The unaudited pro forma information does not consider any changes to the provision for credit losses resulting from recording loan assets at fair value, cost savings, or business synergies. As a result, actual amounts would have differed from the unaudited pro forma information presented, and the differences could be significant. Three Months Ended Nine Months Ended (Dollar in thousands, except per share data) September 30, 2020 September 30, 2020 Net interest and other income $ 193,304 $ 577,799 Net income (loss) 66,566 (78,570) Basic earnings (loss) per share 0.71 (0.84) Diluted earnings (loss) per share 0.70 (0.84)

Investment Securities (Tables)

Investment Securities (Tables)	9 Months Ended
	Sep. 30, 2021
Investments, Debt and Equity Securities [Abstract]
Schedule of amortized cost and estimated fair value of securities	The amortized cost and estimated fair value of investment securities available-for-sale were as follows: (Dollars in thousands) Amortized Gross Unrealized Gross Unrealized Estimated Investment securities available-for-sale: September 30, 2021 U.S. Treasury $ 77,803 $ 1,665 $ (126) $ 79,342 Agency 531,867 5,252 (7,026) 530,093 Corporate 383,910 5,381 (2,900) 386,391 Municipal bonds 1,237,923 27,585 (9,642) 1,255,866 Collateralized mortgage obligations 665,851 1,109 (4,729) 662,231 Mortgage-backed securities 1,807,758 6,194 (18,060) 1,795,892 Total investment securities available-for-sale $ 4,705,112 $ 47,186 $ (42,483) $ 4,709,815 December 31, 2020 U.S. Treasury $ 30,153 $ 2,380 $ — $ 32,533 Agency 666,702 24,292 (608) 690,386 Corporate 412,223 3,591 (506) 415,308 Municipal bonds 1,412,012 37,260 (3,253) 1,446,019 Collateralized mortgage obligations 513,259 819 (712) 513,366 Mortgage-backed securities 812,384 21,662 (543) 833,503 Total investment securities available-for-sale $ 3,846,733 $ 90,004 $ (5,622) $ 3,931,115 The carrying amount and estimated fair value of investment securities held-to-maturity were as follows: (Dollars in thousands) Amortized Allowance for Credit Losses Net Carrying Amount Gross Unrecognized Gross Unrecognized Estimated Investment securities held-to-maturity: September 30, 2021 Municipal bonds $ 154,399 $ (11) $ 154,388 $ — $ (2,225) $ 152,163 Mortgage-backed securities 14,656 — 14,656 803 — 15,459 Other 1,532 — 1,532 — — 1,532 Total investment securities held-to-maturity $ 170,587 $ (11) $ 170,576 $ 803 $ (2,225) $ 169,154 December 31, 2020 Mortgage-backed securities $ 22,124 $ — $ 22,124 $ 1,281 $ — $ 23,405 Other 1,608 — 1,608 — — 1,608 Total investment securities held-to-maturity $ 23,732 $ — $ 23,732 $ 1,281 $ — $ 25,013
Schedule of number, fair value and gross unrealized holding losses of the Company's investment securities by investment category and length of time that the securities have been in a continuous loss position	The table below summarizes the number, fair value, and gross unrealized holding losses of the Company’s investment securities available-for-sale in an unrealized loss position for which an allowance for credit losses has not been recorded as of the dates indicated, aggregated by investment category and length of time in a continuous loss position. September 30, 2021 Less than 12 Months 12 Months or Longer Total (Dollars in thousands) Number Fair Gross Number Fair Gross Number Fair Gross Investment securities available-for-sale: U.S. Treasury 2 $ 32,626 $ (126) — $ — $ — 2 $ 32,626 $ (126) Agency 24 339,270 (5,365) 12 64,991 (1,661) 36 404,261 (7,026) Corporate 8 88,666 (1,916) 1 20,346 (984) 9 109,012 (2,900) Municipal bonds 108 651,169 (9,102) 2 11,068 (540) 110 662,237 (9,642) Collateralized mortgage obligations 30 302,104 (4,297) 5 44,615 (432) 35 346,719 (4,729) Mortgage-backed securities. 113 1,570,327 (17,961) 1 7,395 (99) 114 1,577,722 (18,060) Total investment securities available-for-sale 285 $ 2,984,162 $ (38,767) 21 $ 148,415 $ (3,716) 306 $ 3,132,577 $ (42,483) December 31, 2020 Less than 12 Months 12 Months or Longer Total (Dollars in thousands) Number Fair Gross Number Fair Gross Number Fair Gross Investment securities available-for-sale: Agency 4 $ 74,194 $ (307) 9 $ 10,434 $ (301) 13 $ 84,628 $ (608) Corporate 9 71,226 (506) — — — 9 71,226 (506) Municipal bonds 56 312,894 (3,253) — — — 56 312,894 (3,253) Collateralized mortgage obligations 21 215,603 (710) 1 431 (2) 22 216,034 (712) Mortgage-backed securities 16 139,071 (543) — — — 16 139,071 (543) Total investment securities available-for-sale 106 $ 812,988 $ (5,319) 10 $ 10,865 $ (303) 116 $ 823,853 $ (5,622)
Schedule of investment securities by external credit rating	The following table summarizes the Company’s investment securities portfolio by Moody’s external rating equivalent and by vintage as of September 30, 2021: Vintage (Dollars in thousands) 2021 2020 2019 2018 2017 Prior Total Investment securities available-for-sale at fair value: U.S. Treasury Aaa - Aa3 $ 32,973 $ 14,634 $ — $ 21,274 $ 10,461 $ — $ 79,342 Agency Aaa - Aa3 24,393 324,241 44,487 76,415 — 46,390 515,926 Baa1 - Baa3 — — — 5,715 — 8,452 14,167 Corporate debt A1 - A3 79,252 57,799 — — 17,864 10,029 164,944 Baa1 - Baa3 36,473 100,614 70,704 — — 13,656 221,447 Municipal bonds Aaa - Aa3 118,941 725,524 294,323 32,429 50,536 33,264 1,255,017 A1 - A3 — — — — — 849 849 Collateralized mortgage obligations Aaa - Aa3 212,687 224,252 86,604 18,523 14,199 105,966 662,231 Mortgage-backed securities Aaa - Aa3 1,250,191 391,394 101,935 6,891 25,280 20,201 1,795,892 Total investment securities available-for-sale 1,754,910 1,838,458 598,053 161,247 118,340 238,807 4,709,815 Investment securities held-to-maturity at amortized cost: Municipal bonds Aaa - Aa3 — 154,399 — — — — 154,399 Mortgage-backed securities Aaa - Aa3 — — — 4,206 3,767 6,683 14,656 Other Baa1 - Baa3 — — — 600 — 932 1,532 Total investment securities held-to-maturity — 154,399 — 4,806 3,767 7,615 170,587 Total investment securities $ 1,754,910 $ 1,992,857 $ 598,053 $ 166,053 $ 122,107 $ 246,422 $ 4,880,402
Schedule of amortized cost and estimated fair value of investment securities available for sale by contractual maturity	The amortized cost and estimated fair value of investment securities at September 30, 2021, by contractual maturity, are shown in the table below. Due in One Year Due after One Year Due after Five Years Due after Total (Dollars in thousands) Amortized Fair Amortized Fair Amortized Fair Amortized Fair Amortized Fair Investment securities available-for-sale: U.S. Treasury $ — $ — $ 30,126 $ 31,734 $ 47,677 $ 47,608 $ — $ — $ 77,803 $ 79,342 Agency — — 352,023 353,184 135,567 134,426 44,277 42,483 531,867 530,093 Corporate 10,021 10,029 21,178 21,227 352,711 355,135 — — 383,910 386,391 Municipal bonds — — 3,528 3,731 95,420 96,849 1,138,975 1,155,286 1,237,923 1,255,866 Collateralized mortgage obligations — — 41,692 41,631 226,958 223,612 397,201 396,988 665,851 662,231 Mortgage-backed securities — — 12,098 12,704 709,280 709,155 1,086,380 1,074,033 1,807,758 1,795,892 Total investment securities available-for-sale 10,021 10,029 460,645 464,211 1,567,613 1,566,785 2,666,833 2,668,790 4,705,112 4,709,815 Investment securities held-to-maturity: Municipal bonds — — — — — — 154,399 152,163 154,399 152,163 Mortgage-backed securities — — — — — — 14,656 15,459 14,656 15,459 Other — — — — — — 1,532 1,532 1,532 1,532 Total investment securities held-to-maturity — — — — — — 170,587 169,154 170,587 169,154 Total investment securities $ 10,021 $ 10,029 $ 460,645 $ 464,211 $ 1,567,613 $ 1,566,785 $ 2,837,420 $ 2,837,944 $ 4,875,699 $ 4,878,969

Loans Held for Investment (Tabl

Loans Held for Investment (Tables)	9 Months Ended
	Sep. 30, 2021
Receivables [Abstract]
Schedule of components of loans held for investment	The following table presents the composition of the loan portfolio for the periods indicated: September 30, December 31, (Dollars in thousands) 2021 2020 Investor loans secured by real estate CRE non-owner-occupied $ 2,823,065 $ 2,675,085 Multifamily 5,705,666 5,171,356 Construction and land 292,815 321,993 SBA secured by real estate 49,446 57,331 Total investor loans secured by real estate 8,870,992 8,225,765 Business loans secured by real estate CRE owner-occupied 2,242,164 2,114,050 Franchise real estate secured 354,481 347,932 SBA secured by real estate 69,937 79,595 Total business loans secured by real estate 2,666,582 2,541,577 Commercial loans Commercial and industrial 1,888,870 1,768,834 Franchise non-real estate secured 392,950 444,797 SBA non-real estate secured 12,732 15,957 Total commercial loans 2,294,552 2,229,588 Retail loans Single family residential 144,309 232,574 Consumer 6,426 6,929 Total retail loans 150,735 239,503 Gross loans held for investment (1) 13,982,861 13,236,433 Allowance for credit losses for loans held for investment (211,481) (268,018) Loans held for investment, net $ 13,771,380 $ 12,968,415 Total unfunded loan commitments $ 2,504,188 $ 1,947,250 Loans held for sale, at lower of cost or fair value $ 8,100 $ 601 ______________________________ (1) Includes net deferred origination fees of $3.0 million and $2.6 million, and unaccreted fair value net purchase discounts of $85.0 million and $113.8 million as of September 30, 2021 and December 31, 2020, respectively.
Summary of loan portfolio by the company's internal risk grading system	The following table stratifies the loans held for investment portfolio by the Company’s internal risk grading, and by year of origination, as of September 30, 2021: Term Loans by Vintage (Dollars in thousands) 2021 2020 2019 2018 2017 Prior Revolving Revolving Converted to Term During the Period Total September 30, 2021 Investor loans secured by real estate CRE non-owner-occupied Pass $ 565,605 $ 268,733 $ 424,397 $ 462,395 $ 219,672 $ 823,208 $ 9,599 $ — $ 2,773,609 Special mention — — 16,263 1,943 — — — — 18,206 Substandard — — 25,775 — — 4,950 525 — 31,250 Multifamily Pass 1,694,447 1,012,346 1,348,563 526,744 501,849 619,628 218 — 5,703,795 Substandard — — — 543 556 772 — — 1,871 Construction and land Pass 86,107 125,190 51,733 22,134 3,996 3,607 48 — 292,815 SBA secured by real estate Pass 130 499 7,373 9,113 12,665 9,722 — — 39,502 Special mention — — — 962 — 548 — — 1,510 Substandard — — 9 2,353 3,170 2,902 — — 8,434 Total investor loans secured by real estate 2,346,289 1,406,768 1,874,113 1,026,187 741,908 1,465,337 10,390 — 8,870,992 Business loans secured by real estate CRE owner-occupied Pass 635,469 302,683 317,035 221,806 207,923 531,119 3,211 300 2,219,546 Special mention — — 6,078 1,741 — — — — 7,819 Substandard — — — 6,109 2,972 5,718 — — 14,799 Franchise real estate secured Pass 97,884 43,332 59,772 44,306 66,901 42,286 — — 354,481 SBA secured by real estate Pass 3,789 2,368 7,533 10,498 11,230 25,181 1,361 — 61,960 Special mention — — — — — 212 — — 212 Substandard — — — 1,326 3,000 3,439 — — 7,765 Total loans secured by business real estate 737,142 348,383 390,418 285,786 292,026 607,955 4,572 300 2,666,582 Term Loans by Vintage (Dollars in thousands) 2021 2020 2019 2018 2017 Prior Revolving Revolving Converted to Term During the Period Total September 30, 2021 Commercial loans Commercial and industrial Pass 260,359 89,545 204,683 139,560 156,915 78,951 906,369 2,059 1,838,441 Special mention — — 189 — — — 14,629 — 14,818 Substandard 650 1,759 552 2,854 867 1,570 26,619 740 35,611 Franchise non-real estate secured Pass 118,333 24,954 96,784 65,300 27,683 37,157 — — 370,211 Substandard — — 2,236 4,421 14,903 1,179 — — 22,739 SBA non-real estate secured Pass 152 653 1,424 938 3,239 3,567 — — 9,973 Special mention — — 698 117 — — — — 815 Substandard — — 78 338 247 617 664 — 1,944 Total commercial loans 379,494 116,911 306,644 213,528 203,854 123,041 948,281 2,799 2,294,552 Retail loans Single family residential Pass 20,201 3,518 1,967 1,633 6,954 86,711 23,274 — 144,258 Substandard — — — — — 51 — — 51 Consumer loans Pass 28 30 57 22 15 2,964 3,268 — 6,384 Substandard — — 6 — — 36 — — 42 Total retail loans 20,229 3,548 2,030 1,655 6,969 89,762 26,542 — 150,735 Totals gross loans $ 3,483,154 $ 1,875,610 $ 2,573,205 $ 1,527,156 $ 1,244,757 $ 2,286,095 $ 989,785 $ 3,099 $ 13,982,861 The following table stratifies the loans held for investment portfolio by the Company’s internal risk grading, and by year of origination, as of December 31, 2020: Term Loans by Vintage (Dollars in thousands) 2020 2019 2018 2017 2016 Prior Revolving Revolving Converted to Term During the Period Total December 31, 2020 Investor loans secured by real estate CRE non-owner-occupied Pass $ 265,901 $ 541,994 $ 440,351 $ 287,580 $ 279,238 $ 791,477 $ 11,114 $ — $ 2,617,655 Special mention — — 6,669 437 2,516 29,738 — — 39,360 Substandard — 9,732 2,045 — 516 5,218 559 — 18,070 Multifamily Pass 1,027,644 1,677,716 899,123 665,939 354,859 531,287 420 — 5,156,988 Special mention — 1,758 2,630 — 8,649 — — — 13,037 Substandard — — — 559 772 — — — 1,331 Construction and land Pass 57,309 144,759 73,313 18,625 20,531 6,672 784 — 321,993 SBA secured by real estate Pass — 8,306 9,029 13,418 6,305 7,696 — — 44,754 Special mention 496 1,032 1,159 1,000 373 306 — — 4,366 Substandard — 1,220 2,959 1,091 400 2,541 — — 8,211 Total investor loans secured by real estate 1,351,350 2,386,517 1,437,278 988,649 674,159 1,374,935 12,877 — 8,225,765 Business loans secured by real estate CRE owner-occupied Pass 293,324 409,758 332,672 327,475 225,098 469,704 14,268 246 2,072,545 Special mention 2,190 15,917 3,802 — 4,153 201 — — 26,263 Substandard — — 3,636 4,214 1,169 5,973 250 — 15,242 Franchise real estate secured Pass 44,413 81,438 66,241 96,999 24,673 27,020 — — 340,784 Special mention 878 1,650 2,652 — — — — — 5,180 Substandard — — — — 1,968 — — — 1,968 SBA secured by real estate Pass 3,253 7,637 12,608 16,058 8,488 23,624 — — 71,668 Special mention — — 1,200 — 137 — — — 1,337 Substandard — — 184 1,987 1,376 3,043 — — 6,590 Total loans secured by business real estate 344,058 516,400 422,995 446,733 267,062 529,565 14,518 246 2,541,577 Term Loans by Vintage (Dollars in thousands) 2020 2019 2018 2017 2016 Prior Revolving Revolving Converted to Term During the Period Total December 31, 2020 Commercial loans Commercial and industrial Pass 127,082 260,368 159,001 210,163 51,800 82,291 801,752 9,315 1,701,772 Special mention 735 — 2,331 185 1,320 243 17,890 37 22,741 Substandard — 3,310 2,737 610 1,333 2,446 32,858 1,027 44,321 Franchise non-real estate secured Pass 27,607 164,025 94,494 46,174 40,829 27,745 1,361 502 402,737 Special mention — 7,267 2,037 230 480 2,321 — — 12,335 Substandard — 6,690 3,706 18,425 700 204 — — 29,725 SBA non-real estate secured Pass 407 2,257 1,558 2,674 610 4,449 — 259 12,214 Special mention — — — 1,574 — — — — 1,574 Substandard — 83 357 282 340 400 707 — 2,169 Total commercial loans 155,831 444,000 266,221 280,317 97,412 120,099 854,568 11,140 2,229,588 Retail loans Single family residential Pass 10,794 7,714 13,982 14,039 33,968 124,248 27,172 — 231,917 Substandard — — — — — 657 — — 657 Consumer loans Pass 52 112 37 25 2 3,145 3,508 — 6,881 Substandard — 7 — — — 41 — — 48 Total retail loans 10,846 7,833 14,019 14,064 33,970 128,091 30,680 — 239,503 Totals gross loans $ 1,862,085 $ 3,354,750 $ 2,140,513 $ 1,729,763 $ 1,072,603 $ 2,152,690 $ 912,643 $ 11,386 $ 13,236,433 The following tables present PD bands for commercial real estate and commercial loan segments of the loan portfolio as of the dates indicated. Commercial Real Estate and Commercial Term Loans by PD and Vintage (Dollars in thousands) 2021 2020 2019 2018 2017 Prior Revolving Revolving Converted to Term During the Period Total September 30, 2021 Investor loans secured by real estate CRE non-owner-occupied 0% - 5.00% $ 530,275 $ 239,267 $ 392,557 $ 421,922 $ 198,651 $ 722,951 $ 4,270 $ — $ 2,509,893 >5.00% - 10.00% 35,330 24,645 23,757 9,755 11,088 53,696 5,329 — 163,600 Greater than 10% — 4,821 50,121 32,661 9,933 51,511 525 — 149,572 Multifamily 0% - 5.00% 1,660,670 962,609 1,316,575 520,329 500,815 609,731 218 — 5,570,947 >5.00% - 10.00% 28,718 49,737 31,988 6,958 1,590 8,314 — — 127,305 Greater than 10% 5,059 — — — — 2,355 — — 7,414 Construction and Land 0% - 5.00% 56,187 82,557 2,329 991 3,996 3,607 48 — 149,715 >5.00% - 10.00% 21,654 11,027 1,700 — — — — — 34,381 Greater than 10% 8,266 31,606 47,704 21,143 — — — — 108,719 SBA secured by real estate 0% - 5.00% 130 499 7,373 12,428 15,206 12,834 — — 48,470 >5.00% - 10.00% — — — — — — — — — Greater than 10% — — 9 — 629 338 — — 976 Total investor loans secured by real estate 2,346,289 1,406,768 1,874,113 1,026,187 741,908 1,465,337 10,390 — 8,870,992 Business loans secured by real estate CRE owner-occupied 0% - 5.00% 635,469 302,683 315,267 215,974 201,190 499,308 3,211 300 2,173,402 >5.00% - 10.00% — — 7,846 7,573 6,733 31,811 — — 53,963 Greater than 10% — — — 6,109 2,972 5,718 — — 14,799 Franchise real estate secured 0% - 5.00% 95,937 43,332 55,621 39,053 61,591 37,696 — — 333,230 >5.00% - 10.00% 812 — 4,151 5,253 5,310 4,590 — — 20,116 Greater than 10% 1,135 — — — — — — — 1,135 SBA secured by real estate 0% - 5.00% 3,789 2,368 6,237 9,605 8,900 16,909 — — 47,808 >5.00% - 10.00% — — 1,296 893 2,318 8,273 — — 12,780 Greater than 10% — — — 1,326 3,012 3,650 1,361 — 9,349 Total business loans secured by real estate 737,142 348,383 390,418 285,786 292,026 607,955 4,572 300 2,666,582 Commercial Real Estate and Commercial Term Loans by PD and Vintage (Dollars in thousands) 2021 2020 2019 2018 2017 Prior Revolving Revolving Converted to Term During the Period Total September 30, 2021 Commercial loans Commercial and industrial 0% - 5.00% 253,639 87,252 196,671 118,678 128,879 69,707 764,279 2,055 1,621,160 >5.00% - 10.00% 6,720 2,293 8,012 20,835 27,760 8,438 140,001 4 214,063 Greater than 10% 650 1,759 741 2,901 1,143 2,376 43,337 740 53,647 Franchise non-real estate secured 0% - 5.00% 108,905 19,246 63,233 59,636 22,735 15,697 — — 289,452 >5.00% - 10.00% 9,159 5,708 33,550 5,594 3,483 18,536 — — 76,030 Greater than 10% 269 — 2,237 4,491 16,368 4,103 — — 27,468 SBA not secured by real estate 0% - 5.00% 152 653 1,215 633 1,008 2,421 — — 6,082 >5.00% - 10.00% — — 209 305 2,231 1,137 — — 3,882 Greater than 10% — — 776 455 247 626 664 — 2,768 Total commercial loans $ 379,494 $ 116,911 $ 306,644 $ 213,528 $ 203,854 $ 123,041 $ 948,281 $ 2,799 $ 2,294,552 Commercial Real Estate and Commercial Term Loans by PD and Vintage (Dollars in thousands) 2020 2019 2018 2017 2016 Prior Revolving Revolving Converted to Term During the Period Total December 31, 2020 Investor loans secured by real estate CRE non-owner-occupied 0% - 5.00% $ 261,885 $ 491,522 $ 431,791 $ 266,942 $ 254,527 $ 763,101 $ 11,114 $ — $ 2,480,882 >5.00% - 10.00% 4,016 34,360 5,794 10,558 16,961 33,734 — — 105,423 Greater than 10% — 25,844 11,480 10,517 10,782 29,598 559 — 88,780 Multifamily 0% - 5.00% 950,089 1,610,011 878,233 634,268 349,549 516,452 — — 4,938,602 >5.00% - 10.00% 38,892 59,500 12,181 19,751 10,917 13,606 — — 154,847 Greater than 10% 38,663 9,963 11,339 12,479 3,814 1,229 420 — 77,907 Construction and land 0% - 5.00% 55,785 40,860 4,604 11,238 — 6,412 784 — 119,683 >5.00% - 10.00% 1,123 41,046 9,197 3,601 — 260 — — 55,227 Greater than 10% 401 62,853 59,512 3,786 20,531 — — — 147,083 SBA secured by real estate 0% - 5.00% 496 10,400 12,558 14,497 7,078 10,032 — — 55,061 >5.00% - 10.00% — — — 1,012 — — — — 1,012 Greater than 10% — 158 589 — — 511 — — 1,258 Total investor loans secured by real estate 1,351,350 2,386,517 1,437,278 988,649 674,159 1,374,935 12,877 — 8,225,765 Commercial Real Estate and Commercial Term Loans by PD and Vintage (Dollars in thousands) 2020 2019 2018 2017 2016 Prior Revolving Revolving Converted to Term During the Period Total December 31, 2020 Business loans secured by real estate CRE owner-occupied 0% - 5.00% 286,745 367,269 274,512 295,809 202,282 422,614 10,393 246 1,859,870 >5.00% - 10.00% 8,769 42,310 60,222 28,421 23,875 44,855 3,875 — 212,327 Greater than 10% — 16,096 5,376 7,459 4,263 8,409 250 — 41,853 Franchise real estate secured 0% - 5.00% 37,262 79,926 65,619 96,672 19,046 22,927 — — 321,452 >5.00% - 10.00% 7,587 1,650 3,274 327 5,627 4,093 — — 22,558 Greater than 10% 442 1,512 — — 1,968 — — — 3,922 SBA secured by real estate 0% - 5.00% 3,253 7,637 11,840 15,069 5,707 18,742 — — 62,248 >5.00% - 10.00% — — 768 989 2,780 4,882 — — 9,419 Greater than 10% — — 1,384 1,987 1,514 3,043 — — 7,928 Total business loans secured by real estate 344,058 516,400 422,995 446,733 267,062 529,565 14,518 246 2,541,577 Commercial loans Commercial and industrial 0% - 5.00% 70,233 205,395 99,178 193,046 36,957 62,682 394,124 5,051 1,066,666 >5.00% - 10.00% 49,883 50,743 35,813 13,427 12,922 13,948 322,123 2,469 501,328 Greater than 10% 7,701 7,540 29,078 4,485 4,574 8,350 136,253 2,859 200,840 Franchise non-real estate secured 0% - 5.00% 21,409 145,392 88,171 38,010 21,956 23,479 — 502 338,919 >5.00% - 10.00% 6,198 15,754 5,454 8,164 18,415 3,626 — — 57,611 Greater than 10% — 16,836 6,612 18,655 1,638 3,165 1,361 — 48,267 SBA not secured by real estate 0% - 5.00% 407 2,257 910 1,078 441 2,782 — — 7,875 >5.00% - 10.00% — — 648 1,596 169 1,652 — 259 4,324 Greater than 10% — 83 357 1,856 340 415 707 — 3,758 Total commercial loans $ 155,831 $ 444,000 $ 266,221 $ 280,317 $ 97,412 $ 120,099 $ 854,568 $ 11,140 $ 2,229,588 Term Loans by LTV and Vintage (Dollars in thousands) 2021 2020 2019 2018 2017 Prior Revolving Revolving Converted to Term During the Period Total September 30, 2021 Investor loans secured by real estate CRE non-owner-occupied 55% and below $ 291,909 $ 142,444 $ 188,747 $ 208,825 $ 127,768 $ 589,484 $ 9,599 — $ 1,558,776 >55-65% 220,116 89,488 193,461 104,301 79,960 204,683 525 — 892,534 >65-75% 53,580 36,801 64,165 146,402 8,118 32,513 — — 341,579 Greater than 75% — — 20,062 4,810 3,826 1,478 — — 30,176 Multifamily 55% and below 260,469 219,510 314,269 211,795 207,913 299,265 218 — 1,513,439 >55-65% 719,640 421,994 580,084 229,609 158,927 226,977 — — 2,337,231 >65-75% 703,894 367,815 442,661 85,883 133,716 85,918 — — 1,819,887 Greater than 75% 10,444 3,027 11,549 — 1,849 8,240 — — 35,109 Construction and land 55% and below 82,458 120,912 42,774 4,183 3,996 3,607 48 — 257,978 >55-65% — 4,278 6,630 17,951 — — — — 28,859 >65-75% 3,649 — 2,329 — — — — — 5,978 Greater than 75% — — — — — — — — — SBA secured by real estate 55% and below — — 9 637 695 2,177 — — 3,518 >55-65% — — 2,407 1,958 1,910 2,853 — — 9,128 >65-75% 130 — 3,870 4,606 4,461 5,544 — — 18,611 Greater than 75% — 499 1,096 5,227 8,769 2,598 — — 18,189 Total investor loans secured by real estate 2,346,289 1,406,768 1,874,113 1,026,187 741,908 1,465,337 10,390 — 8,870,992 Business loan secured by real estate CRE owner-occupied 55% and below 296,313 108,338 123,527 100,865 139,455 383,599 3,211 300 1,155,608 >55-65% 161,368 73,789 66,407 70,311 46,314 99,171 — — 517,360 >65-75% 126,160 87,909 123,495 52,679 16,909 37,740 — — 444,892 Greater than 75% 51,628 32,647 9,684 5,801 8,217 16,327 — — 124,304 Franchise real estate secured 55% and below 17,039 23,695 9,052 12,776 14,889 19,988 — — 97,439 >55-65% 39,872 2,622 11,055 10,137 4,804 10,129 — — 78,619 >65-75% 23,262 15,150 36,521 8,632 15,563 10,951 — — 110,079 Greater than 75% 17,711 1,865 3,144 12,761 31,645 1,218 — — 68,344 SBA secured by real estate 55% and below 2,547 591 1,897 1,127 5,146 14,667 1,361 — 27,336 >55-65% 186 556 199 1,513 1,306 7,513 — — 11,273 >65-75% 703 328 3,111 5,254 4,104 3,586 — — 17,086 Greater than 75% 353 893 2,326 3,930 3,674 3,066 — — 14,242 Total business loans secured by real estate $ 737,142 $ 348,383 $ 390,418 $ 285,786 $ 292,026 $ 607,955 $ 4,572 $ 300 $ 2,666,582 Term Loans by LTV and Vintage (Dollars in thousands) 2020 2019 2018 2017 2016 Prior Revolving Revolving Converted to Term During the Period Total December 31, 2020 Investor loans secured by real estate CRE non-owner-occupied 55% and below $ 138,007 $ 229,272 $ 182,385 $ 136,355 $ 189,848 $ 588,230 $ 11,114 $ — $ 1,475,211 >55-65% 101,434 217,210 92,015 130,024 78,470 204,161 559 — 823,873 >65-75% 26,460 102,494 169,878 18,876 13,952 29,506 — — 361,166 Greater than 75% — 2,750 4,787 2,762 — 4,536 — — 14,835 Multifamily 55% and below 218,833 345,519 294,464 233,997 84,530 269,906 — — 1,447,249 >55-65% 381,737 731,408 381,282 215,170 152,066 189,151 420 — 2,051,234 >65-75% 427,074 583,078 215,389 215,452 127,684 66,457 — — 1,635,134 Greater than 75% — 19,469 10,618 1,879 — 5,773 — — 37,739 Construction and land 55% and below 57,309 105,308 36,068 18,625 20,531 6,672 784 — 245,297 >55-65% — 36,113 23,770 — — — — — 59,883 >65-75% — 3,338 13,475 — — — — — 16,813 Greater than 75% — — — — — — — — — SBA secured by real estate 55% and below — 2,066 649 673 317 778 — — 4,483 >55-65% — 2,427 1,639 4,008 879 4,354 — — 13,307 >65-75% — 3,897 3,882 3,482 4,519 1,884 — — 17,664 Greater than 75% 496 2,168 6,977 7,346 1,363 3,527 — — 21,877 Total investor loans secured by real estate 1,351,350 2,386,517 1,437,278 988,649 674,159 1,374,935 12,877 — 8,225,765 Business loan secured by real estate CRE owner-occupied 55% and below 96,803 160,605 157,868 179,791 131,795 328,188 14,518 246 1,069,814 >55-65% 72,044 91,028 98,176 94,712 65,120 90,548 — — 511,628 >65-75% 71,692 152,920 79,106 43,832 31,303 31,493 — — 410,346 Greater than 75% 54,975 21,122 4,960 13,354 2,202 25,649 — — 122,262 Franchise real estate secured 55% and below 20,801 10,470 13,864 20,956 9,189 16,213 — — 91,493 >55-65% 2,689 9,955 16,001 19,102 6,855 2,333 — — 56,935 >65-75% 19,349 51,719 23,258 9,153 10,597 7,236 — — 121,312 Greater than 75% 2,452 10,944 15,770 47,788 — 1,238 — — 78,192 SBA secured by real estate 55% and below 1,825 1,626 5,332 5,495 3,615 13,582 — — 31,475 >55-65% 246 513 1,795 1,094 3,586 5,448 — — 12,682 >65-75% 264 3,142 1,515 3,968 1,586 4,043 — — 14,518 Greater than 75% 918 2,356 5,350 7,488 1,214 3,594 — — 20,920 Total business loans secured by real estate $ 344,058 $ 516,400 $ 422,995 $ 446,733 $ 267,062 $ 529,565 $ 14,518 $ 246 $ 2,541,577 The following tables present the FICO bands, at origination, for the retail segment of the loan portfolio as of the dates indicated: Term Loans by FICO and Vintage (Dollars in thousands) 2021 2020 2019 2018 2017 Prior Revolving Revolving Converted to Term During the Period Total September 30, 2021 Retail loans Single family residential Greater than 740 $ 20,201 $ 3,518 $ 1,967 $ 1,599 $ 3,319 $ 53,609 $ 17,213 — $ 101,426 >680 - 740 — — — 34 3,172 9,756 5,271 — 18,233 >580 - 680 — — — — 453 9,301 757 — 10,511 Less than 580 — — — — 10 14,096 33 — 14,139 Consumer loans Greater than 740 27 30 37 22 12 2,500 1,325 — 3,953 >680 - 740 1 — 19 — 3 441 1,876 — 2,340 >580 - 680 — — 7 — — 59 49 — 115 Less than 580 — — — — — — 18 — 18 Total retail loans $ 20,229 $ 3,548 $ 2,030 $ 1,655 $ 6,969 $ 89,762 $ 26,542 $ — $ 150,735 Term Loans by FICO and Vintage (Dollars in thousands) 2020 2019 2018 2017 2016 Prior Revolving Revolving Converted to Term During the Period Total December 31, 2020 Retail loans Single family residential Greater than 740 $ 10,794 $ 6,531 $ 12,679 $ 8,846 $ 28,222 $ 81,838 $ 19,588 — $ 168,498 >680 - 740 — 1,183 1,303 4,732 2,614 15,624 6,685 — 32,141 >580 - 680 — — — 461 3,132 7,473 864 — 11,930 Less than 580 — — — — — 19,970 35 — 20,005 Consumer loans Greater than 740 52 69 31 22 1 2,609 2,198 — 4,982 >680 - 740 — 35 6 3 — 469 1,227 — 1,740 >580 - 680 — 15 — — 1 95 56 — 167 Less than 580 — — — — — 13 27 — 40 Total retail loans $ 10,846 $ 7,833 $ 14,019 $ 14,064 $ 33,970 $ 128,091 $ 30,680 $ — $ 239,503
Schedule of delinquencies in the company's loan portfolio	The following tables stratify loans held for investment by delinquencies in the Company’s loan portfolio at the dates indicated: Days Past Due (Dollars in thousands) Current 30-59 60-89 90+ Total September 30, 2021 Investor loans secured by real estate CRE non-owner-occupied $ 2,812,797 $ — $ — $ 10,268 $ 2,823,065 Multifamily 5,705,666 — — — 5,705,666 Construction and land 292,815 — — — 292,815 SBA secured by real estate 48,470 — 629 347 49,446 Total investor loans secured by real estate 8,859,748 — 629 10,615 8,870,992 Business loans secured by real estate CRE owner-occupied 2,237,186 — — 4,978 2,242,164 Franchise real estate secured 354,481 — — — 354,481 SBA secured by real estate 69,496 — — 441 69,937 Total business loans secured by real estate 2,661,163 — — 5,419 2,666,582 Commercial loans Commercial and industrial 1,886,386 654 14 1,816 1,888,870 Franchise non-real estate secured 392,950 — — — 392,950 SBA not secured by real estate 11,701 74 293 664 12,732 Total commercial loans 2,291,037 728 307 2,480 2,294,552 Retail loans Single family residential 144,309 — — — 144,309 Consumer loans 6,426 — — — 6,426 Total retail loans 150,735 — — — 150,735 Totals $ 13,962,683 $ 728 $ 936 $ 18,514 $ 13,982,861 Days Past Due (Dollars in thousands) Current 30-59 60-89 90+ Total Gross Loans December 31, 2020 Investor loans secured by real estate CRE non-owner-occupied $ 2,674,328 $ — $ — $ 757 $ 2,675,085 Multifamily 5,171,355 1 — — 5,171,356 Construction and land 321,993 — — — 321,993 SBA secured by real estate 56,074 — — 1,257 57,331 Total investor loans secured by real estate 8,223,750 1 — 2,014 8,225,765 Business loans secured by real estate CRE owner-occupied 2,108,746 — — 5,304 2,114,050 Franchise real estate secured 347,932 — — — 347,932 SBA secured by real estate 78,036 486 — 1,073 79,595 Total business loans secured by real estate 2,534,714 486 — 6,377 2,541,577 Commercial loans Commercial and industrial 1,765,451 428 57 2,898 1,768,834 Franchise non-real estate secured 444,797 — — — 444,797 SBA not secured by real estate 14,912 338 — 707 15,957 Total commercial loans 2,225,160 766 57 3,605 2,229,588 Retail loans Single family residential 232,559 15 — — 232,574 Consumer loans 6,928 1 — — 6,929 Total retail loans 239,487 16 — — 239,503 Totals $ 13,223,111 $ 1,269 $ 57 $ 11,996 $ 13,236,433
Summary of nonaccrual loans	The following tables provide a summary of nonaccrual loans as of the dates indicated: Nonaccrual Loans (1) (Dollars in thousands) Collateral Dependent Loans ACL Non-Collateral Dependent Loans ACL Total Nonaccrual Loans Nonaccrual Loans with No ACL September 30, 2021 Investor loans secured by real estate CRE non-owner-occupied $ 12,179 $ 571 $ — $ — $ 12,179 $ 4,563 SBA secured by real estate 976 — — — 976 976 Total investor loans secured by real estate 13,155 571 — — 13,155 5,539 Business loans secured by real estate CRE owner-occupied 4,978 — — — 4,978 4,978 SBA secured by real estate 604 — — — 604 604 Total business loans secured by real estate 5,582 — — — 5,582 5,582 Commercial loans Commercial and industrial 1,816 — 443 — 2,259 2,259 Franchise non-real estate secured 1,086 — 12,333 — 13,419 13,419 SBA non-real estate secured 664 — — — 664 664 Total commercial loans 3,566 — 12,776 — 16,342 16,342 Retail loans Single family residential 11 — — — 11 11 Total retail loans 11 — — — 11 11 Total nonaccrual loans $ 22,314 $ 571 $ 12,776 $ — $ 35,090 $ 27,474 ______________________________ (1) The ACL for nonaccrual loans is determined based on a discounted cash flow methodology unless the loan is considered collateral dependent; otherwise, the ACL for collateral dependent nonaccrual loans is determined based on the estimated fair value of the underlying collateral. Nonaccrual Loans (1) (Dollars in thousands) Collateral Dependent Loans ACL Non-Collateral Dependent Loans ACL Total Nonaccrual Loans Nonaccrual Loans with No ACL December 31, 2020 Investor loans secured by real estate CRE non-owner-occupied $ 2,792 $ — $ — $ — $ 2,792 $ 2,792 SBA secured by real estate 1,257 — — — 1,257 1,257 Total investor loans secured by real estate 4,049 — — — 4,049 4,049 Business loans secured by real estate CRE owner-occupied 6,083 — — — 6,083 6,083 SBA secured by real estate 1,143 — — — 1,143 1,143 Total business loans secured by real estate 7,226 — — — 7,226 7,226 Commercial loans Commercial and industrial 2,040 — 1,934 126 3,974 2,733 Franchise non-real estate secured — — 13,238 — 13,238 13,238 SBA non-real estate secured 707 — — — 707 707 Total commercial loans 2,747 — 15,172 126 17,919 16,678 Retail loans Single family residential 15 — — — 15 15 Total retail loans 15 — — — 15 15 Total nonaccrual loans $ 14,037 $ — $ 15,172 $ 126 $ 29,209 $ 27,968 ______________________________ (1) The ACL for nonaccrual loans is determined based on a discounted cash flow methodology unless the loan is considered collateral dependent; otherwise, the ACL for collateral dependent nonaccrual loans is determined based on the estimated fair value of the underlying collateral.
Schedule of collateral dependent loans by collateral type	The following tables summarize collateral dependent loans by collateral type as of the dates indicated: September 30, 2021 (Dollars in thousands) Office Properties Industrial Properties Retail Properties Land Properties Hotel Properties Residential Properties Business Assets Total Investor loan secured by real estate CRE non-owner-occupied $ — $ — $ 2,437 $ — $ 9,742 $ — $ — $ 12,179 SBA secured by real estate — — — — 976 — — 976 Total investor loans secured by real estate — — 2,437 — 10,718 — — 13,155 Business loans secured by real estate CRE owner-occupied — — — 4,978 — — — 4,978 SBA secured by real estate 163 441 — — — — — 604 Total business loans secured by real estate 163 441 — 4,978 — — — 5,582 Commercial loans Commercial and industrial — — — 246 — 240 1,330 1,816 Franchise non-real estate secured — — — — — — 1,086 1,086 SBA non-real estate secured — — — — — — 664 664 Total commercial loans — — — 246 — 240 3,080 3,566 Retail loans Single family residential — — — — — 11 — 11 Total retail loans — — — — — 11 — 11 Total collateral dependent loans $ 163 $ 441 $ 2,437 $ 5,224 $ 10,718 $ 251 $ 3,080 $ 22,314 December 31, 2020 (Dollars in thousands) Office Properties Industrial Properties Retail Properties Land Properties Hotel Properties Residential Properties Business Assets Total Investor loan secured by real estate CRE non-owner-occupied $ — $ — $ 2,594 $ — $ 198 $ — $ — $ 2,792 SBA secured by real estate — — — — 1,257 — — 1,257 Total investor loans secured by real estate — — 2,594 — 1,455 — — 4,049 Business loans secured by real estate CRE owner-occupied — 779 — 5,304 — — — 6,083 SBA secured by real estate 288 757 — — — 98 — 1,143 Total business loans secured by real estate 288 1,536 — 5,304 — 98 — 7,226 Commercial loans Commercial and industrial — — — — — — 2,040 2,040 SBA non-real estate secured — — — — — — 707 707 Total commercial loans — — — — — — 2,747 2,747 Retail loans Single family residential — — — — — 15 — 15 Total retail loans — — — — — 15 — 15 Total collateral dependent loans $ 288 $ 1,536 $ 2,594 $ 5,304 $ 1,455 $ 113 $ 2,747 $ 14,037

Allowance for Credit Losses (Ta

Allowance for Credit Losses (Tables)	9 Months Ended
	Sep. 30, 2021
Provision for Loan and Lease Losses [Abstract]
Summary of allocation of the allowance for loan losses	The following tables provides the allocation of the ACL for loans held for investment as well as the activity in the ACL attributed to various segments in the loan portfolio as of, and for the periods indicated: Three Months Ended September 30, 2021 (Dollars in thousands) Beginning ACL Balance Charge-offs Recoveries Provision for Credit Losses Ending Investor loans secured by real estate CRE non-owner occupied $ 47,112 $ — $ — $ (4,645) $ 42,467 Multifamily 59,059 — — (6,895) 52,164 Construction and land 9,548 — — (1,531) 8,017 SBA secured by real estate 4,681 (158) — (644) 3,879 Business loans secured by real estate CRE owner-occupied 35,747 — 14 (2,082) 33,679 Franchise real estate secured 11,436 — — (1,810) 9,626 SBA secured by real estate 6,317 — 50 (1,263) 5,104 Commercial loans Commercial and industrial 39,879 (84) 729 (2,929) 37,595 Franchise non-real estate secured 17,313 (2,398) 80 2,523 17,518 SBA non-real estate secured 730 — 15 (113) 632 Retail loans Single family residential 670 — 2 (143) 529 Consumer loans 282 — — (11) 271 Totals $ 232,774 $ (2,640) $ 890 $ (19,543) $ 211,481 Nine Months Ended September 30, 2021 (Dollars in thousands) Beginning ACL Balance Charge-offs Recoveries Provision for Credit Losses Ending Investor loans secured by real estate CRE non-owner occupied $ 49,176 $ (154) $ — $ (6,555) $ 42,467 Multifamily 62,534 — — (10,370) 52,164 Construction and land 12,435 — — (4,418) 8,017 SBA secured by real estate 5,159 (423) — (857) 3,879 Business loans secured by real estate CRE owner-occupied 50,517 — 44 (16,882) 33,679 Franchise real estate secured 11,451 — — (1,825) 9,626 SBA secured by real estate 6,567 (98) 130 (1,495) 5,104 Commercial loans Commercial and industrial 46,964 (4,653) 3,428 (8,144) 37,595 Franchise non-real estate secured 20,525 (2,554) 80 (533) 17,518 SBA non-real estate secured 995 — 19 (382) 632 Retail loans Single family residential 1,204 — 3 (678) 529 Consumer loans 491 — — (220) 271 Totals $ 268,018 $ (7,882) $ 3,704 $ (52,359) $ 211,481 Three Months Ended September 30, 2020 (Dollars in thousands) Beginning ACL Balance Charge-offs Recoveries Provision for Credit Losses Ending Investor loans secured by real estate CRE non-owner occupied $ 63,007 $ (443) $ — $ (8,459) $ 54,105 Multifamily 63,511 — — 3,825 67,336 Construction and land 18,804 (377) — (2,870) 15,557 SBA secured by real estate 2,010 (145) 34 3,428 5,327 Business loans secured by real estate CRE owner-occupied 48,213 (1,739) 21 2,171 48,666 Franchise real estate secured 13,060 — — (1,072) 11,988 SBA secured by real estate 4,368 — 76 1,716 6,160 Commercial loans Commercial and industrial 41,967 (2,437) 10 8,374 47,914 Franchise non-real estate secured 21,676 (207) 865 (2,185) 20,149 SBA non-real estate secured 600 (10) 8 353 951 Retail loans Single family residential 1,479 — 2 (238) 1,243 Consumer loans 3,576 (129) 1 (341) 3,107 Totals $ 282,271 $ (5,487) $ 1,017 $ 4,702 $ 282,503 Nine Months Ended September 30, 2020 (Dollars in thousands) Beginning ACL Balance (1) Adoption of ASC 326 Initial ACL Recorded for PCD Loans Charge-offs Recoveries Provision for Credit Losses Ending Investor loans secured by real estate CRE non-owner occupied $ 1,899 $ 8,423 $ 3,025 $ (830) $ — $ 41,588 $ 54,105 Multifamily 729 9,174 8,710 — — 48,723 67,336 Construction and land 4,484 (124) 2,051 (377) — 9,523 15,557 SBA secured by real estate 1,915 (1,401) — (699) 34 5,478 5,327 Business loans secured by real estate CRE owner-occupied 2,781 20,166 3,766 (1,739) 44 23,648 48,666 Franchise real estate secured 592 5,199 — — — 6,197 11,988 SBA secured by real estate 2,119 2,207 235 (315) 147 1,767 6,160 Commercial loans Commercial and industrial 13,857 87 2,325 (5,213) 37 36,821 47,914 Franchise non-real estate secured 5,816 9,214 — (1,434) 865 5,688 20,149 SBA non-real estate secured 445 218 924 (803) 13 154 951 Retail loans Single family residential 655 541 206 (62) 3 (100) 1,243 Consumer loans 406 1,982 — (137) 2 854 3,107 Totals $ 35,698 $ 55,686 $ 21,242 $ (11,609) $ 1,145 $ 180,341 $ 282,503 ______________________________ (1) Beginning ACL balance represents the ALLL accounted for under ASC 450 and ASC 310, which is reflective of probable incurred losses as of the balance sheet date.
Schedule of allowance for credit quality indicators	The following table stratifies the loans held for investment portfolio by the Company’s internal risk grading, and by year of origination, as of September 30, 2021: Term Loans by Vintage (Dollars in thousands) 2021 2020 2019 2018 2017 Prior Revolving Revolving Converted to Term During the Period Total September 30, 2021 Investor loans secured by real estate CRE non-owner-occupied Pass $ 565,605 $ 268,733 $ 424,397 $ 462,395 $ 219,672 $ 823,208 $ 9,599 $ — $ 2,773,609 Special mention — — 16,263 1,943 — — — — 18,206 Substandard — — 25,775 — — 4,950 525 — 31,250 Multifamily Pass 1,694,447 1,012,346 1,348,563 526,744 501,849 619,628 218 — 5,703,795 Substandard — — — 543 556 772 — — 1,871 Construction and land Pass 86,107 125,190 51,733 22,134 3,996 3,607 48 — 292,815 SBA secured by real estate Pass 130 499 7,373 9,113 12,665 9,722 — — 39,502 Special mention — — — 962 — 548 — — 1,510 Substandard — — 9 2,353 3,170 2,902 — — 8,434 Total investor loans secured by real estate 2,346,289 1,406,768 1,874,113 1,026,187 741,908 1,465,337 10,390 — 8,870,992 Business loans secured by real estate CRE owner-occupied Pass 635,469 302,683 317,035 221,806 207,923 531,119 3,211 300 2,219,546 Special mention — — 6,078 1,741 — — — — 7,819 Substandard — — — 6,109 2,972 5,718 — — 14,799 Franchise real estate secured Pass 97,884 43,332 59,772 44,306 66,901 42,286 — — 354,481 SBA secured by real estate Pass 3,789 2,368 7,533 10,498 11,230 25,181 1,361 — 61,960 Special mention — — — — — 212 — — 212 Substandard — — — 1,326 3,000 3,439 — — 7,765 Total loans secured by business real estate 737,142 348,383 390,418 285,786 292,026 607,955 4,572 300 2,666,582 Term Loans by Vintage (Dollars in thousands) 2021 2020 2019 2018 2017 Prior Revolving Revolving Converted to Term During the Period Total September 30, 2021 Commercial loans Commercial and industrial Pass 260,359 89,545 204,683 139,560 156,915 78,951 906,369 2,059 1,838,441 Special mention — — 189 — — — 14,629 — 14,818 Substandard 650 1,759 552 2,854 867 1,570 26,619 740 35,611 Franchise non-real estate secured Pass 118,333 24,954 96,784 65,300 27,683 37,157 — — 370,211 Substandard — — 2,236 4,421 14,903 1,179 — — 22,739 SBA non-real estate secured Pass 152 653 1,424 938 3,239 3,567 — — 9,973 Special mention — — 698 117 — — — — 815 Substandard — — 78 338 247 617 664 — 1,944 Total commercial loans 379,494 116,911 306,644 213,528 203,854 123,041 948,281 2,799 2,294,552 Retail loans Single family residential Pass 20,201 3,518 1,967 1,633 6,954 86,711 23,274 — 144,258 Substandard — — — — — 51 — — 51 Consumer loans Pass 28 30 57 22 15 2,964 3,268 — 6,384 Substandard — — 6 — — 36 — — 42 Total retail loans 20,229 3,548 2,030 1,655 6,969 89,762 26,542 — 150,735 Totals gross loans $ 3,483,154 $ 1,875,610 $ 2,573,205 $ 1,527,156 $ 1,244,757 $ 2,286,095 $ 989,785 $ 3,099 $ 13,982,861 The following table stratifies the loans held for investment portfolio by the Company’s internal risk grading, and by year of origination, as of December 31, 2020: Term Loans by Vintage (Dollars in thousands) 2020 2019 2018 2017 2016 Prior Revolving Revolving Converted to Term During the Period Total December 31, 2020 Investor loans secured by real estate CRE non-owner-occupied Pass $ 265,901 $ 541,994 $ 440,351 $ 287,580 $ 279,238 $ 791,477 $ 11,114 $ — $ 2,617,655 Special mention — — 6,669 437 2,516 29,738 — — 39,360 Substandard — 9,732 2,045 — 516 5,218 559 — 18,070 Multifamily Pass 1,027,644 1,677,716 899,123 665,939 354,859 531,287 420 — 5,156,988 Special mention — 1,758 2,630 — 8,649 — — — 13,037 Substandard — — — 559 772 — — — 1,331 Construction and land Pass 57,309 144,759 73,313 18,625 20,531 6,672 784 — 321,993 SBA secured by real estate Pass — 8,306 9,029 13,418 6,305 7,696 — — 44,754 Special mention 496 1,032 1,159 1,000 373 306 — — 4,366 Substandard — 1,220 2,959 1,091 400 2,541 — — 8,211 Total investor loans secured by real estate 1,351,350 2,386,517 1,437,278 988,649 674,159 1,374,935 12,877 — 8,225,765 Business loans secured by real estate CRE owner-occupied Pass 293,324 409,758 332,672 327,475 225,098 469,704 14,268 246 2,072,545 Special mention 2,190 15,917 3,802 — 4,153 201 — — 26,263 Substandard — — 3,636 4,214 1,169 5,973 250 — 15,242 Franchise real estate secured Pass 44,413 81,438 66,241 96,999 24,673 27,020 — — 340,784 Special mention 878 1,650 2,652 — — — — — 5,180 Substandard — — — — 1,968 — — — 1,968 SBA secured by real estate Pass 3,253 7,637 12,608 16,058 8,488 23,624 — — 71,668 Special mention — — 1,200 — 137 — — — 1,337 Substandard — — 184 1,987 1,376 3,043 — — 6,590 Total loans secured by business real estate 344,058 516,400 422,995 446,733 267,062 529,565 14,518 246 2,541,577 Term Loans by Vintage (Dollars in thousands) 2020 2019 2018 2017 2016 Prior Revolving Revolving Converted to Term During the Period Total December 31, 2020 Commercial loans Commercial and industrial Pass 127,082 260,368 159,001 210,163 51,800 82,291 801,752 9,315 1,701,772 Special mention 735 — 2,331 185 1,320 243 17,890 37 22,741 Substandard — 3,310 2,737 610 1,333 2,446 32,858 1,027 44,321 Franchise non-real estate secured Pass 27,607 164,025 94,494 46,174 40,829 27,745 1,361 502 402,737 Special mention — 7,267 2,037 230 480 2,321 — — 12,335 Substandard — 6,690 3,706 18,425 700 204 — — 29,725 SBA non-real estate secured Pass 407 2,257 1,558 2,674 610 4,449 — 259 12,214 Special mention — — — 1,574 — — — — 1,574 Substandard — 83 357 282 340 400 707 — 2,169 Total commercial loans 155,831 444,000 266,221 280,317 97,412 120,099 854,568 11,140 2,229,588 Retail loans Single family residential Pass 10,794 7,714 13,982 14,039 33,968 124,248 27,172 — 231,917 Substandard — — — — — 657 — — 657 Consumer loans Pass 52 112 37 25 2 3,145 3,508 — 6,881 Substandard — 7 — — — 41 — — 48 Total retail loans 10,846 7,833 14,019 14,064 33,970 128,091 30,680 — 239,503 Totals gross loans $ 1,862,085 $ 3,354,750 $ 2,140,513 $ 1,729,763 $ 1,072,603 $ 2,152,690 $ 912,643 $ 11,386 $ 13,236,433 The following tables present PD bands for commercial real estate and commercial loan segments of the loan portfolio as of the dates indicated. Commercial Real Estate and Commercial Term Loans by PD and Vintage (Dollars in thousands) 2021 2020 2019 2018 2017 Prior Revolving Revolving Converted to Term During the Period Total September 30, 2021 Investor loans secured by real estate CRE non-owner-occupied 0% - 5.00% $ 530,275 $ 239,267 $ 392,557 $ 421,922 $ 198,651 $ 722,951 $ 4,270 $ — $ 2,509,893 >5.00% - 10.00% 35,330 24,645 23,757 9,755 11,088 53,696 5,329 — 163,600 Greater than 10% — 4,821 50,121 32,661 9,933 51,511 525 — 149,572 Multifamily 0% - 5.00% 1,660,670 962,609 1,316,575 520,329 500,815 609,731 218 — 5,570,947 >5.00% - 10.00% 28,718 49,737 31,988 6,958 1,590 8,314 — — 127,305 Greater than 10% 5,059 — — — — 2,355 — — 7,414 Construction and Land 0% - 5.00% 56,187 82,557 2,329 991 3,996 3,607 48 — 149,715 >5.00% - 10.00% 21,654 11,027 1,700 — — — — — 34,381 Greater than 10% 8,266 31,606 47,704 21,143 — — — — 108,719 SBA secured by real estate 0% - 5.00% 130 499 7,373 12,428 15,206 12,834 — — 48,470 >5.00% - 10.00% — — — — — — — — — Greater than 10% — — 9 — 629 338 — — 976 Total investor loans secured by real estate 2,346,289 1,406,768 1,874,113 1,026,187 741,908 1,465,337 10,390 — 8,870,992 Business loans secured by real estate CRE owner-occupied 0% - 5.00% 635,469 302,683 315,267 215,974 201,190 499,308 3,211 300 2,173,402 >5.00% - 10.00% — — 7,846 7,573 6,733 31,811 — — 53,963 Greater than 10% — — — 6,109 2,972 5,718 — — 14,799 Franchise real estate secured 0% - 5.00% 95,937 43,332 55,621 39,053 61,591 37,696 — — 333,230 >5.00% - 10.00% 812 — 4,151 5,253 5,310 4,590 — — 20,116 Greater than 10% 1,135 — — — — — — — 1,135 SBA secured by real estate 0% - 5.00% 3,789 2,368 6,237 9,605 8,900 16,909 — — 47,808 >5.00% - 10.00% — — 1,296 893 2,318 8,273 — — 12,780 Greater than 10% — — — 1,326 3,012 3,650 1,361 — 9,349 Total business loans secured by real estate 737,142 348,383 390,418 285,786 292,026 607,955 4,572 300 2,666,582 Commercial Real Estate and Commercial Term Loans by PD and Vintage (Dollars in thousands) 2021 2020 2019 2018 2017 Prior Revolving Revolving Converted to Term During the Period Total September 30, 2021 Commercial loans Commercial and industrial 0% - 5.00% 253,639 87,252 196,671 118,678 128,879 69,707 764,279 2,055 1,621,160 >5.00% - 10.00% 6,720 2,293 8,012 20,835 27,760 8,438 140,001 4 214,063 Greater than 10% 650 1,759 741 2,901 1,143 2,376 43,337 740 53,647 Franchise non-real estate secured 0% - 5.00% 108,905 19,246 63,233 59,636 22,735 15,697 — — 289,452 >5.00% - 10.00% 9,159 5,708 33,550 5,594 3,483 18,536 — — 76,030 Greater than 10% 269 — 2,237 4,491 16,368 4,103 — — 27,468 SBA not secured by real estate 0% - 5.00% 152 653 1,215 633 1,008 2,421 — — 6,082 >5.00% - 10.00% — — 209 305 2,231 1,137 — — 3,882 Greater than 10% — — 776 455 247 626 664 — 2,768 Total commercial loans $ 379,494 $ 116,911 $ 306,644 $ 213,528 $ 203,854 $ 123,041 $ 948,281 $ 2,799 $ 2,294,552 Commercial Real Estate and Commercial Term Loans by PD and Vintage (Dollars in thousands) 2020 2019 2018 2017 2016 Prior Revolving Revolving Converted to Term During the Period Total December 31, 2020 Investor loans secured by real estate CRE non-owner-occupied 0% - 5.00% $ 261,885 $ 491,522 $ 431,791 $ 266,942 $ 254,527 $ 763,101 $ 11,114 $ — $ 2,480,882 >5.00% - 10.00% 4,016 34,360 5,794 10,558 16,961 33,734 — — 105,423 Greater than 10% — 25,844 11,480 10,517 10,782 29,598 559 — 88,780 Multifamily 0% - 5.00% 950,089 1,610,011 878,233 634,268 349,549 516,452 — — 4,938,602 >5.00% - 10.00% 38,892 59,500 12,181 19,751 10,917 13,606 — — 154,847 Greater than 10% 38,663 9,963 11,339 12,479 3,814 1,229 420 — 77,907 Construction and land 0% - 5.00% 55,785 40,860 4,604 11,238 — 6,412 784 — 119,683 >5.00% - 10.00% 1,123 41,046 9,197 3,601 — 260 — — 55,227 Greater than 10% 401 62,853 59,512 3,786 20,531 — — — 147,083 SBA secured by real estate 0% - 5.00% 496 10,400 12,558 14,497 7,078 10,032 — — 55,061 >5.00% - 10.00% — — — 1,012 — — — — 1,012 Greater than 10% — 158 589 — — 511 — — 1,258 Total investor loans secured by real estate 1,351,350 2,386,517 1,437,278 988,649 674,159 1,374,935 12,877 — 8,225,765 Commercial Real Estate and Commercial Term Loans by PD and Vintage (Dollars in thousands) 2020 2019 2018 2017 2016 Prior Revolving Revolving Converted to Term During the Period Total December 31, 2020 Business loans secured by real estate CRE owner-occupied 0% - 5.00% 286,745 367,269 274,512 295,809 202,282 422,614 10,393 246 1,859,870 >5.00% - 10.00% 8,769 42,310 60,222 28,421 23,875 44,855 3,875 — 212,327 Greater than 10% — 16,096 5,376 7,459 4,263 8,409 250 — 41,853 Franchise real estate secured 0% - 5.00% 37,262 79,926 65,619 96,672 19,046 22,927 — — 321,452 >5.00% - 10.00% 7,587 1,650 3,274 327 5,627 4,093 — — 22,558 Greater than 10% 442 1,512 — — 1,968 — — — 3,922 SBA secured by real estate 0% - 5.00% 3,253 7,637 11,840 15,069 5,707 18,742 — — 62,248 >5.00% - 10.00% — — 768 989 2,780 4,882 — — 9,419 Greater than 10% — — 1,384 1,987 1,514 3,043 — — 7,928 Total business loans secured by real estate 344,058 516,400 422,995 446,733 267,062 529,565 14,518 246 2,541,577 Commercial loans Commercial and industrial 0% - 5.00% 70,233 205,395 99,178 193,046 36,957 62,682 394,124 5,051 1,066,666 >5.00% - 10.00% 49,883 50,743 35,813 13,427 12,922 13,948 322,123 2,469 501,328 Greater than 10% 7,701 7,540 29,078 4,485 4,574 8,350 136,253 2,859 200,840 Franchise non-real estate secured 0% - 5.00% 21,409 145,392 88,171 38,010 21,956 23,479 — 502 338,919 >5.00% - 10.00% 6,198 15,754 5,454 8,164 18,415 3,626 — — 57,611 Greater than 10% — 16,836 6,612 18,655 1,638 3,165 1,361 — 48,267 SBA not secured by real estate 0% - 5.00% 407 2,257 910 1,078 441 2,782 — — 7,875 >5.00% - 10.00% — — 648 1,596 169 1,652 — 259 4,324 Greater than 10% — 83 357 1,856 340 415 707 — 3,758 Total commercial loans $ 155,831 $ 444,000 $ 266,221 $ 280,317 $ 97,412 $ 120,099 $ 854,568 $ 11,140 $ 2,229,588 Term Loans by LTV and Vintage (Dollars in thousands) 2021 2020 2019 2018 2017 Prior Revolving Revolving Converted to Term During the Period Total September 30, 2021 Investor loans secured by real estate CRE non-owner-occupied 55% and below $ 291,909 $ 142,444 $ 188,747 $ 208,825 $ 127,768 $ 589,484 $ 9,599 — $ 1,558,776 >55-65% 220,116 89,488 193,461 104,301 79,960 204,683 525 — 892,534 >65-75% 53,580 36,801 64,165 146,402 8,118 32,513 — — 341,579 Greater than 75% — — 20,062 4,810 3,826 1,478 — — 30,176 Multifamily 55% and below 260,469 219,510 314,269 211,795 207,913 299,265 218 — 1,513,439 >55-65% 719,640 421,994 580,084 229,609 158,927 226,977 — — 2,337,231 >65-75% 703,894 367,815 442,661 85,883 133,716 85,918 — — 1,819,887 Greater than 75% 10,444 3,027 11,549 — 1,849 8,240 — — 35,109 Construction and land 55% and below 82,458 120,912 42,774 4,183 3,996 3,607 48 — 257,978 >55-65% — 4,278 6,630 17,951 — — — — 28,859 >65-75% 3,649 — 2,329 — — — — — 5,978 Greater than 75% — — — — — — — — — SBA secured by real estate 55% and below — — 9 637 695 2,177 — — 3,518 >55-65% — — 2,407 1,958 1,910 2,853 — — 9,128 >65-75% 130 — 3,870 4,606 4,461 5,544 — — 18,611 Greater than 75% — 499 1,096 5,227 8,769 2,598 — — 18,189 Total investor loans secured by real estate 2,346,289 1,406,768 1,874,113 1,026,187 741,908 1,465,337 10,390 — 8,870,992 Business loan secured by real estate CRE owner-occupied 55% and below 296,313 108,338 123,527 100,865 139,455 383,599 3,211 300 1,155,608 >55-65% 161,368 73,789 66,407 70,311 46,314 99,171 — — 517,360 >65-75% 126,160 87,909 123,495 52,679 16,909 37,740 — — 444,892 Greater than 75% 51,628 32,647 9,684 5,801 8,217 16,327 — — 124,304 Franchise real estate secured 55% and below 17,039 23,695 9,052 12,776 14,889 19,988 — — 97,439 >55-65% 39,872 2,622 11,055 10,137 4,804 10,129 — — 78,619 >65-75% 23,262 15,150 36,521 8,632 15,563 10,951 — — 110,079 Greater than 75% 17,711 1,865 3,144 12,761 31,645 1,218 — — 68,344 SBA secured by real estate 55% and below 2,547 591 1,897 1,127 5,146 14,667 1,361 — 27,336 >55-65% 186 556 199 1,513 1,306 7,513 — — 11,273 >65-75% 703 328 3,111 5,254 4,104 3,586 — — 17,086 Greater than 75% 353 893 2,326 3,930 3,674 3,066 — — 14,242 Total business loans secured by real estate $ 737,142 $ 348,383 $ 390,418 $ 285,786 $ 292,026 $ 607,955 $ 4,572 $ 300 $ 2,666,582 Term Loans by LTV and Vintage (Dollars in thousands) 2020 2019 2018 2017 2016 Prior Revolving Revolving Converted to Term During the Period Total December 31, 2020 Investor loans secured by real estate CRE non-owner-occupied 55% and below $ 138,007 $ 229,272 $ 182,385 $ 136,355 $ 189,848 $ 588,230 $ 11,114 $ — $ 1,475,211 >55-65% 101,434 217,210 92,015 130,024 78,470 204,161 559 — 823,873 >65-75% 26,460 102,494 169,878 18,876 13,952 29,506 — — 361,166 Greater than 75% — 2,750 4,787 2,762 — 4,536 — — 14,835 Multifamily 55% and below 218,833 345,519 294,464 233,997 84,530 269,906 — — 1,447,249 >55-65% 381,737 731,408 381,282 215,170 152,066 189,151 420 — 2,051,234 >65-75% 427,074 583,078 215,389 215,452 127,684 66,457 — — 1,635,134 Greater than 75% — 19,469 10,618 1,879 — 5,773 — — 37,739 Construction and land 55% and below 57,309 105,308 36,068 18,625 20,531 6,672 784 — 245,297 >55-65% — 36,113 23,770 — — — — — 59,883 >65-75% — 3,338 13,475 — — — — — 16,813 Greater than 75% — — — — — — — — — SBA secured by real estate 55% and below — 2,066 649 673 317 778 — — 4,483 >55-65% — 2,427 1,639 4,008 879 4,354 — — 13,307 >65-75% — 3,897 3,882 3,482 4,519 1,884 — — 17,664 Greater than 75% 496 2,168 6,977 7,346 1,363 3,527 — — 21,877 Total investor loans secured by real estate 1,351,350 2,386,517 1,437,278 988,649 674,159 1,374,935 12,877 — 8,225,765 Business loan secured by real estate CRE owner-occupied 55% and below 96,803 160,605 157,868 179,791 131,795 328,188 14,518 246 1,069,814 >55-65% 72,044 91,028 98,176 94,712 65,120 90,548 — — 511,628 >65-75% 71,692 152,920 79,106 43,832 31,303 31,493 — — 410,346 Greater than 75% 54,975 21,122 4,960 13,354 2,202 25,649 — — 122,262 Franchise real estate secured 55% and below 20,801 10,470 13,864 20,956 9,189 16,213 — — 91,493 >55-65% 2,689 9,955 16,001 19,102 6,855 2,333 — — 56,935 >65-75% 19,349 51,719 23,258 9,153 10,597 7,236 — — 121,312 Greater than 75% 2,452 10,944 15,770 47,788 — 1,238 — — 78,192 SBA secured by real estate 55% and below 1,825 1,626 5,332 5,495 3,615 13,582 — — 31,475 >55-65% 246 513 1,795 1,094 3,586 5,448 — — 12,682 >65-75% 264 3,142 1,515 3,968 1,586 4,043 — — 14,518 Greater than 75% 918 2,356 5,350 7,488 1,214 3,594 — — 20,920 Total business loans secured by real estate $ 344,058 $ 516,400 $ 422,995 $ 446,733 $ 267,062 $ 529,565 $ 14,518 $ 246 $ 2,541,577 The following tables present the FICO bands, at origination, for the retail segment of the loan portfolio as of the dates indicated: Term Loans by FICO and Vintage (Dollars in thousands) 2021 2020 2019 2018 2017 Prior Revolving Revolving Converted to Term During the Period Total September 30, 2021 Retail loans Single family residential Greater than 740 $ 20,201 $ 3,518 $ 1,967 $ 1,599 $ 3,319 $ 53,609 $ 17,213 — $ 101,426 >680 - 740 — — — 34 3,172 9,756 5,271 — 18,233 >580 - 680 — — — — 453 9,301 757 — 10,511 Less than 580 — — — — 10 14,096 33 — 14,139 Consumer loans Greater than 740 27 30 37 22 12 2,500 1,325 — 3,953 >680 - 740 1 — 19 — 3 441 1,876 — 2,340 >580 - 680 — — 7 — — 59 49 — 115 Less than 580 — — — — — — 18 — 18 Total retail loans $ 20,229 $ 3,548 $ 2,030 $ 1,655 $ 6,969 $ 89,762 $ 26,542 $ — $ 150,735 Term Loans by FICO and Vintage (Dollars in thousands) 2020 2019 2018 2017 2016 Prior Revolving Revolving Converted to Term During the Period Total December 31, 2020 Retail loans Single family residential Greater than 740 $ 10,794 $ 6,531 $ 12,679 $ 8,846 $ 28,222 $ 81,838 $ 19,588 — $ 168,498 >680 - 740 — 1,183 1,303 4,732 2,614 15,624 6,685 — 32,141 >580 - 680 — — — 461 3,132 7,473 864 — 11,930 Less than 580 — — — — — 19,970 35 — 20,005 Consumer loans Greater than 740 52 69 31 22 1 2,609 2,198 — 4,982 >680 - 740 — 35 6 3 — 469 1,227 — 1,740 >580 - 680 — 15 — — 1 95 56 — 167 Less than 580 — — — — — 13 27 — 40 Total retail loans $ 10,846 $ 7,833 $ 14,019 $ 14,064 $ 33,970 $ 128,091 $ 30,680 $ — $ 239,503

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of goodwill	September 30, September 30, (Dollars in thousands) 2021 2020 Balance, beginning of year $ 898,569 $ 808,322 Goodwill acquired during the year — 92,844 Purchase accounting adjustments 2,743 (2,732) Balance, end of year $ 901,312 $ 898,434 Accumulated impairment losses at end of year $ — $ —
Schedule of finite-lived intangible assets	The following table summarizes the change in the balance of core deposit intangibles and customer relationship intangibles, and the related accumulated amortization for the periods indicated below: Three Months Ended Nine Months Ended September 30, June 30, September 30, September 30, September 30, (Dollars in thousands) 2021 2021 2020 2021 2020 Gross amount of intangible assets: Beginning balance $ 145,212 $ 145,212 $ 145,212 $ 145,212 $ 125,945 Additions due to acquisitions — — — — 19,267 Ending balance 145,212 145,212 145,212 145,212 145,212 Accumulated amortization: Beginning balance (67,849) (63,848) (50,662) (59,705) (42,633) Amortization (3,912) (4,001) (4,538) (12,056) (12,567) Ending balance (71,761) (67,849) (55,200) (71,761) (55,200) Net intangible assets $ 73,451 $ 77,363 $ 90,012 $ 73,451 $ 90,012

Subordinated Debentures (Tables

Subordinated Debentures (Tables)	9 Months Ended
	Sep. 30, 2021
Debt Disclosure [Abstract]
Schedule of outstanding subordinated debentures	The following table summarizes our outstanding subordinated debentures as of the dates indicated: September 30, 2021 December 31, 2020 (Dollars in thousands) Stated Maturity Current Interest Rate Current Principal Balance Carrying Value Subordinated notes Subordinated notes due 2024, 5.75% per annum September 3, 2024 5.75 % $ 60,000 $ 59,641 $ 59,552 Subordinated notes due 2029, 4.875% per annum until May 15, 2024, 3-month LIBOR +2.5% thereafter May 15, 2029 4.875 % 125,000 123,068 122,877 Subordinated notes due 2030, 5.375% per annum until June 15, 2025, 3-month SOFR +5.170% thereafter June 15, 2030 5.375 % 150,000 147,699 147,501 Subordinated notes due 2025, 7.125% per annum June 26, 2025 — % — — 25,109 Subordinated notes due 2026, 5.50% per annum until June 30 2021, 3-month LIBOR +4.285% thereafter July 1, 2026 — % — — 138,371 Total subordinated notes 335,000 330,408 493,410 Subordinated debt Heritage Oaks Capital Trust II (junior subordinated debt), 3-month LIBOR+1.72% January 1, 2037 — % — — 4,121 Santa Lucia Bancorp (CA) Capital Trust (junior subordinated debt), 3-month LIBOR+1.48% July 7, 2036 — % — — 3,980 Total subordinated debt — — 8,101 Total subordinated debentures $ 335,000 $ 330,408 $ 501,511

Earnings per Share (Tables)

Earnings per Share (Tables)	9 Months Ended
	Sep. 30, 2021
Earnings Per Share [Abstract]
Schedule of company's unaudited earnings per share calculations	The following tables set forth the Corporation’s earnings per share calculations for the periods indicated: Three Months Ended (Dollars in thousands, except per share data) September 30, 2021 June 30, 2021 September 30, 2020 Basic Net income $ 90,088 $ 96,302 $ 66,566 Less: dividends and undistributed earnings allocated to participating securities (937) (1,034) (612) Net income allocated to common stockholders $ 89,151 $ 95,268 $ 65,954 Weighted average common shares outstanding 93,549,639 93,635,392 93,529,967 Basic earnings per common share $ 0.95 $ 1.02 $ 0.71 Diluted Net income allocated to common stockholders $ 89,151 $ 95,268 $ 65,954 Weighted average common shares outstanding 93,549,639 93,635,392 93,529,967 Diluted effect of share-based compensation 511,085 582,636 189,200 Weighted average diluted common shares 94,060,724 94,218,028 93,719,167 Diluted earnings per common share $ 0.95 $ 1.01 $ 0.70 Nine Months Ended (Dollars in thousands, except per share data) September 30, 2021 September 30, 2020 Basic Net income (loss) $ 255,058 $ (6,785) Less: dividends and undistributed earnings allocated to participating securities (2,641) (564) Net income (loss) allocated to common stockholders $ 252,417 $ (7,349) Weighted average common shares outstanding 93,571,468 74,391,688 Basic earnings (loss) per common share $ 2.70 $ (0.10) Diluted Net income (loss) allocated to common stockholders $ 252,417 $ (7,349) Weighted average common shares outstanding 93,571,468 74,391,688 Diluted effect of share-based compensation 518,939 — Weighted average diluted common shares 94,090,407 74,391,688 Diluted earnings (loss) per common share $ 2.68 $ (0.10)

Fair Value of Financial Instr_2

Fair Value of Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2021
Fair Value Disclosures [Abstract]
Schedule of Company's financial instruments measured at fair value on a recurring basis	The following fair value hierarchy table presents information about the Company’s financial assets and liabilities measured at fair value on a recurring basis at the dates indicated: September 30, 2021 Fair Value Measurement Using (Dollars in thousands) Level 1 Level 2 Level 3 Total Fair Value Financial assets Investment securities available-for-sale: U.S. Treasury $ — $ 79,342 $ — $ 79,342 Agency — 530,093 — 530,093 Corporate — 386,391 — 386,391 Municipal bonds — 1,255,866 — 1,255,866 Collateralized mortgage obligations — 662,231 — 662,231 Mortgage-backed securities — 1,795,892 — 1,795,892 Total securities available-for-sale $ — $ 4,709,815 $ — $ 4,709,815 Derivative assets: Interest rate swaps $ — $ 6,747 $ — $ 6,747 Equity warrants — — 1,895 1,895 Total derivative assets $ — $ 6,747 $ 1,895 $ 8,642 Financial liabilities Derivative liabilities $ — $ 5,819 $ — $ 5,819 December 31, 2020 Fair Value Measurement Using (Dollars in thousands) Level 1 Level 2 Level 3 Total Financial assets Investment securities available-for-sale: U.S. Treasury $ — $ 32,533 $ — $ 32,533 Agency — 690,386 — 690,386 Corporate — 415,308 — 415,308 Municipal bonds — 1,446,019 — 1,446,019 Collateralized mortgage obligations — 513,366 — 513,366 Mortgage-backed securities — 833,503 — 833,503 Total securities available-for-sale $ — $ 3,931,115 $ — $ 3,931,115 Derivative assets: Interest rate swaps $ — $ 12,053 $ — $ 12,053 Equity warrants — — 1,914 1,914 Total derivative assets $ — $ 12,053 $ 1,914 $ 13,967 Financial liabilities Derivative liabilities $ — $ 12,066 $ — $ 12,066
Schedule of reconciliation of fair value of equity warrants	The following table is a reconciliation of the fair value of the equity warrants that are classified as Level 3 and measured on a recurring basis as of: Three Months Ended Nine Months Ended September 30, September 30, September 30, September 30, (Dollars in thousands) 2021 2020 2021 2020 Beginning balance $ 1,903 $ 1,952 $ 1,914 $ 5,162 Change in fair value (1) (8) (32) (19) (35) Sales — — — (3,207) Ending balance $ 1,895 $ 1,920 $ 1,895 $ 1,920 ______________________________ (1) The changes in fair value are included in other income on the consolidated statement of income.
Schedule of quantitative information for level 3 fair value measurements	The following table presents quantitative information about Level 3 fair value measurements for assets measured at fair value on a recurring basis at the dates indicated. September 30, 2021 Range (Dollars in thousands) Fair Value Valuation Technique(s) Unobservable Input(s) Min Max Weighted Average Equity warrants $ 1,895 Black-Scholes Volatility 30.00% 0.19% 5.50% 35.00% 0.76% 16.00% 31.15% 0.32% 13.59% December 31, 2020 Range (Dollars in thousands) Fair Value Valuation Technique(s) Unobservable Input(s) Min Max Weighted Average Equity warrants $ 1,914 Black-Scholes Volatility 30.00% 0.13% 6.00% 35.00% 0.36% 16.00% 31.19% 0.18% 13.51% The following table presents quantitative information about Level 3 fair value measurements for assets measured at fair value on a nonrecurring basis at the dates indicated. September 30, 2021 Range (Dollars in thousands) Fair Value Valuation Technique(s) Unobservable Input(s) Min Max Weighted Average Investor loans secured by real estate CRE non-owner-occupied $ 7,045 Fair value of collateral Collateral discount and cost to sell 7.00% 7.00% 7.00% SBA secured by real estate (1) 976 Fair value of collateral Collateral discount and cost to sell 10.00% 10.00% 10.00% Commercial loans Commercial and industrial 240 Fair value of collateral Collateral discount and cost to sell 20.00% 20.00% 20.00% Franchise non-real estate secured 1,087 Fair value of collateral Collateral discount and cost to sell —% 100.00% 10.32% Total individually evaluated loans $ 9,348 December 31, 2020 Range (Dollars in thousands) Fair Value Valuation Technique(s) Unobservable Input(s) Min Max Weighted Average Investor loans secured by real estate CRE non-owner-occupied $ 198 Fair value of collateral Collateral discount and cost to sell 10.00% 10.00% 10.00% SBA secured by real estate (1) 746 Fair value of collateral Collateral discount and cost to sell 10.00% 10.00% 10.00% Business loans secured by real estate SBA secured by real estate (2) 386 Fair value of collateral Collateral discount and cost to sell 7.00% 10.00% 9.09% Commercial loans Commercial and industrial 2,040 Fair value of collateral Collateral discount and cost to sell 7.00% 10.00% 9.06% SBA non-real estate secured 707 Fair value of collateral Collateral discount and cost to sell 7.00% 7.00% 7.00% Total individually evaluated loans $ 4,077 ______________________________ (1) SBA loans that are collateralized by hotel/motel real property. (2) SBA loans that are collateralized by real property other than hotel/motel real property.
Schedule of Company's financial instruments measured at fair value on a nonrecurring basis	The following table presents our assets measured at fair value on a nonrecurring basis at the dates indicated. September 30, 2021 (Dollars in thousands) Level 1 Level 2 Level 3 Total Financial assets Collateral dependent loans $ — $ — $ 9,348 $ 9,348 December 31, 2020 (Dollars in thousands) Level 1 Level 2 Level 3 Total Financial assets Collateral dependent loans $ — $ — $ 4,077 $ 4,077
Schedule of carrying amount and estimated fair value of financial instruments	The fair value estimates presented herein are based on pertinent information available to management as of the dates indicated, representing an exit price. At September 30, 2021 (Dollars in thousands) Carrying Level 1 Level 2 Level 3 Estimated Assets Cash and cash equivalents $ 322,320 $ 322,320 $ — $ — $ 322,320 Interest-bearing time deposits with financial institutions 2,708 2,708 — — 2,708 Investments held-to-maturity 170,576 — 169,154 — 169,154 Investment securities available-for-sale 4,709,815 — 4,709,815 — 4,709,815 Loans held for sale 8,100 — 8,899 — 8,899 Loans held for investment, net 13,982,861 — — 14,121,193 14,121,193 Derivative assets 8,642 — 6,747 1,895 8,642 Accrued interest receivable 63,228 63,228 — — 63,228 Liabilities Deposit accounts $ 17,469,999 $ 16,356,929 $ 1,167,405 $ — $ 17,524,334 FHLB advances 150,000 — 150,000 — 150,000 Subordinated debentures 330,408 — 367,515 — 367,515 Derivative liabilities 5,819 — 5,819 — 5,819 Accrued interest payable 5,065 5,065 — — 5,065 At December 31, 2020 (Dollars in thousands) Carrying Level 1 Level 2 Level 3 Estimated Assets Cash and cash equivalents $ 880,766 $ 880,766 $ — $ — $ 880,766 Interest-bearing time deposits with financial institutions 2,845 2,845 — — 2,845 Investments held-to-maturity 23,732 — 25,013 — 25,013 Investment securities available-for-sale 3,931,115 — 3,931,115 — 3,931,115 Loans held for sale 601 — 645 — 645 Loans held for investment, net 13,236,433 — — 13,351,092 13,351,092 Derivative assets 13,967 — 12,053 1,914 13,967 Accrued interest receivable 74,574 74,574 — — 74,574 Liabilities Deposit accounts $ 16,214,177 $ 14,587,335 $ 1,631,047 $ — $ 16,218,382 FHLB advances 31,000 — 31,564 — 31,564 Subordinated debentures 501,511 — 544,436 — 544,436 Derivative liabilities 12,066 — 12,066 — 12,066 Accrued interest payable 6,569 6,569 — — 6,569

Derivative Instruments (Tables)

Derivative Instruments (Tables)	9 Months Ended
	Sep. 30, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of derivative instruments in statement of financial condition and statements of income related to cumulative basis adjustment for fair value hedges	The following amounts were recorded on the consolidated statement of financial condition related to cumulative basis adjustment for fair value hedges as of the dates indicated: Line Item in the Statement of Financial Position in Which the Hedged Item is Included Carrying Amount of the Hedged Assets Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Assets (Dollars in thousands) September 30, 2021 December 31, 2020 September 30, 2021 December 31, 2020 Loans held for investment (1) $ 298,973 $ — $ (1,027) $ — Total $ 298,973 $ — $ (1,027) $ — ______________________________ (1) These amounts include the amortized cost basis of closed portfolios used to designate hedging relationships in which the hedged item is the last layer expected to be remaining at the end of the hedging relationship. At September 30, 2021, the amortized cost basis of the closed portfolios used in these hedging relationships was $815.2 million; the cumulative basis adjustments associated with these hedging relationships was $1.0 million; and the amounts of the designated hedged items were $300.0 million. The following table presents the effect of fair value hedge accounting on the consolidated statements of income: Three Months Ended (Dollars in thousands) Location of Gain (Loss) Recognized in Income on Derivative Instruments September 30, 2021 Gain (loss) on fair value hedging relationships: Hedged items Interest Income $ (1,027) Derivatives designated as hedging instruments Interest Income 932
Schedule of derivative instruments	The following tables summarize the Company's derivative instruments included in other assets and other liabilities in the consolidated statements of financial condition: September 30, 2021 Derivative Assets Derivative Liabilities (Dollars in thousands) Notional Fair Value Notional Fair Value Derivative instruments designated as hedging instruments: Fair value hedge - interest rate swap contracts $ 300,000 $ 932 $ — $ — Total derivative designated as hedging instruments 300,000 932 — — Derivative instruments not designated as hedging instruments: Interest rate swaps contracts 135,580 5,815 135,580 5,819 Equity warrants — 1,895 — — Total derivative not designated as hedging instruments $ 135,580 $ 7,710 $ 135,580 $ 5,819 Total derivatives 435,580 8,642 135,580 5,819 December 31, 2020 Derivative Assets Derivative Liabilities (Dollars in thousands) Notional Fair Value Notional Fair Value Derivative instruments not designated as hedging instruments: Interest rate swaps contracts $ 145,181 $ 12,053 $ 145,181 $ 12,066 Equity warrants — 1,914 — — Total derivative instruments $ 145,181 $ 13,967 $ 145,181 $ 12,066 The following table summarizes the effect of the derivatives not designated as hedging instruments in the consolidated statements of income. (Dollars in thousands) Three Months Ended September 30, Nine Months Ended September 30, Derivatives Not Designated as Hedging Instruments: Location of Gain (Loss) Recognized in Income on Derivative Instruments 2021 2020 2021 2020 Interest rate products Other income $ 1 $ — $ 9 $ — Other contracts Other income — 218 — 415 Equity warrants Other income (8) (31) (19) (35) Total $ (7) $ 187 $ (10) $ 380

Balance Sheet Offsetting (Table

Balance Sheet Offsetting (Tables)	9 Months Ended
	Sep. 30, 2021
Offsetting [Abstract]
Schedule of financial instruments eligible for offset in consolidated statements of financial condition	Financial instruments that are eligible for offset in the consolidated statements of financial condition as of the periods indicated are presented below: Gross Amounts Not Offset in the Consolidated (Dollars in thousands) Gross Amounts Recognized Gross Amounts Offset in the Consolidated Statements of Financial Condition Net Amounts Presented in the Consolidated Statements of Financial Condition Financial Instruments (1) Cash Collateral (2) Net Amount September 30, 2021 Derivative assets: Interest rate swaps $ 6,747 $ — $ 6,747 $ — $ — $ 6,747 Total $ 6,747 $ — $ 6,747 $ — $ — $ 6,747 Derivative liabilities: Interest rate swaps $ 5,819 $ — $ 5,819 $ (4,593) $ (1,226) $ — Total $ 5,819 $ — $ 5,819 $ (4,593) $ (1,226) $ — December 31, 2020 Derivative assets: Interest rate swaps $ 12,053 $ — $ 12,053 $ — $ — $ 12,053 Total $ 12,053 $ — $ 12,053 $ — $ — $ 12,053 Derivative liabilities: Interest rate swaps $ 12,066 $ — $ 12,066 $ (6,140) $ (5,926) $ — Total $ 12,066 $ — $ 12,066 $ (6,140) $ (5,926) $ — (1) Represents the fair value of securities pledged with counterparty bank. (2) Represents cash collateral pledged with counterparty bank.

Leases (Tables)

Leases (Tables)	9 Months Ended
	Sep. 30, 2021
Leases [Abstract]
Components of lease expense	The Company’s lease expense is recorded in premises and occupancy expense in the consolidated statements of income (loss). The following table presents the components of lease expense for the periods indicated: Three Months Ended Nine Months Ended (Dollars in thousands) September 30, 2021 June 30, 2021 September 30, 2020 September 30, 2021 September 30, 2020 Operating lease $ 4,826 $ 4,887 5,618 $ 14,725 $ 12,690 Short-term lease 433 323 495 1,263 1,425 Total lease expense $ 5,259 $ 5,210 $ 6,113 $ 15,988 $ 14,115
Schedule of supplemental information	The following table presents supplemental information related to operating leases as of and for nine months ended: (Dollars in thousands) September 30, 2021 December 31, 2020 Balance Sheet: Operating lease right of use assets $ 67,586 $ 76,090 Operating lease liabilities 76,592 85,556 Nine Months Ended (Dollars in thousands) September 30, 2021 September 30, 2020 Cash Flows: Operating cash outflow from operating leases $ 15,512 $ 10,946
Schedule of minimum contractual lease payments and other information	The following table provides information related to minimum contractual lease payments and other information associated with the Company’s leases as of the dates indicated: (Dollars in thousands) 2021 2022 2023 2024 2025 Thereafter Total As of September 30, 2021 Operating leases $ 5,103 $ 20,058 $ 19,463 $ 17,454 $ 12,171 $ 15,855 $ 90,104 Short-term leases 130 24 — — — — 154 Total contractual base rents (1) $ 5,233 $ 20,082 $ 19,463 $ 17,454 $ 12,171 $ 15,855 $ 90,258 Total liability to make lease payments $ 76,592 Difference in undiscounted and discounted future lease payments $ 13,666 Weighted average discount rate 5.23 % Weighted average remaining lease term (years) 5.1 ______________________________ (1) Contractual base rents reflect options to extend and renewals, and do not include property taxes and other operating expenses due under respective lease agreements.

Revenue Recognition (Tables)

Revenue Recognition (Tables)	9 Months Ended
	Sep. 30, 2021
Revenue from Contract with Customer [Abstract]
Summary of Company's revenue streams	The following tables provide a summary of the Company’s noninterest income, segregated by revenue streams within and outside the scope of ASC 606 for the periods indicated: Three Months Ended September 30, 2021 June 30, 2021 September 30, 2020 (Dollars in thousands) Within Scope (1) Out of Scope (2) Within Scope (1) Out of Scope (2) Within Scope (1) Out of Scope (2) Noninterest income Loan servicing income $ — $ 536 $ — $ 622 $ — $ 481 Service charges on deposit accounts 2,375 — 2,222 — 1,593 — Other service fee income 350 — 352 — 487 — Debit card interchange income 834 — 1,099 — 944 — Earnings on bank-owned life insurance — 3,266 — 2,279 — 2,270 Net gain (loss) from sales of loans — 1,187 — 1,546 — 9,542 Net gain (loss) from sales of investment securities — 4,190 — 5,085 — 1,141 Trust custodial account fees 11,446 — 7,897 — 6,960 — Escrow and exchange fees 1,867 — 1,672 — 1,142 — Other income (14) 4,063 97 3,858 91 2,107 Total noninterest income $ 16,858 $ 13,242 $ 13,339 $ 13,390 $ 11,217 $ 15,541 ___________________________________ (1) Revenues from contracts with customers accounted for under ASC 606. (2) Revenues not within the scope of ASC 606 and accounted for under other applicable GAAP requirements. Nine Months Ended September 30, 2021 September 30, 2020 (Dollars in thousands) Within Scope (1) Out of Scope (2) Within Scope (1) Out of Scope (2) Noninterest income Loan servicing income $ — $ 1,616 $ — $ 1,395 Service charges on deposit accounts 6,629 — 4,707 — Other service fee income 1,175 — 1,095 — Debit card interchange income 2,720 — 1,749 — Earnings on bank-owned life insurance — 7,778 — 4,920 Net gain (loss) from sales of loans — 3,094 — 8,281 Net gain from sales of investment securities — 13,321 — 8,880 Trust custodial account fees 26,565 — 9,357 — Escrow and exchange fees 5,065 — 1,407 — Other income 365 12,241 227 6,113 Total noninterest income $ 42,519 $ 38,050 $ 18,542 $ 29,589 ______________________________ (1) Revenues from contracts with customers accounted for under ASC 606. (2) Revenues not within the scope of ASC 606 and accounted for under other applicable GAAP requirements.

Variable Interest Entities (Tab

Variable Interest Entities (Tables)	9 Months Ended
	Sep. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Summary of variable interest entities	The following table provides a summary of the carrying amount of assets and liabilities in the Company’s consolidated statements of financial condition and maximum loss exposures as of September 30, 2021 and December 31, 2020 that relate to variable interests in non-consolidated VIEs. September 30, 2021 December 31, 2020 (Dollars in thousands) Maximum Loss Assets Liabilities Maximum Loss Assets Liabilities Multifamily loan securitization: Investment securities (1) $ 90,575 $ 90,575 $ — $ 100,927 $ 100,927 $ — Reimbursement obligation (2) 50,901 — 448 50,901 — 448 Affordable housing partnership: Other investments (3) 70,606 90,010 — 71,681 89,759 — Unfunded equity commitments (2) — — 19,404 — — 18,078 Total $ 212,082 $ 180,585 $ 19,852 $ 223,509 $ 190,686 $ 18,526 ______________________________ (1) Included in investment securities available-for-sale on the consolidated statement of financial condition. (2) Included in accrued expenses and other liabilities on the consolidated statement of financial condition.

Basis of Presentation (Details)

Basis of Presentation (Details) - USD ($) $ in Thousands	Jun. 01, 2020	May 29, 2020
Opus Bank
Business Acquisition [Line Items]
Business combination, consideration transferred	$ 749,605	$ 749,605

Significant Accounting Polici_3

Significant Accounting Policies (Details) - USD ($) $ in Thousands	Jun. 01, 2020	Sep. 30, 2021	Sep. 30, 2020
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Initial ACL Recorded for PCD Loans			$ 21,242
Opus Bank
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Fair value of PCD loans	$ 841,200
Initial ACL Recorded for PCD Loans	$ 21,200
Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Weighted average useful life		6 years
Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Weighted average useful life		11 years

Acquisitions - Narrative (Detai

Acquisitions - Narrative (Details) $ / shares in Units, client_account in Thousands, $ in Thousands	Jun. 01, 2020USD ($)office$ / sharesshares	May 29, 2020USD ($)$ / shares	Sep. 30, 2021USD ($)	Jun. 30, 2021USD ($)	Sep. 30, 2020USD ($)	Jun. 30, 2021USD ($)	Sep. 30, 2021USD ($)	Sep. 30, 2020USD ($)	Sep. 30, 2021USD ($)	Dec. 31, 2020USD ($)	May 31, 2020USD ($)client_account	Dec. 31, 2019USD ($)
Business Acquisition [Line Items]
Total assets			$ 21,005,211				$ 21,005,211		$ 21,005,211	$ 19,736,544
Total gross loans			13,982,861				13,982,861		13,982,861	13,236,433
Total deposits			17,469,999				17,469,999		17,469,999	16,214,177
Goodwill			901,312		$ 898,434		901,312	$ 898,434	901,312	$ 898,569		$ 808,322
Purchase accounting adjustments to goodwill							2,743	(2,732)
ACL expense (reversal)			(19,543)		4,702		(52,359)	180,341
Initial ACL Recorded for PCD Loans								21,242
Merger-related expense			$ 0	$ 0	2,988		5	44,058
PENSCO
Business Acquisition [Line Items]
Custodial assets											$ 14,480,000
Number of client accounts | client_account											44
Opus Bank
Business Acquisition [Line Items]
Equity issued, ratio	0.900
Stock transaction value (in dollars per share) | $ / shares	$ 19.31
Closing price of Corporation's common stock (in dollars per share) | $ / shares		$ 21.62
Business combination, consideration transferred	$ 749,605	$ 749,605
Intangible assets	19,267
Goodwill	92,990
Purchase accounting adjustments to goodwill					$ (2,700)	$ 2,700			$ 146
Fair value of non-PCD loans	4,940,000
Fair value of PCD loans	841,200
Contractual balance of non-PCD loans	5,050,000
Contractual balance of PCD loans	896,500
ACL expense (reversal)	75,900							75,900
Initial ACL Recorded for PCD Loans	21,200
Merger-related expense							$ 5	$ 44,100
Opus Bank | Core Deposits
Business Acquisition [Line Items]
Intangible assets	16,100
Opus Bank | Customer Relationships
Business Acquisition [Line Items]
Intangible assets	$ 3,200
Opus Bank | Common Stock
Business Acquisition [Line Items]
Common stock issued as consideration (in shares) | shares	34,407,403
Common stock issued for tax withholding (in shares) | shares	165,136
Value of equity interests issued and issuable		747,458
Opus Bank | Equity warrants
Business Acquisition [Line Items]
Common stock issued as consideration (in shares) | shares	406,778
Value of equity interests issued and issuable	$ 1,800
Opus Bank | Equity Option
Business Acquisition [Line Items]
Common stock issued as consideration (in shares) | shares	9,538
Value of equity interests issued and issuable	$ 46
Opus Bank | Restricted Stock Awards
Business Acquisition [Line Items]
Value of equity interests issued and issuable	328	$ 328
Opus Bank | Opus Bank
Business Acquisition [Line Items]
Total assets	8,320,000
Total gross loans	5,940,000
Total deposits	$ 6,910,000
Number of banking offices | office	46

Acquisitions - Total Transactio

Acquisitions - Total Transaction Consideration Value (Details) - Opus Bank - USD ($) $ in Thousands	Jun. 01, 2020	May 29, 2020
Business Acquisition [Line Items]
Cash paid in lieu of fractional shares		$ 2
Total merger consideration	$ 749,605	749,605
Common Stock
Business Acquisition [Line Items]
Value of equity interests issued and issuable		747,458
Restricted Stock Awards
Business Acquisition [Line Items]
Value of equity interests issued and issuable	$ 328	328
Options and Warrants
Business Acquisition [Line Items]
Value of equity interests issued and issuable		$ 1,817

Acquisitions - Assets Acquired

Acquisitions - Assets Acquired and Liabilities Assumed - (Details) - USD ($) $ in Thousands	Jun. 01, 2020	May 29, 2020	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Dec. 31, 2019
Liabilities assumed
Goodwill recognized			$ 901,312	$ 898,569	$ 898,434	$ 808,322
Opus Bank
Assets acquired
Cash and cash equivalents	$ 937,102
Interest bearing time deposits with financial institutions	137
Investment securities	829,891
Loans	5,809,451
Allowance for credit losses	(21,242)
Premises and equipment	22,121
Intangible assets	19,267
Deferred tax assets	43,395
Other assets	369,169
Total assets acquired	8,009,291
Liabilities assumed
Deposits	6,915,990
FHLB advances and other borrowings	213,491
Subordinated debt	138,653
Other liabilities	84,542
Total liabilities assumed	7,352,676
Total fair value of net identifiable assets	656,615
Business combination, consideration transferred	749,605	$ 749,605
Goodwill recognized	$ 92,990

Acquisitions - Pro Forma Financ

Acquisitions - Pro Forma Financial Information (Details) - Opus Bank - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2020
Business Acquisition [Line Items]
Net interest and other income	$ 193,304	$ 577,799
Net income (loss)	$ 66,566	$ (78,570)
Basic earnings (loss) per share (in dollars per share)	$ 0.71	$ (0.84)
Diluted earnings (loss) per share (in dollars per share)	$ 0.70	$ (0.84)

Investment Securities - Amortiz

Investment Securities - Amortized Cost and Estimated Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Jul. 01, 2021	Dec. 31, 2020
Investment securities available-for-sale:
Amortized  Cost	$ 4,705,112		$ 3,846,733
Gross Unrealized Gain	47,186		90,004
Gross Unrealized Loss	(42,483)		(5,622)
Estimated Fair Value	4,709,815		3,931,115
Investment securities held-to-maturity:
Amortized  Cost	170,587		23,732
Allowance for Credit Losses	(11)		0
Net Carrying Amount	170,576		23,732
Gross Unrecognized Gain	803		1,281
Gross Unrecognized Loss	(2,225)		0
Estimated Fair Value	169,154		25,013
U.S. Treasury
Investment securities available-for-sale:
Amortized  Cost	77,803		30,153
Gross Unrealized Gain	1,665		2,380
Gross Unrealized Loss	(126)		0
Estimated Fair Value	79,342		32,533
Agency
Investment securities available-for-sale:
Amortized  Cost	531,867		666,702
Gross Unrealized Gain	5,252		24,292
Gross Unrealized Loss	(7,026)		(608)
Estimated Fair Value	530,093		690,386
Corporate
Investment securities available-for-sale:
Amortized  Cost	383,910		412,223
Gross Unrealized Gain	5,381		3,591
Gross Unrealized Loss	(2,900)		(506)
Estimated Fair Value	386,391		415,308
Municipal bonds
Investment securities available-for-sale:
Amortized  Cost	1,237,923		1,412,012
Gross Unrealized Gain	27,585		37,260
Gross Unrealized Loss	(9,642)		(3,253)
Estimated Fair Value	1,255,866		1,446,019
Investment securities held-to-maturity:
Amortized  Cost	154,399
Allowance for Credit Losses	(11)
Net Carrying Amount	154,388
Gross Unrecognized Gain	0
Gross Unrecognized Loss	(2,225)	$ (3,200)
Estimated Fair Value	152,163
Collateralized mortgage obligations
Investment securities available-for-sale:
Amortized  Cost	665,851		513,259
Gross Unrealized Gain	1,109		819
Gross Unrealized Loss	(4,729)		(712)
Estimated Fair Value	662,231		513,366
Mortgage-backed securities
Investment securities available-for-sale:
Amortized  Cost	1,807,758		812,384
Gross Unrealized Gain	6,194		21,662
Gross Unrealized Loss	(18,060)		(543)
Estimated Fair Value	1,795,892		833,503
Investment securities held-to-maturity:
Amortized  Cost	14,656		22,124
Allowance for Credit Losses	0		0
Net Carrying Amount	14,656		22,124
Gross Unrecognized Gain	803		1,281
Gross Unrecognized Loss	0		0
Estimated Fair Value	15,459		23,405
Other
Investment securities held-to-maturity:
Amortized  Cost	1,532		1,608
Allowance for Credit Losses	0		0
Net Carrying Amount	1,532		1,608
Gross Unrecognized Gain	0		0
Gross Unrecognized Loss	0		0
Estimated Fair Value	$ 1,532		$ 1,608

Investment Securities - Narrati

Investment Securities - Narrative (Details)	3 Months Ended				9 Months Ended
	Sep. 30, 2021USD ($)investment_security	Jun. 30, 2021USD ($)	Sep. 30, 2020USD ($)	Jun. 30, 2020USD ($)	Sep. 30, 2021USD ($)investment_security	Sep. 30, 2020USD ($)	Jul. 01, 2021USD ($)	Dec. 31, 2020USD ($)investment_security
Investment Securities
Net carrying amount of securities transferred from available-for-sale to held-to-maturity					$ 154,456,000	$ 0
Unrealized loss on securities transferred from available-for-sale to held-to-maturity	$ 2,225,000				2,225,000			$ 0
Investment securities pledged	131,800,000				131,800,000			147,300,000
Accumulated other comprehensive income (loss), net of tax	1,176,000				1,176,000			60,292,000
Available-for-sale securities acquired					2,079,198,000	2,057,690,000
Net Carrying Amount	11,000				11,000			0
Held-to-maturity securities, provision for credit losses	11,000	$ 0	$ 0		11,000	0
Available-for-sale securities, provision for credit losses	0	0	0		0	0
Allowance for credit losses on debt securities, Available-for-sale	$ 0				$ 0			$ 0
Available-for-sale and held-to-maturity securities in nonaccrual status | investment_security	0				0			0
Available-for-sale and held-to-maturity securities purchased with deterioration in credit quality | investment_security	0				0			0
Available-for-sale and held-to-maturity collateral dependent | investment_security	0				0			0
Gross gains	$ 4,200,000	10,000,000	1,200,000		$ 18,500,000	10,400,000
Gross losses	0	5,000,000	12,000		5,100,000	1,500,000
Proceeds from available-for-sale securities	165,800,000	285,300,000	212,500,000		630,400,000	$ 558,900,000
FHLB stock	17,300,000				17,300,000
FRB stock	74,500,000				74,500,000
Other stock	26,700,000				26,700,000
Amount of stock repurchased by FHLB	0	$ 0	$ 0
Impairment loss on investments in FHLB, FRB and other stock					0
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent
Investment Securities
Accumulated other comprehensive income (loss) before tax amount	4,700,000				4,700,000			$ 84,400,000
Accumulated other comprehensive income (loss), net of tax	3,400,000				3,400,000			60,300,000
Opus Bank
Investment Securities
Available-for-sale securities acquired				$ 829,900,000
Allowance for credit losses of available-for-sale securities classified as purchase credit deteriorated				0
Opus Bank | Financial Asset Acquired with Credit Deterioration
Investment Securities
Available-for-sale securities acquired				$ 0
Mortgage-backed securities
Investment Securities
Unrealized loss on securities transferred from available-for-sale to held-to-maturity	0				0			$ 0
Municipal bonds
Investment Securities
Securities transferred from available-for-sale to held-to-maturity	157,600,000
Net carrying amount of securities transferred from available-for-sale to held-to-maturity	154,500,000
Unrealized loss on securities transferred from available-for-sale to held-to-maturity	2,225,000				2,225,000		$ 3,200,000
Accumulated other comprehensive income (loss) before tax amount	(3,100,000)				(3,100,000)
Accumulated other comprehensive income (loss), net of tax	$ (2,200,000)				$ (2,200,000)

Investment Securities - Investm

Investment Securities - Investment Category and Length of Time (Details) $ in Thousands	Sep. 30, 2021USD ($)investment_security	Dec. 31, 2020USD ($)investment_security
Less than 12 Months
Number | investment_security	285	106
Fair Value	$ 2,984,162	$ 812,988
Gross Unrealized Losses	$ (38,767)	$ (5,319)
12 Months or Longer
Number | investment_security	21	10
Fair Value	$ 148,415	$ 10,865
Gross Unrealized Losses	$ (3,716)	$ (303)
Total
Number | investment_security	306	116
Fair Value	$ 3,132,577	$ 823,853
Gross Unrealized Losses	$ (42,483)	$ (5,622)
U.S. Treasury
Less than 12 Months
Number | investment_security	2
Fair Value	$ 32,626
Gross Unrealized Losses	$ (126)
12 Months or Longer
Number | investment_security	0
Fair Value	$ 0
Gross Unrealized Losses	$ 0
Total
Number | investment_security	2
Fair Value	$ 32,626
Gross Unrealized Losses	$ (126)
Agency
Less than 12 Months
Number | investment_security	24	4
Fair Value	$ 339,270	$ 74,194
Gross Unrealized Losses	$ (5,365)	$ (307)
12 Months or Longer
Number | investment_security	12	9
Fair Value	$ 64,991	$ 10,434
Gross Unrealized Losses	$ (1,661)	$ (301)
Total
Number | investment_security	36	13
Fair Value	$ 404,261	$ 84,628
Gross Unrealized Losses	$ (7,026)	$ (608)
Corporate
Less than 12 Months
Number | investment_security	8	9
Fair Value	$ 88,666	$ 71,226
Gross Unrealized Losses	$ (1,916)	$ (506)
12 Months or Longer
Number | investment_security	1	0
Fair Value	$ 20,346	$ 0
Gross Unrealized Losses	$ (984)	$ 0
Total
Number | investment_security	9	9
Fair Value	$ 109,012	$ 71,226
Gross Unrealized Losses	$ (2,900)	$ (506)
Municipal bonds
Less than 12 Months
Number | investment_security	108	56
Fair Value	$ 651,169	$ 312,894
Gross Unrealized Losses	$ (9,102)	$ (3,253)
12 Months or Longer
Number | investment_security	2	0
Fair Value	$ 11,068	$ 0
Gross Unrealized Losses	$ (540)	$ 0
Total
Number | investment_security	110	56
Fair Value	$ 662,237	$ 312,894
Gross Unrealized Losses	$ (9,642)	$ (3,253)
Collateralized mortgage obligations
Less than 12 Months
Number | investment_security	30	21
Fair Value	$ 302,104	$ 215,603
Gross Unrealized Losses	$ (4,297)	$ (710)
12 Months or Longer
Number | investment_security	5	1
Fair Value	$ 44,615	$ 431
Gross Unrealized Losses	$ (432)	$ (2)
Total
Number | investment_security	35	22
Fair Value	$ 346,719	$ 216,034
Gross Unrealized Losses	$ (4,729)	$ (712)
Mortgage-backed securities
Less than 12 Months
Number | investment_security	113	16
Fair Value	$ 1,570,327	$ 139,071
Gross Unrealized Losses	$ (17,961)	$ (543)
12 Months or Longer
Number | investment_security	1	0
Fair Value	$ 7,395	$ 0
Gross Unrealized Losses	$ (99)	$ 0
Total
Number | investment_security	114	16
Fair Value	$ 1,577,722	$ 139,071
Gross Unrealized Losses	$ (18,060)	$ (543)

Investment Securities - Inves_2

Investment Securities - Investment Securities by External Credit Rating (Details) $ in Thousands	Sep. 30, 2021USD ($)
Debt Securities, Available-for-sale [Line Items]
2021	$ 1,754,910
2020	1,992,857
2019	598,053
2018	166,053
2017	122,107
Prior	246,422
Total	4,880,402
Investment securities available-for-sale
Debt Securities, Available-for-sale [Line Items]
2021	1,754,910
2020	1,838,458
2019	598,053
2018	161,247
2017	118,340
Prior	238,807
Total	4,709,815
Investment securities available-for-sale | U.S. Treasury | Aaa - Aa3
Debt Securities, Available-for-sale [Line Items]
2021	32,973
2020	14,634
2019	0
2018	21,274
2017	10,461
Prior	0
Total	79,342
Investment securities available-for-sale | Agency | Aaa - Aa3
Debt Securities, Available-for-sale [Line Items]
2021	24,393
2020	324,241
2019	44,487
2018	76,415
2017	0
Prior	46,390
Total	515,926
Investment securities available-for-sale | Agency | Baa1 - Baa3
Debt Securities, Available-for-sale [Line Items]
2021	0
2020	0
2019	0
2018	5,715
2017	0
Prior	8,452
Total	14,167
Investment securities available-for-sale | Corporate | A1 - A3
Debt Securities, Available-for-sale [Line Items]
2021	79,252
2020	57,799
2019	0
2018	0
2017	17,864
Prior	10,029
Total	164,944
Investment securities available-for-sale | Corporate | Baa1 - Baa3
Debt Securities, Available-for-sale [Line Items]
2021	36,473
2020	100,614
2019	70,704
2018	0
2017	0
Prior	13,656
Total	221,447
Investment securities available-for-sale | Municipal bonds | Aaa - Aa3
Debt Securities, Available-for-sale [Line Items]
2021	118,941
2020	725,524
2019	294,323
2018	32,429
2017	50,536
Prior	33,264
Total	1,255,017
Investment securities available-for-sale | Municipal bonds | A1 - A3
Debt Securities, Available-for-sale [Line Items]
2021	0
2020	0
2019	0
2018	0
2017	0
Prior	849
Total	849
Investment securities available-for-sale | Collateralized mortgage obligations | Aaa - Aa3
Debt Securities, Available-for-sale [Line Items]
2021	212,687
2020	224,252
2019	86,604
2018	18,523
2017	14,199
Prior	105,966
Total	662,231
Investment securities available-for-sale | Mortgage-backed securities | Aaa - Aa3
Debt Securities, Available-for-sale [Line Items]
2021	1,250,191
2020	391,394
2019	101,935
2018	6,891
2017	25,280
Prior	20,201
Total	1,795,892
Investment securities held-to-maturity
Debt Securities, Available-for-sale [Line Items]
2021	0
2020	154,399
2019	0
2018	4,806
2017	3,767
Prior	7,615
Total	170,587
Investment securities held-to-maturity | Municipal bonds | Aaa - Aa3
Debt Securities, Available-for-sale [Line Items]
2021	0
2020	154,399
2019	0
2018	0
2017	0
Prior	0
Total	154,399
Investment securities held-to-maturity | Mortgage-backed securities | Aaa - Aa3
Debt Securities, Available-for-sale [Line Items]
2021	0
2020	0
2019	0
2018	4,206
2017	3,767
Prior	6,683
Total	14,656
Investment securities held-to-maturity | Other | Baa1 - Baa3
Debt Securities, Available-for-sale [Line Items]
2021	0
2020	0
2019	0
2018	600
2017	0
Prior	932
Total	$ 1,532

Investment Securities - By Cont

Investment Securities - By Contractual Maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Amortized Cost
Due in One Year or Less	$ 10,021
Due after One Year through Five Years	460,645
Due after Five Years through Ten Years	1,567,613
Due after Ten Years	2,666,833
Amortized  Cost	4,705,112	$ 3,846,733
Fair Value
Due in One Year or Less	10,029
Due after One Year through Five Years	464,211
Due after Five Years through Ten Years	1,566,785
Due after Ten Years	2,668,790
Total	4,709,815	3,931,115
Amortized Cost
Due in One Year or Less	0
Due after One Year through Five Years	0
Due after Five Years through Ten Years	0
Due after Ten Years	170,587
Total	170,587	23,732
Fair Value
Due in One Year or Less	0
Due after One Year through Five Years	0
Due after Five Years through Ten Years	0
Due after Ten Years	169,154
Total	169,154	25,013
Amortized Cost
Due in One Year or Less	10,021
Due after One Year through Five Years	460,645
Due after Five Years through Ten Years	1,567,613
Due after Ten Years	2,837,420
Total	4,875,699
Fair Value
Due in One Year or Less	10,029
Due after One Year through Five Years	464,211
Due after Five Years through Ten Years	1,566,785
Due after Ten Years	2,837,944
Total	4,878,969
U.S. Treasury
Amortized Cost
Due in One Year or Less	0
Due after One Year through Five Years	30,126
Due after Five Years through Ten Years	47,677
Due after Ten Years	0
Amortized  Cost	77,803	30,153
Fair Value
Due in One Year or Less	0
Due after One Year through Five Years	31,734
Due after Five Years through Ten Years	47,608
Due after Ten Years	0
Total	79,342	32,533
Agency
Amortized Cost
Due in One Year or Less	0
Due after One Year through Five Years	352,023
Due after Five Years through Ten Years	135,567
Due after Ten Years	44,277
Amortized  Cost	531,867	666,702
Fair Value
Due in One Year or Less	0
Due after One Year through Five Years	353,184
Due after Five Years through Ten Years	134,426
Due after Ten Years	42,483
Total	530,093	690,386
Corporate
Amortized Cost
Due in One Year or Less	10,021
Due after One Year through Five Years	21,178
Due after Five Years through Ten Years	352,711
Due after Ten Years	0
Amortized  Cost	383,910	412,223
Fair Value
Due in One Year or Less	10,029
Due after One Year through Five Years	21,227
Due after Five Years through Ten Years	355,135
Due after Ten Years	0
Total	386,391	415,308
Municipal bonds
Amortized Cost
Due in One Year or Less	0
Due after One Year through Five Years	3,528
Due after Five Years through Ten Years	95,420
Due after Ten Years	1,138,975
Amortized  Cost	1,237,923	1,412,012
Fair Value
Due in One Year or Less	0
Due after One Year through Five Years	3,731
Due after Five Years through Ten Years	96,849
Due after Ten Years	1,155,286
Total	1,255,866	1,446,019
Amortized Cost
Due in One Year or Less	0
Due after One Year through Five Years	0
Due after Five Years through Ten Years	0
Due after Ten Years	154,399
Total	154,399
Fair Value
Due in One Year or Less	0
Due after One Year through Five Years	0
Due after Five Years through Ten Years	0
Due after Ten Years	152,163
Total	152,163
Collateralized mortgage obligations
Amortized Cost
Due in One Year or Less	0
Due after One Year through Five Years	41,692
Due after Five Years through Ten Years	226,958
Due after Ten Years	397,201
Amortized  Cost	665,851	513,259
Fair Value
Due in One Year or Less	0
Due after One Year through Five Years	41,631
Due after Five Years through Ten Years	223,612
Due after Ten Years	396,988
Total	662,231	513,366
Mortgage-backed securities
Amortized Cost
Due in One Year or Less	0
Due after One Year through Five Years	12,098
Due after Five Years through Ten Years	709,280
Due after Ten Years	1,086,380
Amortized  Cost	1,807,758	812,384
Fair Value
Due in One Year or Less	0
Due after One Year through Five Years	12,704
Due after Five Years through Ten Years	709,155
Due after Ten Years	1,074,033
Total	1,795,892	833,503
Amortized Cost
Due in One Year or Less	0
Due after One Year through Five Years	0
Due after Five Years through Ten Years	0
Due after Ten Years	14,656
Total	14,656	22,124
Fair Value
Due in One Year or Less	0
Due after One Year through Five Years	0
Due after Five Years through Ten Years	0
Due after Ten Years	15,459
Total	15,459	$ 23,405
Other
Amortized Cost
Due in One Year or Less	0
Due after One Year through Five Years	0
Due after Five Years through Ten Years	0
Due after Ten Years	1,532
Total	1,532
Fair Value
Due in One Year or Less	0
Due after One Year through Five Years	0
Due after Five Years through Ten Years	0
Due after Ten Years	1,532
Total	$ 1,532

Loans Held for Investment - Com

Loans Held for Investment - Composition of Loan Portfolio (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Dec. 31, 2019
Loans Held for Investment
Loans held for investment	$ 13,982,861		$ 13,236,433
Allowance for credit losses for loans held for investment	(211,481)	$ (232,774)	(268,018)	$ (282,503)	$ (282,271)	$ (35,698)
Loans held for investment, net	13,771,380		12,968,415
Loans held for sale, at lower of cost or fair value	8,100		601
Net deferred origination fees (costs)	3,000		2,600
Unaccreted mark-to-market discount	85,000		113,800
Total unfunded loan commitments
Loans Held for Investment
Loans held for investment	2,504,188		1,947,250
Investor loans secured by real estate
Loans Held for Investment
Loans held for investment	8,870,992		8,225,765
Investor loans secured by real estate | CRE non-owner-occupied
Loans Held for Investment
Loans held for investment	2,823,065		2,675,085
Allowance for credit losses for loans held for investment	(42,467)	(47,112)	(49,176)	(54,105)	(63,007)	(1,899)
Investor loans secured by real estate | Multifamily
Loans Held for Investment
Loans held for investment	5,705,666		5,171,356
Allowance for credit losses for loans held for investment	(52,164)	(59,059)	(62,534)	(67,336)	(63,511)	(729)
Investor loans secured by real estate | Construction and land
Loans Held for Investment
Loans held for investment	292,815		321,993
Allowance for credit losses for loans held for investment	(8,017)	(9,548)	(12,435)	(15,557)	(18,804)	(4,484)
Investor loans secured by real estate | SBA secured by real estate
Loans Held for Investment
Loans held for investment	49,446		57,331
Allowance for credit losses for loans held for investment	(3,879)	(4,681)	(5,159)	(5,327)	(2,010)	(1,915)
Business loans secured by real estate
Loans Held for Investment
Loans held for investment	2,666,582		2,541,577
Business loans secured by real estate | SBA secured by real estate
Loans Held for Investment
Loans held for investment	69,937		79,595
Allowance for credit losses for loans held for investment	(5,104)	(6,317)	(6,567)	(6,160)	(4,368)	(2,119)
Business loans secured by real estate | CRE owner-occupied
Loans Held for Investment
Loans held for investment	2,242,164		2,114,050
Allowance for credit losses for loans held for investment	(33,679)	(35,747)	(50,517)	(48,666)	(48,213)	(2,781)
Business loans secured by real estate | Franchise real estate secured
Loans Held for Investment
Loans held for investment	354,481		347,932
Allowance for credit losses for loans held for investment	(9,626)	(11,436)	(11,451)	(11,988)	(13,060)	(592)
Commercial loans
Loans Held for Investment
Loans held for investment	2,294,552		2,229,588
Commercial loans | Commercial and industrial
Loans Held for Investment
Loans held for investment	1,888,870		1,768,834
Allowance for credit losses for loans held for investment	(37,595)	(39,879)	(46,964)	(47,914)	(41,967)	(13,857)
Commercial loans | Franchise non-real estate secured
Loans Held for Investment
Loans held for investment	392,950		444,797
Allowance for credit losses for loans held for investment	(17,518)	(17,313)	(20,525)	(20,149)	(21,676)	(5,816)
Commercial loans | SBA non-real estate secured
Loans Held for Investment
Loans held for investment	12,732		15,957
Allowance for credit losses for loans held for investment	(632)	(730)	(995)	(951)	(600)	(445)
Retail loans
Loans Held for Investment
Loans held for investment	150,735		239,503
Retail loans | Single family residential
Loans Held for Investment
Loans held for investment	144,309		232,574
Allowance for credit losses for loans held for investment	(529)	(670)	(1,204)	(1,243)	(1,479)	(655)
Retail loans | Consumer
Loans Held for Investment
Loans held for investment	6,426		6,929
Allowance for credit losses for loans held for investment	$ (271)	$ (282)	$ (491)	$ (3,107)	$ (3,576)	$ (406)

Loans Held for Investment - Nar

Loans Held for Investment - Narrative (Details)	Dec. 23, 2016USD ($)	Sep. 30, 2021USD ($)loan	Mar. 31, 2021loan	Sep. 30, 2020USD ($)loan	Sep. 30, 2021USD ($)loanareagrade	Sep. 30, 2020USD ($)loan	Dec. 31, 2020USD ($)loan
Loans Held for Investment
Servicing rights retained from guaranteed portion of SBA loans sold		$ 4,100,000			$ 4,100,000		$ 5,300,000
Accrued Liabilities and Other Liabilities		216,688,000			216,688,000		243,207,000
Unpaid principal balance for loans and participations serviced for others		590,900,000			590,900,000		686,000,000
Secured loans limit to one borrower		838,400,000			838,400,000
Unsecured loans limit to one borrower		503,000,000			503,000,000
Aggregate outstanding balance of loans to one borrower of secured credit		176,800,000			$ 176,800,000
Number of areas where the entity's credit quality is maintained and credit risk managed | area					2
Number of pass scale grades | grade					6
Individually evaluated loans		35,100,000			$ 35,100,000		29,200,000
ACL attributable to individually evaluated loans		571,000			571,000		126,000
Loans on nonaccrual status		35,100,000			35,100,000		29,200,000
Total recorded balance of loans modified as TDR		$ 17,600,000			$ 17,600,000
Number of loans modified | loan		0	0
Number of TDR loans | loan		6			6
Number of loans, subsequent default | loan				0		0
Total nonaccrual loans		$ 35,090,000			$ 35,090,000		29,209,000
Interest income on nonaccrual loans		0		$ 0	0	$ 0
Consumer mortgage loans collateralized by residential real estate, foreclosure proceedings in process		$ 0			0		$ 0
COVID-19 Related Loan Modifications
Loans Held for Investment
Number of loans modified | loan		0					52
Total balance of loans modified within their OCVID-19 modification period							$ 79,500,000
Percentage of total loans held for investment							0.60%
Discounted Cash Flow Approach
Loans Held for Investment
Individually evaluated loans		$ 12,800,000			12,800,000		$ 15,200,000
Underlying Value of the Collateral
Loans Held for Investment
Individually evaluated loans		$ 22,300,000			$ 22,300,000		14,000,000
Multifamily Loan Securitization, Liability | Variable Interest Entity, Not Primary Beneficiary
Loans Held for Investment
Maximum loss, percentage of loans		10.00%			10.00%
Multifamily Loan Securitization
Loans Held for Investment
Unpaid principal balance for loans and participations serviced for others		$ 85,200,000			$ 85,200,000		99,400,000
Multifamily Loan Securitization | Variable Interest Entity, Not Primary Beneficiary
Loans Held for Investment
Accrued Liabilities and Other Liabilities		448,000			448,000		448,000
Multifamily Loan Securitization | Opus Bank
Loans Held for Investment
Proceeds from sale of loans receivable	$ 509,000,000
SBA
Loans Held for Investment
Unpaid principal balance for loans and participations serviced for others		$ 372,700,000			372,700,000		$ 421,700,000
CRE owner-occupied & Commercial and industrial
Loans Held for Investment
Total recorded balance of postmodification TDR					$ 5,200,000
CRE owner-occupied
Loans Held for Investment
Number of loans modified | loan		3			3
Commercial and industrial
Loans Held for Investment
Number of loans modified | loan		1			1
Franchise non-real estate secured
Loans Held for Investment
Number of loans modified | loan		2			2
Total recorded balance of postmodification TDR		$ 12,300,000			$ 12,300,000

Loans Held for Investment - Int

Loans Held for Investment - Internal Risk Grading System under ASC 326 (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	$ 3,483,154	$ 1,862,085
Fiscal Year before Current Fiscal Year	1,875,610	3,354,750
Two Years before Current Fiscal Year	2,573,205	2,140,513
Three Years before Current Fiscal Year	1,527,156	1,729,763
Four Years before Current Fiscal Year	1,244,757	1,072,603
Prior	2,286,095	2,152,690
Revolving	989,785	912,643
Revolving Converted to Term During the Period	3,099	11,386
Total	13,982,861	13,236,433
Investor loans secured by real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	2,346,289	1,351,350
Fiscal Year before Current Fiscal Year	1,406,768	2,386,517
Two Years before Current Fiscal Year	1,874,113	1,437,278
Three Years before Current Fiscal Year	1,026,187	988,649
Four Years before Current Fiscal Year	741,908	674,159
Prior	1,465,337	1,374,935
Revolving	10,390	12,877
Revolving Converted to Term During the Period	0	0
Total	8,870,992	8,225,765
Investor loans secured by real estate | CRE non-owner-occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Total	2,823,065	2,675,085
Investor loans secured by real estate | CRE non-owner-occupied | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	565,605	265,901
Fiscal Year before Current Fiscal Year	268,733	541,994
Two Years before Current Fiscal Year	424,397	440,351
Three Years before Current Fiscal Year	462,395	287,580
Four Years before Current Fiscal Year	219,672	279,238
Prior	823,208	791,477
Revolving	9,599	11,114
Revolving Converted to Term During the Period	0	0
Total	2,773,609	2,617,655
Investor loans secured by real estate | CRE non-owner-occupied | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	0
Fiscal Year before Current Fiscal Year	0	0
Two Years before Current Fiscal Year	16,263	6,669
Three Years before Current Fiscal Year	1,943	437
Four Years before Current Fiscal Year	0	2,516
Prior	0	29,738
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	18,206	39,360
Investor loans secured by real estate | CRE non-owner-occupied | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	0
Fiscal Year before Current Fiscal Year	0	9,732
Two Years before Current Fiscal Year	25,775	2,045
Three Years before Current Fiscal Year	0	0
Four Years before Current Fiscal Year	0	516
Prior	4,950	5,218
Revolving	525	559
Revolving Converted to Term During the Period	0	0
Total	31,250	18,070
Investor loans secured by real estate | Multifamily
Financing Receivable, Credit Quality Indicator [Line Items]
Total	5,705,666	5,171,356
Investor loans secured by real estate | Multifamily | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	1,694,447	1,027,644
Fiscal Year before Current Fiscal Year	1,012,346	1,677,716
Two Years before Current Fiscal Year	1,348,563	899,123
Three Years before Current Fiscal Year	526,744	665,939
Four Years before Current Fiscal Year	501,849	354,859
Prior	619,628	531,287
Revolving	218	420
Revolving Converted to Term During the Period	0	0
Total	5,703,795	5,156,988
Investor loans secured by real estate | Multifamily | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year		0
Fiscal Year before Current Fiscal Year		1,758
Two Years before Current Fiscal Year		2,630
Three Years before Current Fiscal Year		0
Four Years before Current Fiscal Year		8,649
Prior		0
Revolving		0
Revolving Converted to Term During the Period		0
Total		13,037
Investor loans secured by real estate | Multifamily | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	0
Fiscal Year before Current Fiscal Year	0	0
Two Years before Current Fiscal Year	0	0
Three Years before Current Fiscal Year	543	559
Four Years before Current Fiscal Year	556	772
Prior	772	0
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	1,871	1,331
Investor loans secured by real estate | Construction and land
Financing Receivable, Credit Quality Indicator [Line Items]
Total	292,815	321,993
Investor loans secured by real estate | Construction and land | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	86,107	57,309
Fiscal Year before Current Fiscal Year	125,190	144,759
Two Years before Current Fiscal Year	51,733	73,313
Three Years before Current Fiscal Year	22,134	18,625
Four Years before Current Fiscal Year	3,996	20,531
Prior	3,607	6,672
Revolving	48	784
Revolving Converted to Term During the Period	0	0
Total	292,815	321,993
Investor loans secured by real estate | SBA secured by real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Total	49,446	57,331
Investor loans secured by real estate | SBA secured by real estate | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	130	0
Fiscal Year before Current Fiscal Year	499	8,306
Two Years before Current Fiscal Year	7,373	9,029
Three Years before Current Fiscal Year	9,113	13,418
Four Years before Current Fiscal Year	12,665	6,305
Prior	9,722	7,696
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	39,502	44,754
Investor loans secured by real estate | SBA secured by real estate | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	496
Fiscal Year before Current Fiscal Year	0	1,032
Two Years before Current Fiscal Year	0	1,159
Three Years before Current Fiscal Year	962	1,000
Four Years before Current Fiscal Year	0	373
Prior	548	306
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	1,510	4,366
Investor loans secured by real estate | SBA secured by real estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	0
Fiscal Year before Current Fiscal Year	0	1,220
Two Years before Current Fiscal Year	9	2,959
Three Years before Current Fiscal Year	2,353	1,091
Four Years before Current Fiscal Year	3,170	400
Prior	2,902	2,541
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	8,434	8,211
Business loans secured by real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	737,142	344,058
Fiscal Year before Current Fiscal Year	348,383	516,400
Two Years before Current Fiscal Year	390,418	422,995
Three Years before Current Fiscal Year	285,786	446,733
Four Years before Current Fiscal Year	292,026	267,062
Prior	607,955	529,565
Revolving	4,572	14,518
Revolving Converted to Term During the Period	300	246
Total	2,666,582	2,541,577
Business loans secured by real estate | CRE non-owner-occupied | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year		344,058
Fiscal Year before Current Fiscal Year		516,400
Two Years before Current Fiscal Year		422,995
Three Years before Current Fiscal Year		446,733
Four Years before Current Fiscal Year		267,062
Prior		529,565
Revolving		14,518
Revolving Converted to Term During the Period		246
Total		2,541,577
Business loans secured by real estate | SBA secured by real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Total	69,937	79,595
Business loans secured by real estate | SBA secured by real estate | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	3,789	3,253
Fiscal Year before Current Fiscal Year	2,368	7,637
Two Years before Current Fiscal Year	7,533	12,608
Three Years before Current Fiscal Year	10,498	16,058
Four Years before Current Fiscal Year	11,230	8,488
Prior	25,181	23,624
Revolving	1,361	0
Revolving Converted to Term During the Period	0	0
Total	61,960	71,668
Business loans secured by real estate | SBA secured by real estate | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	0
Fiscal Year before Current Fiscal Year	0	0
Two Years before Current Fiscal Year	0	1,200
Three Years before Current Fiscal Year	0	0
Four Years before Current Fiscal Year	0	137
Prior	212	0
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	212	1,337
Business loans secured by real estate | SBA secured by real estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	0
Fiscal Year before Current Fiscal Year	0	0
Two Years before Current Fiscal Year	0	184
Three Years before Current Fiscal Year	1,326	1,987
Four Years before Current Fiscal Year	3,000	1,376
Prior	3,439	3,043
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	7,765	6,590
Business loans secured by real estate | CRE owner-occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Total	2,242,164	2,114,050
Business loans secured by real estate | CRE owner-occupied | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	635,469	293,324
Fiscal Year before Current Fiscal Year	302,683	409,758
Two Years before Current Fiscal Year	317,035	332,672
Three Years before Current Fiscal Year	221,806	327,475
Four Years before Current Fiscal Year	207,923	225,098
Prior	531,119	469,704
Revolving	3,211	14,268
Revolving Converted to Term During the Period	300	246
Total	2,219,546	2,072,545
Business loans secured by real estate | CRE owner-occupied | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	2,190
Fiscal Year before Current Fiscal Year	0	15,917
Two Years before Current Fiscal Year	6,078	3,802
Three Years before Current Fiscal Year	1,741	0
Four Years before Current Fiscal Year	0	4,153
Prior	0	201
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	7,819	26,263
Business loans secured by real estate | CRE owner-occupied | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	0
Fiscal Year before Current Fiscal Year	0	0
Two Years before Current Fiscal Year	0	3,636
Three Years before Current Fiscal Year	6,109	4,214
Four Years before Current Fiscal Year	2,972	1,169
Prior	5,718	5,973
Revolving	0	250
Revolving Converted to Term During the Period	0	0
Total	14,799	15,242
Business loans secured by real estate | Franchise real estate secured
Financing Receivable, Credit Quality Indicator [Line Items]
Total	354,481	347,932
Business loans secured by real estate | Franchise real estate secured | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	97,884	44,413
Fiscal Year before Current Fiscal Year	43,332	81,438
Two Years before Current Fiscal Year	59,772	66,241
Three Years before Current Fiscal Year	44,306	96,999
Four Years before Current Fiscal Year	66,901	24,673
Prior	42,286	27,020
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	354,481	340,784
Business loans secured by real estate | Franchise real estate secured | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year		878
Fiscal Year before Current Fiscal Year		1,650
Two Years before Current Fiscal Year		2,652
Three Years before Current Fiscal Year		0
Four Years before Current Fiscal Year		0
Prior		0
Revolving		0
Revolving Converted to Term During the Period		0
Total		5,180
Business loans secured by real estate | Franchise real estate secured | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year		0
Fiscal Year before Current Fiscal Year		0
Two Years before Current Fiscal Year		0
Three Years before Current Fiscal Year		0
Four Years before Current Fiscal Year		1,968
Prior		0
Revolving		0
Revolving Converted to Term During the Period		0
Total		1,968
Commercial loans
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	379,494	155,831
Fiscal Year before Current Fiscal Year	116,911	444,000
Two Years before Current Fiscal Year	306,644	266,221
Three Years before Current Fiscal Year	213,528	280,317
Four Years before Current Fiscal Year	203,854	97,412
Prior	123,041	120,099
Revolving	948,281	854,568
Revolving Converted to Term During the Period	2,799	11,140
Total	2,294,552	2,229,588
Commercial loans | Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Total	1,888,870	1,768,834
Commercial loans | Commercial and industrial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	260,359	127,082
Fiscal Year before Current Fiscal Year	89,545	260,368
Two Years before Current Fiscal Year	204,683	159,001
Three Years before Current Fiscal Year	139,560	210,163
Four Years before Current Fiscal Year	156,915	51,800
Prior	78,951	82,291
Revolving	906,369	801,752
Revolving Converted to Term During the Period	2,059	9,315
Total	1,838,441	1,701,772
Commercial loans | Commercial and industrial | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	735
Fiscal Year before Current Fiscal Year	0	0
Two Years before Current Fiscal Year	189	2,331
Three Years before Current Fiscal Year	0	185
Four Years before Current Fiscal Year	0	1,320
Prior	0	243
Revolving	14,629	17,890
Revolving Converted to Term During the Period	0	37
Total	14,818	22,741
Commercial loans | Commercial and industrial | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	650	0
Fiscal Year before Current Fiscal Year	1,759	3,310
Two Years before Current Fiscal Year	552	2,737
Three Years before Current Fiscal Year	2,854	610
Four Years before Current Fiscal Year	867	1,333
Prior	1,570	2,446
Revolving	26,619	32,858
Revolving Converted to Term During the Period	740	1,027
Total	35,611	44,321
Commercial loans | Franchise non-real estate secured
Financing Receivable, Credit Quality Indicator [Line Items]
Total	392,950	444,797
Commercial loans | Franchise non-real estate secured | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	118,333	27,607
Fiscal Year before Current Fiscal Year	24,954	164,025
Two Years before Current Fiscal Year	96,784	94,494
Three Years before Current Fiscal Year	65,300	46,174
Four Years before Current Fiscal Year	27,683	40,829
Prior	37,157	27,745
Revolving	0	1,361
Revolving Converted to Term During the Period	0	502
Total	370,211	402,737
Commercial loans | Franchise non-real estate secured | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year		0
Fiscal Year before Current Fiscal Year		7,267
Two Years before Current Fiscal Year		2,037
Three Years before Current Fiscal Year		230
Four Years before Current Fiscal Year		480
Prior		2,321
Revolving		0
Revolving Converted to Term During the Period		0
Total		12,335
Commercial loans | Franchise non-real estate secured | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	0
Fiscal Year before Current Fiscal Year	0	6,690
Two Years before Current Fiscal Year	2,236	3,706
Three Years before Current Fiscal Year	4,421	18,425
Four Years before Current Fiscal Year	14,903	700
Prior	1,179	204
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	22,739	29,725
Commercial loans | SBA non-real estate secured
Financing Receivable, Credit Quality Indicator [Line Items]
Total	12,732	15,957
Commercial loans | SBA non-real estate secured | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	152	407
Fiscal Year before Current Fiscal Year	653	2,257
Two Years before Current Fiscal Year	1,424	1,558
Three Years before Current Fiscal Year	938	2,674
Four Years before Current Fiscal Year	3,239	610
Prior	3,567	4,449
Revolving	0	0
Revolving Converted to Term During the Period	0	259
Total	9,973	12,214
Commercial loans | SBA non-real estate secured | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	0
Fiscal Year before Current Fiscal Year	0	0
Two Years before Current Fiscal Year	698	0
Three Years before Current Fiscal Year	117	1,574
Four Years before Current Fiscal Year	0	0
Prior	0	0
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	815	1,574
Commercial loans | SBA non-real estate secured | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	0
Fiscal Year before Current Fiscal Year	0	83
Two Years before Current Fiscal Year	78	357
Three Years before Current Fiscal Year	338	282
Four Years before Current Fiscal Year	247	340
Prior	617	400
Revolving	664	707
Revolving Converted to Term During the Period	0	0
Total	1,944	2,169
Retail loans
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	20,229	10,846
Fiscal Year before Current Fiscal Year	3,548	7,833
Two Years before Current Fiscal Year	2,030	14,019
Three Years before Current Fiscal Year	1,655	14,064
Four Years before Current Fiscal Year	6,969	33,970
Prior	89,762	128,091
Revolving	26,542	30,680
Revolving Converted to Term During the Period	0	0
Total	150,735	239,503
Retail loans | Single family residential
Financing Receivable, Credit Quality Indicator [Line Items]
Total	144,309	232,574
Retail loans | Single family residential | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	20,201	10,794
Fiscal Year before Current Fiscal Year	3,518	7,714
Two Years before Current Fiscal Year	1,967	13,982
Three Years before Current Fiscal Year	1,633	14,039
Four Years before Current Fiscal Year	6,954	33,968
Prior	86,711	124,248
Revolving	23,274	27,172
Revolving Converted to Term During the Period	0	0
Total	144,258	231,917
Retail loans | Single family residential | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	0
Fiscal Year before Current Fiscal Year	0	0
Two Years before Current Fiscal Year	0	0
Three Years before Current Fiscal Year	0	0
Four Years before Current Fiscal Year	0	0
Prior	51	657
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	51	657
Retail loans | Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Total	6,426	6,929
Retail loans | Consumer | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	28	52
Fiscal Year before Current Fiscal Year	30	112
Two Years before Current Fiscal Year	57	37
Three Years before Current Fiscal Year	22	25
Four Years before Current Fiscal Year	15	2
Prior	2,964	3,145
Revolving	3,268	3,508
Revolving Converted to Term During the Period	0	0
Total	6,384	6,881
Retail loans | Consumer | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	0
Fiscal Year before Current Fiscal Year	0	7
Two Years before Current Fiscal Year	6	0
Three Years before Current Fiscal Year	0	0
Four Years before Current Fiscal Year	0	0
Prior	36	41
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	$ 42	$ 48

Loans Held for Investment - Del

Loans Held for Investment - Delinquencies (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Financing Receivable, Past Due [Line Items]
Loans held for investment	$ 13,982,861	$ 13,236,433
Current
Financing Receivable, Past Due [Line Items]
Loans held for investment	13,962,683	13,223,111
30-59
Financing Receivable, Past Due [Line Items]
Loans held for investment	728	1,269
60-89
Financing Receivable, Past Due [Line Items]
Loans held for investment	936	57
90+
Financing Receivable, Past Due [Line Items]
Loans held for investment	18,514	11,996
Investor loans secured by real estate
Financing Receivable, Past Due [Line Items]
Loans held for investment	8,870,992	8,225,765
Investor loans secured by real estate | CRE non-owner-occupied
Financing Receivable, Past Due [Line Items]
Loans held for investment	2,823,065	2,675,085
Investor loans secured by real estate | Multifamily
Financing Receivable, Past Due [Line Items]
Loans held for investment	5,705,666	5,171,356
Investor loans secured by real estate | Construction and land
Financing Receivable, Past Due [Line Items]
Loans held for investment	292,815	321,993
Investor loans secured by real estate | SBA secured by real estate
Financing Receivable, Past Due [Line Items]
Loans held for investment	49,446	57,331
Investor loans secured by real estate | Current
Financing Receivable, Past Due [Line Items]
Loans held for investment	8,859,748	8,223,750
Investor loans secured by real estate | Current | CRE non-owner-occupied
Financing Receivable, Past Due [Line Items]
Loans held for investment	2,812,797	2,674,328
Investor loans secured by real estate | Current | Multifamily
Financing Receivable, Past Due [Line Items]
Loans held for investment	5,705,666	5,171,355
Investor loans secured by real estate | Current | Construction and land
Financing Receivable, Past Due [Line Items]
Loans held for investment	292,815	321,993
Investor loans secured by real estate | Current | SBA secured by real estate
Financing Receivable, Past Due [Line Items]
Loans held for investment	48,470	56,074
Investor loans secured by real estate | 30-59
Financing Receivable, Past Due [Line Items]
Loans held for investment	0	1
Investor loans secured by real estate | 30-59 | CRE non-owner-occupied
Financing Receivable, Past Due [Line Items]
Loans held for investment	0	0
Investor loans secured by real estate | 30-59 | Multifamily
Financing Receivable, Past Due [Line Items]
Loans held for investment	0	1
Investor loans secured by real estate | 30-59 | Construction and land
Financing Receivable, Past Due [Line Items]
Loans held for investment	0	0
Investor loans secured by real estate | 30-59 | SBA secured by real estate
Financing Receivable, Past Due [Line Items]
Loans held for investment	0	0
Investor loans secured by real estate | 60-89
Financing Receivable, Past Due [Line Items]
Loans held for investment	629	0
Investor loans secured by real estate | 60-89 | CRE non-owner-occupied
Financing Receivable, Past Due [Line Items]
Loans held for investment	0	0
Investor loans secured by real estate | 60-89 | Multifamily
Financing Receivable, Past Due [Line Items]
Loans held for investment	0	0
Investor loans secured by real estate | 60-89 | Construction and land
Financing Receivable, Past Due [Line Items]
Loans held for investment	0	0
Investor loans secured by real estate | 60-89 | SBA secured by real estate
Financing Receivable, Past Due [Line Items]
Loans held for investment	629	0
Investor loans secured by real estate | 90+
Financing Receivable, Past Due [Line Items]
Loans held for investment	10,615	2,014
Investor loans secured by real estate | 90+ | CRE non-owner-occupied
Financing Receivable, Past Due [Line Items]
Loans held for investment	10,268	757
Investor loans secured by real estate | 90+ | Multifamily
Financing Receivable, Past Due [Line Items]
Loans held for investment	0	0
Investor loans secured by real estate | 90+ | Construction and land
Financing Receivable, Past Due [Line Items]
Loans held for investment	0	0
Investor loans secured by real estate | 90+ | SBA secured by real estate
Financing Receivable, Past Due [Line Items]
Loans held for investment	347	1,257
Business loans secured by real estate
Financing Receivable, Past Due [Line Items]
Loans held for investment	2,666,582	2,541,577
Business loans secured by real estate | SBA secured by real estate
Financing Receivable, Past Due [Line Items]
Loans held for investment	69,937	79,595
Business loans secured by real estate | CRE owner-occupied
Financing Receivable, Past Due [Line Items]
Loans held for investment	2,242,164	2,114,050
Business loans secured by real estate | Franchise real estate secured
Financing Receivable, Past Due [Line Items]
Loans held for investment	354,481	347,932
Business loans secured by real estate | Current
Financing Receivable, Past Due [Line Items]
Loans held for investment	2,661,163	2,534,714
Business loans secured by real estate | Current | SBA secured by real estate
Financing Receivable, Past Due [Line Items]
Loans held for investment	69,496	78,036
Business loans secured by real estate | Current | CRE owner-occupied
Financing Receivable, Past Due [Line Items]
Loans held for investment	2,237,186	2,108,746
Business loans secured by real estate | Current | Franchise real estate secured
Financing Receivable, Past Due [Line Items]
Loans held for investment	354,481	347,932
Business loans secured by real estate | 30-59
Financing Receivable, Past Due [Line Items]
Loans held for investment	0	486
Business loans secured by real estate | 30-59 | SBA secured by real estate
Financing Receivable, Past Due [Line Items]
Loans held for investment	0	486
Business loans secured by real estate | 30-59 | CRE owner-occupied
Financing Receivable, Past Due [Line Items]
Loans held for investment	0	0
Business loans secured by real estate | 30-59 | Franchise real estate secured
Financing Receivable, Past Due [Line Items]
Loans held for investment	0	0
Business loans secured by real estate | 60-89
Financing Receivable, Past Due [Line Items]
Loans held for investment	0	0
Business loans secured by real estate | 60-89 | SBA secured by real estate
Financing Receivable, Past Due [Line Items]
Loans held for investment	0	0
Business loans secured by real estate | 60-89 | CRE owner-occupied
Financing Receivable, Past Due [Line Items]
Loans held for investment	0	0
Business loans secured by real estate | 60-89 | Franchise real estate secured
Financing Receivable, Past Due [Line Items]
Loans held for investment	0	0
Business loans secured by real estate | 90+
Financing Receivable, Past Due [Line Items]
Loans held for investment	5,419	6,377
Business loans secured by real estate | 90+ | SBA secured by real estate
Financing Receivable, Past Due [Line Items]
Loans held for investment	441	1,073
Business loans secured by real estate | 90+ | CRE owner-occupied
Financing Receivable, Past Due [Line Items]
Loans held for investment	4,978	5,304
Business loans secured by real estate | 90+ | Franchise real estate secured
Financing Receivable, Past Due [Line Items]
Loans held for investment	0	0
Commercial loans
Financing Receivable, Past Due [Line Items]
Loans held for investment	2,294,552	2,229,588
Commercial loans | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Loans held for investment	1,888,870	1,768,834
Commercial loans | Franchise non-real estate secured
Financing Receivable, Past Due [Line Items]
Loans held for investment	392,950	444,797
Commercial loans | SBA non-real estate secured
Financing Receivable, Past Due [Line Items]
Loans held for investment	12,732	15,957
Commercial loans | Current
Financing Receivable, Past Due [Line Items]
Loans held for investment	2,291,037	2,225,160
Commercial loans | Current | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Loans held for investment	1,886,386	1,765,451
Commercial loans | Current | Franchise non-real estate secured
Financing Receivable, Past Due [Line Items]
Loans held for investment	392,950	444,797
Commercial loans | Current | SBA non-real estate secured
Financing Receivable, Past Due [Line Items]
Loans held for investment	11,701	14,912
Commercial loans | 30-59
Financing Receivable, Past Due [Line Items]
Loans held for investment	728	766
Commercial loans | 30-59 | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Loans held for investment	654	428
Commercial loans | 30-59 | Franchise non-real estate secured
Financing Receivable, Past Due [Line Items]
Loans held for investment	0	0
Commercial loans | 30-59 | SBA non-real estate secured
Financing Receivable, Past Due [Line Items]
Loans held for investment	74	338
Commercial loans | 60-89
Financing Receivable, Past Due [Line Items]
Loans held for investment	307	57
Commercial loans | 60-89 | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Loans held for investment	14	57
Commercial loans | 60-89 | Franchise non-real estate secured
Financing Receivable, Past Due [Line Items]
Loans held for investment	0	0
Commercial loans | 60-89 | SBA non-real estate secured
Financing Receivable, Past Due [Line Items]
Loans held for investment	293	0
Commercial loans | 90+
Financing Receivable, Past Due [Line Items]
Loans held for investment	2,480	3,605
Commercial loans | 90+ | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Loans held for investment	1,816	2,898
Commercial loans | 90+ | Franchise non-real estate secured
Financing Receivable, Past Due [Line Items]
Loans held for investment	0	0
Commercial loans | 90+ | SBA non-real estate secured
Financing Receivable, Past Due [Line Items]
Loans held for investment	664	707
Retail loans
Financing Receivable, Past Due [Line Items]
Loans held for investment	150,735	239,503
Retail loans | Single family residential
Financing Receivable, Past Due [Line Items]
Loans held for investment	144,309	232,574
Retail loans | Consumer
Financing Receivable, Past Due [Line Items]
Loans held for investment	6,426	6,929
Retail loans | Current
Financing Receivable, Past Due [Line Items]
Loans held for investment	150,735	239,487
Retail loans | Current | Single family residential
Financing Receivable, Past Due [Line Items]
Loans held for investment	144,309	232,559
Retail loans | Current | Consumer
Financing Receivable, Past Due [Line Items]
Loans held for investment	6,426	6,928
Retail loans | 30-59
Financing Receivable, Past Due [Line Items]
Loans held for investment	0	16
Retail loans | 30-59 | Single family residential
Financing Receivable, Past Due [Line Items]
Loans held for investment	0	15
Retail loans | 30-59 | Consumer
Financing Receivable, Past Due [Line Items]
Loans held for investment	0	1
Retail loans | 60-89
Financing Receivable, Past Due [Line Items]
Loans held for investment	0	0
Retail loans | 60-89 | Single family residential
Financing Receivable, Past Due [Line Items]
Loans held for investment	0	0
Retail loans | 60-89 | Consumer
Financing Receivable, Past Due [Line Items]
Loans held for investment	0	0
Retail loans | 90+
Financing Receivable, Past Due [Line Items]
Loans held for investment	0	0
Retail loans | 90+ | Single family residential
Financing Receivable, Past Due [Line Items]
Loans held for investment	0	0
Retail loans | 90+ | Consumer
Financing Receivable, Past Due [Line Items]
Loans held for investment	$ 0	$ 0

Loans Held for Investment - Non

Loans Held for Investment - Nonaccrual Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Financing Receivable, Nonaccrual [Line Items]
Collateral Dependent Loans	$ 22,314	$ 14,037
ACL	571	0
Non-Collateral Dependent Loans	12,776	15,172
ACL	0	126
Total Nonaccrual Loans	35,090	29,209
Nonaccrual Loans with No ACL	27,474	27,968
Investor loans secured by real estate
Financing Receivable, Nonaccrual [Line Items]
Collateral Dependent Loans	13,155	4,049
ACL	571	0
Non-Collateral Dependent Loans	0	0
ACL	0	0
Total Nonaccrual Loans	13,155	4,049
Nonaccrual Loans with No ACL	5,539	4,049
Investor loans secured by real estate | CRE non-owner-occupied
Financing Receivable, Nonaccrual [Line Items]
Collateral Dependent Loans	12,179	2,792
ACL	571	0
Non-Collateral Dependent Loans	0	0
ACL	0	0
Total Nonaccrual Loans	12,179	2,792
Nonaccrual Loans with No ACL	4,563	2,792
Investor loans secured by real estate | SBA secured by real estate
Financing Receivable, Nonaccrual [Line Items]
Collateral Dependent Loans	976	1,257
ACL	0	0
Non-Collateral Dependent Loans	0	0
ACL	0	0
Total Nonaccrual Loans	976	1,257
Nonaccrual Loans with No ACL	976	1,257
Business loans secured by real estate
Financing Receivable, Nonaccrual [Line Items]
Collateral Dependent Loans	5,582	7,226
ACL	0	0
Non-Collateral Dependent Loans	0	0
ACL	0	0
Total Nonaccrual Loans	5,582	7,226
Nonaccrual Loans with No ACL	5,582	7,226
Business loans secured by real estate | SBA secured by real estate
Financing Receivable, Nonaccrual [Line Items]
Collateral Dependent Loans	604	1,143
ACL	0	0
Non-Collateral Dependent Loans	0	0
ACL	0	0
Total Nonaccrual Loans	604	1,143
Nonaccrual Loans with No ACL	604	1,143
Business loans secured by real estate | CRE owner-occupied
Financing Receivable, Nonaccrual [Line Items]
Collateral Dependent Loans	4,978	6,083
ACL	0	0
Non-Collateral Dependent Loans	0	0
ACL	0	0
Total Nonaccrual Loans	4,978	6,083
Nonaccrual Loans with No ACL	4,978	6,083
Commercial loans
Financing Receivable, Nonaccrual [Line Items]
Collateral Dependent Loans	3,566	2,747
ACL	0	0
Non-Collateral Dependent Loans	12,776	15,172
ACL	0	126
Total Nonaccrual Loans	16,342	17,919
Nonaccrual Loans with No ACL	16,342	16,678
Commercial loans | Commercial and industrial
Financing Receivable, Nonaccrual [Line Items]
Collateral Dependent Loans	1,816	2,040
ACL	0	0
Non-Collateral Dependent Loans	443	1,934
ACL	0	126
Total Nonaccrual Loans	2,259	3,974
Nonaccrual Loans with No ACL	2,259	2,733
Commercial loans | Franchise non-real estate secured
Financing Receivable, Nonaccrual [Line Items]
Collateral Dependent Loans	1,086	0
ACL	0	0
Non-Collateral Dependent Loans	12,333	13,238
ACL	0	0
Total Nonaccrual Loans	13,419	13,238
Nonaccrual Loans with No ACL	13,419	13,238
Commercial loans | SBA non-real estate secured
Financing Receivable, Nonaccrual [Line Items]
Collateral Dependent Loans	664	707
ACL	0	0
Non-Collateral Dependent Loans	0	0
ACL	0	0
Total Nonaccrual Loans	664	707
Nonaccrual Loans with No ACL	664	707
Retail loans
Financing Receivable, Nonaccrual [Line Items]
Collateral Dependent Loans	11	15
ACL	0	0
Non-Collateral Dependent Loans	0	0
ACL	0	0
Total Nonaccrual Loans	11	15
Nonaccrual Loans with No ACL	11	15
Retail loans | Single family residential
Financing Receivable, Nonaccrual [Line Items]
Collateral Dependent Loans	11	15
ACL	0	0
Non-Collateral Dependent Loans	0	0
ACL	0	0
Total Nonaccrual Loans	11	15
Nonaccrual Loans with No ACL	$ 11	$ 15

Loans Held for Investment - Col

Loans Held for Investment - Collateral Dependent Loans by Collateral Type (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	$ 22,314	$ 14,037
Office Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	163	288
Industrial Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	441	1,536
Retail Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	2,437	2,594
Land Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	5,224	5,304
Hotel Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	10,718	1,455
Residential Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	251	113
Business Assets
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	3,080	2,747
Investor loans secured by real estate
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	13,155	4,049
Investor loans secured by real estate | Office Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Investor loans secured by real estate | Industrial Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Investor loans secured by real estate | Retail Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	2,437	2,594
Investor loans secured by real estate | Land Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Investor loans secured by real estate | Hotel Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	10,718	1,455
Investor loans secured by real estate | Residential Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Investor loans secured by real estate | Business Assets
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Investor loans secured by real estate | CRE non-owner-occupied
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	12,179	2,792
Investor loans secured by real estate | CRE non-owner-occupied | Office Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Investor loans secured by real estate | CRE non-owner-occupied | Industrial Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Investor loans secured by real estate | CRE non-owner-occupied | Retail Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	2,437	2,594
Investor loans secured by real estate | CRE non-owner-occupied | Land Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Investor loans secured by real estate | CRE non-owner-occupied | Hotel Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	9,742	198
Investor loans secured by real estate | CRE non-owner-occupied | Residential Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Investor loans secured by real estate | CRE non-owner-occupied | Business Assets
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Investor loans secured by real estate | SBA secured by real estate
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	976	1,257
Investor loans secured by real estate | SBA secured by real estate | Office Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Investor loans secured by real estate | SBA secured by real estate | Industrial Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Investor loans secured by real estate | SBA secured by real estate | Retail Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Investor loans secured by real estate | SBA secured by real estate | Land Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Investor loans secured by real estate | SBA secured by real estate | Hotel Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	976	1,257
Investor loans secured by real estate | SBA secured by real estate | Residential Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Investor loans secured by real estate | SBA secured by real estate | Business Assets
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Business loans secured by real estate
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	5,582	7,226
Business loans secured by real estate | Office Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	163	288
Business loans secured by real estate | Industrial Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	441	1,536
Business loans secured by real estate | Retail Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Business loans secured by real estate | Land Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	4,978	5,304
Business loans secured by real estate | Hotel Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Business loans secured by real estate | Residential Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	98
Business loans secured by real estate | Business Assets
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Business loans secured by real estate | SBA secured by real estate
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	604	1,143
Business loans secured by real estate | SBA secured by real estate | Office Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	163	288
Business loans secured by real estate | SBA secured by real estate | Industrial Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	441	757
Business loans secured by real estate | SBA secured by real estate | Retail Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Business loans secured by real estate | SBA secured by real estate | Land Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Business loans secured by real estate | SBA secured by real estate | Hotel Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Business loans secured by real estate | SBA secured by real estate | Residential Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	98
Business loans secured by real estate | SBA secured by real estate | Business Assets
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Business loans secured by real estate | CRE owner-occupied
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	4,978	6,083
Business loans secured by real estate | CRE owner-occupied | Office Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Business loans secured by real estate | CRE owner-occupied | Industrial Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	779
Business loans secured by real estate | CRE owner-occupied | Retail Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Business loans secured by real estate | CRE owner-occupied | Land Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	4,978	5,304
Business loans secured by real estate | CRE owner-occupied | Hotel Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Business loans secured by real estate | CRE owner-occupied | Residential Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Business loans secured by real estate | CRE owner-occupied | Business Assets
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Commercial loans
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	3,566	2,747
Commercial loans | Office Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Commercial loans | Industrial Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Commercial loans | Retail Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Commercial loans | Land Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	246	0
Commercial loans | Hotel Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Commercial loans | Residential Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	240	0
Commercial loans | Business Assets
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	3,080	2,747
Commercial loans | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	1,816	2,040
Commercial loans | Commercial and industrial | Office Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Commercial loans | Commercial and industrial | Industrial Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Commercial loans | Commercial and industrial | Retail Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Commercial loans | Commercial and industrial | Land Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	246	0
Commercial loans | Commercial and industrial | Hotel Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Commercial loans | Commercial and industrial | Residential Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	240	0
Commercial loans | Commercial and industrial | Business Assets
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	1,330	2,040
Commercial loans | Franchise non-real estate secured
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	1,086
Commercial loans | Franchise non-real estate secured | Office Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0
Commercial loans | Franchise non-real estate secured | Industrial Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0
Commercial loans | Franchise non-real estate secured | Retail Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0
Commercial loans | Franchise non-real estate secured | Land Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0
Commercial loans | Franchise non-real estate secured | Hotel Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0
Commercial loans | Franchise non-real estate secured | Residential Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0
Commercial loans | Franchise non-real estate secured | Business Assets
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	1,086
Commercial loans | SBA non-real estate secured
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	664	707
Commercial loans | SBA non-real estate secured | Office Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Commercial loans | SBA non-real estate secured | Industrial Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Commercial loans | SBA non-real estate secured | Retail Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Commercial loans | SBA non-real estate secured | Land Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Commercial loans | SBA non-real estate secured | Hotel Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Commercial loans | SBA non-real estate secured | Residential Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Commercial loans | SBA non-real estate secured | Business Assets
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	664	707
Retail loans
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	11	15
Retail loans | Office Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Retail loans | Industrial Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Retail loans | Retail Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Retail loans | Land Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Retail loans | Hotel Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Retail loans | Residential Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	11	15
Retail loans | Business Assets
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Retail loans | Single family residential
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	11	15
Retail loans | Single family residential | Office Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Retail loans | Single family residential | Industrial Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Retail loans | Single family residential | Retail Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Retail loans | Single family residential | Land Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Retail loans | Single family residential | Hotel Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	0	0
Retail loans | Single family residential | Residential Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	11	15
Retail loans | Single family residential | Business Assets
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	$ 0	$ 0

Allowance for Credit Losses - N

Allowance for Credit Losses - Narrative (Details) - USD ($) $ in Thousands	Jun. 01, 2020	Sep. 30, 2021	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Jun. 30, 2021	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Allowance for Credit Loss [Line Items]
Qualitative adjustments included in the ACL		$ 6,500			$ 6,500
Increase (decrease) in ACL during period		21,300	$ (232)		56,500	$ (246,800)
Provision for Credit Losses		(19,543)	4,702		(52,359)	180,341
Net charge-offs		1,800	4,500		4,200	10,500
Loans held for investment		13,982,861			13,982,861			$ 13,236,433
Initial ACL Recorded for PCD Loans						21,242
Off-balance sheet commitments		27,200	492		27,200	492	$ 27,400	$ 31,100
Provision for credit losses for off-balance sheet commitments		$ 194	$ 10,000		$ 3,900	10,000
Financial Asset Acquired with Credit Deterioration
Financing Receivable, Allowance for Credit Loss [Line Items]
Provision for credit losses for off-balance sheet commitments						1,400
Opus Bank
Financing Receivable, Allowance for Credit Loss [Line Items]
Provision for Credit Losses	$ 75,900					$ 75,900
Initial ACL Recorded for PCD Loans	$ 21,200
Provision for credit losses for off-balance sheet commitments				$ 8,600
Cumulative Effect of the Change in Accounting Principle
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans held for investment									$ 55,700

Allowance for Credit Losses - A

Allowance for Credit Losses - Allocation of Allowance for Loan and Lease Losses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance	$ 232,774	$ 282,271	$ 268,018	$ 35,698
Initial ACL Recorded for PCD Loans				21,242
Charge-offs	(2,640)	(5,487)	(7,882)	(11,609)
Recoveries	890	1,017	3,704	1,145
Provision for Credit Losses	(19,543)	4,702	(52,359)	180,341
Ending ACL Balance	211,481	282,503	211,481	282,503
Investor loans secured by real estate | CRE non-owner-occupied
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance	47,112	63,007	49,176	1,899
Initial ACL Recorded for PCD Loans				3,025
Charge-offs	0	(443)	(154)	(830)
Recoveries	0	0	0	0
Provision for Credit Losses	(4,645)	(8,459)	(6,555)	41,588
Ending ACL Balance	42,467	54,105	42,467	54,105
Investor loans secured by real estate | Multifamily
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance	59,059	63,511	62,534	729
Initial ACL Recorded for PCD Loans				8,710
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision for Credit Losses	(6,895)	3,825	(10,370)	48,723
Ending ACL Balance	52,164	67,336	52,164	67,336
Investor loans secured by real estate | Construction and land
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance	9,548	18,804	12,435	4,484
Initial ACL Recorded for PCD Loans				2,051
Charge-offs	0	(377)	0	(377)
Recoveries	0	0	0	0
Provision for Credit Losses	(1,531)	(2,870)	(4,418)	9,523
Ending ACL Balance	8,017	15,557	8,017	15,557
Investor loans secured by real estate | SBA secured by real estate
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance	4,681	2,010	5,159	1,915
Initial ACL Recorded for PCD Loans				0
Charge-offs	(158)	(145)	(423)	(699)
Recoveries	0	34	0	34
Provision for Credit Losses	(644)	3,428	(857)	5,478
Ending ACL Balance	3,879	5,327	3,879	5,327
Business loans secured by real estate | SBA secured by real estate
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance	6,317	4,368	6,567	2,119
Initial ACL Recorded for PCD Loans				235
Charge-offs	0	0	(98)	(315)
Recoveries	50	76	130	147
Provision for Credit Losses	(1,263)	1,716	(1,495)	1,767
Ending ACL Balance	5,104	6,160	5,104	6,160
Business loans secured by real estate | CRE owner-occupied
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance	35,747	48,213	50,517	2,781
Initial ACL Recorded for PCD Loans				3,766
Charge-offs	0	(1,739)	0	(1,739)
Recoveries	14	21	44	44
Provision for Credit Losses	(2,082)	2,171	(16,882)	23,648
Ending ACL Balance	33,679	48,666	33,679	48,666
Business loans secured by real estate | Franchise real estate secured
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance	11,436	13,060	11,451	592
Initial ACL Recorded for PCD Loans				0
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision for Credit Losses	(1,810)	(1,072)	(1,825)	6,197
Ending ACL Balance	9,626	11,988	9,626	11,988
Commercial loans | Commercial and industrial
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance	39,879	41,967	46,964	13,857
Initial ACL Recorded for PCD Loans				2,325
Charge-offs	(84)	(2,437)	(4,653)	(5,213)
Recoveries	729	10	3,428	37
Provision for Credit Losses	(2,929)	8,374	(8,144)	36,821
Ending ACL Balance	37,595	47,914	37,595	47,914
Commercial loans | Franchise non-real estate secured
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance	17,313	21,676	20,525	5,816
Initial ACL Recorded for PCD Loans				0
Charge-offs	(2,398)	(207)	(2,554)	(1,434)
Recoveries	80	865	80	865
Provision for Credit Losses	2,523	(2,185)	(533)	5,688
Ending ACL Balance	17,518	20,149	17,518	20,149
Commercial loans | SBA non-real estate secured
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance	730	600	995	445
Initial ACL Recorded for PCD Loans				924
Charge-offs	0	(10)	0	(803)
Recoveries	15	8	19	13
Provision for Credit Losses	(113)	353	(382)	154
Ending ACL Balance	632	951	632	951
Retail loans | Single family residential
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance	670	1,479	1,204	655
Initial ACL Recorded for PCD Loans				206
Charge-offs	0	0	0	(62)
Recoveries	2	2	3	3
Provision for Credit Losses	(143)	(238)	(678)	(100)
Ending ACL Balance	529	1,243	529	1,243
Retail loans | Consumer
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance	282	3,576	491	406
Initial ACL Recorded for PCD Loans				0
Charge-offs	0	(129)	0	(137)
Recoveries	0	1	0	2
Provision for Credit Losses	(11)	(341)	(220)	854
Ending ACL Balance	$ 271	$ 3,107	$ 271	3,107
Cumulative Effect of the Change in Accounting Principle
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance				55,686
Cumulative Effect of the Change in Accounting Principle | Investor loans secured by real estate | CRE non-owner-occupied
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance				8,423
Cumulative Effect of the Change in Accounting Principle | Investor loans secured by real estate | Multifamily
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance				9,174
Cumulative Effect of the Change in Accounting Principle | Investor loans secured by real estate | Construction and land
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance				(124)
Cumulative Effect of the Change in Accounting Principle | Investor loans secured by real estate | SBA secured by real estate
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance				(1,401)
Cumulative Effect of the Change in Accounting Principle | Business loans secured by real estate | SBA secured by real estate
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance				2,207
Cumulative Effect of the Change in Accounting Principle | Business loans secured by real estate | CRE owner-occupied
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance				20,166
Cumulative Effect of the Change in Accounting Principle | Business loans secured by real estate | Franchise real estate secured
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance				5,199
Cumulative Effect of the Change in Accounting Principle | Commercial loans | Commercial and industrial
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance				87
Cumulative Effect of the Change in Accounting Principle | Commercial loans | Franchise non-real estate secured
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance				9,214
Cumulative Effect of the Change in Accounting Principle | Commercial loans | SBA non-real estate secured
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance				218
Cumulative Effect of the Change in Accounting Principle | Retail loans | Single family residential
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance				541
Cumulative Effect of the Change in Accounting Principle | Retail loans | Consumer
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance				$ 1,982

Allowance for Credit Losses - C

Allowance for Credit Losses - Commercial Real Estate and Commercial Loan Segments (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	$ 3,483,154	$ 1,862,085
Fiscal Year before Current Fiscal Year	1,875,610	3,354,750
Two Years before Current Fiscal Year	2,573,205	2,140,513
Three Years before Current Fiscal Year	1,527,156	1,729,763
Four Years before Current Fiscal Year	1,244,757	1,072,603
Prior	2,286,095	2,152,690
Revolving	989,785	912,643
Revolving Converted to Term During the Period	3,099	11,386
Total	13,982,861	13,236,433
Investor loans secured by real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	2,346,289	1,351,350
Fiscal Year before Current Fiscal Year	1,406,768	2,386,517
Two Years before Current Fiscal Year	1,874,113	1,437,278
Three Years before Current Fiscal Year	1,026,187	988,649
Four Years before Current Fiscal Year	741,908	674,159
Prior	1,465,337	1,374,935
Revolving	10,390	12,877
Revolving Converted to Term During the Period	0	0
Total	8,870,992	8,225,765
Investor loans secured by real estate | CRE non-owner-occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total	2,823,065	2,675,085
Investor loans secured by real estate | CRE non-owner-occupied | 0% - 5.00%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	530,275	261,885
Fiscal Year before Current Fiscal Year	239,267	491,522
Two Years before Current Fiscal Year	392,557	431,791
Three Years before Current Fiscal Year	421,922	266,942
Four Years before Current Fiscal Year	198,651	254,527
Prior	722,951	763,101
Revolving	4,270	11,114
Revolving Converted to Term During the Period	0	0
Total	2,509,893	2,480,882
Investor loans secured by real estate | CRE non-owner-occupied | >5.00% - 10.00%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	35,330	4,016
Fiscal Year before Current Fiscal Year	24,645	34,360
Two Years before Current Fiscal Year	23,757	5,794
Three Years before Current Fiscal Year	9,755	10,558
Four Years before Current Fiscal Year	11,088	16,961
Prior	53,696	33,734
Revolving	5,329	0
Revolving Converted to Term During the Period	0	0
Total	163,600	105,423
Investor loans secured by real estate | CRE non-owner-occupied | Greater than 10%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	0	0
Fiscal Year before Current Fiscal Year	4,821	25,844
Two Years before Current Fiscal Year	50,121	11,480
Three Years before Current Fiscal Year	32,661	10,517
Four Years before Current Fiscal Year	9,933	10,782
Prior	51,511	29,598
Revolving	525	559
Revolving Converted to Term During the Period	0	0
Total	149,572	88,780
Investor loans secured by real estate | Multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Total	5,705,666	5,171,356
Investor loans secured by real estate | Multifamily | 0% - 5.00%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	1,660,670	950,089
Fiscal Year before Current Fiscal Year	962,609	1,610,011
Two Years before Current Fiscal Year	1,316,575	878,233
Three Years before Current Fiscal Year	520,329	634,268
Four Years before Current Fiscal Year	500,815	349,549
Prior	609,731	516,452
Revolving	218	0
Revolving Converted to Term During the Period	0	0
Total	5,570,947	4,938,602
Investor loans secured by real estate | Multifamily | >5.00% - 10.00%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	28,718	38,892
Fiscal Year before Current Fiscal Year	49,737	59,500
Two Years before Current Fiscal Year	31,988	12,181
Three Years before Current Fiscal Year	6,958	19,751
Four Years before Current Fiscal Year	1,590	10,917
Prior	8,314	13,606
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	127,305	154,847
Investor loans secured by real estate | Multifamily | Greater than 10%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	5,059	38,663
Fiscal Year before Current Fiscal Year	0	9,963
Two Years before Current Fiscal Year	0	11,339
Three Years before Current Fiscal Year	0	12,479
Four Years before Current Fiscal Year	0	3,814
Prior	2,355	1,229
Revolving	0	420
Revolving Converted to Term During the Period	0	0
Total	7,414	77,907
Investor loans secured by real estate | Construction and land
Financing Receivable, Allowance for Credit Loss [Line Items]
Total	292,815	321,993
Investor loans secured by real estate | Construction and land | 0% - 5.00%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	56,187	55,785
Fiscal Year before Current Fiscal Year	82,557	40,860
Two Years before Current Fiscal Year	2,329	4,604
Three Years before Current Fiscal Year	991	11,238
Four Years before Current Fiscal Year	3,996	0
Prior	3,607	6,412
Revolving	48	784
Revolving Converted to Term During the Period	0	0
Total	149,715	119,683
Investor loans secured by real estate | Construction and land | >5.00% - 10.00%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	21,654	1,123
Fiscal Year before Current Fiscal Year	11,027	41,046
Two Years before Current Fiscal Year	1,700	9,197
Three Years before Current Fiscal Year	0	3,601
Four Years before Current Fiscal Year	0	0
Prior	0	260
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	34,381	55,227
Investor loans secured by real estate | Construction and land | Greater than 10%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	8,266	401
Fiscal Year before Current Fiscal Year	31,606	62,853
Two Years before Current Fiscal Year	47,704	59,512
Three Years before Current Fiscal Year	21,143	3,786
Four Years before Current Fiscal Year	0	20,531
Prior	0	0
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	108,719	147,083
Investor loans secured by real estate | SBA secured by real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total	49,446	57,331
Investor loans secured by real estate | SBA secured by real estate | 0% - 5.00%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	130	496
Fiscal Year before Current Fiscal Year	499	10,400
Two Years before Current Fiscal Year	7,373	12,558
Three Years before Current Fiscal Year	12,428	14,497
Four Years before Current Fiscal Year	15,206	7,078
Prior	12,834	10,032
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	48,470	55,061
Investor loans secured by real estate | SBA secured by real estate | >5.00% - 10.00%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	0	0
Fiscal Year before Current Fiscal Year	0	0
Two Years before Current Fiscal Year	0	0
Three Years before Current Fiscal Year	0	1,012
Four Years before Current Fiscal Year	0	0
Prior	0	0
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	0	1,012
Investor loans secured by real estate | SBA secured by real estate | Greater than 10%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	0	0
Fiscal Year before Current Fiscal Year	0	158
Two Years before Current Fiscal Year	9	589
Three Years before Current Fiscal Year	0	0
Four Years before Current Fiscal Year	629	0
Prior	338	511
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	976	1,258
Business loans secured by real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	737,142	344,058
Fiscal Year before Current Fiscal Year	348,383	516,400
Two Years before Current Fiscal Year	390,418	422,995
Three Years before Current Fiscal Year	285,786	446,733
Four Years before Current Fiscal Year	292,026	267,062
Prior	607,955	529,565
Revolving	4,572	14,518
Revolving Converted to Term During the Period	300	246
Total	2,666,582	2,541,577
Business loans secured by real estate | SBA secured by real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total	69,937	79,595
Business loans secured by real estate | SBA secured by real estate | 0% - 5.00%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	3,789	3,253
Fiscal Year before Current Fiscal Year	2,368	7,637
Two Years before Current Fiscal Year	6,237	11,840
Three Years before Current Fiscal Year	9,605	15,069
Four Years before Current Fiscal Year	8,900	5,707
Prior	16,909	18,742
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	47,808	62,248
Business loans secured by real estate | SBA secured by real estate | >5.00% - 10.00%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	0	0
Fiscal Year before Current Fiscal Year	0	0
Two Years before Current Fiscal Year	1,296	768
Three Years before Current Fiscal Year	893	989
Four Years before Current Fiscal Year	2,318	2,780
Prior	8,273	4,882
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	12,780	9,419
Business loans secured by real estate | SBA secured by real estate | Greater than 10%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	0	0
Fiscal Year before Current Fiscal Year	0	0
Two Years before Current Fiscal Year	0	1,384
Three Years before Current Fiscal Year	1,326	1,987
Four Years before Current Fiscal Year	3,012	1,514
Prior	3,650	3,043
Revolving	1,361	0
Revolving Converted to Term During the Period	0	0
Total	9,349	7,928
Business loans secured by real estate | CRE owner-occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total	2,242,164	2,114,050
Business loans secured by real estate | CRE owner-occupied | 0% - 5.00%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	635,469	286,745
Fiscal Year before Current Fiscal Year	302,683	367,269
Two Years before Current Fiscal Year	315,267	274,512
Three Years before Current Fiscal Year	215,974	295,809
Four Years before Current Fiscal Year	201,190	202,282
Prior	499,308	422,614
Revolving	3,211	10,393
Revolving Converted to Term During the Period	300	246
Total	2,173,402	1,859,870
Business loans secured by real estate | CRE owner-occupied | >5.00% - 10.00%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	0	8,769
Fiscal Year before Current Fiscal Year	0	42,310
Two Years before Current Fiscal Year	7,846	60,222
Three Years before Current Fiscal Year	7,573	28,421
Four Years before Current Fiscal Year	6,733	23,875
Prior	31,811	44,855
Revolving	0	3,875
Revolving Converted to Term During the Period	0	0
Total	53,963	212,327
Business loans secured by real estate | CRE owner-occupied | Greater than 10%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	0	0
Fiscal Year before Current Fiscal Year	0	16,096
Two Years before Current Fiscal Year	0	5,376
Three Years before Current Fiscal Year	6,109	7,459
Four Years before Current Fiscal Year	2,972	4,263
Prior	5,718	8,409
Revolving	0	250
Revolving Converted to Term During the Period	0	0
Total	14,799	41,853
Business loans secured by real estate | Franchise real estate secured
Financing Receivable, Allowance for Credit Loss [Line Items]
Total	354,481	347,932
Business loans secured by real estate | Franchise real estate secured | 0% - 5.00%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	95,937	37,262
Fiscal Year before Current Fiscal Year	43,332	79,926
Two Years before Current Fiscal Year	55,621	65,619
Three Years before Current Fiscal Year	39,053	96,672
Four Years before Current Fiscal Year	61,591	19,046
Prior	37,696	22,927
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	333,230	321,452
Business loans secured by real estate | Franchise real estate secured | >5.00% - 10.00%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	812	7,587
Fiscal Year before Current Fiscal Year	0	1,650
Two Years before Current Fiscal Year	4,151	3,274
Three Years before Current Fiscal Year	5,253	327
Four Years before Current Fiscal Year	5,310	5,627
Prior	4,590	4,093
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	20,116	22,558
Business loans secured by real estate | Franchise real estate secured | Greater than 10%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	1,135	442
Fiscal Year before Current Fiscal Year	0	1,512
Two Years before Current Fiscal Year	0	0
Three Years before Current Fiscal Year	0	0
Four Years before Current Fiscal Year	0	1,968
Prior	0	0
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	1,135	3,922
Commercial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	379,494	155,831
Fiscal Year before Current Fiscal Year	116,911	444,000
Two Years before Current Fiscal Year	306,644	266,221
Three Years before Current Fiscal Year	213,528	280,317
Four Years before Current Fiscal Year	203,854	97,412
Prior	123,041	120,099
Revolving	948,281	854,568
Revolving Converted to Term During the Period	2,799	11,140
Total	2,294,552	2,229,588
Commercial loans | Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Total	1,888,870	1,768,834
Commercial loans | Commercial and industrial | 0% - 5.00%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	253,639	70,233
Fiscal Year before Current Fiscal Year	87,252	205,395
Two Years before Current Fiscal Year	196,671	99,178
Three Years before Current Fiscal Year	118,678	193,046
Four Years before Current Fiscal Year	128,879	36,957
Prior	69,707	62,682
Revolving	764,279	394,124
Revolving Converted to Term During the Period	2,055	5,051
Total	1,621,160	1,066,666
Commercial loans | Commercial and industrial | >5.00% - 10.00%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	6,720	49,883
Fiscal Year before Current Fiscal Year	2,293	50,743
Two Years before Current Fiscal Year	8,012	35,813
Three Years before Current Fiscal Year	20,835	13,427
Four Years before Current Fiscal Year	27,760	12,922
Prior	8,438	13,948
Revolving	140,001	322,123
Revolving Converted to Term During the Period	4	2,469
Total	214,063	501,328
Commercial loans | Commercial and industrial | Greater than 10%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	650	7,701
Fiscal Year before Current Fiscal Year	1,759	7,540
Two Years before Current Fiscal Year	741	29,078
Three Years before Current Fiscal Year	2,901	4,485
Four Years before Current Fiscal Year	1,143	4,574
Prior	2,376	8,350
Revolving	43,337	136,253
Revolving Converted to Term During the Period	740	2,859
Total	53,647	200,840
Commercial loans | Franchise non-real estate secured
Financing Receivable, Allowance for Credit Loss [Line Items]
Total	392,950	444,797
Commercial loans | Franchise non-real estate secured | 0% - 5.00%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	108,905	21,409
Fiscal Year before Current Fiscal Year	19,246	145,392
Two Years before Current Fiscal Year	63,233	88,171
Three Years before Current Fiscal Year	59,636	38,010
Four Years before Current Fiscal Year	22,735	21,956
Prior	15,697	23,479
Revolving	0	0
Revolving Converted to Term During the Period	0	502
Total	289,452	338,919
Commercial loans | Franchise non-real estate secured | >5.00% - 10.00%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	9,159	6,198
Fiscal Year before Current Fiscal Year	5,708	15,754
Two Years before Current Fiscal Year	33,550	5,454
Three Years before Current Fiscal Year	5,594	8,164
Four Years before Current Fiscal Year	3,483	18,415
Prior	18,536	3,626
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	76,030	57,611
Commercial loans | Franchise non-real estate secured | Greater than 10%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	269	0
Fiscal Year before Current Fiscal Year	0	16,836
Two Years before Current Fiscal Year	2,237	6,612
Three Years before Current Fiscal Year	4,491	18,655
Four Years before Current Fiscal Year	16,368	1,638
Prior	4,103	3,165
Revolving	0	1,361
Revolving Converted to Term During the Period	0	0
Total	27,468	48,267
Commercial loans | SBA non-real estate secured
Financing Receivable, Allowance for Credit Loss [Line Items]
Total	12,732	15,957
Commercial loans | SBA non-real estate secured | 0% - 5.00%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	152	407
Fiscal Year before Current Fiscal Year	653	2,257
Two Years before Current Fiscal Year	1,215	910
Three Years before Current Fiscal Year	633	1,078
Four Years before Current Fiscal Year	1,008	441
Prior	2,421	2,782
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	6,082	7,875
Commercial loans | SBA non-real estate secured | >5.00% - 10.00%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	0	0
Fiscal Year before Current Fiscal Year	0	0
Two Years before Current Fiscal Year	209	648
Three Years before Current Fiscal Year	305	1,596
Four Years before Current Fiscal Year	2,231	169
Prior	1,137	1,652
Revolving	0	0
Revolving Converted to Term During the Period	0	259
Total	3,882	4,324
Commercial loans | SBA non-real estate secured | Greater than 10%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	0	0
Fiscal Year before Current Fiscal Year	0	83
Two Years before Current Fiscal Year	776	357
Three Years before Current Fiscal Year	455	1,856
Four Years before Current Fiscal Year	247	340
Prior	626	415
Revolving	664	707
Revolving Converted to Term During the Period	0	0
Total	2,768	3,758
Commercial loans | Total commercial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	379,494	155,831
Fiscal Year before Current Fiscal Year	116,911	444,000
Two Years before Current Fiscal Year	306,644	266,221
Three Years before Current Fiscal Year	213,528	280,317
Four Years before Current Fiscal Year	203,854	97,412
Prior	123,041	120,099
Revolving	948,281	854,568
Revolving Converted to Term During the Period	2,799	11,140
Total	$ 2,294,552	$ 2,229,588

Allowance for Credit Losses -_2

Allowance for Credit Losses - Amortized Cost of Loans by Estimated LTV and FICO Bands (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	$ 3,483,154	$ 1,862,085
Fiscal Year before Current Fiscal Year	1,875,610	3,354,750
Two Years before Current Fiscal Year	2,573,205	2,140,513
Three Years before Current Fiscal Year	1,527,156	1,729,763
Four Years before Current Fiscal Year	1,244,757	1,072,603
Prior	2,286,095	2,152,690
Revolving	989,785	912,643
Revolving Converted to Term During the Period	3,099	11,386
Total	13,982,861	13,236,433
Investor loans secured by real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	2,346,289	1,351,350
Fiscal Year before Current Fiscal Year	1,406,768	2,386,517
Two Years before Current Fiscal Year	1,874,113	1,437,278
Three Years before Current Fiscal Year	1,026,187	988,649
Four Years before Current Fiscal Year	741,908	674,159
Prior	1,465,337	1,374,935
Revolving	10,390	12,877
Revolving Converted to Term During the Period	0	0
Total	8,870,992	8,225,765
Investor loans secured by real estate | CRE non-owner-occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total	2,823,065	2,675,085
Investor loans secured by real estate | CRE non-owner-occupied | 55% and below
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	291,909	138,007
Fiscal Year before Current Fiscal Year	142,444	229,272
Two Years before Current Fiscal Year	188,747	182,385
Three Years before Current Fiscal Year	208,825	136,355
Four Years before Current Fiscal Year	127,768	189,848
Prior	589,484	588,230
Revolving	9,599	11,114
Revolving Converted to Term During the Period	0	0
Total	1,558,776	1,475,211
Investor loans secured by real estate | CRE non-owner-occupied | >55-65%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	220,116	101,434
Fiscal Year before Current Fiscal Year	89,488	217,210
Two Years before Current Fiscal Year	193,461	92,015
Three Years before Current Fiscal Year	104,301	130,024
Four Years before Current Fiscal Year	79,960	78,470
Prior	204,683	204,161
Revolving	525	559
Revolving Converted to Term During the Period	0	0
Total	892,534	823,873
Investor loans secured by real estate | CRE non-owner-occupied | >65-75%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	53,580	26,460
Fiscal Year before Current Fiscal Year	36,801	102,494
Two Years before Current Fiscal Year	64,165	169,878
Three Years before Current Fiscal Year	146,402	18,876
Four Years before Current Fiscal Year	8,118	13,952
Prior	32,513	29,506
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	341,579	361,166
Investor loans secured by real estate | CRE non-owner-occupied | Greater than 75%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	0	0
Fiscal Year before Current Fiscal Year	0	2,750
Two Years before Current Fiscal Year	20,062	4,787
Three Years before Current Fiscal Year	4,810	2,762
Four Years before Current Fiscal Year	3,826	0
Prior	1,478	4,536
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	30,176	14,835
Investor loans secured by real estate | Multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Total	5,705,666	5,171,356
Investor loans secured by real estate | Multifamily | 55% and below
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	260,469	218,833
Fiscal Year before Current Fiscal Year	219,510	345,519
Two Years before Current Fiscal Year	314,269	294,464
Three Years before Current Fiscal Year	211,795	233,997
Four Years before Current Fiscal Year	207,913	84,530
Prior	299,265	269,906
Revolving	218	0
Revolving Converted to Term During the Period	0	0
Total	1,513,439	1,447,249
Investor loans secured by real estate | Multifamily | >55-65%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	719,640	381,737
Fiscal Year before Current Fiscal Year	421,994	731,408
Two Years before Current Fiscal Year	580,084	381,282
Three Years before Current Fiscal Year	229,609	215,170
Four Years before Current Fiscal Year	158,927	152,066
Prior	226,977	189,151
Revolving	0	420
Revolving Converted to Term During the Period	0	0
Total	2,337,231	2,051,234
Investor loans secured by real estate | Multifamily | >65-75%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	703,894	427,074
Fiscal Year before Current Fiscal Year	367,815	583,078
Two Years before Current Fiscal Year	442,661	215,389
Three Years before Current Fiscal Year	85,883	215,452
Four Years before Current Fiscal Year	133,716	127,684
Prior	85,918	66,457
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	1,819,887	1,635,134
Investor loans secured by real estate | Multifamily | Greater than 75%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	10,444	0
Fiscal Year before Current Fiscal Year	3,027	19,469
Two Years before Current Fiscal Year	11,549	10,618
Three Years before Current Fiscal Year	0	1,879
Four Years before Current Fiscal Year	1,849	0
Prior	8,240	5,773
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	35,109	37,739
Investor loans secured by real estate | Construction and land
Financing Receivable, Allowance for Credit Loss [Line Items]
Total	292,815	321,993
Investor loans secured by real estate | Construction and land | 55% and below
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	82,458	57,309
Fiscal Year before Current Fiscal Year	120,912	105,308
Two Years before Current Fiscal Year	42,774	36,068
Three Years before Current Fiscal Year	4,183	18,625
Four Years before Current Fiscal Year	3,996	20,531
Prior	3,607	6,672
Revolving	48	784
Revolving Converted to Term During the Period	0	0
Total	257,978	245,297
Investor loans secured by real estate | Construction and land | >55-65%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	0	0
Fiscal Year before Current Fiscal Year	4,278	36,113
Two Years before Current Fiscal Year	6,630	23,770
Three Years before Current Fiscal Year	17,951	0
Four Years before Current Fiscal Year	0	0
Prior	0	0
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	28,859	59,883
Investor loans secured by real estate | Construction and land | >65-75%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	3,649	0
Fiscal Year before Current Fiscal Year	0	3,338
Two Years before Current Fiscal Year	2,329	13,475
Three Years before Current Fiscal Year	0	0
Four Years before Current Fiscal Year	0	0
Prior	0	0
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	5,978	16,813
Investor loans secured by real estate | Construction and land | Greater than 75%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	0	0
Fiscal Year before Current Fiscal Year	0	0
Two Years before Current Fiscal Year	0	0
Three Years before Current Fiscal Year	0	0
Four Years before Current Fiscal Year	0	0
Prior	0	0
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	0	0
Investor loans secured by real estate | SBA secured by real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total	49,446	57,331
Investor loans secured by real estate | SBA secured by real estate | 55% and below
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	0	0
Fiscal Year before Current Fiscal Year	0	2,066
Two Years before Current Fiscal Year	9	649
Three Years before Current Fiscal Year	637	673
Four Years before Current Fiscal Year	695	317
Prior	2,177	778
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	3,518	4,483
Investor loans secured by real estate | SBA secured by real estate | >55-65%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	0	0
Fiscal Year before Current Fiscal Year	0	2,427
Two Years before Current Fiscal Year	2,407	1,639
Three Years before Current Fiscal Year	1,958	4,008
Four Years before Current Fiscal Year	1,910	879
Prior	2,853	4,354
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	9,128	13,307
Investor loans secured by real estate | SBA secured by real estate | >65-75%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	130	0
Fiscal Year before Current Fiscal Year	0	3,897
Two Years before Current Fiscal Year	3,870	3,882
Three Years before Current Fiscal Year	4,606	3,482
Four Years before Current Fiscal Year	4,461	4,519
Prior	5,544	1,884
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	18,611	17,664
Investor loans secured by real estate | SBA secured by real estate | Greater than 75%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	0	496
Fiscal Year before Current Fiscal Year	499	2,168
Two Years before Current Fiscal Year	1,096	6,977
Three Years before Current Fiscal Year	5,227	7,346
Four Years before Current Fiscal Year	8,769	1,363
Prior	2,598	3,527
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	18,189	21,877
Business loans secured by real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	737,142	344,058
Fiscal Year before Current Fiscal Year	348,383	516,400
Two Years before Current Fiscal Year	390,418	422,995
Three Years before Current Fiscal Year	285,786	446,733
Four Years before Current Fiscal Year	292,026	267,062
Prior	607,955	529,565
Revolving	4,572	14,518
Revolving Converted to Term During the Period	300	246
Total	2,666,582	2,541,577
Business loans secured by real estate | SBA secured by real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total	69,937	79,595
Business loans secured by real estate | SBA secured by real estate | 55% and below
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	2,547	1,825
Fiscal Year before Current Fiscal Year	591	1,626
Two Years before Current Fiscal Year	1,897	5,332
Three Years before Current Fiscal Year	1,127	5,495
Four Years before Current Fiscal Year	5,146	3,615
Prior	14,667	13,582
Revolving	1,361	0
Revolving Converted to Term During the Period	0	0
Total	27,336	31,475
Business loans secured by real estate | SBA secured by real estate | >55-65%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	186	246
Fiscal Year before Current Fiscal Year	556	513
Two Years before Current Fiscal Year	199	1,795
Three Years before Current Fiscal Year	1,513	1,094
Four Years before Current Fiscal Year	1,306	3,586
Prior	7,513	5,448
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	11,273	12,682
Business loans secured by real estate | SBA secured by real estate | >65-75%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	703	264
Fiscal Year before Current Fiscal Year	328	3,142
Two Years before Current Fiscal Year	3,111	1,515
Three Years before Current Fiscal Year	5,254	3,968
Four Years before Current Fiscal Year	4,104	1,586
Prior	3,586	4,043
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	17,086	14,518
Business loans secured by real estate | SBA secured by real estate | Greater than 75%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	353	918
Fiscal Year before Current Fiscal Year	893	2,356
Two Years before Current Fiscal Year	2,326	5,350
Three Years before Current Fiscal Year	3,930	7,488
Four Years before Current Fiscal Year	3,674	1,214
Prior	3,066	3,594
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	14,242	20,920
Business loans secured by real estate | CRE owner-occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total	2,242,164	2,114,050
Business loans secured by real estate | CRE owner-occupied | 55% and below
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	296,313	96,803
Fiscal Year before Current Fiscal Year	108,338	160,605
Two Years before Current Fiscal Year	123,527	157,868
Three Years before Current Fiscal Year	100,865	179,791
Four Years before Current Fiscal Year	139,455	131,795
Prior	383,599	328,188
Revolving	3,211	14,518
Revolving Converted to Term During the Period	300	246
Total	1,155,608	1,069,814
Business loans secured by real estate | CRE owner-occupied | >55-65%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	161,368	72,044
Fiscal Year before Current Fiscal Year	73,789	91,028
Two Years before Current Fiscal Year	66,407	98,176
Three Years before Current Fiscal Year	70,311	94,712
Four Years before Current Fiscal Year	46,314	65,120
Prior	99,171	90,548
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	517,360	511,628
Business loans secured by real estate | CRE owner-occupied | >65-75%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	126,160	71,692
Fiscal Year before Current Fiscal Year	87,909	152,920
Two Years before Current Fiscal Year	123,495	79,106
Three Years before Current Fiscal Year	52,679	43,832
Four Years before Current Fiscal Year	16,909	31,303
Prior	37,740	31,493
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	444,892	410,346
Business loans secured by real estate | CRE owner-occupied | Greater than 75%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	51,628	54,975
Fiscal Year before Current Fiscal Year	32,647	21,122
Two Years before Current Fiscal Year	9,684	4,960
Three Years before Current Fiscal Year	5,801	13,354
Four Years before Current Fiscal Year	8,217	2,202
Prior	16,327	25,649
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	124,304	122,262
Business loans secured by real estate | Franchise real estate secured
Financing Receivable, Allowance for Credit Loss [Line Items]
Total	354,481	347,932
Business loans secured by real estate | Franchise real estate secured | 55% and below
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	17,039	20,801
Fiscal Year before Current Fiscal Year	23,695	10,470
Two Years before Current Fiscal Year	9,052	13,864
Three Years before Current Fiscal Year	12,776	20,956
Four Years before Current Fiscal Year	14,889	9,189
Prior	19,988	16,213
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	97,439	91,493
Business loans secured by real estate | Franchise real estate secured | >55-65%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	39,872	2,689
Fiscal Year before Current Fiscal Year	2,622	9,955
Two Years before Current Fiscal Year	11,055	16,001
Three Years before Current Fiscal Year	10,137	19,102
Four Years before Current Fiscal Year	4,804	6,855
Prior	10,129	2,333
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	78,619	56,935
Business loans secured by real estate | Franchise real estate secured | >65-75%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	23,262	19,349
Fiscal Year before Current Fiscal Year	15,150	51,719
Two Years before Current Fiscal Year	36,521	23,258
Three Years before Current Fiscal Year	8,632	9,153
Four Years before Current Fiscal Year	15,563	10,597
Prior	10,951	7,236
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	110,079	121,312
Business loans secured by real estate | Franchise real estate secured | Greater than 75%
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	17,711	2,452
Fiscal Year before Current Fiscal Year	1,865	10,944
Two Years before Current Fiscal Year	3,144	15,770
Three Years before Current Fiscal Year	12,761	47,788
Four Years before Current Fiscal Year	31,645	0
Prior	1,218	1,238
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	68,344	78,192
Retail loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	20,229	10,846
Fiscal Year before Current Fiscal Year	3,548	7,833
Two Years before Current Fiscal Year	2,030	14,019
Three Years before Current Fiscal Year	1,655	14,064
Four Years before Current Fiscal Year	6,969	33,970
Prior	89,762	128,091
Revolving	26,542	30,680
Revolving Converted to Term During the Period	0	0
Total	150,735	239,503
Retail loans | Single family residential
Financing Receivable, Allowance for Credit Loss [Line Items]
Total	144,309	232,574
Retail loans | Single family residential | Greater than 740
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	20,201	10,794
Fiscal Year before Current Fiscal Year	3,518	6,531
Two Years before Current Fiscal Year	1,967	12,679
Three Years before Current Fiscal Year	1,599	8,846
Four Years before Current Fiscal Year	3,319	28,222
Prior	53,609	81,838
Revolving	17,213	19,588
Revolving Converted to Term During the Period	0	0
Total	101,426	168,498
Retail loans | Single family residential | >680 - 740
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	0	0
Fiscal Year before Current Fiscal Year	0	1,183
Two Years before Current Fiscal Year	0	1,303
Three Years before Current Fiscal Year	34	4,732
Four Years before Current Fiscal Year	3,172	2,614
Prior	9,756	15,624
Revolving	5,271	6,685
Revolving Converted to Term During the Period	0	0
Total	18,233	32,141
Retail loans | Single family residential | >580 - 680
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	0	0
Fiscal Year before Current Fiscal Year	0	0
Two Years before Current Fiscal Year	0	0
Three Years before Current Fiscal Year	0	461
Four Years before Current Fiscal Year	453	3,132
Prior	9,301	7,473
Revolving	757	864
Revolving Converted to Term During the Period	0	0
Total	10,511	11,930
Retail loans | Single family residential | Less than 580
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	0	0
Fiscal Year before Current Fiscal Year	0	0
Two Years before Current Fiscal Year	0	0
Three Years before Current Fiscal Year	0	0
Four Years before Current Fiscal Year	10	0
Prior	14,096	19,970
Revolving	33	35
Revolving Converted to Term During the Period	0	0
Total	14,139	20,005
Retail loans | Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Total	6,426	6,929
Retail loans | Consumer | Greater than 740
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	27	52
Fiscal Year before Current Fiscal Year	30	69
Two Years before Current Fiscal Year	37	31
Three Years before Current Fiscal Year	22	22
Four Years before Current Fiscal Year	12	1
Prior	2,500	2,609
Revolving	1,325	2,198
Revolving Converted to Term During the Period	0	0
Total	3,953	4,982
Retail loans | Consumer | >680 - 740
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	1	0
Fiscal Year before Current Fiscal Year	0	35
Two Years before Current Fiscal Year	19	6
Three Years before Current Fiscal Year	0	3
Four Years before Current Fiscal Year	3	0
Prior	441	469
Revolving	1,876	1,227
Revolving Converted to Term During the Period	0	0
Total	2,340	1,740
Retail loans | Consumer | >580 - 680
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	0	0
Fiscal Year before Current Fiscal Year	0	15
Two Years before Current Fiscal Year	7	0
Three Years before Current Fiscal Year	0	0
Four Years before Current Fiscal Year	0	1
Prior	59	95
Revolving	49	56
Revolving Converted to Term During the Period	0	0
Total	115	167
Retail loans | Consumer | Less than 580
Financing Receivable, Allowance for Credit Loss [Line Items]
Current Fiscal Year	0	0
Fiscal Year before Current Fiscal Year	0	0
Two Years before Current Fiscal Year	0	0
Three Years before Current Fiscal Year	0	0
Four Years before Current Fiscal Year	0	0
Prior	0	13
Revolving	18	27
Revolving Converted to Term During the Period	0	0
Total	$ 18	$ 40

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	9 Months Ended		15 Months Ended
	Sep. 30, 2020	Jun. 30, 2021	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Dec. 31, 2020	Jun. 01, 2020	Dec. 31, 2019
Goodwill [Line Items]
Goodwill	$ 898,434		$ 901,312	$ 898,434	$ 901,312	$ 898,569		$ 808,322
Purchase accounting adjustments to goodwill			2,743	(2,732)
Goodwill acquired during the year			0	92,844
Net intangible assets	90,012	$ 77,363	$ 73,451	90,012	73,451	85,500
Remainder of fiscal year						15,900
2022						14,000
2023						12,300
2024						11,100
2025						10,000
Minimum
Goodwill [Line Items]
Weighted average useful life			6 years
Maximum
Goodwill [Line Items]
Weighted average useful life			11 years
Core Deposits
Goodwill [Line Items]
Net intangible assets			$ 70,700		70,700	82,500
Customer Relationships
Goodwill [Line Items]
Net intangible assets			$ 2,800		2,800	$ 3,000
Opus Bank
Goodwill [Line Items]
Goodwill							$ 92,990
Purchase accounting adjustments to goodwill	$ (2,700)	$ 2,700			$ 146
Goodwill acquired during the year				$ 92,800

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets - Goodwill Roll Forward (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Goodwill [Roll Forward]
Balance, beginning of year	$ 898,569	$ 808,322
Goodwill acquired during the year	0	92,844
Purchase accounting adjustments	2,743	(2,732)
Balance, end of year	901,312	898,434
Accumulated impairment losses at end of year	$ 0	$ 0

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets - Finite-Lived Intangible Assets Roll Forward (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Gross Balance of CDI:
Balance, beginning of year	$ 145,212		$ 145,212	$ 145,212	$ 125,945
Additions due to acquisitions	0	$ 0	0	0	19,267
Balance, end of year	145,212	145,212	145,212	145,212	145,212
Accumulated amortization:
Balance, beginning of year	(67,849)	(63,848)	(50,662)	(59,705)	(42,633)
Amortization	(3,912)	(4,001)	(4,538)	(12,056)	(12,567)
Balance, end of year	(71,761)	(67,849)	(55,200)	(71,761)	(55,200)
Net intangible assets	$ 73,451	$ 77,363	$ 90,012	$ 73,451	$ 90,012	$ 85,500

Subordinated Debentures - Narra

Subordinated Debentures - Narrative (Details)	Jul. 07, 2021USD ($)	Apr. 15, 2021USD ($)	Sep. 30, 2021USD ($)note	Jun. 30, 2021USD ($)	Sep. 30, 2021USD ($)note	Sep. 30, 2020USD ($)	Jul. 31, 2021USD ($)	Jul. 01, 2021USD ($)	Dec. 31, 2020USD ($)note
Debt Instrument [Line Items]
Face amount of debt instrument			$ 335,000,000		$ 335,000,000
Gain loss on early debt extinguishment					180,000	$ 0
Subordinated debentures			330,408,000		330,408,000				$ 501,511,000
Subordinated notes
Debt Instrument [Line Items]
Face amount of debt instrument		$ 25,000,000	$ 335,000,000	$ 25,000,000	$ 335,000,000
Fixed interest rate (as a percent)		7.125%
Redemption price (as a percent)		103.00%
Redemption amount		$ 25,800,000
Gain loss on early debt extinguishment		647,000
Purchase accounting adjustments		$ 103,000
Number of notes/securities | note			3		3				5
Subordinated debentures			$ 330,408,000		$ 330,408,000				$ 493,410,000
Weighted interest rate (as a percent)			5.33%		5.33%				5.38%
Reduction in Tier 2 capital			$ (146,000,000)	$ (20,000,000)
Redeemed amount of debt instrument			145,400,000		$ 145,400,000
Subordinated notes | Opus Bank
Debt Instrument [Line Items]
Face amount of debt instrument								$ 135,000,000
Fixed interest rate (as a percent)								5.50%
Subordinated debt
Debt Instrument [Line Items]
Face amount of debt instrument			0		0
Number of notes/securities | note									2
Subordinated debentures			$ 0		$ 0				$ 8,101,000
Subordinated debt | Heritage Oaks Capital Trust II
Debt Instrument [Line Items]
Face amount of debt instrument								$ 5,200,000
Fixed interest rate (as a percent)								1.92%
Redeemed amount of debt instrument							$ 5,200,000
Subordinated debt | Santa Lucia Bancorp (CA) Capital Trust
Debt Instrument [Line Items]
Face amount of debt instrument	$ 5,200,000
Fixed interest rate (as a percent)	1.66%
Redeemed amount of debt instrument							$ 5,200,000
Subordinated and Junior Subordinated Debt
Debt Instrument [Line Items]
Redemption amount	$ 149,200,000
Gain loss on early debt extinguishment	$ (970,000)

Subordinated Debentures - Summa

Subordinated Debentures - Summary (Details) - USD ($)	9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Apr. 15, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Face amount of debt instrument	$ 335,000,000
Carrying Value	330,408,000			$ 501,511,000
Subordinated notes
Debt Instrument [Line Items]
Fixed interest rate (as a percent)			7.125%
Face amount of debt instrument	335,000,000	$ 25,000,000	$ 25,000,000
Carrying Value	$ 330,408,000			493,410,000
Subordinated notes | Subordinated notes due 2024, 5.75% per annum
Debt Instrument [Line Items]
Fixed interest rate (as a percent)	5.75%
Current Interest Rate (as a percent)	5.75%
Face amount of debt instrument	$ 60,000,000
Carrying Value	$ 59,641,000			59,552,000
Subordinated notes | Subordinated notes due 2029, 4.875% per annum until May 15, 2024, 3-month LIBOR +2.5% thereafter
Debt Instrument [Line Items]
Fixed interest rate (as a percent)	4.875%
Current Interest Rate (as a percent)	4.875%
Face amount of debt instrument	$ 125,000,000
Carrying Value	$ 123,068,000			122,877,000
Subordinated notes | Subordinated notes due 2029, 4.875% per annum until May 15, 2024, 3-month LIBOR +2.5% thereafter | LIBOR
Debt Instrument [Line Items]
Variable rate (as a percent)	2.50%
Subordinated notes | Subordinated notes due 2030, 5.375% per annum until June 15, 2025, 3-month SOFR +5.170% thereafter
Debt Instrument [Line Items]
Fixed interest rate (as a percent)	5.375%
Current Interest Rate (as a percent)	5.375%
Face amount of debt instrument	$ 150,000,000
Carrying Value	$ 147,699,000			147,501,000
Subordinated notes | Subordinated notes due 2030, 5.375% per annum until June 15, 2025, 3-month SOFR +5.170% thereafter | SOFR
Debt Instrument [Line Items]
Variable rate (as a percent)	5.17%
Subordinated notes | Subordinated notes due 2025, 7.125% per annum
Debt Instrument [Line Items]
Fixed interest rate (as a percent)	7.125%
Current Interest Rate (as a percent)	0.00%
Face amount of debt instrument	$ 0
Carrying Value	$ 0			25,109,000
Subordinated notes | Subordinated notes due 2026, 5.50% per annum until June 30 2021, 3-month LIBOR +4.285% thereafter
Debt Instrument [Line Items]
Fixed interest rate (as a percent)	5.50%
Current Interest Rate (as a percent)	0.00%
Face amount of debt instrument	$ 0
Carrying Value	$ 0			138,371,000
Subordinated notes | Subordinated notes due 2026, 5.50% per annum until June 30 2021, 3-month LIBOR +4.285% thereafter | LIBOR
Debt Instrument [Line Items]
Variable rate (as a percent)	4.285%
Subordinated debt
Debt Instrument [Line Items]
Face amount of debt instrument	$ 0
Carrying Value	$ 0			8,101,000
Subordinated debt | Heritage Oaks Bancorp
Debt Instrument [Line Items]
Current Interest Rate (as a percent)	0.00%
Face amount of debt instrument	$ 0
Carrying Value	$ 0			4,121,000
Subordinated debt | Heritage Oaks Bancorp | LIBOR
Debt Instrument [Line Items]
Variable rate (as a percent)	1.72%
Subordinated debt | Santa Lucia Bancorp (CA) Capital Trust
Debt Instrument [Line Items]
Current Interest Rate (as a percent)	0.00%
Face amount of debt instrument	$ 0
Carrying Value	$ 0			$ 3,980,000
Subordinated debt | Santa Lucia Bancorp (CA) Capital Trust | LIBOR
Debt Instrument [Line Items]
Variable rate (as a percent)	1.48%

Earnings per Share (Details)

Earnings per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Basic
Net income (loss)	$ 90,088	$ 96,302	$ 66,566	$ 255,058	$ (6,785)
Less: dividends and undistributed earnings allocated to participating securities	(937)	(1,034)	(612)	(2,641)	(564)
Net income allocated to common stockholders	$ 89,151	$ 95,268	$ 65,954	$ 252,417	$ (7,349)
Weighted average common shares outstanding (in shares)	93,549,639	93,635,392	93,529,967	93,571,468	74,391,688
Basic earnings per common share (in dollars per share)	$ 0.95	$ 1.02	$ 0.71	$ 2.70	$ (0.10)
Diluted
Net income allocated to common stockholders	$ 89,151	$ 95,268	$ 65,954	$ 252,417	$ (7,349)
Weighted average common shares outstanding (in shares)	93,549,639	93,635,392	93,529,967	93,571,468	74,391,688
Diluted effect of share-based compensation (in shares)	511,085	582,636	189,200	518,939	0
Weighted average diluted common shares (in shares)	94,060,724	94,218,028	93,719,167	94,090,407	74,391,688
Diluted earnings per common share (in dollars per share)	$ 0.95	$ 1.01	$ 0.70	$ 2.68	$ (0.10)
Weighted-average shares of anti-dilutive RSUs excluded from diluted EPS computation	0	0	27,815	0	173,235

Fair Value of Financial Instr_3

Fair Value of Financial Instruments - Hierarchy Table on Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Financial assets
Investment securities available-for-sale, at fair value	$ 4,709,815	$ 3,931,115
Derivative assets	8,642
Financial liabilities
Derivative liabilities	5,819
U.S. Treasury
Financial assets
Investment securities available-for-sale, at fair value	79,342	32,533
Agency
Financial assets
Investment securities available-for-sale, at fair value	530,093	690,386
Corporate
Financial assets
Investment securities available-for-sale, at fair value	386,391	415,308
Municipal bonds
Financial assets
Investment securities available-for-sale, at fair value	1,255,866	1,446,019
Collateralized mortgage obligations
Financial assets
Investment securities available-for-sale, at fair value	662,231	513,366
Mortgage-backed securities
Financial assets
Investment securities available-for-sale, at fair value	1,795,892	833,503
Level 1
Financial assets
Investment securities available-for-sale, at fair value	0	0
Derivative assets	0	0
Financial liabilities
Derivative liabilities	0	0
Level 2
Financial assets
Investment securities available-for-sale, at fair value	4,709,815	3,931,115
Derivative assets	6,747	12,053
Financial liabilities
Derivative liabilities	5,819	12,066
Level 3
Financial assets
Investment securities available-for-sale, at fair value	0	0
Derivative assets	1,895	1,914
Financial liabilities
Derivative liabilities	0	0
Recurring
Financial assets
Investment securities available-for-sale, at fair value	4,709,815	3,931,115
Derivative assets	8,642	13,967
Financial liabilities
Derivative liabilities	5,819	12,066
Recurring | Interest rate swaps contracts
Financial assets
Derivative assets	6,747	12,053
Recurring | Equity warrants
Financial assets
Derivative assets	1,895	1,914
Recurring | U.S. Treasury
Financial assets
Investment securities available-for-sale, at fair value	79,342	32,533
Recurring | Agency
Financial assets
Investment securities available-for-sale, at fair value	530,093	690,386
Recurring | Corporate
Financial assets
Investment securities available-for-sale, at fair value	386,391	415,308
Recurring | Municipal bonds
Financial assets
Investment securities available-for-sale, at fair value	1,255,866	1,446,019
Recurring | Collateralized mortgage obligations
Financial assets
Investment securities available-for-sale, at fair value	662,231	513,366
Recurring | Mortgage-backed securities
Financial assets
Investment securities available-for-sale, at fair value	1,795,892	833,503
Recurring | Level 1
Financial assets
Investment securities available-for-sale, at fair value	0	0
Derivative assets	0	0
Financial liabilities
Derivative liabilities	0	0
Recurring | Level 1 | Interest rate swaps contracts
Financial assets
Derivative assets	0	0
Recurring | Level 1 | Equity warrants
Financial assets
Derivative assets	0	0
Recurring | Level 1 | U.S. Treasury
Financial assets
Investment securities available-for-sale, at fair value	0	0
Recurring | Level 1 | Agency
Financial assets
Investment securities available-for-sale, at fair value	0	0
Recurring | Level 1 | Corporate
Financial assets
Investment securities available-for-sale, at fair value	0	0
Recurring | Level 1 | Municipal bonds
Financial assets
Investment securities available-for-sale, at fair value	0	0
Recurring | Level 1 | Collateralized mortgage obligations
Financial assets
Investment securities available-for-sale, at fair value	0	0
Recurring | Level 1 | Mortgage-backed securities
Financial assets
Investment securities available-for-sale, at fair value	0	0
Recurring | Level 2
Financial assets
Investment securities available-for-sale, at fair value	4,709,815	3,931,115
Derivative assets	6,747	12,053
Financial liabilities
Derivative liabilities	5,819	12,066
Recurring | Level 2 | Interest rate swaps contracts
Financial assets
Derivative assets	6,747	12,053
Recurring | Level 2 | Equity warrants
Financial assets
Derivative assets	0	0
Recurring | Level 2 | U.S. Treasury
Financial assets
Investment securities available-for-sale, at fair value	79,342	32,533
Recurring | Level 2 | Agency
Financial assets
Investment securities available-for-sale, at fair value	530,093	690,386
Recurring | Level 2 | Corporate
Financial assets
Investment securities available-for-sale, at fair value	386,391	415,308
Recurring | Level 2 | Municipal bonds
Financial assets
Investment securities available-for-sale, at fair value	1,255,866	1,446,019
Recurring | Level 2 | Collateralized mortgage obligations
Financial assets
Investment securities available-for-sale, at fair value	662,231	513,366
Recurring | Level 2 | Mortgage-backed securities
Financial assets
Investment securities available-for-sale, at fair value	1,795,892	833,503
Recurring | Level 3
Financial assets
Investment securities available-for-sale, at fair value	0	0
Derivative assets	1,895	1,914
Financial liabilities
Derivative liabilities	0	0
Recurring | Level 3 | Interest rate swaps contracts
Financial assets
Derivative assets	0	0
Recurring | Level 3 | Equity warrants
Financial assets
Derivative assets	1,895	1,914
Recurring | Level 3 | U.S. Treasury
Financial assets
Investment securities available-for-sale, at fair value	0	0
Recurring | Level 3 | Agency
Financial assets
Investment securities available-for-sale, at fair value	0	0
Recurring | Level 3 | Corporate
Financial assets
Investment securities available-for-sale, at fair value	0	0
Recurring | Level 3 | Municipal bonds
Financial assets
Investment securities available-for-sale, at fair value	0	0
Recurring | Level 3 | Collateralized mortgage obligations
Financial assets
Investment securities available-for-sale, at fair value	0	0
Recurring | Level 3 | Mortgage-backed securities
Financial assets
Investment securities available-for-sale, at fair value	$ 0	$ 0

Fair Value of Financial Instr_4

Fair Value of Financial Instruments - Reconciliation of Fair Value of Equity Warrants (Details) - Equity warrants - Level 3 - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 1,903	$ 1,952	$ 1,914	$ 5,162
Change in fair value	(8)	(32)	(19)	(35)
Sales	0	0	0	(3,207)
Ending balance	$ 1,895	$ 1,920	$ 1,895	$ 1,920

Fair Value of Financial Instr_5

Fair Value of Financial Instruments - Quantitative Information for Level 3 Fair Value Measurements (Details) $ in Thousands	Sep. 30, 2021USD ($)	Dec. 31, 2020USD ($)
Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans receivable, fair value	$ 14,121,193	$ 13,351,092
Recurring | Level 3 | Black-Scholes option pricing model
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity warrants	$ 1,895	$ 1,914
Recurring | Level 3 | Black-Scholes option pricing model | Volatility | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity warrants, input	0.3000	0.3000
Recurring | Level 3 | Black-Scholes option pricing model | Volatility | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity warrants, input	0.3500	0.3500
Recurring | Level 3 | Black-Scholes option pricing model | Volatility | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity warrants, input	0.3115	0.3119
Recurring | Level 3 | Black-Scholes option pricing model | Risk free interest rate | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity warrants, input	0.0019	0.0013
Recurring | Level 3 | Black-Scholes option pricing model | Risk free interest rate | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity warrants, input	0.0076	0.0036
Recurring | Level 3 | Black-Scholes option pricing model | Risk free interest rate | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity warrants, input	0.0032	0.0018
Recurring | Level 3 | Black-Scholes option pricing model | Marketability Discount | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity warrants, input	0.0550	0.0600
Recurring | Level 3 | Black-Scholes option pricing model | Marketability Discount | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity warrants, input	0.1600	0.1600
Recurring | Level 3 | Black-Scholes option pricing model | Marketability Discount | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity warrants, input	0.1359	0.1351
Nonrecurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans receivable, fair value	$ 9,348	$ 4,077
Nonrecurring | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans receivable, fair value	9,348	4,077
Nonrecurring | Level 3 | Fair value of collateral | Investor loans secured by real estate | CRE non-owner-occupied
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans receivable, fair value	$ 7,045	$ 198
Nonrecurring | Level 3 | Fair value of collateral | Investor loans secured by real estate | CRE non-owner-occupied | Collateral discount and cost to sell | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans receivable, input	0.0700	0.1000
Nonrecurring | Level 3 | Fair value of collateral | Investor loans secured by real estate | CRE non-owner-occupied | Collateral discount and cost to sell | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans receivable, input	0.0700	0.1000
Nonrecurring | Level 3 | Fair value of collateral | Investor loans secured by real estate | CRE non-owner-occupied | Collateral discount and cost to sell | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans receivable, input	0.0700	0.1000
Nonrecurring | Level 3 | Fair value of collateral | Investor loans secured by real estate | SBA secured by real estate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans receivable, fair value	$ 976	$ 746
Nonrecurring | Level 3 | Fair value of collateral | Investor loans secured by real estate | SBA secured by real estate | Collateral discount and cost to sell | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans receivable, input	0.1000	0.1000
Nonrecurring | Level 3 | Fair value of collateral | Investor loans secured by real estate | SBA secured by real estate | Collateral discount and cost to sell | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans receivable, input	0.1000	0.1000
Nonrecurring | Level 3 | Fair value of collateral | Investor loans secured by real estate | SBA secured by real estate | Collateral discount and cost to sell | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans receivable, input	0.1000	0.1000
Nonrecurring | Level 3 | Fair value of collateral | Business loans secured by real estate | SBA secured by real estate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans receivable, fair value		$ 386
Nonrecurring | Level 3 | Fair value of collateral | Business loans secured by real estate | SBA secured by real estate | Collateral discount and cost to sell | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans receivable, input		0.0700
Nonrecurring | Level 3 | Fair value of collateral | Business loans secured by real estate | SBA secured by real estate | Collateral discount and cost to sell | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans receivable, input		0.1000
Nonrecurring | Level 3 | Fair value of collateral | Business loans secured by real estate | SBA secured by real estate | Collateral discount and cost to sell | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans receivable, input		0.0909
Nonrecurring | Level 3 | Fair value of collateral | Commercial loans | Commercial and industrial
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans receivable, fair value	$ 240	$ 2,040
Nonrecurring | Level 3 | Fair value of collateral | Commercial loans | Commercial and industrial | Collateral discount and cost to sell | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans receivable, input	0.2000	0.0700
Nonrecurring | Level 3 | Fair value of collateral | Commercial loans | Commercial and industrial | Collateral discount and cost to sell | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans receivable, input	0.2000	0.1000
Nonrecurring | Level 3 | Fair value of collateral | Commercial loans | Commercial and industrial | Collateral discount and cost to sell | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans receivable, input	0.2000	0.0906
Nonrecurring | Level 3 | Fair value of collateral | Commercial loans | SBA non-real estate secured
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans receivable, fair value		$ 707
Nonrecurring | Level 3 | Fair value of collateral | Commercial loans | SBA non-real estate secured | Collateral discount and cost to sell | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans receivable, input		0.0700
Nonrecurring | Level 3 | Fair value of collateral | Commercial loans | SBA non-real estate secured | Collateral discount and cost to sell | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans receivable, input		0.0700
Nonrecurring | Level 3 | Fair value of collateral | Commercial loans | SBA non-real estate secured | Collateral discount and cost to sell | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans receivable, input		0.0700
Nonrecurring | Level 3 | Fair value of collateral | Commercial loans | Franchise non-real estate secured
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans receivable, fair value	$ 1,087
Nonrecurring | Level 3 | Fair value of collateral | Commercial loans | Franchise non-real estate secured | Collateral discount and cost to sell | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans receivable, input	0
Nonrecurring | Level 3 | Fair value of collateral | Commercial loans | Franchise non-real estate secured | Collateral discount and cost to sell | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans receivable, input	1
Nonrecurring | Level 3 | Fair value of collateral | Commercial loans | Franchise non-real estate secured | Collateral discount and cost to sell | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans receivable, input	0.1032

Fair Value of Financial Instr_6

Fair Value of Financial Instruments - Narrative (Details) - Discount Rate	Sep. 30, 2021
Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other real estate owned, input	0.07
Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other real estate owned, input	0.10

Fair Value of Financial Instr_7

Fair Value of Financial Instruments - Hierarchy Table on Nonrecurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Level 1
Fair Value Disclosures
Collateral dependent loans/Impaired loans	$ 0	$ 0
Level 2
Fair Value Disclosures
Collateral dependent loans/Impaired loans	0	0
Level 3
Fair Value Disclosures
Collateral dependent loans/Impaired loans	14,121,193	13,351,092
Nonrecurring
Fair Value Disclosures
Collateral dependent loans/Impaired loans	9,348	4,077
Nonrecurring | Level 1
Fair Value Disclosures
Collateral dependent loans/Impaired loans	0	0
Nonrecurring | Level 2
Fair Value Disclosures
Collateral dependent loans/Impaired loans	0	0
Nonrecurring | Level 3
Fair Value Disclosures
Collateral dependent loans/Impaired loans	$ 9,348	$ 4,077

Fair Value of Financial Instr_8

Fair Value of Financial Instruments - Fair Value Estimates (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Assets
Investments held-to-maturity	$ 169,154	$ 25,013
Investment securities available-for-sale	4,709,815	3,931,115
Derivative assets	8,642
Accrued interest receivable	63,228	74,574
Liabilities
Derivative liabilities	5,819
Level 1
Assets
Cash and cash equivalents	322,320	880,766
Investments held-to-maturity	0	0
Investment securities available-for-sale	0	0
Loans held for sale	0	0
Loans held for investment, net	0	0
Derivative assets	0	0
Accrued interest receivable	63,228	74,574
Liabilities
Deposit accounts	16,356,929	14,587,335
FHLB advances	0	0
Subordinated debentures	0	0
Derivative liabilities	0	0
Accrued interest payable	5,065	6,569
Level 1 | Interest-bearing time deposits with financial institutions
Assets
Cash and cash equivalents	2,708	2,845
Level 2
Assets
Cash and cash equivalents	0	0
Investments held-to-maturity	169,154	25,013
Investment securities available-for-sale	4,709,815	3,931,115
Loans held for sale	8,899	645
Loans held for investment, net	0	0
Derivative assets	6,747	12,053
Accrued interest receivable	0	0
Liabilities
Deposit accounts	1,167,405	1,631,047
FHLB advances	150,000	31,564
Subordinated debentures	367,515	544,436
Derivative liabilities	5,819	12,066
Accrued interest payable	0	0
Level 2 | Interest-bearing time deposits with financial institutions
Assets
Cash and cash equivalents	0	0
Level 3
Assets
Cash and cash equivalents	0	0
Investments held-to-maturity	0	0
Investment securities available-for-sale	0	0
Loans held for sale	0	0
Loans held for investment, net	14,121,193	13,351,092
Derivative assets	1,895	1,914
Accrued interest receivable	0	0
Liabilities
Deposit accounts	0	0
FHLB advances	0	0
Subordinated debentures	0	0
Derivative liabilities	0	0
Accrued interest payable	0	0
Level 3 | Interest-bearing time deposits with financial institutions
Assets
Cash and cash equivalents	0	0
Carrying Amount
Assets
Cash and cash equivalents	322,320	880,766
Investments held-to-maturity	170,576	23,732
Investment securities available-for-sale	4,709,815	3,931,115
Loans held for sale	8,100	601
Loans held for investment, net	13,982,861	13,236,433
Derivative assets	8,642	13,967
Accrued interest receivable	63,228	74,574
Liabilities
Deposit accounts	17,469,999	16,214,177
FHLB advances	150,000	31,000
Subordinated debentures	330,408	501,511
Derivative liabilities	5,819	12,066
Accrued interest payable	5,065	6,569
Carrying Amount | Interest-bearing time deposits with financial institutions
Assets
Cash and cash equivalents	2,708	2,845
Estimated Fair Value
Assets
Cash and cash equivalents	322,320	880,766
Investments held-to-maturity	169,154	25,013
Investment securities available-for-sale	4,709,815	3,931,115
Loans held for sale	8,899	645
Loans held for investment, net	14,121,193	13,351,092
Derivative assets	8,642	13,967
Accrued interest receivable	63,228	74,574
Liabilities
Deposit accounts	17,524,334	16,218,382
FHLB advances	150,000	31,564
Subordinated debentures	367,515	544,436
Derivative liabilities	5,819	12,066
Accrued interest payable	5,065	6,569
Estimated Fair Value | Interest-bearing time deposits with financial institutions
Assets
Cash and cash equivalents	$ 2,708	$ 2,845

Derivative Instruments - Narrat

Derivative Instruments - Narrative (Details) $ in Thousands	Jun. 01, 2020warrant_asset	Sep. 30, 2021USD ($)	Dec. 31, 2020USD ($)
Derivative [Line Items]
Derivative assets, notional		$ 435,580
Derivative assets		8,642
Designated as Hedging Instrument
Derivative [Line Items]
Derivative assets, notional		300,000
Derivative assets		932
Designated as Hedging Instrument | Interest rate swaps contracts
Derivative [Line Items]
Derivative assets, notional		300,000
Derivative assets		932
Not Designated as Hedging Instruments
Derivative [Line Items]
Derivative assets, notional		135,580	$ 145,181
Derivative assets		7,710	13,967
Not Designated as Hedging Instruments | Interest rate swaps contracts
Derivative [Line Items]
Derivative assets, notional		135,580	145,181
Derivative assets		5,815	12,053
Not Designated as Hedging Instruments | Equity warrants
Derivative [Line Items]
Derivative assets, notional		0	0
Derivative assets		1,895	1,914
Not Designated as Hedging Instruments | Equity warrants | Opus Bank
Derivative [Line Items]
Number of warrant assets acquired | warrant_asset	2
Not Designated as Hedging Instruments | Over the Counter
Derivative [Line Items]
Derivative assets, notional		135,600	145,200
Derivative assets		$ 5,800	$ 12,100

Derivative Instruments - Cumula

Derivative Instruments - Cumulative Basis Adjustment for Fair Value Hedges (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Derivative Instruments, Gain (Loss) [Line Items]
Carrying Amount of the Hedged Assets	$ 298,973	$ 0
Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Assets	(1,027)	0
Derivative assets, notional	435,580
Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Derivative assets, notional	300,000
Designated as Hedging Instrument | Interest rate swaps contracts
Derivative Instruments, Gain (Loss) [Line Items]
Derivative assets, notional	300,000
Loans held for investment
Derivative Instruments, Gain (Loss) [Line Items]
Carrying Amount of the Hedged Assets	298,973	0
Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Assets	(1,027)	$ 0
Loans held for investment | Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Amortized Cost used in hedging relationships	815,200
Cumulative basis adjustments associated with hedging relationships	$ 1,000

Derivative Instruments - Summar

Derivative Instruments - Summary (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Derivative [Line Items]
Derivative assets, notional	$ 435,580
Derivative assets	8,642
Derivative liabilities, notional	135,580
Derivative liabilities	5,819
Designated as Hedging Instrument
Derivative [Line Items]
Derivative assets, notional	300,000
Derivative assets	932
Derivative liabilities, notional	0
Derivative liabilities	0
Designated as Hedging Instrument | Fair value hedge - interest rate swap contracts
Derivative [Line Items]
Derivative assets, notional	300,000
Derivative assets	932
Derivative liabilities, notional	0
Derivative liabilities	0
Designated as Hedging Instrument | Interest rate swaps contracts
Derivative [Line Items]
Derivative assets, notional	300,000
Derivative assets	932
Not Designated as Hedging Instruments
Derivative [Line Items]
Derivative assets, notional	135,580	$ 145,181
Derivative assets	7,710	13,967
Derivative liabilities, notional	135,580	145,181
Derivative liabilities	5,819	12,066
Not Designated as Hedging Instruments | Interest rate swaps contracts
Derivative [Line Items]
Derivative assets, notional	135,580	145,181
Derivative assets	5,815	12,053
Derivative liabilities, notional	135,580	145,181
Derivative liabilities	5,819	12,066
Not Designated as Hedging Instruments | Equity warrants
Derivative [Line Items]
Derivative assets, notional	0	0
Derivative assets	1,895	1,914
Derivative liabilities, notional	0	0
Derivative liabilities	$ 0	$ 0

Derivative Instruments - The Ef

Derivative Instruments - The Effect of Fair Value Hedge Accounting on the Consolidated Statements of Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives designated as hedging instruments	$ (7)	$ 187	$ (10)	$ 380
Interest Income
Derivative Instruments, Gain (Loss) [Line Items]
Hedged items	(1,027)
Derivatives designated as hedging instruments	932
Other income | Interest rate products
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives designated as hedging instruments	1	0	9	0
Other income | Other contracts
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives designated as hedging instruments	0	218	0	415
Other income | Equity warrants
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives designated as hedging instruments	$ (8)	$ (31)	$ (19)	$ (35)

Balance Sheet Offsetting (Detai

Balance Sheet Offsetting (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Derivative assets:
Gross Amounts Recognized	$ 6,747	$ 12,053
Gross Amounts Offset in the Consolidated Statements of Financial Condition	0	0
Net Amounts Presented in the Consolidated Statements of Financial Condition	6,747	12,053
Financial Instruments	0	0
Cash Collateral	0	0
Net Amount	6,747	12,053
Derivative liabilities:
Gross Amounts Recognized	5,819	12,066
Gross Amounts Offset in the Consolidated Statements of Financial Condition	0	0
Net Amounts Presented in the Consolidated Statements of Financial Condition	5,819	12,066
Financial Instruments	(4,593)	(6,140)
Cash Collateral	(1,226)	(5,926)
Net Amount	0	0
Interest rate swaps contracts
Derivative assets:
Gross Amounts Recognized	6,747	12,053
Gross Amounts Offset in the Consolidated Statements of Financial Condition	0	0
Net Amounts Presented in the Consolidated Statements of Financial Condition	6,747	12,053
Financial Instruments	0	0
Cash Collateral	0	0
Net Amount	6,747	12,053
Derivative liabilities:
Gross Amounts Recognized	5,819	12,066
Gross Amounts Offset in the Consolidated Statements of Financial Condition	0	0
Net Amounts Presented in the Consolidated Statements of Financial Condition	5,819	12,066
Financial Instruments	(4,593)	(6,140)
Cash Collateral	(1,226)	(5,926)
Net Amount	$ 0	$ 0

Leases - Components of Lease Ex

Leases - Components of Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Leases [Abstract]
Operating lease	$ 4,826	$ 4,887	$ 5,618	$ 14,725	$ 12,690
Short-term lease	433	323	495	1,263	1,425
Total lease expense	$ 5,259	$ 5,210	$ 6,113	$ 15,988	$ 14,115

Leases - Narrative (Details)

Leases - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020	Jun. 01, 2020
Lessee, Lease, Description [Line Items]
Operating lease liabilities	$ 76,592			$ 76,592		$ 85,556
Operating lease right of use assets	67,586			67,586		$ 76,090
Rental income	$ 176	$ 177	$ 265	$ 528	$ 356
Opus Bank
Lessee, Lease, Description [Line Items]
Operating lease liabilities							$ 43,300
Operating lease right of use assets							42,400
Unfavorable lease liability adjustments							$ 900

Leases - Supplemental Informati

Leases - Supplemental Information (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Leases [Abstract]
Operating lease right of use assets	$ 67,586		$ 76,090
Operating lease liabilities	76,592		$ 85,556
Operating cash outflow from operating leases	$ 15,512	$ 10,946
Operating lease right-of-use asset, statement of financial position [Extensible List]	Other assets		Other assets
Operating lease liability, statement of financial position [Extensible List]	Accrued Liabilities and Other Liabilities		Accrued Liabilities and Other Liabilities

Leases - Minimum Contractual Le

Leases - Minimum Contractual Lease Payments and Other Information (Details) $ in Thousands	Sep. 30, 2021USD ($)
Operating leases
2021	$ 5,103
2022	20,058
2023	19,463
2024	17,454
2025	12,171
Thereafter	15,855
Total	90,104
Short-term leases
2021	130
2022	24
2023	0
2024	0
2025	0
Thereafter	0
Total	154
Total contractual base rents
2021	5,233
2022	20,082
2023	19,463
2024	17,454
2025	12,171
Thereafter	15,855
Total	90,258
Total liability to make lease payments	76,592
Difference in undiscounted and discounted future lease payments	$ 13,666
Weighted average discount rate	5.23%
Weighted average remaining lease term (years)	5 years 1 month 6 days

Revenue Recognition - Company's

Revenue Recognition - Company's Revenue Streams (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Noninterest income
Loan servicing income	$ 536	$ 622	$ 481	$ 1,616	$ 1,395
Earnings on bank-owned life insurance	3,266	2,279	2,270	7,778	4,920
Net gain from sales of loans	1,187	1,546	9,542	3,094	8,281
Net gain (loss) from sales of investment securities	4,190	5,085	1,141	13,321	8,880
Other income	4,049	3,955	2,198	12,606	6,340
Total noninterest income	30,100	26,729	26,758	80,569	48,131
Service charges on deposit accounts
Noninterest income
Noninterest income	2,375	2,222	1,593	6,629	4,707
Other service fee income
Noninterest income
Noninterest income	350	352	487	1,175	1,095
Debit card interchange income
Noninterest income
Noninterest income	834	1,099	944	2,720	1,749
Trust custodial account fees
Noninterest income
Noninterest income	11,446	7,897	6,960	26,565	9,357
Escrow and exchange fees
Noninterest income
Noninterest income	1,867	1,672	1,142	5,065	1,407
Within Scope
Noninterest income
Other income	(14)	97	91	365	227
Total noninterest income	16,858	13,339	11,217	42,519	18,542
Within Scope | Service charges on deposit accounts
Noninterest income
Noninterest income	2,375	2,222	1,593	6,629	4,707
Within Scope | Other service fee income
Noninterest income
Noninterest income	350	352	487	1,175	1,095
Within Scope | Debit card interchange income
Noninterest income
Noninterest income	834	1,099	944	2,720	1,749
Within Scope | Trust custodial account fees
Noninterest income
Noninterest income	11,446	7,897	6,960	26,565	9,357
Within Scope | Escrow and exchange fees
Noninterest income
Noninterest income	1,867	1,672	1,142	5,065	1,407
Out of Scope
Noninterest income
Loan servicing income	536	622	481	1,616	1,395
Earnings on bank-owned life insurance	3,266	2,279	2,270	7,778	4,920
Net gain from sales of loans	1,187	1,546	9,542	3,094	8,281
Net gain (loss) from sales of investment securities	4,190	5,085	1,141	13,321	8,880
Other income	4,063	3,858	2,107	12,241	6,113
Total noninterest income	$ 13,242	$ 13,390	$ 15,541	$ 38,050	$ 29,589

Revenue Recognition - Narrative

Revenue Recognition - Narrative (Details) - Trust custodial account fees - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation of Revenue [Line Items]
Accrued fees receivable	$ 10,400		$ 10,400
Accrued fees receivable asset, allowance for credit loss	(988)		(988)
Credit loss expense	$ 281	$ 12	$ 411	$ 76

Variable Interest Entities - Su

Variable Interest Entities - Summary (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Variable Interest Entity [Line Items]
Investment securities available-for-sale	$ 4,709,815	$ 3,931,115
Accrued Liabilities and Other Liabilities	216,688	243,207
Other assets	260,505	292,861
Total assets	21,005,211	19,736,544
Liabilities	18,167,095	16,989,895
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Maximum Loss	212,082	223,509
Total assets	180,585	190,686
Liabilities	19,852	18,526
Variable Interest Entity, Not Primary Beneficiary | Multifamily Loan Securitization
Variable Interest Entity [Line Items]
Investment securities available-for-sale	90,575	100,927
Accrued Liabilities and Other Liabilities	448	448
Variable Interest Entity, Not Primary Beneficiary | Multifamily Loan Securitization, Asset
Variable Interest Entity [Line Items]
Maximum Loss	90,575	100,927
Variable Interest Entity, Not Primary Beneficiary | Multifamily Loan Securitization, Liability
Variable Interest Entity [Line Items]
Maximum Loss	50,901	50,901
Variable Interest Entity, Not Primary Beneficiary | Affordable Housing Partnership
Variable Interest Entity [Line Items]
Accrued Liabilities and Other Liabilities	19,404	18,078
Other assets	90,010	89,759
Variable Interest Entity, Not Primary Beneficiary | Affordable Housing Partnership, Asset
Variable Interest Entity [Line Items]
Maximum Loss	70,606	71,681
Variable Interest Entity, Not Primary Beneficiary | Affordable Housing Partnership, Liability
Variable Interest Entity [Line Items]
Maximum Loss	$ 0	$ 0

Variable Interest Entities - Na

Variable Interest Entities - Narrative (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Jul. 31, 2021	Dec. 31, 2020
Variable Interest Entity [Line Items]
Accrued liabilities and other liabilities	$ 216,688		$ 243,207
Heritage Oaks Capital Trust II | Subordinated debt
Variable Interest Entity [Line Items]
Redeemed amount of debt instrument		$ 5,200
Santa Lucia Bancorp (CA) Capital Trust | Subordinated debt
Variable Interest Entity [Line Items]
Redeemed amount of debt instrument		$ 5,200
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Maximum Loss	$ 212,082		223,509
Variable Interest Entity, Not Primary Beneficiary | Multifamily Loan Securitization, Liability
Variable Interest Entity [Line Items]
Maximum loss, percentage of loans	10.00%
Maximum Loss	$ 50,901		50,901
Variable Interest Entity, Not Primary Beneficiary | Multifamily Loan Securitization
Variable Interest Entity [Line Items]
Accrued liabilities and other liabilities	$ 448		$ 448

Subsequent Events (Details)

Subsequent Events (Details) $ / shares in Units, $ in Thousands	Oct. 19, 2021$ / shares	Oct. 01, 2021USD ($)	Sep. 30, 2021USD ($)$ / shares	Sep. 30, 2020$ / shares	Sep. 30, 2021USD ($)$ / shares	Sep. 30, 2020$ / shares	Nov. 05, 2021office	Nov. 01, 2021USD ($)	Jul. 01, 2021USD ($)	Dec. 31, 2020USD ($)
Subsequent Event [Line Items]
Cash dividends declared (in dollars per share) | $ / shares			$ 0.33	$ 0.25	$ 0.96	$ 0.75
Unrealized loss on securities transferred from available-for-sale to held-to-maturity			$ 2,225		$ 2,225					$ 0
Municipal bonds
Subsequent Event [Line Items]
Securities transferred from available-for-sale to held-to-maturity			157,600
Unrealized loss on securities transferred from available-for-sale to held-to-maturity			$ 2,225		$ 2,225				$ 3,200
Subsequent Event
Subsequent Event [Line Items]
Cash dividends declared (in dollars per share) | $ / shares	$ 0.33
Number of bank branch offices consolidated | office							2
Number of bank branch offices operated | office							61
Subsequent Event | Interest rate swaps contracts | Fair Value Hedging | Designated as Hedging Instrument
Subsequent Event [Line Items]
Notional amount of derivatives								$ 300,000
Subsequent Event | Municipal bonds
Subsequent Event [Line Items]
Securities transferred from available-for-sale to held-to-maturity		$ 165,500
Unrealized loss on securities transferred from available-for-sale to held-to-maturity		3,400
Realized gain (loss) on securities transferred from available-for-sale to held-to-maturity		$ 0

Uncategorized Items - ppbi-2021

Label	Element	Value
Accounting Standards Update [Extensible Enumeration]	us-gaap_AccountingStandardsUpdateExtensibleList	Accounting Standards Update 2016-13 [Member]