Pacific Premier Bancorp (PPBI) 10-Q7 May 212021 Q1 Quarterly reportFinancial data

Company Profile

Cover Page

Cover Page - shares	3 Months Ended
Cover Page - shares	Mar. 31, 2021	Apr. 30, 2021
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2021
Document Transition Report	false
Entity File Number	0-22193
Entity Registrant Name	PACIFIC PREMIER BANCORP INC
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
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	PPBI
Security Exchange Name	NASDAQ
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		94,650,895
Entity Central Index Key	0001028918
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q1
Amendment Flag	false

CONSOLIDATED STATEMENTS OF FINA

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
ASSETS
Cash and due from banks	$ 118,258	$ 135,429
Interest-bearing deposits with financial institutions	1,436,410	745,337
Cash and cash equivalents	1,554,668	880,766
Interest-bearing time deposits with financial institutions	2,708	2,845
Investments held-to-maturity, at amortized cost (fair value of $23,004 and $25,013 as of March 31, 2021 and December 31, 2020, respectively)	21,931	23,732
Investment securities available-for-sale, at fair value	3,857,337	3,931,115
FHLB, FRB, and other stock, at cost	117,843	117,055
Loans held for sale, at lower of cost or fair value	7,311	601
Loans held for investment	13,117,392	13,236,433
Allowance for credit losses	(266,999)	(268,018)
Loans held for investment, net	12,850,393	12,968,415
Accrued interest receivable	65,098	74,574
Premises and equipment	76,329	78,884
Deferred income taxes, net	104,450	89,056
Bank owned life insurance	292,932	292,564
Intangible assets	81,364	85,507
Goodwill	900,204	898,569
Other assets	240,730	292,861
Total assets	20,173,298	19,736,544
Deposit accounts:
Noninterest-bearing checking	6,302,703	6,011,106
Interest-bearing:
Checking	3,155,071	2,913,260
Money market/savings	5,911,417	5,662,969
Retail certificates of deposit	1,353,431	1,471,512
Wholesale/brokered certificates of deposit	17,385	155,330
Total interest-bearing	10,437,304	10,203,071
Total deposits	16,740,007	16,214,177
FHLB advances and other borrowings	10,000	31,000
Subordinated debentures	501,611	501,511
Accrued expenses and other liabilities	218,582	243,207
Total liabilities	17,470,200	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 March 31, 2021 and December 31, 2020; 94,644,415 shares and 94,483,136 shares issued and outstanding, respectively.	931	931
Additional paid-in capital	2,348,445	2,354,871
Retained earnings	368,911	330,555
Accumulated other comprehensive (loss) income	(15,189)	60,292
Total stockholders’ equity	2,703,098	2,746,649
Total liabilities and stockholders’ equity	$ 20,173,298	$ 19,736,544

CONSOLIDATED STATEMENTS OF FI_2

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Investments held-to-maturity, fair value	$ 23,004	$ 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)	94,644,415	94,483,136
Common stock, shares outstanding (in shares)	94,644,415	94,483,136

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	3 Months Ended
CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020
INTEREST INCOME
Loans	$ 155,225	$ 163,499	$ 113,265
Investment securities and other interest-earning assets	17,769	17,325	10,524
Total interest income	172,994	180,824	123,789
INTEREST EXPENSE
Deposits	4,426	5,685	10,487
FHLB advances and other borrowings	65	121	1,081
Subordinated debentures	6,851	6,820	3,046
Total interest expense	11,342	12,626	14,614
Net interest income before provision for credit losses	161,652	168,198	109,175
Provision for credit losses	1,974	1,517	25,454
Net interest income after provision for credit losses	159,678	166,681	83,721
NONINTEREST INCOME
Loan servicing income	458	633	480
Earnings on bank-owned life insurance	2,233	2,240	1,336
Net gain from sales of loans	361	328	771
Net gain from sales of investment securities	4,046	5,002	7,760
Other income	4,602	3,197	1,754
Total noninterest income	23,740	23,194	14,475
NONINTEREST EXPENSE
Compensation and benefits	52,548	52,044	34,376
Premises and occupancy	11,980	13,268	8,168
Data processing	5,828	5,990	3,253
Other real estate owned operations, net	0	(5)	14
FDIC insurance premiums	1,181	1,213	367
Legal and professional services	3,935	4,305	3,126
Marketing expense	1,598	1,442	1,412
Office expense	1,829	2,191	1,103
Loan expense	1,115	1,084	822
Deposit expense	3,859	5,026	4,988
Merger-related expense	5	5,071	1,724
Amortization of intangible assets	4,143	4,505	3,965
Other expense	4,468	3,805	3,313
Total noninterest expense	92,489	99,939	66,631
Net income before income taxes	90,929	89,936	31,565
Income tax expense	22,261	22,800	5,825
Net income	$ 68,668	$ 67,136	$ 25,740
EARNINGS PER SHARE
Basic (in dollars per share)	$ 0.73	$ 0.71	$ 0.43
Diluted (in dollars per share)	$ 0.72	$ 0.71	$ 0.43
WEIGHTED AVERAGE SHARES OUTSTANDING
Basic (in shares)	93,529,147	93,568,994	59,007,191
Diluted (in shares)	94,093,644	93,969,188	59,189,717
Service charges on deposit accounts
NONINTEREST INCOME
Noninterest income	$ 2,032	$ 2,005	$ 1,715
Other service fee income
NONINTEREST INCOME
Noninterest income	473	459	311
Debit card interchange fee income
NONINTEREST INCOME
Noninterest income	787	777	348
Trust custodial account fees
NONINTEREST INCOME
Noninterest income	7,222	7,296	0
Escrow and exchange fees
NONINTEREST INCOME
Noninterest income	$ 1,526	$ 1,257	$ 0

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME/(LOSS) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income		$ 68,668	$ 67,136	$ 25,740
Other comprehensive income (loss), net of tax:
Unrealized holding (loss) gain on securities available-for-sale arising during the period, net of income taxes	[1]	(72,592)	18,201	28,420
Reclassification adjustment for net (loss) gain on sales of securities included in net income, net of income taxes	[2]	(2,889)	(3,572)	(5,534)
Other comprehensive (loss) income, net of tax		(75,481)	14,629	22,886
Comprehensive (loss) income, net of tax		$ (6,813)	$ 81,765	$ 48,626

[1]	Income tax (benefit) expense on the unrealized (loss) gain on securities was $(29.1) million for the three months ended March 31, 2021, $7.2 million for the three months ended December 31, 2020, and $11.4 million for the three months ended March 31, 2020.
[2]	Income tax expense (benefit) on the reclassification adjustment for net gain (loss) on sales of securities included in net income was $1.2 million for the three months ended March 31, 2021, $1.4 million for the three months ended December 31, 2020, and $2.2 million for the three months ended March 31, 2020.

CONSOLIDATED STATEMENTS OF CO_2

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME/(LOSS) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020
Statement of Comprehensive Income [Abstract]
Unrealized holding gain (loss) on securities arising during the period, income tax expense (benefit)	$ (29,100)	$ 7,200	$ 11,400
Reclassification adjustment for net (gains) losses on sale of securities included in net income, income tax expense (benefit)	$ 1,200	$ 1,400	$ 2,200

CONSOLIDATED STATEMENTS OF STOC

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - 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 Dec. 31, 2019	$ 2,012,594	$ (45,625)		$ 586	$ 1,594,434	$ 396,051	$ (45,625)		$ 21,523
Balance (in shares) at Dec. 31, 2019				59,506,057
Increase (Decrease) in Stockholders' Equity
Net income	25,740					25,740
Other comprehensive loss	22,886								22,886
Cash dividends declared	(14,882)					(14,882)
Dividend equivalents declared	0				42	(42)
Share-based compensation expense	2,309				2,309
Issuance of restricted stock, net	0
Issuance of restricted stock, net (in shares)				446,815
Restricted stock surrendered and canceled	(1,008)				(1,008)
Restricted stock surrendered and canceled (in shares)				(29,474)
Exercise of stock options	903				903
Exercise of stock options (in shares)				51,883
Balance at Mar. 31, 2020	2,002,917			$ 586	1,596,680	361,242			44,409
Balance (in shares) at Mar. 31, 2020				59,975,281
Balance at Dec. 31, 2020	$ 2,746,649			$ 931	2,354,871	330,555			60,292
Balance (in shares) at Dec. 31, 2020	94,483,136			94,483,136
Increase (Decrease) in Stockholders' Equity
Net income	$ 68,668					68,668
Other comprehensive loss	(75,481)								(75,481)
Repurchase and retirement of common stock	(6,897)			$ (2)	(4,977)	(1,918)
Repurchase and retirement of common stock (in shares)				(199,674)
Cash dividends declared	(28,287)					(28,287)
Dividend equivalents declared	0				107	(107)
Share-based compensation expense	3,105				3,105
Issuance of restricted stock, net				$ 2	(2)
Issuance of restricted stock, net	0
Issuance of restricted stock, net (in shares)				419,757
Restricted stock surrendered and canceled	(5,279)				(5,279)
Restricted stock surrendered and canceled (in shares)				(100,550)
Exercise of stock options	620				620
Exercise of stock options (in shares)				41,746
Balance at Mar. 31, 2021	$ 2,703,098			$ 931	$ 2,348,445	$ 368,911			$ (15,189)
Balance (in shares) at Mar. 31, 2021	94,644,415			94,644,415

[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 (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Stockholders' Equity [Abstract]
Cash dividends declared (in dollars per share)	$ 0.30	$ 0.25
Dividend equivalents declared (in dollars per share)	$ 0.30	$ 0.25

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020
Cash flows from operating activities:
Net income	$ 68,668	$ 67,136	$ 25,740
Adjustments to net income:
Depreciation and amortization expense	4,009		2,580
Provision for credit losses	1,974	1,517	25,454
Share-based compensation expense	3,105		2,309
Loss on sales and disposals of premises and equipment	7		10
Net amortization on securities	5,983		1,238
Net (accretion) of discounts/premiums for acquired loans and deferred loan fees/costs	(10,833)		(5,604)
Gain on sales of investment securities available-for-sale	(4,046)		(7,760)
Loss on debt extinguishment	503		0
Originations of loans held for sale	(7,768)		(10,491)
Proceeds from the sales of and principal payments from loans held for sale	970		13,961
Gain on sales of loans	(361)		(771)
Deferred income tax expense (benefit)	14,650		(7,476)
Change in accrued expenses and other liabilities, net	(34,203)		(5,058)
Income from bank owned life insurance, net	(1,675)		(1,129)
Amortization of intangible assets	4,143	4,505	3,965
Change in accrued interest receivable and other assets, net	60,176		8,953
Net cash provided by operating activities	105,302		45,921
Cash flows from investing activities:
Net decrease in interest-bearing time deposits with financial institutions	137		0
Loan originations and payments, net	128,540		11,902
Proceeds from loans held for sale previously classified as portfolio loans	449		25,038
Purchase of loans held for investment	0		(66,470)
Proceeds from prepayments and maturities of securities held-to-maturity	1,807		3,234
Purchase of securities available-for-sale	(364,542)		(104,725)
Proceeds from prepayments and maturities of securities available-for-sale	162,568		18,737
Proceeds from sale of securities available-for-sale	179,386		97,886
Proceeds from the sales of premises and equipment	4		38
Proceeds from bank owned life insurance settlements	1,307		0
Purchases of premises and equipment	(1,465)		(5,242)
Change in FHLB, FRB, and other stock, at cost	(202)		(8)
Funding of CRA investments, net	(3,873)		(2,705)
Net cash provided by (used in) investing activities	104,116		(22,315)
Cash flows from financing activities:
Net increase in deposit accounts	525,830		194,563
Net change in short-term borrowings	0		9,000
Repayment of long-term FHLB borrowings	(21,503)		(5,000)
Cash dividends paid	(28,287)		(14,882)
Repurchase and retirement of common stock	(6,897)		0
Proceeds from exercise of stock options	620		903
Restricted stock surrendered and canceled	(5,279)		(1,008)
Net cash provided by financing activities	464,484		183,576
Net increase in cash and cash equivalents	673,902		207,182
Cash and cash equivalents, beginning of period	880,766		326,850
Cash and cash equivalents, end of period	1,554,668	$ 880,766	534,032
Supplemental cash flow disclosures:
Interest paid	10,890		13,618
Income taxes paid	77		84
Noncash investing activities during the period:
Transfers from portfolio loans to loans held for sale	0		26,176
Recognition of operating lease right-of-use assets	0		(10,706)
Recognition of operating lease liabilities	0		10,706
Receivable on unsettled security sales	0		57,385
Due on unsettled security purchases	$ (11,286)		$ 0

Basis of Presentation

Basis of Presentation	3 Months Ended
Basis of Presentation	Mar. 31, 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 that are necessary for a fair presentation of the results for the interim periods presented. The results of operations for the three months ended March 31, 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	3 Months Ended
Recently Issued Accounting Pronouncements	Mar. 31, 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 include 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 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 to the expedients and exceptions in Topic 848 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 does not currently engage in hedging related transactions, and as such, the amendments included in this Update have not had an impact on the Company’s consolidated financial statements. 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	3 Months Ended
Significant Accounting Policies	Mar. 31, 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. 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. 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 March 31, 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 up, or on a straight-line amortization method over their estimated useful lives, which range from 6 to 11 years. 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 liability or 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 March 31, 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. 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. Allowance for Credit Losses 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. For available-for-sale investment securities, the Company performs a quarterly qualitative evaluation for 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, while credit losses on held-to-maturity securities are measured on a collective basis according to shared risk characteristics. Credit losses on held-to-maturity securities are only recognized at the individual security level when the Company determines a security no longer possesses risk characteristics similar to others in the portfolio. 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 collectable. 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 and costs is discontinued for loans placed on nonaccrual. Any remaining discounts, premiums, deferred 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 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 expected 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 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 expected cash flows beyond a period deemed reasonable and supportable. The Company forecasts economic conditions and expected credit losses over a two-year time horizon before reverting to long-term average loss rates. 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 represents the amount by which the loan’s amortized cost exceeds the net present value of a loan’s discounted cash flows. 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. 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 backtesting, 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 allowance 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 March 31, 2021, the Company had the following detailed segmentation on 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 efforts on single homes and small infill 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. 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 includes revolving lines or 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. 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, we have acquired first lien single family loans 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 for banking clients only, 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 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, the loan has performed under the modified terms of the loan agreement for a period of at least six months, and the ultimate collectability of all contractual amounts due under the modified terms of the loan agreement 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 fair value of the collateral less cost 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 qualifying loan modifications. For such 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. For additional information, see Note 6 - Loans Held for Investment . Acquired Loans. Loans acquired through a purchase or a business combination are recorded at their fair value at the acquisition date. The Company performs an assessment of acquired loans to first 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. For loans that have not experienced more than insignificant deterioration in credit quality

Acquisitions

Acquisitions	3 Months Ended
Acquisitions	Mar. 31, 2021
Business Combinations [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 IRAs, 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 expands 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. May 29, 2020 Merger consideration (Dollars in thousands) 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. CDI of $16.1 million, customer relationship intangible of $3.2 million, and goodwill of $91.9 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: Identifiable net assets acquired, at fair value June 1, 2020 (Dollars in thousands) 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 44,835 Other assets 368,837 Total assets acquired $ 8,010,399 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 identifiable net assets 657,723 Total merger consideration 749,605 Goodwill recognized $ 91,882 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 $962,000 related to loans, deferred tax assets, other assets, and other liabilities. As of March 31, 2021, the final purchase price remains subject to final adjustments and fair value measurements remain preliminary due to the timing of the acquisition. The Company continues to review information relating to events or circumstances existing at the acquisition date and expects to finalize its analysis of the acquired assets and assumed liabilities not later than one year after the acquisition. Management anticipates that this review could result in adjustments to the acquisition date valuation amounts presented herein but does not anticipate that these adjustments, if any, would be material. 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 is 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 three months ended March 31, 2021 compared with $1.7 million during the three months ended March 31, 2020. Merger-related expenses are included in other 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 months ended March 31, 2021 and 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 March 31, 2021 March 31, 2020 (Dollar in thousands, except per share data) Net interest and other income $ 185,392 $ 197,117 Net income 68,668 43,128 Basic earnings per share 0.73 0.47 Diluted earnings per share 0.72 0.47

Investment Securities

Investment Securities	3 Months Ended
Investment Securities	Mar. 31, 2021
Investments, Debt and Equity Securities [Abstract]
Investment Securities	Investment Securities The amortized cost and estimated fair value of securities were as follows: March 31, 2021 Amortized Gross Unrealized Gross Unrealized Estimated (Dollars in thousands) Investment securities available-for-sale: U.S. Treasury $ 30,144 $ 1,919 $ — $ 32,063 Agency 660,582 12,956 (10,379) 663,159 Corporate 360,617 2,128 (4,911) 357,834 Municipal bonds 1,432,169 22,287 (32,394) 1,422,062 Collateralized mortgage obligations 514,250 431 (5,710) 508,971 Mortgage-backed securities 880,903 9,309 (16,964) 873,248 Total investment securities available-for-sale 3,878,665 49,030 (70,358) 3,857,337 Investment securities held-to-maturity: Mortgage-backed securities 20,353 1,073 — 21,426 Other 1,578 — — 1,578 Total investment securities held-to-maturity 21,931 1,073 — 23,004 Total investment securities $ 3,900,596 $ 50,103 $ (70,358) $ 3,880,341 December 31, 2020 Amortized Gross Unrealized Gross Unrealized Estimated (Dollars in thousands) Investment securities available-for-sale: 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 Investment securities held-to-maturity: Mortgage-backed securities 22,124 1,281 — 23,405 Other 1,608 — — 1,608 Total investment securities held-to-maturity 23,732 1,281 — 25,013 Total investment securities $ 3,870,465 $ 91,285 $ (5,622) $ 3,956,128 Unrealized gains and losses on investment securities available-for-sale are recognized in stockholders’ equity as accumulated other comprehensive income or loss. At March 31, 2021, the Company had accumulated other comprehensive loss of $21.3 million, or $15.2 million net of tax, compared to an accumulated other comprehensive income of $84.4 million, or $60.3 million net of tax, at December 31, 2020. At March 31, 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. 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. The Company recognizes credit losses in current period earnings, through a change to provision for credit losses, when declines in the fair value of individual available-for-sale securities are below their amortized cost, and the decline in fair value is deemed to be credit related. Declines in fair value below amortized cost not deemed credit related are recorded net of tax in accumulated other comprehensive income. 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. 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. As of March 31, 2021, the Company has 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 March 31, 2021, and does not believe the declines in fair value are credit related. There was no provision for credit losses recognized for investment securities during the three months ended March 31, 2021, December 31, 2020, and March 31, 2020. At March 31, 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 March 31, 2021 and December 31, 2020, there were no securities purchased with deterioration in credit quality since their origination. At March 31, 2021 and December 31, 2020, there were no collateral dependent available-for-sale or held-to-maturity securities. The table below shows the 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. March 31, 2021 Less than 12 Months 12 Months or Longer Total Number Fair Gross Number Fair Gross Number Fair Gross (Dollars in thousands) Investment securities available-for-sale: Agency 28 $ 389,387 $ (10,094) 9 $ 9,947 $ (285) 37 $ 399,334 $ (10,379) Corporate 18 152,134 (4,911) — — — 18 152,134 (4,911) Municipal bonds 173 921,332 (32,394) — — — 173 921,332 (32,394) Collateralized mortgage obligations 32 309,975 (5,708) 1 388 (2) 33 310,363 (5,710) Mortgage-backed securities. 70 671,400 (16,964) — — — 70 671,400 (16,964) Total investment securities available-for-sale 321 $ 2,444,228 $ (70,071) 10 $ 10,335 $ (287) 331 $ 2,454,563 $ (70,358) December 31, 2020 Less than 12 Months 12 Months or Longer Total Number Fair Gross Number Fair Gross Number Fair Gross (Dollars in thousands) 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) The amortized cost and estimated fair value of investment securities at March 31, 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 Amortized Fair Amortized Fair Amortized Fair Amortized Fair Amortized Fair (Dollars in thousands) Investment securities available-for-sale: U.S. Treasury $ — $ — $ 30,144 $ 32,063 $ — $ — $ — $ — $ 30,144 $ 32,063 Agency — — 322,038 325,584 251,286 252,084 87,258 85,491 660,582 663,159 Corporate 94,711 94,917 9,683 9,645 218,847 218,536 37,376 34,736 360,617 357,834 Municipal bonds 11,286 11,286 4,622 4,912 36,182 38,652 1,380,079 1,367,212 1,432,169 1,422,062 Collateralized mortgage obligations — — 27,394 27,373 211,472 207,662 275,384 273,936 514,250 508,971 Mortgage-backed securities — — 2,144 2,283 190,923 195,067 687,836 675,898 880,903 873,248 Total investment securities available-for-sale 105,997 106,203 396,025 401,860 908,710 912,001 2,467,933 2,437,273 3,878,665 3,857,337 Investment securities held-to-maturity: Mortgage-backed securities — — — — — — 20,353 21,426 20,353 21,426 Other — — — — — — 1,578 1,578 1,578 1,578 Total investment securities held-to-maturity — — — — — — 21,931 23,004 21,931 23,004 Total investment securities $ 105,997 $ 106,203 $ 396,025 $ 401,860 $ 908,710 $ 912,001 $ 2,489,864 $ 2,460,277 $ 3,900,596 $ 3,880,341 During the three months ended March 31, 2021, December 31, 2020, and March 31, 2020, the Company recognized gross gains on sales of available-for-sale securities in the amount of $4.2 million, $5.3 million, and $8.0 million, respectively. During the three months ended March 31, 2021, December 31, 2020, and March 31, 2020, the Company recognized gross losses on sales of available-for-sale securities in the amount of $191,000, $285,000, and $204,000, respectively. The Company had net proceeds from the sales of available-for-sale securities of $179.4 million, $207.6 million, and $97.9 million, during the three months ended March 31, 2021, December 31, 2020, and March 31, 2020, respectively. Investment securities with carrying values of $128.1 million and $147.3 million as of March 31, 2021 and December 31, 2020, respectively, were pledged to secure public deposits, other borrowings, and for other purposes as required or permitted by law. 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 March 31, 2021, the Company had $17.3 million in FHLB stock, $74.5 million in FRB stock and $26.1 million in other stock, all carried at cost. During the three months ended March 31, 2021, December 31, 2020, and March 31, 2020, the FHLB did not repurchase any of the Company’s excess FHLB stock through its stock repurchase program. The Company evaluates its investments in FHLB, FRB, and other stock for impairment periodically, including their capital adequacy and overall financial condition. No impairment losses have been recorded through March 31, 2021. Allowance for Credit Losses on Investment Securities The Company accounts for credit losses on debt securities in accordance with ASC 326, which requires the Company to record an ACL on held-to-maturity investment securities at the time of purchase or acquisition. The ACL for held-to-maturity investment securities represents the Company’s current estimate of expected credit losses that may be incurred over the life of the investment. 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 to be credit related through the Company’s qualitative assessment. Non-credit related declines in fair value of available-for-sale investment securities are not recorded through an ACL, but rather recorded as an adjustment to accumulated other comprehensive income, net of tax. 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. The Company did not record an ACL for available-for-sale or held-to-maturity investment securities during the three months ended March 31, 2021, December 31, 2020, and March 31, 2020. For available-for-sale securities where estimated fair value was below amortized cost, such declines were deemed non-credit related and recorded as an adjustment to accumulated other comprehensive income, net of tax. Non-credit related decline in fair value of available-for-sale investment securities can be attributed to changes in interest rates and other market related factors. The Company did not record an ACL for held-to maturity securities during the three months ended March 31, 2021, December 31, 2020, and March 31, 2020 because the likelihood of non-repayment is remote. The following table summarizes the Company’s investment securities portfolio by Moody’s external rating equivalent and by vintage as of March 31, 2021: Vintage 2021 2020 2019 2018 2017 Prior Total (Dollars in thousands) Investment securities available-for-sale: U.S. Treasury Aaa - Aa3 $ — $ — $ — $ 21,510 $ 10,553 $ — $ 32,063 Agency Aaa - Aa3 — 352,414 73,090 151,364 9,075 77,216 663,159 Corporate debt A1 - A3 — 56,760 — — — 93,295 150,055 Baa1 - Baa3 — 98,707 69,231 — 17,919 21,922 207,779 Municipal bonds Aaa - Aa3 11,286 994,512 285,174 32,304 59,458 35,689 1,418,423 A1 - A3 — — — — — 2,313 2,313 Baa1 - Baa3 — — — — — 1,326 1,326 Collateralized mortgage obligations Aaa - Aa3 17,334 241,843 93,697 25,311 14,634 116,152 508,971 Mortgage-backed securities Aaa - Aa3 185,205 458,327 109,257 13,155 47,529 59,775 873,248 Total investment securities available-for-sale 213,825 2,202,563 630,449 243,644 159,168 407,688 3,857,337 Investment securities held-to-maturity: Mortgage-backed securities Aaa - Aa3 — — — 5,822 5,186 9,345 20,353 Other Baa1 - Baa3 — — — 617 — 961 1,578 Total investment securities held-to-maturity — — — 6,439 5,186 10,306 21,931 Total investment securities $ 213,825 $ 2,202,563 $ 630,449 $ 250,083 $ 164,354 $ 417,994 $ 3,879,268

Loans Held for Investment

Loans Held for Investment	3 Months Ended
Loans Held for Investment	Mar. 31, 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: March 31, December 31, 2021 2020 (Dollars in thousands) Investor loans secured by real estate CRE non-owner-occupied $ 2,729,785 $ 2,675,085 Multifamily 5,309,592 5,171,356 Construction and land 316,458 321,993 SBA secured by real estate 56,381 57,331 Total investor loans secured by real estate 8,412,216 8,225,765 Business loans secured by real estate CRE owner-occupied 2,029,984 2,114,050 Franchise real estate secured 340,805 347,932 SBA secured by real estate 73,967 79,595 Total business loans secured by real estate 2,444,756 2,541,577 Commercial loans Commercial and industrial 1,656,098 1,768,834 Franchise non-real estate secured 399,041 444,797 SBA non-real estate secured 14,908 15,957 Total commercial loans 2,070,047 2,229,588 Retail loans Single family residential 184,049 232,574 Consumer 6,324 6,929 Total retail loans 190,373 239,503 Gross loans held for investment (1) 13,117,392 13,236,433 Allowance for credit losses for loans held for investment (266,999) (268,018) Loans held for investment, net $ 12,850,393 $ 12,968,415 Loans held for sale, at lower of cost or fair value $ 7,311 $ 601 ______________________________ (1) Includes unaccreted fair value net purchase discounts of $103.9 million and $113.8 million as of March 31, 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 March 31, 2021 and December 31, 2020, the servicing asset totaled $4.6 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 March 31, 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 March 31, 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 $637.4 million at March 31, 2021 and $686.0 million at December 31, 2020. Included within the balances were loans transferred through securitization with Freddie Mac of $95.5 million and SBA participations serviced for others of $398.2 million at March 31, 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 March 31, 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 real estate, commercial non-owner-occupied real estate, commercial owner-occupied real estate loans, and commercial and industrial 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. While management believes that the collateral presently securing these loans is adequate, there can be no assurances that a significant deterioration in the California real estate market or economy would not expose the Company to significantly greater credit risk. 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 $812.9 million for secured loans and $487.8 million for unsecured loans at March 31, 2021. In order to manage concentration risk, the Bank maintains a house lending limit well below these statutory maximums. At March 31, 2021, the Bank’s largest aggregate outstanding balance of loans to one borrower was $184.2 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 nearly all 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 March 31, 2021: Term Loans by Vintage 2021 2020 2019 2018 2017 Prior Revolving Revolving Converted to Term During the Period Total March 31, 2021 (Dollars in thousands) Investor loans secured by real estate CRE non-owner-occupied Pass $ 124,225 $ 272,001 $ 501,036 $ 482,052 $ 278,439 $ 972,783 $ 10,779 $ — $ 2,641,315 Special mention — — 2,004 8,619 438 43,694 — — 54,755 Substandard — — 25,740 1,856 — 5,571 548 — 33,715 Multifamily Pass 405,022 1,005,928 1,626,859 791,365 629,525 834,458 1,426 — 5,294,583 Special mention — — 1,755 2,629 — 9,294 — — 13,678 Substandard — — — — 559 772 — — 1,331 Construction and land Pass 12,496 76,486 133,997 53,795 12,264 26,377 1,043 — 316,458 SBA secured by real estate Pass — — 7,409 8,991 15,383 12,485 — — 44,268 Special mention — 498 1,033 1,161 1,002 1,124 — — 4,818 Substandard — — 1,168 2,365 1,091 2,671 — — 7,295 Total investor loans secured by real estate 541,743 1,354,913 2,301,001 1,352,833 938,701 1,909,229 13,796 — 8,412,216 Business loans secured by real estate CRE owner-occupied Pass 108,753 283,401 373,667 280,703 304,938 638,844 8,946 — 1,999,252 Special mention — 2,190 — 3,792 3,045 4,319 — — 13,346 Substandard — — — 4,143 5,884 7,109 250 — 17,386 Franchise real estate secured Pass 23,192 43,635 71,269 62,905 81,819 52,837 — — 335,657 Special mention — 878 1,650 2,620 — — — — 5,148 SBA secured by real estate Pass 510 3,237 7,587 12,262 13,155 27,937 — — 64,688 Special mention — — — 1,186 — 1,175 — — 2,361 Substandard — — — 161 2,111 4,646 — — 6,918 Total loans secured by business real estate 132,455 333,341 454,173 367,772 410,952 736,867 9,196 — 2,444,756 Term Loans by Vintage 2021 2020 2019 2018 2017 Prior Revolving Revolving Converted to Term During the Period Total March 31, 2021 (Dollars in thousands) Commercial Loans Commercial and industrial Pass 62,622 112,135 272,585 142,706 195,658 112,930 694,022 1,699 1,594,357 Special mention — 655 — 2,219 177 1,460 16,377 — 20,888 Substandard — 1,389 2,936 3,619 218 3,622 29,069 — 40,853 Franchise non-real estate secured Pass 15,398 27,216 138,064 86,988 43,294 50,126 1,361 — 362,447 Special mention — — 7,028 1,984 216 2,605 — — 11,833 Substandard — — 2,071 3,637 18,181 872 — — 24,761 SBA non-real estate secured Pass 72 422 2,212 1,511 2,816 4,337 — — 11,370 Special mention — — — — 1,456 — — — 1,456 Substandard — — 81 353 270 686 692 — 2,082 Total commercial loans 78,092 141,817 424,977 243,017 262,286 176,638 741,521 1,699 2,070,047 Retail Loans Single family residential Pass 6,582 7,624 4,349 10,708 11,169 120,675 22,662 — 183,769 Substandard — — — — — 280 — — 280 Consumer loans Pass 2 47 101 35 22 3,998 2,073 — 6,278 Substandard — — 7 — — 39 — — 46 Total retail loans 6,584 7,671 4,457 10,743 11,191 124,992 24,735 — 190,373 Totals gross loans $ 758,874 $ 1,837,742 $ 3,184,608 $ 1,974,365 $ 1,623,130 $ 2,947,726 $ 789,248 $ 1,699 $ 13,117,392 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 2020 2019 2018 2017 2016 Prior Revolving Revolving Converted to Term During the Period Total December 31, 2020 (Dollars in thousands) 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 2020 2019 2018 2017 2016 Prior Revolving Revolving Converted to Term During the Period Total December 31, 2020 (Dollars in thousands) 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 Current 30-59 60-89 90+ Total (Dollars in thousands) March 31, 2021 Investor loans secured by real estate CRE non-owner-occupied $ 2,719,494 $ 9,743 $ — $ 548 $ 2,729,785 Multifamily 5,309,592 — — — 5,309,592 Construction and land 316,458 — — — 316,458 SBA secured by real estate 55,941 — — 440 56,381 Total investor loans secured by real estate 8,401,485 9,743 — 988 8,412,216 Business loans secured by real estate CRE owner-occupied 2,024,680 — — 5,304 2,029,984 Franchise real estate secured 340,805 — — — 340,805 SBA secured by real estate 73,307 — — 660 73,967 Total business loans secured by real estate 2,438,792 — — 5,964 2,444,756 Commercial loans Commercial and industrial 1,651,203 3,068 61 1,766 1,656,098 Franchise non-real estate secured 399,041 — — — 399,041 SBA not secured by real estate 13,911 305 — 692 14,908 Total commercial loans 2,064,155 3,373 61 2,458 2,070,047 Retail loans Single family residential 184,049 — — — 184,049 Consumer loans 6,324 — — — 6,324 Total retail loans 190,373 — — — 190,373 Totals $ 13,094,805 $ 13,116 $ 61 $ 9,410 $ 13,117,392 Days Past Due Current 30-59 60-89 90+ Total Gross Loans (Dollars in thousands) 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 loans $ 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 March 31, 2021, $38.9 million of loans were individually evaluated, and the ACL attributed to such loans totaled $688,000. At March 31, 2021, $16.9 million of individually evaluated loans were evaluated using a discounted cash flow approach and $22.0 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 $38.9 million and $29.2 million at March 31, 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 may be returned to accrual status when the loan is brought current, has 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 in no longer in doubt. At March 31, 2021 and December 31, 2020, there were no loans modified as TDRs. During the three months ended March 31, 2021, there were no loans modified as TDRs and no TDRs that experienced payment defaults after modifications within the previous 12 months. During the three months ended March 31, 2020, one TDR of $1.3 million experienced a payment default and was placed on nonaccrual. 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 allows 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, 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. 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 March 31, 2021, there were no loans remaining within their modification period due to COVID-19 hardship under the CARES Act. Additionally, as of March 31, 2021, there were no loans 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 hardship modification period, of which $20.2 million of loans had migrated to the substandard risk grade. No loans were in-process for potential modification as of December 31, 2020. 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 of the loans, and any resulting discount or premium related to factors other than credit. Subsequent changes (favorable and unfavorable) in expected cash flows are recognized immediately in net income by adjusting the related ACL. 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. Loans may be returned to accruing status if the Company believes that all remaining principal and interest is fully collectible and there has been at least three months of sustained repayment performance since the loan was placed on nonaccrual. 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 of interest. The Company had no loans 90 days or more past due and still accruing at March 31, 2021 and December 31, 2020. Nonaccrual loans totaled $38.9 million at March 31, 2021 and $29.2 million as of December 31, 2020. No interest income was recognized on nonaccrual loans during the three months ended March 31, 2021 and March 31, 2020. The following tables provide a summary of nonaccrual loans as of the dates indicated: Nonaccrual Loans (1) Collateral Dependent Loans ACL Non-Collateral Dependent Loans ACL Total Nonaccrual Loans Nonaccrual Loans with No ACL (Dollars in thousands) March 31, 2021 Investor loans secured by real estate CRE non-owner-occupied $ 12,284 $ — $ — $ — $ 12,284 $ 12,284 SBA secured by real estate 440 — — — 440 440 Total investor loans secured by real estate 12,724 — — — 12,724 12,724 Business loans secured by real estate CRE owner-occupied 6,060 — — — 6,060 6,060 SBA secured by real estate 727 — — — 727 727 Total business loans secured by real estate 6,787 — — — 6,787 6,787 Commercial loans Commercial and industrial 1,767 — 3,843 688 5,610

Allowance for Credit Losses

Allowance for Credit Losses	3 Months Ended
Allowance for Credit Losses	Mar. 31, 2021
Provision for Loan and Lease Losses [Abstract]
Allowance for Credit Losses	Allowance for Credit Losses The Company accounts for credit losses on loans and unfunded loan commitments in accordance with ASC 326 - Financial Instruments - Credit Losses , to determine the ACL. 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 the lifetime expected credit loss associated with a loan given the facts and circumstances associated with the particular loan, and 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 the origination of the 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 loans is determined by measuring the amount by which a loan’s amortized cost exceeds its discounted cash flows. Probability of Default The PD for commercial real estate loans 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 changes in 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. Significant loan and property level attributes include: loan to value ratios, debt service coverage, loan size, loan vintage and property types. The PD for 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 loans in the commercial segment, the PD assigned to them also changes. As with commercial real estate loans, the PD for 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 the loan. The Company uses economic scenarios from an independent third party, Moody’s Analytics, in its estimation of a borrower’s ability to repay a loan in future periods. 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 March 31, 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 weightings 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 in the first quarter of 2021 is consistent with the approach used in the Company’s ACL model during the fourth quarter of 2020. As of March 31, 2020, and in response to the onset of the COVID-19 pandemic, the Company with the assistance of an independent third party, determined it appropriate to include an economic scenario in its ACL model that was reflective of the estimated economic effects of the pandemic, including the responses to contain the pandemic. This scenario was referred to as the critical pandemic scenario. Additionally, the Company evaluated the weightings of each economic scenario in the first quarter of 2020 with the assistance of an independent third party, and revised those weightings to levels it believed appropriate to reflect the likelihood of outcomes for each scenario given the change in economic environment during the first quarter of 2020. As such, for the three months ended March 31, 2020, the Company’s ACL model incorporated three economic scenarios comprised of: the critical pandemic scenario weighted 30%, the more severe (as compared to the critical pandemic scenario) downside scenario weighted 32.5% and the base-case scenario weighted 37.5%. These weightings were reflective of rapidly changing economic conditions, economic uncertainty and volatility in financial markets due to the onset of the COVID-19 pandemic, and the estimated likelihood that each scenario may occur as of March 31, 2020. The Company currently forecasts economic conditions over a two-year period, which we believe is a reasonable and supportable period. Beyond the point which the Company can provide for a reasonable and supportable forecast, economic variables 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, data-base managers and operational engineers with a history of producing monthly economic forecasts for over 25 years. 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 March 31, 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: • CRE Price Index experiences declines throughout 2021, with the estimated annualized rate of decline slowing from approximately -13% in early 2021 to approximately -3% by the end of 2021. This scenario also assumes the CRE Price Index returns to modest levels of growth beginning in the first quarter of 2022, with the rate of growth increasing through the end of 2022. • U.S. real GDP experiences growth within a range of 6-7% on an annualized basis throughout 2021. This scenario also assumes decelerating growth in real GDP throughout 2022, from the levels estimated for 2021. Growth in real GDP for 2022 under this scenario decelerates from approximately 7% annualized in early 2022 to approximately 2% annualized by the end of 2022. • U.S. unemployment declining from approximately 6% in early 2021 to approximately 5% by the end of 2021. This scenario also assumes unemployment continues to decline in 2022 from approximately 5% in early 2022 to approximately 4% by the end of 2022. Upside Scenario: • CRE Price Index experiences a decline in first half of 2021, and then returning to growth of approximately 5% on an annualized basis during the second half of 2021. • U.S. real GDP experiences accelerating growth within a range of 5-10% on an annualized basis throughout 2021. This scenario also assumes decelerating growth in real GDP throughout 2022, from the levels estimated for 2021. Growth in real GDP for 2022 under this scenario decelerates from approximately 10% annualized in early 2022 to approximately 1% annualized by the end of 2022. • U.S. unemployment declining from approximately 6% in early 2021 to approximately 3% by the end of 2021. This scenario also assumes unemployment of 3% throughout all of 2022. Downside Scenario: • CRE Price Index experiences accelerating declines throughout 2021. Annualized declines of approximately -13% in Q1 2021 and accelerating to approximately -23% by the end of 2021. For 2022, the CRE Price Index is estimated to continue to decline through Q3 2022, before returning to growth in Q4 2022. • U.S. real GDP experiences growth of approximately 5% in Q1 2021, followed by decreases of -3% for Q2, -2% for Q3 and -1% for Q4 of 2021. This scenario also assumes modest annualized growth in real GDP in 2022 of approximately 2-3%. • U.S. unemployment increases throughout 2021 from approximately 6% in early 2021 to approximately 8% by the end of 2021. This scenario also assumes unemployment remains elevated in 2022 at approximately 8%. 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 March 31, 2021, qualitative adjustments included in the ACL totaled $8.0 million. These adjustments relate to potential limitations in the model, as well as continued uncertainty concerning the strength of the economic recovery. Management determined through additional review that certain key model drivers are potentially underestimating the impact the ongoing COVID-19 pandemic may have on certain segments and classes of the loan portfolio, such as commercial real estate, franchise real estate secured loans, and SBA hotel loans. 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 March 31, 2021 Beginning ACL Balance Charge-offs Recoveries Provision for Credit Losses Ending (Dollars in thousands) Investor loans secured by real estate CRE non-owner occupied $ 49,176 $ (154) $ — $ (3,477) $ 45,545 Multifamily 62,534 — — 17,281 79,815 Construction and land 12,435 — — 828 13,263 SBA secured by real estate 5,159 (265) — 247 5,141 Business loans secured by real estate CRE owner-occupied 50,517 — 15 (8,938) 41,594 Franchise real estate secured 11,451 — — (575) 10,876 SBA secured by real estate 6,567 (98) — (18) 6,451 Commercial loans Commercial and industrial 46,964 (1,279) 601 (2,913) 43,373 Franchise non-real estate secured 20,525 (156) — (1,466) 18,903 SBA non-real estate secured 995 — 2 (107) 890 Retail loans Single family residential 1,204 — — (382) 822 Consumer loans 491 — — (165) 326 Totals $ 268,018 $ (1,952) $ 618 $ 315 $ 266,999 Three Months Ended March 31, 2020 Beginning ACL Balance (1) Adoption of ASC 326 Charge-offs Recoveries Provision for Credit Losses Ending (Dollars in thousands) Investor loans secured by real estate CRE non-owner occupied $ 1,899 $ 8,423 $ (387) $ — $ 5,961 $ 15,896 Multifamily 729 9,174 — — 4,819 14,722 Construction and land 4,484 (124) — — 4,862 9,222 SBA secured by real estate 1,915 (1,401) — — 421 935 Business loans secured by real estate CRE owner-occupied 2,781 20,166 — 12 3,834 26,793 Franchise real estate secured 592 5,199 — — 1,712 7,503 SBA secured by real estate 2,119 2,207 (315) 71 (38) 4,044 Commercial loans Commercial and industrial 13,857 87 (490) 5 2,283 15,742 Franchise non-real estate secured 5,816 9,214 — — 1,586 16,616 SBA non-real estate secured 445 218 (236) 4 85 516 Retail loans Single family residential 655 541 — — (59) 1,137 Consumer loans 406 1,982 (8) — (84) 2,296 Totals $ 35,698 $ 55,686 $ (1,436) $ 92 $ 25,382 $ 115,422 (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 ending ACL balance is reflective of current expected credit losses, accounted for under ASC 326. The decrease in the ACL for loans held for investment during the three months ended March 31, 2021 of $1.0 million is reflective of a $315,000 in provision for credit losses and $1.3 million in net charge-offs. The provision for credit losses for the three months ended March 31, 2021 is reflective of continued unfavorable, but improving economic conditions and forecasts used in the Company’s ACL model. The change in the ACL for the three months ended March 31, 2020 of $79.7 million is 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, a $25.4 million provision for credit losses on loans, and net charge-offs of $1.3 million. The provision for credit losses for the three months ended March 31, 2020 is reflective of unfavorable changes in 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 allowance for credit losses 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 $32.8 million at March 31, 2021 and $31.1 million at December 31, 2020. The change in the allowance for off-balance sheet commitments can be attributed to a $1.7 million in provision for credit losses during the three months ended March 31, 2021 related primarily to an increase in unfunded lines of credit in conjunction with continued unfavorable, but improving economic conditions and forecasts reflected in the Company’s CECL model. The allowance for off-balance sheet commitments totaled $11.6 million as of March 31, 2020. The provision for credit losses attributable to unfunded loan commitments was $72,000 for the three month ended March 31, 2020. The Company applies an expected credit loss estimation methodology for off-balance sheet commitments that is 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 the probability that a loan will fund, as well as the expected amount of funding. 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 Term Loans by Vintage 2021 2020 2019 2018 2017 Prior Revolving Revolving Converted to Term During the Period Total March 31, 2021 (Dollars in thousands) Investor loans secured by real estate CRE non-owner-occupied 0% - 5.00% $ 124,225 $ 244,225 $ 447,464 $ 445,435 $ 223,077 $ 927,154 $ 10,779 $ — $ 2,422,359 >5.00% - 10.00% — 25,477 9,581 14,151 12,408 73,255 — — 134,872 Greater than 10% — 2,299 71,735 32,941 43,392 21,639 548 — 172,554 Multifamily 0% - 5.00% 372,435 946,666 1,564,508 763,445 611,026 812,130 1,426 — 5,071,636 >5.00% - 10.00% 32,587 5,858 51,975 17,181 6,602 17,328 — — 131,531 Greater than 10% — 53,404 12,131 13,368 12,456 15,066 — — 106,425 Construction and Land 0% - 5.00% 12,496 65,447 28,996 1,425 4,081 5,139 1,043 — 118,627 >5.00% - 10.00% — 7,462 45,561 — 3,785 71 — — 56,879 Greater than 10% — 3,577 59,440 52,370 4,398 21,167 — — 140,952 SBA secured by real estate 0% - 5.00% — 498 9,508 12,517 17,476 15,942 — — 55,941 >5.00% - 10.00% — — — — — — — — — Greater than 10% — — 102 — — 338 — — 440 Total investor loans secured by real estate 541,743 1,354,913 2,301,001 1,352,833 938,701 1,909,229 13,796 — 8,412,216 Business loans secured by real estate CRE owner-occupied 0% - 5.00% 108,753 274,558 358,652 251,081 274,570 588,999 8,946 — 1,865,559 >5.00% - 10.00% — 11,033 15,015 31,674 30,254 51,484 — — 139,460 Greater than 10% — — — 5,883 9,043 9,789 250 — 24,965 Franchise real estate secured 0% - 5.00% 23,192 36,483 69,701 58,245 80,716 36,800 — — 305,137 >5.00% - 10.00% — 7,588 3,218 7,280 1,103 16,037 — — 35,226 Greater than 10% — 442 — — — — — — 442 SBA secured by real estate 0% - 5.00% 510 3,237 7,517 11,357 11,448 21,384 — — 55,453 >5.00% - 10.00% — — 70 905 1,694 6,502 — — 9,171 Greater than 10% — — — 1,347 2,124 5,872 — — 9,343 Total business loans secured by real estate 132,455 333,341 454,173 367,772 410,952 736,867 9,196 — 2,444,756 Commercial Real Estate Term Loans by Vintage 2021 2020 2019 2018 2017 Prior Revolving Revolving Converted to Term During the Period Total March 31, 2021 (Dollars in thousands) Commercial Loans Commercial and industrial 0% - 5.00% 61,115 76,872 223,574 101,069 182,673 90,115 316,224 1,113 1,052,755 >5.00% - 10.00% 1,507 28,732 31,098 25,613 10,383 16,090 305,405 101 418,929 Greater than 10% — 8,575 20,849 21,862 2,997 11,807 117,839 485 184,414 Franchise non-real estate secured 0% - 5.00% 15,398 21,160 102,790 78,320 34,932 31,020 — — 283,620 >5.00% - 10.00% — 6,056 35,273 8,527 8,362 18,588 — — 76,806 Greater than 10% — — 9,100 5,762 18,397 3,995 1,361 — 38,615 SBA not secured by real estate 0% - 5.00% 72 422 2,212 1,021 1,299 3,230 — — 8,256 >5.00% - 10.00% — — — 490 1,518 1,102 — — 3,110 Greater than 10% — — 81 353 1,725 691 692 — 3,542 Total commercial loans $ 78,092 $ 141,817 $ 424,977 $ 243,017 $ 262,286 $ 176,638 $ 741,521 $ 1,699 $ 2,070,047 Commercial Real Estate Term Loans by Vintage 2020 2019 2018 2017 2016 Prior Revolving Revolving Converted to Term During the Period Total December 31, 2020 (Dollars in thousands) 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 Term Loans by Vintage 2020 2019 2018 2017 2016 Prior Revolving Revolving Converted to Term During the Period Total December 31, 2020 (Dollars in thousands) 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 value (“LTV”). The following tables summarize the amortized cost of loans in these segments by current estimated LTV and by year of origination as of the dates indicated: Term Loans by Vintage 2021 2020 2019 2018 2017 Prior Revolving Revolving Converted to Term During the Period Total March 31, 2021 (Dollars in thousands) Investor loans secured by real estate CRE non-owner-occupied 55% and below $ 64,538 $ 130,003 $ 213,339 $ 220,420 $ 130,687 $ 709,045 $ 10,779 — $ 1,478,811 >55-65% 31,752 116,313 197,381 105,577 130,405 266,760 548 — 848,736 >65-75% 27,935 25,685 97,297 153,854 13,411 44,463 — — 362,645 Greater than 75% — — 20,763 12,676 4,374 1,780 — — 39,593 Multifamily 55% and below 59,772 219,912 344,043 261,109 231,004 356,028 1,426 — 1,473,294 >55-65% 173,282 389,105 716,453 359,851 211,357 328,477 — — 2,178,525 >65-75% 169,340 396,911 553,451 162,499 185,854 155,480 — — 1,623,535 Greater than 75% 2,628 — 14,667 10,535 1,869 4,539 — — 34,238 Construction and land 55% and below 12,496 76,486 106,181 27,368 12,264 26,377 1,043 — 262,215 >55-65% — — 19,603 18,590 — — — — 38,193 >65-75% — — 8,213 7,837 — — — — 16,050 Greater than 75% — — — — — — — — — SBA secured by real estate 55% and below — — 102 645 669 1,088 — — 2,504 >55-65% — — 2,420 1,633 3,991 5,449 — — 13,493 >65-75% — — 3,888 4,641 3,477 6,619 — — 18,625 Greater than 75% — 498 3,200 5,598 9,339 3,124 — — 21,759 Total investor loans secured by real estate 541,743 1,354,913 2,301,001 1,352,833 938,701 1,909,229 13,796 — 8,412,216 Business loan secured by real estate CRE owner-occupied 55% and below 41,757 100,507 148,303 122,790 173,168 433,778 9,196 — 1,029,499 >55-65% 28,552 64,442 75,112 87,262 101,484 131,991 — — 488,843 >65-75% 17,278 71,694 143,725 72,734 25,938 63,635 — — 395,004 Greater than 75% 21,166 48,948 6,527 5,852 13,277 20,868 — — 116,638 Franchise real estate secured 55% and below 1,884 20,715 9,853 15,109 13,479 25,410 — — 86,450 >55-65% — 2,666 9,905 14,514 14,248 7,615 — — 48,948 >65-75% 11,298 15,452 42,286 17,909 14,740 16,607 — — 118,292 Greater than 75% 10,010 5,680 10,875 17,993 39,352 3,205 — — 87,115 SBA secured by real estate 55% and below 510 1,813 1,601 5,265 5,442 16,620 — — 31,251 >55-65% — 247 512 1,740 999 8,073 — — 11,571 >65-75% — 263 3,129 1,293 3,695 4,824 — — 13,204 Greater than 75% — 914 2,345 5,311 5,130 4,241 — — 17,941 Total business loans secured by real estate $ 132,455 $ 333,341 $ 454,173 $ 367,772 $ 410,952 $ 736,867 $ 9,196 $ — $ 2,444,756 Term Loans by Vintage 2020 2019 2018 2017 2016 Prior Revolving Revolving Converted to Term During the Period Total December 31, 2020 (Dollars in thousands) 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

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	3 Months Ended
Goodwill and Other Intangible Assets	Mar. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets The Company had goodwill of $900.2 million and $898.6 million at March 31, 2021 and December 31, 2020, respectively. The Company recorded adjustments to goodwill associated with the acquisition of Opus in the amount of $1.6 million during the three months ended March 31, 2021, within the one-year measurement period subsequent to the acquisition date of June 1, 2020. March 31, March 31, 2021 2020 (Dollars in thousands) Balance, beginning of year $ 898,569 $ 808,322 Purchase accounting adjustments 1,635 — Balance, end of year $ 900,204 $ 808,322 Accumulated impairment losses at end of year $ — $ — The amount of goodwill is subject to change, as the Company’s fair value estimates associated with the Opus acquisition are considered estimates and are subject to refinement for a period of one year after the closing date of the acquisition as additional information related to those fair value estimates becomes available and such information is considered final. 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 $81.4 million at March 31, 2021, consisting of $78.4 million in core deposit intangibles and $2.9 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 March 31, December 31, March 31, 2021 2020 2020 (Dollars in thousands) Gross amount of intangible assets: Beginning balance $ 145,212 $ 145,212 $ 125,945 Additions due to acquisitions — — — Ending balance 145,212 145,212 125,945 Accumulated amortization: Beginning balance (59,705) (55,200) (42,633) Amortization (4,143) (4,505) (3,963) Ending balance (63,848) (59,705) (46,596) Net intangible assets $ 81,364 $ 85,507 $ 79,349 six

Subordinated Debentures

Subordinated Debentures	3 Months Ended
Subordinated Debentures	Mar. 31, 2021
Debt Disclosure [Abstract]
Subordinated Debentures	Subordinated Debentures As of March 31, 2021, the Company had five issuances of subordinated notes and two issuances of junior subordinated debt securities, with an aggregate carrying value of $501.6 million and a weighted interest rate of 5.38%, compared 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: March 31, 2021 December 31, 2020 Stated Maturity Current Interest Rate Current Principal Balance Carrying Value (Dollars in thousands) Subordinated notes Subordinated notes due 2024, 5.75% per annum September 3, 2024 5.75 % $ 60,000 $ 59,581 $ 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 % 125,000 122,941 122,877 Subordinated notes due 2030, 5.375% per annum until June 15, 2025, 3-month SOFR +5.170% thereafter June 15, 2030 5.375 % 150,000 147,567 147,501 Subordinated notes due 2025, 7.125% per annum June 26, 2025 7.125 % 25,000 25,103 25,109 Subordinated notes due 2026, 5.50% per annum until June 30 2021, 3-month LIBOR +4.285% thereafter July 1, 2026 5.50 % 135,000 138,282 138,371 Total subordinated notes 495,000 493,474 493,410 Subordinated debt Heritage Oaks Capital Trust II (junior subordinated debt), 3-month LIBOR+1.72% January 1, 2037 1.96 % 5,248 4,138 4,121 Santa Lucia Bancorp (CA) Capital Trust (junior subordinated debt), 3-month LIBOR+1.48% July 7, 2036 1.72 % 5,155 3,999 3,980 Total subordinated debt 10,403 8,137 8,101 Total subordinated debentures $ 505,403 $ 501,611 $ 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 rating of A- and subordinated debt of BBB+ for the Bank. The Corporation’s and Bank’s ratings were reaffirmed in June 2020 by KBRA following the announcement of the consummated acquisition of Opus. As of March 31, 2021, the Corporation has two unconsolidated Delaware statutory trust subsidiaries, Heritage Oaks Capital Trust II and Santa Lucia Bancorp (CA) Capital Trust. Both are used as business trusts for the purpose of issuing trust preferred securities to third party investors. The junior subordinated debt was issued in connection with the trust preferred securities offerings. The Corporation is not allowed to consolidate any trust preferred securities into the Company’s consolidated financial statements. The resulting effect on the Company’s consolidated financial statements is to report the subordinated debentures as a component of the Company’s liabilities, and its ownership interest in the trusts as a component of other assets on the Company’s consolidated financial statements. 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, the trust preferred securities are included in Tier 2 capital at March 31, 2021. Provisions of the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010 require that if a depository institution holding company exceeds $15 billion in total consolidated assets due to an acquisition, then trust preferred securities are to be excluded from Tier 1 capital beginning in the period in which the transaction occurred. During the second quarter of 2020, the Company’s acquisition of Opus resulted in total consolidated assets exceeding $15 billion; accordingly, trust preferred securities are excluded from the Company’s Tier 1 capital. The Company and the Bank also has subordinated debt that qualifies as Tier 2 capital.

Earnings per Share

Earnings per Share	3 Months Ended
Earnings per Share	Mar. 31, 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 March 31, 2021 December 31, 2020 March 31, 2020 (Dollars in thousands, except per share data) Basic Net income $ 68,668 $ 67,136 $ 25,740 Less: Dividends and undistributed earnings allocated to participating securities (665) (629) (232) Net income allocated to common stockholders $ 68,003 $ 66,507 $ 25,508 Weighted average common shares outstanding 93,529,147 93,568,994 59,007,191 Basic earnings per common share $ 0.73 $ 0.71 $ 0.43 Diluted Net income allocated to common stockholders $ 68,003 $ 66,507 $ 25,508 Weighted average common shares outstanding 93,529,147 93,568,994 59,007,191 Diluted effect of share-based compensation 564,497 400,194 182,526 Weighted average diluted common shares 94,093,644 93,969,188 59,189,717 Diluted earnings per common share $ 0.72 $ 0.71 $ 0.43 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 months ended March 31, 2021, December 31, 2020, and March 31, 2020, there were no potential common shares that were anti-dilutive.

Fair Value of Financial Instrum

Fair Value of Financial Instruments	3 Months Ended
Fair Value of Financial Instruments	Mar. 31, 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 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: March 31, 2021 Fair Value Measurement Using Level 1 Level 2 Level 3 Total Fair Value (Dollars in thousands) Financial assets Investment securities available-for-sale: U.S. Treasury $ — $ 32,063 $ — $ 32,063 Agency — 663,159 — 663,159 Corporate — 357,834 — 357,834 Municipal bonds — 1,422,062 — 1,422,062 Collateralized mortgage obligations — 508,971 — 508,971 Mortgage-backed securities — 873,248 — 873,248 Total securities available-for-sale $ — $ 3,857,337 $ — $ 3,857,337 Derivative assets: Interest rate swaps $ — $ 5,326 $ — $ 5,326 Equity warrants — — 1,911 1,911 Total derivative assets $ — $ 5,326 $ 1,911 $ 7,237 Financial liabilities Derivative liabilities $ — $ 5,332 $ — $ 5,332 December 31, 2020 Fair Value Measurement Using Level 1 Level 2 Level 3 Total (Dollars in thousands) 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 March 31, 2021 (Dollars in thousands) Beginning Balance $ 1,914 Change in fair value (1) (3) Ending balance $ 1,911 ______________________________ (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 at the dates indicated. March 31, 2021 Range Fair Value Valuation Technique(s) Unobservable Input(s) Min Max Weighted Average (Dollars in thousands) Equity warrants $ 1,911 Black-Scholes Volatility 30.00% 0.16% 6.00% 35.00% 0.64% 16.00% 31.18% 0.27% 13.52% December 31, 2020 Range Fair Value Valuation Technique(s) Unobservable Input(s) Min Max Weighted Average (Dollars in thousands) 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 (impaired loans prior to adoption of ASC 326) – A loan is individually evaluated for expected credit losses when it is probable that payment of interest and principal will not be made in accordance with the contractual terms of the loan agreement. 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. Other Real Estate Owned – OREO is initially recorded at the fair value less estimated costs to sell at the date of transfer. This amount becomes the property’s new basis. Any fair value adjustments based on the property’s fair value less estimated costs to sell at the date of acquisition are charged to the allowance for credit losses. The fair value of individually evaluated loans and other real estate owned were determined using Level 3 assumptions, and represents individually evaluated loan and other real estate owned 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 March 31, 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 three months ended March 31, 2021. The following table presents our assets measured at fair value on a nonrecurring basis at the dates indicated. March 31, 2021 Level 1 Level 2 Level 3 Total (Dollars in thousands) Financial assets Collateral dependent loans $ — $ — $ 606 $ 606 December 31, 2020 Level 1 Level 2 Level 3 Total (Dollars in thousands) 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. March 31, 2021 Range Fair Value Valuation Technique(s) Unobservable Input(s) Min Max Weighted Average (Dollars in thousands) Investor loans secured by real estate SBA secured by real estate (1) 440 Fair value of collateral Collateral discount and cost to sell 10.00% 10.00% 10.00% Commercial loans Commercial and industrial 166 Fair value of collateral Collateral discount and cost to sell 75.00% 100.00% 75.00% Total individually evaluated loans $ 606 December 31, 2020 Range Fair Value Valuation Technique(s) Unobservable Input(s) Min Max Weighted Average (Dollars in thousands) 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 March 31, 2021 Carrying Level 1 Level 2 Level 3 Estimated (Dollars in thousands) Assets Cash and cash equivalents $ 1,554,668 $ 1,554,668 $ — $ — $ 1,554,668 Interest-bearing time deposits with financial institutions 2,708 2,708 — — 2,708 Investments held-to-maturity 21,931 — 23,004 — 23,004 Investment securities available-for-sale 3,857,337 — 3,857,337 — 3,857,337 Loans held for sale 7,311 — 7,702 — 7,702 Loans held for investment, net 13,117,392 — — 13,276,121 13,276,121 Derivative assets 7,237 — 5,326 1,911 7,237 Accrued interest receivable 65,098 65,098 — — 65,098 Liabilities Deposit accounts $ 16,740,007 $ 15,369,192 $ 1,373,363 $ — $ 16,742,555 FHLB advances 10,000 — 9,998 — 9,998 Subordinated debentures 501,611 — 542,721 — 542,721 Derivative liabilities 5,332 — 5,332 — 5,332 Accrued interest payable 7,097 7,097 — — 7,097 At December 31, 2020 Carrying Level 1 Level 2 Level 3 Estimated (Dollars in thousands) 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	3 Months Ended
Derivative Instruments	Mar. 31, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments	Derivative Instruments 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 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 March 31, 2021, the Company had over-the-counter derivative instruments and centrally-cleared derivative instruments with matched terms with an aggregate notional amount of $143.6 million and a fair value of $5.3 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 cash LIBOR 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 income statement 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 three months ended March 31, 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 March 31, 2021 and December 31, 2020 are free-standing derivatives and are not designated as hedging instruments. 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 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. The Company acquired equity warrant assets as a result of acquisition of the 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 March 31, 2021. The following tables summarize the Company's derivative instruments included in other assets and other liabilities in the consolidated statements of financial condition: March 31, 2021 Derivative Assets Derivative Liabilities Notional Fair Value Notional Fair Value (Dollars in thousands) Derivative instruments not designated as hedging instruments: Interest rate swaps contracts $ 143,577 $ 5,326 $ 143,577 $ 5,332 Equity warrants — 1,911 — — Total derivative instruments $ 143,577 $ 7,237 $ 143,577 $ 5,332 December 31, 2020 Derivative Assets Derivative Liabilities Notional Fair Value Notional Fair Value (Dollars in thousands) 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 derivative financial instruments in the consolidated statements of income. Three Months Ended Derivative Not Designated as Hedging Instruments: Location of Gain (Loss) Recognized in Income on Derivative Instruments March 31, 2021 March 31, 2020 (Dollars in thousands) Interest rate products Other income $ 7 $ — Other contracts Other income — 198 Equity warrants Other income (3) — Total $ 4 $ 198

Balance Sheet Offsetting

Balance Sheet Offsetting	3 Months Ended
Balance Sheet Offsetting	Mar. 31, 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 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 (Dollars in thousands) March 31, 2021 Derivative assets: Interest rate swaps $ 5,326 $ — $ 5,326 $ — $ — $ 5,326 Total $ 5,326 $ — $ 5,326 $ — $ — $ 5,326 Derivative liabilities: Interest rate swaps $ 5,332 $ — $ 5,332 $ — $ (5,332) $ — Total $ 5,332 $ — $ 5,332 $ — $ (5,332) $ — 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	3 Months Ended
Leases	Mar. 31, 2021
Leases [Abstract]
Leases	Leases The Company accounts for its leases in accordance with ASC 842 and 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 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 in 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. The following table presents the components of lease expense for the periods indicated: Three Months Ended March 31, 2021 December 31, 2020 March 31, 2020 (Dollars in thousands) Operating lease $ 5,012 $ 5,375 3,164 Short-term lease 507 607 527 Total lease expense $ 5,519 $ 5,982 $ 3,691 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 three months ended: March 31, 2021 December 31, 2020 (Dollars in thousands) Balance Sheet: Operating lease right of use assets $ 70,417 $ 76,090 Operating lease liabilities 79,441 85,556 Three Months Ended March 31, 2021 March 31, 2020 (Dollars in thousands) Cash Flows: Operating cash flows from operating leases $ 2,000 $ 2,257 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: 2021 2022 2023 2024 2025 Thereafter Total (Dollars in thousands) As of March 31, 2021 Operating leases $ 14,778 $ 18,682 $ 18,051 $ 16,076 $ 11,014 $ 13,039 $ 91,640 Short-term leases 180 7 — — — — 187 Total contractual base rents (1) $ 14,958 $ 18,689 $ 18,051 $ 16,076 $ 11,014 $ 13,039 $ 91,827 Total liability to make lease payments $ 79,441 Difference in undiscounted and discounted future lease payments $ 12,386 Weighted average discount rate 5.70 % Weighted average remaining lease term (years) 5.3 ______________________________ (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

Revenue Recognition	3 Months Ended
Revenue Recognition	Mar. 31, 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 March 31, 2021 December 31, 2020 March 31, 2020 Within Scope (1) Out of Scope (2) Within Scope (1) Out of Scope (2) Within Scope (1) Out of Scope (2) (Dollars in thousands) Noninterest income: Loan servicing income $ — $ 458 $ — $ 633 $ — $ 480 Service charges on deposit accounts 2,032 — 2,005 — 1,715 — Other service fee income 473 — 459 — 311 — Debit card interchange income 787 — 777 — 348 — Earnings on bank-owned life insurance — 2,233 — 2,240 — 1,336 Net gain from sales of loans — 361 — 328 — 771 Net gain from sales of investment securities — 4,046 — 5,002 — 7,760 Trust custodial account fees 7,222 — 7,296 — — — Escrow and exchange fees 1,526 — 1,257 — — — Other income 282 4,320 199 2,998 217 1,537 Total noninterest income $ 12,322 $ 11,418 $ 11,993 $ 11,201 $ 2,591 $ 11,884 ______________________________ (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 fee type that are within the scope of ASC 606 presented in the above tables 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 to perform maintenance and custodial services over their alternative IRA investments. Typically, such fees are billed and collected on a quarterly basis and recognized commensurate with completion of the performance obligations required under the contracts. At March 31, 2021, the Company had accrued fees receivable of approximately $5.9 million, which are included in other assets in the consolidated statements of financial position. Certain of these fees are collected annually from the customer in advance of the related performance obligation in accordance with the associated account agreement. Such fees are recorded as deferred revenue at the time of collection and recognized as revenue over the service period as services are performed and the performance obligations on behalf of the Company have been satisfied. At March 31, 2021, the balance of deferred revenue associated with these fees was $2.4 million. 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	3 Months Ended
Variable Interest Entities	Mar. 31, 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 March 31, 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 March 31, 2021 and December 31, 2020 that relate to variable interests in non-consolidated VIEs. March 31, 2021 December 31, 2020 Maximum Loss Assets Liabilities Maximum Loss Assets Liabilities (Dollars in thousands) Multifamily loan securitization: Investment securities (1) $ 98,863 $ 98,863 $ — $ 100,927 $ 100,927 $ — Reimbursement obligation (2) 50,901 — 448 50,901 — 448 Affordable housing partnership: Other investments (3) 71,637 86,448 — 71,681 89,759 — Unfunded equity commitments (2) — — 14,811 — — 18,078 Total $ 221,401 $ 185,311 $ 15,259 $ 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 March 31, 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 March 31, 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 March 31, 2021 and December 31, 2020, respectively. Trust preferred securities The Company accounts 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 are 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 is 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 are subject to mandatory redemption, in whole or in part, upon repayment of the subordinated debt. The Company has entered into agreements which, taken collectively, fully and unconditionally guarantee the capital securities subject to the terms of each of the guarantees. The capital securities held by the capital trust qualify as Tier 2 capital. See Note 9 - Subordinated Debentures for additional information.

Subsequent Events

Subsequent Events	3 Months Ended
Subsequent Events	Mar. 31, 2021
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events Quarterly Cash Dividend On April 23, 2021, the Corporation’s Board of Directors declared a cash dividend of $0.33 per share, payable on May 14, 2021 to shareholders of record on May 7, 2021. Redemption of Subordinated Notes On April 15, 2021, the Company redeemed all three subordinated notes totaling $25.0 million that the Company assumed as part of the acquisition of Plaza Bancorp, Inc. in 2017. Prior to redemption, the subordinated notes carried a fixed interest rate of 7.125% and were scheduled to mature on June 26, 2025. The subordinated notes securities 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 $103,000 fair value mark related to purchase accounting adjustments.

Significant Accounting Polici_2

Significant Accounting Policies (Policies)	3 Months Ended
Significant Accounting Policies (Policies)	Mar. 31, 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 that are necessary for a fair presentation of the results for the interim periods presented. The results of operations for the three months ended March 31, 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	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 include 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 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 to the expedients and exceptions in Topic 848 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 does not currently engage in hedging related transactions, and as such, the amendments included in this Update have not had an impact on the Company’s consolidated financial statements. 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. 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. 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 March 31, 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.
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 liability or 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 March 31, 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. 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.
Allowance for Credit Losses on Investment Securities	Allowance for Credit Losses 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. For available-for-sale investment securities, the Company performs a quarterly qualitative evaluation for 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, while credit losses on held-to-maturity securities are measured on a collective basis according to shared risk characteristics. Credit losses on held-to-maturity securities are only recognized at the individual security level when the Company determines a security no longer possesses risk characteristics similar to others in the portfolio. 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 collectable. Accrued interest receivable for investment securities is included in accrued interest receivable balances in the consolidated statements of financial condition.
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 and costs is discontinued for loans placed on nonaccrual. Any remaining discounts, premiums, deferred 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. 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 efforts on single homes and small infill 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. 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 includes revolving lines or 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. 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, we have acquired first lien single family loans 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 for banking clients only, 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. Loans acquired through a purchase or a business combination are recorded at their fair value at the acquisition date. The Company performs an assessment of acquired loans to first 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. For loans that have not experienced more than insignificant deterioration in credit quality since origination, referred to as non-PCD loans, the Company records such loans at fair value, 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. Acquired loans that are classified as PCD are acquired at fair value, which includes any resulting discounts or premiums. Discounts and premiums are accreted or amortized into interest income over the remaining life of the loan using the interest method. 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. 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. Subsequent to acquisition, the ACL for both non-PCD and PCD loans are determined with the use of the Company’s ACL methodology in the same manner as all other loans.
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 expected 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 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 expected cash flows beyond a period deemed reasonable and supportable. The Company forecasts economic conditions and expected credit losses over a two-year time horizon before reverting to long-term average loss rates. 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 represents the amount by which the loan’s amortized cost exceeds the net present value of a loan’s discounted cash flows. 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. 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 backtesting, 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 allowance based on judgments different from those of management.
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, the loan has performed under the modified terms of the loan agreement for a period of at least six months, and the ultimate collectability of all contractual amounts due under the modified terms of the loan agreement 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 fair value of the collateral less cost 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 qualifying loan modifications. For such 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
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.
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 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 (impaired loans prior to adoption of ASC 326) – A loan is individually evaluated for expected credit losses when it is probable that payment of interest and principal will not be made in accordance with the contractual terms of the loan agreement. 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. Other Real Estate Owned – OREO is initially recorded at the fair value less estimated costs to sell at the date of transfer. This amount becomes the property’s new basis. Any fair value adjustments based on the property’s fair value less estimated costs to sell at the date of acquisition are charged to the allowance for credit losses. The fair value of individually evaluated loans and other real estate owned were determined using Level 3 assumptions, and represents individually evaluated loan and other real estate owned 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)	3 Months Ended
Acquisitions (Tables)	Mar. 31, 2021
Business Combinations [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. May 29, 2020 Merger consideration (Dollars in thousands) 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: Identifiable net assets acquired, at fair value June 1, 2020 (Dollars in thousands) 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 44,835 Other assets 368,837 Total assets acquired $ 8,010,399 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 identifiable net assets 657,723 Total merger consideration 749,605 Goodwill recognized $ 91,882
Summary of pro forma financial information	The following table presents certain unaudited pro forma financial information for illustrative purposes only, for the three months ended March 31, 2021 and 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 March 31, 2021 March 31, 2020 (Dollar in thousands, except per share data) Net interest and other income $ 185,392 $ 197,117 Net income 68,668 43,128 Basic earnings per share 0.73 0.47 Diluted earnings per share 0.72 0.47

Investment Securities (Tables)

Investment Securities (Tables)	3 Months Ended
Investment Securities (Tables)	Mar. 31, 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 securities were as follows: March 31, 2021 Amortized Gross Unrealized Gross Unrealized Estimated (Dollars in thousands) Investment securities available-for-sale: U.S. Treasury $ 30,144 $ 1,919 $ — $ 32,063 Agency 660,582 12,956 (10,379) 663,159 Corporate 360,617 2,128 (4,911) 357,834 Municipal bonds 1,432,169 22,287 (32,394) 1,422,062 Collateralized mortgage obligations 514,250 431 (5,710) 508,971 Mortgage-backed securities 880,903 9,309 (16,964) 873,248 Total investment securities available-for-sale 3,878,665 49,030 (70,358) 3,857,337 Investment securities held-to-maturity: Mortgage-backed securities 20,353 1,073 — 21,426 Other 1,578 — — 1,578 Total investment securities held-to-maturity 21,931 1,073 — 23,004 Total investment securities $ 3,900,596 $ 50,103 $ (70,358) $ 3,880,341 December 31, 2020 Amortized Gross Unrealized Gross Unrealized Estimated (Dollars in thousands) Investment securities available-for-sale: 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 Investment securities held-to-maturity: Mortgage-backed securities 22,124 1,281 — 23,405 Other 1,608 — — 1,608 Total investment securities held-to-maturity 23,732 1,281 — 25,013 Total investment securities $ 3,870,465 $ 91,285 $ (5,622) $ 3,956,128
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 shows the 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. March 31, 2021 Less than 12 Months 12 Months or Longer Total Number Fair Gross Number Fair Gross Number Fair Gross (Dollars in thousands) Investment securities available-for-sale: Agency 28 $ 389,387 $ (10,094) 9 $ 9,947 $ (285) 37 $ 399,334 $ (10,379) Corporate 18 152,134 (4,911) — — — 18 152,134 (4,911) Municipal bonds 173 921,332 (32,394) — — — 173 921,332 (32,394) Collateralized mortgage obligations 32 309,975 (5,708) 1 388 (2) 33 310,363 (5,710) Mortgage-backed securities. 70 671,400 (16,964) — — — 70 671,400 (16,964) Total investment securities available-for-sale 321 $ 2,444,228 $ (70,071) 10 $ 10,335 $ (287) 331 $ 2,454,563 $ (70,358) December 31, 2020 Less than 12 Months 12 Months or Longer Total Number Fair Gross Number Fair Gross Number Fair Gross (Dollars in thousands) 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 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 March 31, 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 Amortized Fair Amortized Fair Amortized Fair Amortized Fair Amortized Fair (Dollars in thousands) Investment securities available-for-sale: U.S. Treasury $ — $ — $ 30,144 $ 32,063 $ — $ — $ — $ — $ 30,144 $ 32,063 Agency — — 322,038 325,584 251,286 252,084 87,258 85,491 660,582 663,159 Corporate 94,711 94,917 9,683 9,645 218,847 218,536 37,376 34,736 360,617 357,834 Municipal bonds 11,286 11,286 4,622 4,912 36,182 38,652 1,380,079 1,367,212 1,432,169 1,422,062 Collateralized mortgage obligations — — 27,394 27,373 211,472 207,662 275,384 273,936 514,250 508,971 Mortgage-backed securities — — 2,144 2,283 190,923 195,067 687,836 675,898 880,903 873,248 Total investment securities available-for-sale 105,997 106,203 396,025 401,860 908,710 912,001 2,467,933 2,437,273 3,878,665 3,857,337 Investment securities held-to-maturity: Mortgage-backed securities — — — — — — 20,353 21,426 20,353 21,426 Other — — — — — — 1,578 1,578 1,578 1,578 Total investment securities held-to-maturity — — — — — — 21,931 23,004 21,931 23,004 Total investment securities $ 105,997 $ 106,203 $ 396,025 $ 401,860 $ 908,710 $ 912,001 $ 2,489,864 $ 2,460,277 $ 3,900,596 $ 3,880,341
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 March 31, 2021: Vintage 2021 2020 2019 2018 2017 Prior Total (Dollars in thousands) Investment securities available-for-sale: U.S. Treasury Aaa - Aa3 $ — $ — $ — $ 21,510 $ 10,553 $ — $ 32,063 Agency Aaa - Aa3 — 352,414 73,090 151,364 9,075 77,216 663,159 Corporate debt A1 - A3 — 56,760 — — — 93,295 150,055 Baa1 - Baa3 — 98,707 69,231 — 17,919 21,922 207,779 Municipal bonds Aaa - Aa3 11,286 994,512 285,174 32,304 59,458 35,689 1,418,423 A1 - A3 — — — — — 2,313 2,313 Baa1 - Baa3 — — — — — 1,326 1,326 Collateralized mortgage obligations Aaa - Aa3 17,334 241,843 93,697 25,311 14,634 116,152 508,971 Mortgage-backed securities Aaa - Aa3 185,205 458,327 109,257 13,155 47,529 59,775 873,248 Total investment securities available-for-sale 213,825 2,202,563 630,449 243,644 159,168 407,688 3,857,337 Investment securities held-to-maturity: Mortgage-backed securities Aaa - Aa3 — — — 5,822 5,186 9,345 20,353 Other Baa1 - Baa3 — — — 617 — 961 1,578 Total investment securities held-to-maturity — — — 6,439 5,186 10,306 21,931 Total investment securities $ 213,825 $ 2,202,563 $ 630,449 $ 250,083 $ 164,354 $ 417,994 $ 3,879,268

Loans Held for Investment (Tabl

Loans Held for Investment (Tables)	3 Months Ended
Loans Held for Investment (Tables)	Mar. 31, 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: March 31, December 31, 2021 2020 (Dollars in thousands) Investor loans secured by real estate CRE non-owner-occupied $ 2,729,785 $ 2,675,085 Multifamily 5,309,592 5,171,356 Construction and land 316,458 321,993 SBA secured by real estate 56,381 57,331 Total investor loans secured by real estate 8,412,216 8,225,765 Business loans secured by real estate CRE owner-occupied 2,029,984 2,114,050 Franchise real estate secured 340,805 347,932 SBA secured by real estate 73,967 79,595 Total business loans secured by real estate 2,444,756 2,541,577 Commercial loans Commercial and industrial 1,656,098 1,768,834 Franchise non-real estate secured 399,041 444,797 SBA non-real estate secured 14,908 15,957 Total commercial loans 2,070,047 2,229,588 Retail loans Single family residential 184,049 232,574 Consumer 6,324 6,929 Total retail loans 190,373 239,503 Gross loans held for investment (1) 13,117,392 13,236,433 Allowance for credit losses for loans held for investment (266,999) (268,018) Loans held for investment, net $ 12,850,393 $ 12,968,415 Loans held for sale, at lower of cost or fair value $ 7,311 $ 601 ______________________________ (1) Includes unaccreted fair value net purchase discounts of $103.9 million and $113.8 million as of March 31, 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 March 31, 2021: Term Loans by Vintage 2021 2020 2019 2018 2017 Prior Revolving Revolving Converted to Term During the Period Total March 31, 2021 (Dollars in thousands) Investor loans secured by real estate CRE non-owner-occupied Pass $ 124,225 $ 272,001 $ 501,036 $ 482,052 $ 278,439 $ 972,783 $ 10,779 $ — $ 2,641,315 Special mention — — 2,004 8,619 438 43,694 — — 54,755 Substandard — — 25,740 1,856 — 5,571 548 — 33,715 Multifamily Pass 405,022 1,005,928 1,626,859 791,365 629,525 834,458 1,426 — 5,294,583 Special mention — — 1,755 2,629 — 9,294 — — 13,678 Substandard — — — — 559 772 — — 1,331 Construction and land Pass 12,496 76,486 133,997 53,795 12,264 26,377 1,043 — 316,458 SBA secured by real estate Pass — — 7,409 8,991 15,383 12,485 — — 44,268 Special mention — 498 1,033 1,161 1,002 1,124 — — 4,818 Substandard — — 1,168 2,365 1,091 2,671 — — 7,295 Total investor loans secured by real estate 541,743 1,354,913 2,301,001 1,352,833 938,701 1,909,229 13,796 — 8,412,216 Business loans secured by real estate CRE owner-occupied Pass 108,753 283,401 373,667 280,703 304,938 638,844 8,946 — 1,999,252 Special mention — 2,190 — 3,792 3,045 4,319 — — 13,346 Substandard — — — 4,143 5,884 7,109 250 — 17,386 Franchise real estate secured Pass 23,192 43,635 71,269 62,905 81,819 52,837 — — 335,657 Special mention — 878 1,650 2,620 — — — — 5,148 SBA secured by real estate Pass 510 3,237 7,587 12,262 13,155 27,937 — — 64,688 Special mention — — — 1,186 — 1,175 — — 2,361 Substandard — — — 161 2,111 4,646 — — 6,918 Total loans secured by business real estate 132,455 333,341 454,173 367,772 410,952 736,867 9,196 — 2,444,756 Term Loans by Vintage 2021 2020 2019 2018 2017 Prior Revolving Revolving Converted to Term During the Period Total March 31, 2021 (Dollars in thousands) Commercial Loans Commercial and industrial Pass 62,622 112,135 272,585 142,706 195,658 112,930 694,022 1,699 1,594,357 Special mention — 655 — 2,219 177 1,460 16,377 — 20,888 Substandard — 1,389 2,936 3,619 218 3,622 29,069 — 40,853 Franchise non-real estate secured Pass 15,398 27,216 138,064 86,988 43,294 50,126 1,361 — 362,447 Special mention — — 7,028 1,984 216 2,605 — — 11,833 Substandard — — 2,071 3,637 18,181 872 — — 24,761 SBA non-real estate secured Pass 72 422 2,212 1,511 2,816 4,337 — — 11,370 Special mention — — — — 1,456 — — — 1,456 Substandard — — 81 353 270 686 692 — 2,082 Total commercial loans 78,092 141,817 424,977 243,017 262,286 176,638 741,521 1,699 2,070,047 Retail Loans Single family residential Pass 6,582 7,624 4,349 10,708 11,169 120,675 22,662 — 183,769 Substandard — — — — — 280 — — 280 Consumer loans Pass 2 47 101 35 22 3,998 2,073 — 6,278 Substandard — — 7 — — 39 — — 46 Total retail loans 6,584 7,671 4,457 10,743 11,191 124,992 24,735 — 190,373 Totals gross loans $ 758,874 $ 1,837,742 $ 3,184,608 $ 1,974,365 $ 1,623,130 $ 2,947,726 $ 789,248 $ 1,699 $ 13,117,392 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 2020 2019 2018 2017 2016 Prior Revolving Revolving Converted to Term During the Period Total December 31, 2020 (Dollars in thousands) 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 2020 2019 2018 2017 2016 Prior Revolving Revolving Converted to Term During the Period Total December 31, 2020 (Dollars in thousands) 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 Term Loans by Vintage 2021 2020 2019 2018 2017 Prior Revolving Revolving Converted to Term During the Period Total March 31, 2021 (Dollars in thousands) Investor loans secured by real estate CRE non-owner-occupied 0% - 5.00% $ 124,225 $ 244,225 $ 447,464 $ 445,435 $ 223,077 $ 927,154 $ 10,779 $ — $ 2,422,359 >5.00% - 10.00% — 25,477 9,581 14,151 12,408 73,255 — — 134,872 Greater than 10% — 2,299 71,735 32,941 43,392 21,639 548 — 172,554 Multifamily 0% - 5.00% 372,435 946,666 1,564,508 763,445 611,026 812,130 1,426 — 5,071,636 >5.00% - 10.00% 32,587 5,858 51,975 17,181 6,602 17,328 — — 131,531 Greater than 10% — 53,404 12,131 13,368 12,456 15,066 — — 106,425 Construction and Land 0% - 5.00% 12,496 65,447 28,996 1,425 4,081 5,139 1,043 — 118,627 >5.00% - 10.00% — 7,462 45,561 — 3,785 71 — — 56,879 Greater than 10% — 3,577 59,440 52,370 4,398 21,167 — — 140,952 SBA secured by real estate 0% - 5.00% — 498 9,508 12,517 17,476 15,942 — — 55,941 >5.00% - 10.00% — — — — — — — — — Greater than 10% — — 102 — — 338 — — 440 Total investor loans secured by real estate 541,743 1,354,913 2,301,001 1,352,833 938,701 1,909,229 13,796 — 8,412,216 Business loans secured by real estate CRE owner-occupied 0% - 5.00% 108,753 274,558 358,652 251,081 274,570 588,999 8,946 — 1,865,559 >5.00% - 10.00% — 11,033 15,015 31,674 30,254 51,484 — — 139,460 Greater than 10% — — — 5,883 9,043 9,789 250 — 24,965 Franchise real estate secured 0% - 5.00% 23,192 36,483 69,701 58,245 80,716 36,800 — — 305,137 >5.00% - 10.00% — 7,588 3,218 7,280 1,103 16,037 — — 35,226 Greater than 10% — 442 — — — — — — 442 SBA secured by real estate 0% - 5.00% 510 3,237 7,517 11,357 11,448 21,384 — — 55,453 >5.00% - 10.00% — — 70 905 1,694 6,502 — — 9,171 Greater than 10% — — — 1,347 2,124 5,872 — — 9,343 Total business loans secured by real estate 132,455 333,341 454,173 367,772 410,952 736,867 9,196 — 2,444,756 Commercial Real Estate Term Loans by Vintage 2021 2020 2019 2018 2017 Prior Revolving Revolving Converted to Term During the Period Total March 31, 2021 (Dollars in thousands) Commercial Loans Commercial and industrial 0% - 5.00% 61,115 76,872 223,574 101,069 182,673 90,115 316,224 1,113 1,052,755 >5.00% - 10.00% 1,507 28,732 31,098 25,613 10,383 16,090 305,405 101 418,929 Greater than 10% — 8,575 20,849 21,862 2,997 11,807 117,839 485 184,414 Franchise non-real estate secured 0% - 5.00% 15,398 21,160 102,790 78,320 34,932 31,020 — — 283,620 >5.00% - 10.00% — 6,056 35,273 8,527 8,362 18,588 — — 76,806 Greater than 10% — — 9,100 5,762 18,397 3,995 1,361 — 38,615 SBA not secured by real estate 0% - 5.00% 72 422 2,212 1,021 1,299 3,230 — — 8,256 >5.00% - 10.00% — — — 490 1,518 1,102 — — 3,110 Greater than 10% — — 81 353 1,725 691 692 — 3,542 Total commercial loans $ 78,092 $ 141,817 $ 424,977 $ 243,017 $ 262,286 $ 176,638 $ 741,521 $ 1,699 $ 2,070,047 Commercial Real Estate Term Loans by Vintage 2020 2019 2018 2017 2016 Prior Revolving Revolving Converted to Term During the Period Total December 31, 2020 (Dollars in thousands) 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 Term Loans by Vintage 2020 2019 2018 2017 2016 Prior Revolving Revolving Converted to Term During the Period Total December 31, 2020 (Dollars in thousands) 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 Vintage 2021 2020 2019 2018 2017 Prior Revolving Revolving Converted to Term During the Period Total March 31, 2021 (Dollars in thousands) Investor loans secured by real estate CRE non-owner-occupied 55% and below $ 64,538 $ 130,003 $ 213,339 $ 220,420 $ 130,687 $ 709,045 $ 10,779 — $ 1,478,811 >55-65% 31,752 116,313 197,381 105,577 130,405 266,760 548 — 848,736 >65-75% 27,935 25,685 97,297 153,854 13,411 44,463 — — 362,645 Greater than 75% — — 20,763 12,676 4,374 1,780 — — 39,593 Multifamily 55% and below 59,772 219,912 344,043 261,109 231,004 356,028 1,426 — 1,473,294 >55-65% 173,282 389,105 716,453 359,851 211,357 328,477 — — 2,178,525 >65-75% 169,340 396,911 553,451 162,499 185,854 155,480 — — 1,623,535 Greater than 75% 2,628 — 14,667 10,535 1,869 4,539 — — 34,238 Construction and land 55% and below 12,496 76,486 106,181 27,368 12,264 26,377 1,043 — 262,215 >55-65% — — 19,603 18,590 — — — — 38,193 >65-75% — — 8,213 7,837 — — — — 16,050 Greater than 75% — — — — — — — — — SBA secured by real estate 55% and below — — 102 645 669 1,088 — — 2,504 >55-65% — — 2,420 1,633 3,991 5,449 — — 13,493 >65-75% — — 3,888 4,641 3,477 6,619 — — 18,625 Greater than 75% — 498 3,200 5,598 9,339 3,124 — — 21,759 Total investor loans secured by real estate 541,743 1,354,913 2,301,001 1,352,833 938,701 1,909,229 13,796 — 8,412,216 Business loan secured by real estate CRE owner-occupied 55% and below 41,757 100,507 148,303 122,790 173,168 433,778 9,196 — 1,029,499 >55-65% 28,552 64,442 75,112 87,262 101,484 131,991 — — 488,843 >65-75% 17,278 71,694 143,725 72,734 25,938 63,635 — — 395,004 Greater than 75% 21,166 48,948 6,527 5,852 13,277 20,868 — — 116,638 Franchise real estate secured 55% and below 1,884 20,715 9,853 15,109 13,479 25,410 — — 86,450 >55-65% — 2,666 9,905 14,514 14,248 7,615 — — 48,948 >65-75% 11,298 15,452 42,286 17,909 14,740 16,607 — — 118,292 Greater than 75% 10,010 5,680 10,875 17,993 39,352 3,205 — — 87,115 SBA secured by real estate 55% and below 510 1,813 1,601 5,265 5,442 16,620 — — 31,251 >55-65% — 247 512 1,740 999 8,073 — — 11,571 >65-75% — 263 3,129 1,293 3,695 4,824 — — 13,204 Greater than 75% — 914 2,345 5,311 5,130 4,241 — — 17,941 Total business loans secured by real estate $ 132,455 $ 333,341 $ 454,173 $ 367,772 $ 410,952 $ 736,867 $ 9,196 $ — $ 2,444,756 Term Loans by Vintage 2020 2019 2018 2017 2016 Prior Revolving Revolving Converted to Term During the Period Total December 31, 2020 (Dollars in thousands) 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 Vintage 2021 2020 2019 2018 2017 Prior Revolving Revolving Converted to Term During the Period Total (Dollars in thousands) March 31, 2021 Retail Loans Single family residential Greater than 740 $ 6,582 $ 7,624 $ 3,480 $ 10,341 $ 6,559 $ 78,694 $ 15,850 — $ 129,130 >680 - 740 — — 869 367 4,119 14,654 5,915 — 25,924 >580 - 680 — — — — 491 9,561 863 — 10,915 Less than 580 — — — — — 18,046 34 — 18,080 Consumer loans Greater than 740 2 47 63 30 19 3,476 531 — 4,168 >680 - 740 — — 32 5 3 459 1,461 — 1,960 >580 - 680 — — 13 — — 90 57 — 160 Less than 580 — — — — — 12 24 — 36 Total retail loans $ 6,584 $ 7,671 $ 4,457 $ 10,743 $ 11,191 $ 124,992 $ 24,735 $ — $ 190,373 Term Loans by Vintage 2020 2019 2018 2017 2016 Prior Revolving Revolving Converted to Term During the Period Total (Dollars in thousands) 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 Current 30-59 60-89 90+ Total (Dollars in thousands) March 31, 2021 Investor loans secured by real estate CRE non-owner-occupied $ 2,719,494 $ 9,743 $ — $ 548 $ 2,729,785 Multifamily 5,309,592 — — — 5,309,592 Construction and land 316,458 — — — 316,458 SBA secured by real estate 55,941 — — 440 56,381 Total investor loans secured by real estate 8,401,485 9,743 — 988 8,412,216 Business loans secured by real estate CRE owner-occupied 2,024,680 — — 5,304 2,029,984 Franchise real estate secured 340,805 — — — 340,805 SBA secured by real estate 73,307 — — 660 73,967 Total business loans secured by real estate 2,438,792 — — 5,964 2,444,756 Commercial loans Commercial and industrial 1,651,203 3,068 61 1,766 1,656,098 Franchise non-real estate secured 399,041 — — — 399,041 SBA not secured by real estate 13,911 305 — 692 14,908 Total commercial loans 2,064,155 3,373 61 2,458 2,070,047 Retail loans Single family residential 184,049 — — — 184,049 Consumer loans 6,324 — — — 6,324 Total retail loans 190,373 — — — 190,373 Totals $ 13,094,805 $ 13,116 $ 61 $ 9,410 $ 13,117,392 Days Past Due Current 30-59 60-89 90+ Total Gross Loans (Dollars in thousands) 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 loans $ 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) Collateral Dependent Loans ACL Non-Collateral Dependent Loans ACL Total Nonaccrual Loans Nonaccrual Loans with No ACL (Dollars in thousands) March 31, 2021 Investor loans secured by real estate CRE non-owner-occupied $ 12,284 $ — $ — $ — $ 12,284 $ 12,284 SBA secured by real estate 440 — — — 440 440 Total investor loans secured by real estate 12,724 — — — 12,724 12,724 Business loans secured by real estate CRE owner-occupied 6,060 — — — 6,060 6,060 SBA secured by real estate 727 — — — 727 727 Total business loans secured by real estate 6,787 — — — 6,787 6,787 Commercial loans Commercial and industrial 1,767 — 3,843 688 5,610 2,132 Franchise non-real estate secured — — 13,082 — 13,082 13,082 SBA non-real estate secured 692 — — — 692 692 Total commercial loans 2,459 — 16,925 688 19,384 15,906 Retail loans Single family residential 14 — — — 14 14 Total retail loans 14 — — — 14 14 Totals nonaccrual loans $ 21,984 $ — $ 16,925 $ 688 $ 38,909 $ 35,431 ______________________________ (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) Collateral Dependent Loans ACL Non-Collateral Dependent Loans ACL Total Nonaccrual Loans Nonaccrual Loans with No ACL (Dollars in thousands) 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 Totals 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: March 31, 2021 Office Properties Industrial Properties Retail Properties Land Properties Hotel Properties Residential Properties Business Assets Total (Dollars in thousands) Investor loan secured by real estate CRE non-owner-occupied $ — $ — $ 2,542 $ — $ 9,742 $ — $ — $ 12,284 SBA secured by real estate — — — — 440 — — 440 Total investor loans secured by real estate — — 2,542 — 10,182 — — 12,724 Business loans secured by real estate CRE owner-occupied — 756 — 5,304 — — — 6,060 SBA secured by real estate 270 457 — — — — — 727 Total business loans secured by real estate 270 1,213 — 5,304 — — — 6,787 Commercial loans Commercial and industrial — — — — — — 1,767 1,767 SBA non-real estate secured — — — — — — 692 692 Total commercial loans — — — — — — 2,459 2,459 Retail loans Single family residential — — — — — 14 — 14 Total retail loans — — — — — 14 — 14 Totals collateral dependent loans $ 270 $ 1,213 $ 2,542 $ 5,304 $ 10,182 $ 14 $ 2,459 $ 21,984 December 31, 2020 Office Properties Industrial Properties Retail Properties Land Properties Hotel Properties Residential Properties Business Assets Total (Dollars in thousands) 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 Totals 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)	3 Months Ended
Allowance for Credit Losses (Tables)	Mar. 31, 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 March 31, 2021 Beginning ACL Balance Charge-offs Recoveries Provision for Credit Losses Ending (Dollars in thousands) Investor loans secured by real estate CRE non-owner occupied $ 49,176 $ (154) $ — $ (3,477) $ 45,545 Multifamily 62,534 — — 17,281 79,815 Construction and land 12,435 — — 828 13,263 SBA secured by real estate 5,159 (265) — 247 5,141 Business loans secured by real estate CRE owner-occupied 50,517 — 15 (8,938) 41,594 Franchise real estate secured 11,451 — — (575) 10,876 SBA secured by real estate 6,567 (98) — (18) 6,451 Commercial loans Commercial and industrial 46,964 (1,279) 601 (2,913) 43,373 Franchise non-real estate secured 20,525 (156) — (1,466) 18,903 SBA non-real estate secured 995 — 2 (107) 890 Retail loans Single family residential 1,204 — — (382) 822 Consumer loans 491 — — (165) 326 Totals $ 268,018 $ (1,952) $ 618 $ 315 $ 266,999 Three Months Ended March 31, 2020 Beginning ACL Balance (1) Adoption of ASC 326 Charge-offs Recoveries Provision for Credit Losses Ending (Dollars in thousands) Investor loans secured by real estate CRE non-owner occupied $ 1,899 $ 8,423 $ (387) $ — $ 5,961 $ 15,896 Multifamily 729 9,174 — — 4,819 14,722 Construction and land 4,484 (124) — — 4,862 9,222 SBA secured by real estate 1,915 (1,401) — — 421 935 Business loans secured by real estate CRE owner-occupied 2,781 20,166 — 12 3,834 26,793 Franchise real estate secured 592 5,199 — — 1,712 7,503 SBA secured by real estate 2,119 2,207 (315) 71 (38) 4,044 Commercial loans Commercial and industrial 13,857 87 (490) 5 2,283 15,742 Franchise non-real estate secured 5,816 9,214 — — 1,586 16,616 SBA non-real estate secured 445 218 (236) 4 85 516 Retail loans Single family residential 655 541 — — (59) 1,137 Consumer loans 406 1,982 (8) — (84) 2,296 Totals $ 35,698 $ 55,686 $ (1,436) $ 92 $ 25,382 $ 115,422 (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 ending ACL balance is reflective of current expected credit losses, accounted for under ASC 326.
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 March 31, 2021: Term Loans by Vintage 2021 2020 2019 2018 2017 Prior Revolving Revolving Converted to Term During the Period Total March 31, 2021 (Dollars in thousands) Investor loans secured by real estate CRE non-owner-occupied Pass $ 124,225 $ 272,001 $ 501,036 $ 482,052 $ 278,439 $ 972,783 $ 10,779 $ — $ 2,641,315 Special mention — — 2,004 8,619 438 43,694 — — 54,755 Substandard — — 25,740 1,856 — 5,571 548 — 33,715 Multifamily Pass 405,022 1,005,928 1,626,859 791,365 629,525 834,458 1,426 — 5,294,583 Special mention — — 1,755 2,629 — 9,294 — — 13,678 Substandard — — — — 559 772 — — 1,331 Construction and land Pass 12,496 76,486 133,997 53,795 12,264 26,377 1,043 — 316,458 SBA secured by real estate Pass — — 7,409 8,991 15,383 12,485 — — 44,268 Special mention — 498 1,033 1,161 1,002 1,124 — — 4,818 Substandard — — 1,168 2,365 1,091 2,671 — — 7,295 Total investor loans secured by real estate 541,743 1,354,913 2,301,001 1,352,833 938,701 1,909,229 13,796 — 8,412,216 Business loans secured by real estate CRE owner-occupied Pass 108,753 283,401 373,667 280,703 304,938 638,844 8,946 — 1,999,252 Special mention — 2,190 — 3,792 3,045 4,319 — — 13,346 Substandard — — — 4,143 5,884 7,109 250 — 17,386 Franchise real estate secured Pass 23,192 43,635 71,269 62,905 81,819 52,837 — — 335,657 Special mention — 878 1,650 2,620 — — — — 5,148 SBA secured by real estate Pass 510 3,237 7,587 12,262 13,155 27,937 — — 64,688 Special mention — — — 1,186 — 1,175 — — 2,361 Substandard — — — 161 2,111 4,646 — — 6,918 Total loans secured by business real estate 132,455 333,341 454,173 367,772 410,952 736,867 9,196 — 2,444,756 Term Loans by Vintage 2021 2020 2019 2018 2017 Prior Revolving Revolving Converted to Term During the Period Total March 31, 2021 (Dollars in thousands) Commercial Loans Commercial and industrial Pass 62,622 112,135 272,585 142,706 195,658 112,930 694,022 1,699 1,594,357 Special mention — 655 — 2,219 177 1,460 16,377 — 20,888 Substandard — 1,389 2,936 3,619 218 3,622 29,069 — 40,853 Franchise non-real estate secured Pass 15,398 27,216 138,064 86,988 43,294 50,126 1,361 — 362,447 Special mention — — 7,028 1,984 216 2,605 — — 11,833 Substandard — — 2,071 3,637 18,181 872 — — 24,761 SBA non-real estate secured Pass 72 422 2,212 1,511 2,816 4,337 — — 11,370 Special mention — — — — 1,456 — — — 1,456 Substandard — — 81 353 270 686 692 — 2,082 Total commercial loans 78,092 141,817 424,977 243,017 262,286 176,638 741,521 1,699 2,070,047 Retail Loans Single family residential Pass 6,582 7,624 4,349 10,708 11,169 120,675 22,662 — 183,769 Substandard — — — — — 280 — — 280 Consumer loans Pass 2 47 101 35 22 3,998 2,073 — 6,278 Substandard — — 7 — — 39 — — 46 Total retail loans 6,584 7,671 4,457 10,743 11,191 124,992 24,735 — 190,373 Totals gross loans $ 758,874 $ 1,837,742 $ 3,184,608 $ 1,974,365 $ 1,623,130 $ 2,947,726 $ 789,248 $ 1,699 $ 13,117,392 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 2020 2019 2018 2017 2016 Prior Revolving Revolving Converted to Term During the Period Total December 31, 2020 (Dollars in thousands) 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 2020 2019 2018 2017 2016 Prior Revolving Revolving Converted to Term During the Period Total December 31, 2020 (Dollars in thousands) 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 Term Loans by Vintage 2021 2020 2019 2018 2017 Prior Revolving Revolving Converted to Term During the Period Total March 31, 2021 (Dollars in thousands) Investor loans secured by real estate CRE non-owner-occupied 0% - 5.00% $ 124,225 $ 244,225 $ 447,464 $ 445,435 $ 223,077 $ 927,154 $ 10,779 $ — $ 2,422,359 >5.00% - 10.00% — 25,477 9,581 14,151 12,408 73,255 — — 134,872 Greater than 10% — 2,299 71,735 32,941 43,392 21,639 548 — 172,554 Multifamily 0% - 5.00% 372,435 946,666 1,564,508 763,445 611,026 812,130 1,426 — 5,071,636 >5.00% - 10.00% 32,587 5,858 51,975 17,181 6,602 17,328 — — 131,531 Greater than 10% — 53,404 12,131 13,368 12,456 15,066 — — 106,425 Construction and Land 0% - 5.00% 12,496 65,447 28,996 1,425 4,081 5,139 1,043 — 118,627 >5.00% - 10.00% — 7,462 45,561 — 3,785 71 — — 56,879 Greater than 10% — 3,577 59,440 52,370 4,398 21,167 — — 140,952 SBA secured by real estate 0% - 5.00% — 498 9,508 12,517 17,476 15,942 — — 55,941 >5.00% - 10.00% — — — — — — — — — Greater than 10% — — 102 — — 338 — — 440 Total investor loans secured by real estate 541,743 1,354,913 2,301,001 1,352,833 938,701 1,909,229 13,796 — 8,412,216 Business loans secured by real estate CRE owner-occupied 0% - 5.00% 108,753 274,558 358,652 251,081 274,570 588,999 8,946 — 1,865,559 >5.00% - 10.00% — 11,033 15,015 31,674 30,254 51,484 — — 139,460 Greater than 10% — — — 5,883 9,043 9,789 250 — 24,965 Franchise real estate secured 0% - 5.00% 23,192 36,483 69,701 58,245 80,716 36,800 — — 305,137 >5.00% - 10.00% — 7,588 3,218 7,280 1,103 16,037 — — 35,226 Greater than 10% — 442 — — — — — — 442 SBA secured by real estate 0% - 5.00% 510 3,237 7,517 11,357 11,448 21,384 — — 55,453 >5.00% - 10.00% — — 70 905 1,694 6,502 — — 9,171 Greater than 10% — — — 1,347 2,124 5,872 — — 9,343 Total business loans secured by real estate 132,455 333,341 454,173 367,772 410,952 736,867 9,196 — 2,444,756 Commercial Real Estate Term Loans by Vintage 2021 2020 2019 2018 2017 Prior Revolving Revolving Converted to Term During the Period Total March 31, 2021 (Dollars in thousands) Commercial Loans Commercial and industrial 0% - 5.00% 61,115 76,872 223,574 101,069 182,673 90,115 316,224 1,113 1,052,755 >5.00% - 10.00% 1,507 28,732 31,098 25,613 10,383 16,090 305,405 101 418,929 Greater than 10% — 8,575 20,849 21,862 2,997 11,807 117,839 485 184,414 Franchise non-real estate secured 0% - 5.00% 15,398 21,160 102,790 78,320 34,932 31,020 — — 283,620 >5.00% - 10.00% — 6,056 35,273 8,527 8,362 18,588 — — 76,806 Greater than 10% — — 9,100 5,762 18,397 3,995 1,361 — 38,615 SBA not secured by real estate 0% - 5.00% 72 422 2,212 1,021 1,299 3,230 — — 8,256 >5.00% - 10.00% — — — 490 1,518 1,102 — — 3,110 Greater than 10% — — 81 353 1,725 691 692 — 3,542 Total commercial loans $ 78,092 $ 141,817 $ 424,977 $ 243,017 $ 262,286 $ 176,638 $ 741,521 $ 1,699 $ 2,070,047 Commercial Real Estate Term Loans by Vintage 2020 2019 2018 2017 2016 Prior Revolving Revolving Converted to Term During the Period Total December 31, 2020 (Dollars in thousands) 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 Term Loans by Vintage 2020 2019 2018 2017 2016 Prior Revolving Revolving Converted to Term During the Period Total December 31, 2020 (Dollars in thousands) 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 Vintage 2021 2020 2019 2018 2017 Prior Revolving Revolving Converted to Term During the Period Total March 31, 2021 (Dollars in thousands) Investor loans secured by real estate CRE non-owner-occupied 55% and below $ 64,538 $ 130,003 $ 213,339 $ 220,420 $ 130,687 $ 709,045 $ 10,779 — $ 1,478,811 >55-65% 31,752 116,313 197,381 105,577 130,405 266,760 548 — 848,736 >65-75% 27,935 25,685 97,297 153,854 13,411 44,463 — — 362,645 Greater than 75% — — 20,763 12,676 4,374 1,780 — — 39,593 Multifamily 55% and below 59,772 219,912 344,043 261,109 231,004 356,028 1,426 — 1,473,294 >55-65% 173,282 389,105 716,453 359,851 211,357 328,477 — — 2,178,525 >65-75% 169,340 396,911 553,451 162,499 185,854 155,480 — — 1,623,535 Greater than 75% 2,628 — 14,667 10,535 1,869 4,539 — — 34,238 Construction and land 55% and below 12,496 76,486 106,181 27,368 12,264 26,377 1,043 — 262,215 >55-65% — — 19,603 18,590 — — — — 38,193 >65-75% — — 8,213 7,837 — — — — 16,050 Greater than 75% — — — — — — — — — SBA secured by real estate 55% and below — — 102 645 669 1,088 — — 2,504 >55-65% — — 2,420 1,633 3,991 5,449 — — 13,493 >65-75% — — 3,888 4,641 3,477 6,619 — — 18,625 Greater than 75% — 498 3,200 5,598 9,339 3,124 — — 21,759 Total investor loans secured by real estate 541,743 1,354,913 2,301,001 1,352,833 938,701 1,909,229 13,796 — 8,412,216 Business loan secured by real estate CRE owner-occupied 55% and below 41,757 100,507 148,303 122,790 173,168 433,778 9,196 — 1,029,499 >55-65% 28,552 64,442 75,112 87,262 101,484 131,991 — — 488,843 >65-75% 17,278 71,694 143,725 72,734 25,938 63,635 — — 395,004 Greater than 75% 21,166 48,948 6,527 5,852 13,277 20,868 — — 116,638 Franchise real estate secured 55% and below 1,884 20,715 9,853 15,109 13,479 25,410 — — 86,450 >55-65% — 2,666 9,905 14,514 14,248 7,615 — — 48,948 >65-75% 11,298 15,452 42,286 17,909 14,740 16,607 — — 118,292 Greater than 75% 10,010 5,680 10,875 17,993 39,352 3,205 — — 87,115 SBA secured by real estate 55% and below 510 1,813 1,601 5,265 5,442 16,620 — — 31,251 >55-65% — 247 512 1,740 999 8,073 — — 11,571 >65-75% — 263 3,129 1,293 3,695 4,824 — — 13,204 Greater than 75% — 914 2,345 5,311 5,130 4,241 — — 17,941 Total business loans secured by real estate $ 132,455 $ 333,341 $ 454,173 $ 367,772 $ 410,952 $ 736,867 $ 9,196 $ — $ 2,444,756 Term Loans by Vintage 2020 2019 2018 2017 2016 Prior Revolving Revolving Converted to Term During the Period Total December 31, 2020 (Dollars in thousands) 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 Vintage 2021 2020 2019 2018 2017 Prior Revolving Revolving Converted to Term During the Period Total (Dollars in thousands) March 31, 2021 Retail Loans Single family residential Greater than 740 $ 6,582 $ 7,624 $ 3,480 $ 10,341 $ 6,559 $ 78,694 $ 15,850 — $ 129,130 >680 - 740 — — 869 367 4,119 14,654 5,915 — 25,924 >580 - 680 — — — — 491 9,561 863 — 10,915 Less than 580 — — — — — 18,046 34 — 18,080 Consumer loans Greater than 740 2 47 63 30 19 3,476 531 — 4,168 >680 - 740 — — 32 5 3 459 1,461 — 1,960 >580 - 680 — — 13 — — 90 57 — 160 Less than 580 — — — — — 12 24 — 36 Total retail loans $ 6,584 $ 7,671 $ 4,457 $ 10,743 $ 11,191 $ 124,992 $ 24,735 $ — $ 190,373 Term Loans by Vintage 2020 2019 2018 2017 2016 Prior Revolving Revolving Converted to Term During the Period Total (Dollars in thousands) 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)	3 Months Ended
Goodwill and Other Intangible Assets (Tables)	Mar. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of goodwill	March 31, March 31, 2021 2020 (Dollars in thousands) Balance, beginning of year $ 898,569 $ 808,322 Purchase accounting adjustments 1,635 — Balance, end of year $ 900,204 $ 808,322 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 March 31, December 31, March 31, 2021 2020 2020 (Dollars in thousands) Gross amount of intangible assets: Beginning balance $ 145,212 $ 145,212 $ 125,945 Additions due to acquisitions — — — Ending balance 145,212 145,212 125,945 Accumulated amortization: Beginning balance (59,705) (55,200) (42,633) Amortization (4,143) (4,505) (3,963) Ending balance (63,848) (59,705) (46,596) Net intangible assets $ 81,364 $ 85,507 $ 79,349

Subordinated Debentures (Tables

Subordinated Debentures (Tables)	3 Months Ended
Subordinated Debentures (Tables)	Mar. 31, 2021
Debt Disclosure [Abstract]
Schedule of outstanding subordinated debentures	The following table summarizes our outstanding subordinated debentures as of the dates indicated: March 31, 2021 December 31, 2020 Stated Maturity Current Interest Rate Current Principal Balance Carrying Value (Dollars in thousands) Subordinated notes Subordinated notes due 2024, 5.75% per annum September 3, 2024 5.75 % $ 60,000 $ 59,581 $ 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 % 125,000 122,941 122,877 Subordinated notes due 2030, 5.375% per annum until June 15, 2025, 3-month SOFR +5.170% thereafter June 15, 2030 5.375 % 150,000 147,567 147,501 Subordinated notes due 2025, 7.125% per annum June 26, 2025 7.125 % 25,000 25,103 25,109 Subordinated notes due 2026, 5.50% per annum until June 30 2021, 3-month LIBOR +4.285% thereafter July 1, 2026 5.50 % 135,000 138,282 138,371 Total subordinated notes 495,000 493,474 493,410 Subordinated debt Heritage Oaks Capital Trust II (junior subordinated debt), 3-month LIBOR+1.72% January 1, 2037 1.96 % 5,248 4,138 4,121 Santa Lucia Bancorp (CA) Capital Trust (junior subordinated debt), 3-month LIBOR+1.48% July 7, 2036 1.72 % 5,155 3,999 3,980 Total subordinated debt 10,403 8,137 8,101 Total subordinated debentures $ 505,403 $ 501,611 $ 501,511

Earnings per Share (Tables)

Earnings per Share (Tables)	3 Months Ended
Earnings per Share (Tables)	Mar. 31, 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 March 31, 2021 December 31, 2020 March 31, 2020 (Dollars in thousands, except per share data) Basic Net income $ 68,668 $ 67,136 $ 25,740 Less: Dividends and undistributed earnings allocated to participating securities (665) (629) (232) Net income allocated to common stockholders $ 68,003 $ 66,507 $ 25,508 Weighted average common shares outstanding 93,529,147 93,568,994 59,007,191 Basic earnings per common share $ 0.73 $ 0.71 $ 0.43 Diluted Net income allocated to common stockholders $ 68,003 $ 66,507 $ 25,508 Weighted average common shares outstanding 93,529,147 93,568,994 59,007,191 Diluted effect of share-based compensation 564,497 400,194 182,526 Weighted average diluted common shares 94,093,644 93,969,188 59,189,717 Diluted earnings per common share $ 0.72 $ 0.71 $ 0.43

Fair Value of Financial Instr_2

Fair Value of Financial Instruments (Tables)	3 Months Ended
Fair Value of Financial Instruments (Tables)	Mar. 31, 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: March 31, 2021 Fair Value Measurement Using Level 1 Level 2 Level 3 Total Fair Value (Dollars in thousands) Financial assets Investment securities available-for-sale: U.S. Treasury $ — $ 32,063 $ — $ 32,063 Agency — 663,159 — 663,159 Corporate — 357,834 — 357,834 Municipal bonds — 1,422,062 — 1,422,062 Collateralized mortgage obligations — 508,971 — 508,971 Mortgage-backed securities — 873,248 — 873,248 Total securities available-for-sale $ — $ 3,857,337 $ — $ 3,857,337 Derivative assets: Interest rate swaps $ — $ 5,326 $ — $ 5,326 Equity warrants — — 1,911 1,911 Total derivative assets $ — $ 5,326 $ 1,911 $ 7,237 Financial liabilities Derivative liabilities $ — $ 5,332 $ — $ 5,332 December 31, 2020 Fair Value Measurement Using Level 1 Level 2 Level 3 Total (Dollars in thousands) 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 March 31, 2021 (Dollars in thousands) Beginning Balance $ 1,914 Change in fair value (1) (3) Ending balance $ 1,911 ______________________________ (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 at the dates indicated. March 31, 2021 Range Fair Value Valuation Technique(s) Unobservable Input(s) Min Max Weighted Average (Dollars in thousands) Equity warrants $ 1,911 Black-Scholes Volatility 30.00% 0.16% 6.00% 35.00% 0.64% 16.00% 31.18% 0.27% 13.52% December 31, 2020 Range Fair Value Valuation Technique(s) Unobservable Input(s) Min Max Weighted Average (Dollars in thousands) 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. March 31, 2021 Range Fair Value Valuation Technique(s) Unobservable Input(s) Min Max Weighted Average (Dollars in thousands) Investor loans secured by real estate SBA secured by real estate (1) 440 Fair value of collateral Collateral discount and cost to sell 10.00% 10.00% 10.00% Commercial loans Commercial and industrial 166 Fair value of collateral Collateral discount and cost to sell 75.00% 100.00% 75.00% Total individually evaluated loans $ 606 December 31, 2020 Range Fair Value Valuation Technique(s) Unobservable Input(s) Min Max Weighted Average (Dollars in thousands) 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 nonrecuring basis	The following table presents our assets measured at fair value on a nonrecurring basis at the dates indicated. March 31, 2021 Level 1 Level 2 Level 3 Total (Dollars in thousands) Financial assets Collateral dependent loans $ — $ — $ 606 $ 606 December 31, 2020 Level 1 Level 2 Level 3 Total (Dollars in thousands) 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 March 31, 2021 Carrying Level 1 Level 2 Level 3 Estimated (Dollars in thousands) Assets Cash and cash equivalents $ 1,554,668 $ 1,554,668 $ — $ — $ 1,554,668 Interest-bearing time deposits with financial institutions 2,708 2,708 — — 2,708 Investments held-to-maturity 21,931 — 23,004 — 23,004 Investment securities available-for-sale 3,857,337 — 3,857,337 — 3,857,337 Loans held for sale 7,311 — 7,702 — 7,702 Loans held for investment, net 13,117,392 — — 13,276,121 13,276,121 Derivative assets 7,237 — 5,326 1,911 7,237 Accrued interest receivable 65,098 65,098 — — 65,098 Liabilities Deposit accounts $ 16,740,007 $ 15,369,192 $ 1,373,363 $ — $ 16,742,555 FHLB advances 10,000 — 9,998 — 9,998 Subordinated debentures 501,611 — 542,721 — 542,721 Derivative liabilities 5,332 — 5,332 — 5,332 Accrued interest payable 7,097 7,097 — — 7,097 At December 31, 2020 Carrying Level 1 Level 2 Level 3 Estimated (Dollars in thousands) 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)	3 Months Ended
Derivative Instruments (Tables)	Mar. 31, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
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: March 31, 2021 Derivative Assets Derivative Liabilities Notional Fair Value Notional Fair Value (Dollars in thousands) Derivative instruments not designated as hedging instruments: Interest rate swaps contracts $ 143,577 $ 5,326 $ 143,577 $ 5,332 Equity warrants — 1,911 — — Total derivative instruments $ 143,577 $ 7,237 $ 143,577 $ 5,332 December 31, 2020 Derivative Assets Derivative Liabilities Notional Fair Value Notional Fair Value (Dollars in thousands) 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 derivative financial instruments in the consolidated statements of income. Three Months Ended Derivative Not Designated as Hedging Instruments: Location of Gain (Loss) Recognized in Income on Derivative Instruments March 31, 2021 March 31, 2020 (Dollars in thousands) Interest rate products Other income $ 7 $ — Other contracts Other income — 198 Equity warrants Other income (3) — Total $ 4 $ 198

Balance Sheet Offsetting (Table

Balance Sheet Offsetting (Tables)	3 Months Ended
Balance Sheet Offsetting (Tables)	Mar. 31, 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 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 (Dollars in thousands) March 31, 2021 Derivative assets: Interest rate swaps $ 5,326 $ — $ 5,326 $ — $ — $ 5,326 Total $ 5,326 $ — $ 5,326 $ — $ — $ 5,326 Derivative liabilities: Interest rate swaps $ 5,332 $ — $ 5,332 $ — $ (5,332) $ — Total $ 5,332 $ — $ 5,332 $ — $ (5,332) $ — 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)	3 Months Ended
Leases (Tables)	Mar. 31, 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. The following table presents the components of lease expense for the periods indicated: Three Months Ended March 31, 2021 December 31, 2020 March 31, 2020 (Dollars in thousands) Operating lease $ 5,012 $ 5,375 3,164 Short-term lease 507 607 527 Total lease expense $ 5,519 $ 5,982 $ 3,691
Schedule of supplemental information	The following table presents supplemental information related to operating leases as of and for three months ended: March 31, 2021 December 31, 2020 (Dollars in thousands) Balance Sheet: Operating lease right of use assets $ 70,417 $ 76,090 Operating lease liabilities 79,441 85,556 Three Months Ended March 31, 2021 March 31, 2020 (Dollars in thousands) Cash Flows: Operating cash flows from operating leases $ 2,000 $ 2,257
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: 2021 2022 2023 2024 2025 Thereafter Total (Dollars in thousands) As of March 31, 2021 Operating leases $ 14,778 $ 18,682 $ 18,051 $ 16,076 $ 11,014 $ 13,039 $ 91,640 Short-term leases 180 7 — — — — 187 Total contractual base rents (1) $ 14,958 $ 18,689 $ 18,051 $ 16,076 $ 11,014 $ 13,039 $ 91,827 Total liability to make lease payments $ 79,441 Difference in undiscounted and discounted future lease payments $ 12,386 Weighted average discount rate 5.70 % Weighted average remaining lease term (years) 5.3 ______________________________ (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)	3 Months Ended
Revenue Recognition (Tables)	Mar. 31, 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 March 31, 2021 December 31, 2020 March 31, 2020 Within Scope (1) Out of Scope (2) Within Scope (1) Out of Scope (2) Within Scope (1) Out of Scope (2) (Dollars in thousands) Noninterest income: Loan servicing income $ — $ 458 $ — $ 633 $ — $ 480 Service charges on deposit accounts 2,032 — 2,005 — 1,715 — Other service fee income 473 — 459 — 311 — Debit card interchange income 787 — 777 — 348 — Earnings on bank-owned life insurance — 2,233 — 2,240 — 1,336 Net gain from sales of loans — 361 — 328 — 771 Net gain from sales of investment securities — 4,046 — 5,002 — 7,760 Trust custodial account fees 7,222 — 7,296 — — — Escrow and exchange fees 1,526 — 1,257 — — — Other income 282 4,320 199 2,998 217 1,537 Total noninterest income $ 12,322 $ 11,418 $ 11,993 $ 11,201 $ 2,591 $ 11,884 ______________________________ (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)	3 Months Ended
Variable Interest Entities (Tables)	Mar. 31, 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 March 31, 2021 and December 31, 2020 that relate to variable interests in non-consolidated VIEs. March 31, 2021 December 31, 2020 Maximum Loss Assets Liabilities Maximum Loss Assets Liabilities (Dollars in thousands) Multifamily loan securitization: Investment securities (1) $ 98,863 $ 98,863 $ — $ 100,927 $ 100,927 $ — Reimbursement obligation (2) 50,901 — 448 50,901 — 448 Affordable housing partnership: Other investments (3) 71,637 86,448 — 71,681 89,759 — Unfunded equity commitments (2) — — 14,811 — — 18,078 Total $ 221,401 $ 185,311 $ 15,259 $ 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) $ in Thousands	Jun. 01, 2020USD ($)office	May 29, 2020USD ($)	Mar. 31, 2021USD ($)	Dec. 31, 2020USD ($)
Business Acquisition [Line Items]
Total assets			$ 20,173,298	$ 19,736,544
Loans held for investment			13,117,392	13,236,433
Total deposits			$ 16,740,007	$ 16,214,177
Opus Bank
Business Acquisition [Line Items]
Total merger consideration	$ 749,605	$ 749,605
Opus Bank \| Opus Bank
Business Acquisition [Line Items]
Total assets	8,320,000
Loans held for investment	5,940,000
Total deposits	$ 6,910,000
Number of banking offices \| office	46

Significant Accounting Polici_3

Significant Accounting Policies (Details) - USD ($) $ in Thousands	Jun. 01, 2020	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Proceeds from loans held for sale previously classified as portfolio loans		$ 449	$ 25,038
Loans held for investment		13,117,392		$ 13,236,433
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
Commercial loans
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Loans held for investment		$ 2,070,047		$ 2,229,588
Min
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Weighted average useful life		6 years
Max
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	Mar. 31, 2021USD ($)	Dec. 31, 2020USD ($)	Mar. 31, 2020USD ($)	Mar. 31, 2021USD ($)	May 31, 2020USD ($)client_account	Dec. 31, 2019USD ($)
Business Acquisition [Line Items]
Total assets			$ 20,173,298	$ 19,736,544		$ 20,173,298
Total gross loans			13,117,392	13,236,433		13,117,392
Total deposits			16,740,007	16,214,177		16,740,007
Goodwill			900,204	898,569	$ 808,322	900,204		$ 808,322
Purchase accounting adjustments			1,635		0
ACL expense (reversal)			315		25,382
Merger-related expense			5	$ 5,071	1,724
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 (usd per share) \| $ / shares	$ 19.31
Closing price of Corporation's common stock (in dollars per share) \| $ / shares		$ 21.62
Total merger consideration	$ 749,605	$ 749,605
Intangible assets	19,267
Goodwill	91,882
Purchase accounting adjustments			1,600			$ 962
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
Initial ACL Recorded for PCD Loans	21,200
Merger-related expense			$ 5		$ 1,700
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 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	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Liabilities assumed
Goodwill recognized			$ 900,204	$ 898,569	$ 808,322	$ 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	44,835
Other assets	368,837
Total assets acquired	8,010,399
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 identifiable net assets	657,723
Total merger consideration	749,605	$ 749,605
Goodwill recognized	$ 91,882

Acquisitions - Pro Forma Financ

Acquisitions - Pro Forma Financial Information (Details) - Opus Bank - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Business Acquisition [Line Items]
Net interest and other income	$ 185,392	$ 197,117
Net income	$ 68,668	$ 43,128
Basic earnings per share (in dollars per share)	$ 0.73	$ 0.47
Diluted earnings per share (in dollars per share)	$ 0.72	$ 0.47

Investment Securities - Amortiz

Investment Securities - Amortized Cost and Estimated Fair Value (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Investment securities available-for-sale:
Total	$ 3,878,665	$ 3,846,733
Gross Unrealized Gain	49,030	90,004
Gross Unrealized Loss	(70,358)	(5,622)
Estimated Fair Value	3,857,337	3,931,115
Investment securities held-to-maturity:
Amortized Cost	21,931	23,732
Gross Unrealized Gain	1,073	1,281
Gross Unrealized Loss	0	0
Estimated Fair Value	23,004	25,013
Total investment securities
Amortized Cost	3,900,596	3,870,465
Gross Unrealized Gain	50,103	91,285
Gross Unrealized Loss	(70,358)	(5,622)
Estimated Fair Value	3,880,341	3,956,128
U.S. Treasury
Investment securities available-for-sale:
Total	30,144	30,153
Gross Unrealized Gain	1,919	2,380
Gross Unrealized Loss	0	0
Estimated Fair Value	32,063	32,533
Agency
Investment securities available-for-sale:
Total	660,582	666,702
Gross Unrealized Gain	12,956	24,292
Gross Unrealized Loss	(10,379)	(608)
Estimated Fair Value	663,159	690,386
Corporate
Investment securities available-for-sale:
Total	360,617	412,223
Gross Unrealized Gain	2,128	3,591
Gross Unrealized Loss	(4,911)	(506)
Estimated Fair Value	357,834	415,308
Municipal bonds
Investment securities available-for-sale:
Total	1,432,169	1,412,012
Gross Unrealized Gain	22,287	37,260
Gross Unrealized Loss	(32,394)	(3,253)
Estimated Fair Value	1,422,062	1,446,019
Collateralized mortgage obligations
Investment securities available-for-sale:
Total	514,250	513,259
Gross Unrealized Gain	431	819
Gross Unrealized Loss	(5,710)	(712)
Estimated Fair Value	508,971	513,366
Mortgage-backed securities
Investment securities available-for-sale:
Total	880,903	812,384
Gross Unrealized Gain	9,309	21,662
Gross Unrealized Loss	(16,964)	(543)
Estimated Fair Value	873,248	833,503
Investment securities held-to-maturity:
Amortized Cost	20,353	22,124
Gross Unrealized Gain	1,073	1,281
Gross Unrealized Loss	0	0
Estimated Fair Value	21,426	23,405
Other
Investment securities held-to-maturity:
Amortized Cost	1,578	1,608
Gross Unrealized Gain	0	0
Gross Unrealized Loss	0	0
Estimated Fair Value	$ 1,578	$ 1,608

Investment Securities - Narrati

Investment Securities - Narrative (Details)	3 Months Ended
Investment Securities - Narrative (Details)	Mar. 31, 2021USD ($)investmentSecurity	Dec. 31, 2020USD ($)investmentSecurity	Jun. 30, 2020USD ($)	Mar. 31, 2020USD ($)
Investment Securities
Accumulated other comprehensive income (loss) before tax amount	$ (21,300,000)	$ 84,400,000
Accumulated other comprehensive income (loss), net of tax	(15,189,000)	60,292,000
Available-for-sale securities acquired	364,542,000			$ 104,725,000
Available-for-sale securities, provision for credit losses	$ 0	$ 0		0
Available-for-sale and held-to-maturity securities in nonaccrual status \| investmentSecurity	0	0
Available-for-sale and held-to-maturity securities purchased with deterioration in credit quality \| investmentSecurity	0	0
Available-for-sale and held-to-maturity collateral dependant \| investmentSecurity	0	0
Gross gains	$ 4,200,000	$ 5,300,000		8,000,000
Gross losses	191,000	285,000		204,000
Proceeds from available-for-sale securities	179,400,000	207,600,000		97,900,000
Investment securities pledged	128,100,000	147,300,000
FHLB stock	17,300,000
FRB stock	74,500,000
Other stock	26,100,000
Amount of stock repurchased by FHLB	0	$ 0		$ 0
Impairment loss on investments in FHLB, FRB and other stock	$ 0
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

Investment Securities - Investm

Investment Securities - Investment Category and Length of Time (Details) $ in Thousands	Mar. 31, 2021USD ($)investmentSecurity	Dec. 31, 2020USD ($)investmentSecurity
Less than 12 Months
Number \| investmentSecurity	321	106
Fair Value	$ 2,444,228	$ 812,988
Gross Unrealized Losses	$ (70,071)	$ (5,319)
12 Months or Longer
Number \| investmentSecurity	10	10
Fair Value	$ 10,335	$ 10,865
Gross Unrealized Losses	$ (287)	$ (303)
Total
Number \| investmentSecurity	331	116
Fair Value	$ 2,454,563	$ 823,853
Gross Unrealized Losses	$ (70,358)	$ (5,622)
Agency
Less than 12 Months
Number \| investmentSecurity	28	4
Fair Value	$ 389,387	$ 74,194
Gross Unrealized Losses	$ (10,094)	$ (307)
12 Months or Longer
Number \| investmentSecurity	9	9
Fair Value	$ 9,947	$ 10,434
Gross Unrealized Losses	$ (285)	$ (301)
Total
Number \| investmentSecurity	37	13
Fair Value	$ 399,334	$ 84,628
Gross Unrealized Losses	$ (10,379)	$ (608)
Corporate
Less than 12 Months
Number \| investmentSecurity	18	9
Fair Value	$ 152,134	$ 71,226
Gross Unrealized Losses	$ (4,911)	$ (506)
12 Months or Longer
Number \| investmentSecurity	0	0
Fair Value	$ 0	$ 0
Gross Unrealized Losses	$ 0	$ 0
Total
Number \| investmentSecurity	18	9
Fair Value	$ 152,134	$ 71,226
Gross Unrealized Losses	$ (4,911)	$ (506)
Municipal bonds
Less than 12 Months
Number \| investmentSecurity	173	56
Fair Value	$ 921,332	$ 312,894
Gross Unrealized Losses	$ (32,394)	$ (3,253)
12 Months or Longer
Number \| investmentSecurity	0	0
Fair Value	$ 0	$ 0
Gross Unrealized Losses	$ 0	$ 0
Total
Number \| investmentSecurity	173	56
Fair Value	$ 921,332	$ 312,894
Gross Unrealized Losses	$ (32,394)	$ (3,253)
Collateralized mortgage obligations
Less than 12 Months
Number \| investmentSecurity	32	21
Fair Value	$ 309,975	$ 215,603
Gross Unrealized Losses	$ (5,708)	$ (710)
12 Months or Longer
Number \| investmentSecurity	1	1
Fair Value	$ 388	$ 431
Gross Unrealized Losses	$ (2)	$ (2)
Total
Number \| investmentSecurity	33	22
Fair Value	$ 310,363	$ 216,034
Gross Unrealized Losses	$ (5,710)	$ (712)
Mortgage-backed securities
Less than 12 Months
Number \| investmentSecurity	70	16
Fair Value	$ 671,400	$ 139,071
Gross Unrealized Losses	$ (16,964)	$ (543)
12 Months or Longer
Number \| investmentSecurity	0	0
Fair Value	$ 0	$ 0
Gross Unrealized Losses	$ 0	$ 0
Total
Number \| investmentSecurity	70	16
Fair Value	$ 671,400	$ 139,071
Gross Unrealized Losses	$ (16,964)	$ (543)

Investment Securities - By Cont

Investment Securities - By Contractual Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Amortized Cost
Due in One Year or Less	$ 105,997
Due after One Year through Five Years	396,025
Due after Five Years through Ten Years	908,710
Due after Ten Years	2,467,933
Total	3,878,665	$ 3,846,733
Fair Value
Due in One Year or Less	106,203
Due after One Year through Five Years	401,860
Due after Five Years through Ten Years	912,001
Due after Ten Years	2,437,273
Total	3,857,337	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	21,931
Amortized Cost	21,931	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	23,004
Total	23,004	25,013
Amortized Cost
Due in One Year or Less	105,997
Due after One Year through Five Years	396,025
Due after Five Years through Ten Years	908,710
Due after Ten Years	2,489,864
Total	3,900,596
Fair Value
Due in One Year or Less	106,203
Due after One Year through Five Years	401,860
Due after Five Years through Ten Years	912,001
Due after Ten Years	2,460,277
Total	3,880,341
U.S. Treasury
Amortized Cost
Due in One Year or Less	0
Due after One Year through Five Years	30,144
Due after Five Years through Ten Years	0
Due after Ten Years	0
Total	30,144	30,153
Fair Value
Due in One Year or Less	0
Due after One Year through Five Years	32,063
Due after Five Years through Ten Years	0
Due after Ten Years	0
Total	32,063	32,533
Agency
Amortized Cost
Due in One Year or Less	0
Due after One Year through Five Years	322,038
Due after Five Years through Ten Years	251,286
Due after Ten Years	87,258
Total	660,582	666,702
Fair Value
Due in One Year or Less	0
Due after One Year through Five Years	325,584
Due after Five Years through Ten Years	252,084
Due after Ten Years	85,491
Total	663,159	690,386
Corporate
Amortized Cost
Due in One Year or Less	94,711
Due after One Year through Five Years	9,683
Due after Five Years through Ten Years	218,847
Due after Ten Years	37,376
Total	360,617	412,223
Fair Value
Due in One Year or Less	94,917
Due after One Year through Five Years	9,645
Due after Five Years through Ten Years	218,536
Due after Ten Years	34,736
Total	357,834	415,308
Municipal bonds
Amortized Cost
Due in One Year or Less	11,286
Due after One Year through Five Years	4,622
Due after Five Years through Ten Years	36,182
Due after Ten Years	1,380,079
Total	1,432,169	1,412,012
Fair Value
Due in One Year or Less	11,286
Due after One Year through Five Years	4,912
Due after Five Years through Ten Years	38,652
Due after Ten Years	1,367,212
Total	1,422,062	1,446,019
Collateralized mortgage obligations
Amortized Cost
Due in One Year or Less	0
Due after One Year through Five Years	27,394
Due after Five Years through Ten Years	211,472
Due after Ten Years	275,384
Total	514,250	513,259
Fair Value
Due in One Year or Less	0
Due after One Year through Five Years	27,373
Due after Five Years through Ten Years	207,662
Due after Ten Years	273,936
Total	508,971	513,366
Mortgage-backed securities
Amortized Cost
Due in One Year or Less	0
Due after One Year through Five Years	2,144
Due after Five Years through Ten Years	190,923
Due after Ten Years	687,836
Total	880,903	812,384
Fair Value
Due in One Year or Less	0
Due after One Year through Five Years	2,283
Due after Five Years through Ten Years	195,067
Due after Ten Years	675,898
Total	873,248	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	20,353
Amortized Cost	20,353	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	21,426
Total	21,426	$ 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	1,578
Amortized Cost	1,578
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	1,578
Total	$ 1,578

Investment Securities - Inves_2

Investment Securities - Investment Securities by External Credit Rating (Details) $ in Thousands	Mar. 31, 2021USD ($)
Debt Securities, Available-for-sale [Line Items]
2021	$ 213,825
2020	2,202,563
2019	630,449
2018	250,083
2017	164,354
Prior	417,994
Total	3,879,268
Investment securities available-for-sale:
Debt Securities, Available-for-sale [Line Items]
2021	213,825
2020	2,202,563
2019	630,449
2018	243,644
2017	159,168
Prior	407,688
Total	3,857,337
Investment securities available-for-sale: \| U.S. Treasury \| Aaa - Aa3
Debt Securities, Available-for-sale [Line Items]
2021	0
2020	0
2019	0
2018	21,510
2017	10,553
Prior	0
Total	32,063
Investment securities available-for-sale: \| Agency \| Aaa - Aa3
Debt Securities, Available-for-sale [Line Items]
2021	0
2020	352,414
2019	73,090
2018	151,364
2017	9,075
Prior	77,216
Total	663,159
Investment securities available-for-sale: \| Corporate \| A1 - A3
Debt Securities, Available-for-sale [Line Items]
2021	0
2020	56,760
2019	0
2018	0
2017	0
Prior	93,295
Total	150,055
Investment securities available-for-sale: \| Corporate \| Baa1 - Baa3
Debt Securities, Available-for-sale [Line Items]
2021	0
2020	98,707
2019	69,231
2018	0
2017	17,919
Prior	21,922
Total	207,779
Investment securities available-for-sale: \| Municipal bonds \| Aaa - Aa3
Debt Securities, Available-for-sale [Line Items]
2021	11,286
2020	994,512
2019	285,174
2018	32,304
2017	59,458
Prior	35,689
Total	1,418,423
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	2,313
Total	2,313
Investment securities available-for-sale: \| Municipal bonds \| Baa1 - Baa3
Debt Securities, Available-for-sale [Line Items]
2021	0
2020	0
2019	0
2018	0
2017	0
Prior	1,326
Total	1,326
Investment securities available-for-sale: \| Collateralized mortgage obligations \| Aaa - Aa3
Debt Securities, Available-for-sale [Line Items]
2021	17,334
2020	241,843
2019	93,697
2018	25,311
2017	14,634
Prior	116,152
Total	508,971
Investment securities available-for-sale: \| Mortgage-backed securities \| Aaa - Aa3
Debt Securities, Available-for-sale [Line Items]
2021	185,205
2020	458,327
2019	109,257
2018	13,155
2017	47,529
Prior	59,775
Total	873,248
Investment securities held-to-maturity:
Debt Securities, Available-for-sale [Line Items]
2021	0
2020	0
2019	0
2018	6,439
2017	5,186
Prior	10,306
Total	21,931
Investment securities held-to-maturity: \| Mortgage-backed securities \| Aaa - Aa3
Debt Securities, Available-for-sale [Line Items]
2021	0
2020	0
2019	0
2018	5,822
2017	5,186
Prior	9,345
Total	20,353
Investment securities held-to-maturity: \| Other \| Baa1 - Baa3
Debt Securities, Available-for-sale [Line Items]
2021	0
2020	0
2019	0
2018	617
2017	0
Prior	961
Total	$ 1,578

Loans Held for Investment - Com

Loans Held for Investment - Composition of Loan Portfolio (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Loans Held for Investment
Loans held for investment	$ 13,117,392	$ 13,236,433
Allowance for credit losses for loans held for investment	(266,999)	(268,018)	$ (115,422)	$ (35,698)
Loans held for investment, net	12,850,393	12,968,415
Loans held for sale, at lower of cost or fair value	7,311	601
Unaccreted mark-to-market discount	103,900	113,800
Investor loans secured by real estate
Loans Held for Investment
Loans held for investment	8,412,216	8,225,765
Investor loans secured by real estate \| CRE non-owner-occupied
Loans Held for Investment
Loans held for investment	2,729,785	2,675,085
Allowance for credit losses for loans held for investment	(45,545)	(49,176)	(15,896)	(1,899)
Investor loans secured by real estate \| Multifamily
Loans Held for Investment
Loans held for investment	5,309,592	5,171,356
Allowance for credit losses for loans held for investment	(79,815)	(62,534)	(14,722)	(729)
Investor loans secured by real estate \| Construction and land
Loans Held for Investment
Loans held for investment	316,458	321,993
Allowance for credit losses for loans held for investment	(13,263)	(12,435)	(9,222)	(4,484)
Investor loans secured by real estate \| SBA secured by real estate
Loans Held for Investment
Loans held for investment	56,381	57,331
Allowance for credit losses for loans held for investment	(5,141)	(5,159)	(935)	(1,915)
Business loans secured by real estate
Loans Held for Investment
Loans held for investment	2,444,756	2,541,577
Business loans secured by real estate \| SBA secured by real estate
Loans Held for Investment
Loans held for investment	73,967	79,595
Allowance for credit losses for loans held for investment	(6,451)	(6,567)	(4,044)	(2,119)
Business loans secured by real estate \| CRE owner-occupied
Loans Held for Investment
Loans held for investment	2,029,984	2,114,050
Allowance for credit losses for loans held for investment	(41,594)	(50,517)	(26,793)	(2,781)
Business loans secured by real estate \| Franchise real estate secured
Loans Held for Investment
Loans held for investment	340,805	347,932
Allowance for credit losses for loans held for investment	(10,876)	(11,451)	(7,503)	(592)
Commercial loans
Loans Held for Investment
Loans held for investment	2,070,047	2,229,588
Commercial loans \| Commercial and industrial
Loans Held for Investment
Loans held for investment	1,656,098	1,768,834
Allowance for credit losses for loans held for investment	(43,373)	(46,964)	(15,742)	(13,857)
Commercial loans \| Franchise non-real estate secured
Loans Held for Investment
Loans held for investment	399,041	444,797
Allowance for credit losses for loans held for investment	(18,903)	(20,525)	(16,616)	(5,816)
Commercial loans \| SBA non-real estate secured
Loans Held for Investment
Loans held for investment	14,908	15,957
Allowance for credit losses for loans held for investment	(890)	(995)	(516)	(445)
Retail loans
Loans Held for Investment
Loans held for investment	190,373	239,503
Retail loans \| Single family residential
Loans Held for Investment
Loans held for investment	184,049	232,574
Allowance for credit losses for loans held for investment	(822)	(1,204)	(1,137)	(655)
Retail loans \| Consumer
Loans Held for Investment
Loans held for investment	6,324	6,929
Allowance for credit losses for loans held for investment	$ (326)	$ (491)	$ (2,296)	$ (406)

Loans Held for Investment - Nar

Loans Held for Investment - Narrative (Details) investmentSecurity in Millions	Dec. 23, 2016USD ($)	Mar. 31, 2021USD ($)gradeloanarea	Mar. 31, 2020loaninvestmentSecurity	Dec. 31, 2020USD ($)loan	Jun. 01, 2020USD ($)
Loans Held for Investment
Loans held for investment		$ 13,117,392,000		$ 13,236,433,000
Servicing rights retained from guaranteed portion of SBA loans sold		4,600,000		5,300,000
Accrued expenses and other liabilities		218,582,000		243,207,000
Unpaid principal balance for loans and participations serviced for others		637,400,000		686,000,000
Secured loans limit to one borrower		812,900,000
Unsecured loans limit to one borrower		487,800,000
Aggregate outstanding balance of loans to one borrower of secured credit		$ 184,200,000
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		$ 38,900,000		29,200,000
ACL attributable to individually evaluated loans		688,000		126,000
Loans on nonaccrual status		$ 38,900,000		$ 29,200,000
Number of loans modified \| loan		0	1	0
Number of loans, subsequent default		0	1.3
Total nonaccrual loans		$ 38,909,000		$ 29,209,000
Consumer mortgage loans collateralized by residential real estate, foreclosure proceedings in process		0		$ 0
COVID-19 Related Loan Modifications
Loans Held for Investment
Number of loans modified \| loan				52
Total balance of loans modified				$ 79,500,000
Percentage of total loans held for investment				0.60%
COVID-19 Related Loan Modifications \| Substandard
Loans Held for Investment
Total balance of loans modified				$ 20,200,000
Discounted cash flow approach
Loans Held for Investment
Individually evaluated loans		16,900,000		15,200,000
Underlying value of the collateral
Loans Held for Investment
Individually evaluated loans		$ 22,000,000		14,000,000
Opus Bank \| Opus Bank
Loans Held for Investment
Loans held for investment					$ 5,940,000,000
Multifamily Loan Securitization, Liability \| Variable Interest Entity, Not Primary Beneficiary
Loans Held for Investment
Maximum loss, percentage of loans		10.00%
Multifamily Loan Securitization
Loans Held for Investment
Unpaid principal balance for loans and participations serviced for others		$ 95,500,000		99,400,000
Multifamily Loan Securitization \| Variable Interest Entity, Not Primary Beneficiary
Loans Held for Investment
Accrued expenses and other liabilities		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		398,200,000		421,700,000
Commercial loans
Loans Held for Investment
Loans held for investment		2,070,047,000		2,229,588,000
Total nonaccrual loans		19,384,000		17,919,000
Commercial loans \| Commercial and industrial
Loans Held for Investment
Loans held for investment		1,656,098,000		1,768,834,000
Total nonaccrual loans		5,610,000		3,974,000
Commercial loans \| Commercial and industrial \| Substandard
Loans Held for Investment
Loans held for investment		$ 40,853,000		$ 44,321,000

Loans Held for Investment - Int

Loans Held for Investment - Internal Risk Grading System under ASC 326 (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	$ 758,874	$ 1,862,085
Year two	1,837,742	3,354,750
Year three	3,184,608	2,140,513
Year four	1,974,365	1,729,763
Year five	1,623,130	1,072,603
Prior	2,947,726	2,152,690
Revolving	789,248	912,643
Revolving Converted to Term During the Period	1,699	11,386
Total	13,117,392	13,236,433
Investor loans secured by real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	541,743	1,351,350
Year two	1,354,913	2,386,517
Year three	2,301,001	1,437,278
Year four	1,352,833	988,649
Year five	938,701	674,159
Prior	1,909,229	1,374,935
Revolving	13,796	12,877
Revolving Converted to Term During the Period	0	0
Total	8,412,216	8,225,765
Investor loans secured by real estate \| CRE non-owner-occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Total	2,729,785	2,675,085
Investor loans secured by real estate \| CRE non-owner-occupied \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	124,225	265,901
Year two	272,001	541,994
Year three	501,036	440,351
Year four	482,052	287,580
Year five	278,439	279,238
Prior	972,783	791,477
Revolving	10,779	11,114
Revolving Converted to Term During the Period	0	0
Total	2,641,315	2,617,655
Investor loans secured by real estate \| CRE non-owner-occupied \| Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	0	0
Year two	0	0
Year three	2,004	6,669
Year four	8,619	437
Year five	438	2,516
Prior	43,694	29,738
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	54,755	39,360
Investor loans secured by real estate \| CRE non-owner-occupied \| Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	0	0
Year two	0	9,732
Year three	25,740	2,045
Year four	1,856	0
Year five	0	516
Prior	5,571	5,218
Revolving	548	559
Revolving Converted to Term During the Period	0	0
Total	33,715	18,070
Investor loans secured by real estate \| Multifamily
Financing Receivable, Credit Quality Indicator [Line Items]
Total	5,309,592	5,171,356
Investor loans secured by real estate \| Multifamily \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	405,022	1,027,644
Year two	1,005,928	1,677,716
Year three	1,626,859	899,123
Year four	791,365	665,939
Year five	629,525	354,859
Prior	834,458	531,287
Revolving	1,426	420
Revolving Converted to Term During the Period	0	0
Total	5,294,583	5,156,988
Investor loans secured by real estate \| Multifamily \| Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	0	0
Year two	0	1,758
Year three	1,755	2,630
Year four	2,629	0
Year five	0	8,649
Prior	9,294	0
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	13,678	13,037
Investor loans secured by real estate \| Multifamily \| Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	0	0
Year two	0	0
Year three	0	0
Year four	0	559
Year five	559	772
Prior	772	0
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	1,331	1,331
Investor loans secured by real estate \| Construction and land
Financing Receivable, Credit Quality Indicator [Line Items]
Total	316,458	321,993
Investor loans secured by real estate \| Construction and land \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	12,496	57,309
Year two	76,486	144,759
Year three	133,997	73,313
Year four	53,795	18,625
Year five	12,264	20,531
Prior	26,377	6,672
Revolving	1,043	784
Revolving Converted to Term During the Period	0	0
Total	316,458	321,993
Investor loans secured by real estate \| SBA secured by real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Total	56,381	57,331
Investor loans secured by real estate \| SBA secured by real estate \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	0	0
Year two	0	8,306
Year three	7,409	9,029
Year four	8,991	13,418
Year five	15,383	6,305
Prior	12,485	7,696
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	44,268	44,754
Investor loans secured by real estate \| SBA secured by real estate \| Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	0	496
Year two	498	1,032
Year three	1,033	1,159
Year four	1,161	1,000
Year five	1,002	373
Prior	1,124	306
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	4,818	4,366
Investor loans secured by real estate \| SBA secured by real estate \| Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	0	0
Year two	0	1,220
Year three	1,168	2,959
Year four	2,365	1,091
Year five	1,091	400
Prior	2,671	2,541
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	7,295	8,211
Business loans secured by real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	132,455	344,058
Year two	333,341	516,400
Year three	454,173	422,995
Year four	367,772	446,733
Year five	410,952	267,062
Prior	736,867	529,565
Revolving	9,196	14,518
Revolving Converted to Term During the Period	0	246
Total	2,444,756	2,541,577
Business loans secured by real estate \| CRE non-owner-occupied \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Year one		344,058
Year two		516,400
Year three		422,995
Year four		446,733
Year five		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	73,967	79,595
Business loans secured by real estate \| SBA secured by real estate \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	510	3,253
Year two	3,237	7,637
Year three	7,587	12,608
Year four	12,262	16,058
Year five	13,155	8,488
Prior	27,937	23,624
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	64,688	71,668
Business loans secured by real estate \| SBA secured by real estate \| Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	0	0
Year two	0	0
Year three	0	1,200
Year four	1,186	0
Year five	0	137
Prior	1,175	0
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	2,361	1,337
Business loans secured by real estate \| SBA secured by real estate \| Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	0	0
Year two	0	0
Year three	0	184
Year four	161	1,987
Year five	2,111	1,376
Prior	4,646	3,043
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	6,918	6,590
Business loans secured by real estate \| CRE owner-occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Total	2,029,984	2,114,050
Business loans secured by real estate \| CRE owner-occupied \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	108,753	293,324
Year two	283,401	409,758
Year three	373,667	332,672
Year four	280,703	327,475
Year five	304,938	225,098
Prior	638,844	469,704
Revolving	8,946	14,268
Revolving Converted to Term During the Period	0	246
Total	1,999,252	2,072,545
Business loans secured by real estate \| CRE owner-occupied \| Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	0	2,190
Year two	2,190	15,917
Year three	0	3,802
Year four	3,792	0
Year five	3,045	4,153
Prior	4,319	201
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	13,346	26,263
Business loans secured by real estate \| CRE owner-occupied \| Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	0	0
Year two	0	0
Year three	0	3,636
Year four	4,143	4,214
Year five	5,884	1,169
Prior	7,109	5,973
Revolving	250	250
Revolving Converted to Term During the Period	0	0
Total	17,386	15,242
Business loans secured by real estate \| Franchise real estate secured
Financing Receivable, Credit Quality Indicator [Line Items]
Total	340,805	347,932
Business loans secured by real estate \| Franchise real estate secured \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	23,192	44,413
Year two	43,635	81,438
Year three	71,269	66,241
Year four	62,905	96,999
Year five	81,819	24,673
Prior	52,837	27,020
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	335,657	340,784
Business loans secured by real estate \| Franchise real estate secured \| Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	0	878
Year two	878	1,650
Year three	1,650	2,652
Year four	2,620	0
Year five	0	0
Prior	0	0
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	5,148	5,180
Business loans secured by real estate \| Franchise real estate secured \| Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Year one		0
Year two		0
Year three		0
Year four		0
Year five		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]
Year one	78,092	155,831
Year two	141,817	444,000
Year three	424,977	266,221
Year four	243,017	280,317
Year five	262,286	97,412
Prior	176,638	120,099
Revolving	741,521	854,568
Revolving Converted to Term During the Period	1,699	11,140
Total	2,070,047	2,229,588
Commercial loans \| Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Total	1,656,098	1,768,834
Commercial loans \| Commercial and industrial \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	62,622	127,082
Year two	112,135	260,368
Year three	272,585	159,001
Year four	142,706	210,163
Year five	195,658	51,800
Prior	112,930	82,291
Revolving	694,022	801,752
Revolving Converted to Term During the Period	1,699	9,315
Total	1,594,357	1,701,772
Commercial loans \| Commercial and industrial \| Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	0	735
Year two	655	0
Year three	0	2,331
Year four	2,219	185
Year five	177	1,320
Prior	1,460	243
Revolving	16,377	17,890
Revolving Converted to Term During the Period	0	37
Total	20,888	22,741
Commercial loans \| Commercial and industrial \| Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	0	0
Year two	1,389	3,310
Year three	2,936	2,737
Year four	3,619	610
Year five	218	1,333
Prior	3,622	2,446
Revolving	29,069	32,858
Revolving Converted to Term During the Period	0	1,027
Total	40,853	44,321
Commercial loans \| Franchise non-real estate secured
Financing Receivable, Credit Quality Indicator [Line Items]
Total	399,041	444,797
Commercial loans \| Franchise non-real estate secured \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	15,398	27,607
Year two	27,216	164,025
Year three	138,064	94,494
Year four	86,988	46,174
Year five	43,294	40,829
Prior	50,126	27,745
Revolving	1,361	1,361
Revolving Converted to Term During the Period	0	502
Total	362,447	402,737
Commercial loans \| Franchise non-real estate secured \| Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	0	0
Year two	0	7,267
Year three	7,028	2,037
Year four	1,984	230
Year five	216	480
Prior	2,605	2,321
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	11,833	12,335
Commercial loans \| Franchise non-real estate secured \| Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	0	0
Year two	0	6,690
Year three	2,071	3,706
Year four	3,637	18,425
Year five	18,181	700
Prior	872	204
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	24,761	29,725
Commercial loans \| SBA non-real estate secured
Financing Receivable, Credit Quality Indicator [Line Items]
Total	14,908	15,957
Commercial loans \| SBA non-real estate secured \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	72	407
Year two	422	2,257
Year three	2,212	1,558
Year four	1,511	2,674
Year five	2,816	610
Prior	4,337	4,449
Revolving	0	0
Revolving Converted to Term During the Period	0	259
Total	11,370	12,214
Commercial loans \| SBA non-real estate secured \| Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	0	0
Year two	0	0
Year three	0	0
Year four	0	1,574
Year five	1,456	0
Prior	0	0
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	1,456	1,574
Commercial loans \| SBA non-real estate secured \| Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	0	0
Year two	0	83
Year three	81	357
Year four	353	282
Year five	270	340
Prior	686	400
Revolving	692	707
Revolving Converted to Term During the Period	0	0
Total	2,082	2,169
Retail loans
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	6,584	10,846
Year two	7,671	7,833
Year three	4,457	14,019
Year four	10,743	14,064
Year five	11,191	33,970
Prior	124,992	128,091
Revolving	24,735	30,680
Revolving Converted to Term During the Period	0	0
Total	190,373	239,503
Retail loans \| Single family residential
Financing Receivable, Credit Quality Indicator [Line Items]
Total	184,049	232,574
Retail loans \| Single family residential \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	6,582	10,794
Year two	7,624	7,714
Year three	4,349	13,982
Year four	10,708	14,039
Year five	11,169	33,968
Prior	120,675	124,248
Revolving	22,662	27,172
Revolving Converted to Term During the Period	0	0
Total	183,769	231,917
Retail loans \| Single family residential \| Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	0	0
Year two	0	0
Year three	0	0
Year four	0	0
Year five	0	0
Prior	280	657
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	280	657
Retail loans \| Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Total	6,324	6,929
Retail loans \| Consumer \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	2	52
Year two	47	112
Year three	101	37
Year four	35	25
Year five	22	2
Prior	3,998	3,145
Revolving	2,073	3,508
Revolving Converted to Term During the Period	0	0
Total	6,278	6,881
Retail loans \| Consumer \| Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	0	0
Year two	0	7
Year three	7	0
Year four	0	0
Year five	0	0
Prior	39	41
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	$ 46	$ 48

Loans Held for Investment - Del

Loans Held for Investment - Delinquencies (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable, Past Due [Line Items]
Total	$ 13,117,392	$ 13,236,433
Current
Financing Receivable, Past Due [Line Items]
Current	13,094,805	13,223,111
30-59
Financing Receivable, Past Due [Line Items]
Days Past Due	13,116	1,269
60-89
Financing Receivable, Past Due [Line Items]
Days Past Due	61	57
90
Financing Receivable, Past Due [Line Items]
Days Past Due	9,410	11,996
Investor loans secured by real estate
Financing Receivable, Past Due [Line Items]
Total	8,412,216	8,225,765
Investor loans secured by real estate \| CRE non-owner-occupied
Financing Receivable, Past Due [Line Items]
Total	2,729,785	2,675,085
Investor loans secured by real estate \| Multifamily
Financing Receivable, Past Due [Line Items]
Total	5,309,592	5,171,356
Investor loans secured by real estate \| Construction and land
Financing Receivable, Past Due [Line Items]
Total	316,458	321,993
Investor loans secured by real estate \| SBA secured by real estate
Financing Receivable, Past Due [Line Items]
Total	56,381	57,331
Investor loans secured by real estate \| Current
Financing Receivable, Past Due [Line Items]
Current	8,401,485	8,223,750
Investor loans secured by real estate \| Current \| CRE non-owner-occupied
Financing Receivable, Past Due [Line Items]
Current	2,719,494	2,674,328
Investor loans secured by real estate \| Current \| Multifamily
Financing Receivable, Past Due [Line Items]
Current	5,309,592	5,171,355
Investor loans secured by real estate \| Current \| Construction and land
Financing Receivable, Past Due [Line Items]
Current	316,458	321,993
Investor loans secured by real estate \| Current \| SBA secured by real estate
Financing Receivable, Past Due [Line Items]
Current	55,941	56,074
Investor loans secured by real estate \| 30-59
Financing Receivable, Past Due [Line Items]
Days Past Due	9,743	1
Investor loans secured by real estate \| 30-59 \| CRE non-owner-occupied
Financing Receivable, Past Due [Line Items]
Days Past Due	9,743	0
Investor loans secured by real estate \| 30-59 \| Multifamily
Financing Receivable, Past Due [Line Items]
Days Past Due	0	1
Investor loans secured by real estate \| 30-59 \| Construction and land
Financing Receivable, Past Due [Line Items]
Days Past Due	0	0
Investor loans secured by real estate \| 30-59 \| SBA secured by real estate
Financing Receivable, Past Due [Line Items]
Days Past Due	0	0
Investor loans secured by real estate \| 60-89
Financing Receivable, Past Due [Line Items]
Days Past Due	0	0
Investor loans secured by real estate \| 60-89 \| CRE non-owner-occupied
Financing Receivable, Past Due [Line Items]
Days Past Due	0	0
Investor loans secured by real estate \| 60-89 \| Multifamily
Financing Receivable, Past Due [Line Items]
Days Past Due	0	0
Investor loans secured by real estate \| 60-89 \| Construction and land
Financing Receivable, Past Due [Line Items]
Days Past Due	0	0
Investor loans secured by real estate \| 60-89 \| SBA secured by real estate
Financing Receivable, Past Due [Line Items]
Days Past Due	0	0
Investor loans secured by real estate \| 90
Financing Receivable, Past Due [Line Items]
Days Past Due	988	2,014
Investor loans secured by real estate \| 90 \| CRE non-owner-occupied
Financing Receivable, Past Due [Line Items]
Days Past Due	548	757
Investor loans secured by real estate \| 90 \| Multifamily
Financing Receivable, Past Due [Line Items]
Days Past Due	0	0
Investor loans secured by real estate \| 90 \| Construction and land
Financing Receivable, Past Due [Line Items]
Days Past Due	0	0
Investor loans secured by real estate \| 90 \| SBA secured by real estate
Financing Receivable, Past Due [Line Items]
Days Past Due	440	1,257
Business loans secured by real estate
Financing Receivable, Past Due [Line Items]
Total	2,444,756	2,541,577
Business loans secured by real estate \| SBA secured by real estate
Financing Receivable, Past Due [Line Items]
Total	73,967	79,595
Business loans secured by real estate \| CRE owner-occupied
Financing Receivable, Past Due [Line Items]
Total	2,029,984	2,114,050
Business loans secured by real estate \| Franchise real estate secured
Financing Receivable, Past Due [Line Items]
Total	340,805	347,932
Business loans secured by real estate \| Current
Financing Receivable, Past Due [Line Items]
Current	2,438,792	2,534,714
Business loans secured by real estate \| Current \| SBA secured by real estate
Financing Receivable, Past Due [Line Items]
Current	73,307	78,036
Business loans secured by real estate \| Current \| CRE owner-occupied
Financing Receivable, Past Due [Line Items]
Current	2,024,680	2,108,746
Business loans secured by real estate \| Current \| Franchise real estate secured
Financing Receivable, Past Due [Line Items]
Current	340,805	347,932
Business loans secured by real estate \| 30-59
Financing Receivable, Past Due [Line Items]
Days Past Due	0	486
Business loans secured by real estate \| 30-59 \| SBA secured by real estate
Financing Receivable, Past Due [Line Items]
Days Past Due	0	486
Business loans secured by real estate \| 30-59 \| CRE owner-occupied
Financing Receivable, Past Due [Line Items]
Days Past Due	0	0
Business loans secured by real estate \| 30-59 \| Franchise real estate secured
Financing Receivable, Past Due [Line Items]
Days Past Due	0	0
Business loans secured by real estate \| 60-89
Financing Receivable, Past Due [Line Items]
Days Past Due	0	0
Business loans secured by real estate \| 60-89 \| SBA secured by real estate
Financing Receivable, Past Due [Line Items]
Days Past Due	0	0
Business loans secured by real estate \| 60-89 \| CRE owner-occupied
Financing Receivable, Past Due [Line Items]
Days Past Due	0	0
Business loans secured by real estate \| 60-89 \| Franchise real estate secured
Financing Receivable, Past Due [Line Items]
Days Past Due	0	0
Business loans secured by real estate \| 90
Financing Receivable, Past Due [Line Items]
Days Past Due	5,964	6,377
Business loans secured by real estate \| 90 \| SBA secured by real estate
Financing Receivable, Past Due [Line Items]
Days Past Due	660	1,073
Business loans secured by real estate \| 90 \| CRE owner-occupied
Financing Receivable, Past Due [Line Items]
Days Past Due	5,304	5,304
Business loans secured by real estate \| 90 \| Franchise real estate secured
Financing Receivable, Past Due [Line Items]
Days Past Due	0	0
Commercial loans
Financing Receivable, Past Due [Line Items]
Total	2,070,047	2,229,588
Commercial loans \| Commercial and industrial
Financing Receivable, Past Due [Line Items]
Total	1,656,098	1,768,834
Commercial loans \| Franchise non-real estate secured
Financing Receivable, Past Due [Line Items]
Total	399,041	444,797
Commercial loans \| SBA non-real estate secured
Financing Receivable, Past Due [Line Items]
Total	14,908	15,957
Commercial loans \| Current
Financing Receivable, Past Due [Line Items]
Current	2,064,155	2,225,160
Commercial loans \| Current \| Commercial and industrial
Financing Receivable, Past Due [Line Items]
Current	1,651,203	1,765,451
Commercial loans \| Current \| Franchise non-real estate secured
Financing Receivable, Past Due [Line Items]
Current	399,041	444,797
Commercial loans \| Current \| SBA non-real estate secured
Financing Receivable, Past Due [Line Items]
Current	13,911	14,912
Commercial loans \| 30-59
Financing Receivable, Past Due [Line Items]
Days Past Due	3,373	766
Commercial loans \| 30-59 \| Commercial and industrial
Financing Receivable, Past Due [Line Items]
Days Past Due	3,068	428
Commercial loans \| 30-59 \| Franchise non-real estate secured
Financing Receivable, Past Due [Line Items]
Days Past Due	0	0
Commercial loans \| 30-59 \| SBA non-real estate secured
Financing Receivable, Past Due [Line Items]
Days Past Due	305	338
Commercial loans \| 60-89
Financing Receivable, Past Due [Line Items]
Days Past Due	61	57
Commercial loans \| 60-89 \| Commercial and industrial
Financing Receivable, Past Due [Line Items]
Days Past Due	61	57
Commercial loans \| 60-89 \| Franchise non-real estate secured
Financing Receivable, Past Due [Line Items]
Days Past Due	0	0
Commercial loans \| 60-89 \| SBA non-real estate secured
Financing Receivable, Past Due [Line Items]
Days Past Due	0	0
Commercial loans \| 90
Financing Receivable, Past Due [Line Items]
Days Past Due	2,458	3,605
Commercial loans \| 90 \| Commercial and industrial
Financing Receivable, Past Due [Line Items]
Days Past Due	1,766	2,898
Commercial loans \| 90 \| Franchise non-real estate secured
Financing Receivable, Past Due [Line Items]
Days Past Due	0	0
Commercial loans \| 90 \| SBA non-real estate secured
Financing Receivable, Past Due [Line Items]
Days Past Due	692	707
Retail loans
Financing Receivable, Past Due [Line Items]
Total	190,373	239,503
Retail loans \| Single family residential
Financing Receivable, Past Due [Line Items]
Total	184,049	232,574
Retail loans \| Consumer
Financing Receivable, Past Due [Line Items]
Total	6,324	6,929
Retail loans \| Current
Financing Receivable, Past Due [Line Items]
Current	190,373	239,487
Retail loans \| Current \| Single family residential
Financing Receivable, Past Due [Line Items]
Current	184,049	232,559
Retail loans \| Current \| Consumer
Financing Receivable, Past Due [Line Items]
Current	6,324	6,928
Retail loans \| 30-59
Financing Receivable, Past Due [Line Items]
Days Past Due	0	16
Retail loans \| 30-59 \| Single family residential
Financing Receivable, Past Due [Line Items]
Days Past Due	0	15
Retail loans \| 30-59 \| Consumer
Financing Receivable, Past Due [Line Items]
Days Past Due	0	1
Retail loans \| 60-89
Financing Receivable, Past Due [Line Items]
Days Past Due	0	0
Retail loans \| 60-89 \| Single family residential
Financing Receivable, Past Due [Line Items]
Days Past Due	0	0
Retail loans \| 60-89 \| Consumer
Financing Receivable, Past Due [Line Items]
Days Past Due	0	0
Retail loans \| 90
Financing Receivable, Past Due [Line Items]
Days Past Due	0	0
Retail loans \| 90 \| Single family residential
Financing Receivable, Past Due [Line Items]
Days Past Due	0	0
Retail loans \| 90 \| Consumer
Financing Receivable, Past Due [Line Items]
Days Past Due	$ 0	$ 0

Loans Held for Investment - Sum

Loans Held for Investment - Summary of Nonaccrual Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable, Nonaccrual [Line Items]
Collateral Dependent Loans	$ 21,984	$ 14,037
ACL	0	0
Non-Collateral Dependent Loans	16,925	15,172
ACL	688	126
Total Nonaccrual Loans	38,909	29,209
Nonaccrual Loans with No ACL	35,431	27,968
Investor loans secured by real estate
Financing Receivable, Nonaccrual [Line Items]
Collateral Dependent Loans	12,724	4,049
ACL	0	0
Non-Collateral Dependent Loans	0	0
ACL	0	0
Total Nonaccrual Loans	12,724	4,049
Nonaccrual Loans with No ACL	12,724	4,049
Investor loans secured by real estate \| CRE non-owner-occupied
Financing Receivable, Nonaccrual [Line Items]
Collateral Dependent Loans	12,284	2,792
ACL	0	0
Non-Collateral Dependent Loans	0	0
ACL	0	0
Total Nonaccrual Loans	12,284	2,792
Nonaccrual Loans with No ACL	12,284	2,792
Investor loans secured by real estate \| SBA secured by real estate
Financing Receivable, Nonaccrual [Line Items]
Collateral Dependent Loans	440	1,257
ACL	0	0
Non-Collateral Dependent Loans	0	0
ACL	0	0
Total Nonaccrual Loans	440	1,257
Nonaccrual Loans with No ACL	440	1,257
Business loans secured by real estate
Financing Receivable, Nonaccrual [Line Items]
Collateral Dependent Loans	6,787	7,226
ACL	0	0
Non-Collateral Dependent Loans	0	0
ACL	0	0
Total Nonaccrual Loans	6,787	7,226
Nonaccrual Loans with No ACL	6,787	7,226
Business loans secured by real estate \| SBA secured by real estate
Financing Receivable, Nonaccrual [Line Items]
Collateral Dependent Loans	727	1,143
ACL	0	0
Non-Collateral Dependent Loans	0	0
ACL	0	0
Total Nonaccrual Loans	727	1,143
Nonaccrual Loans with No ACL	727	1,143
Business loans secured by real estate \| CRE owner-occupied
Financing Receivable, Nonaccrual [Line Items]
Collateral Dependent Loans	6,060	6,083
ACL	0	0
Non-Collateral Dependent Loans	0	0
ACL	0	0
Total Nonaccrual Loans	6,060	6,083
Nonaccrual Loans with No ACL	6,060	6,083
Commercial loans
Financing Receivable, Nonaccrual [Line Items]
Collateral Dependent Loans	2,459	2,747
ACL	0	0
Non-Collateral Dependent Loans	16,925	15,172
ACL	688	126
Total Nonaccrual Loans	19,384	17,919
Nonaccrual Loans with No ACL	15,906	16,678
Commercial loans \| Commercial and industrial
Financing Receivable, Nonaccrual [Line Items]
Collateral Dependent Loans	1,767	2,040
ACL	0	0
Non-Collateral Dependent Loans	3,843	1,934
ACL	688	126
Total Nonaccrual Loans	5,610	3,974
Nonaccrual Loans with No ACL	2,132	2,733
Commercial loans \| Franchise non-real estate secured
Financing Receivable, Nonaccrual [Line Items]
Collateral Dependent Loans	0	0
ACL	0	0
Non-Collateral Dependent Loans	13,082	13,238
ACL	0	0
Total Nonaccrual Loans	13,082	13,238
Nonaccrual Loans with No ACL	13,082	13,238
Commercial loans \| SBA non-real estate secured
Financing Receivable, Nonaccrual [Line Items]
Collateral Dependent Loans	692	707
ACL	0	0
Non-Collateral Dependent Loans	0	0
ACL	0	0
Total Nonaccrual Loans	692	707
Nonaccrual Loans with No ACL	692	707
Retail loans
Financing Receivable, Nonaccrual [Line Items]
Collateral Dependent Loans	14	15
ACL	0	0
Non-Collateral Dependent Loans	0	0
ACL	0	0
Total Nonaccrual Loans	14	15
Nonaccrual Loans with No ACL	14	15
Retail loans \| Single family residential
Financing Receivable, Nonaccrual [Line Items]
Collateral Dependent Loans	14	15
ACL	0	0
Non-Collateral Dependent Loans	0	0
ACL	0	0
Total Nonaccrual Loans	14	15
Nonaccrual Loans with No ACL	$ 14	$ 15

Loans Held for Investment - Col

Loans Held for Investment - Collateral Dependent Loans by Collateral Type (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	$ 21,984	$ 14,037
Office Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	270	288
Industrial Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	1,213	1,536
Retail Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	2,542	2,594
Land Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	5,304	5,304
Hotel Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	10,182	1,455
Residential Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	14	113
Business Assets
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	2,459	2,747
Investor loans secured by real estate
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	12,724	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	2,542	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	10,182	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	12,284	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	2,542	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	440	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	440	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	6,787	7,226
Business loans secured by real estate \| Office Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	270	288
Business loans secured by real estate \| Industrial Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	1,213	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	5,304	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	727	1,143
Business loans secured by real estate \| SBA secured by real estate \| Office Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	270	288
Business loans secured by real estate \| SBA secured by real estate \| Industrial Properties
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	457	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	6,060	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	756	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	5,304	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	2,459	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	0	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	0	0
Commercial loans \| Business Assets
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	2,459	2,747
Commercial loans \| Commercial and industrial
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	1,767	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	0	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	0	0
Commercial loans \| Commercial and industrial \| Business Assets
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	1,767	2,040
Commercial loans \| SBA non-real estate secured
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	692	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	692	707
Retail loans
Financing Receivable, Past Due [Line Items]
Collateral dependent loans	14	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	14	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	14	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	14	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	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Jan. 01, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Qualitative adjustments included in the ACL	$ 8,000
Increase (decrease) in ACL during period	(1,000)	$ 79,700
Provision for Credit Losses	315	25,382
Net charge-offs	1,300	1,300
Loans held for investment	13,117,392		$ 13,236,433
Off-balance sheet, credit loss, liability	32,800	11,600	$ 31,100
Provision for credit losses for off-balance sheet commitments	1,700	$ 72
Cumulative effect of the change in accounting principle
Financing Receivable, Allowance for Credit Loss [Line Items]
Provision for Credit Losses	$ 25,400
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
	Mar. 31, 2021	Mar. 31, 2020
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance	$ 268,018	$ 35,698
Charge-offs	(1,952)	(1,436)
Recoveries	618	92
Provision for Credit Losses	315	25,382
Ending ACL Balance	266,999	115,422
Cumulative effect of the change in accounting principle
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance		55,686
Provision for Credit Losses	25,400
Investor loans secured by real estate \| CRE non-owner-occupied
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance	49,176	1,899
Charge-offs	(154)	(387)
Recoveries	0	0
Provision for Credit Losses	(3,477)	5,961
Ending ACL Balance	45,545	15,896
Investor loans secured by real estate \| CRE non-owner-occupied \| Cumulative effect of the change in accounting principle
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance		8,423
Investor loans secured by real estate \| Multifamily
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance	62,534	729
Charge-offs	0	0
Recoveries	0	0
Provision for Credit Losses	17,281	4,819
Ending ACL Balance	79,815	14,722
Investor loans secured by real estate \| Multifamily \| Cumulative effect of the change in accounting principle
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance		9,174
Investor loans secured by real estate \| Construction and land
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance	12,435	4,484
Charge-offs	0	0
Recoveries	0	0
Provision for Credit Losses	828	4,862
Ending ACL Balance	13,263	9,222
Investor loans secured by real estate \| Construction and land \| Cumulative effect of the change in accounting principle
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance		(124)
Investor loans secured by real estate \| SBA secured by real estate
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance	5,159	1,915
Charge-offs	(265)	0
Recoveries	0	0
Provision for Credit Losses	247	421
Ending ACL Balance	5,141	935
Investor loans secured by real estate \| SBA secured by real estate \| Cumulative effect of the change in accounting principle
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance		(1,401)
Business loans secured by real estate \| SBA secured by real estate
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance	6,567	2,119
Charge-offs	(98)	(315)
Recoveries	0	71
Provision for Credit Losses	(18)	(38)
Ending ACL Balance	6,451	4,044
Business loans secured by real estate \| SBA secured by real estate \| Cumulative effect of the change in accounting principle
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance		2,207
Business loans secured by real estate \| CRE owner-occupied
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance	50,517	2,781
Charge-offs	0	0
Recoveries	15	12
Provision for Credit Losses	(8,938)	3,834
Ending ACL Balance	41,594	26,793
Business loans secured by real estate \| CRE owner-occupied \| Cumulative effect of the change in accounting principle
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance		20,166
Business loans secured by real estate \| Franchise real estate secured
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance	11,451	592
Charge-offs	0	0
Recoveries	0	0
Provision for Credit Losses	(575)	1,712
Ending ACL Balance	10,876	7,503
Business loans secured by real estate \| Franchise real estate secured \| Cumulative effect of the change in accounting principle
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance		5,199
Commercial loans \| Commercial and industrial
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance	46,964	13,857
Charge-offs	(1,279)	(490)
Recoveries	601	5
Provision for Credit Losses	(2,913)	2,283
Ending ACL Balance	43,373	15,742
Commercial loans \| Commercial and industrial \| Cumulative effect of the change in accounting principle
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance		87
Commercial loans \| Franchise non-real estate secured
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance	20,525	5,816
Charge-offs	(156)	0
Recoveries	0	0
Provision for Credit Losses	(1,466)	1,586
Ending ACL Balance	18,903	16,616
Commercial loans \| Franchise non-real estate secured \| Cumulative effect of the change in accounting principle
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance		9,214
Commercial loans \| SBA non-real estate secured
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance	995	445
Charge-offs	0	(236)
Recoveries	2	4
Provision for Credit Losses	(107)	85
Ending ACL Balance	890	516
Commercial loans \| SBA non-real estate secured \| Cumulative effect of the change in accounting principle
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance		218
Retail loans \| Single family residential
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance	1,204	655
Charge-offs	0	0
Recoveries	0	0
Provision for Credit Losses	(382)	(59)
Ending ACL Balance	822	1,137
Retail loans \| Single family residential \| Cumulative effect of the change in accounting principle
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance		541
Retail loans \| Consumer
Allocation of allowance as well as the activity in allowance
Beginning ACL Balance	491	406
Charge-offs	0	(8)
Recoveries	0	0
Provision for Credit Losses	(165)	(84)
Ending ACL Balance	$ 326	2,296
Retail loans \| Consumer \| Cumulative effect of the change in accounting principle
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	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	$ 758,874	$ 1,862,085
Year two	1,837,742	3,354,750
Year three	3,184,608	2,140,513
Year four	1,974,365	1,729,763
Year five	1,623,130	1,072,603
Prior	2,947,726	2,152,690
Revolving	789,248	912,643
Revolving Converted to Term During the Period	1,699	11,386
Total	13,117,392	13,236,433
Investor loans secured by real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	541,743	1,351,350
Year two	1,354,913	2,386,517
Year three	2,301,001	1,437,278
Year four	1,352,833	988,649
Year five	938,701	674,159
Prior	1,909,229	1,374,935
Revolving	13,796	12,877
Revolving Converted to Term During the Period	0	0
Total	8,412,216	8,225,765
Investor loans secured by real estate \| CRE non-owner-occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total	2,729,785	2,675,085
Investor loans secured by real estate \| CRE non-owner-occupied \| 0% - 5.00%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	124,225	261,885
Year two	244,225	491,522
Year three	447,464	431,791
Year four	445,435	266,942
Year five	223,077	254,527
Prior	927,154	763,101
Revolving	10,779	11,114
Revolving Converted to Term During the Period	0	0
Total	2,422,359	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]
Year one	0	4,016
Year two	25,477	34,360
Year three	9,581	5,794
Year four	14,151	10,558
Year five	12,408	16,961
Prior	73,255	33,734
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	134,872	105,423
Investor loans secured by real estate \| CRE non-owner-occupied \| Greater than 10%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	0	0
Year two	2,299	25,844
Year three	71,735	11,480
Year four	32,941	10,517
Year five	43,392	10,782
Prior	21,639	29,598
Revolving	548	559
Revolving Converted to Term During the Period	0	0
Total	172,554	88,780
Investor loans secured by real estate \| Multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Total	5,309,592	5,171,356
Investor loans secured by real estate \| Multifamily \| 0% - 5.00%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	372,435	950,089
Year two	946,666	1,610,011
Year three	1,564,508	878,233
Year four	763,445	634,268
Year five	611,026	349,549
Prior	812,130	516,452
Revolving	1,426	0
Revolving Converted to Term During the Period	0	0
Total	5,071,636	4,938,602
Investor loans secured by real estate \| Multifamily \| >5.00% - 10.00%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	32,587	38,892
Year two	5,858	59,500
Year three	51,975	12,181
Year four	17,181	19,751
Year five	6,602	10,917
Prior	17,328	13,606
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	131,531	154,847
Investor loans secured by real estate \| Multifamily \| Greater than 10%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	0	38,663
Year two	53,404	9,963
Year three	12,131	11,339
Year four	13,368	12,479
Year five	12,456	3,814
Prior	15,066	1,229
Revolving	0	420
Revolving Converted to Term During the Period	0	0
Total	106,425	77,907
Investor loans secured by real estate \| Construction and land
Financing Receivable, Allowance for Credit Loss [Line Items]
Total	316,458	321,993
Investor loans secured by real estate \| Construction and land \| 0% - 5.00%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	12,496	55,785
Year two	65,447	40,860
Year three	28,996	4,604
Year four	1,425	11,238
Year five	4,081	0
Prior	5,139	6,412
Revolving	1,043	784
Revolving Converted to Term During the Period	0	0
Total	118,627	119,683
Investor loans secured by real estate \| Construction and land \| >5.00% - 10.00%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	0	1,123
Year two	7,462	41,046
Year three	45,561	9,197
Year four	0	3,601
Year five	3,785	0
Prior	71	260
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	56,879	55,227
Investor loans secured by real estate \| Construction and land \| Greater than 10%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	0	401
Year two	3,577	62,853
Year three	59,440	59,512
Year four	52,370	3,786
Year five	4,398	20,531
Prior	21,167	0
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	140,952	147,083
Investor loans secured by real estate \| SBA secured by real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total	56,381	57,331
Investor loans secured by real estate \| SBA secured by real estate \| 0% - 5.00%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	0	496
Year two	498	10,400
Year three	9,508	12,558
Year four	12,517	14,497
Year five	17,476	7,078
Prior	15,942	10,032
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	55,941	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]
Year one	0	0
Year two	0	0
Year three	0	0
Year four	0	1,012
Year five	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]
Year one	0	0
Year two	0	158
Year three	102	589
Year four	0	0
Year five	0	0
Prior	338	511
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	440	1,258
Business loans secured by real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	132,455	344,058
Year two	333,341	516,400
Year three	454,173	422,995
Year four	367,772	446,733
Year five	410,952	267,062
Prior	736,867	529,565
Revolving	9,196	14,518
Revolving Converted to Term During the Period	0	246
Total	2,444,756	2,541,577
Business loans secured by real estate \| SBA secured by real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total	73,967	79,595
Business loans secured by real estate \| SBA secured by real estate \| 0% - 5.00%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	510	3,253
Year two	3,237	7,637
Year three	7,517	11,840
Year four	11,357	15,069
Year five	11,448	5,707
Prior	21,384	18,742
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	55,453	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]
Year one	0	0
Year two	0	0
Year three	70	768
Year four	905	989
Year five	1,694	2,780
Prior	6,502	4,882
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	9,171	9,419
Business loans secured by real estate \| SBA secured by real estate \| Greater than 10%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	0	0
Year two	0	0
Year three	0	1,384
Year four	1,347	1,987
Year five	2,124	1,514
Prior	5,872	3,043
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	9,343	7,928
Business loans secured by real estate \| CRE owner-occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total	2,029,984	2,114,050
Business loans secured by real estate \| CRE owner-occupied \| 0% - 5.00%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	108,753	286,745
Year two	274,558	367,269
Year three	358,652	274,512
Year four	251,081	295,809
Year five	274,570	202,282
Prior	588,999	422,614
Revolving	8,946	10,393
Revolving Converted to Term During the Period	0	246
Total	1,865,559	1,859,870
Business loans secured by real estate \| CRE owner-occupied \| >5.00% - 10.00%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	0	8,769
Year two	11,033	42,310
Year three	15,015	60,222
Year four	31,674	28,421
Year five	30,254	23,875
Prior	51,484	44,855
Revolving	0	3,875
Revolving Converted to Term During the Period	0	0
Total	139,460	212,327
Business loans secured by real estate \| CRE owner-occupied \| Greater than 10%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	0	0
Year two	0	16,096
Year three	0	5,376
Year four	5,883	7,459
Year five	9,043	4,263
Prior	9,789	8,409
Revolving	250	250
Revolving Converted to Term During the Period	0	0
Total	24,965	41,853
Business loans secured by real estate \| Franchise real estate secured
Financing Receivable, Allowance for Credit Loss [Line Items]
Total	340,805	347,932
Business loans secured by real estate \| Franchise real estate secured \| 0% - 5.00%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	23,192	37,262
Year two	36,483	79,926
Year three	69,701	65,619
Year four	58,245	96,672
Year five	80,716	19,046
Prior	36,800	22,927
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	305,137	321,452
Business loans secured by real estate \| Franchise real estate secured \| >5.00% - 10.00%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	0	7,587
Year two	7,588	1,650
Year three	3,218	3,274
Year four	7,280	327
Year five	1,103	5,627
Prior	16,037	4,093
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	35,226	22,558
Business loans secured by real estate \| Franchise real estate secured \| Greater than 10%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	0	442
Year two	442	1,512
Year three	0	0
Year four	0	0
Year five	0	1,968
Prior	0	0
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	442	3,922
Commercial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	78,092	155,831
Year two	141,817	444,000
Year three	424,977	266,221
Year four	243,017	280,317
Year five	262,286	97,412
Prior	176,638	120,099
Revolving	741,521	854,568
Revolving Converted to Term During the Period	1,699	11,140
Total	2,070,047	2,229,588
Commercial loans \| Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Total	1,656,098	1,768,834
Commercial loans \| Commercial and industrial \| 0% - 5.00%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	61,115	70,233
Year two	76,872	205,395
Year three	223,574	99,178
Year four	101,069	193,046
Year five	182,673	36,957
Prior	90,115	62,682
Revolving	316,224	394,124
Revolving Converted to Term During the Period	1,113	5,051
Total	1,052,755	1,066,666
Commercial loans \| Commercial and industrial \| >5.00% - 10.00%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	1,507	49,883
Year two	28,732	50,743
Year three	31,098	35,813
Year four	25,613	13,427
Year five	10,383	12,922
Prior	16,090	13,948
Revolving	305,405	322,123
Revolving Converted to Term During the Period	101	2,469
Total	418,929	501,328
Commercial loans \| Commercial and industrial \| Greater than 10%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	0	7,701
Year two	8,575	7,540
Year three	20,849	29,078
Year four	21,862	4,485
Year five	2,997	4,574
Prior	11,807	8,350
Revolving	117,839	136,253
Revolving Converted to Term During the Period	485	2,859
Total	184,414	200,840
Commercial loans \| Franchise non-real estate secured
Financing Receivable, Allowance for Credit Loss [Line Items]
Total	399,041	444,797
Commercial loans \| Franchise non-real estate secured \| 0% - 5.00%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	15,398	21,409
Year two	21,160	145,392
Year three	102,790	88,171
Year four	78,320	38,010
Year five	34,932	21,956
Prior	31,020	23,479
Revolving	0	0
Revolving Converted to Term During the Period	0	502
Total	283,620	338,919
Commercial loans \| Franchise non-real estate secured \| >5.00% - 10.00%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	0	6,198
Year two	6,056	15,754
Year three	35,273	5,454
Year four	8,527	8,164
Year five	8,362	18,415
Prior	18,588	3,626
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	76,806	57,611
Commercial loans \| Franchise non-real estate secured \| Greater than 10%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	0	0
Year two	0	16,836
Year three	9,100	6,612
Year four	5,762	18,655
Year five	18,397	1,638
Prior	3,995	3,165
Revolving	1,361	1,361
Revolving Converted to Term During the Period	0	0
Total	38,615	48,267
Commercial loans \| SBA non-real estate secured
Financing Receivable, Allowance for Credit Loss [Line Items]
Total	14,908	15,957
Commercial loans \| SBA non-real estate secured \| 0% - 5.00%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	72	407
Year two	422	2,257
Year three	2,212	910
Year four	1,021	1,078
Year five	1,299	441
Prior	3,230	2,782
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	8,256	7,875
Commercial loans \| SBA non-real estate secured \| >5.00% - 10.00%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	0	0
Year two	0	0
Year three	0	648
Year four	490	1,596
Year five	1,518	169
Prior	1,102	1,652
Revolving	0	0
Revolving Converted to Term During the Period	0	259
Total	3,110	4,324
Commercial loans \| SBA non-real estate secured \| Greater than 10%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	0	0
Year two	0	83
Year three	81	357
Year four	353	1,856
Year five	1,725	340
Prior	691	415
Revolving	692	707
Revolving Converted to Term During the Period	0	0
Total	3,542	3,758
Commercial loans \| Total commercial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	78,092	155,831
Year two	141,817	444,000
Year three	424,977	266,221
Year four	243,017	280,317
Year five	262,286	97,412
Prior	176,638	120,099
Revolving	741,521	854,568
Revolving Converted to Term During the Period	1,699	11,140
Total	$ 2,070,047	$ 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	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	$ 758,874	$ 1,862,085
Year two	1,837,742	3,354,750
Year three	3,184,608	2,140,513
Year four	1,974,365	1,729,763
Year five	1,623,130	1,072,603
Prior	2,947,726	2,152,690
Revolving	789,248	912,643
Revolving Converted to Term During the Period	1,699	11,386
Total	13,117,392	13,236,433
Investor loans secured by real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	541,743	1,351,350
Year two	1,354,913	2,386,517
Year three	2,301,001	1,437,278
Year four	1,352,833	988,649
Year five	938,701	674,159
Prior	1,909,229	1,374,935
Revolving	13,796	12,877
Revolving Converted to Term During the Period	0	0
Total	8,412,216	8,225,765
Investor loans secured by real estate \| CRE non-owner-occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total	2,729,785	2,675,085
Investor loans secured by real estate \| CRE non-owner-occupied \| 55% and below
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	64,538	138,007
Year two	130,003	229,272
Year three	213,339	182,385
Year four	220,420	136,355
Year five	130,687	189,848
Prior	709,045	588,230
Revolving	10,779	11,114
Revolving Converted to Term During the Period	0	0
Total	1,478,811	1,475,211
Investor loans secured by real estate \| CRE non-owner-occupied \| >55-65%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	31,752	101,434
Year two	116,313	217,210
Year three	197,381	92,015
Year four	105,577	130,024
Year five	130,405	78,470
Prior	266,760	204,161
Revolving	548	559
Revolving Converted to Term During the Period	0	0
Total	848,736	823,873
Investor loans secured by real estate \| CRE non-owner-occupied \| >65-75%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	27,935	26,460
Year two	25,685	102,494
Year three	97,297	169,878
Year four	153,854	18,876
Year five	13,411	13,952
Prior	44,463	29,506
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	362,645	361,166
Investor loans secured by real estate \| CRE non-owner-occupied \| Greater than 75%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	0	0
Year two	0	2,750
Year three	20,763	4,787
Year four	12,676	2,762
Year five	4,374	0
Prior	1,780	4,536
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	39,593	14,835
Investor loans secured by real estate \| Multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Total	5,309,592	5,171,356
Investor loans secured by real estate \| Multifamily \| 55% and below
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	59,772	218,833
Year two	219,912	345,519
Year three	344,043	294,464
Year four	261,109	233,997
Year five	231,004	84,530
Prior	356,028	269,906
Revolving	1,426	0
Revolving Converted to Term During the Period	0	0
Total	1,473,294	1,447,249
Investor loans secured by real estate \| Multifamily \| >55-65%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	173,282	381,737
Year two	389,105	731,408
Year three	716,453	381,282
Year four	359,851	215,170
Year five	211,357	152,066
Prior	328,477	189,151
Revolving	0	420
Revolving Converted to Term During the Period	0	0
Total	2,178,525	2,051,234
Investor loans secured by real estate \| Multifamily \| >65-75%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	169,340	427,074
Year two	396,911	583,078
Year three	553,451	215,389
Year four	162,499	215,452
Year five	185,854	127,684
Prior	155,480	66,457
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	1,623,535	1,635,134
Investor loans secured by real estate \| Multifamily \| Greater than 75%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	2,628	0
Year two	0	19,469
Year three	14,667	10,618
Year four	10,535	1,879
Year five	1,869	0
Prior	4,539	5,773
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	34,238	37,739
Investor loans secured by real estate \| Construction and land
Financing Receivable, Allowance for Credit Loss [Line Items]
Total	316,458	321,993
Investor loans secured by real estate \| Construction and land \| 55% and below
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	12,496	57,309
Year two	76,486	105,308
Year three	106,181	36,068
Year four	27,368	18,625
Year five	12,264	20,531
Prior	26,377	6,672
Revolving	1,043	784
Revolving Converted to Term During the Period	0	0
Total	262,215	245,297
Investor loans secured by real estate \| Construction and land \| >55-65%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	0	0
Year two	0	36,113
Year three	19,603	23,770
Year four	18,590	0
Year five	0	0
Prior	0	0
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	38,193	59,883
Investor loans secured by real estate \| Construction and land \| >65-75%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	0	0
Year two	0	3,338
Year three	8,213	13,475
Year four	7,837	0
Year five	0	0
Prior	0	0
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	16,050	16,813
Investor loans secured by real estate \| Construction and land \| Greater than 75%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	0	0
Year two	0	0
Year three	0	0
Year four	0	0
Year five	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	56,381	57,331
Investor loans secured by real estate \| SBA secured by real estate \| 55% and below
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	0	0
Year two	0	2,066
Year three	102	649
Year four	645	673
Year five	669	317
Prior	1,088	778
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	2,504	4,483
Investor loans secured by real estate \| SBA secured by real estate \| >55-65%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	0	0
Year two	0	2,427
Year three	2,420	1,639
Year four	1,633	4,008
Year five	3,991	879
Prior	5,449	4,354
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	13,493	13,307
Investor loans secured by real estate \| SBA secured by real estate \| >65-75%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	0	0
Year two	0	3,897
Year three	3,888	3,882
Year four	4,641	3,482
Year five	3,477	4,519
Prior	6,619	1,884
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	18,625	17,664
Investor loans secured by real estate \| SBA secured by real estate \| Greater than 75%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	0	496
Year two	498	2,168
Year three	3,200	6,977
Year four	5,598	7,346
Year five	9,339	1,363
Prior	3,124	3,527
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	21,759	21,877
Business loans secured by real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	132,455	344,058
Year two	333,341	516,400
Year three	454,173	422,995
Year four	367,772	446,733
Year five	410,952	267,062
Prior	736,867	529,565
Revolving	9,196	14,518
Revolving Converted to Term During the Period	0	246
Total	2,444,756	2,541,577
Business loans secured by real estate \| SBA secured by real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total	73,967	79,595
Business loans secured by real estate \| SBA secured by real estate \| 55% and below
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	510	1,825
Year two	1,813	1,626
Year three	1,601	5,332
Year four	5,265	5,495
Year five	5,442	3,615
Prior	16,620	13,582
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	31,251	31,475
Business loans secured by real estate \| SBA secured by real estate \| >55-65%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	0	246
Year two	247	513
Year three	512	1,795
Year four	1,740	1,094
Year five	999	3,586
Prior	8,073	5,448
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	11,571	12,682
Business loans secured by real estate \| SBA secured by real estate \| >65-75%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	0	264
Year two	263	3,142
Year three	3,129	1,515
Year four	1,293	3,968
Year five	3,695	1,586
Prior	4,824	4,043
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	13,204	14,518
Business loans secured by real estate \| SBA secured by real estate \| Greater than 75%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	0	918
Year two	914	2,356
Year three	2,345	5,350
Year four	5,311	7,488
Year five	5,130	1,214
Prior	4,241	3,594
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	17,941	20,920
Business loans secured by real estate \| CRE owner-occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total	2,029,984	2,114,050
Business loans secured by real estate \| CRE owner-occupied \| 55% and below
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	41,757	96,803
Year two	100,507	160,605
Year three	148,303	157,868
Year four	122,790	179,791
Year five	173,168	131,795
Prior	433,778	328,188
Revolving	9,196	14,518
Revolving Converted to Term During the Period	0	246
Total	1,029,499	1,069,814
Business loans secured by real estate \| CRE owner-occupied \| >55-65%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	28,552	72,044
Year two	64,442	91,028
Year three	75,112	98,176
Year four	87,262	94,712
Year five	101,484	65,120
Prior	131,991	90,548
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	488,843	511,628
Business loans secured by real estate \| CRE owner-occupied \| >65-75%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	17,278	71,692
Year two	71,694	152,920
Year three	143,725	79,106
Year four	72,734	43,832
Year five	25,938	31,303
Prior	63,635	31,493
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	395,004	410,346
Business loans secured by real estate \| CRE owner-occupied \| Greater than 75%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	21,166	54,975
Year two	48,948	21,122
Year three	6,527	4,960
Year four	5,852	13,354
Year five	13,277	2,202
Prior	20,868	25,649
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	116,638	122,262
Business loans secured by real estate \| Franchise real estate secured
Financing Receivable, Allowance for Credit Loss [Line Items]
Total	340,805	347,932
Business loans secured by real estate \| Franchise real estate secured \| 55% and below
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	1,884	20,801
Year two	20,715	10,470
Year three	9,853	13,864
Year four	15,109	20,956
Year five	13,479	9,189
Prior	25,410	16,213
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	86,450	91,493
Business loans secured by real estate \| Franchise real estate secured \| >55-65%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	0	2,689
Year two	2,666	9,955
Year three	9,905	16,001
Year four	14,514	19,102
Year five	14,248	6,855
Prior	7,615	2,333
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	48,948	56,935
Business loans secured by real estate \| Franchise real estate secured \| >65-75%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	11,298	19,349
Year two	15,452	51,719
Year three	42,286	23,258
Year four	17,909	9,153
Year five	14,740	10,597
Prior	16,607	7,236
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	118,292	121,312
Business loans secured by real estate \| Franchise real estate secured \| Greater than 75%
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	10,010	2,452
Year two	5,680	10,944
Year three	10,875	15,770
Year four	17,993	47,788
Year five	39,352	0
Prior	3,205	1,238
Revolving	0	0
Revolving Converted to Term During the Period	0	0
Total	87,115	78,192
Retail loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	6,584	10,846
Year two	7,671	7,833
Year three	4,457	14,019
Year four	10,743	14,064
Year five	11,191	33,970
Prior	124,992	128,091
Revolving	24,735	30,680
Revolving Converted to Term During the Period	0	0
Total	190,373	239,503
Retail loans \| Single family residential
Financing Receivable, Allowance for Credit Loss [Line Items]
Total	184,049	232,574
Retail loans \| Single family residential \| Greater than 740
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	6,582	10,794
Year two	7,624	6,531
Year three	3,480	12,679
Year four	10,341	8,846
Year five	6,559	28,222
Prior	78,694	81,838
Revolving	15,850	19,588
Revolving Converted to Term During the Period	0	0
Total	129,130	168,498
Retail loans \| Single family residential \| >680 - 740
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	0	0
Year two	0	1,183
Year three	869	1,303
Year four	367	4,732
Year five	4,119	2,614
Prior	14,654	15,624
Revolving	5,915	6,685
Revolving Converted to Term During the Period	0	0
Total	25,924	32,141
Retail loans \| Single family residential \| >580 - 680
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	0	0
Year two	0	0
Year three	0	0
Year four	0	461
Year five	491	3,132
Prior	9,561	7,473
Revolving	863	864
Revolving Converted to Term During the Period	0	0
Total	10,915	11,930
Retail loans \| Single family residential \| Less than 580
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	0	0
Year two	0	0
Year three	0	0
Year four	0	0
Year five	0	0
Prior	18,046	19,970
Revolving	34	35
Revolving Converted to Term During the Period	0	0
Total	18,080	20,005
Retail loans \| Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Total	6,324	6,929
Retail loans \| Consumer \| Greater than 740
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	2	52
Year two	47	69
Year three	63	31
Year four	30	22
Year five	19	1
Prior	3,476	2,609
Revolving	531	2,198
Revolving Converted to Term During the Period	0	0
Total	4,168	4,982
Retail loans \| Consumer \| >680 - 740
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	0	0
Year two	0	35
Year three	32	6
Year four	5	3
Year five	3	0
Prior	459	469
Revolving	1,461	1,227
Revolving Converted to Term During the Period	0	0
Total	1,960	1,740
Retail loans \| Consumer \| >580 - 680
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	0	0
Year two	0	15
Year three	13	0
Year four	0	0
Year five	0	1
Prior	90	95
Revolving	57	56
Revolving Converted to Term During the Period	0	0
Total	160	167
Retail loans \| Consumer \| Less than 580
Financing Receivable, Allowance for Credit Loss [Line Items]
Year one	0	0
Year two	0	0
Year three	0	0
Year four	0	0
Year five	0	0
Prior	12	13
Revolving	24	27
Revolving Converted to Term During the Period	0	0
Total	$ 36	$ 40

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Dec. 31, 2020	Jun. 01, 2020	Dec. 31, 2019
Goodwill [Line Items]
Goodwill	$ 900,204	$ 808,322	$ 900,204	$ 898,569		$ 808,322
Purchase accounting adjustments	1,635	0
Net intangible assets	81,364	$ 79,349	81,364	85,507
Remainder of fiscal year	15,900		15,900
2022	14,000		14,000
2023	12,300		12,300
2024	11,100		11,100
2025	$ 10,000		10,000
Min
Goodwill [Line Items]
Weighted average useful life	6 years
Max
Goodwill [Line Items]
Weighted average useful life	11 years
Core Deposits
Goodwill [Line Items]
Net intangible assets	$ 78,400		78,400	82,500
Customer Relationships
Goodwill [Line Items]
Net intangible assets	2,900		2,900	$ 3,000
Opus Bank
Goodwill [Line Items]
Goodwill					$ 91,882
Purchase accounting adjustments	$ 1,600		$ 962

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets - Goodwill Roll Forward (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2021USD ($)	Mar. 31, 2020USD ($)
Goodwill [Roll Forward]
Balance, beginning of year	$ 898,569	$ 808,322
Purchase accounting adjustments	1,635	0
Balance, end of year	900,204	808,322
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
	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020
Gross Balance of CDI:
Balance, beginning of year	$ 145,212	$ 145,212	$ 125,945
Additions due to acquisitions	0	0	0
Balance, end of year	145,212	145,212	125,945
Accumulated amortization:
Balance, beginning of year	(59,705)	(55,200)	(42,633)
Amortization	4,143	4,505	3,963
Balance, end of year	(63,848)	(59,705)	(46,596)
Net intangible assets	$ 81,364	$ 85,507	$ 79,349

Subordinated Debentures - Narra

Subordinated Debentures - Narrative (Details) $ in Thousands	Mar. 31, 2021USD ($)note	Dec. 31, 2020USD ($)
Debt Instrument [Line Items]
Subordinated debentures	$ 501,611	$ 501,511
Subordinated notes
Debt Instrument [Line Items]
Number of notes/securities \| note	5
Subordinated debentures	$ 493,474	$ 493,410
Weighted interest rate	5.38%	5.38%
Subordinated debt
Debt Instrument [Line Items]
Number of notes/securities \| note	2
Subordinated debentures	$ 8,137	$ 8,101

Subordinated Debentures - Sched

Subordinated Debentures - Schedule of outstanding subordinated debentures (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Current Principal Balance	$ 505,403,000
Carrying Value	$ 501,611,000	$ 501,511,000
Subordinated notes
Debt Instrument [Line Items]
Fixed interest rate (as a percent)	7.125%
Current Principal Balance	$ 495,000,000
Carrying Value	$ 493,474,000	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 Principal Balance	$ 60,000,000
Carrying Value	$ 59,581,000	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 Principal Balance	$ 125,000,000
Carrying Value	$ 122,941,000	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	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 Principal Balance	$ 150,000,000
Carrying Value	$ 147,567,000	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	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 Principal Balance	$ 25,000,000
Carrying Value	$ 25,103,000	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 Principal Balance	$ 135,000,000
Carrying Value	$ 138,282,000	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	4.285%
Subordinated debt
Debt Instrument [Line Items]
Current Principal Balance	$ 10,403,000
Carrying Value	8,137,000	8,101,000
Subordinated debt \| Heritage Oaks Bancorp
Debt Instrument [Line Items]
Current Principal Balance	$ 5,248,000
Current Interest Rate	1.96%
Carrying Value	$ 4,138,000	4,121,000
Subordinated debt \| Heritage Oaks Bancorp \| LIBOR
Debt Instrument [Line Items]
Variable rate	1.72%
Subordinated debt \| Santa Lucia Bancorp (CA) Capital Trust
Debt Instrument [Line Items]
Current Principal Balance	$ 5,155,000
Current Interest Rate	1.72%
Carrying Value	$ 3,999,000	$ 3,980,000
Subordinated debt \| Santa Lucia Bancorp (CA) Capital Trust \| LIBOR
Debt Instrument [Line Items]
Variable rate	1.48%

Earnings per Share (Details)

Earnings per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020
Basic
Net income	$ 68,668	$ 67,136	$ 25,740
Less: Dividends and undistributed earnings allocated to participating securities	(665)	(629)	(232)
Net income allocated to common stockholders	$ 68,003	$ 66,507	$ 25,508
Weighted average common shares outstanding (in shares)	93,529,147	93,568,994	59,007,191
Basic earnings per common share (in dollars per share)	$ 0.73	$ 0.71	$ 0.43
Diluted
Net income allocated to common stockholders	$ 68,003	$ 66,507	$ 25,508
Weighted average common shares outstanding (in shares)	93,529,147	93,568,994	59,007,191
Diluted effect of share-based compensation (in shares)	564,497	400,194	182,526
Weighted average diluted common shares (in shares)	94,093,644	93,969,188	59,189,717
Diluted earnings per common share (in dollars per share)	$ 0.72	$ 0.71	$ 0.43

Fair Value of Financial Instr_3

Fair Value of Financial Instruments - Hierarchy Table on Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financial assets
Investment securities available-for-sale, at fair value	$ 3,857,337	$ 3,931,115
U.S. Treasury
Financial assets
Investment securities available-for-sale, at fair value	32,063	32,533
Agency
Financial assets
Investment securities available-for-sale, at fair value	663,159	690,386
Corporate
Financial assets
Investment securities available-for-sale, at fair value	357,834	415,308
Municipal bonds
Financial assets
Investment securities available-for-sale, at fair value	1,422,062	1,446,019
Collateralized mortgage obligations
Financial assets
Investment securities available-for-sale, at fair value	508,971	513,366
Mortgage-backed securities
Financial assets
Investment securities available-for-sale, at fair value	873,248	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	3,857,337	3,931,115
Derivative assets	5,326	12,053
Financial liabilities
Derivative liabilities	5,332	12,066
Level 3
Financial assets
Investment securities available-for-sale, at fair value	0	0
Derivative assets	1,911	1,914
Financial liabilities
Derivative liabilities	0	0
Recurring
Financial assets
Investment securities available-for-sale, at fair value	3,857,337	3,931,115
Derivative assets	7,237	13,967
Financial liabilities
Derivative liabilities	5,332	12,066
Recurring \| Interest rate swaps contracts
Financial assets
Derivative assets	5,326	12,053
Recurring \| Equity warrants
Financial assets
Derivative assets	1,911	1,914
Recurring \| U.S. Treasury
Financial assets
Investment securities available-for-sale, at fair value	32,063	32,533
Recurring \| Agency
Financial assets
Investment securities available-for-sale, at fair value	663,159	690,386
Recurring \| Corporate
Financial assets
Investment securities available-for-sale, at fair value	357,834	415,308
Recurring \| Municipal bonds
Financial assets
Investment securities available-for-sale, at fair value	1,422,062	1,446,019
Recurring \| Collateralized mortgage obligations
Financial assets
Investment securities available-for-sale, at fair value	508,971	513,366
Recurring \| Mortgage-backed securities
Financial assets
Investment securities available-for-sale, at fair value	873,248	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	3,857,337	3,931,115
Derivative assets	5,326	12,053
Financial liabilities
Derivative liabilities	5,332	12,066
Recurring \| Level 2 \| Interest rate swaps contracts
Financial assets
Derivative assets	5,326	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	32,063	32,533
Recurring \| Level 2 \| Agency
Financial assets
Investment securities available-for-sale, at fair value	663,159	690,386
Recurring \| Level 2 \| Corporate
Financial assets
Investment securities available-for-sale, at fair value	357,834	415,308
Recurring \| Level 2 \| Municipal bonds
Financial assets
Investment securities available-for-sale, at fair value	1,422,062	1,446,019
Recurring \| Level 2 \| Collateralized mortgage obligations
Financial assets
Investment securities available-for-sale, at fair value	508,971	513,366
Recurring \| Level 2 \| Mortgage-backed securities
Financial assets
Investment securities available-for-sale, at fair value	873,248	833,503
Recurring \| Level 3
Financial assets
Investment securities available-for-sale, at fair value	0	0
Derivative assets	1,911	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	1,911	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 $ in Thousands	3 Months Ended
	Mar. 31, 2021USD ($)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	$ 1,914
Change in fair value	(3)
Ending balance	$ 1,911

Fair Value of Financial Instr_5

Fair Value of Financial Instruments - Schedule of Quantitative Information for Level 3 Fair Value Measurements (Details) $ in Thousands	Mar. 31, 2021USD ($)	Dec. 31, 2020USD ($)
Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans receivable, fair value	$ 13,276,121	$ 13,351,092
Recurring \| Level 3 \| Black-Scholes option pricing model
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity warrants	$ 1,911	$ 1,914
Recurring \| Level 3 \| Black-Scholes option pricing model \| Volatility \| Min
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 \| Max
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	0.3118	0.3119
Recurring \| Level 3 \| Black-Scholes option pricing model \| Risk free interest rate \| Min
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity warrants, input	0.0016	0.0013
Recurring \| Level 3 \| Black-Scholes option pricing model \| Risk free interest rate \| Max
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity warrants, input	0.0064	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	0.0027	0.0018
Recurring \| Level 3 \| Black-Scholes option pricing model \| Marketability Discount \| Min
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity warrants, input	0.0600	0.0600
Recurring \| Level 3 \| Black-Scholes option pricing model \| Marketability Discount \| Max
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	0.1352	0.1351
Nonrecurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans receivable, fair value	$ 606	$ 4,077
Nonrecurring \| Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans receivable, fair value	606	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		$ 198
Nonrecurring \| Level 3 \| Fair value of collateral \| Investor loans secured by real estate \| CRE non-owner-occupied \| Collateral discount and cost to sell \| Min
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans receivable, input		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 \| Max
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans receivable, input		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		0.1000
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	$ 440	$ 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 \| Min
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 \| Max
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 \| Min
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 \| Max
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	$ 166	$ 2,040
Nonrecurring \| Level 3 \| Fair value of collateral \| Commercial loans \| Commercial and industrial \| Collateral discount and cost to sell \| Min
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans receivable, input	0.7500	0.0700
Nonrecurring \| Level 3 \| Fair value of collateral \| Commercial loans \| Commercial and industrial \| Collateral discount and cost to sell \| Max
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans receivable, input	1	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	0.7500	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 \| Min
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 \| Max
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

Fair Value of Financial Instr_6

Fair Value of Financial Instruments - Narrative (Details) $ in Thousands	Mar. 31, 2021USD ($)	Dec. 31, 2020USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Specific reserve recorded on loan	$ 688	$ 126
Discount Rate \| Min
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other real estate owned, input	0.07
Discount Rate \| Max
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	Mar. 31, 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	13,276,121	13,351,092
Nonrecurring
Fair Value Disclosures
Collateral dependent loans/Impaired loans	606	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	$ 606	$ 4,077

Fair Value of Financial Instr_8

Fair Value of Financial Instruments - Fair Value Estimates (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Assets
Investments held-to-maturity	$ 23,004	$ 25,013
Investment securities available-for-sale	3,857,337	3,931,115
Accrued interest receivable	65,098	74,574
Level 1
Assets
Cash and cash equivalents	1,554,668	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	65,098	74,574
Liabilities
Deposit accounts	15,369,192	14,587,335
FHLB advances	0	0
Subordinated debentures	0	0
Derivative liabilities	0	0
Accrued interest payable	7,097	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	23,004	25,013
Investment securities available-for-sale	3,857,337	3,931,115
Loans held for sale	7,702	645
Loans held for investment, net	0	0
Derivative assets	5,326	12,053
Accrued interest receivable	0	0
Liabilities
Deposit accounts	1,373,363	1,631,047
FHLB advances	9,998	31,564
Subordinated debentures	542,721	544,436
Derivative liabilities	5,332	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	13,276,121	13,351,092
Derivative assets	1,911	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	1,554,668	880,766
Investments held-to-maturity	21,931	23,732
Investment securities available-for-sale	3,857,337	3,931,115
Loans held for sale	7,311	601
Loans held for investment, net	13,117,392	13,236,433
Derivative assets	7,237	13,967
Accrued interest receivable	65,098	74,574
Liabilities
Deposit accounts	16,740,007	16,214,177
FHLB advances	10,000	31,000
Subordinated debentures	501,611	501,511
Derivative liabilities	5,332	12,066
Accrued interest payable	7,097	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	1,554,668	880,766
Investments held-to-maturity	23,004	25,013
Investment securities available-for-sale	3,857,337	3,931,115
Loans held for sale	7,702	645
Loans held for investment, net	13,276,121	13,351,092
Derivative assets	7,237	13,967
Accrued interest receivable	65,098	74,574
Liabilities
Deposit accounts	16,742,555	16,218,382
FHLB advances	9,998	31,564
Subordinated debentures	542,721	544,436
Derivative liabilities	5,332	12,066
Accrued interest payable	7,097	6,569
Estimated Fair Value \| Interest-bearing time deposits with financial institutions
Assets
Cash and cash equivalents	$ 2,708	$ 2,845

Derivative Instruments (Details

Derivative Instruments (Details) - USD ($) $ in Thousands	3 Months Ended
Derivative Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Derivative [Line Items]
Derivative financial instruments included in gain (loss)	$ 4	$ 198
Equity warrants \| Other Income
Derivative [Line Items]
Derivative financial instruments included in gain (loss)	(3)	0
Interest rate products \| Other Income
Derivative [Line Items]
Derivative financial instruments included in gain (loss)	0	198
Interest Rate Contract \| Other Income
Derivative [Line Items]
Derivative financial instruments included in gain (loss)	7	$ 0
Not Designated as Hedging Instruments
Derivative [Line Items]
Derivative assets, notional	143,577		$ 145,181
Derivative assets	7,237		13,967
Derivative liabilities, notional	143,577		145,181
Derivative liabilities	5,332		12,066
Not Designated as Hedging Instruments \| Over the Counter
Derivative [Line Items]
Derivative assets, notional	143,600		145,200
Derivative assets	5,300		12,100
Not Designated as Hedging Instruments \| Interest rate swaps contracts
Derivative [Line Items]
Derivative assets, notional	143,577		145,181
Derivative assets	5,326		12,053
Derivative liabilities, notional	143,577		145,181
Derivative liabilities	5,332		12,066
Not Designated as Hedging Instruments \| Equity warrants
Derivative [Line Items]
Derivative assets, notional	0		0
Derivative assets	1,911		1,914
Derivative liabilities, notional	0		0
Derivative liabilities	$ 0		$ 0

Balance Sheet Offsetting (Detai

Balance Sheet Offsetting (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Derivative assets:
Gross Amounts Recognized	$ 5,326	$ 12,053
Gross Amounts Offset in the Consolidated Statements of Financial Condition	0	0
Net Amounts Presented in the Consolidated Statements of Financial Condition	5,326	12,053
Financial Instruments	0	0
Cash Collateral	0	0
Net Amount	5,326	12,053
Derivative liabilities:
Gross Amounts Recognized	5,332	12,066
Gross Amounts Offset in the Consolidated Statements of Financial Condition	0	0
Net Amounts Presented in the Consolidated Statements of Financial Condition	5,332	12,066
Financial Instruments	0	(6,140)
Cash Collateral	(5,332)	(5,926)
Net Amount	0	0
Interest rate swaps contracts
Derivative assets:
Gross Amounts Recognized	5,326	12,053
Gross Amounts Offset in the Consolidated Statements of Financial Condition	0	0
Net Amounts Presented in the Consolidated Statements of Financial Condition	5,326	12,053
Financial Instruments	0	0
Cash Collateral	0	0
Net Amount	5,326	12,053
Derivative liabilities:
Gross Amounts Recognized	5,332	12,066
Gross Amounts Offset in the Consolidated Statements of Financial Condition	0	0
Net Amounts Presented in the Consolidated Statements of Financial Condition	5,332	12,066
Financial Instruments	0	(6,140)
Cash Collateral	(5,332)	(5,926)
Net Amount	$ 0	$ 0

Leases - Components of Lease Ex

Leases - Components of Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020
Leases [Abstract]
Operating lease	$ 5,012	$ 5,375	$ 3,164
Short-term lease	507	607	527
Total lease expense	$ 5,519	$ 5,982	$ 3,691

Leases - Narrative (Details)

Leases - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
Leases - Narrative (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Jun. 01, 2020
Lessee, Lease, Description [Line Items]
Operating lease liability, statement of financial position [Extensible List]	Accrued expenses and other liabilities	Accrued expenses and other liabilities
Operating lease right-of-use asset, statement of financial position [Extensible List]	Other assets	Other assets
Operating lease liabilities	$ 79,441	$ 85,556
Operating lease right of use assets	70,417	76,090
Rental income	$ 175	$ 178	$ 25
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 - Schedule of Supplement

Leases - Schedule of Supplemental Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Leases [Abstract]
Operating lease right of use assets	$ 70,417		$ 76,090
Operating lease liabilities	79,441		$ 85,556
Operating cash flows from operating leases	$ 2,000	$ 2,257

Leases - Schedule of Minimum Co

Leases - Schedule of Minimum Contractual Lease Payments and Other Information (Details) $ in Thousands	Mar. 31, 2021USD ($)
Operating leases
2021	$ 14,778
2022	18,682
2023	18,051
2024	16,076
2025	11,014
Thereafter	13,039
Total	91,640
Short-term leases
2021	180
2022	7
2023	0
2024	0
2025	0
Thereafter	0
Total	187
Total contractual base rents
2021	14,958
2022	18,689
2023	18,051
2024	16,076
2025	11,014
Thereafter	13,039
Total	91,827
Total liability to make lease payments	79,441
Difference in undiscounted and discounted future lease payments	$ 12,386
Weighted average discount rate	5.70%
Weighted average remaining lease term (years)	5 years 3 months 18 days

Revenue Recognition - Summary o

Revenue Recognition - Summary of Company's Revenue Streams (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020
Noninterest income:
Loan servicing income	$ 458	$ 633	$ 480
Earnings on bank-owned life insurance	2,233	2,240	1,336
Net gain from sales of loans	361	328	771
Net gain from sales of investment securities	4,046	5,002	7,760
Other income	4,602	3,197	1,754
Total noninterest income	23,740	23,194	14,475
Service charges on deposit accounts
Noninterest income:
Noninterest income	2,032	2,005	1,715
Other service fee income
Noninterest income:
Noninterest income	473	459	311
Debit card interchange income
Noninterest income:
Noninterest income	787	777	348
Trust custodial account fees
Noninterest income:
Noninterest income	7,222	7,296	0
Escrow and exchange fees
Noninterest income:
Noninterest income	1,526	1,257	0
Within Scope
Noninterest income:
Other income	282	199	217
Total noninterest income	12,322	11,993	2,591
Within Scope \| Service charges on deposit accounts
Noninterest income:
Noninterest income	2,032	2,005	1,715
Within Scope \| Other service fee income
Noninterest income:
Noninterest income	473	459	311
Within Scope \| Debit card interchange income
Noninterest income:
Noninterest income	787	777	348
Within Scope \| Trust custodial account fees
Noninterest income:
Noninterest income	7,222	7,296	0
Within Scope \| Escrow and exchange fees
Noninterest income:
Noninterest income	1,526	1,257	0
Out of Scope
Noninterest income:
Loan servicing income	458	633	480
Earnings on bank-owned life insurance	2,233	2,240	1,336
Net gain from sales of loans	361	328	771
Net gain from sales of investment securities	4,046	5,002	7,760
Other income	4,320	2,998	1,537
Total noninterest income	$ 11,418	$ 11,201	$ 11,884

Revenue Recognition - Narrative

Revenue Recognition - Narrative (Details) - Trust custodial account fees $ in Millions	Mar. 31, 2021USD ($)
Disaggregation of Revenue [Line Items]
Accrued fees receivable	$ 5.9
Deferred revenue	$ 2.4

Variable Interest Entities - Su

Variable Interest Entities - Summary of Variable Interest Entities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Variable Interest Entity [Line Items]
Investment securities available-for-sale	$ 3,857,337	$ 3,931,115
Accrued expenses and other liabilities	218,582	243,207
Other assets	240,730	292,861
Total assets	20,173,298	19,736,544
Liabilities	17,470,200	16,989,895
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Maximum loss	221,401	223,509
Total assets	185,311	190,686
Liabilities	15,259	18,526
Variable Interest Entity, Not Primary Beneficiary \| Multifamily Loan Securitization
Variable Interest Entity [Line Items]
Investment securities available-for-sale	98,863	100,927
Accrued expenses and other liabilities	448	448
Variable Interest Entity, Not Primary Beneficiary \| Multifamily Loan Securitization, Asset
Variable Interest Entity [Line Items]
Maximum loss	98,863	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 expenses and other liabilities	14,811	18,078
Other assets	86,448	89,759
Variable Interest Entity, Not Primary Beneficiary \| Affordable Housing Partnership, Asset
Variable Interest Entity [Line Items]
Maximum loss	71,637	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	Mar. 31, 2021	Dec. 31, 2020
Variable Interest Entity [Line Items]
Accrued expenses and other liabilities	$ 218,582	$ 243,207
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Maximum loss	$ 221,401	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 expenses and other liabilities	$ 448	$ 448

Subsequent Events (Details)

Subsequent Events (Details) - USD ($)	Apr. 23, 2021	Apr. 15, 2021	Mar. 31, 2021	Mar. 31, 2020
Subsequent Event [Line Items]
Cash dividends declared (in dollars per share)			$ 0.30	$ 0.25
Aggregate principal amount of debt issued			$ 505,403,000
Loss on early debt extinguishment			503,000	$ 0
Subordinated notes
Subsequent Event [Line Items]
Aggregate principal amount of debt issued			$ 495,000,000
Fixed interest rate (as a percent)			7.125%
Subsequent Event
Subsequent Event [Line Items]
Cash dividends declared (in dollars per share)	$ 0.33
Subsequent Event \| Subordinated notes
Subsequent Event [Line Items]
Aggregate principal amount of debt issued		$ 25,000,000
Redemption price (as a percent)		103.00%
Redemption amount		$ 25,800,000
Loss on early debt extinguishment		647,000
Purchase accounting adjustments		$ 103,000

Uncategorized Items - ppbi-2021

Label	Element	Value
Accounting Standards Update [Extensible List]	us-gaap_AccountingStandardsUpdateExtensibleList	us-gaap:AccountingStandardsUpdate201613Member