Pacific Premier Bancorp (PPBI) 10-K 28 Feb 20 2019 FY Annual report Financial data

Cover Page

Cover Page - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Feb. 21, 2020	Jun. 28, 2019
Cover page.
Document Type	10-K
Document Annual Report	true
Document Transition Report	false
Document Period End Date	Dec. 31, 2019
Entity File Number	0-22193
Entity Registrant Name	PACIFIC PREMIER BANCORP INC
Entity Central Index Key	0001028918
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Amendment Flag	false
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
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	PPBI
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 1,820
Entity Common Stock, Shares Outstanding		59,576,999
Documents Incorporated by Reference	The information required by Items 10, 11, 12, 13 and 14 of Part III of this Annual Report on Form 10-K will be found in the Company’s definitive proxy statement for its 2020 Annual Meeting of Stockholders, to be filed pursuant to Regulation 14A under the Securities Exchange Act of 1934, as amended, and such information is incorporated herein by this reference.

CONSOLIDATED STATEMENTS OF FINA

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
ASSETS
Cash and due from banks	$ 135,847	$ 125,036
Interest-bearing deposits with financial institutions	191,003	78,370
Cash and cash equivalents	326,850	203,406
Interest-bearing time deposits with financial institutions	2,708	6,143
Investments held-to-maturity, at amortized cost (fair value of $38,760 and $44,672 as of December 31, 2019 and December 31, 2018, respectively)	37,838	45,210
Investment securities available-for-sale, at fair value	1,368,384	1,103,222
FHLB, FRB and other stock, at cost	93,061	94,918
Loans held for sale, at lower of cost or fair value	1,672	5,719
Loans held for investment	8,722,311	8,836,818
Allowance for loan losses	(35,698)	(36,072)
Loans held for investment, net	8,686,613	8,800,746
Accrued interest receivable	39,442	37,837
Other real estate owned	441	147
Premises and equipment	59,001	64,691
Deferred income taxes, net	0	15,627
Bank owned life insurance	113,376	110,871
Intangible assets	83,312	100,556
Goodwill	808,322	808,726
Other assets	154,992	89,568
Total assets	11,776,012	11,487,387
Deposit accounts:
Noninterest-bearing checking	3,857,660	3,495,737
Interest-bearing:
Checking	586,019	526,088
Money market/savings	3,406,988	3,225,849
Retail certificates of deposit	973,465	1,009,066
Wholesale/brokered certificates of deposit	74,377	401,611
Total interest-bearing	5,040,849	5,162,614
Total deposits	8,898,509	8,658,351
FHLB advances and other borrowings	517,026	667,681
Subordinated debentures	215,145	110,313
Deferred income taxes, net	1,371	0
Accrued expenses and other liabilities	131,367	81,345
Total liabilities	9,763,418	9,517,690
STOCKHOLDERS’ EQUITY
Preferred stock, $.01 par value; 1,000,000 shares authorized; no shares issued and outstanding	0	0
Common stock, $.01 par value; 150,000,000 shares authorized at December 31, 2019 and 2018; 59,506,057 shares and 62,480,755 shares issued and outstanding, respectively	586	617
Additional paid-in capital	1,594,434	1,674,274
Retained earnings	396,051	300,407
Accumulated other comprehensive income (loss)	21,523	(5,601)
Total stockholders’ equity	2,012,594	1,969,697
Total liabilities and stockholders’ equity	$ 11,776,012	$ 11,487,387

CONSOLIDATED STATEMENTS OF FI_2

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Estimated Fair Value	$ 38,760	$ 44,672
Preferred stock, shares authorized (in shares)	1,000,000	1,000,000
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
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)	59,506,057	62,480,755
Common stock, shares outstanding (in shares)	59,506,057	62,480,755

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
INTEREST INCOME
Loans	$ 485,663	$ 415,410	$ 251,027
Investment securities and other interest-earning assets	40,444	33,013	18,978
Total interest income	526,107	448,423	270,005
INTEREST EXPENSE
Deposits	58,297	37,653	13,371
FHLB advances and other borrowings	9,829	11,343	4,411
Subordinated debentures	10,680	6,716	4,721
Total interest expense	78,806	55,712	22,503
Net interest income before provision for credit losses	447,301	392,711	247,502
Provision for credit losses	5,719	8,253	8,432
Net interest income after provision for credit losses	441,582	384,458	239,070
NONINTEREST INCOME
Loan servicing fees	1,840	1,445	787
Earnings on bank-owned life insurance	3,486	3,427	2,279
Net gain from sales of loans	6,642	10,759	12,468
Net gain from sales of investment securities	8,571	1,399	2,737
Other income	4,486	3,641	5,680
Total noninterest income	35,236	31,027	31,114
NONINTEREST EXPENSE
Compensation and benefits	139,187	129,886	84,138
Premises and occupancy	30,758	24,544	14,742
Data processing	12,301	13,412	8,206
Other real estate owned operations, net	160	4	72
FDIC insurance premiums	764	3,002	2,151
Legal, audit and professional expense	12,869	10,040	6,101
Marketing expense	6,402	6,151	4,436
Office, telecommunications and postage expense	4,826	5,312	3,117
Loan expense	4,079	3,370	3,299
Deposit expense	15,266	9,916	6,240
Merger-related expense	656	18,454	21,002
CDI amortization	17,245	13,594	6,144
Other expense	14,552	12,220	8,310
Total noninterest expense	259,065	249,905	167,958
INCOME BEFORE INCOME TAXES	217,753	165,580	102,226
Income tax	58,035	42,240	42,126
NET INCOME	$ 159,718	$ 123,340	$ 60,100
EARNINGS PER SHARE
Basic (in dollars per share)	$ 2.62	$ 2.29	$ 1.59
Diluted (in dollars per share)	$ 2.60	$ 2.26	$ 1.56
WEIGHTED AVERAGE SHARES OUTSTANDING
Basic (in shares)	60,339,714	53,963,047	37,705,556
Diluted (in shares)	60,692,281	54,613,057	38,511,261
Service charges on deposit accounts
NONINTEREST INCOME
Noninterest income	$ 5,769	$ 5,128	$ 3,273
Other service fee income
NONINTEREST INCOME
Noninterest income	1,438	902	1,847
Debit card interchange fee income
NONINTEREST INCOME
Noninterest income	$ 3,004	$ 4,326	$ 2,043

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Net Income		$ 159,718	$ 123,340	$ 60,100
Other comprehensive income, net of tax:
Unrealized holding gains/(losses) on securities arising during the period, net of income tax (benefits)	[1]	33,226	(5,019)	4,937
Reclassification adjustment for net gain on sale of securities included in net income, net of income taxes	[2]	(6,102)	(1,079)	(1,801)
Other comprehensive (loss) income, net of tax		27,124	(6,098)	3,136
Comprehensive income, net of tax		$ 186,842	$ 117,242	$ 63,236
[1]	Income tax (benefit) on unrealized holding gains (losses) on securities was $13.4 million for 2019, ($2.2 million) for 2018 and $3.1 million for 2017.
[2]	Income tax on reclassification adjustment for net gain on sale of securities included in net income was $2.5 million for 2019, $320,000 for 2018 and $936,000 for 2017.

CONSOLIDATED STATEMENTS OF CO_2

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Unrealized holding (losses) gains on securities arising during the period, net of income tax (benefit)	$ 13,400	$ (2,200)	$ 3,100
Reclassification adjustment for net gain on sale of securities included in net income, net of income tax	$ 2,500	$ 320	$ 936

CONSOLIDATED STATEMENTS OF STOC

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Balance at Dec. 31, 2016	$ 459,740	$ 274	$ 345,138	$ 117,049	$ (2,721)
Balance (in shares) at Dec. 31, 2016		27,798,283
Increase (Decrease) in Stockholders' Equity
Net Income	60,100			60,100
Other comprehensive income (loss)	3,136				3,136
Share-based compensation expense	5,809		5,809
Issuance of restricted stock, net (in shares)		166,397
Issuance of common stock	709,377	$ 181	709,196
Issuance of common stock (in shares)		17,954,274
Goodwill adjustment	500		500
Restricted stock surrendered and canceled	(1,258)		(1,258)
Restricted stock surrendered and canceled (in shares)		(21,537)
Exercise of stock options, net	4,592	$ 3	4,589
Exercise of stock options (in shares)		347,633
Balance at Dec. 31, 2017	1,241,996	$ 458	1,063,974	177,149	415
Balance (in shares) at Dec. 31, 2017		46,245,050
Increase (Decrease) in Stockholders' Equity
Net Income	123,340			123,340
Other comprehensive income (loss)	(6,098)				(6,098)
Share-based compensation expense	9,033		9,033
Issuance of restricted stock, net	0
Issuance of restricted stock, net (in shares)		270,571
Issuance of common stock	601,171	$ 158	601,013
Issuance of common stock (in shares)		15,758,039
Restricted stock surrendered and canceled	(1,669)		(1,669)
Restricted stock surrendered and canceled (in shares)		(33,148)
Exercise of stock options, net	1,924	$ 1	1,923
Exercise of stock options (in shares)		240,243
Reclassification of certain tax effects of the Tax Cuts and Jobs Act	0			(82)	82
Balance at Dec. 31, 2018	$ 1,969,697	$ 617	1,674,274	300,407	(5,601)
Balance (in shares) at Dec. 31, 2018	62,480,755	62,480,755
Increase (Decrease) in Stockholders' Equity
Net Income	$ 159,718			159,718
Other comprehensive income (loss)	27,124				27,124
Share-based compensation expense	10,528		10,528
Issuance of restricted stock, net	0
Issuance of restricted stock, net (in shares)		316,754
Restricted stock surrendered and canceled	(3,285)		(3,285)
Restricted stock surrendered and canceled (in shares)		(139,569)
Repurchase and retirement of common stock	(100,000)	$ (33)	(89,887)	(10,080)
Repurchase of common stock (in shares)		(3,364,761)
Cash dividends declared ($0.88 per share)	(53,867)			(53,867)
Dividend equivalents declared ($0.88 per restricted stock units)	0		127	(127)
Exercise of stock options, net	2,679	$ 2	2,677
Exercise of stock options (in shares)		212,878
Balance at Dec. 31, 2019	$ 2,012,594	$ 586	$ 1,594,434	$ 396,051	$ 21,523
Balance (in shares) at Dec. 31, 2019	59,506,057	59,506,057

CONSOLIDATED STATEMENTS OF ST_2

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical)	12 Months Ended
	Dec. 31, 2019$ / shares
Statement of Stockholders' Equity [Abstract]
Cash dividends declared (in dollars per share)	$ 0.88
Dividend equivalents declared (in dollars per share)	$ 0.88

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities:
Net income	$ 159,718	$ 123,340	$ 60,100
Adjustments to net income:
Depreciation and amortization expense	9,815	7,773	4,888
Provision for credit losses	5,719	8,253	8,432
Share-based compensation expense	10,528	9,033	5,809
(Gain) loss on sale and disposal of premises and equipment	(42)	108	234
Gain on sale of or write down of other real estate owned	(55)	(355)	(46)
Net amortization on securities	4,745	6,900	7,601
Net accretion of discounts/premiums for acquired loans and deferred loan fees/costs	(27,378)	(21,401)	(16,172)
Gain on sale of investment securities available-for-sale	(8,571)	(1,399)	(2,737)
Originations of loans held for sale	(98,232)	(147,740)	(135,348)
Proceeds from the sales of and principal payments from loans held for sale	111,952	184,220	132,320
Gain on sale of loans	(6,642)	(10,759)	(12,468)
Deferred income tax expense	7,496	9,275	16,420
Change in accrued expenses and other liabilities, net	(6,265)	14,157	5,193
Income from bank owned life insurance, net	(2,689)	(2,774)	(1,842)
Amortization of core deposit intangible	17,245	13,594	6,144
Change in accrued interest receivable and other assets, net	5,346	4,266	(9,157)
Net cash provided by (used) in operating activities	182,690	196,491	69,371
Cash flows from investing activities:
Net increase in interest-bearing time deposits with financial institutions	3,435	490	(2,689)
Proceeds from sale of other real estate owned	405	1,058	507
Loan originations and payments, net	266,632	(340,023)	(601,617)
Proceeds from loans held for sale previously classified as portfolio loans	86,313	125,485	103,049
Purchase of loans held for investment	(222,701)	(61,562)	(13,582)
Purchase of held-to-maturity securities	0	(29,002)	(10,914)
Proceeds from prepayments and maturities of held-to-maturity securities	7,318	1,785	1,166
Purchase of securities available-for-sale	(889,516)	(462,534)	(306,527)
Proceeds from prepayments and maturities of securities available-for-sale	114,520	131,268	74,891
Proceeds from sale or maturity of securities available-for-sale	551,784	407,004	268,596
Proceeds from the sale of premises and equipment	14,751	0	18
Proceeds from bank owned insurance death benefit	405	1,284	198
Purchases of premises and equipment	(18,834)	(10,295)	(4,183)
Change in FHLB, FRB, and other stock, at cost	2,306	(27,086)	(12,838)
Funding of CRA investments	(15,069)	(21,936)	(6,189)
Cash acquired in acquisitions, net	0	146,571	225,945
Net cash used in investing activities	(98,251)	(137,493)	(284,169)
Cash flows from financing activities:
Net increase in deposit accounts	240,158	65,553	187,901
Net change in short-term borrowings	(115,075)	(108,064)	61,120
Proceeds from FHLB borrowings	0	0	12,012
Repayment of FHLB borrowings	(35,500)	(10,500)	(9,262)
Redemption of junior subordinated debt securities	(18,558)	0	0
Proceeds from issuance of subordinated debt, net	122,453	0	0
Cash dividends paid	(53,867)	0	0
Repurchase and retirement of common stock	(100,000)	0	0
Proceeds from exercise of stock options	2,679	1,924	4,592
Restricted stock surrendered and canceled	(3,285)	(1,669)	(1,258)
Net cash provided by (used in) financing activities	39,005	(52,756)	255,105
Net change in cash and cash equivalents	123,444	6,242	40,307
Cash and cash equivalents, beginning of year	203,406	197,164	156,857
Cash and cash equivalents, end of year	326,850	203,406	197,164
Supplemental cash flow disclosures:
Interest paid	79,386	53,960	21,777
Income taxes paid	52,093	32,296	18,846
Noncash investing activities:
Loans held for sale transfer to loans held for investment	89,259	133,499	99,066
Transfers from loans to other real estate owned	644	15	121
Recognition of operating lease right-of-use assets	(52,701)	0	0
Recognition of operating lease liabilities	52,701	0	0
Assets acquired (liabilities assumed) in acquisitions (See Note 27):
Investment securities	0	392,858	442,923
Loans	0	2,352,717	2,427,589
Core deposit intangible	0	71,943	39,703
Deferred income tax	0	4,383	14,959
Goodwill	0	313,043	391,070
Fixed assets	0	9,122	42,097
Other assets	0	97,246	74,379
Deposits	0	(2,506,929)	(2,752,501)
Other borrowings	0	(254,923)	(180,186)
Other liabilities	0	(24,859)	(16,395)
Common Stock and additional paid-in capital	$ 0	$ (601,172)	$ (716,421)

Description of Business and Sum

Description of Business and Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2019
Accounting Policies [Abstract]
Description of Business and Summary of Significant Accounting Policies	Description of Business and Summary of Significant Accounting Policies Description of Business. Pacific Premier Bancorp, Inc., a Delaware corporation organized in 1997 (the “Corporation”), is a California-based bank holding company that owns 100% of the capital stock of Pacific Premier Bank, a California-chartered commercial bank (the “Bank,” and together with the Corporation and its consolidated subsidiaries, the “Company”), the Corporation’s principal operating subsidiary. The Bank was incorporated and commenced operations in 1983. The principal business of the Company is attracting deposits from the general public and investing those deposits, together with funds generated from operations and borrowings, primarily in business loans and real estate property loans. At December 31, 2019 , the Company had 41 depository branches located in the counties of Orange, Los Angeles, Riverside, San Bernardino, San Diego, San Luis Obispo and Santa Barbara, California, as well as Pima and Maricopa Counties, Arizona, Clark County, Nevada and Clark County, Washington. The Company is subject to competition from other financial institutions. The Company is subject to the regulations of certain governmental agencies and undergoes periodic examinations by those regulatory authorities. Principles of Consolidation. The consolidated financial statements include the accounts of Corporation and its wholly-owned subsidiary the Bank. 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 under the equity method whereby the subsidiary’s net earnings are recognized in the Company’s Statement of Income and the investment in these entities is included in Other Assets on the Company’s Consolidated Statements of Financial Condition. The Company is organized and operates as a single reporting segment, principally engaged in the commercial banking business. All significant intercompany accounts and transactions have been eliminated in consolidation. Basis of Financial Statement Presentation. The accompanying consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States (‘’U.S. GAAP’’). Certain amounts in the financial statements and related footnote disclosures for the prior years have been reclassified to conform to the current presentation with no impact to previously reported net income or stockholders’ equity. Use of Estimates. The preparation of consolidated financial statements in conformity with U.S. 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, as well as the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Estimates may change as new information is obtained. The following discussion provides a summary of the Company’s significant accounting policies: Cash and Cash Equivalents. Cash and cash equivalents include cash on hand, cash balances due from banks and federal funds sold. Interest bearing deposits with financial institutions represent primarily cash held at the Federal Reserve Bank of San Francisco. At December 31, 2019 , there were no cash reserves required by the Board of Governors of the Federal Reserve System (“Federal Reserve”) for depository institutions based on the amount of deposits held. The Company maintains amounts due from banks that exceed federally insured limits. The Company has not experienced any losses in such accounts. 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. Impairment of Investments. Quarterly, the Company evaluates investment securities in an unrealized loss position for OTTI. In determining whether a security’s decline in fair value is other-than-temporary, the Company considers a number of factors including: (i) the length of time and the extent to which the fair value of the investment has been less than its amortized cost; (ii) the financial condition and near-term prospects of the issuer; (iii) the intent and ability of the Company to hold the investment for a period of time sufficient to allow for an anticipated recovery in fair value; (iv) downgrades in credit ratings; and (v) general market conditions which reflect prospects for the economy as a whole, including interest rates and sector credit spreads. If it is determined that an OTTI exists, and either the Company intends to sell the investment or it is likely the Company will be required to sell the investment before its anticipated recovery, the total amount of the OTTI, which is measured as the amount by which the investment’s amortized cost exceeds its fair value, is recognized in current period earnings. If the Company has the intent and ability to hold the investment and it is not more likely than not it will be required to sell the investment prior to an anticipated recovery of its amortized cost basis, the Company records in current period earnings the portion of OTTI deemed to be credit related, while the remaining portion of OTTI deemed to be non-credit related is recorded in accumulated other comprehensive income, net of tax. Credit related OTTI losses are determined through a discounted cash flow analysis, which incorporates assumptions concerning the estimated timing and amounts of expected cash flows. Non-credit related OTTI losses result from other factors such as changes in interest rates and general market conditions. The presentation of OTTI in the consolidated financial statements is on a gross basis with a reduction in the gross amount for the portion of the loss deemed non-credit related, which is recorded in accumulated other comprehensive income, net of tax. Federal Home Loan Bank Stock. The Bank is a member of the Federal Home Loan Bank System. Members are required to own a certain amount of stock based on the level of borrowings and other factors, and may invest in additional amounts. FHLB stock is carried at cost and periodically evaluated for impairment based on ultimate recovery of par value. Both cash and stock dividends are recorded as a component of interest income. Federal Reserve Bank Stock. The Bank is a member of the Federal Reserve Bank of San Francisco (the “FRB”). FRB stock is carried at cost, classified as a restricted security, and periodically evaluated for impairment based on ultimate recovery of par value. Both cash and stock dividends are recorded as a component of interest income. Loans Held for Sale. Loans that the Company has the intent to sell prior to maturity have been designated as held for sale at origination and are recorded at lower of cost or fair value. Gains or losses are recognized upon the sale of the loans on a specific identification basis. Loan Servicing Assets. Servicing assets are related to SBA loans sold and are recognized at the time of sale when servicing is retained with the income statement effect recorded in gains on sales of SBA loans. Servicing assets are initially recorded at fair value based on the present value of the contractually specified servicing fee, net of estimated servicing costs, over the estimated life of the loan, using a discount rate. The Company’s servicing costs approximates the industry average servicing costs of approximately 40 basis points. The servicing assets are subsequently amortized into noninterest income in proportion to, and over the period of, the estimated future net servicing income of the underlying loans. The Company periodically evaluates servicing assets for impairment based upon the fair value of the assets as compared to their carrying amount. The Company typically sells the guaranteed portion of SBA loans and retains the unguaranteed portion (“retained interest”). A portion of the premium on sale of SBA loans is recognized as gain on sale of loans at the time of the sale by allocating the carrying amount between the asset sold and the retained interest, based on their relative fair values. The remaining portion of the premium is recorded as a discount on the retained interest and is amortized over the remaining life of the loan as an adjustment to yield. The retained interest, net of any discount, are included in loans held for investment—net of allowance for loan losses in the accompanying 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. The loans are carried at amortized cost, net of discounts and premiums on purchased loans, deferred loan origination fees and costs and ALLL. Net deferred loan origination fees and costs on loans are amortized or accreted using the interest method over the expected life of the loans. Amortization of deferred loan fees and costs are discontinued for loans placed on nonaccrual. Any remaining deferred fees or costs and prepayment fees associated with loans that payoff 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. Interest on loans is recognized using the interest method and is only accrued 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 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, all interest previously accrued but not collected is reversed against current period interest income. 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. A loan is considered to be impaired when it is probable that the Company will be unable to collect all amounts due (principal and interest) according to the contractual terms of the loan agreement. The Company reviews loans for impairment when the loan is classified as substandard or worse, delinquent 90 days, determined by management to be collateral dependent, or when the borrower files bankruptcy or is granted concession which qualifies as a troubled debt restructuring. Measurement of impairment is based on the loan’s expected future cash flows discounted at the loan’s effective interest rate, measured by reference to an observable market value, if one exists, or the fair value of the collateral if the loan is deemed collateral dependent. The Company measures impairment on a loan-by-loan basis. Loans for which impairment has been determined are generally charged-off at such time the loan is classified as a loss. Allowance for Loan Losses. The Company maintains an ALLL at a level deemed appropriate by management to provide for known or probable incurred losses in the portfolio as of the date of the consolidated statements of financial condition. The Company has an internal loan review system and loss allowance methodology designed to provide for the detection of problem loans and an appropriate level of allowance to cover loan losses. Management’s determination of the adequacy of the ALLL is based on an evaluation of the composition of the portfolio, actual loss experience, industry charge-off experience on income property loans, current economic conditions and other relevant factors in the area in which the Company’s lending and real estate activities are based. These factors may affect the borrower’s ability to pay as well as the value of the underlying collateral securing loans. The allowance is calculated by applying loss factors to loans held for investment according to loan type and loan credit classification. The loss factors are based primarily upon the Bank’s historical loss experience and industry charge-off experience, and are evaluated on a quarterly basis. At December 31, 2019 , the following portfolio segments have been identified. Segments are groupings of similar loans at a level, for which the Company has adopted systematic methods of documentation for determining its allowance for loan losses: • Commercial and industrial (including Franchise) - C&I loans are secured by business assets including inventory, receivables and machinery and equipment to businesses located generally in our primary market area. Loan types includes revolving lines or credit, term loans, seasonal loans and loans secured by liquid collateral such as cash deposits or marketable securities. 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 fluctuate 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. • Commercial real estate (including owner occupied and non-owner occupied) - CRE loans include various type of loans which the Company holds real property as collateral. CRE lending activity is typically restricted to owner occupied or non-owner occupied. The primary risks of real estate 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. • 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 85.00% of the loan amount for loans up to $150,000 and 75.00% 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. • Agribusiness and farmland - We originate loans to the agricultural community to fund seasonal production and longer term investments in land, buildings, equipment, and livestock. Agribusiness loans are for the purpose of financing agricultural production to finance crops and livestock. Farmland loans include all land known to be used or usable for agricultural purposes, such as crop and livestock production and is secured by the land and improvements thereon. • Multi-family - Loans secured by multi-family and commercial real estate properties generally involve a greater degree of credit risk than one-to-four family loans. Because payments on loans secured by multi-family and commercial real estate properties are often dependent on the successful operation or management of the properties, repayment of these loans may be subject to adverse conditions in the real estate market or the economy. • One-to-four family - Although we do not originate, through our bank acquisitions, we have acquired first lien single family loans. 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. • Construction and land - We originate loans for the construction of one-to-four family and multi-family 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. • Consumer loans - In addition to consumer loans acquired through our various bank acquisitions, we originate a limited number of consumer loans, generally for banking customers 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. Various regulatory agencies, as an integral part of their examination process, periodically review the Company’s ALLL and loan review process. Such agencies may require the Company to recognize additions to the allowance based on judgments different from those of management. In the opinion of management, and in accordance with the credit loss allowance methodology, the present allowance is considered adequate to absorb probable incurred credit losses as of the date of these consolidated financial statements. Additions and reductions to the allowance are reflected in current operations. Charge-offs recorded against the allowance, for all loan segments, are made when specific loans are considered uncollectible or are transferred to other real estate owned and the fair value of the property is less than the Company’s recorded investment in the loan. Recoveries of amounts previously charged-off are credited to the allowance. Although management uses the best information available to make these estimates, future adjustments to the allowance may be necessary due to economic, operating, regulatory and other conditions that may extend beyond the Company’s control. Purchased Credit Impaired Loans. As part of business acquisitions, the Bank acquires certain loans that have shown evidence of credit deterioration since origination, referred to as PCI loans. These loans are recorded at the fair value, such that no ALLL is established upon their acquisition. The Company has elected to account for PCI loans individually. The Company estimates the amount and timing of expected cash flows for each purchased loan, and the expected cash flows in excess of the fair value is recorded as interest income over the remaining life of the loan and is referred to as the accretable yield. The excess of the loan’s contractual principal and interest over expected cash flows is not recorded and is referred to as the non-accretable difference. Periodically, the Company performs an evaluation of expected cash flows for PCI loans. Subsequent decreases in expected future cash flows beyond the expected cash flows as of the acquisition date are accounted for by establishing an ALLL for PCI loans through a charge to the provision for loan losses. If subsequent reforecasts indicate there has been a probable and significant increase in the level of expected future cash flows, the Company first reduces any previously established ALLL for PCI loans and then accounts for the remainder of the increase on a prospective basis through interest income as an adjustment to the accretable yield. Other Real Estate Owned. Real estate properties acquired through, or in lieu of, loan foreclosure are recorded at fair value, less estimated costs to sell, with any excess loan balance over the fair value of the property charged against the ALLL. 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 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. Premises and Equipment. Premises and equipment are carried at cost less accumulated depreciation and amortization. Depreciation and amortization are computed using the straight-line method over the estimated useful lives of the assets, which range from forty years for buildings, seven years for furniture, fixtures and equipment, and three years for computer and telecommunication equipment. The cost of leasehold improvements is amortized using the straight-line method over the shorter of the estimated useful life of the asset or the term of the related leases. The Company periodically evaluates the recoverability of long-lived assets, such as premises and equipment, to ensure the carrying value has not been impaired. Assets to be disposed of are reported at the lower of the carrying amount or fair value less costs to sell. Securities Sold Under Agreements to Repurchase. The Company enters into sales of securities under agreement to repurchase. These agreements are treated as financing arrangements and, accordingly, the obligations to repurchase the securities sold are reflected as liabilities in the Company’s consolidated financial statements. The securities collateralizing these agreements are delivered to several major national brokerage firms who arranged the transactions. The securities are reflected as assets in the Company’s consolidated financial statements. The brokerage firms may loan such securities to other parties in the normal course of their operations and agree to return the identical security to the Company at the maturity of the agreements. Bank Owned Life Insurance. BOLI is accounted for using the cash surrender value method and is recorded at its realizable value as an asset on the consolidated statements of financial condition. The Bank is the beneficiary under each policy. Changes in the cash surrender value of BOLI and the death benefits of an insured individual covered by these policies, after distribution to the insured’s beneficiaries, if any, are recorded as tax-exempt noninterest income on the consolidated statements of income. Goodwill and Core Deposit Intangible. 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 tested for impairment at least annually or more frequently if events and circumstances exist that indicate the necessity for such impairment tests to be performed. The Company typically performs its annual impairment testing in the fourth quarter. Intangible assets with definite useful lives are amortized over their estimated useful lives to their estimated residual values. As of December 31, 2019 , goodwill is the only intangible asset with an indefinite life recorded in the Company’s consolidated statements of financial condition. Core deposit intangible assets arising from whole bank acquisitions are amortized on either an accelerated basis, reflecting the pattern in which the economic benefits of the intangible asset is consumed or otherwise used up, or on a straight-line amortization method over their estimated useful lives, which ranges from six to eleven years . Loan Commitments and Related Financial Instruments. Financial instruments include off-balance sheet credit instruments, such as commitments to make loans and commercial letters of credit, issued to meet customer financing needs. The face amount for these items represents the exposure to loss, before considering customer collateral or ability to repay. Such financial instruments are recorded when they are funded. Subordinated Debentures. Long-term borrowings are carried at cost, adjusted for amortization of premiums and accretion of discounts, which are recognized in interest expense using the interest method. Debt issuance costs are recognized in interest expense using the interest method over the life of the instrument. Stock-Based Compensation. The Company issues various forms of stock-based compensation awards annually to officers and directors of the Company, including stock options, restricted stock awards and restricted stock units. The related compensation costs are recognized in the income statement based on the grant-date fair value over the period they are expected to vest, net of estimates for forfeitures. Estimates for forfeitures are based on the Company’s historical experience for each award type. A Black-Scholes model is utilized to estimate the fair value of stock options. The Black-Scholes model uses certain assumptions to determine grant-date fair value such as: expected volatility, expected term of the option, expected risk-free rate of interest and expected dividend yield on the Corporation’s common stock. The market price of the Corporation’s common stock at the grant-date is used for restricted stock awards in determining the grant-date fair value for those awards. Restricted stock units are granted to officers of the Company, and represent stock-based compensation awards that when ultimately settled, result in the payment of cash or the issuance of shares of the Corporation’s common stock to the grantee. As with other stock-based compensation awards, compensation cost for restricted stock units is recognized over the period in which the awards are expected to vest. Certain of the Corporation’s restricted stock units contain vesting conditions which are based on pre-determined performance targets. The level at which the associated performance targets are achieved can impact the ultimate settlement of the award with the grantee and thus the level of compensation expense ultimately recognized. Certain of these awards contain a market condition whereby the vesting of the award is based on the Company’s performance, such as total shareholder return, relative to its peers over a specified period of time. The grant date fair value of market based restricted stock units is determined through the use of an independent third party which employs the use of a Monte Carlo simulation. The Monte Carlo simulation estimates grant date fair value using input assumptions similar to those used in the Black-Scholes model, however, it also incorporates into the grant date fair value calculation the probability that the performance targets will be achieved. The grant date fair value of restricted stock units that do not contain a market condition for vesting is based on the price of the Corporation’s common stock on the grant date. Income Taxes. Deferred tax assets and liabilities are recorded for the expected future tax consequences of events that have been recognized in the Company’s financial statements or tax returns using the asset liability method. In estimating future tax consequences, all expected future events other than enactments of changes in the tax law or rates are considered. The effect on deferred taxes of a change in tax rates is recognized in income in the period that includes the enactment date. Deferred tax assets are recognized for temporary differences that will result in deductible amounts in future years and for tax carryforwards if, in the opinion of management, it is more likely than not that the deferred tax assets will be realized. At December 31, 2019 and 2018 , no valuation allowance was deemed necessary against the Company’s deferred tax assets. A tax position is recognized as a benefit only if it is “more likely than not” that the tax position would be sustained in a tax examination, with a tax examination being presumed to occur. The amount recognized is the largest amount of tax benefit that is greater than 50% likely of being realized on examination. For tax positions not meeting the “more likely than not” test, no tax benefit is recorded. The Company recognizes interest and / or penalties related to income tax matters in income tax expense. Earnings per Share. Earnings per share of common stock is calculated on both a basic and diluted basis, based on the weighted average number of common and common equivalent shares outstanding. Basic earnings per share excludes potential dilution from common equivalent shares, such as those associated with stock-based compensation awards, and is computed by dividing net income allocated to common stockholders by the weighted average number of common shares outstanding for the period. Diluted earnings per share reflects the potential dilution that could occur if securities or other contracts to issue common stock, such as common equivalent shares associated with stock-based compensation awards, were exercised or converted into common stock that would then share in the net earnings of the Corporation. Potential dilution from common equivalent shares is determined using the treasury stock method, reflecting the potential settlement of stock-based compensation awards resulting in the issuance of additional shares of the Corporation’s common stock. Stock-based compensation awards that would have an anti-dilutive effect have been excluded from the determination of earnings per common share. Restricted stock awards and restricted stock units are deemed par

Regulatory Capital Requirements

Regulatory Capital Requirements and Other Regulatory Matters	12 Months Ended
	Dec. 31, 2019
Banking and Thrift [Abstract]
Regulatory Capital Requirements and Other Regulatory Matters	Regulatory Capital Requirements and Other Regulatory Matters The Corporation and the Bank are subject to various regulatory capital requirements administered by federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory, and possibly additional discretionary, actions by regulators that, if undertaken, could have a direct material effect on the Corporation’s and the Bank’s financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Corporation and the Bank must meet specific capital guidelines that involve quantitative measures of the Corporation’s and the Bank’s assets, liabilities and certain off-balance sheet items as calculated under regulatory accounting practices. The Corporation’s and the Bank’s capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings and other factors. Quantitative measures established by regulation to ensure capital adequacy require the Bank to maintain capital in order to meet certain capital ratios to be considered adequately capitalized or well capitalized under the regulatory framework for prompt corrective action. As of the most recent formal notification from the Federal Reserve, the Bank was categorized as “well capitalized.” There are no conditions or events since that notification that management believes have changed the Bank’s categorization. Final comprehensive regulatory capital rules for U.S. banking organizations pursuant to the capital framework of the Basel Committee on Banking Supervision, generally referred to as “Basel III”, became effective for the Company and the Bank on January 1, 2015, subject to phase-in periods for certain of their components and other provisions. The most significant of the provisions of the new capital rules, which apply to the Company and the Bank are as follows: the phase-out of trust preferred securities from Tier 1 capital, the higher risk-weighting of high volatility and past due real estate loans and the capital treatment of deferred tax assets and liabilities above certain thresholds. The most significant of the provisions of the Final Capital Rules, which applied to the Company and the Bank were as follows: the phase-out of trust preferred securities from Tier 1 capital issued by 2013, the higher risk-weighting of high volatility and past due real estate loans and the capital treatment of deferred tax assets and liabilities above certain thresholds. Beginning January 1, 2016, Basel III implemented a requirement for all banking organizations to maintain a capital conservation buffer above the minimum risk-based capital requirements in order to avoid certain limitations on capital distributions, stock repurchases and discretionary bonus payments to executive officers. The capital conservation buffer is exclusively comprised of common equity tier 1 capital, and it applies to each of the three risk-based capital ratios but not to the leverage ratio. The capital conservation buffer increased by 0.625% each year beginning on January 1, 2016, with additional 0.625% increments annually, until fully phased in at 2.50% by January 1, 2019. The net unrealized gain or loss on available-for-sale securities is not included in computing regulatory capital. At December 31, 2019 , the Company and Bank are in compliance with the capital conservation buffer requirement and exceeded the minimum common equity Tier 1, Tier 1 and total capital ratio, inclusive of the fully phased-in capital conservation buffer, of 7.0%, 8.5% and 10.5%, respectively. As defined in applicable regulations and set forth in the table below, the Corporation and the Bank continue to exceed the regulatory capital minimum requirements and the Bank continues to exceed the “well capitalized” standards and the required conservation buffer at the dates indicated: Actual Minimum Required for Capital Adequacy Purposes Minimum Required Plus Capital Conservation Buffer (1) Required to be Well Capitalized Under Prompt Corrective Action Regulations Amount Ratio Amount Ratio Amount Ratio Amount Ratio (dollars in thousands) December 31, 2019 Pacific Premier Bancorp, Inc. Consolidated Tier 1 Leverage Ratio $ 1,123,740 10.54 % $ 426,597 4.00 % 426,597 4.00 % N/A N/A Common Equity Tier 1 Capital Ratio 1,116,185 11.35 % 442,612 4.50 % 688,508 7.00 % N/A N/A Tier 1 Capital to Ratio 1,123,740 11.42 % 590,149 6.00 % 836,045 8.50 % N/A N/A Total Capital Ratio 1,357,904 13.81 % 786,866 8.00 % 1,032,762 10.50 % N/A N/A Pacific Premier Bank Tier 1 Leverage Ratio $ 1,321,494 12.39 % $ 426,592 4.00 % 426,592 4.00 % $ 533,240 5.00 % Common Equity Tier 1 Capital Ratio 1,321,494 13.43 % 442,704 4.50 % 688,650 7.00 % 639,461 6.50 % Tier 1 Capital to Ratio 1,321,494 13.43 % 590,272 6.00 % 836,218 8.50 % 787,029 8.00 % Total Capital Ratio 1,360,471 13.83 % 787,029 8.00 % 1,032,975 10.50 % 983,786 10.00 % December 31, 2018 Pacific Premier Bancorp, Inc. Consolidated Tier 1 Leverage Ratio $ 1,112,132 10.38 % $ 428,751 4.00 % 428,751 4.00 % N/A N/A Common Equity Tier 1 Capital Ratio 1,087,164 10.88 % 449,505 4.50 % 699,230 7.00 % N/A N/A Tier 1 Capital to Ratio 1,112,132 11.13 % 599,340 6.00 % 849,065 8.50 % N/A N/A Total Capital Ratio 1,237,315 12.39 % 799,120 8.00 % 1,048,845 10.50 % N/A N/A Pacific Premier Bank Tier 1 Leverage Ratio $ 1,185,544 11.06 % $ 428,703 4.00 % 428,703 4.00 % $ 535,879 5.00 % Common Equity Tier 1 Capital Ratio 1,185,544 11.87 % 449,481 4.50 % 699,193 7.00 % 649,251 6.50 % Tier 1 Capital to Ratio 1,185,544 11.87 % 599,308 6.00 % 849,020 8.50 % 799,078 8.00 % Total Capital Ratio 1,226,258 12.28 % 799,078 8.00 % 1,048,790 10.50 % 998,847 10.00 % (1) For comparative purpose, fully phased-in capital conservation buffer is presented as of December 31, 2019 and 2018.

Investment Securities

Investment Securities	12 Months Ended
	Dec. 31, 2019
Investments, Debt and Equity Securities [Abstract]
Investment Securities	Investment Securities The amortized cost and estimated fair value of investment securities were as follows: December 31, 2019 Amortized Cost Gross Unrealized Gain Gross Unrealized Loss Estimated Fair Value (dollars in thousands) Investment securities available-for-sale: U.S. Treasury $ 60,457 $ 3,137 $ (39 ) $ 63,555 Agency 240,348 7,686 (1,676 ) 246,358 Corporate debt 149,150 2,217 (14 ) 151,353 Municipal bonds 384,032 13,450 (184 ) 397,298 Collateralized mortgage obligation: residential 9,869 123 (8 ) 9,984 Mortgage-backed securities: residential 494,404 7,603 (2,171 ) 499,836 Total investment securities available-for-sale 1,338,260 34,216 (4,092 ) 1,368,384 Investment securities held-to-maturity: Mortgage-backed securities: residential 36,114 922 — 37,036 Other 1,724 — — 1,724 Total investment securities held-to-maturity 37,838 922 — 38,760 Total investment securities $ 1,376,098 $ 35,138 $ (4,092 ) $ 1,407,144 December 31, 2018 Amortized Cost Gross Unrealized Gain Gross Unrealized Loss Estimated Fair Value (dollars in thousands) Investment securities available-for-sale: U.S. Treasury $ 59,688 $ 1,224 $ — $ 60,912 Agency 128,958 1,631 (519 ) 130,070 Corporate debt 104,158 291 (906 ) 103,543 Municipal bonds 238,914 1,941 (2,225 ) 238,630 Collateralized mortgage obligation: residential 24,699 64 (425 ) 24,338 Mortgage-backed securities: residential 554,751 1,112 (10,134 ) 545,729 Total investment securities available-for-sale 1,111,168 6,263 (14,209 ) 1,103,222 Investment securities held-to-maturity: Mortgage-backed securities: residential 43,381 148 (686 ) 42,843 Other 1,829 — — 1,829 Total investment securities held-to-maturity 45,210 148 (686 ) 44,672 Total investment securities $ 1,156,378 $ 6,411 $ (14,895 ) $ 1,147,894 Unrealized gains and losses on investment securities available-for-sale are recognized in stockholders’ equity as accumulated other comprehensive income or loss. At December 31, 2019 , the Company had accumulated other comprehensive income of $30.1 million , or $21.5 million net of tax, compared to accumulated other comprehensive loss of $7.9 million , or $5.6 million net of tax, at December 31, 2018 . Beginning the first quarter of 2019, the Bank no longer had HOA reverse repurchase agreements and unpledged all the supporting mortgage-backed securities. At December 31, 2018, mortgage-backed securities with an estimated par value of $20.3 million and a fair value of $20.9 million were pledged as collateral for the Bank’s HOA reverse repurchase agreements, which totaled $ 75,000 . The average balance of repurchase agreement facilities was $15.0 million during the year ended December 31, 2018. At December 31, 2019 and 2018 , there were not holdings of securities of any one issuer, other than the U.S. Government and its agencies, in an amount greater than 10% of shareholders’ 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 temporary, meaning: (i) those declines were due to interest rate changes and not to a deterioration in the creditworthiness of the issuers of those investment securities and (ii) we have the ability to hold those securities until there is a recovery in their values or until their maturity. If it is probable that the Company will be unable to collect all amounts due according to contractual terms of the debt security not impaired at acquisition, an other-than-temporary impairment shall be considered to have occurred. If an OTTI occurs, the cost basis of the security will be written down to its fair value as the new cost basis and the write down accounted for as a realized loss. There were no OTTI for the years ended December 31, 2019 , 2018 and 2017 . 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 unrealized loss position. December 31, 2019 Less than 12 months 12 months or Longer Total Number Fair Value Gross Unrealized Losses Number Fair Value Gross Unrealized Losses Number Fair Value Gross Unrealized Losses (dollars in thousands) Investment securities available-for-sale: U.S. Treasury 1 $ 10,194 $ (39 ) — $ — $ — 1 $ 10,194 $ (39 ) Agency 13 102,874 (1,340 ) 9 13,514 (336 ) 22 116,388 (1,676 ) Corporate debt 1 1,017 (14 ) — — — 1 1,017 (14 ) Municipal bonds 12 30,541 (184 ) — — — 12 30,541 (184 ) Collateralized mortgage obligation: residential — — — 1 603 (8 ) 1 603 (8 ) Mortgage-backed securities: residential 18 130,014 (1,681 ) 11 26,886 (490 ) 29 156,900 (2,171 ) Total investment securities available-for-sale 45 274,640 (3,258 ) 21 41,003 (834 ) 66 315,643 (4,092 ) Investment securities held-to-maturity: Mortgage-backed securities: residential — — — — — — — — — Other — — — — — — — — — Total investment securities held-to-maturity — — — — — — — — — Total investment securities 45 $ 274,640 $ (3,258 ) 21 $ 41,003 $ (834 ) 66 $ 315,643 $ (4,092 ) December 31, 2018 Less than 12 months 12 months or Longer Total Number Fair Value Gross Unrealized Losses Number Fair Value Gross Unrealized Losses Number Fair Value Gross Unrealized Losses (dollars in thousands) Investment securities available-for-sale: U.S. Treasury — $ — $ — — $ — $ — — $ — $ — Agency 15 $ 26,229 $ (333 ) 6 $ 10,434 $ (186 ) 21 $ 36,663 $ (519 ) Corporate debt 9 47,805 (471 ) 8 19,369 (435 ) 17 67,174 (906 ) Municipal bonds 60 45,083 (369 ) 102 69,693 (1,856 ) 162 114,776 (2,225 ) Collateralized mortgage obligation: residential 1 814 (1 ) 8 18,104 (424 ) 9 18,918 (425 ) Mortgage-backed securities: residential 20 70,839 (435 ) 120 324,864 (9,699 ) 140 395,703 (10,134 ) Total available-for-sale 105 190,770 (1,609 ) 244 442,464 (12,600 ) 349 633,234 (14,209 ) Investment securities held-to-maturity: Mortgage-backed securities: residential 3 11,256 (81 ) 3 15,741 (605 ) 6 26,997 (686 ) Other — — — — — — — — — Total held-to-maturity 3 11,256 (81 ) 3 15,741 (605 ) 6 26,997 (686 ) Total securities 108 $ 202,026 $ (1,690 ) 247 $ 458,205 $ (13,205 ) 355 $ 660,231 $ (14,895 ) The amortized cost and estimated fair value of investment securities available-for-sale at December 31, 2019 , 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 Cost Fair Value Amortized Cost Fair Value Amortized Cost Fair Value Amortized Cost Fair Value Amortized Cost Fair Value (dollars in thousands) Investment securities available-for-sale: Treasury $ 499 $ 500 $ 20,163 $ 20,586 $ 39,795 $ 42,469 $ — $ — $ 60,457 $ 63,555 Agency 1,000 1,014 40,647 42,162 166,244 169,070 32,457 34,112 240,348 246,358 Corporate — — — — 135,407 137,518 13,743 13,835 149,150 151,353 Municipal bonds — — 1,842 1,952 26,024 26,996 356,166 368,350 384,032 397,298 Collateralized mortgage obligation: residential — — — — 610 603 9,259 9,381 9,869 9,984 Mortgage-backed securities: residential — — 2,258 2,352 193,771 195,933 298,375 301,551 494,404 499,836 Total investment securities available-for-sale 1,499 1,514 64,910 67,052 561,851 572,589 710,000 727,229 1,338,260 1,368,384 Investment securities held-to-maturity: Mortgage-backed securities: residential — — 908 942 — — 35,206 36,094 36,114 37,036 Other — — — — — — 1,724 1,724 1,724 1,724 Total investment securities held-to-maturity — — 908 942 — — 36,930 37,818 37,838 38,760 Total investment securities $ 1,499 $ 1,514 $ 65,818 $ 67,994 $ 561,851 $ 572,589 $ 746,930 $ 765,047 $ 1,376,098 $ 1,407,144 During the years ended December 31, 2019 , 2018 and 2017 , the Company recognized gross realized gains on sales of available-for-sale securities in the amounts of $10.3 million , $1.6 million and $3.1 million , respectively. During the years ended December 31, 2019 , 2018 and 2017 , the Company recognized gross realized losses on sales of available-for-sale securities in the amounts of $1.8 million , $208,000 and $386,000 , respectively. The Company had net proceeds from the sale or maturity/call of available-for-sale securities of $551.8 million , $407.0 million and $268.6 million during the years ended December 31, 2019 , 2018 and 2017 , respectively. Investment securities with carrying values of $125.7 million and $215.3 million as of December 31, 2019 and 2018, respectively, were pledged to secure public deposits, other borrowings and for other purposes as required or permitted by law. FHLB, FRB and other stock At December 31, 2019 , the Company had $17.3 million in FHLB stock, $ 51.7 million in FRB stock and $24.1 million in other stock, all carried at cost. During the years ended December 31, 2019 , 2018 and 2017 , FHLB had repurchased $18.3 million , $24.9 million and $10.3 million , respectively, of the Company’s excess FHLB stock through their stock repurchase program. The Company evaluates its investments in FHLB and other stock for impairment periodically, including their capital adequacy and overall financial condition. No impairment losses have been recorded through December 31, 2019

Loans

Loans	12 Months Ended
	Dec. 31, 2019
Receivables [Abstract]
Loans	Loans The following table presents the composition of the loan portfolio as of the dates indicated: December 31, 2019 2018 (dollars in thousands) Business loans: Commercial and industrial $ 1,265,185 $ 1,364,423 Franchise 916,875 765,416 Commercial owner occupied (1) 1,674,092 1,679,122 SBA 175,815 193,882 Agribusiness 127,834 138,519 Total business loans 4,159,801 4,141,362 Real estate loans: Commercial non-owner occupied 2,072,374 2,003,174 Multi-family 1,576,870 1,535,289 One-to-four family (2) 254,779 356,264 Construction 410,065 523,643 Farmland 175,997 150,502 Land 31,090 46,628 Total real estate loans 4,521,175 4,615,500 Consumer loans: Consumer loans 50,922 89,424 Gross loans held for investment (3) 8,731,898 8,846,286 Deferred loan origination fees and discounts, net (9,587 ) (9,468 ) Loans held for investment 8,722,311 8,836,818 Allowance for loan losses (35,698 ) (36,072 ) Loans held for investment, net $ 8,686,613 $ 8,800,746 Loans held for sale, at lower of cost or fair value $ 1,672 $ 5,719 ______________________________ (1) Secured by real estate. (2) Includes second trust deeds. (3) Total gross loans held for investment for December 31, 2019 and December 31, 2018 net of the unaccreted fair value net purchase discounts of $40.7 million and $61.0 million , respectively. The Company originates SBA loans with the intent to sell the guaranteed portion of the loan prior to maturity and, therefore, designates them as held for sale. From time to time, the Company may purchase or sell other types of loans in order to manage concentrations, maximize interest income, change risk profiles, improve returns and generate liquidity. Loans Serviced for Others 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 and subsequently accounted for at the lower of cost or market value. At December 31, 2019 and 2018 , the servicing asset total $7.7 million and $8.5 million , respectively, and was included in other assets on the Company’s consolidated balance sheets. 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. The fair value of retained servicing rights is generally evaluated at the loan level using a discounted cash flow analysis utilizing current market assumptions derived from the secondary market. Key modeling assumptions include interest rates, prepayment assumptions, discount rate and estimated cash flows. At December 31, 2019 , and 2018 , the Company determined that no valuation allowance was necessary. Loans 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 $633.8 million at December 31, 2019 and $635.3 million at December 31, 2018 , including SBA participations serviced for others totaling $475.3 million at December 31, 2019 and $519.8 million at December 31, 2018 . Concentration of Credit Risk As of December 31, 2019 , the Company’s loan portfolio was primarily collateralized by various forms of real estate and business assets located principally in California, as well as in certain markets in the states of Arizona, Texas, Nevada, Oregon and Washington where we also have depository offices. The Company’s loan portfolio contains concentrations of credit in commercial non-owner occupied real estate, multi-family real estate, commercial owner occupied business loans and commercial and industrial business loans. The Company maintains policies approved by the Bank’s Board of Directors that address these concentrations and diversifies its loan portfolio through loan originations, purchases and sales of loans to meet approved concentration levels. While management believes that the collateral presently securing these loans is adequate, there can be no assurances that 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 $563.4 million for secured loans and $338.0 million for unsecured loans at December 31, 2019 . In order to manage concentration risk, the Bank maintains a house lending limit well below these statutory maximums. At December 31, 2019 , the Bank’s largest aggregate outstanding balance of loans to one borrower was $126.3 million comprised of $101.5 million and $24.8 million of secured and unsecured credit, respectively. Credit Quality and Credit Risk The Company’s credit quality is maintained and credit risk managed in two distinct areas. The first is the loan origination process, wherein the Bank underwrites credit and chooses which risks it is willing to accept. The Company maintains a comprehensive credit policy, which sets forth minimum and maximum tolerances for key elements of loan risk. The policy identifies and 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 seasoned underwriters and portfolio managers ensure all key risk factors are analyzed with most loan underwriting including a comprehensive global cash flow analysis of the prospective borrowers. The second 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 comprehensive fashion. Credit risk is monitored and managed within the loan portfolio by the Company’s portfolio managers based on a comprehensive credit and portfolio review policy. This policy requires a program of financial data collection and analysis, comprehensive loan reviews, property and/or business inspections and monitoring of portfolio concentrations and trends. 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. Individual loans, excluding the homogeneous loan portfolio, are reviewed at least every two years, and in most cases, more often including the assignment 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 federal banking 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 probable incurred losses inherent in the portfolio. Risk grades are reviewed regularly by the Company’s Credit and Portfolio Review committee, and are reviewed annually by an independent third-party, 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 an acceptable level of credit quality that contains no well-defined deficiencies or weaknesses. • 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. • 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 are commenced 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 or substandard or doubtful, the Company obtains an updated valuation of the underlying collateral. If the credit in question is also identified as impaired, a valuation allowance, if necessary, is established against such loan or a loss is recognized by a charge to the allowance for loan losses if management believes that the full amount of the Company’s recorded investment in the loan is no longer collectable. The Company typically continues to obtain or confirm updated valuations of underlying collateral for special mention and classified loans on an annual or biannual basis in order to have the most current indication of fair value. Once a loan is identified as impaired, an analysis of the underlying collateral is performed at least quarterly, and corresponding changes in any related valuation allowance are made or balances deemed to be fully uncollectable are charged-off. The following tables stratify the loan portfolio by the Company’s internal risk rating, including loans held for sale, as of the periods indicated: Credit Risk Grades Pass Special Mention Substandard Doubtful Total Gross Loans December 31, 2019 (dollars in thousands) Business loans Commercial and industrial $ 1,236,073 $ 13,226 $ 15,886 $ — $ 1,265,185 Franchise 898,191 7,851 10,833 — 916,875 Commercial owner occupied 1,659,391 11,167 3,534 — 1,674,092 SBA 166,011 3,255 8,221 — 177,487 Agribusiness 123,338 — 4,496 — 127,834 Real estate loans Commercial non-owner occupied 2,070,068 1,178 1,128 — 2,072,374 Multi-family 1,576,654 — 216 — 1,576,870 One-to-four family 254,218 — 561 — 254,779 Construction 410,065 — — — 410,065 Farmland 175,997 — — — 175,997 Land 31,073 — 17 — 31,090 Consumer loans Consumer loans 50,868 — 54 — 50,922 Totals $ 8,651,947 $ 36,677 $ 44,946 $ — $ 8,733,570 Credit Risk Grades Pass Special Mention Substandard Doubtful Total Gross Loans December 31, 2018 (dollars in thousands) Business loans Commercial and industrial $ 1,340,322 $ 12,005 $ 12,134 $ — $ 1,364,461 Franchise 760,795 4,431 190 — 765,416 Commercial owner occupied 1,660,994 1,580 16,548 — 1,679,122 SBA 189,006 2,289 6,906 — 198,201 Warehouse facilities 125,355 — 13,164 — 138,519 Real estate loans Commercial non-owner occupied 1,998,118 731 5,687 — 2,004,536 Multi-family 1,530,567 4,060 662 — 1,535,289 One-to-four family 350,083 728 5,453 — 356,264 Construction 523,643 — — — 523,643 Farmland 150,381 — 121 — 150,502 Land 46,008 132 488 — 46,628 Consumer loans Consumer loans 89,321 — 103 — 89,424 Totals $ 8,764,593 $ 25,956 $ 61,456 $ — $ 8,852,005 The following tables present the aging of loan portfolio, including loans held for sale, by type of loans as of the periods indicated: Days Past Due Current 30-59 60-89 90+ Total Gross Loans Non-accruing December 31, 2019 (dollars in thousands) Business loans Commercial and industrial $ 1,260,940 $ 422 $ 826 $ 2,997 $ 1,265,185 $ 4,637 Franchise 907,733 — 9,142 — 916,875 — Commercial owner occupied 1,673,761 331 — — 1,674,092 — SBA 174,271 169 613 2,434 177,487 2,519 Agribusiness 127,834 — — — 127,834 — Real estate loans Commercial non-owner occupied 2,070,067 1,179 — 1,128 2,072,374 1,128 Multi-family 1,576,870 — — — 1,576,870 — One-to-four family 254,779 — — — 254,779 366 Construction 410,065 — — — 410,065 — Farmland 175,997 — — — 175,997 — Land 31,090 — — — 31,090 — Consumer loans Consumer loans 50,914 5 2 1 50,922 — Totals $ 8,714,321 $ 2,106 $ 10,583 $ 6,560 $ 8,733,570 $ 8,650 Days Past Due Current 30-59 60-89 90+ Total Gross Loans Non-accruing December 31, 2018 (dollars in thousands) Business loans Commercial and industrial $ 1,362,017 $ 309 $ 1,204 $ 931 $ 1,364,461 $ 931 Franchise 759,546 5,680 — 190 765,416 190 Commercial owner occupied 1,677,967 343 — 812 1,679,122 599 SBA 195,051 524 — 2,626 198,201 2,739 Warehouse facilities 138,519 — — — 138,519 — Real estate loans Commercial non-owner occupied 2,004,536 — — — 2,004,536 — Multi-family 1,535,275 14 — — 1,535,289 — One-to-four family 356,219 30 9 6 356,264 398 Construction 523,643 — — — 523,643 — Farmland 150,502 — — — 150,502 — Land 46,628 — — — 46,628 — Consumer loans Consumer loans 89,249 146 29 — 89,424 — Totals $ 8,839,152 $ 7,046 $ 1,242 $ 4,565 $ 8,852,005 $ 4,857 Impaired Loans The following tables provide a summary of the Company’s investment in impaired loans as of and for the periods indicated: Recorded Investment Unpaid Principal Balance With Specific Allowance Without Specific Allowance Specific Allowance for Impaired Loans Average Recorded Investment Interest Income Recognized (dollars in thousands) December 31, 2019 Business loans Commercial and industrial $ 7,529 $ 7,755 $ — $ 7,529 $ — $ 3,649 $ 22 Franchise 10,834 10,835 — 10,834 — 3,079 151 Commercial owner occupied — — — — — 683 — SBA 3,132 4,070 — 3,132 — 2,996 16 Agribusiness — — — — — 6,602 363 Real estate loans Commercial non-owner occupied 1,128 1,184 — 1,128 — 411 — One-to-four family 366 412 — 366 — 379 — Land — — — — — 120 — Consumer loans Consumer — — — — — 19 — Totals $ 22,989 $ 24,256 $ — $ 22,989 $ — $ 17,938 $ 552 December 31, 2018 Business loans Commercial and industrial $ 1,023 $ 1,071 $ 550 $ 473 $ 118 $ 1,173 $ 1 Franchise 189 190 — 189 — 119 — Commercial owner occupied 599 628 — 599 — 1,549 — SBA 2,739 7,598 488 2,251 466 1,814 — Agribusiness 7,500 7,500 — 7,500 — 625 35 Real estate loans Commercial non-owner occupied — — — — — 538 — Multi-family — — — — — 500 — One-to-four family 408 453 — 408 — 1,206 — Land — — — — — 5 — Consumer loans Consumer — — — — — 33 — Totals $ 12,458 $ 17,440 $ 1,038 $ 11,420 $ 584 $ 7,562 $ 36 December 31, 2017 Business loans Commercial and industrial $ 1,160 $ 1,585 $ — $ 1,160 $ — $ 441 $ — Commercial owner occupied 97 98 97 — 55 153 — SBA 1,201 4,329 — 1,201 — 434 — Real estate loans Commercial non-owner occupied — — — — — 86 — One-to-four family 817 849 — 817 — 166 — Construction — — — — — 1,017 — Land 9 35 — 9 — 12 — Totals $ 3,284 $ 6,896 $ 97 $ 3,187 $ 55 $ 2,309 $ — The Company considers a loan to be impaired when, based on current information and events, it is probable the Company will be unable to collect all amounts due according to the contractual terms of the loan agreement or it is determined that the likelihood of the Company receiving all scheduled payments, including interest, when due is remote. The Company has no commitments to lend additional funds to debtors whose loans have been impaired. The Company reviews loans for impairment when the loan is classified as substandard or worse, delinquent 90 days, determined by management to be collateral dependent, or when the borrower files bankruptcy or is granted a troubled debt restructuring. Measurement of impairment is based on the loan’s expected future cash flows discounted at the loan’s effective interest rate, measured by reference to an observable market value, if one exists, or the fair value of the collateral if the loan is deemed collateral dependent. Loans are generally charged-off at the time that the loan is classified as a loss. Valuation allowances are determined on a loan-by-loan basis or by aggregating loans with similar risk characteristics. 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 TDR and considered impaired loans. 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. A TDR loan may be returned to accrual status when the loan is brought current, has performed in accordance with the contractual restructured terms for a time frame of at least six months, and the ultimate collectability of the total contractual restructured principal and interest in no longer in doubt. At December 31, 2019 , the Company had $3.0 million recorded investment in two TDR loans, with their terms being modified to extend the maturity date for 24 months or less, compared to no TDR loans at December 31, 2018 . These two TDRs were both current and on accrual status as of December 31, 2019 . The modification did not have an impact on the recorded investments. When loans are placed on nonaccrual status, previously accrued but unpaid interest is 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 collection of nterest. The Company had impaired loans on nonaccrual status of $8.7 million and $4.9 million at December 31, 2019 and 2018 , respectively. The Company did not record income from the receipt of cash payments related to nonaccruing loans during the years ended December 31, 2019 , 2018 and 2017 . The Company had no loans 90 days or more past due and still accruing at December 31, 2019 . The Company had $213,000 in loans 90 days or more past due and still accruing at December 31, 2018 , all of which were PCI loans. Income recognition for PCI loans is accounted for in accordance with ASC 310-30 . The Company had no consumer mortgage loans collateralized by residential real estate property for which formal foreclosure proceedings were in process as of December 31, 2019 and 2018 .

Allowance for Loan Losses

Allowance for Loan Losses	12 Months Ended
	Dec. 31, 2019
Provision for Loan and Lease Losses [Abstract]
Allowance for Loan Losses	Allowance for Loan Losses The Company’s ALLL covers estimated credit losses on individually evaluated loans that are determined to be impaired as well as estimated probable incurred losses inherent in the remainder of the loan portfolio. The ALLL is prepared using the information provided by the Company’s credit review process together with data from peer institutions and economic information gathered from published sources. The loan portfolio is segmented into groups of loans with similar 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. An estimated loss rate calculated using the Company’s historical loss rates adjusted for current portfolio trends, economic conditions, and other relevant internal and external factors, is applied to each group’s aggregate loan balances. The Company’s base ALLL factors are determined by management using the Bank’s annualized actual trailing charge-off data over a full credit cycle with an approximate average loss emergence period of 1 year to 1.6 years . Potential adjustments to those base factors are made for relevant internal and external factors. Those factors may include: • Changes in lending policies and procedures, including underwriting standards and collection, charge-offs and recovery practices; • Changes in the nature and volume of the loan portfolio, including new types of lending; • Changes in the experience, ability, and depth of lending management and other relevant staff that may have an impact on our loan portfolio; • Changes in the volume and severity of adversely classified or graded loans; • Changes in the quality of our loan review system and the management oversight; • The existence and effect of any concentrations of credit and changes in the level of such concentrations; • Changes in national, regional and local economic conditions, including trends in real estate values and the interest rate environment; • Changes in the value of the underlying collateral for collateral-dependent loans; and • The effect of external factors, such as competition, legal developments and regulatory requirements on the level of estimated credit losses in our current loan portfolio For loans risk graded as watch or worse, progressively higher potential loss factors are applied based on migration analysis of risk grading and net charge-offs. The following tables summarize the allocation of the ALLL as well as the activity in the ALLL attributed to various segments in the loan portfolio as of and for the periods indicated: Commercial and Industrial Franchise Commercial Owner Occupied SBA Agribusiness Commercial Non-owner Occupied Multi-family One-to-four Family Construction Farmland Land Consumer Loans Total (dollars in thousands) Balance, December 31, 2018 $ 10,821 $ 6,500 $ 1,386 $ 4,288 $ 3,283 $ 1,604 $ 725 $ 805 $ 5,166 $ 503 $ 772 $ 219 $ 36,072 Charge-offs (2,318 ) (2,531 ) (125 ) (2,238 ) — (625 ) — — — — — (16 ) (7,853 ) Recoveries 189 18 46 78 — — — 2 — — — 11 344 Provisions for (reduction in) loan losses 2,642 2,421 616 2,351 (760 ) 920 4 (152 ) (1,357 ) 355 (97 ) 192 7,135 Balance, December 31, 2019 $ 11,334 $ 6,408 $ 1,923 $ 4,479 $ 2,523 $ 1,899 $ 729 $ 655 $ 3,809 $ 858 $ 675 $ 406 $ 35,698 Amount of allowance attributed to: Specifically evaluated impaired loans $ — $ — $ — $ — $ — $ — $ — $ — $ — $ — $ — $ — $ — General portfolio allocation 11,334 6,408 1,923 4,479 2,523 1,899 729 655 3,809 858 675 406 35,698 Loans individually evaluated for impairment 7,529 10,834 — 3,132 — 1,128 — 366 — — — — 22,989 Specific reserves to total loans individually evaluated for impairment — % — % — % — % — % — % — % — % — % — % — % — % — % Loans collectively evaluated for impairment $ 1,257,656 $ 906,041 $ 1,674,092 $ 172,683 $ 127,834 $ 2,071,246 $ 1,576,870 $ 254,413 $ 410,065 $ 175,997 $ 31,090 $ 50,922 $ 8,708,909 General reserves to total loans collectively evaluated for impairment 0.90 % 0.71 % 0.11 % 2.59 % 1.97 % 0.09 % 0.05 % 0.26 % 0.93 % 0.49 % 2.17 % 0.80 % 0.41 % Total gross loans $ 1,265,185 $ 916,875 $ 1,674,092 $ 175,815 $ 127,834 $ 2,072,374 $ 1,576,870 $ 254,779 $ 410,065 $ 175,997 $ 31,090 $ 50,922 $ 8,731,898 Total allowance to gross loans 0.90 % 0.70 % 0.11 % 2.55 % 1.97 % 0.09 % 0.05 % 0.26 % 0.93 % 0.49 % 2.17 % 0.80 % 0.41 % Commercial and Industrial Franchise Commercial Owner Occupied SBA Agribusiness Commercial Non-owner Occupied Multi-family One-to-four Family Construction Farmland Land Consumer Loans Total (dollars in thousands) Balance, December 31, 2017 $ 9,721 $ 5,797 $ 767 $ 2,890 $ 1,291 $ 1,266 $ 607 $ 803 $ 4,569 $ 137 $ 993 $ 95 $ 28,936 Charge-offs (1,411 ) — (33 ) (102 ) — — — — — — — (409 ) (1,955 ) Recoveries 698 — 47 169 — — — 13 — — — 8 935 Provisions for (reduction in) loan losses 1,813 703 605 1,331 1,992 338 118 (11 ) 597 366 (221 ) 525 8,156 Balance, December 31, 2018 $ 10,821 $ 6,500 $ 1,386 $ 4,288 $ 3,283 $ 1,604 $ 725 $ 805 $ 5,166 $ 503 $ 772 $ 219 $ 36,072 Amount of allowance attributed to: Specifically evaluated impaired loans $ 118 $ — $ — $ 466 $ — $ — $ — $ — $ — $ — $ — $ — $ 584 General portfolio allocation 10,703 6,500 1,386 3,822 3,283 1,604 725 805 5,166 503 772 219 35,488 Loans individually evaluated for impairment 1,023 189 599 2,739 7,500 — — 408 — — — — 12,458 Specific reserves to total loans individually evaluated for impairment 11.53 % — % — % 17.01 % — % — % — % — % — % — % — % — % 4.69 % Loans collectively evaluated for impairment $ 1,363,400 $ 765,227 $ 1,678,523 $ 191,143 $ 131,019 $ 2,003,174 $ 1,535,289 $ 355,856 $ 523,643 $ 150,502 $ 46,628 $ 89,424 $ 8,833,828 General reserves to total loans collectively evaluated for impairment 0.79 % 0.85 % 0.08 % 2.00 % 2.51 % 0.08 % 0.05 % 0.23 % 0.99 % 0.33 % 1.66 % 0.24 % 0.40 % Total gross loans $ 1,364,423 $ 765,416 $ 1,679,122 $ 193,882 $ 138,519 $ 2,003,174 $ 1,535,289 $ 356,264 $ 523,643 $ 150,502 $ 46,628 $ 89,424 $ 8,846,286 Total allowance to gross loans 0.79 % 0.85 % 0.08 % 2.21 % 2.37 % 0.08 % 0.05 % 0.23 % 0.99 % 0.33 % 1.66 % 0.24 % 0.41 % Commercial Franchise Commercial SBA Agribusiness Commercial Multi-family One-to-four Construction Farmland Land Consumer Loans Total Balance, December 31, 2016 $ 6,362 $ 3,845 $ 1,193 $ 1,039 $ — $ 1,715 $ 2,927 $ 365 $ 3,632 $ — $ 198 $ 20 $ 21,296 Charge-offs (1,344 ) — — (8 ) — — — (10 ) — — — — (1,362 ) Recoveries 94 — 105 127 — — — 35 — — — 1 362 Provisions for (reduction in) loan losses 4,609 1,952 (531 ) 1,732 1,291 (449 ) (2,320 ) 413 937 137 795 74 8,640 Balance, December 31, 2017 $ 9,721 $ 5,797 $ 767 $ 2,890 $ 1,291 $ 1,266 $ 607 $ 803 $ 4,569 $ 137 $ 993 $ 95 $ 28,936 Amount of allowance attributed to: Specifically evaluated impaired loans $ — $ — $ 55 $ — $ — $ — $ — $ — $ — $ — $ — $ — $ 55 General portfolio allocation 9,721 5,797 712 2,890 1,291 1,266 607 803 4,569 137 993 95 28,881 Loans individually evaluated for impairment 1,160 — 97 1,201 — — — 817 — — 9 — 3,284 Specific reserves to total loans individually evaluated for impairment — % — % 56.70 % — % — % — % — % — % — % — % — % — % 1.67 % Loans collectively evaluated for impairment $ 1,085,499 $ 660,414 $ 1,289,116 $ 184,313 $ 116,066 $ 1,243,115 $ 794,384 $ 270,077 $ 282,811 $ 145,393 $ 31,224 $ 92,931 $ 6,195,343 General reserves to total loans collectively evaluated for impairment 0.90 % 0.88 % 0.06 % 1.57 % 1.11 % 0.10 % 0.08 % 0.30 % 1.62 % 0.09 % 3.18 % 0.10 % 0.47 % Total gross loans $ 1,086,659 $ 660,414 $ 1,289,213 $ 185,514 $ 116,066 $ 1,243,115 $ 794,384 $ 270,894 $ 282,811 $ 145,393 $ 31,233 $ 92,931 $ 6,198,627 Total allowance to gross loans 0.89 % 0.88 % 0.06 % 1.56 % 1.11 % 0.10 % 0.08 % 0.30 % 1.62 % 0.09 % 3.18 % 0.10 % 0.47 %

Other Real Estate Owned

Other Real Estate Owned	12 Months Ended
	Dec. 31, 2019
Other Real Estate [Abstract]
Other Real Estate Owned	Other Real Estate Owned The following summarizes the activity in other real estate owned for the years ended December 31: 2019 2018 2017 (dollars in thousands) Balance, beginning of year $ 147 $ 326 $ 460 Additions: Acquisitions — 524 326 Foreclosures 644 15 — Sales (329 ) (1,055 ) (507 ) Gain (loss) on sale (20 ) 346 47 Write downs (1 ) (9 ) — Balance, end of year $ 441 $ 147 $ 326 The Company had no consumer mortgage loans collateralized by residential real estate property for which formal foreclosure proceedings were in process as of December 31, 2019 and 2018 .

Premises and Equipment

Premises and Equipment	12 Months Ended
	Dec. 31, 2019
Property, Plant and Equipment [Abstract]
Premises and Equipment	Premises and Equipment The Company’s premises and equipment consisted of the following at December 31: 2019 2018 (dollars in thousands) Land $ 13,820 $ 18,902 Premises 16,697 25,361 Leasehold improvements 25,884 15,824 Furniture, fixtures and equipment 33,871 28,994 Automobiles 173 173 Subtotal 90,445 89,254 Less: accumulated depreciation 31,444 24,563 Total $ 59,001 $ 64,691 Depreciation expense for premises and equipment was $9.8 million for 2019 , $7.7 million for 2018 and $4.9 million for 2017 .

Goodwill and Core Deposit Intan

Goodwill and Core Deposit Intangibles	12 Months Ended
	Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Core Deposit Intangibles	Goodwill and Core Deposit Intangibles At December 31, 2019 , the Company had goodwill of $808.3 million . In 2019 , adjustments to goodwill in the amount of $404,000 for Grandpoint were recorded during the one-year measurement period subsequent to the acquisition date. In 2018 , additions to goodwill included $313.0 million due to the acquisition of Grandpoint and adjustments to goodwill in the amount of $1.8 million for PLZZ and $600,000 for HEOP during the one-year measurement period subsequent to the acquisition date. The following table presents changes in the carrying value of goodwill for the periods indicated: 2019 2018 2017 (dollars in thousands) Balance, beginning of year $ 808,726 $ 493,329 $ 102,490 Goodwill acquired during the year — 313,043 390,839 Purchase accounting adjustments (404 ) 2,354 — Impairment losses — — — Balance, end of year $ 808,322 $ 808,726 $ 493,329 Accumulated impairment losses at end of year $ — $ — $ — The Company assesses goodwill for impairment on an annual basis during the fourth quarter of each year, and more frequently if events or circumstances indicate that there may be impairment. The Company elected to perform a qualitative assessment to determine if it was more likely than not that the fair value of the Company exceeded its carrying value. As a result of this analysis, the Company determined that there was no goodwill impairment as of December 31, 2019 . At December 31, 2019 , the Company had core deposit intangibles of $83.3 million . The Company had no additions to core deposit intangibles during 2019 . The Company’s change in the gross balance of core deposit intangibles and the related accumulated amortization consisted of the following for the periods indicated: 2019 2018 2017 (dollars in thousands) Gross Balance of CDI: Balance, beginning of year $ 125,945 $ 54,809 $ 15,102 Additions due to acquisitions — 71,136 39,707 Balance, end of year 125,945 125,945 54,809 Accumulated amortization: Balance, beginning of year (25,389 ) (11,795 ) (5,651 ) Amortization (17,244 ) (13,594 ) (6,144 ) Balance, end of year (42,633 ) (25,389 ) (11,795 ) Net CDI, end of year $ 83,312 $ 100,556 $ 43,014 The Company amortizes the core deposit intangibles based on the projected useful lives of the related deposits ranging from six to eleven years . The estimated aggregate amortization expense related to our core deposit intangible assets for each of the next five years succeeding December 31, 2019 , in order from the present, is $15.4 million , $13.4 million , $11.7 million , $10.2 million and $9.2 million . The Company’s core deposit intangibles is evaluated annually for impairment or sooner if events and circumstances indicate possible impairment. Factors that may attribute to impairment include customer attrition and run-off. Management is unaware of any events and/or circumstances that would indicate a possible impairment to the core deposit intangibles.

Bank Owned Life Insurance

Bank Owned Life Insurance	12 Months Ended
	Dec. 31, 2019
Investments, All Other Investments [Abstract]
Bank Owned Life Insurance	Bank Owned Life Insurance At December 31, 2019 and 2018 , the Company had investments in BOLI of $113.4 million and $110.9 million , respectively. The Company recorded noninterest income associated with the BOLI policies of $3.5 million , $3.4 million and $2.3 million for the years ending December 31, 2019 , 2018 and 2017 , respectively.

Qualified Affordable Housing Pr

Qualified Affordable Housing Project Investments	12 Months Ended
	Dec. 31, 2019
Equity Method Investments and Joint Ventures [Abstract]
Qualified Affordable Housing Project Investments	Qualified Affordable Housing Project Investments The Company invests in certain affordable housing projects in the form of ownership interests in limited partnerships or limited liability companies that qualify for CRA and generate low income housing tax credits (“LIHTC”) and other tax benefits over an approximately 10 year period. The Company records its investments in qualified affordable housing partnerships, using either the cost method or the proportional amortization method. Under the cost method, the Company amortizes the initial cost of the investment as noninterest expense equally over the expected time period in which tax credits and other tax benefits will be received. Under the proportional amortization method, the Company amortizes the initial cost of the investment in proportion to the tax credits and other tax benefits that are allocated to the Company over the period of the investment. The net benefits of these investments, which is comprised of tax credits and operating loss tax benefits, net of investment amortization, are recognized in the income statement as a component of income tax expense (benefit). The Company’s net investment in qualified affordable housing projects that generate LIHTC at December 31, 2019 and 2018 was $53.9 million and $39.4 million , respectively, and are recorded in other assets in the consolidated statement of financial condition. Total unfunded commitments related to the investments in qualified affordable housing funds totaled $21.4 million and $13.4 million at December 31, 2019 and 2018 , respectively, and are recorded under accrued expenses and other liabilities. As of December 31, 2019 , the Company’s unfunded affordable housing commitments were estimated to be paid as follows: Amount Year Ending December 31, (dollars in thousands) 2020 $ 9,776 2021 6,596 2022 3,806 2023 187 2024 182 Thereafter 867 Total unfunded commitments $ 21,414 The following table presents tax credits and other tax benefits generated by operating losses from qualified affordable housing projects as well as amortization expense associated with these investments for the years ended December 31, 2019 , 2018 and 2017 . 2019 2018 2017 (dollars in thousands) Tax credit and other tax benefits recognized $ 6,506 $ 4,748 $ 1,719 Amortization of investments 5,527 4,574 1,599 There were no impairment losses related to LIHTC investments for the years ended December 31, 2019 , 2018 and 2017 .

Deposit Accounts

Deposit Accounts	12 Months Ended
	Dec. 31, 2019
Deposits [Abstract]
Deposit Accounts	Deposit Accounts Deposit accounts and weighted average interest rates consisted of the following at December 31: 2019 2018 Amount Weighted Amount Weighted (dollars in thousands) Noninterest-bearing checking $ 3,857,660 — % $ 3,495,737 — % Interest-bearing checking 586,019 0.43 % 526,088 0.38 % Money market 3,171,164 0.83 % 2,975,578 0.89 % Savings 235,824 0.16 % 250,271 0.14 % Certificates of deposit accounts 250,000 or less 500,331 1.59 % 569,877 1.44 % Greater than $250,000 547,511 1.77 % 840,800 2.12 % Total certificates of deposit accounts 1,047,842 1.69 % 1,410,677 1.84 % Total deposits $ 8,898,509 0.53 % $ 8,658,351 0.63 % The aggregate annual maturities of certificates of deposit accounts at December 31, 2019 are as follows: 2019 Amount Weighted Average Interest Rate (dollars in thousands) Within 3 months $ 571,143 1.70 % 4 to 6 months 240,132 1.87 % 7 to 12 months 138,515 1.46 % 13 to 24 months 76,617 1.49 % 25 to 36 months 11,182 1.24 % 37 to 60 months 9,644 1.71 % Over 60 months 609 2.08 % Total $ 1,047,842 1.69 % Interest expense on deposit accounts for the years ended December 31 is summarized as follows: 2019 2018 2017 (dollars in thousands) Checking accounts $ 2,340 $ 1,167 $ 365 Money market accounts 28,279 19,567 6,720 Savings 382 357 251 Certificates of deposit accounts 27,296 16,562 6,035 Total $ 58,297 $ 37,653 $ 13,371 Accrued interest on deposits, which is included in accrued expenses and other liabilities, was $590,000 at December 31, 2019 and $1.7 million at December 31, 2018 .

Federal Home Loan Bank Advances

Federal Home Loan Bank Advances and Other Borrowings	12 Months Ended
	Dec. 31, 2019
Long-term Federal Home Loan Bank Advances [Abstract]
Federal Home Loan Bank Advances and Other Borrowings	Federal Home Loan Bank Advances and Other Borrowings As of December 31, 2019 , the Company has a line of credit with the FHLB that provides for advances totaling up to 40% of the Company’s assets, equating to a credit line of $4.72 billion , of which $2.24 billion was available for borrowing. The available for borrowing was based on collateral pledged by real estate loans with an aggregate balance of $3.90 billion . At December 31, 2019 , the Company had $491.0 million in overnight FHLB advances and $26.0 million term advances, compared to $506.0 million in overnight FHLB advances and $161.5 million term advances at December 31, 2018 . The term advance have maturity dates ranging from February 2020 to June of 2022 and rates ranging from 1.78% to 2.47% . The following table summarizes activities in advances from the FHLB for the periods indicated: Year Ended December 31, 2019 2018 (dollars in thousands) Average balance outstanding $ 404,959 $ 529,278 Weighted average rate 2.43 % 2.06 % Maximum amount outstanding at any month-end during the year 1,091,596 883,612 Balance outstanding at end of year 517,026 667,606 Weighted average interest rate at year-end 1.69 % 2.51 % At December 31, 2019 , the Bank had unsecured lines of credit with eight correspondent banks for a total amount of $193.0 million and access through the Federal Reserve discount window to borrow $1.1 million . At December 31, 2019 and December 31, 2018 , the Company had no outstanding balances against these lines. The Company maintains additional sources of liquidity at the Corporation level. The $15.0 million line of credit with Wells Fargo Bank established in June 2017 matured in June 2019. At December 31, 2018 , the Corporation had no outstanding balances against this line. A new $15 million line of credit was established with US Bank on July 1, 2019 and will expire on July 1, 2020. At December 31, 2019 , the Corporation had no outstanding balances against this line. The following table summarizes activities in other borrowings for the periods indicated: Year Ended December 31, 2019 2018 (dollars in thousands) Average balance outstanding $ 229 $ 29,193 Weighted average rate 0.63 % 1.69 % Maximum amount outstanding at any month-end during the year 10,000 52,091 Balance outstanding at end of year — 75 Weighted average interest rate at year-end — % 0.01 %

Subordinated Debentures

Subordinated Debentures	12 Months Ended
	Dec. 31, 2019
Debt Disclosure [Abstract]
Subordinated Debentures	Subordinated Debentures As of December 31, 2019, the Company had three subordinated notes and two junior subordinated debt securities, with an aggregate carrying value of $215.1 million and a weighted interest rate of 5.37% , compared to $110.3 million with a weighted interest rate of 6.04% at December 31, 2018 . The increase of $104.8 million , or 95.0% , is primarily driven by the issuance of $125.0 million subordinated notes, and slightly offset by the redemption of junior subordinated debt securities totaling $18.6 million during 2019 . In August 2014, the Corporation issued $60.0 million in aggregate principal amount of 5.75% Subordinated Notes Due 2024 (the “Notes I”) in a private placement transaction to institutional accredited investors (the “Private Placement”). The Notes I bear interest at an annual fixed rate of 5.75% , with the first interest payment on the Notes made on March 3, 2015, and interest payable semiannually each March 3 and September 3 through September 3, 2024. At December 31, 2019 , the carrying value of the Notes was $59.4 million , net of unamortized debt issuance costs of $568,000 . The Notes can only be redeemed, in whole or in part, prior to the maturity date if the notes do not constitute Tier 2 Capital (for purposes of capital adequacy guidelines of the Board of Governors of the Federal Reserve). As of December 31, 2019 , the Notes I qualify as Tier 2 Capital. Principal and interest are due upon early redemption. In May 2019, the Corporation issued $125.0 million in aggregate principal amount of 4.875% Fixed-to-Floating Rate Subordinated Notes due May 15, 2029 (the “Notes II”), at a public offering price equal to 100% of the aggregate principal amount of the Notes II. The Corporation may redeem the Notes II on or after May 15, 2024. From and including the issue date, but excluding May 15, 2024, the Notes II will bear interest at an initial fixed rate of 4.875% per annum, payable semi-annually. From and including May 15, 2024, but excluding the maturity date or the date of earlier redemption, the Notes II will bear interest at a floating rate equal to the then-current three-month LIBOR plus a spread of 2.50% per annum, payable quarterly in arrears. At December 31, 2019 , the carrying value of the Notes II was $122.6 million , net of unamortized debt issuance cost of $2.4 million . At December 31, 2019 , the Notes II qualify as Tier 2 Capital. Principal and interest are due upon early redemption at any time, including prior to May 15, 2024 at our option, in whole but not in part, under the occurrence of special events defined within the trust indenture. In connection with the Private Placement, 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- for the Bank. The Company’s and Bank’s ratings were reaffirmed in February 2020 by KBRA following the announcement of the proposed acquisition of Opus. In March 2004, the Corporation issued $10.3 million in Floating Rate Junior Subordinated Deferrable Interest Debentures (the “Subordinated Debentures”), due and payable on April 6, 2034, to PPBI Trust I, a statutory trust created under the laws of the State of Delaware. Interest is payable quarterly on the Subordinated Debentures at three-month LIBOR plus 2.75% per annum, for an effective rate of 5.35% as of December 31, 2019 . The Subordinated Debentures are currently redeemable, in part or whole, at the option of the Corporation, at par. The Corporation also purchased a 3% minority interest totaling $310,000 in PPBI Trust I. The balance of the equity of PPBI Trust I is comprised of mandatorily redeemable preferred securities (“Trust Preferred Securities”) and is included in the Corporation’s other assets category. PPBI Trust I sold $10.0 million of trust preferred securities to investors in a private offering. On July 8, 2019, the Company used a portion of the proceeds from the issuance of the Notes II to redeem all $10.3 million outstanding principal amount of Subordinated Debentures. Prior to redemption, the Subordinated Debentures carried an interest rate of three-month LIBOR plus 2.75% per annum, for an effective rate of 5.35% per annum. The Subordinated Debentures were called at par, plus accrued and unpaid interest thereon through the date of redemption, for an aggregate amount of $10.4 million , and PPBI Trust I was dissolved. On April 1, 2017, as part of the HEOP acquisition, the Corporation assumed $5.2 million of floating rate junior subordinated debt securities associated with Heritage Oaks Capital Trust II. Interest is payable quarterly at three-month LIBOR plus 1.72% per annum, for an effective rate of 3.82% per annum as of December 31, 2019 . At December 31, 2019 , the carrying value of these debentures was $4.1 million , which reflects purchase accounting fair value adjustments of $1.2 million . The Corporation also assumed $3.1 million and $5.2 million of floating rate junior subordinated debt associated with Mission Community Capital Trust I and Santa Lucia Bancorp (CA) Capital Trust, respectively. For Santa Lucia Bancorp (CA) Capital Trust, the carrying value of these debentures was $3.9 million at December 31, 2019 , which reflects purchase accounting fair value adjustments of $1.3 million . Interest is payable quarterly at three-month LIBOR plus 1.48% per annum, for an effective rate of 3.47% per annum as of December 31, 2019 . These debentures are callable by the Corporation at par. On October 7, 2019, the Company used a portion of the proceeds from the issuance of the Notes II in May 2019 to redeem all outstanding principal amount of floating rate junior subordinated debt securities associated with Mission Community Capital Trust I. Prior to redemption, the junior subordinated debt securities carried an interest rate of three-month LIBOR plus 2.95% per annum, for an effective rate of 5.25% per annum, and were scheduled to mature on October 7, 2033. The junior subordinated debt securities were called at par, plus accrued and unpaid interest, for an aggregate amount of $3.1 million , and the associated business trust was dissolved. The Company recorded a loss on early debt extinguishment of $290,000 related to purchase accounting fair value adjustments. On November 1, 2017, as part of the PLZZ acquisition, the Company assumed three subordinated notes totaling $25.0 million at a fixed interest rate of 7.125% payable in arrears on a quarterly basis. The notes have a maturity date of June 26, 2025 and are also redeemable in whole, or in part, from time to time beginning in June 26, 2020 at an amount equal to 103.0% of principal plus accrued unpaid interest. The redemption price decreases 50 basis points each subsequent year. At December 31, 2019 , the carrying value of these subordinated notes was $25.1 million , which reflects purchase accounting fair value adjustments of $133,000 . On July 1, 2018, as part of the Grandpoint acquisition, the Corporation assumed $5.2 million of floating rate junior subordinated debt securities associated with First Commerce Bancorp Statutory Trust I. On September 17, 2019, the Company used a portion of the proceeds from the issuance of the Notes II in May 2019 to redeem all outstanding principal amount of these floating rate junior subordinated debt securities at par, plus accrued and unpaid interest thereon through the date of redemption, for an aggregate amount of $5.2 million . Prior to redemption, the junior subordinated debt securities carried an interest rate of three-month LIBOR plus 2.95% per annum, for an effective rate of 5.36% per annum. The Company recorded a loss on early debt extinguishment of $214,000 related to purchase accounting fair value adjustments, and First Commerce Bancorp Statutory Trust I was dissolved. The Corporation is not allowed to consolidate the statutory business trusts, which were formed for the purpose of issuing junior subordinated debentures, 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. The redemption of Tier 1 capital instruments associated with PPBI Trust I, First Commerce Bancorp Statutory Trust I and Mission Community Capital Trust I during the year ended December 31, 2019 reduced the Company’s Tier 1 capital by a total of $17.6 million . The Company’s regulatory capital ratios continued to exceed regulatory minimums to be well-capitalized and the fully phased-in capital conservation buffer, following these redemptions. The following table summarizes our outstanding subordinated debentures as of December 31: 2019 2018 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 $ 59,432 $ 59,312 Subordinated notes due 2029, 4.875% per annum until May 15, 2024, 3-month LIBOR +2.5% thereafter May 15, 2029 4.875 % 125,000 122,622 — Subordinated notes due 2025, 7.125% per annum June 26, 2025 7.125 % 25,000 25,133 25,158 Total subordinated notes 210,000 207,187 84,470 Subordinated debt PPBI Trust I, 3-month LIBOR+2.75% April 6, 2034 — — 10,310 Heritage Oaks Capital Trust II (junior subordinated debt), 3-month LIBOR+1.72% January 1, 2037 3.82 % 5,248 4,054 3,986 Santa Lucia Bancorp (CA) Capital Trust (junior subordinated debt), 3-month LIBOR+1.48% July 7, 2036 3.47 % 5,155 3,904 3,829 Mission Community Capital Trust (junior subordinated debt), 3-month LIBOR+2.95% October 7, 2033 — — 2,787 First Commerce Bancorp Statutory Trust I (junior subordinated debt), 3-month LIBOR+2.95% September 17, 2033 — — 4,931 Total subordinated debt 10,403 7,958 25,843 Total subordinated debentures $ 220,403 $ 215,145 $ 110,313 The following table summarizes activities for our subordinated debentures for the periods indicated: Year Ended December 31, 2019 2018 (dollars in thousands) Average balance outstanding $ 183,383 $ 107,732 Weighted average rate 5.82 % 6.23 % Maximum amount outstanding at any month-end during the year 233,119 110,313 Balance outstanding at end of year 215,145 110,313 Weighted average interest rate at year-end 5.37 % 6.04 %

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The following presents the components of income tax expense for the years ended December 31: 2019 2018 2017 (dollars in thousands) Current income tax provision: Federal $ 34,124 $ 19,787 $ 18,644 State 16,415 13,178 7,062 Total current income tax provision 50,539 32,965 25,706 Deferred income tax provision (benefit): Federal 4,645 8,142 8,294 Effect of the Tax Act — (1,441 ) 5,633 State 2,851 2,574 2,493 Total deferred income tax provision (benefit) 7,496 9,275 16,420 Total income tax provision $ 58,035 $ 42,240 $ 42,126 A reconciliation from statutory federal income taxes, which are based on a statutory rate of 21% for 2019 and 2018 and 35% for 2017 , to the Company’s total effective income tax provisions for the years ended December 31 is as follows: 2019 2018 2017 (dollars in thousands) Statutory federal income tax provision $ 45,729 $ 34,803 $ 35,778 State taxes, net of federal income tax effect 15,764 12,724 6,720 Cash surrender life insurance (565 ) (582 ) (645 ) Tax exempt interest (1,503 ) (1,135 ) (1,660 ) Non-deductible merger costs — 375 824 LIHTC investments (1,570 ) (761 ) (1,031 ) Effect of the Tax Act — (1,441 ) 5,633 Excess tax benefit of stock-based compensation (728 ) (1,811 ) (1,995 ) Prior year true-up — — (1,108 ) Other 908 68 (390 ) Total income tax provision $ 58,035 $ 42,240 $ 42,126 On December 22, 2017, the U.S. government enacted comprehensive tax legislation commonly referred to as the Tax Cuts and Jobs Act (“Tax Act”). Among other changes, the Tax Act reduced the U.S. federal corporate tax rate from 35% to 21%. The Company performed an initial assessment and reasonably estimated the effects of the Tax Act on its deferred tax amounts to be approximately $5.6 million , which was recorded as a charge to income tax expense in the fourth quarter of 2017, in accordance with SEC Staff Accounting Bulletin No. 118 (“SAB 118”). As required by SAB 118, the Company continued to reassess and refine the effects of the Tax Act on its deferred tax amounts during 2018. As a result, the Company recorded an income tax benefit of $1.4 million during the year ended December 31, 2018. As of December 31, 2018, the Company had completed the accounting for the income tax effects of the Tax Act. Deferred tax assets (liabilities) were comprised of the following temporary differences between the financial statement carrying amounts and the tax basis of assets at December 31: 2019 2018 (dollars in thousands) Deferred tax assets: Accrued expenses $ 2,126 $ 3,239 Net operating loss 4,765 6,115 Allowance for loan losses, net of bad debt charge-offs 10,415 10,709 Deferred compensation 3,616 3,649 State taxes 3,746 2,707 Loan discount 11,634 17,677 Stock-based compensation 3,535 3,234 Unrealized loss on available for sale securities — 2,308 Operating lease liabilities 13,334 — AMT credit and other state tax credit carryovers 416 96 Total deferred tax assets 53,587 49,734 Deferred tax liabilities: Operating lease right-of-use assets $ (12,382 ) $ — Deferred FDIC gain (228 ) (364 ) Core deposit intangibles (22,415 ) (27,388 ) Loan origination costs (4,828 ) (4,760 ) Depreciation (1,814 ) (1,192 ) Unrealized gain on available for sale securities (8,639 ) — Other (4,652 ) (403 ) Total deferred tax liabilities (54,958 ) (34,107 ) Valuation allowance — — Net deferred tax (liabilities) asset $ (1,371 ) $ 15,627 The Company accounts for income taxes by recognizing deferred tax assets and liabilities based upon temporary differences between the amounts for financial reporting purposes and tax basis of its assets and liabilities. Deferred tax assets are reduced by a valuation allowance when, in the opinion of management, it is more likely than not that some portion, or all, of the deferred tax asset will not be realized. In assessing the realization of deferred tax assets, management evaluates both positive and negative evidence, including the existence of any cumulative losses in the current year and the prior two years, the forecasts of future income, applicable tax planning strategies, and assessments of current and future economic and business conditions. This analysis is updated quarterly and adjusted as necessary. Based on the analysis, the Company has determined that a valuation allowance for deferred tax assets was not required as of December 31, 2019 and December 31, 2018 . Section 382 of the Internal Revenue Code imposes limitations on a corporation’s ability to use any net unrealized built in losses and other tax attributes, such as net operating loss and tax credit carryforwards, when it undergoes a 50% ownership change over a designated testing period. The Company has a Section 382 limited net operating loss carry forward of approximately $20.2 million for federal income tax purposes, which is scheduled to expire at various dates from 2026 to 2032. In addition, the Company has a Section 382 limited net operating loss carry forward of approximately $6.9 million for California franchise tax purposes, which is scheduled to expire at various dates from 2026 to 2031. The Company is expected to fully utilize the federal and California net operating loss carryforward before it expires with the application of the Section 382 annual limitation. The Company and its subsidiaries are subject to U.S. Federal income tax as well as income and franchise tax in multiple state jurisdictions. The statute of limitations related to the consolidated Federal income tax returns is closed for all tax years up to and including 2015. The expiration of the statute of limitations related to the various state income and franchise tax returns varies by state. The Company is currently not under examination in any taxing jurisdiction. A reconciliation of the beginning and ending amount of unrecognized tax benefits for the years ended December 31, 2019 and 2018 is as follows: 2019 2018 (dollars in thousands) Balance at January 1, $ 2,906 $ 2,906 Additions based on tax positions related to prior years — — Balance at December 31, $ 2,906 $ 2,906 The total amount of unrecognized tax benefits was $2.9 million and $2.9 million at December 31, 2019 and 2018 , respectively, and is primarily comprised of unrecognized tax benefits from an acquisition during 2017. The total amount of tax benefits that, if recognized, would favorably impact the effective tax rate was $0 at December 31, 2019 . The Company does not believe that the unrecognized tax benefits will change significantly within the next twelve months. The Company recognizes interest and penalties accrued related to unrecognized tax benefits in income tax expense. The Company had accrued for $424,000 and $246,000 of the interest and penalties at December 31, 2019 and 2018

Commitments, Contingencies and

Commitments, Contingencies and Concentrations of Risk	12 Months Ended
	Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments, Contingencies and Concentrations of Risk	Commitments, Contingencies and Concentrations of Risk Legal Proceedings. The Company is not involved in any material pending legal proceedings other than legal proceedings occurring in the ordinary course of business. Management believes that none of these legal proceedings, individually or in the aggregate, will have a material adverse impact on the results of operations or financial condition of the Company. Employment Agreements. The Company has entered into a three -year employment agreement with its Chief Executive Officer (“CEO”). This agreement provides for the payment of a base salary, a bonus based upon the CEO’s individual performance and the Company’s overall performance, provides a vehicle for the CEO’s use, and provides for the payment of severance benefits upon termination under specified circumstances. Additionally, the Bank has entered into one -year employment agreements with each of the following executive officers: the Bank’s President and Chief Operating Officer, the Chief Financial Officer, the Chief Risk Officer and Chief Innovation Officer. The agreements provide for the payment of a base salary, a bonus based upon the individual’s performance and the overall performance of the Bank, and the payment of severance benefits upon termination under specified circumstances. The term of each of their employment agreements automatically extends for an additional one year unless either the relevant executive on the one hand, or the Company on the other hand, gives written notice to the other party or parties hereto of such party’s or parties’ election not to extend the term, with such notice to be given not less than ninety (90) days prior to any such anniversary date, in which case the relevant employment agreement shall terminate at the conclusion of its remaining term. Availability of Funding Sources. The Company funds substantially all of the loans that it originates or purchases through deposits, internally generated funds and/or borrowings. The Company competes for deposits primarily on the basis of rates, and, as a consequence, the Company could experience difficulties in attracting deposits to fund its operations if the Company does not continue to offer deposit rates at levels that are competitive with other financial institutions. To the extent that the Company is not able to maintain its currently available funding sources or to access new funding sources, it would have to curtail its loan production activities or sell loans and investment securities earlier than is optimal. Any such event could have a material adverse effect on the Company’s results of operations, financial condition and cash flows.

Benefit Plans

Benefit Plans	12 Months Ended
	Dec. 31, 2019
Retirement Benefits [Abstract]
Benefit Plans	Benefit Plans 401(k) Plan. The Bank maintains an Employee Savings Plan (the “401(k) Plan”) which qualifies under Section 401(k) of the Internal Revenue Code. Under the 401(k) Plan, employees may contribute from 1% to 99% of their compensation, up to the dollar limit imposed by the IRS for tax purposes. In 2019 , 2018 and 2017 , the Bank matched 100% of contributions for the first three percent contributed and 50% on the next two percent contributed. Contributions made to the 401(k) Plan by the Bank amounted to $2.9 million for 2019 , $2.5 million for 2018 and $1.4 for 2017 . Pacific Premier Bancorp, Inc. 2004 Long-Term Incentive Plan (the “2004 Plan”). The 2004 Plan was approved by the Corporation’s stockholders in May 2004. The 2004 Plan authorized the granting of incentive stock options, nonstatutory stock options, stock appreciation rights and restricted stock (collectively “Awards”) equal to 525,500 shares of the common stock of the Corporation for issuances to executive, key employees, officers and directors. The 2004 Plan was in effect for a period of ten years starting in February 25, 2004, the date the 2004 Plan was adopted. Awards granted under the 2004 Plan were made at an exercise price equal to the fair market value of the stock on the date of grant. The Awards granted pursuant to the 2004 Plan vest at a rate of 33.3% per year. The 2004 Plan terminated in February 2014. Heritage Oaks Bancorp, Inc. 2005 Equity Based Compensation Plan (the “2005 Plan”). The 2005 Plan was acquired from Heritage Oaks Bancorp, Inc. on April 1, 2017. The 2005 Plan authorized the granting of Incentive Stock Options, Non-Qualified Stock Options, Stock Appreciation Rights, Restricted Stock Awards, Restricted Stock Units and Performance Share Cash Only Awards. As of December 31, 2016, no further grants can be made from this plan; however, Pacific Premier assumed all unvested and unexercised awards. Pacific Premier Bancorp, Inc. 2012 Long-Term Incentive Plan (the “2012 Plan”) . The 2012 Plan was approved by the Corporation’s stockholders in May 2012. The 2012 Plan originally authorized the granting of Awards equal to 620,000 shares of the common stock of the Corporation for issuances to executives, key employees, officers, and directors. The 2012 Plan will be in effect for a period of ten years from May 30, 2012, the date the 2012 Plan was adopted. Awards granted under the 2012 Plan will be made at an exercise price equal to the fair market value of the stock on the date of grant. Awards granted to officers and employees may include incentive stock options, non-qualified stock options, restricted stock, restricted stock units, and stock appreciation rights. The awards have vesting periods ranging from one to three years , where such vesting may occur in either three equal annual installments or one lump sum at the end of the third year. In May 2014, the Corporation’s stockholders approved an amendment to the 2012 Plan to increase the shares available under the plan by 800,000 shares to total 1,420,000 shares. In May 2015, the Corporation’s stockholders approved an amendment to the 2012 Plan to permit the grant of performance-based awards, including equity compensation awards that may not be subject to the deduction limitation of Section 162(m) of the Internal Revenue Code. The performance-based awards include (i) both performance-based equity compensation awards and performance-based cash bonus payments and (ii) restricted stock units. In May 2017, the Corporation’s stockholders approved an amendment to the 2012 Plan to increase the shares available under the plan by 3,580,000 shares to total 5,000,000 shares. Heritage Oaks Bancorp, Inc. 2015 Equity Based Compensation Plan (the “2015 Plan”). The 2015 Plan was acquired from Heritage Oaks Bancorp, Inc. on April 1, 2017. The 2015 plan was approved by the stockholders of Heritage Oaks Bancorp, Inc. in May 2015. The 2015 Plan authorized the granting of various types of share-based compensation awards to the employees and Board of Directors such as stock options, restricted stock awards, and restricted stock units. Under the 2015 Plan and following the Corporation’s assumption of the 2015 Plan, a maximum of 630,473 shares of the Corporation’s common stock at the date of acquisition were reserved and available to be issued. Shares issued under this plan, other than stock options and stock appreciation rights, were counted against the plan on a two shares for every one share actually issued basis. Awards that were canceled, expired, forfeited, fail to vest, or otherwise resulted in issued shares not being delivered to the grantee, were made available for the issuance of future share-based compensation awards. Additionally, under this plan, no one individual was to be granted shares in aggregate that exceed more than 250,000 shares during any calendar year. The 2015 Plan is still active and the Corporation assumed all unvested and unexercised awards. The Pacific Premier Bancorp, Inc. 2004 Long-Term Incentive Plan, Heritages Oaks Bancorp, Inc. 2005 Equity Based Compensation Plan, Pacific Premier Bancorp, Inc. 2012 Long-Term Incentive Plan and the Heritage Oaks Bancorp, Inc. 2015 Equity Based Compensation Plan are collectively the “Plans.” Stock Options As of December 31, 2019 , there are 3,000 options outstanding on the 2004 Plan with zero available for future awards. As of December 31, 2019 , there are 25,677 options outstanding on the 2005 Plan with zero available for future awards. As of December 31, 2019 , there are 399,466 options outstanding on the 2012 Plan with 2,879,949 available for future awards. As of December 31, 2019 , there are 24,961 options outstanding on the 2015 Plan with 655,429 available for future awards. Below is a summary of the stock option activity in the Plans for the year ended December 31, 2019 : 2019 Number of Stock Options Outstanding Weighted Average Exercise Price Per Share Weighted Average Remaining Contractual Term Aggregate Intrinsic value (in years) (dollars in thousands) Outstanding at January 1, 2019 681,933 $ 15.26 Granted — — Exercised (220,118 ) 13.17 Forfeited and expired (8,711 ) 15.84 Outstanding at December 31, 2019 453,104 $ 16.26 4.66 $ 7,401 Vested and exercisable at December 31, 2019 451,424 $ 16.24 4.66 $ 7,382 The total intrinsic value of options exercised during the years ended December 31, 2019 , 2018 and 2017 was $4.2 million , $8.4 million and $7.7 million , respectively. The amount charged against compensation expense in relation to the stock options was $132,000 for 2019 , $571,000 for 2018 and $927,000 for 2017 . At December 31, 2019 , unrecognized compensation expense related to the options is approximately $8,000 . Restricted Stock Awards and Restricted Stock Units Below is a summary of the activity for restricted stock and restricted stock units in the Plans for the years ended December 31, 2019 : 2019 Shares Weighted Average Grant-Date Fair Value Per Share Unvested at the beginning of the year 636,077 $ 35.98 Granted 423,823 29.92 Vested (287,754 ) 29.43 Forfeited (32,213 ) 34.76 Unvested at the end of the year 739,933 $ 35.11 Compensation expense for the year ended December 31, 2019 , 2018 and 2017 related to the above restricted stock grants amounted to $10.4 million , $8.5 million and $5.0 million , respectively. Restricted stock awards and restricted stock units are valued at the closing stock price on the date of grant and are expensed to stock based compensation expense over the period for which the related service is performed. The total grant date fair value of awards was $12.7 million for 2019 awards. At December 31, 2019 , unrecognized compensation expense related to restricted stock award and units is approximately $14.2 million , which expected to be recognized over a weighted-average period of 1.81 years . Other Plans Salary Continuation Plan. The Bank implemented a non-qualified supplemental retirement plan in 2006 (the “Salary Continuation Plan”) for certain executive officers of the Bank. The Salary Continuation Plan is unfunded. Deferred Compensation Plans. The Bank implemented a non-qualified supplemental retirement plan in 2006 (the “Supplemental Executive Retirement Plan” or “SERP”) for certain executive officers of the Bank. The Bank has acquired additional SERPs through the acquisitions of San Diego Trust Bank (“SDTB”), Independence Bank (“IDPK”) and HEOP. The SERP is unfunded. The expense incurred for the SERP for each of the last three years was $674,000 , $827,000 and $721,000 resulting in a deferred compensation liability of $10.8 million and $10.9 million as of the years ended 2019 and 2018 . In addition, with the acquisition of PLZZ, the Company acquired a deferred compensation plan that is unfunded and results in a deferred compensation asset and liability both in the amount of $1.8 million and $1.6 million as of the years ended 2019 and 2018 . The amounts expensed in 2019 , 2018 and 2017 for all of these plans amounted to $674,000 , $827,000 and $721,000 respectively. As of December 31, 2019 , 2018 and 2017 , $10.8 million , $10.9 million and $8.4 million , respectively, were recorded in other liabilities on the consolidated statements of condition for each of these plans.

Financial Instruments with Off-

Financial Instruments with Off-Balance Sheet Risk	12 Months Ended
	Dec. 31, 2019
Risks and Uncertainties [Abstract]
Financial Instruments with Off-Balance Sheet Risk	Financial Instruments with Off-Balance Sheet Risk The Company is a party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit in the form of originating loans or providing funds under existing lines or letters of credit. These commitments are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates and may require payment of a fee. Since many commitments are expected to expire, the total commitment amounts do not necessarily represent future cash requirements. Commitments involve, to varying degrees, elements of credit and interest rate risk in excess of the amounts recognized in the accompanying consolidated statements of financial condition. The Company’s exposure to credit loss in the event of nonperformance by the other party to the financial instrument for commitments to extend credit is represented by the contractual or notional amount of those instruments. The Company controls credit risk of its commitments to fund loans through credit approvals, limits and monitoring procedures. The Company uses the same credit policies in making commitments and conditional obligations as it does for on-balance sheet instruments. The Company evaluates each customer for creditworthiness. The Company receives collateral to support commitments when deemed necessary. The most significant categories of collateral include real estate properties underlying mortgage loans, liens on personal property and cash on deposit with the Bank. The Company maintains an allowance for credit losses to provide for commitments related to loans associated with undisbursed loan funds and unused lines of credit. The allowance for these commitments was $3.3 million at December 31, 2019 and $4.6 million at December 31, 2018 . The change in the allowance for credit losses for unfunded commitments during the year ended December 31, 2019 was attributable to lower unfunded loan commitments compared to previous year end. The Company’s commitments to extend credit at December 31, 2019 were $1.58 billion and $1.83 billion at December 31, 2018 . The 2019 balance is primarily composed of $ 1.10 billion of undisbursed commitments for C&I loans.

Fair Value of Financial Instrum

Fair Value of Financial Instruments	12 Months Ended
	Dec. 31, 2019
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. Therefore, for substantially all financial instruments, the fair value estimates presented herein are not necessarily indicative of the amounts the Company could have realized in a sales transaction at December 31, 2019 and 2018 . 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 for certain instruments measured at fair value, as well as the general classification of these instruments pursuant to the valuation hierarchy. Investment securities – Investment securities are generally valued based upon quotes obtained from an independent third-party pricing service, which uses 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. Derivative assets and liabilities – 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. Due to the observable nature of the inputs used in deriving the fair value of these derivative contracts, the valuation of interest rate swaps is classified as Level 2. The following fair value hierarchy tables present information about the Company’s assets measured at fair value on a recurring basis at the dates indicated: At December 31, 2019 Fair Value Measurement Using Level 1 Level 2 Level 3 Securities at Fair Value (dollars in thousands) Financial assets Investment securities available-for-sale: U.S. Treasury $ — $ 63,555 $ — $ 63,555 Agency — 246,358 — 246,358 Corporate — 151,353 — 151,353 Municipal bonds — 397,298 — 397,298 Collateralized mortgage obligation: residential — 9,984 — 9,984 Mortgage-backed securities: residential — 499,836 — 499,836 Total securities available-for-sale $ — $ 1,368,384 $ — $ 1,368,384 Derivative assets $ — $ 2,103 $ — $ 2,103 Financial liabilities Derivative liabilities $ — $ 2,103 $ — $ 2,103 At December 31, 2018 Fair Value Measurement Using Level 1 Level 2 Level 3 Securities at Fair Value (dollars in thousands) Financial assets Investment securities available-for-sale: U.S. Treasury $ — $ 60,912 $ — $ 60,912 Agency — 130,070 $ — 130,070 Corporate — 103,543 $ — 103,543 Municipal bonds — 238,630 — 238,630 Collateralized mortgage obligation: residential — 24,338 — 24,338 Mortgage-backed securities: residential — 545,729 — 545,729 Total securities available-for-sale $ — $ 1,103,222 $ — $ 1,103,222 Derivative assets $ — $ 1,681 $ — $ 1,681 Financial liabilities Derivative liabilities $ — $ 1,681 $ — $ 1,681 Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis Impaired Loans – A loan is considered impaired when it is probable that payment of interest and principal will not be made in accordance with the contractual terms of the loan agreement. Impairment is 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 non-accrual 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. 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 ALLL. The fair value of impaired loans and other real estate owned were determined using Level 3 assumptions, and represents impaired loan and other real estate owned balances for which a specific reserve has been established or on which a write down has been taken. 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 impaired loans and other real estate owned to determine fair value. In determining the net realizable value of the underlying collateral for impaired loans, the Company will then discount the valuation to cover both market price fluctuations and selling costs 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. At December 31, 2019 , substantially all of the Company’s impaired loans were evaluated based on the fair value of their underlying collateral based upon the most recent appraisal available to management. The Company completed partial charge-offs on certain impaired loans individually evaluated for impairment based on recent real estate appraisals and released the related specific reserves during the year ended December 31, 2019 . The Company has recorded no specific reserve on loans deemed impaired at December 31, 2019 . The following table presents our assets measured at fair value on a nonrecurring basis at December 31, 2019 and 2018 . At December 31, 2019 Level 1 Level 2 Level 3 Total Fair Value (dollars in thousands) Financial assets Impaired loans $ — $ — $ 2,257 $ 2,257 At December 31, 2018 Level 1 Level 2 Level 3 Total Fair Value (dollars in thousands) Financial assets Impaired loans $ — $ — $ 1,445 $ 1,445 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 December 31, 2019 Carrying Amount Level 1 Level 2 Level 3 Estimated Fair Value (dollars in thousands) Assets: Cash and cash equivalents $ 326,850 $ 326,850 $ — $ — $ 326,850 Interest-bearing time deposits with financial institutions 2,708 2,708 — — 2,708 Investments held-to-maturity 37,838 — 38,760 — 38,760 Investment securities available-for-sale 1,368,384 — 1,368,384 — 1,368,384 Loans held for sale 1,672 — 1,821 — 1,821 Loans held for investment, net 8,722,311 — — 8,691,019 8,691,019 Derivative asset 2,103 — 2,103 — 2,103 Accrued interest receivable 39,442 39,442 — — 39,442 Liabilities: Deposit accounts 8,898,509 7,850,667 1,048,583 — 8,899,250 FHLB advances 517,026 — 517,291 — 517,291 Other borrowings — — — — — Subordinated debentures 215,145 — 237,001 — 237,001 Derivative liability 2,103 — 2,103 — 2,103 Accrued interest payable 2,686 2,686 — — 2,686 At December 31, 2018 Carrying Amount Level 1 Level 2 Level 3 Estimated Fair Value (dollars in thousands) Assets: Cash and cash equivalents $ 203,406 $ 203,406 $ — $ — $ 203,406 Interest-bearing time deposits with financial institutions 6,143 6,143 — — 6,143 Investments held-to-maturity 45,210 — 44,672 — 44,672 Investment securities available-for-sale 1,103,222 — 1,103,222 — 1,103,222 Loans held for sale 5,719 — 6,072 — 6,072 Loans held for investment, net 8,836,818 — — 8,697,594 8,697,594 Derivative asset 1,929 — 1,681 — 1,681 Accrued interest receivable 37,837 37,837 — — 37,837 Liabilities: Deposit accounts 8,658,351 7,247,673 1,403,524 — 8,651,197 FHLB advances 667,606 — 666,864 — 666,864 Other borrowings 75 — 75 — 75 Subordinated debentures 110,313 — 115,613 — 115,613 Derivative liability 1,929 — 1,681 — 1,681 Accrued interest payable 3,255 3,255 — — 3,255 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. 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.

Earnings Per Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2019
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share In February 2019, the Company’s Compensation Committee of Board of Directors reviewed the various forms of outstanding equity awards, including restricted stock and restrict stock units (“RSUs”), and approved that unvested restricted stock awards will be considered participating securities. As a result of the different treatment of unvested restricted stock and unvested RSUs, beginning in 2019, earnings per common share is computed 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 Company’s earnings per share calculations for the periods indicated: For the Year Ended December 31, 2019 2018 2017 (dollars in thousands, except per share data) Basic Net income $ 159,718 $ 123,340 $ 60,100 Less: Earnings allocated to participating securities (1,650 ) — — Net income allocated to common stockholders $ 158,068 $ 123,340 $ 60,100 Weighted average common shares outstanding 60,339,714 53,963,047 37,705,556 Basic earnings per common share $ 2.62 $ 2.29 $ 1.59 Diluted Net income allocated to common stockholders $ 158,068 $ 123,340 $ 60,100 Weighted average common shares outstanding 60,339,714 53,963,047 37,705,556 Diluted effect of share-based compensation 352,567 650,010 805,705 Weighted average diluted common shares 60,692,281 54,613,057 38,511,261 Diluted earnings per common share $ 2.60 $ 2.26 $ 1.56 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. There are no RSUs or stock options that were anti-dilutive at December 31, 2019 and 2018 . The weighted average number of stock options excluded was 17,524

Derivative Instruments

Derivative Instruments	12 Months Ended
	Dec. 31, 2019
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 December 31, 2019 , the Company had over-the-counter derivative instruments and centrally-cleared derivative instruments with matched terms with an aggregate notional amount of $76.3 million and a fair value of $2.1 million . 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 future 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 condensed consolidated balance sheet. 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. Since the terms of the swap agreements between the Company and its borrowers have been matched with the terms of swap agreements with another financial institution, the adjustments for the change in their fair value offset each other and net to zero in non-interest 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 the swap agreements. Offsetting over-the-counter swap agreements the Company has with other financial institutions are collateralized with cash, and swap agreements with borrowers are secured by the collateral arrangements for the underlying loans these borrowers have with the Company. During the year ended December 31, 2019 , 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 December 31, 2019 are free-standing derivatives and are not designated as hedging instruments. The following tables summarize the Company’s derivative instruments, included in “other assets” and “other liabilities” in the consolidated statements of financial condition. December 31, 2019 Derivative Assets Derivative Liabilities Notional Fair Value Notional Fair Value (dollars in thousands) Derivative instruments not designated as hedging instruments: Interest rate swap contracts $ 76,314 $ 2,103 $ 76,314 $ 2,103 Total derivative instruments $ 76,314 $ 2,103 $ 76,314 $ 2,103 December 31, 2018 Derivative Assets Derivative Liabilities Notional Fair Value Notional Fair Value (dollars in thousands) Derivative instruments not designated as hedging instruments: Interest rate swap contracts $ 57,502 $ 1,681 $ 57,502 $ 1,681 Total derivative instruments $ 57,502 $ 1,681 $ 57,502 $ 1,681

Balance Sheet Offsetting

Balance Sheet Offsetting	12 Months Ended
	Dec. 31, 2019
Offsetting [Abstract]
Balance Sheet Offsetting	Balance Sheet Offsetting Derivative financial instruments may be eligible for offset in the consolidated balance sheets, 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 December 31, 2019 are presented in the table below: December 31, 2019 Gross Amounts Not Offset in the Consolidated Gross Amounts Recognized in the Consolidated Balance Sheets Gross Amounts Offset in the Consolidated Balance Sheets Net Amounts Presented in the Consolidated Balance Sheets Financial Instruments Cash Collateral (1) Net Amount (dollars in thousands) Financial assets: Derivatives not designated as $ 2,103 $ — $ 2,103 $ — $ — $ 2,103 Total $ 2,103 $ — $ 2,103 $ — $ — $ 2,103 Financial liabilities: Derivatives not designated as $ 2,107 $ (4 ) $ 2,103 $ — $ (1,678 ) $ 425 Total $ 2,107 $ (4 ) $ 2,103 $ — $ (1,678 ) $ 425 (1) Represents cash collateral held with counterparty bank. December 31, 2018 Gross Amounts Not Offset in the Consolidated Gross Amounts Recognized in the Consolidated Balance Sheets Gross Amounts Offset in the Consolidated Balance Sheets Net Amounts Presented in the Consolidated Balance Sheets Financial Instruments Cash Collateral (1) Net Amount (dollars in thousands) Financial assets: Derivatives not designated as $ 2,177 $ (496 ) $ 1,681 $ — $ — $ 1,681 Total $ 2,177 $ (496 ) $ 1,681 $ — $ — $ 1,681 Financial liabilities: Derivatives not designated as $ 1,681 $ — $ 1,681 $ — $ — $ 1,681 Total $ 1,681 $ — $ 1,681 $ — $ — $ 1,681 (1) Represents cash collateral held with counterparty bank.

Revenue Recognition

Revenue Recognition	12 Months Ended
	Dec. 31, 2019
Revenue from Contract with Customer [Abstract]
Revenue Recognition	Revenue Recognition The Company earns revenue from a variety of sources. The Company’s principal source of revenue is interest income on loans, investment securities and other interest earning assets, while the remainder of the Company’s revenue is earned from a variety of fees, service charges, gains and losses, and other income, all of which are classified as noninterest income. On January 1, 2018, the Company adopted ASU 2014-09, “Revenue from Contracts with Customers (Topic 606)”, and all subsequent amendments that modified ASC 606. ASC 606 does not apply to revenue associated with financial instruments, including revenue from loans and securities, certain noninterest income streams such as gain or loss associated with derivatives, and income from bank owned life insurance. Revenue streams within the scope of and accounted for under ASC 606 include: service charges and fees on deposit accounts, debit card interchange fees, fees from other services the Company 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 the 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 associated 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 Company without penalty, such as a deposit account agreement. These revenue streams are included in noninterest income. The following table provides a summary of the Company’s noninterest income, segregated by revenue streams within and outside the scope of ASC 606 for the periods indicated: For the Year Ended December 31, 2019 2018 2017 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 fees $ — $ 1,840 $ — $ 1,445 $ — $ 787 Service charges on deposit accounts 5,769 — 5,128 — 3,273 — Other service fee income 1,438 — 902 — 1,847 — Debit card interchange income 3,004 — 4,326 — 2,043 — Earnings on bank-owned life insurance — 3,486 — 3,427 — 2,279 Net gain from sales of loans — 6,642 — 10,759 — 12,468 Net gain from sales of investment securities — 8,571 — 1,399 — 2,737 Other income 1,015 3,471 1,242 2,399 491 5,189 Total noninterest income $ 11,226 $ 24,010 $ 11,598 $ 19,429 $ 7,654 $ 23,460 ______________________________ (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 U.S. 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. 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. The Company also employs a practical expedient with respect to contract acquisition costs, which are generally capitalized and amortized into expense. These costs relate to expenses incurred directly attributable to the efforts to obtain a contract. The practical expedient allows the Company to immediately recognize contract acquisition costs in current period earnings when these costs would have been amortized over a period of one year or less. At December 31, 2019 the Company did not have any material contract assets or liabilities in its consolidated financial statements related to revenue streams within the scope of ASC 606, and there were no material changes in those balances during the reporting period.

Leases (Notes)

Leases (Notes)	12 Months Ended
	Dec. 31, 2019
Leases [Abstract]
Leases	Leases The Company accounts for its leases in accordance with ASC 842, which was implemented on January 1, 2019, 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 in the Company’s consolidated balance sheets. At December 31, 2019 , all of the Company’s leases were classified as operating leases or short-term leases. Liabilities to make future lease payments and right of use assets are recorded for 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. For the year ended December 31, 2019 , lease expense totaled $14.1 million , and was recorded in premises and occupancy expense in the consolidated statements of income. For the year ended December 31, 2019 , lease expense attributable to operating leases totaled approximately $11.7 million . Lease expense attributable to short-term leases for the year ended December 31, 2019 totaled approximately $2.4 million . Short-term leases are leases that have a term of 12 months or less at commencement. The following table presents supplemental information related to operating leases as of the period indicated: December 31, 2019 (dollars in thousands) Balance Sheet: Operating lease right of use assets $ 43,177 Operating lease liabilities 46,498 Cash Flows: Operating cash flows from operating leases 11,747 The following table provides information related to minimum contractual lease payments and other information associated with the Company’s leases as of December 31, 2019 : 2020 2021 2022 2023 2024 Thereafter Total (dollars in thousands) Contractual base rents (1) : Operating leases $ 10,138 $ 10,602 $ 10,137 $ 9,055 $ 7,318 $ 7,265 $ 54,515 Short-term leases 143 7 — — — — 150 Total contractual base rents $ 10,281 $ 10,609 $ 10,137 $ 9,055 $ 7,318 $ 7,265 $ 54,665 Total liability to make lease payments $ 46,498 Difference in undiscounted and discounted future lease payments 8,167 Weighted average discount rate 6.13 % Weighted average remaining lease term (years) 5.4 (1) Contractual base rents reflect options to extend and renewals, and do not include property taxes and other operating expenses due under respective lease agreements. The Company from time to time leases portions of space it owns to other parties. Income received from these transactions is recorded on a straight-line basis over the term of the sublease. For the year ended December 31, 2019 and 2018 , rental income totaled $142,000 and $480,000 , respectively. The following table provides information related to minimum contractual lease payments for the periods indicated below as of December 31, 2018 (1) : 2019 2020 2021 2022 2023 Thereafter Total (dollars in thousands) Minimum contractual lease payments $ 11,468 $ 10,869 $ 10,133 $ 9,296 $ 8,124 $ 10,518 $ 60,408 (1) Contractual base rents in the table above are reflective of future lease obligations under ASC 840, prior to the implementation of ASC 842. The amounts in the table above do not reflect extensions or renewals and do not include property taxes and other operating expenses due under respective lease agreements. The amounts in the table above also reflect future lease obligations for certain leases that had not yet commenced as of December 31, 2018.

Related Parties

Related Parties	12 Months Ended
	Dec. 31, 2019
Related Party Transactions [Abstract]
Related Parties	Related Parties Loans to the Company’s executive officers and directors are made in the ordinary course of business, in accordance with applicable regulations and the Company’s policies and procedures. At December 31, 2019 and 2018 , the Company had related party loans outstanding totaling $5.5 million and $5.8 million , respectively. At the end of 2019 , the Company had related party deposits of $510.2 million compared to $471.9 million at the end of 2018 . John J. Carona was appointed to the Board of Directors on March 15, 2013, in connection with the Company’s acquisition of First Associations Bank (“FAB”). Mr. Carona is the President and Chief Executive Officer of Associations, Inc. (“Associa”), a Texas corporation that specializes in providing management and related services for homeowners associations located across the United States. At December 31, 2019 and 2018 , $468.9 million and $436.2 million , respectively, of the related party deposits were attributable to Associa.

Quarterly Results of Operations

Quarterly Results of Operations (Unaudited)	12 Months Ended
	Dec. 31, 2019
Quarterly Financial Information Disclosure [Abstract]
Quarterly Results of Operations (Unaudited)	Quarterly Results of Operations (Unaudited) The following is a summary of selected financial data presented below by quarter for the periods indicated: First Quarter Second Quarter Third Quarter Fourth Quarter (dollars in thousands, except per share data) For the year ended December 31, 2019: Interest income $ 131,243 $ 132,414 $ 132,604 $ 129,846 Interest expense 19,837 21,773 20,269 16,927 Provision for credit losses 1,526 334 1,562 2,297 Noninterest income 7,681 6,324 11,430 9,801 Noninterest expense 63,577 63,936 65,336 66,216 Income tax provision 15,266 14,168 15,492 13,109 Net income $ 38,718 $ 38,527 $ 41,375 $ 41,098 Earnings per share: Basic $ 0.62 $ 0.62 $ 0.69 $ 0.69 Diluted 0.62 0.62 0.69 0.69 For the year ended December 31, 2018: Interest income $ 90,827 $ 92,699 $ 128,876 $ 136,021 Interest expense 9,546 11,528 16,163 18,475 Provision for credit losses 2,253 1,761 1,981 2,258 Noninterest income 7,666 8,151 8,240 6,970 Noninterest expense 49,808 50,076 82,782 67,239 Income tax provision 8,884 10,182 7,798 15,376 Net income $ 28,002 $ 27,303 $ 28,392 $ 39,643 Earnings per share: Basic $ 0.61 $ 0.59 $ 0.46 $ 0.64 Diluted 0.60 0.58 0.46 0.63

Parent Company Financial Inform

Parent Company Financial Information	12 Months Ended
	Dec. 31, 2019
Condensed Financial Information Disclosure [Abstract]
Parent Company Financial Information	Parent Company Financial Information The Corporation is a California-based bank holding company organized in 1997 as a Delaware corporation and owns 100% of the capital stock of the Bank, its principal operating subsidiary. The Bank was incorporated and commenced operations in 1983. Condensed financial statements of the Corporation are as follows: PACIFIC PREMIER BANCORP, INC. STATEMENTS OF FINANCIAL CONDITION (Parent company only) At December 31, 2019 2018 (dollars in thousands) Assets Cash and cash equivalents $ 13,717 $ 13,160 Investment in subsidiaries 2,217,903 2,068,077 Other assets 1,230 1,689 Total Assets $ 2,232,850 $ 2,082,926 Liabilities Subordinated debentures $ 215,145 $ 110,313 Accrued expenses and other liabilities 5,111 2,916 Total Liabilities 220,256 113,229 Total Stockholders’ Equity 2,012,594 1,969,697 Total Liabilities and Stockholders’ Equity $ 2,232,850 $ 2,082,926 PACIFIC PREMIER BANCORP, INC. STATEMENTS OF OPERATIONS (Parent company only) For the Year Ended December 31, 2019 2018 2017 (dollars in thousands) Income Dividend income from the Bank $ 54,118 $ — $ — Interest income 51 57 36 Total income 54,169 57 36 Expense Interest expense on subordinated debentures 10,680 6,716 4,721 Compensation and benefits 3,106 2,757 2,832 Other noninterest expense 2,818 3,384 6,123 Total expense 16,604 12,857 13,676 Income (loss) before income tax provision 37,565 (12,800 ) (13,640 ) Income tax benefit (4,695 ) (3,680 ) (5,417 ) Income (loss) before undistributed income of subsidiary 42,260 (9,120 ) (8,223 ) Equity in undistributed earnings of subsidiary 117,458 132,460 68,323 Net income $ 159,718 $ 123,340 $ 60,100 PACIFIC PREMIER BANCORP, INC. SUMMARY STATEMENTS OF CASH FLOWS (Parent company only) For the Year Ended December 31, 2019 2018 2017 (dollars in thousands) CASH FLOWS FROM OPERATING ACTIVITIES Net income $ 159,718 $ 123,340 $ 60,100 Adjustments to reconcile net income to cash used in operating activities: Share-based compensation expense 10,528 9,033 5,809 Equity in undistributed earnings of subsidiary and dividends from the bank (117,458 ) (132,460 ) (68,323 ) Increase in current and deferred taxes 42 65 — Change in accrued expenses and other liabilities, net 3,131 (4,149 ) (365 ) Change in accrued interest receivable and other assets, net (4,826 ) 2,461 817 Net cash provided by (used) in operating activities 51,135 (1,710 ) (1,962 ) CASH FLOWS FROM INVESTING ACTIVITIES: Cash acquired in acquisitions, net — 2,985 — Other, net — (5,467 ) 601 Net cash (used in) provided by investing activities — (2,482 ) 601 CASH FLOWS FROM FINANCING ACTIVITIES: Redemption of junior subordinated debt securities (18,558 ) — — Proceeds from issuance of subordinated debt, net 122,453 — — Cash dividends paid (53,867 ) — — Repurchase and retirement of common stock (100,000 ) — — Proceeds from exercise of options 2,679 1,924 4,592 Restricted stock surrendered and canceled (3,285 ) (1,669 ) (1,258 ) Net cash (used in) provided by financing activities (50,578 ) 255 3,334 Net increase (decrease) in cash and cash equivalents 557 (3,937 ) 1,973 Cash and cash equivalents, beginning of year 13,160 17,097 15,124 Cash and cash equivalents, end of year $ 13,717 13,160 $ 17,097

Acquisitions

Acquisitions	12 Months Ended
	Dec. 31, 2019
Business Combinations [Abstract]
Acquisitions	Acquisitions Grandpoint Capital, Inc. Acquisition Effective as of July 1, 2018, the Company completed the acquisition of Grandpoint, the holding company of Grandpoint Bank, a California-chartered bank, with $3.1 billion in total assets, $2.4 billion in gross loans and $2.5 billion in total deposits as of June 30, 2018. Pursuant to the terms of the merger agreement, each outstanding share of Grandpoint voting common stock and Grandpoint non-voting common stock was converted into the right to receive 0.4750 shares of the Corporation’s common stock. The value of the total transaction consideration was approximately $602.2 million , after approximately $28.1 million in aggregate cash consideration payable to holders of Grandpoint share-based compensation awards by Grandpoint. The transaction consideration represented the issuance of 15,758,089 shares of the Corporation’s common stock, valued at $38.15 per share, which was the closing price of the Corporation’s common stock on June 29, 2018, the last trading day prior to the consummation of the acquisition. Goodwill in the amount of $312.6 million was recognized in the Grandpoint acquisition. Goodwill represents the future economic benefits rising 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 represents the Grandpoint assets acquired and liabilities assumed as of July 1, 2018 and the fair value adjustments and amounts recorded by the Company under the acquisition method of accounting: Grandpoint Fair Value Fair Book Value Adjustment Value (dollars in thousands) ASSETS ACQUIRED Cash and cash equivalents $ 147,551 $ — $ 147,551 Investment securities 395,905 (3,047 ) 392,858 Loans, gross 2,404,042 (51,325 ) 2,352,717 Allowance for loan losses (18,665 ) 18,665 — Fixed assets 6,015 3,107 9,122 Core deposit intangible 5,093 66,850 71,943 Deferred tax assets 14,185 (9,157 ) 5,028 Other assets 97,441 (436 ) 97,005 Total assets acquired $ 3,051,567 $ 24,657 $ 3,076,224 LIABILITIES ASSUMED Deposits $ 2,506,663 $ 266 $ 2,506,929 Borrowings 255,155 (232 ) 254,923 Other Liabilities 23,687 1,172 24,859 Total liabilities assumed 2,785,505 1,206 2,786,711 Excess of assets acquired over liabilities assumed $ 266,062 $ 23,451 289,513 Consideration paid 602,152 Goodwill recognized $ 312,639 Such fair values are preliminary estimates 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 net adjustments of $580,000 related to deferred tax assets and other assets. During the second quarter of 2019, the Company finalized its fair values with this acquisition. Plaza Bancorp Acquisition Effective as of November 1, 2017, the Company completed the acquisition of PLZZ, the holding company of Plaza Bank, a California chartered banking corporation headquartered in Irvine, California with $1.25 billion in total assets, $1.06 billion in gross loans and $1.08 billion in total deposits at October 31, 2017. Pursuant to the terms of the merger agreement, each outstanding share of PLZZ common stock was converted into the right to receive 0.2000 shares of the Corporation’s common stock. The value of the total deal consideration was approximately $245.8 million after approximately $6.5 million of aggregate cash consideration payable to holders of unexercised options and warrants exercisable for shares of PLZZ common stock by PLZZ. The transaction consideration represented the issuance of 6,049,373 shares of the Corporation’s common stock, which had a value of $40.40 per share, which was the closing price of the Corporation’s common stock on October 31, 2017, the last trading day prior to the consummation of the acquisition. Goodwill in the amount of $124.0 million was recognized in the PLZZ 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 represents the PLZZ assets acquired and liabilities assumed as of November 1, 2017 and the fair value adjustments and amounts recorded by the Company under the acquisition method of accounting: PLZZ Fair Value Fair Book Value Adjustment Value (dollars in thousands) ASSETS ACQUIRED Cash and cash equivalents $ 150,459 $ — $ 150,459 Loans, gross 1,069,359 (6,458 ) 1,062,901 Allowance for loan losses (13,009 ) 13,009 — Fixed assets 7,389 (1,424 ) 5,965 Core deposit intangible 198 10,575 10,773 Deferred tax assets 11,849 (6,123 ) 5,726 Other assets 19,495 (589 ) 18,906 Total assets acquired $ 1,245,740 $ 8,990 $ 1,254,730 LIABILITIES ASSUMED Deposits $ 1,081,727 $ 1,224 $ 1,082,951 Borrowings 40,755 397 41,152 Other Liabilities 8,956 (450 ) 8,506 Total liabilities assumed 1,131,438 1,171 1,132,609 Excess of assets acquired over liabilities assumed $ 114,302 $ 7,819 122,121 Consideration paid 245,761 Goodwill recognized $ 123,640 The fair values are estimates and are subject to adjustment for up to one year after the merger date. Since the acquisition, the Company has made net adjustments of $1.8 million related to core deposit intangibles, deferred tax assets, loans and other assets and liabilities. During the fourth quarter of 2018, the Company finalized its fair values with this acquisition. Heritage Oaks Bancorp Acquisition Effective as of April 1, 2017, the Company completed the acquisition of HEOP, the holding company of Heritage Oaks Bank, a California state-chartered bank based in Paso Robles, California (“Heritage Oaks Bank”) with $2.01 billion in total assets, $1.36 billion in gross loans and $1.67 billion in total deposits at March 31, 2017. Pursuant to the terms of the merger agreement, each outstanding share of HEOP common stock was converted into the right to receive 0.3471 shares of the Corporation’s common stock. The value of the total deal consideration was approximately $467.4 million , which included approximately $3.9 million of aggregate cash consideration payable to holders of Heritage Oaks share-based compensation awards, and the issuance of 11,959,022 shares of the Corporation’s common stock, which had a value of $38.55 per share, which was the closing price of the Corporation’s common stock on March 31, 2017, the last trading day prior to the consummation of the acquisition. Goodwill in the amount of $270.0 million was recognized in the HEOP 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 represents the HEOP assets acquired and liabilities assumed as of April 1, 2017 and the fair value adjustments and amounts recorded by the Company under the acquisition method of accounting: HEOP Book Value Fair Value Adjustments Fair Value ASSETS ACQUIRED (dollars in thousands) Cash and cash equivalents $ 78,728 $ — $ 78,728 Investment securities 445,299 (2,376 ) 442,923 Loans, gross 1,384,949 (20,261 ) 1,364,688 Allowance for loan losses (17,200 ) 17,200 — Fixed assets 35,567 (665 ) 34,902 Core deposit intangible 3,207 24,916 28,123 Deferred tax assets 17,850 (7,606 ) 10,244 Other assets 55,235 (21 ) 55,214 Total assets acquired $ 2,003,635 $ 11,187 $ 2,014,822 LIABILITIES ASSUMED Deposits $ 1,668,085 $ 1,465 $ 1,669,550 Borrowings 139,150 (116 ) 139,034 Other Liabilities 8,059 293 8,352 Total liabilities assumed 1,815,294 1,642 1,816,936 Excess of assets acquired over liabilities assumed $ 188,341 $ 9,545 197,886 Consideration paid 467,439 Goodwill recognized $ 269,553 The fair values are estimates and are subject to adjustment for up to one year after the merger date. Since the acquisition, the Company made net adjustments of $600,000 to deferred tax assets and other liabilities. During the second quarter of 2018, the Company finalized its fair values with this acquisition. The loan portfolios of Grandpoint, PLZZ and HEOP’s were recorded at fair value at the date of each acquisition. The valuation of loan portfolios of Grandpoint, PLZZ, and HEOP’s were performed as of the acquisition dates to assess their fair values. The loan portfolios were split into two groups: loan with credit deterioration and loans without credit deterioration, and then segmented further by loan type. The fair value was calculated on an individual loan basis using a discounted cash flow analysis. The discount rate utilized was based on a weighted average cost of capital, considering the cost of equity and cost of debt. Also factored into the fair value estimates were loss rates, recovery period and prepayment rates based on industry standards. For loans acquired from Grandpoint, PLZZ and HEOP, the contractual amounts due, expected cash flows to be collected, interest component and fair value as of the respective acquisition dates were as follows: Acquired Loans Grandpoint PLZZ HEOP (dollars in thousands) Contractual amounts due $ 3,496,905 $ 1,708,685 $ 1,717,230 Cash flows not expected to be collected 39,071 20,152 4,442 Expected cash flows 3,457,834 1,688,533 1,712,788 Interest component of expected cash flows 1,105,117 625,632 348,100 Fair value of acquired loans $ 2,352,717 $ 1,062,901 $ 1,364,688 In accordance with generally accepted accounting principles, there was no carryover of the allowance for loan losses that had been previously recorded by Grandpoint, PLZZ and HEOP. The Company also determined the fair value of the core deposit intangible, securities and deposits with the assistance of third-party valuations and determined the fair value of OREO from recent appraisals of the properties less estimated costs to sell. Since the fair value of intangible assets is calculated as if they were stand-alone assets, the presumption is that a hypothetical buyer of the intangible asset would be able to take advantage of potential after tax benefits resulting from the asset purchase. The core deposit intangible on non-maturing deposit represents future benefits arising from savings on source of funding and was determined by evaluating the underlying characteristics of the deposit relationships, including customer attrition, deposit interest rates, service charge income, overhead expense and costs of alternative funding. The value of the after tax savings on cost of fund is the present value over an estimated fifty-year horizon, using the discount rate applicable to the asset. In determining the fair value of certificates of deposit, a discounted cash flow analysis was used, which involved present valuing the contractual payments over the remaining life of the certificates of deposit at market-based interest rates. The operating results of the Company for the year ended December 31, 2018 include the operating results of Grandpoint, PLZZ and HEOP since their respective acquisition dates. The following table presents the net interest and other income, net income and earnings per share as if the merger with Grandpoint, PLZZ and HEOP were effective as of January 1, 2017. The unaudited pro forma information in the following table is intended for informational purposes only and is not necessarily indicative of our future operating results or operating results that would have occurred had the mergers been completed at the beginning of each respective year. N o assumptions have been applied to the pro forma results of operations regarding possible revenue enhancements, expense efficiencies or asset dispositions. There were no material, nonrecurring adjustments to the unaudited pro forma net interest and other income, net income and earnings per share presented below: Year Ended December 31, 2018 2017 (dollars in thousands, except per share data) Net interest and other income $ 473,748 $ 465,400 Net income 133,565 96,758 Basic earnings per share 2.16 1.58 Diluted earnings per share 2.14 1.56

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2019
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events Quarterly Cash Dividend On January 21, 2020, the Corporation’s Board of Directors declared a cash dividend of $0.25 per share, payable on February 14, 2020 to shareholders of record on February 3, 2020. Pacific Premier Bancorp, Inc. and Opus Bank On January 31, 2020, the Corporation and the Bank entered into a definitive agreement with Opus Bank, a California-chartered state bank (“Opus”), pursuant to which the Company will acquire Opus in an all-stock transaction valued at approximately $1.0 billion , or $26.82 per share, based on a closing price for the Corporation’s common stock of $29.80 on January 31, 2020. Upon consummation of the acquisition, holders of Opus common stock will have the right receive 0.90 shares of the Corporation’s common stock for each share of Opus stock. We are expected to issue approximately 34.7 million shares of our common stock in the Opus acquisition. Opus is a California-chartered state bank headquartered in Irvine, California with $8.0 billion in total assets, $5.9 billion in gross loans and $6.5 billion in total deposits as of December 31, 2019. Opus operates 46 banking offices located throughout California, Washington, Oregon and Arizona. The transaction will increase the Company’s total assets to approximately $20 billion on a pro forma basis as of December 31, 2019. The transaction is expected to close in the second quarter of 2020, subject to satisfaction of customary closing conditions, including regulatory approvals and approval from the Corporation’s and Opus’s shareholders. Opus directors who own shares of Opus common stock and certain executive officers and shareholders have entered into agreements with Pacific Premier, the Bank and Opus pursuant to which they have agreed, among other things, in their capacity as shareholders of Opus to vote their shares of Opus common stock and Opus preferred stock in favor of the merger agreement. For additional details, see “Item 1. Business—Recent Developments” and “Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations—Proposed Acquisition of Opus.”

Description of Business and S_2

Description of Business and Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2019
Accounting Policies [Abstract]
Description of Business	Description of Business. Pacific Premier Bancorp, Inc., a Delaware corporation organized in 1997 (the “Corporation”), is a California-based bank holding company that owns 100% of the capital stock of Pacific Premier Bank, a California-chartered commercial bank (the “Bank,” and together with the Corporation and its consolidated subsidiaries, the “Company”), the Corporation’s principal operating subsidiary. The Bank was incorporated and commenced operations in 1983. The principal business of the Company is attracting deposits from the general public and investing those deposits, together with funds generated from operations and borrowings, primarily in business loans and real estate property loans. At December 31, 2019 , the Company had 41 depository branches located in the counties of Orange, Los Angeles, Riverside, San Bernardino, San Diego, San Luis Obispo and Santa Barbara, California, as well as Pima and Maricopa Counties, Arizona, Clark County, Nevada and Clark County, Washington. The Company is subject to competition from other financial institutions. The Company is subject to the regulations of certain governmental agencies and undergoes periodic examinations by those regulatory authorities.
Principles of Consolidation	Principles of Consolidation. The consolidated financial statements include the accounts of Corporation and its wholly-owned subsidiary the Bank. 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 under the equity method whereby the subsidiary’s net earnings are recognized in the Company’s Statement of Income and the investment in these entities is included in Other Assets on the Company’s Consolidated Statements of Financial Condition. The Company is organized and operates as a single reporting segment, principally engaged in the commercial banking business. All significant intercompany accounts and transactions have been eliminated in consolidation.
Basis of Financial Statement Presentation	Basis of Financial Statement Presentation. The accompanying consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States (‘’U.S. GAAP’’). Certain amounts in the financial statements and related footnote disclosures for the prior years have been reclassified to conform to the current presentation with no impact to previously reported net income or stockholders’ equity.
Use of Estimates	Use of Estimates. The preparation of consolidated financial statements in conformity with U.S. 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, as well as the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Estimates may change as new information is obtained.
Cash and Cash Equivalents	Cash and Cash Equivalents. Cash and cash equivalents include cash on hand, cash balances due from banks and federal funds sold. Interest bearing deposits with financial institutions represent primarily cash held at the Federal Reserve Bank of San Francisco. At December 31, 2019 , there were no cash reserves required by the Board of Governors of the Federal Reserve System (“Federal Reserve”) for depository institutions based on the amount of deposits held. The Company maintains amounts due from banks that exceed federally insured limits. The Company has not experienced any losses in such accounts.
Securities	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/Available-for-sale	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. 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.
Impairment of Investments	Impairment of Investments. Quarterly, the Company evaluates investment securities in an unrealized loss position for OTTI. In determining whether a security’s decline in fair value is other-than-temporary, the Company considers a number of factors including: (i) the length of time and the extent to which the fair value of the investment has been less than its amortized cost; (ii) the financial condition and near-term prospects of the issuer; (iii) the intent and ability of the Company to hold the investment for a period of time sufficient to allow for an anticipated recovery in fair value; (iv) downgrades in credit ratings; and (v) general market conditions which reflect prospects for the economy as a whole, including interest rates and sector credit spreads. If it is determined that an OTTI exists, and either the Company intends to sell the investment or it is likely the Company will be required to sell the investment before its anticipated recovery, the total amount of the OTTI, which is measured as the amount by which the investment’s amortized cost exceeds its fair value, is recognized in current period earnings. If the Company has the intent and ability to hold the investment and it is not more likely than not it will be required to sell the investment prior to an anticipated recovery of its amortized cost basis, the Company records in current period earnings the portion of OTTI deemed to be credit related, while the remaining portion of OTTI deemed to be non-credit related is recorded in accumulated other comprehensive income, net of tax. Credit related OTTI losses are determined through a discounted cash flow analysis, which incorporates assumptions concerning the estimated timing and amounts of expected cash flows. Non-credit related OTTI losses result from other factors such as changes in interest rates and general market conditions. The presentation of OTTI in the consolidated financial statements is on a gross basis with a reduction in the gross amount for the portion of the loss deemed non-credit related, which is recorded in accumulated other comprehensive income, net of tax.
Federal Home Loan Bank Stock	Federal Home Loan Bank Stock. The Bank is a member of the Federal Home Loan Bank System. Members are required to own a certain amount of stock based on the level of borrowings and other factors, and may invest in additional amounts. FHLB stock is carried at cost and periodically evaluated for impairment based on ultimate recovery of par value. Both cash and stock dividends are recorded as a component of interest income.
Federal Reserve Bank Stock	Federal Reserve Bank Stock.
Loans Held for Sale	Loans Held for Sale. Loans that the Company has the intent to sell prior to maturity have been designated as held for sale at origination and are recorded at lower of cost or fair value. Gains or losses are recognized upon the sale of the loans on a specific identification basis.
Loan Servicing Assets	Loan Servicing Assets. Servicing assets are related to SBA loans sold and are recognized at the time of sale when servicing is retained with the income statement effect recorded in gains on sales of SBA loans. Servicing assets are initially recorded at fair value based on the present value of the contractually specified servicing fee, net of estimated servicing costs, over the estimated life of the loan, using a discount rate. The Company’s servicing costs approximates the industry average servicing costs of approximately 40 basis points. The servicing assets are subsequently amortized into noninterest income in proportion to, and over the period of, the estimated future net servicing income of the underlying loans. The Company periodically evaluates servicing assets for impairment based upon the fair value of the assets as compared to their carrying amount.
Loans Held for Investment	Loans Held for Investment. Loans held for investment are loans the Company has the ability and intent to hold until their maturity. The loans are carried at amortized cost, net of discounts and premiums on purchased loans, deferred loan origination fees and costs and ALLL. Net deferred loan origination fees and costs on loans are amortized or accreted using the interest method over the expected life of the loans. Amortization of deferred loan fees and costs are discontinued for loans placed on nonaccrual. Any remaining deferred fees or costs and prepayment fees associated with loans that payoff 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. Interest on loans is recognized using the interest method and is only accrued 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 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, all interest previously accrued but not collected is reversed against current period interest income. 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. A loan is considered to be impaired when it is probable that the Company will be unable to collect all amounts due (principal and interest) according to the contractual terms of the loan agreement. The Company reviews loans for impairment when the loan is classified as substandard or worse, delinquent 90 days, determined by management to be collateral dependent, or when the borrower files bankruptcy or is granted concession which qualifies as a troubled debt restructuring. Measurement of impairment is based on the loan’s expected future cash flows discounted at the loan’s effective interest rate, measured by reference to an observable market value, if one exists, or the fair value of the collateral if the loan is deemed collateral dependent. The Company measures impairment on a loan-by-loan basis. Loans for which impairment has been determined are generally charged-off at such time the loan is classified as a loss.
Allowance for Loan Losses	Allowance for Loan Losses. The Company maintains an ALLL at a level deemed appropriate by management to provide for known or probable incurred losses in the portfolio as of the date of the consolidated statements of financial condition. The Company has an internal loan review system and loss allowance methodology designed to provide for the detection of problem loans and an appropriate level of allowance to cover loan losses. Management’s determination of the adequacy of the ALLL is based on an evaluation of the composition of the portfolio, actual loss experience, industry charge-off experience on income property loans, current economic conditions and other relevant factors in the area in which the Company’s lending and real estate activities are based. These factors may affect the borrower’s ability to pay as well as the value of the underlying collateral securing loans. The allowance is calculated by applying loss factors to loans held for investment according to loan type and loan credit classification. The loss factors are based primarily upon the Bank’s historical loss experience and industry charge-off experience, and are evaluated on a quarterly basis. At December 31, 2019 , the following portfolio segments have been identified. Segments are groupings of similar loans at a level, for which the Company has adopted systematic methods of documentation for determining its allowance for loan losses: • Commercial and industrial (including Franchise) - C&I loans are secured by business assets including inventory, receivables and machinery and equipment to businesses located generally in our primary market area. Loan types includes revolving lines or credit, term loans, seasonal loans and loans secured by liquid collateral such as cash deposits or marketable securities. 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 fluctuate 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. • Commercial real estate (including owner occupied and non-owner occupied) - CRE loans include various type of loans which the Company holds real property as collateral. CRE lending activity is typically restricted to owner occupied or non-owner occupied. The primary risks of real estate 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. • 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 85.00% of the loan amount for loans up to $150,000 and 75.00% 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. • Agribusiness and farmland - We originate loans to the agricultural community to fund seasonal production and longer term investments in land, buildings, equipment, and livestock. Agribusiness loans are for the purpose of financing agricultural production to finance crops and livestock. Farmland loans include all land known to be used or usable for agricultural purposes, such as crop and livestock production and is secured by the land and improvements thereon. • Multi-family - Loans secured by multi-family and commercial real estate properties generally involve a greater degree of credit risk than one-to-four family loans. Because payments on loans secured by multi-family and commercial real estate properties are often dependent on the successful operation or management of the properties, repayment of these loans may be subject to adverse conditions in the real estate market or the economy. • One-to-four family - Although we do not originate, through our bank acquisitions, we have acquired first lien single family loans. 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. • Construction and land - We originate loans for the construction of one-to-four family and multi-family 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. • Consumer loans - In addition to consumer loans acquired through our various bank acquisitions, we originate a limited number of consumer loans, generally for banking customers 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. Various regulatory agencies, as an integral part of their examination process, periodically review the Company’s ALLL and loan review process. Such agencies may require the Company to recognize additions to the allowance based on judgments different from those of management. In the opinion of management, and in accordance with the credit loss allowance methodology, the present allowance is considered adequate to absorb probable incurred credit losses as of the date of these consolidated financial statements. Additions and reductions to the allowance are reflected in current operations. Charge-offs recorded against the allowance, for all loan segments, are made when specific loans are considered uncollectible or are transferred to other real estate owned and the fair value of the property is less than the Company’s recorded investment in the loan. Recoveries of amounts previously charged-off are credited to the allowance. Although management uses the best information available to make these estimates, future adjustments to the allowance may be necessary due to economic, operating, regulatory and other conditions that may extend beyond the Company’s control.
Purchased Credit Impaired Loans	Purchased Credit Impaired Loans. As part of business acquisitions, the Bank acquires certain loans that have shown evidence of credit deterioration since origination, referred to as PCI loans. These loans are recorded at the fair value, such that no ALLL is established upon their acquisition. The Company has elected to account for PCI loans individually. The Company estimates the amount and timing of expected cash flows for each purchased loan, and the expected cash flows in excess of the fair value is recorded as interest income over the remaining life of the loan and is referred to as the accretable yield. The excess of the loan’s contractual principal and interest over expected cash flows is not recorded and is referred to as the non-accretable difference. Periodically, the Company performs an evaluation of expected cash flows for PCI loans. Subsequent decreases in expected future cash flows beyond the expected cash flows as of the acquisition date are accounted for by establishing an ALLL for PCI loans through a charge to the provision for loan losses. If subsequent reforecasts indicate there has been a probable and significant increase in the level of expected future cash flows, the Company first reduces any previously established ALLL for PCI loans and then accounts for the remainder of the increase on a prospective basis through interest income as an adjustment to the accretable yield.
Other Real Estate Owned	Other Real Estate Owned. Real estate properties acquired through, or in lieu of, loan foreclosure are recorded at fair value, less estimated costs to sell, with any excess loan balance over the fair value of the property charged against the ALLL. 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 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.
Premises and Equipment	Premises and Equipment. Premises and equipment are carried at cost less accumulated depreciation and amortization. Depreciation and amortization are computed using the straight-line method over the estimated useful lives of the assets, which range from forty years for buildings, seven years for furniture, fixtures and equipment, and three years for computer and telecommunication equipment. The cost of leasehold improvements is amortized using the straight-line method over the shorter of the estimated useful life of the asset or the term of the related leases. The Company periodically evaluates the recoverability of long-lived assets, such as premises and equipment, to ensure the carrying value has not been impaired. Assets to be disposed of are reported at the lower of the carrying amount or fair value less costs to sell.
Securities Sold Under Agreements to Repurchase	Securities Sold Under Agreements to Repurchase. The Company enters into sales of securities under agreement to repurchase. These agreements are treated as financing arrangements and, accordingly, the obligations to repurchase the securities sold are reflected as liabilities in the Company’s consolidated financial statements. The securities collateralizing these agreements are delivered to several major national brokerage firms who arranged the transactions. The securities are reflected as assets in the Company’s consolidated financial statements. The brokerage firms may loan such securities to other parties in the normal course of their operations and agree to return the identical security to the Company at the maturity of the agreements.
Bank Owned Life Insurance	Bank Owned Life Insurance. BOLI is accounted for using the cash surrender value method and is recorded at its realizable value as an asset on the consolidated statements of financial condition. The Bank is the beneficiary under each policy. Changes in the cash surrender value of BOLI and the death benefits of an insured individual covered by these policies, after distribution to the insured’s beneficiaries, if any, are recorded as tax-exempt noninterest income on the consolidated statements of income.
Goodwill and Core Deposit Intangible	Goodwill and Core Deposit Intangible. 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 tested for impairment at least annually or more frequently if events and circumstances exist that indicate the necessity for such impairment tests to be performed. The Company typically performs its annual impairment testing in the fourth quarter. Intangible assets with definite useful lives are amortized over their estimated useful lives to their estimated residual values. As of December 31, 2019 , goodwill is the only intangible asset with an indefinite life recorded in the Company’s consolidated statements of financial condition. Core deposit intangible assets arising from whole bank acquisitions are amortized on either an accelerated basis, reflecting the pattern in which the economic benefits of the intangible asset is consumed or otherwise used up, or on a straight-line amortization method over their estimated useful lives, which ranges from six to eleven years .
Loan Commitments and Related Financial Instruments	Loan Commitments and Related Financial Instruments. Financial instruments include off-balance sheet credit instruments, such as commitments to make loans and commercial letters of credit, issued to meet customer financing needs. The face amount for these items represents the exposure to loss, before considering customer collateral or ability to repay. Such financial instruments are recorded when they are funded.
Subordinated Debentures	Subordinated Debentures. Long-term borrowings are carried at cost, adjusted for amortization of premiums and accretion of discounts, which are recognized in interest expense using the interest method. Debt issuance costs are recognized in interest expense using the interest method over the life of the instrument.
Stock-Based Compensation	Stock-Based Compensation. The Company issues various forms of stock-based compensation awards annually to officers and directors of the Company, including stock options, restricted stock awards and restricted stock units. The related compensation costs are recognized in the income statement based on the grant-date fair value over the period they are expected to vest, net of estimates for forfeitures. Estimates for forfeitures are based on the Company’s historical experience for each award type. A Black-Scholes model is utilized to estimate the fair value of stock options. The Black-Scholes model uses certain assumptions to determine grant-date fair value such as: expected volatility, expected term of the option, expected risk-free rate of interest and expected dividend yield on the Corporation’s common stock. The market price of the Corporation’s common stock at the grant-date is used for restricted stock awards in determining the grant-date fair value for those awards. Restricted stock units are granted to officers of the Company, and represent stock-based compensation awards that when ultimately settled, result in the payment of cash or the issuance of shares of the Corporation’s common stock to the grantee. As with other stock-based compensation awards, compensation cost for restricted stock units is recognized over the period in which the awards are expected to vest. Certain of the Corporation’s restricted stock units contain vesting conditions which are based on pre-determined performance targets. The level at which the associated performance targets are achieved can impact the ultimate settlement of the award with the grantee and thus the level of compensation expense ultimately recognized. Certain of these awards contain a market condition whereby the vesting of the award is based on the Company’s performance, such as total shareholder return, relative to its peers over a specified period of time. The grant date fair value of market based restricted stock units is determined through the use of an independent third party which employs the use of a Monte Carlo simulation. The Monte Carlo simulation estimates grant date fair value using input assumptions similar to those used in the Black-Scholes model, however, it also incorporates into the grant date fair value calculation the probability that the performance targets will be achieved. The grant date fair value of restricted stock units that do not contain a market condition for vesting is based on the price of the Corporation’s common stock on the grant date.
Income Taxes	Income Taxes. Deferred tax assets and liabilities are recorded for the expected future tax consequences of events that have been recognized in the Company’s financial statements or tax returns using the asset liability method. In estimating future tax consequences, all expected future events other than enactments of changes in the tax law or rates are considered. The effect on deferred taxes of a change in tax rates is recognized in income in the period that includes the enactment date. Deferred tax assets are recognized for temporary differences that will result in deductible amounts in future years and for tax carryforwards if, in the opinion of management, it is more likely than not that the deferred tax assets will be realized. At December 31, 2019 and 2018 , no valuation allowance was deemed necessary against the Company’s deferred tax assets. A tax position is recognized as a benefit only if it is “more likely than not” that the tax position would be sustained in a tax examination, with a tax examination being presumed to occur. The amount recognized is the largest amount of tax benefit that is greater than 50% likely of being realized on examination. For tax positions not meeting the “more likely than not” test, no tax benefit is recorded. The Company recognizes interest and / or penalties related to income tax matters in income tax expense.
Earnings per Share	Earnings per Share. Earnings per share of common stock is calculated on both a basic and diluted basis, based on the weighted average number of common and common equivalent shares outstanding. Basic earnings per share excludes potential dilution from common equivalent shares, such as those associated with stock-based compensation awards, and is computed by dividing net income allocated to common stockholders by the weighted average number of common shares outstanding for the period. Diluted earnings per share reflects the potential dilution that could occur if securities or other contracts to issue common stock, such as common equivalent shares associated with stock-based compensation awards, were exercised or converted into common stock that would then share in the net earnings of the Corporation. Potential dilution from common equivalent shares is determined using the treasury stock method, reflecting the potential settlement of stock-based compensation awards resulting in the issuance of additional shares of the Corporation’s common stock. Stock-based compensation awards that would have an anti-dilutive effect have been excluded from the determination of earnings per common share. Restricted stock awards and restricted stock units are deemed participating securities by the Corporation, and therefore the Corporation computes earnings per common share using the two-class method. Under the two-class method, distributed and undistributed net 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. Participating securities are excluded from the denominator of both basic and diluted earnings per common share.
Comprehensive Income	Comprehensive Income. Comprehensive income is reported in addition to net income for all periods presented. Comprehensive income is a more inclusive financial reporting methodology that includes disclosure of other comprehensive income (loss) that historically has not been recognized in the calculation of net income. Unrealized gains and losses on the Company’s available-for-sale investment securities are required to be included in other comprehensive income or loss. Total comprehensive income (loss) and the components of accumulated other comprehensive income or loss are presented in the Consolidated Statement of Stockholders’ Equity and Consolidated Statements of Comprehensive Income.
Loss Contingencies	Loss Contingencies. Loss contingencies, including claims and legal action arising in the ordinary course of business, are recorded as liabilities when the likelihood of loss is probable and an amount or range of loss can be reasonably estimated. Management does not believe there now are such matters that will have a material effect on the financial statements.
Fair Value of Financial Instruments	Fair Value of Financial Instruments. Fair values of financial instruments are estimated using relevant market information and other assumptions, as more fully disclosed in a separate note. Fair value is an exit price, representing the amount that would be received to sell an asset or transfer a liability in an orderly transaction between market participants. Fair value estimates involve uncertainties and matters of significant judgment regarding interest rates, credit risk, prepayments, and other factors, especially in the absence of broad markets for particular items. Fair value measures are classified according to a three-tier fair value hierarchy, which is based on the observability of inputs used to measure fair value. GAAP requires the Company to maximize the use of observable inputs when measuring fair value. Changes in assumptions or in market conditions could significantly affect these estimates. Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis Impaired Loans – A loan is considered impaired when it is probable that payment of interest and principal will not be made in accordance with the contractual terms of the loan agreement. Impairment is 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 non-accrual 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. 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 ALLL. The fair value of impaired loans and other real estate owned were determined using Level 3 assumptions, and represents impaired loan and other real estate owned balances for which a specific reserve has been established or on which a write down has been taken. 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 impaired loans and other real estate owned to determine fair value. In determining the net realizable value of the underlying collateral for impaired loans, the Company will then discount the valuation to cover both market price fluctuations and selling costs 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. At December 31, 2019 , substantially all of the Company’s impaired loans were evaluated based on the fair value of their underlying collateral based upon the most recent appraisal available to management. The Company completed partial charge-offs on certain impaired loans individually evaluated for impairment based on recent real estate appraisals and released the related specific reserves during the year ended December 31, 2019 . The Company has recorded no specific reserve on loans deemed impaired at December 31, 2019 . 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. Therefore, for substantially all financial instruments, the fair value estimates presented herein are not necessarily indicative of the amounts the Company could have realized in a sales transaction at December 31, 2019 and 2018 . 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 for certain instruments measured at fair value, as well as the general classification of these instruments pursuant to the valuation hierarchy. Investment securities – Investment securities are generally valued based upon quotes obtained from an independent third-party pricing service, which uses 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. Derivative assets and liabilities – 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. Due to the observable nature of the inputs used in deriving the fair value of these derivative contracts, the valuation of interest rate swaps is classified as Level 2.
Reclassifications	Reclassifications. Some items in prior year financial statements were reclassified to conform to the current presentation. Reclassifications had no effect on prior year net income or stockholders’ equity.
Recent Accounting Pronouncements	Accounting Standards Adopted in 2019 In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) . This Update was issued to increase the transparency and comparability around lease obligations. Previously unrecorded off-balance sheet lease obligations and corresponding rights to use underlying leased assets are now recorded in the consolidated financial statements, accompanied by enhanced qualitative and quantitative disclosures in the notes to the consolidated financial statements. The Update is generally effective for public business entities in fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. In March 2017, the FASB issued ASU 2017-08, Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities . This Update amends guidance on the amortization period of premiums on certain purchased callable debt securities. The amendments shorten the amortization period of premiums on purchased callable debt securities to the earliest call date. This Update should be applied on a modified retrospective basis through a cumulative-effect adjustment to beginning retained earnings. The effective date of ASU 2017-08 is for interim and annual reporting periods beginning after December 15, 2018. The adoption of this standard did not have a material effect on the Company’s operating results or financial condition. In July 2018, the FASB issued ASU 2018-10, Codification Improvements to Topic 842 , Leases and ASU 2018-11, Leases (Topic 842): Targeted Improvements . ASU 2018-10 provides improvements related to ASU 2016-02 to increase stakeholders’ awareness of the amendments to Topic 842 and to expedite the improvements. The amendments affect narrow aspects of the guidance issued in ASU 2016-02. ASU 2018-11 allows entities adopting ASU 2016-02 to choose an additional transition method, under which an entity initially applies the accounting guidance for leases under Topic 842 at the adoption date and recognizes a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. Additionally, ASU 2018-11 allows an entity electing this additional transition method to continue to present comparative period financial statements in accordance with Topic 840 (current U.S. GAAP). ASU 2018-11 also allows lessors to not separate non-lease components from the associated lease component if certain conditions are met. The amendments in these updates became effective for annual periods as well as interim periods within those annual periods beginning after December 15, 2018. The Company elected to apply the transition provisions of Topic 842 using the alternative transition method whereby comparative periods are not restated. The Company also elected to adopt the “package” of practical expedients in its transition to Topic 842, as specified in Accounting Standard Codification (“ASC”) 842-10-65. The results of this policy election are that the Company reflected the provisions of Topic 842 in its consolidated financial statements for the first time as of and for the period ended March 31, 2019 (the period of adoption). The Company measured and recorded liabilities to make lease payments as well as right-of-use assets in the period of adoption for leases that existed as of the transition date, and will continue to present all comparative periods under Topic 840. Under this elected transition method, the Company is not required to reassess the following as part of its transition to Topic 842: (1) whether any expired or existing contracts contain leases, (2) lease classifications for any existing or expired leases and (3) initial direct costs for any existing leases. Additionally, the Company elected to apply the use of hindsight in its assessment of the term for its leases upon transition, which allows for consideration of the Company’s option to extend or terminate a lease. The Company adopted the provisions of Topic 842 on January 1, 2019, and in its transition to Topic 842, the Company initially recorded a liability to make future lease payments of approximately $45.7 million and right-of-use assets of $43.8 million . The difference of $ 1.9 million represents the accounting adjustments previously recorded under Topic 840 and Topic 805, as required by transition guidance in ASC 842-10-65. The Company was not required to record a cumulative effect adjustment to retained earnings as part of its transition to Topic 842. The Company’s evaluation of lease obligations and service agreements under the new standard included an assessment of the appropriate classification and related accounting of each lease agreement, a review of applicability of the new standard to existing service agreements and gathering all essential lease data to facilitate the application of the new standard. The Company’s review indicated that all of its leases are classified as operating leases or short-term leases. In accordance with the provisions of Topic 842, liabilities to make future lease payments and right-of-use are only recorded for leases that are not considered short-term (leases with an original term of greater than 12 months). The Company records expense for its leases on a straight-line basis in accordance with the requirements under Topic 842 for operating leases. The Company’s expense recognition for its operating leases (including short-term leases) under Topic 842 has not differed significantly from that recorded under Topic 840. Right-of-use assets for operating leases are amortized over the lease term, and liabilities to make lease payments are accounted for using the interest method, both in accordance with Topic 842. Please also refer to Note 23 - Leases, for additional information related to the Company’s leases. Recent Accounting Guidance Not Yet Effective In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments . This Update replaces the incurred loss impairment model in current U.S. GAAP with a model that reflects current expected credit losses (“CECL”). The CECL model is applicable to the measurement of credit losses on financial assets measured at amortized cost, including loan receivables and held-to-maturity debt securities. CECL also requires credit losses on available-for-sale debt securities be measured through an allowance for credit losses when the fair value is less than the amortized cost basis. It also applies to off-balance sheet credit exposures. The Update requires that all expected credit losses for financial assets held at the reporting date be measured based on historical experience, current conditions and reasonable and supportable forecasts. The Update also requires enhanced disclosure, including qualitative and quantitative disclosures that provide additional information about significant estimates and judgments used in estimating credit losses. For SEC filers that are not smaller reporting companies, such as the Company, the Update is effective for annual periods beginning after December 15, 2019 and interim periods within those annual periods. In April 2019, the FASB issued ASU 2019-04, Codification Improvements to Topic 326, Financial Instruments - Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments . This Update was issued as part of an ongoing project on the FASB’s agenda for improving the Codification or correcting for its unintended application, which is specific to Updates: 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities, and 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities . The effective date for the amendments will be the same as the effective date in ASU 2016-13. The Company is currently evaluating the effects of this Update on its financial statements and disclosures. The Company has developed a new expected credit loss estimation model in accordance with ASU 2016-13. The Company’s CECL Committee and related sub-committees and working groups, which collectively are comprised of senior management and staff members from our finance, credit, lending, internal audit, risk management and IT departments have substantially completed cross-functional implementation activities. These activities focused on data capture, model development portfolio segmentation, policies, documentation and disclosure, validation and internal controls. As a result, we have completed our primary CECL model, and are working to refine the remaining facets of the model, which relate to qualitative adjustments. Additionally, the Company has designed controls over the process for estimating expected future credit losses, and is currently working to finalize testing of those controls. We have also completed a validation of our primary CECL model and the documentation review of our end-to-end processes during the fourth quarter of 2019. The Company has completed numerous iterations of model output utilizing data from interim periods starting with the fourth quarter of 2018, as part of the process to test and refine our model. Depending on the nature of each identified pool of financial assets with similar risk characteristics, the Company is implementing a probability of default (“PD”) and loss given default (“LGD”) discounted cash flow methodology for its commercial based loans and a historical loss-rate methodology for its retail or consumer based loans to estimate expected future credit losses. Additionally, the Company is incorporating reasonable and supportable economic forecasts into the estimate of expected future credit losses which require significant judgment, such as selecting forecast scenarios and related scenario-weighting, as well as determining the appropriate length of the forecast horizon. Management intends to leverage 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 duration of the forecast horizon, the reversion period and 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 portfolio of financial assets. The provisions of ASU 2016-13 became effective for the Company on January 1, 2020. Based on our loan portfolio at December 31, 2019 and management’s current expectation of future economic conditions, and certain qualitative adjustments, which we are currently working to refine, the Company believes its cumulative effect adjustment, resulting from the adoption of the new standard, will result in a pre-tax increase in the allowance for credit losses by an amount within a range of $50 million and $60 million . As mentioned, the Company is currently in the process of refining the remaining facets of its CECL model relating to qualitative adjustments, as well as completing the testing of internal controls over the CECL model, and as such, there is no assurance the cumulative effect adjustment to the allowance for credit losses and retained earnings will be within the foregoing range. The Company currently estimates the increase in the allowance for credit losses for loans is attributable primarily to the allocation of an allowance on acquired loans based on the methodology discussed above and secondarily to the incorporation of reasonable and supportable economic forecasts into the estimate of expected future credit losses to our commercial real estate and commercial owner-occupied loan portfolios, which have commercial real estate as the primary collateral source and longer contractual maturities relative to our loan portfolio as a whole. The ACL for held-to-maturity and available-for-sale investment securities upon the adoption of ASU 2016-13 is not material. In February 2019, the U.S. federal bank regulatory agencies approved a final rule modifying their regulatory capital rules and providing an option to phase in over a three-year period the day-one regulatory capital effects of ASU 2016-13. The Company is currently evaluating the day-one regulatory capital effects and phase-in option upon the adoption of ASU 2016-13. In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement . The amendments in this Update modify the disclosure requirements on fair value measurements in Topic 820, Fair Value Measurement . The following disclosure requirements for public companies were removed from Topic 820: • The amount of and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy • The policy for timing of transfers between levels • The valuation processes for Level 3 fair value measurements The amendments clarify that the measurement uncertainty disclosure is to communicate information about the uncertainty in measurement as of the reporting date. The following disclosure requirements for public companies were added to Topic 820: • The changes in unrealized gains and losses for the period included in other comprehensive income for recurring Level 3 fair value measurements held at the end of the reporting period • The range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements. For certain unobservable inputs, an entity may disclose other quantitative information (such as the median or arithmetic average) in lieu of the weighted average if the entity determines that other quantitative information would be a more reasonable and rational method to reflect the distribution of unobservable inputs used to develop Level 3 fair value measurements The amendments in this Update are effective for public business entities for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years. Early adoption is permitted. In addition, an entity may early adopt any of the removed or modified disclosures immediately and delay adoption of the new disclosures until the effective date. The Company is currently evaluating the effects of ASU 2018-13 on its financial statements and disclosures. In March 2019, the FASB issued ASU 2019-01, Leases (Topic 842): Codification Improvements . This Update provides clarification on certain aspects of an entity’s implementation of Topic 842 including those that relate to: (1) Determining the fair value of the underlying asset by lessors that are not manufacturers or dealers. The amendments related to this item carry forward from Topic 840 to Topic 842 an exception that allows lessors who are not manufacturers or dealers to use the cost of the underlying asset as its fair value. (2) Presentation on the statement of cash flows - sales-type and direct financing leases. The amendments related to this item clarify that all principal payments received on leases by lessors in sales-type or direct financing lease transactions should be reflected in investing activities for entities such as depository and lending institutions within in the scope of Topic 942. (3) Transition disclosures related to Topic 250, Accounting Changes and Error Corrections. The amendments related to this item clarify the FASB’s original intent by explicitly providing an exception to the paragraph 250-10-50-3 interim disclosure requirements in the Topic 842 transition disclosure requirements, which would otherwise require interim disclosures after the date of adoption of Topic 842 related to the impacts of the change on: (a) income from continuing operations, (b) net income, (c) any other financial statement line item and (d) any affected per-share amounts. The amendments in this Update are effective for public business entities for fiscal years beginning after December 15, 2019, and interim periods within fiscal years beginning after December 15, 2020. Early adoption is permitted. The Company does not believe the effects of this ASU will have a material effect on the Company’s 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 incremental approach for intra-period tax allocation 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 (or similar tax) that is partially based on income as an income-based tax and account for any incremental amount incurred 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 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 income taxes related to employee stock ownership plans and investments in qualified affordable housing projects accounted for using the equity method. For public business entities, the Update is effective for annual periods beginning after December 15, 2020 and interim periods within those annual periods. Early adoption is permitted. The Company is evaluating the impact of this Update on its consolidated financial statements.

Regulatory Capital Requiremen_2

Regulatory Capital Requirements and Other Regulatory Matters (Tables)	12 Months Ended
	Dec. 31, 2019
Banking and Thrift [Abstract]
Schedule of Company's and Bank's actual capital amounts and ratios	As defined in applicable regulations and set forth in the table below, the Corporation and the Bank continue to exceed the regulatory capital minimum requirements and the Bank continues to exceed the “well capitalized” standards and the required conservation buffer at the dates indicated: Actual Minimum Required for Capital Adequacy Purposes Minimum Required Plus Capital Conservation Buffer (1) Required to be Well Capitalized Under Prompt Corrective Action Regulations Amount Ratio Amount Ratio Amount Ratio Amount Ratio (dollars in thousands) December 31, 2019 Pacific Premier Bancorp, Inc. Consolidated Tier 1 Leverage Ratio $ 1,123,740 10.54 % $ 426,597 4.00 % 426,597 4.00 % N/A N/A Common Equity Tier 1 Capital Ratio 1,116,185 11.35 % 442,612 4.50 % 688,508 7.00 % N/A N/A Tier 1 Capital to Ratio 1,123,740 11.42 % 590,149 6.00 % 836,045 8.50 % N/A N/A Total Capital Ratio 1,357,904 13.81 % 786,866 8.00 % 1,032,762 10.50 % N/A N/A Pacific Premier Bank Tier 1 Leverage Ratio $ 1,321,494 12.39 % $ 426,592 4.00 % 426,592 4.00 % $ 533,240 5.00 % Common Equity Tier 1 Capital Ratio 1,321,494 13.43 % 442,704 4.50 % 688,650 7.00 % 639,461 6.50 % Tier 1 Capital to Ratio 1,321,494 13.43 % 590,272 6.00 % 836,218 8.50 % 787,029 8.00 % Total Capital Ratio 1,360,471 13.83 % 787,029 8.00 % 1,032,975 10.50 % 983,786 10.00 % December 31, 2018 Pacific Premier Bancorp, Inc. Consolidated Tier 1 Leverage Ratio $ 1,112,132 10.38 % $ 428,751 4.00 % 428,751 4.00 % N/A N/A Common Equity Tier 1 Capital Ratio 1,087,164 10.88 % 449,505 4.50 % 699,230 7.00 % N/A N/A Tier 1 Capital to Ratio 1,112,132 11.13 % 599,340 6.00 % 849,065 8.50 % N/A N/A Total Capital Ratio 1,237,315 12.39 % 799,120 8.00 % 1,048,845 10.50 % N/A N/A Pacific Premier Bank Tier 1 Leverage Ratio $ 1,185,544 11.06 % $ 428,703 4.00 % 428,703 4.00 % $ 535,879 5.00 % Common Equity Tier 1 Capital Ratio 1,185,544 11.87 % 449,481 4.50 % 699,193 7.00 % 649,251 6.50 % Tier 1 Capital to Ratio 1,185,544 11.87 % 599,308 6.00 % 849,020 8.50 % 799,078 8.00 % Total Capital Ratio 1,226,258 12.28 % 799,078 8.00 % 1,048,790 10.50 % 998,847 10.00 % (1) For comparative purpose, fully phased-in capital conservation buffer is presented as of December 31, 2019 and 2018.

Investment Securities (Tables)

Investment Securities (Tables)	12 Months Ended
	Dec. 31, 2019
Investments, Debt and Equity Securities [Abstract]
Schedule of amortized cost and estimated fair value of securities	The amortized cost and estimated fair value of investment securities were as follows: December 31, 2019 Amortized Cost Gross Unrealized Gain Gross Unrealized Loss Estimated Fair Value (dollars in thousands) Investment securities available-for-sale: U.S. Treasury $ 60,457 $ 3,137 $ (39 ) $ 63,555 Agency 240,348 7,686 (1,676 ) 246,358 Corporate debt 149,150 2,217 (14 ) 151,353 Municipal bonds 384,032 13,450 (184 ) 397,298 Collateralized mortgage obligation: residential 9,869 123 (8 ) 9,984 Mortgage-backed securities: residential 494,404 7,603 (2,171 ) 499,836 Total investment securities available-for-sale 1,338,260 34,216 (4,092 ) 1,368,384 Investment securities held-to-maturity: Mortgage-backed securities: residential 36,114 922 — 37,036 Other 1,724 — — 1,724 Total investment securities held-to-maturity 37,838 922 — 38,760 Total investment securities $ 1,376,098 $ 35,138 $ (4,092 ) $ 1,407,144 December 31, 2018 Amortized Cost Gross Unrealized Gain Gross Unrealized Loss Estimated Fair Value (dollars in thousands) Investment securities available-for-sale: U.S. Treasury $ 59,688 $ 1,224 $ — $ 60,912 Agency 128,958 1,631 (519 ) 130,070 Corporate debt 104,158 291 (906 ) 103,543 Municipal bonds 238,914 1,941 (2,225 ) 238,630 Collateralized mortgage obligation: residential 24,699 64 (425 ) 24,338 Mortgage-backed securities: residential 554,751 1,112 (10,134 ) 545,729 Total investment securities available-for-sale 1,111,168 6,263 (14,209 ) 1,103,222 Investment securities held-to-maturity: Mortgage-backed securities: residential 43,381 148 (686 ) 42,843 Other 1,829 — — 1,829 Total investment securities held-to-maturity 45,210 148 (686 ) 44,672 Total investment securities $ 1,156,378 $ 6,411 $ (14,895 ) $ 1,147,894
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 unrealized loss position. December 31, 2019 Less than 12 months 12 months or Longer Total Number Fair Value Gross Unrealized Losses Number Fair Value Gross Unrealized Losses Number Fair Value Gross Unrealized Losses (dollars in thousands) Investment securities available-for-sale: U.S. Treasury 1 $ 10,194 $ (39 ) — $ — $ — 1 $ 10,194 $ (39 ) Agency 13 102,874 (1,340 ) 9 13,514 (336 ) 22 116,388 (1,676 ) Corporate debt 1 1,017 (14 ) — — — 1 1,017 (14 ) Municipal bonds 12 30,541 (184 ) — — — 12 30,541 (184 ) Collateralized mortgage obligation: residential — — — 1 603 (8 ) 1 603 (8 ) Mortgage-backed securities: residential 18 130,014 (1,681 ) 11 26,886 (490 ) 29 156,900 (2,171 ) Total investment securities available-for-sale 45 274,640 (3,258 ) 21 41,003 (834 ) 66 315,643 (4,092 ) Investment securities held-to-maturity: Mortgage-backed securities: residential — — — — — — — — — Other — — — — — — — — — Total investment securities held-to-maturity — — — — — — — — — Total investment securities 45 $ 274,640 $ (3,258 ) 21 $ 41,003 $ (834 ) 66 $ 315,643 $ (4,092 ) December 31, 2018 Less than 12 months 12 months or Longer Total Number Fair Value Gross Unrealized Losses Number Fair Value Gross Unrealized Losses Number Fair Value Gross Unrealized Losses (dollars in thousands) Investment securities available-for-sale: U.S. Treasury — $ — $ — — $ — $ — — $ — $ — Agency 15 $ 26,229 $ (333 ) 6 $ 10,434 $ (186 ) 21 $ 36,663 $ (519 ) Corporate debt 9 47,805 (471 ) 8 19,369 (435 ) 17 67,174 (906 ) Municipal bonds 60 45,083 (369 ) 102 69,693 (1,856 ) 162 114,776 (2,225 ) Collateralized mortgage obligation: residential 1 814 (1 ) 8 18,104 (424 ) 9 18,918 (425 ) Mortgage-backed securities: residential 20 70,839 (435 ) 120 324,864 (9,699 ) 140 395,703 (10,134 ) Total available-for-sale 105 190,770 (1,609 ) 244 442,464 (12,600 ) 349 633,234 (14,209 ) Investment securities held-to-maturity: Mortgage-backed securities: residential 3 11,256 (81 ) 3 15,741 (605 ) 6 26,997 (686 ) Other — — — — — — — — — Total held-to-maturity 3 11,256 (81 ) 3 15,741 (605 ) 6 26,997 (686 ) Total securities 108 $ 202,026 $ (1,690 ) 247 $ 458,205 $ (13,205 ) 355 $ 660,231 $ (14,895 )
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 available-for-sale at December 31, 2019 , 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 Cost Fair Value Amortized Cost Fair Value Amortized Cost Fair Value Amortized Cost Fair Value Amortized Cost Fair Value (dollars in thousands) Investment securities available-for-sale: Treasury $ 499 $ 500 $ 20,163 $ 20,586 $ 39,795 $ 42,469 $ — $ — $ 60,457 $ 63,555 Agency 1,000 1,014 40,647 42,162 166,244 169,070 32,457 34,112 240,348 246,358 Corporate — — — — 135,407 137,518 13,743 13,835 149,150 151,353 Municipal bonds — — 1,842 1,952 26,024 26,996 356,166 368,350 384,032 397,298 Collateralized mortgage obligation: residential — — — — 610 603 9,259 9,381 9,869 9,984 Mortgage-backed securities: residential — — 2,258 2,352 193,771 195,933 298,375 301,551 494,404 499,836 Total investment securities available-for-sale 1,499 1,514 64,910 67,052 561,851 572,589 710,000 727,229 1,338,260 1,368,384 Investment securities held-to-maturity: Mortgage-backed securities: residential — — 908 942 — — 35,206 36,094 36,114 37,036 Other — — — — — — 1,724 1,724 1,724 1,724 Total investment securities held-to-maturity — — 908 942 — — 36,930 37,818 37,838 38,760 Total investment securities $ 1,499 $ 1,514 $ 65,818 $ 67,994 $ 561,851 $ 572,589 $ 746,930 $ 765,047 $ 1,376,098 $ 1,407,144

Loans (Tables)

Loans (Tables)	12 Months Ended
	Dec. 31, 2019
Receivables [Abstract]
Schedule of components of loans held for investment	The following table presents the composition of the loan portfolio as of the dates indicated: December 31, 2019 2018 (dollars in thousands) Business loans: Commercial and industrial $ 1,265,185 $ 1,364,423 Franchise 916,875 765,416 Commercial owner occupied (1) 1,674,092 1,679,122 SBA 175,815 193,882 Agribusiness 127,834 138,519 Total business loans 4,159,801 4,141,362 Real estate loans: Commercial non-owner occupied 2,072,374 2,003,174 Multi-family 1,576,870 1,535,289 One-to-four family (2) 254,779 356,264 Construction 410,065 523,643 Farmland 175,997 150,502 Land 31,090 46,628 Total real estate loans 4,521,175 4,615,500 Consumer loans: Consumer loans 50,922 89,424 Gross loans held for investment (3) 8,731,898 8,846,286 Deferred loan origination fees and discounts, net (9,587 ) (9,468 ) Loans held for investment 8,722,311 8,836,818 Allowance for loan losses (35,698 ) (36,072 ) Loans held for investment, net $ 8,686,613 $ 8,800,746 Loans held for sale, at lower of cost or fair value $ 1,672 $ 5,719 ______________________________ (1) Secured by real estate. (2) Includes second trust deeds. (3) Total gross loans held for investment for December 31, 2019 and December 31, 2018 net of the unaccreted fair value net purchase discounts of $40.7 million and $61.0 million , respectively.
Summary of loan portfolio by the Company's internal risk grading system	The following tables stratify the loan portfolio by the Company’s internal risk rating, including loans held for sale, as of the periods indicated: Credit Risk Grades Pass Special Mention Substandard Doubtful Total Gross Loans December 31, 2019 (dollars in thousands) Business loans Commercial and industrial $ 1,236,073 $ 13,226 $ 15,886 $ — $ 1,265,185 Franchise 898,191 7,851 10,833 — 916,875 Commercial owner occupied 1,659,391 11,167 3,534 — 1,674,092 SBA 166,011 3,255 8,221 — 177,487 Agribusiness 123,338 — 4,496 — 127,834 Real estate loans Commercial non-owner occupied 2,070,068 1,178 1,128 — 2,072,374 Multi-family 1,576,654 — 216 — 1,576,870 One-to-four family 254,218 — 561 — 254,779 Construction 410,065 — — — 410,065 Farmland 175,997 — — — 175,997 Land 31,073 — 17 — 31,090 Consumer loans Consumer loans 50,868 — 54 — 50,922 Totals $ 8,651,947 $ 36,677 $ 44,946 $ — $ 8,733,570 Credit Risk Grades Pass Special Mention Substandard Doubtful Total Gross Loans December 31, 2018 (dollars in thousands) Business loans Commercial and industrial $ 1,340,322 $ 12,005 $ 12,134 $ — $ 1,364,461 Franchise 760,795 4,431 190 — 765,416 Commercial owner occupied 1,660,994 1,580 16,548 — 1,679,122 SBA 189,006 2,289 6,906 — 198,201 Warehouse facilities 125,355 — 13,164 — 138,519 Real estate loans Commercial non-owner occupied 1,998,118 731 5,687 — 2,004,536 Multi-family 1,530,567 4,060 662 — 1,535,289 One-to-four family 350,083 728 5,453 — 356,264 Construction 523,643 — — — 523,643 Farmland 150,381 — 121 — 150,502 Land 46,008 132 488 — 46,628 Consumer loans Consumer loans 89,321 — 103 — 89,424 Totals $ 8,764,593 $ 25,956 $ 61,456 $ — $ 8,852,005
Schedule of credit quality of the loan portfolio	The following tables present the aging of loan portfolio, including loans held for sale, by type of loans as of the periods indicated: Days Past Due Current 30-59 60-89 90+ Total Gross Loans Non-accruing December 31, 2019 (dollars in thousands) Business loans Commercial and industrial $ 1,260,940 $ 422 $ 826 $ 2,997 $ 1,265,185 $ 4,637 Franchise 907,733 — 9,142 — 916,875 — Commercial owner occupied 1,673,761 331 — — 1,674,092 — SBA 174,271 169 613 2,434 177,487 2,519 Agribusiness 127,834 — — — 127,834 — Real estate loans Commercial non-owner occupied 2,070,067 1,179 — 1,128 2,072,374 1,128 Multi-family 1,576,870 — — — 1,576,870 — One-to-four family 254,779 — — — 254,779 366 Construction 410,065 — — — 410,065 — Farmland 175,997 — — — 175,997 — Land 31,090 — — — 31,090 — Consumer loans Consumer loans 50,914 5 2 1 50,922 — Totals $ 8,714,321 $ 2,106 $ 10,583 $ 6,560 $ 8,733,570 $ 8,650 Days Past Due Current 30-59 60-89 90+ Total Gross Loans Non-accruing December 31, 2018 (dollars in thousands) Business loans Commercial and industrial $ 1,362,017 $ 309 $ 1,204 $ 931 $ 1,364,461 $ 931 Franchise 759,546 5,680 — 190 765,416 190 Commercial owner occupied 1,677,967 343 — 812 1,679,122 599 SBA 195,051 524 — 2,626 198,201 2,739 Warehouse facilities 138,519 — — — 138,519 — Real estate loans Commercial non-owner occupied 2,004,536 — — — 2,004,536 — Multi-family 1,535,275 14 — — 1,535,289 — One-to-four family 356,219 30 9 6 356,264 398 Construction 523,643 — — — 523,643 — Farmland 150,502 — — — 150,502 — Land 46,628 — — — 46,628 — Consumer loans Consumer loans 89,249 146 29 — 89,424 — Totals $ 8,839,152 $ 7,046 $ 1,242 $ 4,565 $ 8,852,005 $ 4,857
Summary of Company's investment in impaired loans	The following tables provide a summary of the Company’s investment in impaired loans as of and for the periods indicated: Recorded Investment Unpaid Principal Balance With Specific Allowance Without Specific Allowance Specific Allowance for Impaired Loans Average Recorded Investment Interest Income Recognized (dollars in thousands) December 31, 2019 Business loans Commercial and industrial $ 7,529 $ 7,755 $ — $ 7,529 $ — $ 3,649 $ 22 Franchise 10,834 10,835 — 10,834 — 3,079 151 Commercial owner occupied — — — — — 683 — SBA 3,132 4,070 — 3,132 — 2,996 16 Agribusiness — — — — — 6,602 363 Real estate loans Commercial non-owner occupied 1,128 1,184 — 1,128 — 411 — One-to-four family 366 412 — 366 — 379 — Land — — — — — 120 — Consumer loans Consumer — — — — — 19 — Totals $ 22,989 $ 24,256 $ — $ 22,989 $ — $ 17,938 $ 552 December 31, 2018 Business loans Commercial and industrial $ 1,023 $ 1,071 $ 550 $ 473 $ 118 $ 1,173 $ 1 Franchise 189 190 — 189 — 119 — Commercial owner occupied 599 628 — 599 — 1,549 — SBA 2,739 7,598 488 2,251 466 1,814 — Agribusiness 7,500 7,500 — 7,500 — 625 35 Real estate loans Commercial non-owner occupied — — — — — 538 — Multi-family — — — — — 500 — One-to-four family 408 453 — 408 — 1,206 — Land — — — — — 5 — Consumer loans Consumer — — — — — 33 — Totals $ 12,458 $ 17,440 $ 1,038 $ 11,420 $ 584 $ 7,562 $ 36 December 31, 2017 Business loans Commercial and industrial $ 1,160 $ 1,585 $ — $ 1,160 $ — $ 441 $ — Commercial owner occupied 97 98 97 — 55 153 — SBA 1,201 4,329 — 1,201 — 434 — Real estate loans Commercial non-owner occupied — — — — — 86 — One-to-four family 817 849 — 817 — 166 — Construction — — — — — 1,017 — Land 9 35 — 9 — 12 — Totals $ 3,284 $ 6,896 $ 97 $ 3,187 $ 55 $ 2,309 $ —

Allowance for Loan Losses (Tabl

Allowance for Loan Losses (Tables)	12 Months Ended
	Dec. 31, 2019
Provision for Loan and Lease Losses [Abstract]
Summary of allocation of the allowance as well as the activity in the allowance attributed to various segments in the loan portfolio	The following tables summarize the allocation of the ALLL as well as the activity in the ALLL attributed to various segments in the loan portfolio as of and for the periods indicated: Commercial and Industrial Franchise Commercial Owner Occupied SBA Agribusiness Commercial Non-owner Occupied Multi-family One-to-four Family Construction Farmland Land Consumer Loans Total (dollars in thousands) Balance, December 31, 2018 $ 10,821 $ 6,500 $ 1,386 $ 4,288 $ 3,283 $ 1,604 $ 725 $ 805 $ 5,166 $ 503 $ 772 $ 219 $ 36,072 Charge-offs (2,318 ) (2,531 ) (125 ) (2,238 ) — (625 ) — — — — — (16 ) (7,853 ) Recoveries 189 18 46 78 — — — 2 — — — 11 344 Provisions for (reduction in) loan losses 2,642 2,421 616 2,351 (760 ) 920 4 (152 ) (1,357 ) 355 (97 ) 192 7,135 Balance, December 31, 2019 $ 11,334 $ 6,408 $ 1,923 $ 4,479 $ 2,523 $ 1,899 $ 729 $ 655 $ 3,809 $ 858 $ 675 $ 406 $ 35,698 Amount of allowance attributed to: Specifically evaluated impaired loans $ — $ — $ — $ — $ — $ — $ — $ — $ — $ — $ — $ — $ — General portfolio allocation 11,334 6,408 1,923 4,479 2,523 1,899 729 655 3,809 858 675 406 35,698 Loans individually evaluated for impairment 7,529 10,834 — 3,132 — 1,128 — 366 — — — — 22,989 Specific reserves to total loans individually evaluated for impairment — % — % — % — % — % — % — % — % — % — % — % — % — % Loans collectively evaluated for impairment $ 1,257,656 $ 906,041 $ 1,674,092 $ 172,683 $ 127,834 $ 2,071,246 $ 1,576,870 $ 254,413 $ 410,065 $ 175,997 $ 31,090 $ 50,922 $ 8,708,909 General reserves to total loans collectively evaluated for impairment 0.90 % 0.71 % 0.11 % 2.59 % 1.97 % 0.09 % 0.05 % 0.26 % 0.93 % 0.49 % 2.17 % 0.80 % 0.41 % Total gross loans $ 1,265,185 $ 916,875 $ 1,674,092 $ 175,815 $ 127,834 $ 2,072,374 $ 1,576,870 $ 254,779 $ 410,065 $ 175,997 $ 31,090 $ 50,922 $ 8,731,898 Total allowance to gross loans 0.90 % 0.70 % 0.11 % 2.55 % 1.97 % 0.09 % 0.05 % 0.26 % 0.93 % 0.49 % 2.17 % 0.80 % 0.41 % Commercial and Industrial Franchise Commercial Owner Occupied SBA Agribusiness Commercial Non-owner Occupied Multi-family One-to-four Family Construction Farmland Land Consumer Loans Total (dollars in thousands) Balance, December 31, 2017 $ 9,721 $ 5,797 $ 767 $ 2,890 $ 1,291 $ 1,266 $ 607 $ 803 $ 4,569 $ 137 $ 993 $ 95 $ 28,936 Charge-offs (1,411 ) — (33 ) (102 ) — — — — — — — (409 ) (1,955 ) Recoveries 698 — 47 169 — — — 13 — — — 8 935 Provisions for (reduction in) loan losses 1,813 703 605 1,331 1,992 338 118 (11 ) 597 366 (221 ) 525 8,156 Balance, December 31, 2018 $ 10,821 $ 6,500 $ 1,386 $ 4,288 $ 3,283 $ 1,604 $ 725 $ 805 $ 5,166 $ 503 $ 772 $ 219 $ 36,072 Amount of allowance attributed to: Specifically evaluated impaired loans $ 118 $ — $ — $ 466 $ — $ — $ — $ — $ — $ — $ — $ — $ 584 General portfolio allocation 10,703 6,500 1,386 3,822 3,283 1,604 725 805 5,166 503 772 219 35,488 Loans individually evaluated for impairment 1,023 189 599 2,739 7,500 — — 408 — — — — 12,458 Specific reserves to total loans individually evaluated for impairment 11.53 % — % — % 17.01 % — % — % — % — % — % — % — % — % 4.69 % Loans collectively evaluated for impairment $ 1,363,400 $ 765,227 $ 1,678,523 $ 191,143 $ 131,019 $ 2,003,174 $ 1,535,289 $ 355,856 $ 523,643 $ 150,502 $ 46,628 $ 89,424 $ 8,833,828 General reserves to total loans collectively evaluated for impairment 0.79 % 0.85 % 0.08 % 2.00 % 2.51 % 0.08 % 0.05 % 0.23 % 0.99 % 0.33 % 1.66 % 0.24 % 0.40 % Total gross loans $ 1,364,423 $ 765,416 $ 1,679,122 $ 193,882 $ 138,519 $ 2,003,174 $ 1,535,289 $ 356,264 $ 523,643 $ 150,502 $ 46,628 $ 89,424 $ 8,846,286 Total allowance to gross loans 0.79 % 0.85 % 0.08 % 2.21 % 2.37 % 0.08 % 0.05 % 0.23 % 0.99 % 0.33 % 1.66 % 0.24 % 0.41 % Commercial Franchise Commercial SBA Agribusiness Commercial Multi-family One-to-four Construction Farmland Land Consumer Loans Total Balance, December 31, 2016 $ 6,362 $ 3,845 $ 1,193 $ 1,039 $ — $ 1,715 $ 2,927 $ 365 $ 3,632 $ — $ 198 $ 20 $ 21,296 Charge-offs (1,344 ) — — (8 ) — — — (10 ) — — — — (1,362 ) Recoveries 94 — 105 127 — — — 35 — — — 1 362 Provisions for (reduction in) loan losses 4,609 1,952 (531 ) 1,732 1,291 (449 ) (2,320 ) 413 937 137 795 74 8,640 Balance, December 31, 2017 $ 9,721 $ 5,797 $ 767 $ 2,890 $ 1,291 $ 1,266 $ 607 $ 803 $ 4,569 $ 137 $ 993 $ 95 $ 28,936 Amount of allowance attributed to: Specifically evaluated impaired loans $ — $ — $ 55 $ — $ — $ — $ — $ — $ — $ — $ — $ — $ 55 General portfolio allocation 9,721 5,797 712 2,890 1,291 1,266 607 803 4,569 137 993 95 28,881 Loans individually evaluated for impairment 1,160 — 97 1,201 — — — 817 — — 9 — 3,284 Specific reserves to total loans individually evaluated for impairment — % — % 56.70 % — % — % — % — % — % — % — % — % — % 1.67 % Loans collectively evaluated for impairment $ 1,085,499 $ 660,414 $ 1,289,116 $ 184,313 $ 116,066 $ 1,243,115 $ 794,384 $ 270,077 $ 282,811 $ 145,393 $ 31,224 $ 92,931 $ 6,195,343 General reserves to total loans collectively evaluated for impairment 0.90 % 0.88 % 0.06 % 1.57 % 1.11 % 0.10 % 0.08 % 0.30 % 1.62 % 0.09 % 3.18 % 0.10 % 0.47 % Total gross loans $ 1,086,659 $ 660,414 $ 1,289,213 $ 185,514 $ 116,066 $ 1,243,115 $ 794,384 $ 270,894 $ 282,811 $ 145,393 $ 31,233 $ 92,931 $ 6,198,627 Total allowance to gross loans 0.89 % 0.88 % 0.06 % 1.56 % 1.11 % 0.10 % 0.08 % 0.30 % 1.62 % 0.09 % 3.18 % 0.10 % 0.47 %

Other Real Estate Owned (Tables

Other Real Estate Owned (Tables)	12 Months Ended
	Dec. 31, 2019
Other Real Estate [Abstract]
Summary of the activity in the other real estate owned	The following summarizes the activity in other real estate owned for the years ended December 31: 2019 2018 2017 (dollars in thousands) Balance, beginning of year $ 147 $ 326 $ 460 Additions: Acquisitions — 524 326 Foreclosures 644 15 — Sales (329 ) (1,055 ) (507 ) Gain (loss) on sale (20 ) 346 47 Write downs (1 ) (9 ) — Balance, end of year $ 441 $ 147 $ 326

Premises and Equipment (Tables)

Premises and Equipment (Tables)	12 Months Ended
	Dec. 31, 2019
Property, Plant and Equipment [Abstract]
Schedule of components of premises and equipment	The Company’s premises and equipment consisted of the following at December 31: 2019 2018 (dollars in thousands) Land $ 13,820 $ 18,902 Premises 16,697 25,361 Leasehold improvements 25,884 15,824 Furniture, fixtures and equipment 33,871 28,994 Automobiles 173 173 Subtotal 90,445 89,254 Less: accumulated depreciation 31,444 24,563 Total $ 59,001 $ 64,691

Goodwill and Core Deposit Int_2

Goodwill and Core Deposit Intangibles (Tables)	12 Months Ended
	Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	The following table presents changes in the carrying value of goodwill for the periods indicated: 2019 2018 2017 (dollars in thousands) Balance, beginning of year $ 808,726 $ 493,329 $ 102,490 Goodwill acquired during the year — 313,043 390,839 Purchase accounting adjustments (404 ) 2,354 — Impairment losses — — — Balance, end of year $ 808,322 $ 808,726 $ 493,329 Accumulated impairment losses at end of year $ — $ — $ —
Schedule of Finite-Lived Intangible Assets	The Company’s change in the gross balance of core deposit intangibles and the related accumulated amortization consisted of the following for the periods indicated: 2019 2018 2017 (dollars in thousands) Gross Balance of CDI: Balance, beginning of year $ 125,945 $ 54,809 $ 15,102 Additions due to acquisitions — 71,136 39,707 Balance, end of year 125,945 125,945 54,809 Accumulated amortization: Balance, beginning of year (25,389 ) (11,795 ) (5,651 ) Amortization (17,244 ) (13,594 ) (6,144 ) Balance, end of year (42,633 ) (25,389 ) (11,795 ) Net CDI, end of year $ 83,312 $ 100,556 $ 43,014

Qualified Affordable Housing _2

Qualified Affordable Housing Project Investments (Tables)	12 Months Ended
	Dec. 31, 2019
Equity Method Investments and Joint Ventures [Abstract]
Investment in LIHTC Projects	As of December 31, 2019 , the Company’s unfunded affordable housing commitments were estimated to be paid as follows: Amount Year Ending December 31, (dollars in thousands) 2020 $ 9,776 2021 6,596 2022 3,806 2023 187 2024 182 Thereafter 867 Total unfunded commitments $ 21,414 The following table presents tax credits and other tax benefits generated by operating losses from qualified affordable housing projects as well as amortization expense associated with these investments for the years ended December 31, 2019 , 2018 and 2017 . 2019 2018 2017 (dollars in thousands) Tax credit and other tax benefits recognized $ 6,506 $ 4,748 $ 1,719 Amortization of investments 5,527 4,574 1,599

Deposit Accounts (Tables)

Deposit Accounts (Tables)	12 Months Ended
	Dec. 31, 2019
Deposits [Abstract]
Schedule of components of deposit accounts and weighted average interest rates	Deposit accounts and weighted average interest rates consisted of the following at December 31: 2019 2018 Amount Weighted Amount Weighted (dollars in thousands) Noninterest-bearing checking $ 3,857,660 — % $ 3,495,737 — % Interest-bearing checking 586,019 0.43 % 526,088 0.38 % Money market 3,171,164 0.83 % 2,975,578 0.89 % Savings 235,824 0.16 % 250,271 0.14 % Certificates of deposit accounts 250,000 or less 500,331 1.59 % 569,877 1.44 % Greater than $250,000 547,511 1.77 % 840,800 2.12 % Total certificates of deposit accounts 1,047,842 1.69 % 1,410,677 1.84 % Total deposits $ 8,898,509 0.53 % $ 8,658,351 0.63 %
Schedule of aggregate annual maturities of certificates of deposit accounts	The aggregate annual maturities of certificates of deposit accounts at December 31, 2019 are as follows: 2019 Amount Weighted Average Interest Rate (dollars in thousands) Within 3 months $ 571,143 1.70 % 4 to 6 months 240,132 1.87 % 7 to 12 months 138,515 1.46 % 13 to 24 months 76,617 1.49 % 25 to 36 months 11,182 1.24 % 37 to 60 months 9,644 1.71 % Over 60 months 609 2.08 % Total $ 1,047,842 1.69 %
Schedule of interest expense on deposit accounts	Interest expense on deposit accounts for the years ended December 31 is summarized as follows: 2019 2018 2017 (dollars in thousands) Checking accounts $ 2,340 $ 1,167 $ 365 Money market accounts 28,279 19,567 6,720 Savings 382 357 251 Certificates of deposit accounts 27,296 16,562 6,035 Total $ 58,297 $ 37,653 $ 13,371

Federal Home Loan Bank Advanc_2

Federal Home Loan Bank Advances and Other Borrowings (Tables)	12 Months Ended
	Dec. 31, 2019
Long-term Federal Home Loan Bank Advances [Abstract]
Summary of activities in advances from the FHLB	The following table summarizes activities in advances from the FHLB for the periods indicated: Year Ended December 31, 2019 2018 (dollars in thousands) Average balance outstanding $ 404,959 $ 529,278 Weighted average rate 2.43 % 2.06 % Maximum amount outstanding at any month-end during the year 1,091,596 883,612 Balance outstanding at end of year 517,026 667,606 Weighted average interest rate at year-end 1.69 % 2.51 %
Summary of activities in other borrowings	The following table summarizes activities in other borrowings for the periods indicated: Year Ended December 31, 2019 2018 (dollars in thousands) Average balance outstanding $ 229 $ 29,193 Weighted average rate 0.63 % 1.69 % Maximum amount outstanding at any month-end during the year 10,000 52,091 Balance outstanding at end of year — 75 Weighted average interest rate at year-end — % 0.01 % The following table summarizes our outstanding subordinated debentures as of December 31: 2019 2018 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 $ 59,432 $ 59,312 Subordinated notes due 2029, 4.875% per annum until May 15, 2024, 3-month LIBOR +2.5% thereafter May 15, 2029 4.875 % 125,000 122,622 — Subordinated notes due 2025, 7.125% per annum June 26, 2025 7.125 % 25,000 25,133 25,158 Total subordinated notes 210,000 207,187 84,470 Subordinated debt PPBI Trust I, 3-month LIBOR+2.75% April 6, 2034 — — 10,310 Heritage Oaks Capital Trust II (junior subordinated debt), 3-month LIBOR+1.72% January 1, 2037 3.82 % 5,248 4,054 3,986 Santa Lucia Bancorp (CA) Capital Trust (junior subordinated debt), 3-month LIBOR+1.48% July 7, 2036 3.47 % 5,155 3,904 3,829 Mission Community Capital Trust (junior subordinated debt), 3-month LIBOR+2.95% October 7, 2033 — — 2,787 First Commerce Bancorp Statutory Trust I (junior subordinated debt), 3-month LIBOR+2.95% September 17, 2033 — — 4,931 Total subordinated debt 10,403 7,958 25,843 Total subordinated debentures $ 220,403 $ 215,145 $ 110,313

Subordinated Debentures (Tables

Subordinated Debentures (Tables)	12 Months Ended
	Dec. 31, 2019
Debt Disclosure [Abstract]
Schedule of outstanding subordinated debentures	The following table summarizes activities in other borrowings for the periods indicated: Year Ended December 31, 2019 2018 (dollars in thousands) Average balance outstanding $ 229 $ 29,193 Weighted average rate 0.63 % 1.69 % Maximum amount outstanding at any month-end during the year 10,000 52,091 Balance outstanding at end of year — 75 Weighted average interest rate at year-end — % 0.01 % The following table summarizes our outstanding subordinated debentures as of December 31: 2019 2018 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 $ 59,432 $ 59,312 Subordinated notes due 2029, 4.875% per annum until May 15, 2024, 3-month LIBOR +2.5% thereafter May 15, 2029 4.875 % 125,000 122,622 — Subordinated notes due 2025, 7.125% per annum June 26, 2025 7.125 % 25,000 25,133 25,158 Total subordinated notes 210,000 207,187 84,470 Subordinated debt PPBI Trust I, 3-month LIBOR+2.75% April 6, 2034 — — 10,310 Heritage Oaks Capital Trust II (junior subordinated debt), 3-month LIBOR+1.72% January 1, 2037 3.82 % 5,248 4,054 3,986 Santa Lucia Bancorp (CA) Capital Trust (junior subordinated debt), 3-month LIBOR+1.48% July 7, 2036 3.47 % 5,155 3,904 3,829 Mission Community Capital Trust (junior subordinated debt), 3-month LIBOR+2.95% October 7, 2033 — — 2,787 First Commerce Bancorp Statutory Trust I (junior subordinated debt), 3-month LIBOR+2.95% September 17, 2033 — — 4,931 Total subordinated debt 10,403 7,958 25,843 Total subordinated debentures $ 220,403 $ 215,145 $ 110,313
Schedule of summarizes activities for our subordinated debentures	The following table summarizes activities for our subordinated debentures for the periods indicated: Year Ended December 31, 2019 2018 (dollars in thousands) Average balance outstanding $ 183,383 $ 107,732 Weighted average rate 5.82 % 6.23 % Maximum amount outstanding at any month-end during the year 233,119 110,313 Balance outstanding at end of year 215,145 110,313 Weighted average interest rate at year-end 5.37 % 6.04 %

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Schedule of components of income taxes	The following presents the components of income tax expense for the years ended December 31: 2019 2018 2017 (dollars in thousands) Current income tax provision: Federal $ 34,124 $ 19,787 $ 18,644 State 16,415 13,178 7,062 Total current income tax provision 50,539 32,965 25,706 Deferred income tax provision (benefit): Federal 4,645 8,142 8,294 Effect of the Tax Act — (1,441 ) 5,633 State 2,851 2,574 2,493 Total deferred income tax provision (benefit) 7,496 9,275 16,420 Total income tax provision $ 58,035 $ 42,240 $ 42,126
Schedule of reconciliation from statutory federal income taxes to the Company's effective income taxes	A reconciliation from statutory federal income taxes, which are based on a statutory rate of 21% for 2019 and 2018 and 35% for 2017 , to the Company’s total effective income tax provisions for the years ended December 31 is as follows: 2019 2018 2017 (dollars in thousands) Statutory federal income tax provision $ 45,729 $ 34,803 $ 35,778 State taxes, net of federal income tax effect 15,764 12,724 6,720 Cash surrender life insurance (565 ) (582 ) (645 ) Tax exempt interest (1,503 ) (1,135 ) (1,660 ) Non-deductible merger costs — 375 824 LIHTC investments (1,570 ) (761 ) (1,031 ) Effect of the Tax Act — (1,441 ) 5,633 Excess tax benefit of stock-based compensation (728 ) (1,811 ) (1,995 ) Prior year true-up — — (1,108 ) Other 908 68 (390 ) Total income tax provision $ 58,035 $ 42,240 $ 42,126
Schedule of deferred tax assets (liabilities) comprised of the temporary differences between the financial statement carrying amounts and the tax basis of assets	Deferred tax assets (liabilities) were comprised of the following temporary differences between the financial statement carrying amounts and the tax basis of assets at December 31: 2019 2018 (dollars in thousands) Deferred tax assets: Accrued expenses $ 2,126 $ 3,239 Net operating loss 4,765 6,115 Allowance for loan losses, net of bad debt charge-offs 10,415 10,709 Deferred compensation 3,616 3,649 State taxes 3,746 2,707 Loan discount 11,634 17,677 Stock-based compensation 3,535 3,234 Unrealized loss on available for sale securities — 2,308 Operating lease liabilities 13,334 — AMT credit and other state tax credit carryovers 416 96 Total deferred tax assets 53,587 49,734 Deferred tax liabilities: Operating lease right-of-use assets $ (12,382 ) $ — Deferred FDIC gain (228 ) (364 ) Core deposit intangibles (22,415 ) (27,388 ) Loan origination costs (4,828 ) (4,760 ) Depreciation (1,814 ) (1,192 ) Unrealized gain on available for sale securities (8,639 ) — Other (4,652 ) (403 ) Total deferred tax liabilities (54,958 ) (34,107 ) Valuation allowance — — Net deferred tax (liabilities) asset $ (1,371 ) $ 15,627
Reconciliation of unrecognized tax benefits	A reconciliation of the beginning and ending amount of unrecognized tax benefits for the years ended December 31, 2019 and 2018 is as follows: 2019 2018 (dollars in thousands) Balance at January 1, $ 2,906 $ 2,906 Additions based on tax positions related to prior years — — Balance at December 31, $ 2,906 $ 2,906

Benefit Plans (Tables)

Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2019
Retirement Benefits [Abstract]
Summary of the activity in the Option Plan	Below is a summary of the stock option activity in the Plans for the year ended December 31, 2019 : 2019 Number of Stock Options Outstanding Weighted Average Exercise Price Per Share Weighted Average Remaining Contractual Term Aggregate Intrinsic value (in years) (dollars in thousands) Outstanding at January 1, 2019 681,933 $ 15.26 Granted — — Exercised (220,118 ) 13.17 Forfeited and expired (8,711 ) 15.84 Outstanding at December 31, 2019 453,104 $ 16.26 4.66 $ 7,401 Vested and exercisable at December 31, 2019 451,424 $ 16.24 4.66 $ 7,382
Schedule of Other Share-based Compensation, Activity	Below is a summary of the activity for restricted stock and restricted stock units in the Plans for the years ended December 31, 2019 : 2019 Shares Weighted Average Grant-Date Fair Value Per Share Unvested at the beginning of the year 636,077 $ 35.98 Granted 423,823 29.92 Vested (287,754 ) 29.43 Forfeited (32,213 ) 34.76 Unvested at the end of the year 739,933 $ 35.11

Fair Value of Financial Instr_2

Fair Value of Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2019
Fair Value Disclosures [Abstract]
Schedule of Company's financial instruments measured at fair value on a recurring basis	The following fair value hierarchy tables present information about the Company’s assets measured at fair value on a recurring basis at the dates indicated: At December 31, 2019 Fair Value Measurement Using Level 1 Level 2 Level 3 Securities at Fair Value (dollars in thousands) Financial assets Investment securities available-for-sale: U.S. Treasury $ — $ 63,555 $ — $ 63,555 Agency — 246,358 — 246,358 Corporate — 151,353 — 151,353 Municipal bonds — 397,298 — 397,298 Collateralized mortgage obligation: residential — 9,984 — 9,984 Mortgage-backed securities: residential — 499,836 — 499,836 Total securities available-for-sale $ — $ 1,368,384 $ — $ 1,368,384 Derivative assets $ — $ 2,103 $ — $ 2,103 Financial liabilities Derivative liabilities $ — $ 2,103 $ — $ 2,103 At December 31, 2018 Fair Value Measurement Using Level 1 Level 2 Level 3 Securities at Fair Value (dollars in thousands) Financial assets Investment securities available-for-sale: U.S. Treasury $ — $ 60,912 $ — $ 60,912 Agency — 130,070 $ — 130,070 Corporate — 103,543 $ — 103,543 Municipal bonds — 238,630 — 238,630 Collateralized mortgage obligation: residential — 24,338 — 24,338 Mortgage-backed securities: residential — 545,729 — 545,729 Total securities available-for-sale $ — $ 1,103,222 $ — $ 1,103,222 Derivative assets $ — $ 1,681 $ — $ 1,681 Financial liabilities Derivative liabilities $ — $ 1,681 $ — $ 1,681
Schedule of Company's financial instruments measured at fair value on a nonrecurring basis	The following table presents our assets measured at fair value on a nonrecurring basis at December 31, 2019 and 2018 . At December 31, 2019 Level 1 Level 2 Level 3 Total Fair Value (dollars in thousands) Financial assets Impaired loans $ — $ — $ 2,257 $ 2,257 At December 31, 2018 Level 1 Level 2 Level 3 Total Fair Value (dollars in thousands) Financial assets Impaired loans $ — $ — $ 1,445 $ 1,445
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 December 31, 2019 Carrying Amount Level 1 Level 2 Level 3 Estimated Fair Value (dollars in thousands) Assets: Cash and cash equivalents $ 326,850 $ 326,850 $ — $ — $ 326,850 Interest-bearing time deposits with financial institutions 2,708 2,708 — — 2,708 Investments held-to-maturity 37,838 — 38,760 — 38,760 Investment securities available-for-sale 1,368,384 — 1,368,384 — 1,368,384 Loans held for sale 1,672 — 1,821 — 1,821 Loans held for investment, net 8,722,311 — — 8,691,019 8,691,019 Derivative asset 2,103 — 2,103 — 2,103 Accrued interest receivable 39,442 39,442 — — 39,442 Liabilities: Deposit accounts 8,898,509 7,850,667 1,048,583 — 8,899,250 FHLB advances 517,026 — 517,291 — 517,291 Other borrowings — — — — — Subordinated debentures 215,145 — 237,001 — 237,001 Derivative liability 2,103 — 2,103 — 2,103 Accrued interest payable 2,686 2,686 — — 2,686 At December 31, 2018 Carrying Amount Level 1 Level 2 Level 3 Estimated Fair Value (dollars in thousands) Assets: Cash and cash equivalents $ 203,406 $ 203,406 $ — $ — $ 203,406 Interest-bearing time deposits with financial institutions 6,143 6,143 — — 6,143 Investments held-to-maturity 45,210 — 44,672 — 44,672 Investment securities available-for-sale 1,103,222 — 1,103,222 — 1,103,222 Loans held for sale 5,719 — 6,072 — 6,072 Loans held for investment, net 8,836,818 — — 8,697,594 8,697,594 Derivative asset 1,929 — 1,681 — 1,681 Accrued interest receivable 37,837 37,837 — — 37,837 Liabilities: Deposit accounts 8,658,351 7,247,673 1,403,524 — 8,651,197 FHLB advances 667,606 — 666,864 — 666,864 Other borrowings 75 — 75 — 75 Subordinated debentures 110,313 — 115,613 — 115,613 Derivative liability 1,929 — 1,681 — 1,681 Accrued interest payable 3,255 3,255 — — 3,255

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2019
Earnings Per Share [Abstract]
Schedule of Company's unaudited earnings per share calculations	The following tables set forth the Company’s earnings per share calculations for the periods indicated: For the Year Ended December 31, 2019 2018 2017 (dollars in thousands, except per share data) Basic Net income $ 159,718 $ 123,340 $ 60,100 Less: Earnings allocated to participating securities (1,650 ) — — Net income allocated to common stockholders $ 158,068 $ 123,340 $ 60,100 Weighted average common shares outstanding 60,339,714 53,963,047 37,705,556 Basic earnings per common share $ 2.62 $ 2.29 $ 1.59 Diluted Net income allocated to common stockholders $ 158,068 $ 123,340 $ 60,100 Weighted average common shares outstanding 60,339,714 53,963,047 37,705,556 Diluted effect of share-based compensation 352,567 650,010 805,705 Weighted average diluted common shares 60,692,281 54,613,057 38,511,261 Diluted earnings per common share $ 2.60 $ 2.26 $ 1.56

Derivative Instruments (Tables)

Derivative Instruments (Tables)	12 Months Ended
	Dec. 31, 2019
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. December 31, 2019 Derivative Assets Derivative Liabilities Notional Fair Value Notional Fair Value (dollars in thousands) Derivative instruments not designated as hedging instruments: Interest rate swap contracts $ 76,314 $ 2,103 $ 76,314 $ 2,103 Total derivative instruments $ 76,314 $ 2,103 $ 76,314 $ 2,103 December 31, 2018 Derivative Assets Derivative Liabilities Notional Fair Value Notional Fair Value (dollars in thousands) Derivative instruments not designated as hedging instruments: Interest rate swap contracts $ 57,502 $ 1,681 $ 57,502 $ 1,681 Total derivative instruments $ 57,502 $ 1,681 $ 57,502 $ 1,681

Balance Sheet Offsetting (Table

Balance Sheet Offsetting (Tables)	12 Months Ended
	Dec. 31, 2019
Offsetting [Abstract]
Offsetting Assets and Liabilities	Financial instruments that are eligible for offset in the consolidated statements of financial condition as of December 31, 2019 are presented in the table below: December 31, 2019 Gross Amounts Not Offset in the Consolidated Gross Amounts Recognized in the Consolidated Balance Sheets Gross Amounts Offset in the Consolidated Balance Sheets Net Amounts Presented in the Consolidated Balance Sheets Financial Instruments Cash Collateral (1) Net Amount (dollars in thousands) Financial assets: Derivatives not designated as $ 2,103 $ — $ 2,103 $ — $ — $ 2,103 Total $ 2,103 $ — $ 2,103 $ — $ — $ 2,103 Financial liabilities: Derivatives not designated as $ 2,107 $ (4 ) $ 2,103 $ — $ (1,678 ) $ 425 Total $ 2,107 $ (4 ) $ 2,103 $ — $ (1,678 ) $ 425 (1) Represents cash collateral held with counterparty bank. December 31, 2018 Gross Amounts Not Offset in the Consolidated Gross Amounts Recognized in the Consolidated Balance Sheets Gross Amounts Offset in the Consolidated Balance Sheets Net Amounts Presented in the Consolidated Balance Sheets Financial Instruments Cash Collateral (1) Net Amount (dollars in thousands) Financial assets: Derivatives not designated as $ 2,177 $ (496 ) $ 1,681 $ — $ — $ 1,681 Total $ 2,177 $ (496 ) $ 1,681 $ — $ — $ 1,681 Financial liabilities: Derivatives not designated as $ 1,681 $ — $ 1,681 $ — $ — $ 1,681 Total $ 1,681 $ — $ 1,681 $ — $ — $ 1,681 (1) Represents cash collateral held with counterparty bank.

Revenue Recognition (Tables)

Revenue Recognition (Tables)	12 Months Ended
	Dec. 31, 2019
Revenue from Contract with Customer [Abstract]
Summary of Company's Revenue Streams	The following table provides a summary of the Company’s noninterest income, segregated by revenue streams within and outside the scope of ASC 606 for the periods indicated: For the Year Ended December 31, 2019 2018 2017 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 fees $ — $ 1,840 $ — $ 1,445 $ — $ 787 Service charges on deposit accounts 5,769 — 5,128 — 3,273 — Other service fee income 1,438 — 902 — 1,847 — Debit card interchange income 3,004 — 4,326 — 2,043 — Earnings on bank-owned life insurance — 3,486 — 3,427 — 2,279 Net gain from sales of loans — 6,642 — 10,759 — 12,468 Net gain from sales of investment securities — 8,571 — 1,399 — 2,737 Other income 1,015 3,471 1,242 2,399 491 5,189 Total noninterest income $ 11,226 $ 24,010 $ 11,598 $ 19,429 $ 7,654 $ 23,460 ______________________________ (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 U.S. GAAP requirements.

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2019
Leases [Abstract]
Schedule of supplemental information	The following table presents supplemental information related to operating leases as of the period indicated: December 31, 2019 (dollars in thousands) Balance Sheet: Operating lease right of use assets $ 43,177 Operating lease liabilities 46,498 Cash Flows: Operating cash flows from operating leases 11,747
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 December 31, 2019 : 2020 2021 2022 2023 2024 Thereafter Total (dollars in thousands) Contractual base rents (1) : Operating leases $ 10,138 $ 10,602 $ 10,137 $ 9,055 $ 7,318 $ 7,265 $ 54,515 Short-term leases 143 7 — — — — 150 Total contractual base rents $ 10,281 $ 10,609 $ 10,137 $ 9,055 $ 7,318 $ 7,265 $ 54,665 Total liability to make lease payments $ 46,498 Difference in undiscounted and discounted future lease payments 8,167 Weighted average discount rate 6.13 % Weighted average remaining lease term (years) 5.4 (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.
Schedule of information related to minimum contractual lease payments	The following table provides information related to minimum contractual lease payments for the periods indicated below as of December 31, 2018 (1) : 2019 2020 2021 2022 2023 Thereafter Total (dollars in thousands) Minimum contractual lease payments $ 11,468 $ 10,869 $ 10,133 $ 9,296 $ 8,124 $ 10,518 $ 60,408 (1) Contractual base rents in the table above are reflective of future lease obligations under ASC 840, prior to the implementation of ASC 842. The amounts in the table above do not reflect extensions or renewals and do not include property taxes and other operating expenses due under respective lease agreements. The amounts in the table above also reflect future lease obligations for certain leases that had not yet commenced as of December 31, 2018.

Quarterly Results of Operatio_2

Quarterly Results of Operations (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2019
Quarterly Financial Information Disclosure [Abstract]
Summary of selected financial data by quarter	The following is a summary of selected financial data presented below by quarter for the periods indicated: First Quarter Second Quarter Third Quarter Fourth Quarter (dollars in thousands, except per share data) For the year ended December 31, 2019: Interest income $ 131,243 $ 132,414 $ 132,604 $ 129,846 Interest expense 19,837 21,773 20,269 16,927 Provision for credit losses 1,526 334 1,562 2,297 Noninterest income 7,681 6,324 11,430 9,801 Noninterest expense 63,577 63,936 65,336 66,216 Income tax provision 15,266 14,168 15,492 13,109 Net income $ 38,718 $ 38,527 $ 41,375 $ 41,098 Earnings per share: Basic $ 0.62 $ 0.62 $ 0.69 $ 0.69 Diluted 0.62 0.62 0.69 0.69 For the year ended December 31, 2018: Interest income $ 90,827 $ 92,699 $ 128,876 $ 136,021 Interest expense 9,546 11,528 16,163 18,475 Provision for credit losses 2,253 1,761 1,981 2,258 Noninterest income 7,666 8,151 8,240 6,970 Noninterest expense 49,808 50,076 82,782 67,239 Income tax provision 8,884 10,182 7,798 15,376 Net income $ 28,002 $ 27,303 $ 28,392 $ 39,643 Earnings per share: Basic $ 0.61 $ 0.59 $ 0.46 $ 0.64 Diluted 0.60 0.58 0.46 0.63

Parent Company Financial Info_2

Parent Company Financial Information (Tables)	12 Months Ended
	Dec. 31, 2019
Condensed Financial Information Disclosure [Abstract]
Schedule of condensed balance sheets	Condensed financial statements of the Corporation are as follows: PACIFIC PREMIER BANCORP, INC. STATEMENTS OF FINANCIAL CONDITION (Parent company only) At December 31, 2019 2018 (dollars in thousands) Assets Cash and cash equivalents $ 13,717 $ 13,160 Investment in subsidiaries 2,217,903 2,068,077 Other assets 1,230 1,689 Total Assets $ 2,232,850 $ 2,082,926 Liabilities Subordinated debentures $ 215,145 $ 110,313 Accrued expenses and other liabilities 5,111 2,916 Total Liabilities 220,256 113,229 Total Stockholders’ Equity 2,012,594 1,969,697 Total Liabilities and Stockholders’ Equity $ 2,232,850 $ 2,082,926
Schedule of condensed statements of operations	PACIFIC PREMIER BANCORP, INC. STATEMENTS OF OPERATIONS (Parent company only) For the Year Ended December 31, 2019 2018 2017 (dollars in thousands) Income Dividend income from the Bank $ 54,118 $ — $ — Interest income 51 57 36 Total income 54,169 57 36 Expense Interest expense on subordinated debentures 10,680 6,716 4,721 Compensation and benefits 3,106 2,757 2,832 Other noninterest expense 2,818 3,384 6,123 Total expense 16,604 12,857 13,676 Income (loss) before income tax provision 37,565 (12,800 ) (13,640 ) Income tax benefit (4,695 ) (3,680 ) (5,417 ) Income (loss) before undistributed income of subsidiary 42,260 (9,120 ) (8,223 ) Equity in undistributed earnings of subsidiary 117,458 132,460 68,323 Net income $ 159,718 $ 123,340 $ 60,100
Schedule of condensed statements of cash flows	PACIFIC PREMIER BANCORP, INC. SUMMARY STATEMENTS OF CASH FLOWS (Parent company only) For the Year Ended December 31, 2019 2018 2017 (dollars in thousands) CASH FLOWS FROM OPERATING ACTIVITIES Net income $ 159,718 $ 123,340 $ 60,100 Adjustments to reconcile net income to cash used in operating activities: Share-based compensation expense 10,528 9,033 5,809 Equity in undistributed earnings of subsidiary and dividends from the bank (117,458 ) (132,460 ) (68,323 ) Increase in current and deferred taxes 42 65 — Change in accrued expenses and other liabilities, net 3,131 (4,149 ) (365 ) Change in accrued interest receivable and other assets, net (4,826 ) 2,461 817 Net cash provided by (used) in operating activities 51,135 (1,710 ) (1,962 ) CASH FLOWS FROM INVESTING ACTIVITIES: Cash acquired in acquisitions, net — 2,985 — Other, net — (5,467 ) 601 Net cash (used in) provided by investing activities — (2,482 ) 601 CASH FLOWS FROM FINANCING ACTIVITIES: Redemption of junior subordinated debt securities (18,558 ) — — Proceeds from issuance of subordinated debt, net 122,453 — — Cash dividends paid (53,867 ) — — Repurchase and retirement of common stock (100,000 ) — — Proceeds from exercise of options 2,679 1,924 4,592 Restricted stock surrendered and canceled (3,285 ) (1,669 ) (1,258 ) Net cash (used in) provided by financing activities (50,578 ) 255 3,334 Net increase (decrease) in cash and cash equivalents 557 (3,937 ) 1,973 Cash and cash equivalents, beginning of year 13,160 17,097 15,124 Cash and cash equivalents, end of year $ 13,717 13,160 $ 17,097

Acquisitions (Tables)

Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2019
Business Combinations [Abstract]
Schedule of assets acquired and liabilities assumed and the provisional fair value adjustments and amounts recorded	The following table represents the HEOP assets acquired and liabilities assumed as of April 1, 2017 and the fair value adjustments and amounts recorded by the Company under the acquisition method of accounting: HEOP Book Value Fair Value Adjustments Fair Value ASSETS ACQUIRED (dollars in thousands) Cash and cash equivalents $ 78,728 $ — $ 78,728 Investment securities 445,299 (2,376 ) 442,923 Loans, gross 1,384,949 (20,261 ) 1,364,688 Allowance for loan losses (17,200 ) 17,200 — Fixed assets 35,567 (665 ) 34,902 Core deposit intangible 3,207 24,916 28,123 Deferred tax assets 17,850 (7,606 ) 10,244 Other assets 55,235 (21 ) 55,214 Total assets acquired $ 2,003,635 $ 11,187 $ 2,014,822 LIABILITIES ASSUMED Deposits $ 1,668,085 $ 1,465 $ 1,669,550 Borrowings 139,150 (116 ) 139,034 Other Liabilities 8,059 293 8,352 Total liabilities assumed 1,815,294 1,642 1,816,936 Excess of assets acquired over liabilities assumed $ 188,341 $ 9,545 197,886 Consideration paid 467,439 Goodwill recognized $ 269,553 The following table represents the PLZZ assets acquired and liabilities assumed as of November 1, 2017 and the fair value adjustments and amounts recorded by the Company under the acquisition method of accounting: PLZZ Fair Value Fair Book Value Adjustment Value (dollars in thousands) ASSETS ACQUIRED Cash and cash equivalents $ 150,459 $ — $ 150,459 Loans, gross 1,069,359 (6,458 ) 1,062,901 Allowance for loan losses (13,009 ) 13,009 — Fixed assets 7,389 (1,424 ) 5,965 Core deposit intangible 198 10,575 10,773 Deferred tax assets 11,849 (6,123 ) 5,726 Other assets 19,495 (589 ) 18,906 Total assets acquired $ 1,245,740 $ 8,990 $ 1,254,730 LIABILITIES ASSUMED Deposits $ 1,081,727 $ 1,224 $ 1,082,951 Borrowings 40,755 397 41,152 Other Liabilities 8,956 (450 ) 8,506 Total liabilities assumed 1,131,438 1,171 1,132,609 Excess of assets acquired over liabilities assumed $ 114,302 $ 7,819 122,121 Consideration paid 245,761 Goodwill recognized $ 123,640 The following table represents the Grandpoint assets acquired and liabilities assumed as of July 1, 2018 and the fair value adjustments and amounts recorded by the Company under the acquisition method of accounting: Grandpoint Fair Value Fair Book Value Adjustment Value (dollars in thousands) ASSETS ACQUIRED Cash and cash equivalents $ 147,551 $ — $ 147,551 Investment securities 395,905 (3,047 ) 392,858 Loans, gross 2,404,042 (51,325 ) 2,352,717 Allowance for loan losses (18,665 ) 18,665 — Fixed assets 6,015 3,107 9,122 Core deposit intangible 5,093 66,850 71,943 Deferred tax assets 14,185 (9,157 ) 5,028 Other assets 97,441 (436 ) 97,005 Total assets acquired $ 3,051,567 $ 24,657 $ 3,076,224 LIABILITIES ASSUMED Deposits $ 2,506,663 $ 266 $ 2,506,929 Borrowings 255,155 (232 ) 254,923 Other Liabilities 23,687 1,172 24,859 Total liabilities assumed 2,785,505 1,206 2,786,711 Excess of assets acquired over liabilities assumed $ 266,062 $ 23,451 289,513 Consideration paid 602,152 Goodwill recognized $ 312,639
Schedule of contractual amounts due, expected cash flows to be collected, interest component and fair value as of the respective acquisition dates	For loans acquired from Grandpoint, PLZZ and HEOP, the contractual amounts due, expected cash flows to be collected, interest component and fair value as of the respective acquisition dates were as follows: Acquired Loans Grandpoint PLZZ HEOP (dollars in thousands) Contractual amounts due $ 3,496,905 $ 1,708,685 $ 1,717,230 Cash flows not expected to be collected 39,071 20,152 4,442 Expected cash flows 3,457,834 1,688,533 1,712,788 Interest component of expected cash flows 1,105,117 625,632 348,100 Fair value of acquired loans $ 2,352,717 $ 1,062,901 $ 1,364,688
Summary of pro forma net interest and other income, net income and earnings per share	There were no material, nonrecurring adjustments to the unaudited pro forma net interest and other income, net income and earnings per share presented below: Year Ended December 31, 2018 2017 (dollars in thousands, except per share data) Net interest and other income $ 473,748 $ 465,400 Net income 133,565 96,758 Basic earnings per share 2.16 1.58 Diluted earnings per share 2.14 1.56

Description of Business and S_3

Description of Business and Summary of Significant Accounting Policies (Details)	12 Months Ended
	Dec. 31, 2019USD ($)depository_branch	Dec. 31, 2018USD ($)	Jan. 01, 2019USD ($)
Accounting Policies [Abstract]
Percentage of capital stock of the Bank held	100.00%
Number of depository branches | depository_branch	41
Cash and Cash Equivalents
Cash reserves required by the Board of Governors of the Federal Reserve for depository institutions (in dollars)	$ 0
Premises, furniture and equipment
Valuation allowance	0	$ 0
Reclassification of certain tax effects of the Tax Cuts and Jobs Act		0
Operating lease liabilities	46,498,000
Operating lease right of use assets	43,177,000
Accumulated Other Comprehensive Income (Loss)
Premises, furniture and equipment
Reclassification of certain tax effects of the Tax Cuts and Jobs Act		82,000
Accumulated Retained Earnings
Premises, furniture and equipment
Reclassification of certain tax effects of the Tax Cuts and Jobs Act		$ (82,000)
Accounting Standards Update 2016-02
Premises, furniture and equipment
Operating lease liabilities			$ 45,700,000
Operating lease right of use assets			43,800,000
Cumulative adjustment not recorded			$ 1,900,000
Minimum | Accounting Standards Update 2016-13
Premises, furniture and equipment
Allowance for credit losses	50,000,000
Maximum | Accounting Standards Update 2016-13
Premises, furniture and equipment
Allowance for credit losses	$ 60,000,000
Core Deposits | Minimum
Premises, furniture and equipment
Weighted average useful life (in years)	6 years
Core Deposits | Maximum
Premises, furniture and equipment
Weighted average useful life (in years)	11 years
Premises
Premises, furniture and equipment
Estimated useful life (in years)	40 years
Furniture, fixtures and equipment
Premises, furniture and equipment
Estimated useful life (in years)	7 years
Computer and telecommunication
Premises, furniture and equipment
Estimated useful life (in years)	3 years

Regulatory Capital Requiremen_3

Regulatory Capital Requirements and Other Regulatory Matters (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Tier 1 Leverage Ratio
Actual, Amount (in dollars)	$ 1,123,740	$ 1,112,132
Actual, Ratio (as a percent)	10.54%	10.38%
Minimum Required for Capital Adequacy Purposes Amount (in dollars)	$ 426,597	$ 428,751
Minimum Required for Capital Adequacy Purposes Ratio (as a percent)	4.00%	4.00%
Minimum Required Plus Capital Conservation Buffer Fully Phased-In, Amount (in dollars)	$ 426,597	$ 428,751
Minimum Required Plus Capital Conservation Buffer Fully Phased-In Ratio (as a percent)	4.00%	4.00%
Common Equity Tier 1 Capital Ratio
Actual, Amount (in dollars)	$ 1,116,185	$ 1,087,164
Actual, Ratio (as a percent)	11.35%	10.88%
Minimum Required for Capital Adequacy Purposes (in dollars)	$ 442,612	$ 449,505
Minimum Required for Capital Adequacy Purposes (as a percent)	4.50%	4.50%
Minimum Required Plus Capital Conservation Buffer Fully Phased-In, Amount (in dollars)	$ 688,508	$ 699,230
Minimum Required Plus Capital Conservation Buffer Fully Phased-In Ratio (as a percent)	7.00%	7.00%
Tier 1 Capital to Ratio
Actual, Amount (in dollars)	$ 1,123,740	$ 1,112,132
Actual, Ratio (as a percent)	11.42%	11.13%
Minimum Required for Capital Adequacy Purposes Amount (in dollars)	$ 590,149	$ 599,340
Minimum Required for Capital Adequacy Purposes Ratio (as a percent)	6.00%	6.00%
Minimum Required Plus Capital Conservation Buffer Fully Phased-In, Amount (in dollars)	$ 836,045	$ 849,065
Minimum Required Plus Capital Conservation Buffer Fully Phased-In, Ratio (as a percent)	8.50%	8.50%
Total Capital Ratio
Actual, Amount (in dollars)	$ 1,357,904	$ 1,237,315
Actual, Ratio (as a percent)	13.81%	12.39%
Minimum Required for Capital Adequacy Purposes Amount (in dollars)	$ 786,866	$ 799,120
Minimum Required for Capital Adequacy Purposes Ratio (as a percent)	8.00%	8.00%
Minimum Required Plus Capital Conservation Buffer Fully Phased-In, Amount (in dollars)	$ 1,032,762	$ 1,048,845
Minimum Required Plus Capital Conservation Buffer Fully Phased-In, Ratio (as a percent)	10.50%	10.50%
Pacific Premier Bank
Tier 1 Leverage Ratio
Actual, Amount (in dollars)	$ 1,321,494	$ 1,185,544
Actual, Ratio (as a percent)	12.39%	11.06%
Minimum Required for Capital Adequacy Purposes Amount (in dollars)	$ 426,592	$ 428,703
Minimum Required for Capital Adequacy Purposes Ratio (as a percent)	4.00%	4.00%
Minimum Required Plus Capital Conservation Buffer Fully Phased-In, Amount (in dollars)	$ 426,592	$ 428,703
Minimum Required Plus Capital Conservation Buffer Fully Phased-In Ratio (as a percent)	4.00%	4.00%
Required to be Well Capitalized Under Prompt Corrective Action Regulations, Amount (in dollars)	$ 533,240	$ 535,879
Required to be Well Capitalized Under Prompt Corrective Action Regulations, Ratio (as a percent)	5.00%	5.00%
Common Equity Tier 1 Capital Ratio
Actual, Amount (in dollars)	$ 1,321,494	$ 1,185,544
Actual, Ratio (as a percent)	13.43%	11.87%
Minimum Required for Capital Adequacy Purposes (in dollars)	$ 442,704	$ 449,481
Minimum Required for Capital Adequacy Purposes (as a percent)	4.50%	4.50%
Minimum Required Plus Capital Conservation Buffer Fully Phased-In, Amount (in dollars)	$ 688,650	$ 699,193
Minimum Required Plus Capital Conservation Buffer Fully Phased-In Ratio (as a percent)	7.00%	7.00%
Required to be Well Capitalized Under Prompt Corrective Action Regulations (in dollars)	$ 639,461	$ 649,251
Required to be Well Capitalized Under Prompt Corrective Action Regulations (as a percent)	6.50%	6.50%
Tier 1 Capital to Ratio
Actual, Amount (in dollars)	$ 1,321,494	$ 1,185,544
Actual, Ratio (as a percent)	13.43%	11.87%
Minimum Required for Capital Adequacy Purposes Amount (in dollars)	$ 590,272	$ 599,308
Minimum Required for Capital Adequacy Purposes Ratio (as a percent)	6.00%	6.00%
Minimum Required Plus Capital Conservation Buffer Fully Phased-In, Amount (in dollars)	$ 836,218	$ 849,020
Minimum Required Plus Capital Conservation Buffer Fully Phased-In, Ratio (as a percent)	8.50%	8.50%
Required to be Well Capitalized Under Prompt Corrective Action Regulations, Amount (in dollars)	$ 787,029	$ 799,078
Required to be Well Capitalized Under Prompt Corrective Action Regulations, Ratio (as a percent)	8.00%	8.00%
Total Capital Ratio
Actual, Amount (in dollars)	$ 1,360,471	$ 1,226,258
Actual, Ratio (as a percent)	13.83%	12.28%
Minimum Required for Capital Adequacy Purposes Amount (in dollars)	$ 787,029	$ 799,078
Minimum Required for Capital Adequacy Purposes Ratio (as a percent)	8.00%	8.00%
Minimum Required Plus Capital Conservation Buffer Fully Phased-In, Amount (in dollars)	$ 1,032,975	$ 1,048,790
Minimum Required Plus Capital Conservation Buffer Fully Phased-In, Ratio (as a percent)	10.50%	10.50%
Required to be Well Capitalized Under Prompt Corrective Action Regulations, Amount (in dollars)	$ 983,786	$ 998,847
Required to be Well Capitalized Under Prompt Corrective Action Regulations, Ratio (as a percent)	10.00%	10.00%

Investment Securities - The amo

Investment Securities - The amortized cost and estimated fair value of securities (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Investment securities available-for-sale:
Amortized Cost	$ 1,338,260,000	$ 1,111,168,000
Unrealized Gain	34,216,000	6,263,000
Unrealized Loss	(4,092,000)	(14,209,000)
Estimated Fair Value	1,368,384,000	1,103,222,000
Investment securities held-to-maturity:
Amortized Cost	37,838,000	45,210,000
Unrealized Gain	922,000	148,000
Unrealized Loss	0	(686,000)
Estimated Fair Value	38,760,000	44,672,000
Total investment securities
Amortized Cost	1,376,098,000	1,156,378,000
Unrealized Gain	35,138,000	6,411,000
Unrealized Loss	(4,092,000)	(14,895,000)
Estimated Fair Value	1,407,144,000	1,147,894,000
Additional disclosures
Accumulated other comprehensive income (loss)	30,100,000	(7,900,000)
Accumulated other comprehensive income (loss), net of tax	21,523,000	(5,601,000)
Average balance of repurchase agreement facilities		15,000,000
OTTI on investment securities		0	$ 0
Gross gains	10,300,000	1,600,000	3,100,000
Gross losses	1,800,000	208,000	386,000
Net proceeds from the sale of available-for-sale securities	551,784,000	407,004,000	$ 268,596,000
Investment securities pledged	125,700,000	215,300,000
Home Owners Association Loans
Additional disclosures
Value of inverse putable reverse repurchases secured by collateral		75,000
U.S. Treasury
Investment securities available-for-sale:
Amortized Cost	60,457,000	59,688,000
Unrealized Gain	3,137,000	1,224,000
Unrealized Loss	(39,000)	0
Estimated Fair Value	63,555,000	60,912,000
Agency
Investment securities available-for-sale:
Amortized Cost	240,348,000	128,958,000
Unrealized Gain	7,686,000	1,631,000
Unrealized Loss	(1,676,000)	(519,000)
Estimated Fair Value	246,358,000	130,070,000
Corporate debt
Investment securities available-for-sale:
Amortized Cost	149,150,000	104,158,000
Unrealized Gain	2,217,000	291,000
Unrealized Loss	(14,000)	(906,000)
Estimated Fair Value	151,353,000	103,543,000
Municipal bonds
Investment securities available-for-sale:
Amortized Cost	384,032,000	238,914,000
Unrealized Gain	13,450,000	1,941,000
Unrealized Loss	(184,000)	(2,225,000)
Estimated Fair Value	397,298,000	238,630,000
Collateralized mortgage obligation: residential
Investment securities available-for-sale:
Amortized Cost	9,869,000	24,699,000
Unrealized Gain	123,000	64,000
Unrealized Loss	(8,000)	(425,000)
Estimated Fair Value	9,984,000	24,338,000
Mortgage-backed securities: residential
Investment securities available-for-sale:
Amortized Cost	494,404,000	554,751,000
Unrealized Gain	7,603,000	1,112,000
Unrealized Loss	(2,171,000)	(10,134,000)
Estimated Fair Value	499,836,000	545,729,000
Investment securities held-to-maturity:
Amortized Cost	36,114,000	43,381,000
Unrealized Gain	922,000	148,000
Unrealized Loss	0	(686,000)
Estimated Fair Value	37,036,000	42,843,000
Additional disclosures
Estimated par value of securities pledged as collateral for the Bank's inverse putable reverse repurchases		20,300,000
Fair value of securities pledged as collateral for the Bank's inverse putable reverse repurchases		20,900,000
Other
Investment securities held-to-maturity:
Amortized Cost	1,724,000	1,829,000
Unrealized Gain	0	0
Unrealized Loss	0	0
Estimated Fair Value	$ 1,724,000	$ 1,829,000

Investment Securities - Number,

Investment Securities - Number, fair value and gross unrealized holding losses (Details) $ in Thousands	Dec. 31, 2019USD ($)investment_security	Dec. 31, 2018USD ($)investment_security
Number
Less than 12 months | investment_security	45	105
12 months or Longer | investment_security	21	244
Total | investment_security	66	349
Fair Value
Less than 12 months	$ 274,640	$ 190,770
12 months or Longer	41,003	442,464
Total	315,643	633,234
Gross Unrealized Holding Losses
Less than 12 months	(3,258)	(1,609)
12 months or Longer	(834)	(12,600)
Total	$ (4,092)	$ (14,209)
Number
Less than 12 months | investment_security	0	3
12 months or Longer | investment_security	0	3
Total | investment_security	0	6
Fair Value
Less than 12 months	$ 0	$ 11,256
12 months or Longer	0	15,741
Total	0	26,997
Gross Unrealized Holding Losses
Less than 12 months	0	(81)
12 months or Longer	0	(605)
Total	$ 0	$ (686)
Total investment securities
Number, Less than 12 months (in investments) | investment_security	45	108
Number, 12 months or Longer (in investments) | investment_security	21	247
Number, Total (in investments) | investment_security	66	355
Fair Value, Less than 12 months	$ 274,640	$ 202,026
Fair Value, 12 months or Longer	41,003	458,205
Fair Value, Total	315,643	660,231
Gross Unrealized Holding Losses, Less than 12 months	(3,258)	(1,690)
Gross Unrealized Holding Losses, 12 months or longer	(834)	(13,205)
Gross Unrealized Holding Losses, Total	$ (4,092)	$ (14,895)
U.S. Treasury
Number
Less than 12 months | investment_security	1	0
12 months or Longer | investment_security	0	0
Total | investment_security	1	0
Fair Value
Less than 12 months	$ 10,194	$ 0
12 months or Longer	0	0
Total	10,194	0
Gross Unrealized Holding Losses
Less than 12 months	(39)	0
12 months or Longer	0	0
Total	$ (39)	$ 0
Agency
Number
Less than 12 months | investment_security	13	15
12 months or Longer | investment_security	9	6
Total | investment_security	22	21
Fair Value
Less than 12 months	$ 102,874	$ 26,229
12 months or Longer	13,514	10,434
Total	116,388	36,663
Gross Unrealized Holding Losses
Less than 12 months	(1,340)	(333)
12 months or Longer	(336)	(186)
Total	$ (1,676)	$ (519)
Corporate debt
Number
Less than 12 months | investment_security	1	9
12 months or Longer | investment_security	0	8
Total | investment_security	1	17
Fair Value
Less than 12 months	$ 1,017	$ 47,805
12 months or Longer	0	19,369
Total	1,017	67,174
Gross Unrealized Holding Losses
Less than 12 months	(14)	(471)
12 months or Longer	0	(435)
Total	$ (14)	$ (906)
Municipal bonds
Number
Less than 12 months | investment_security	12	60
12 months or Longer | investment_security	0	102
Total | investment_security	12	162
Fair Value
Less than 12 months	$ 30,541	$ 45,083
12 months or Longer	0	69,693
Total	30,541	114,776
Gross Unrealized Holding Losses
Less than 12 months	(184)	(369)
12 months or Longer	0	(1,856)
Total	$ (184)	$ (2,225)
Collateralized mortgage obligation: residential
Number
Less than 12 months | investment_security	0	1
12 months or Longer | investment_security	1	8
Total | investment_security	1	9
Fair Value
Less than 12 months	$ 0	$ 814
12 months or Longer	603	18,104
Total	603	18,918
Gross Unrealized Holding Losses
Less than 12 months	0	(1)
12 months or Longer	(8)	(424)
Total	$ (8)	$ (425)
Mortgage-backed securities: residential
Number
Less than 12 months | investment_security	18	20
12 months or Longer | investment_security	11	120
Total | investment_security	29	140
Fair Value
Less than 12 months	$ 130,014	$ 70,839
12 months or Longer	26,886	324,864
Total	156,900	395,703
Gross Unrealized Holding Losses
Less than 12 months	(1,681)	(435)
12 months or Longer	(490)	(9,699)
Total	$ (2,171)	$ (10,134)
Number
Less than 12 months | investment_security	0	3
12 months or Longer | investment_security	0	3
Total | investment_security	0	6
Fair Value
Less than 12 months	$ 0	$ 11,256
12 months or Longer	0	15,741
Total	0	26,997
Gross Unrealized Holding Losses
Less than 12 months	0	(81)
12 months or Longer	0	(605)
Total	$ 0	$ (686)
Other
Number
Less than 12 months | investment_security	0	0
12 months or Longer | investment_security	0	0
Total | investment_security	0	0
Fair Value
Less than 12 months	$ 0	$ 0
12 months or Longer	0	0
Total	0	0
Gross Unrealized Holding Losses
Less than 12 months	0	0
12 months or Longer	0	0
Total	$ 0	$ 0

Investment Securities - Contrac

Investment Securities - Contractual maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Amortized Cost
Due in One Year or Less	$ 1,499
Due after One Year through Five Years	64,910
Due after Five Years through Ten Years	561,851
Due after Ten Years	710,000
Amortized Cost	1,338,260	$ 1,111,168
Fair Value
Due in One Year or Less	1,514
Due after One Year through Five Years	67,052
Due after Five Years through Ten Years	572,589
Due after Ten Years	727,229
Total	1,368,384	1,103,222
Amortized Cost
Due in One Year or Less	0
Due after One Year through Five Years	908
Due after Five Years through Ten Years	0
Due after Ten Years	36,930
Amortized Cost	37,838	45,210
Fair Value
Due in One Year or Less	0
Due after One Year through Five Years	942
Due after Five Years through Ten Years	0
Due after Ten Years	37,818
Total	38,760	44,672
Amortized Cost
Due in One Year or Less	1,499
Due after One Year through Five Years	65,818
Due after Five Years through Ten Years	561,851
Due after Ten Years	746,930
Total	1,376,098
Fair Value
Due in One Year or Less	1,514
Due after One Year through Five Years	67,994
Due after Five Years through Ten Years	572,589
Due after Ten Years	765,047
Estimated Fair Value	1,407,144	1,147,894
U.S. Treasury
Amortized Cost
Due in One Year or Less	499
Due after One Year through Five Years	20,163
Due after Five Years through Ten Years	39,795
Due after Ten Years	0
Amortized Cost	60,457	59,688
Fair Value
Due in One Year or Less	500
Due after One Year through Five Years	20,586
Due after Five Years through Ten Years	42,469
Due after Ten Years	0
Total	63,555	60,912
Agency
Amortized Cost
Due in One Year or Less	1,000
Due after One Year through Five Years	40,647
Due after Five Years through Ten Years	166,244
Due after Ten Years	32,457
Amortized Cost	240,348	128,958
Fair Value
Due in One Year or Less	1,014
Due after One Year through Five Years	42,162
Due after Five Years through Ten Years	169,070
Due after Ten Years	34,112
Total	246,358	130,070
Corporate debt
Amortized Cost
Due in One Year or Less	0
Due after One Year through Five Years	0
Due after Five Years through Ten Years	135,407
Due after Ten Years	13,743
Amortized Cost	149,150	104,158
Fair Value
Due in One Year or Less	0
Due after One Year through Five Years	0
Due after Five Years through Ten Years	137,518
Due after Ten Years	13,835
Total	151,353	103,543
Municipal bonds
Amortized Cost
Due in One Year or Less	0
Due after One Year through Five Years	1,842
Due after Five Years through Ten Years	26,024
Due after Ten Years	356,166
Amortized Cost	384,032	238,914
Fair Value
Due in One Year or Less	0
Due after One Year through Five Years	1,952
Due after Five Years through Ten Years	26,996
Due after Ten Years	368,350
Total	397,298	238,630
Collateralized mortgage obligation: residential
Amortized Cost
Due in One Year or Less	0
Due after One Year through Five Years	0
Due after Five Years through Ten Years	610
Due after Ten Years	9,259
Amortized Cost	9,869	24,699
Fair Value
Due in One Year or Less	0
Due after One Year through Five Years	0
Due after Five Years through Ten Years	603
Due after Ten Years	9,381
Total	9,984	24,338
Mortgage-backed securities: residential
Amortized Cost
Due in One Year or Less	0
Due after One Year through Five Years	2,258
Due after Five Years through Ten Years	193,771
Due after Ten Years	298,375
Amortized Cost	494,404	554,751
Fair Value
Due in One Year or Less	0
Due after One Year through Five Years	2,352
Due after Five Years through Ten Years	195,933
Due after Ten Years	301,551
Total	499,836	545,729
Amortized Cost
Due in One Year or Less	0
Due after One Year through Five Years	908
Due after Five Years through Ten Years	0
Due after Ten Years	35,206
Amortized Cost	36,114	43,381
Fair Value
Due in One Year or Less	0
Due after One Year through Five Years	942
Due after Five Years through Ten Years	0
Due after Ten Years	36,094
Total	37,036	$ 42,843
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	1,724
Amortized Cost	1,724
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	1,724
Total	$ 1,724

Investment Securities - FHLB, F

Investment Securities - FHLB, FRB, and other stock (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Investments, Debt and Equity Securities [Abstract]
FHLB stock	$ 17.3
Federal Reserve Bank Stock	51.7
Other stock	24.1
FHLB repurchases	$ 18.3	$ 24.9	$ 10.3

Loans - Composition of Loan Por

Loans - Composition of Loan Portfolio (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Loans Held for Investment
Gross loans held for investment	$ 8,731,898	$ 8,846,286
Deferred loan origination fees and discounts, net	(9,587)	(9,468)
Loans held for investment	8,722,311	8,836,818
Allowance for loan losses	(35,698)	(36,072)	$ (28,936)	$ (21,296)
Loans held for investment, net	8,686,613	8,800,746
Less loans held for sale, net	1,672	5,719
Servicing rights retained from guaranteed portion of SBA loans sold	7,700	8,500
Unpaid principal balance for loans and participations serviced for others	633,800	635,300
Secured loans to one borrower, limit	563,400
Unsecured loans to one borrower, limit	338,000
Secured loans to one borrower, outstanding balance	126,300
Secured Debt
Loans Held for Investment
Secured loans to one borrower, outstanding balance	101,500
Unsecured Debt
Loans Held for Investment
Secured loans to one borrower, outstanding balance	24,800
SBA
Loans Held for Investment
Unpaid principal balance for loans and participations serviced for others	475,300	519,800
Business Loans
Loans Held for Investment
Gross loans held for investment	4,159,801	4,141,362
Business Loans | Commercial and industrial
Loans Held for Investment
Gross loans held for investment	1,265,185	1,364,423
Allowance for loan losses	(11,334)	(10,821)	(9,721)	(6,362)
Business Loans | Franchise
Loans Held for Investment
Gross loans held for investment	916,875	765,416
Allowance for loan losses	(6,408)	(6,500)	(5,797)	(3,845)
Business Loans | Commercial owner occupied
Loans Held for Investment
Gross loans held for investment	1,674,092	1,679,122
Allowance for loan losses	(1,923)	(1,386)	(767)	(1,193)
Business Loans | SBA
Loans Held for Investment
Gross loans held for investment	175,815	193,882
Allowance for loan losses	(4,479)	(4,288)	(2,890)	(1,039)
Business Loans | Agribusiness
Loans Held for Investment
Gross loans held for investment	127,834	138,519
Allowance for loan losses	(2,523)	(3,283)	(1,291)	0
Real Estate Loans
Loans Held for Investment
Gross loans held for investment	4,521,175	4,615,500
Real Estate Loans | Commercial non-owner occupied
Loans Held for Investment
Gross loans held for investment	2,072,374	2,003,174
Allowance for loan losses	(1,899)	(1,604)	(1,266)	(1,715)
Real Estate Loans | Multi-family
Loans Held for Investment
Gross loans held for investment	1,576,870	1,535,289
Allowance for loan losses	(729)	(725)	(607)	(2,927)
Real Estate Loans | One-to-four family
Loans Held for Investment
Gross loans held for investment	254,779	356,264
Allowance for loan losses	(655)	(805)	(803)	(365)
Real Estate Loans | Construction
Loans Held for Investment
Gross loans held for investment	410,065	523,643
Allowance for loan losses	(3,809)	(5,166)	(4,569)	(3,632)
Real Estate Loans | Farmland
Loans Held for Investment
Gross loans held for investment	175,997	150,502
Allowance for loan losses	(858)	(503)	(137)	0
Real Estate Loans | Land
Loans Held for Investment
Gross loans held for investment	31,090	46,628
Allowance for loan losses	(675)	(772)	(993)	(198)
Consumer Loans | Consumer loans
Loans Held for Investment
Gross loans held for investment	50,922	89,424
Allowance for loan losses	(406)	(219)	$ (95)	$ (20)
Consumer Loans | Purchase discounts
Loans Held for Investment
Gross loans held for investment	$ 40,700	$ 61,000

Loans - Internal risk grading s

Loans - Internal risk grading system (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)areagrade	Dec. 31, 2018USD ($)
Receivables [Abstract]
Number of areas where the entity's credit quality is maintained and credit risk managed | area	2
Number of Pass scale grades | grade	6
Credit Risk Grades
Gross loans	$ 8,733,570	$ 8,852,005
Pass
Credit Risk Grades
Gross loans	8,651,947	8,764,593
Special Mention
Credit Risk Grades
Gross loans	36,677	25,956
Substandard
Credit Risk Grades
Gross loans	44,946	61,456
Doubtful
Credit Risk Grades
Gross loans	0	0
Business Loans | Commercial and industrial
Credit Risk Grades
Gross loans	1,265,185	1,364,461
Business Loans | Franchise
Credit Risk Grades
Gross loans	916,875	765,416
Business Loans | Commercial owner occupied
Credit Risk Grades
Gross loans	1,674,092	1,679,122
Business Loans | SBA
Credit Risk Grades
Gross loans	177,487	198,201
Business Loans | Agribusiness
Credit Risk Grades
Gross loans	127,834
Business Loans | Warehouse Facilities
Credit Risk Grades
Gross loans		138,519
Business Loans | Pass | Commercial and industrial
Credit Risk Grades
Gross loans	1,236,073	1,340,322
Business Loans | Pass | Franchise
Credit Risk Grades
Gross loans	898,191	760,795
Business Loans | Pass | Commercial owner occupied
Credit Risk Grades
Gross loans	1,659,391	1,660,994
Business Loans | Pass | SBA
Credit Risk Grades
Gross loans	166,011	189,006
Business Loans | Pass | Agribusiness
Credit Risk Grades
Gross loans	123,338
Business Loans | Pass | Warehouse Facilities
Credit Risk Grades
Gross loans		125,355
Business Loans | Special Mention | Commercial and industrial
Credit Risk Grades
Gross loans	13,226	12,005
Business Loans | Special Mention | Franchise
Credit Risk Grades
Gross loans	7,851	4,431
Business Loans | Special Mention | Commercial owner occupied
Credit Risk Grades
Gross loans	11,167	1,580
Business Loans | Special Mention | SBA
Credit Risk Grades
Gross loans	3,255	2,289
Business Loans | Special Mention | Agribusiness
Credit Risk Grades
Gross loans	0
Business Loans | Special Mention | Warehouse Facilities
Credit Risk Grades
Gross loans		0
Business Loans | Substandard | Commercial and industrial
Credit Risk Grades
Gross loans	15,886	12,134
Business Loans | Substandard | Franchise
Credit Risk Grades
Gross loans	10,833	190
Business Loans | Substandard | Commercial owner occupied
Credit Risk Grades
Gross loans	3,534	16,548
Business Loans | Substandard | SBA
Credit Risk Grades
Gross loans	8,221	6,906
Business Loans | Substandard | Agribusiness
Credit Risk Grades
Gross loans	4,496
Business Loans | Substandard | Warehouse Facilities
Credit Risk Grades
Gross loans		13,164
Business Loans | Doubtful | Commercial and industrial
Credit Risk Grades
Gross loans	0	0
Business Loans | Doubtful | Franchise
Credit Risk Grades
Gross loans	0	0
Business Loans | Doubtful | Commercial owner occupied
Credit Risk Grades
Gross loans	0	0
Business Loans | Doubtful | SBA
Credit Risk Grades
Gross loans	0	0
Business Loans | Doubtful | Agribusiness
Credit Risk Grades
Gross loans	0
Business Loans | Doubtful | Warehouse Facilities
Credit Risk Grades
Gross loans		0
Real Estate Loans | Commercial non-owner occupied
Credit Risk Grades
Gross loans	2,072,374	2,004,536
Real Estate Loans | Multi-family
Credit Risk Grades
Gross loans	1,576,870	1,535,289
Real Estate Loans | One-to-four family
Credit Risk Grades
Gross loans	254,779	356,264
Real Estate Loans | Construction
Credit Risk Grades
Gross loans	410,065	523,643
Real Estate Loans | Farmland
Credit Risk Grades
Gross loans	175,997	150,502
Real Estate Loans | Land
Credit Risk Grades
Gross loans	31,090	46,628
Real Estate Loans | Pass | Commercial non-owner occupied
Credit Risk Grades
Gross loans	2,070,068	1,998,118
Real Estate Loans | Pass | Multi-family
Credit Risk Grades
Gross loans	1,576,654	1,530,567
Real Estate Loans | Pass | One-to-four family
Credit Risk Grades
Gross loans	254,218	350,083
Real Estate Loans | Pass | Construction
Credit Risk Grades
Gross loans	410,065	523,643
Real Estate Loans | Pass | Farmland
Credit Risk Grades
Gross loans	175,997	150,381
Real Estate Loans | Pass | Land
Credit Risk Grades
Gross loans	31,073	46,008
Real Estate Loans | Special Mention | Commercial non-owner occupied
Credit Risk Grades
Gross loans	1,178	731
Real Estate Loans | Special Mention | Multi-family
Credit Risk Grades
Gross loans	0	4,060
Real Estate Loans | Special Mention | One-to-four family
Credit Risk Grades
Gross loans	0	728
Real Estate Loans | Special Mention | Construction
Credit Risk Grades
Gross loans	0	0
Real Estate Loans | Special Mention | Farmland
Credit Risk Grades
Gross loans	0	0
Real Estate Loans | Special Mention | Land
Credit Risk Grades
Gross loans	0	132
Real Estate Loans | Substandard | Commercial non-owner occupied
Credit Risk Grades
Gross loans	1,128	5,687
Real Estate Loans | Substandard | Multi-family
Credit Risk Grades
Gross loans	216	662
Real Estate Loans | Substandard | One-to-four family
Credit Risk Grades
Gross loans	561	5,453
Real Estate Loans | Substandard | Construction
Credit Risk Grades
Gross loans	0	0
Real Estate Loans | Substandard | Farmland
Credit Risk Grades
Gross loans	0	121
Real Estate Loans | Substandard | Land
Credit Risk Grades
Gross loans	17	488
Real Estate Loans | Doubtful | Commercial non-owner occupied
Credit Risk Grades
Gross loans	0	0
Real Estate Loans | Doubtful | Multi-family
Credit Risk Grades
Gross loans	0	0
Real Estate Loans | Doubtful | One-to-four family
Credit Risk Grades
Gross loans	0	0
Real Estate Loans | Doubtful | Construction
Credit Risk Grades
Gross loans	0	0
Real Estate Loans | Doubtful | Farmland
Credit Risk Grades
Gross loans	0	0
Real Estate Loans | Doubtful | Land
Credit Risk Grades
Gross loans	0	0
Consumer Loans | Consumer loans
Credit Risk Grades
Gross loans	50,922	89,424
Consumer Loans | Pass | Consumer loans
Credit Risk Grades
Gross loans	50,868	89,321
Consumer Loans | Special Mention | Consumer loans
Credit Risk Grades
Gross loans	0	0
Consumer Loans | Substandard | Consumer loans
Credit Risk Grades
Gross loans	54	103
Consumer Loans | Doubtful | Consumer loans
Credit Risk Grades
Gross loans	$ 0	$ 0

Loans - Days past due and Non-a

Loans - Days past due and Non-accruing (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Other information concerning the credit quality
Total Gross Loans	$ 8,733,570	$ 8,852,005
Non-accruing	8,650	4,857
Current
Other information concerning the credit quality
Current	8,714,321	8,839,152
30-59
Other information concerning the credit quality
Days Past Due	2,106	7,046
60-89
Other information concerning the credit quality
Days Past Due	10,583	1,242
90
Other information concerning the credit quality
Days Past Due	6,560	4,565
Business Loans | Commercial and industrial
Other information concerning the credit quality
Total Gross Loans	1,265,185	1,364,461
Non-accruing	4,637	931
Business Loans | Franchise
Other information concerning the credit quality
Total Gross Loans	916,875	765,416
Non-accruing	0	190
Business Loans | Commercial owner occupied
Other information concerning the credit quality
Total Gross Loans	1,674,092	1,679,122
Non-accruing	0	599
Business Loans | SBA
Other information concerning the credit quality
Total Gross Loans	177,487	198,201
Non-accruing	2,519	2,739
Business Loans | Agribusiness
Other information concerning the credit quality
Total Gross Loans	127,834
Non-accruing	0
Business Loans | Warehouse Facilities
Other information concerning the credit quality
Total Gross Loans		138,519
Non-accruing		0
Business Loans | Current | Commercial and industrial
Other information concerning the credit quality
Current	1,260,940	1,362,017
Business Loans | Current | Franchise
Other information concerning the credit quality
Current	907,733	759,546
Business Loans | Current | Commercial owner occupied
Other information concerning the credit quality
Current	1,673,761	1,677,967
Business Loans | Current | SBA
Other information concerning the credit quality
Current	174,271	195,051
Business Loans | Current | Agribusiness
Other information concerning the credit quality
Current	127,834
Business Loans | Current | Warehouse Facilities
Other information concerning the credit quality
Current		138,519
Business Loans | 30-59 | Commercial and industrial
Other information concerning the credit quality
Days Past Due	422	309
Business Loans | 30-59 | Franchise
Other information concerning the credit quality
Days Past Due	0	5,680
Business Loans | 30-59 | Commercial owner occupied
Other information concerning the credit quality
Days Past Due	331	343
Business Loans | 30-59 | SBA
Other information concerning the credit quality
Days Past Due	169	524
Business Loans | 30-59 | Agribusiness
Other information concerning the credit quality
Days Past Due	0
Business Loans | 30-59 | Warehouse Facilities
Other information concerning the credit quality
Days Past Due		0
Business Loans | 60-89 | Commercial and industrial
Other information concerning the credit quality
Days Past Due	826	1,204
Business Loans | 60-89 | Franchise
Other information concerning the credit quality
Days Past Due	9,142	0
Business Loans | 60-89 | Commercial owner occupied
Other information concerning the credit quality
Days Past Due	0	0
Business Loans | 60-89 | SBA
Other information concerning the credit quality
Days Past Due	613	0
Business Loans | 60-89 | Agribusiness
Other information concerning the credit quality
Days Past Due	0
Business Loans | 60-89 | Warehouse Facilities
Other information concerning the credit quality
Days Past Due		0
Business Loans | 90 | Commercial and industrial
Other information concerning the credit quality
Days Past Due	2,997	931
Business Loans | 90 | Franchise
Other information concerning the credit quality
Days Past Due	0	190
Business Loans | 90 | Commercial owner occupied
Other information concerning the credit quality
Days Past Due	0	812
Business Loans | 90 | SBA
Other information concerning the credit quality
Days Past Due	2,434	2,626
Business Loans | 90 | Agribusiness
Other information concerning the credit quality
Days Past Due	0
Business Loans | 90 | Warehouse Facilities
Other information concerning the credit quality
Days Past Due		0
Real Estate Loans | Commercial non-owner occupied
Other information concerning the credit quality
Total Gross Loans	2,072,374	2,004,536
Non-accruing	1,128	0
Real Estate Loans | Multi-family
Other information concerning the credit quality
Total Gross Loans	1,576,870	1,535,289
Non-accruing	0	0
Real Estate Loans | One-to-four family
Other information concerning the credit quality
Total Gross Loans	254,779	356,264
Non-accruing	366	398
Real Estate Loans | Construction
Other information concerning the credit quality
Total Gross Loans	410,065	523,643
Non-accruing	0	0
Real Estate Loans | Farmland
Other information concerning the credit quality
Total Gross Loans	175,997	150,502
Non-accruing	0	0
Real Estate Loans | Land
Other information concerning the credit quality
Total Gross Loans	31,090	46,628
Non-accruing	0	0
Real Estate Loans | Current | Commercial non-owner occupied
Other information concerning the credit quality
Current	2,070,067	2,004,536
Real Estate Loans | Current | Multi-family
Other information concerning the credit quality
Current	1,576,870	1,535,275
Real Estate Loans | Current | One-to-four family
Other information concerning the credit quality
Current	254,779	356,219
Real Estate Loans | Current | Construction
Other information concerning the credit quality
Current	410,065	523,643
Real Estate Loans | Current | Farmland
Other information concerning the credit quality
Current	175,997	150,502
Real Estate Loans | Current | Land
Other information concerning the credit quality
Current	31,090	46,628
Real Estate Loans | 30-59 | Commercial non-owner occupied
Other information concerning the credit quality
Days Past Due	1,179	0
Real Estate Loans | 30-59 | Multi-family
Other information concerning the credit quality
Days Past Due	0	14
Real Estate Loans | 30-59 | One-to-four family
Other information concerning the credit quality
Days Past Due	0	30
Real Estate Loans | 30-59 | Construction
Other information concerning the credit quality
Days Past Due	0	0
Real Estate Loans | 30-59 | Farmland
Other information concerning the credit quality
Days Past Due	0	0
Real Estate Loans | 30-59 | Land
Other information concerning the credit quality
Days Past Due	0	0
Real Estate Loans | 60-89 | Commercial non-owner occupied
Other information concerning the credit quality
Days Past Due	0	0
Real Estate Loans | 60-89 | Multi-family
Other information concerning the credit quality
Days Past Due	0	0
Real Estate Loans | 60-89 | One-to-four family
Other information concerning the credit quality
Days Past Due	0	9
Real Estate Loans | 60-89 | Construction
Other information concerning the credit quality
Days Past Due	0	0
Real Estate Loans | 60-89 | Farmland
Other information concerning the credit quality
Days Past Due	0	0
Real Estate Loans | 60-89 | Land
Other information concerning the credit quality
Days Past Due	0	0
Real Estate Loans | 90 | Commercial non-owner occupied
Other information concerning the credit quality
Days Past Due	1,128	0
Real Estate Loans | 90 | Multi-family
Other information concerning the credit quality
Days Past Due	0	0
Real Estate Loans | 90 | One-to-four family
Other information concerning the credit quality
Days Past Due	0	6
Real Estate Loans | 90 | Construction
Other information concerning the credit quality
Days Past Due	0	0
Real Estate Loans | 90 | Farmland
Other information concerning the credit quality
Days Past Due	0	0
Real Estate Loans | 90 | Land
Other information concerning the credit quality
Days Past Due	0	0
Consumer Loans | Consumer loans
Other information concerning the credit quality
Total Gross Loans	50,922	89,424
Non-accruing	0	0
Consumer Loans | Current | Consumer loans
Other information concerning the credit quality
Current	50,914	89,249
Consumer Loans | 30-59 | Consumer loans
Other information concerning the credit quality
Days Past Due	5	146
Consumer Loans | 60-89 | Consumer loans
Other information concerning the credit quality
Days Past Due	2	29
Consumer Loans | 90 | Consumer loans
Other information concerning the credit quality
Days Past Due	$ 1	$ 0

Loans - Purchased Credit Impair

Loans - Purchased Credit Impaired Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Business Loans | Commercial and industrial
Loans Held for Investment
Total purchase credit impaired	$ 7,755	$ 1,071	$ 1,585
Business Loans | Commercial owner occupied
Loans Held for Investment
Total purchase credit impaired	0	628	98
Business Loans | SBA
Loans Held for Investment
Total purchase credit impaired	4,070	7,598	4,329
Real Estate Loans | Commercial non-owner occupied
Loans Held for Investment
Total purchase credit impaired	1,184	0	0
Real Estate Loans | One-to-four family
Loans Held for Investment
Total purchase credit impaired	412	453	849
Real Estate Loans | Construction
Loans Held for Investment
Total purchase credit impaired			0
Real Estate Loans | Land
Loans Held for Investment
Total purchase credit impaired	0	0	$ 35
Consumer Loans | Consumer loans
Loans Held for Investment
Total purchase credit impaired	$ 0	$ 0

Loans - Investment in impaired

Loans - Investment in impaired loans (Details)	12 Months Ended
	Dec. 31, 2019USD ($)loan	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)
Impaired Loans
Investment in TDR	$ 3,000,000	$ 0
Number of TDR loans | loan	2
Nonaccruing loans	$ 8,700,000	4,900,000
Loans 90 days or more past due and still accruing	0	213,000
Consumer mortgage loans collateralized by residential real estate, foreclosure proceedings in process	0	0
Multi-family
Impaired Loans
Recorded Investment	22,989,000	12,458,000	$ 3,284,000
Unpaid Principal Balance	24,256,000	17,440,000	6,896,000
With Specific Allowance	0	1,038,000	97,000
Without Specific Allowance	22,989,000	11,420,000	3,187,000
Specific Allowance for Impaired Loans	0	584,000	55,000
Average Recorded Investment	17,938,000	7,562,000	2,309,000
Interest Income Recognized	552,000	36,000	0
Business Loans | Commercial and industrial
Impaired Loans
Recorded Investment	7,529,000	1,023,000	1,160,000
Unpaid Principal Balance	7,755,000	1,071,000	1,585,000
With Specific Allowance	0	550,000	0
Without Specific Allowance	7,529,000	473,000	1,160,000
Specific Allowance for Impaired Loans	0	118,000	0
Average Recorded Investment	3,649,000	1,173,000	441,000
Interest Income Recognized	22,000	1,000	0
Business Loans | Franchise
Impaired Loans
Recorded Investment	10,834,000	189,000
Unpaid Principal Balance	10,835,000	190,000
With Specific Allowance	0	0
Without Specific Allowance	10,834,000	189,000
Specific Allowance for Impaired Loans	0	0
Average Recorded Investment	3,079,000	119,000
Interest Income Recognized	151,000	0
Business Loans | Commercial owner occupied
Impaired Loans
Recorded Investment	0	599,000	97,000
Unpaid Principal Balance	0	628,000	98,000
With Specific Allowance	0	0	97,000
Without Specific Allowance	0	599,000	0
Specific Allowance for Impaired Loans	0	0	55,000
Average Recorded Investment	683,000	1,549,000	153,000
Interest Income Recognized	0	0	0
Business Loans | SBA
Impaired Loans
Recorded Investment	3,132,000	2,739,000	1,201,000
Unpaid Principal Balance	4,070,000	7,598,000	4,329,000
With Specific Allowance	0	488,000	0
Without Specific Allowance	3,132,000	2,251,000	1,201,000
Specific Allowance for Impaired Loans	0	466,000	0
Average Recorded Investment	2,996,000	1,814,000	434,000
Interest Income Recognized	16,000	0	0
Business Loans | Agribusiness
Impaired Loans
Recorded Investment	0	7,500,000
Unpaid Principal Balance	0	7,500,000
With Specific Allowance	0	0
Without Specific Allowance	0	7,500,000
Specific Allowance for Impaired Loans	0	0
Average Recorded Investment	6,602,000	625,000
Interest Income Recognized	363,000	35,000
Real Estate Loans | Commercial non-owner occupied
Impaired Loans
Recorded Investment	1,128,000	0	0
Unpaid Principal Balance	1,184,000	0	0
With Specific Allowance	0	0	0
Without Specific Allowance	1,128,000	0	0
Specific Allowance for Impaired Loans	0	0	0
Average Recorded Investment	411,000	538,000	86,000
Interest Income Recognized	0	0	0
Real Estate Loans | Multi-family
Impaired Loans
Recorded Investment		0
Unpaid Principal Balance		0
With Specific Allowance		0
Without Specific Allowance		0
Specific Allowance for Impaired Loans		0
Average Recorded Investment		500,000
Interest Income Recognized		0
Real Estate Loans | One-to-four family
Impaired Loans
Recorded Investment	366,000	408,000	817,000
Unpaid Principal Balance	412,000	453,000	849,000
With Specific Allowance	0	0	0
Without Specific Allowance	366,000	408,000	817,000
Specific Allowance for Impaired Loans	0	0	0
Average Recorded Investment	379,000	1,206,000	166,000
Interest Income Recognized	0	0	0
Real Estate Loans | Construction
Impaired Loans
Recorded Investment			0
Unpaid Principal Balance			0
With Specific Allowance			0
Without Specific Allowance			0
Specific Allowance for Impaired Loans			0
Average Recorded Investment			1,017,000
Interest Income Recognized			0
Real Estate Loans | Land
Impaired Loans
Recorded Investment	0	0	9,000
Unpaid Principal Balance	0	0	35,000
With Specific Allowance	0	0	0
Without Specific Allowance	0	0	9,000
Specific Allowance for Impaired Loans	0	0	0
Average Recorded Investment	120,000	5,000	12,000
Interest Income Recognized	0	0	$ 0
Consumer Loans | Consumer loans
Impaired Loans
Recorded Investment	0	0
Unpaid Principal Balance	0	0
With Specific Allowance	0	0
Without Specific Allowance	0	0
Specific Allowance for Impaired Loans	0	0
Average Recorded Investment	19,000	33,000
Interest Income Recognized	$ 0	$ 0

Allowance for Loan Losses (Deta

Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Allocation of allowance as well as the activity in allowance
Balance, at the beginning of the period				$ 36,072				$ 28,936	$ 36,072	$ 28,936	$ 21,296
Charge-offs									(7,853)	(1,955)	(1,362)
Recoveries									344	935	362
Provisions for (reduction in) loan losses	$ 2,297	$ 1,562	$ 334	1,526	$ 2,258	$ 1,981	$ 1,761	2,253	7,135	8,156	8,640
Balance, at the end of the period	35,698				36,072				35,698	36,072	28,936
Amount of allowance attributed to:
Specifically evaluated impaired loans	0				584				0	584	55
General portfolio allocation	35,698				35,488				35,698	35,488	28,881
Loans individually evaluated for impairment	22,989				12,458				$ 22,989	$ 12,458	$ 3,284
Specific reserves to total loans individually evaluated for impairment									0.00%	4.69%	1.67%
Loans collectively evaluated for impairment	8,708,909				8,833,828				$ 8,708,909	$ 8,833,828	$ 6,195,343
General reserves to total loans collectively evaluated for impairment									0.41%	0.40%	0.47%
Total gross loans	8,731,898				8,846,286				$ 8,731,898	$ 8,846,286	$ 6,198,627
Total allowance to gross loans									0.41%	0.41%	0.47%
Owner Occupied Commercial Real Estate Loans Commercial and Industrial Loans and Small Business Administration Loans
Allowance for Loan Losses
Period one considered for comparison of allowance for loan losses factor									1 year
Period considered for comparison of allowance for loan losses factor									1 year 7 months 6 days
Business Loans | Commercial and industrial
Allocation of allowance as well as the activity in allowance
Balance, at the beginning of the period				10,821				9,721	$ 10,821	$ 9,721	$ 6,362
Charge-offs									(2,318)	(1,411)	(1,344)
Recoveries									189	698	94
Provisions for (reduction in) loan losses									2,642	1,813	4,609
Balance, at the end of the period	11,334				10,821				11,334	10,821	9,721
Amount of allowance attributed to:
Specifically evaluated impaired loans	0				118				0	118	0
General portfolio allocation	11,334				10,703				11,334	10,703	9,721
Loans individually evaluated for impairment	7,529				1,023				$ 7,529	$ 1,023	$ 1,160
Specific reserves to total loans individually evaluated for impairment									0.00%	11.53%	0.00%
Loans collectively evaluated for impairment	1,257,656				1,363,400				$ 1,257,656	$ 1,363,400	$ 1,085,499
General reserves to total loans collectively evaluated for impairment									0.90%	0.79%	0.90%
Total gross loans	1,265,185				1,364,423				$ 1,265,185	$ 1,364,423	$ 1,086,659
Total allowance to gross loans									0.90%	0.79%	0.89%
Business Loans | Franchise
Allocation of allowance as well as the activity in allowance
Balance, at the beginning of the period				6,500				5,797	$ 6,500	$ 5,797	$ 3,845
Charge-offs									(2,531)	0	0
Recoveries									18	0	0
Provisions for (reduction in) loan losses									2,421	703	1,952
Balance, at the end of the period	6,408				6,500				6,408	6,500	5,797
Amount of allowance attributed to:
Specifically evaluated impaired loans	0				0				0	0	0
General portfolio allocation	6,408				6,500				6,408	6,500	5,797
Loans individually evaluated for impairment	10,834				189				$ 10,834	$ 189	$ 0
Specific reserves to total loans individually evaluated for impairment									0.00%	0.00%	0.00%
Loans collectively evaluated for impairment	906,041				765,227				$ 906,041	$ 765,227	$ 660,414
General reserves to total loans collectively evaluated for impairment									0.71%	0.85%	0.88%
Total gross loans	916,875				765,416				$ 916,875	$ 765,416	$ 660,414
Total allowance to gross loans									0.70%	0.85%	0.88%
Business Loans | Commercial owner occupied
Allocation of allowance as well as the activity in allowance
Balance, at the beginning of the period				1,386				767	$ 1,386	$ 767	$ 1,193
Charge-offs									(125)	(33)	0
Recoveries									46	47	105
Provisions for (reduction in) loan losses									616	605	(531)
Balance, at the end of the period	1,923				1,386				1,923	1,386	767
Amount of allowance attributed to:
Specifically evaluated impaired loans	0				0				0	0	55
General portfolio allocation	1,923				1,386				1,923	1,386	712
Loans individually evaluated for impairment	0				599				$ 0	$ 599	$ 97
Specific reserves to total loans individually evaluated for impairment									0.00%	0.00%	56.70%
Loans collectively evaluated for impairment	1,674,092				1,678,523				$ 1,674,092	$ 1,678,523	$ 1,289,116
General reserves to total loans collectively evaluated for impairment									0.11%	0.08%	0.06%
Total gross loans	1,674,092				1,679,122				$ 1,674,092	$ 1,679,122	$ 1,289,213
Total allowance to gross loans									0.11%	0.08%	0.06%
Business Loans | SBA
Allocation of allowance as well as the activity in allowance
Balance, at the beginning of the period				4,288				2,890	$ 4,288	$ 2,890	$ 1,039
Charge-offs									(2,238)	(102)	(8)
Recoveries									78	169	127
Provisions for (reduction in) loan losses									2,351	1,331	1,732
Balance, at the end of the period	4,479				4,288				4,479	4,288	2,890
Amount of allowance attributed to:
Specifically evaluated impaired loans	0				466				0	466	0
General portfolio allocation	4,479				3,822				4,479	3,822	2,890
Loans individually evaluated for impairment	3,132				2,739				$ 3,132	$ 2,739	$ 1,201
Specific reserves to total loans individually evaluated for impairment									0.00%	17.01%	0.00%
Loans collectively evaluated for impairment	172,683				191,143				$ 172,683	$ 191,143	$ 184,313
General reserves to total loans collectively evaluated for impairment									2.59%	2.00%	1.57%
Total gross loans	175,815				193,882				$ 175,815	$ 193,882	$ 185,514
Total allowance to gross loans									2.55%	2.21%	1.56%
Business Loans | Agribusiness
Allocation of allowance as well as the activity in allowance
Balance, at the beginning of the period				3,283				1,291	$ 3,283	$ 1,291	$ 0
Charge-offs									0	0	0
Recoveries									0	0	0
Provisions for (reduction in) loan losses									(760)	1,992	1,291
Balance, at the end of the period	2,523				3,283				2,523	3,283	1,291
Amount of allowance attributed to:
Specifically evaluated impaired loans	0				0				0	0	0
General portfolio allocation	2,523				3,283				2,523	3,283	1,291
Loans individually evaluated for impairment	0				7,500				$ 0	$ 7,500	$ 0
Specific reserves to total loans individually evaluated for impairment									0.00%	0.00%	0.00%
Loans collectively evaluated for impairment	127,834				131,019				$ 127,834	$ 131,019	$ 116,066
General reserves to total loans collectively evaluated for impairment									1.97%	2.51%	1.11%
Total gross loans	127,834				138,519				$ 127,834	$ 138,519	$ 116,066
Total allowance to gross loans									1.97%	2.37%	1.11%
Real Estate Loans | Commercial non-owner occupied
Allocation of allowance as well as the activity in allowance
Balance, at the beginning of the period				1,604				1,266	$ 1,604	$ 1,266	$ 1,715
Charge-offs									(625)	0	0
Recoveries									0	0	0
Provisions for (reduction in) loan losses									920	338	(449)
Balance, at the end of the period	1,899				1,604				1,899	1,604	1,266
Amount of allowance attributed to:
Specifically evaluated impaired loans	0				0				0	0	0
General portfolio allocation	1,899				1,604				1,899	1,604	1,266
Loans individually evaluated for impairment	1,128				0				$ 1,128	$ 0	$ 0
Specific reserves to total loans individually evaluated for impairment									0.00%	0.00%	0.00%
Loans collectively evaluated for impairment	2,071,246				2,003,174				$ 2,071,246	$ 2,003,174	$ 1,243,115
General reserves to total loans collectively evaluated for impairment									0.09%	0.08%	0.10%
Total gross loans	2,072,374				2,003,174				$ 2,072,374	$ 2,003,174	$ 1,243,115
Total allowance to gross loans									0.09%	0.08%	0.10%
Real Estate Loans | Multi-family
Allocation of allowance as well as the activity in allowance
Balance, at the beginning of the period				725				607	$ 725	$ 607	$ 2,927
Charge-offs									0	0	0
Recoveries									0	0	0
Provisions for (reduction in) loan losses									4	118	(2,320)
Balance, at the end of the period	729				725				729	725	607
Amount of allowance attributed to:
Specifically evaluated impaired loans	0				0				0	0	0
General portfolio allocation	729				725				729	725	607
Loans individually evaluated for impairment	0				0				$ 0	$ 0	$ 0
Specific reserves to total loans individually evaluated for impairment									0.00%	0.00%	0.00%
Loans collectively evaluated for impairment	1,576,870				1,535,289				$ 1,576,870	$ 1,535,289	$ 794,384
General reserves to total loans collectively evaluated for impairment									0.05%	0.05%	0.08%
Total gross loans	1,576,870				1,535,289				$ 1,576,870	$ 1,535,289	$ 794,384
Total allowance to gross loans									0.05%	0.05%	0.08%
Real Estate Loans | One-to-four family
Allocation of allowance as well as the activity in allowance
Balance, at the beginning of the period				805				803	$ 805	$ 803	$ 365
Charge-offs									0	0	(10)
Recoveries									2	13	35
Provisions for (reduction in) loan losses									(152)	(11)	413
Balance, at the end of the period	655				805				655	805	803
Amount of allowance attributed to:
Specifically evaluated impaired loans	0				0				0	0	0
General portfolio allocation	655				805				655	805	803
Loans individually evaluated for impairment	366				408				$ 366	$ 408	$ 817
Specific reserves to total loans individually evaluated for impairment									0.00%	0.00%	0.00%
Loans collectively evaluated for impairment	254,413				355,856				$ 254,413	$ 355,856	$ 270,077
General reserves to total loans collectively evaluated for impairment									0.26%	0.23%	0.30%
Total gross loans	254,779				356,264				$ 254,779	$ 356,264	$ 270,894
Total allowance to gross loans									0.26%	0.23%	0.30%
Real Estate Loans | Construction
Allocation of allowance as well as the activity in allowance
Balance, at the beginning of the period				5,166				4,569	$ 5,166	$ 4,569	$ 3,632
Charge-offs									0	0	0
Recoveries									0	0	0
Provisions for (reduction in) loan losses									(1,357)	597	937
Balance, at the end of the period	3,809				5,166				3,809	5,166	4,569
Amount of allowance attributed to:
Specifically evaluated impaired loans	0				0				0	0	0
General portfolio allocation	3,809				5,166				3,809	5,166	4,569
Loans individually evaluated for impairment	0				0				$ 0	$ 0	$ 0
Specific reserves to total loans individually evaluated for impairment									0.00%	0.00%	0.00%
Loans collectively evaluated for impairment	410,065				523,643				$ 410,065	$ 523,643	$ 282,811
General reserves to total loans collectively evaluated for impairment									0.93%	0.99%	1.62%
Total gross loans	410,065				523,643				$ 410,065	$ 523,643	$ 282,811
Total allowance to gross loans									0.93%	0.99%	1.62%
Real Estate Loans | Farmland
Allocation of allowance as well as the activity in allowance
Balance, at the beginning of the period				503				137	$ 503	$ 137	$ 0
Charge-offs									0	0	0
Recoveries									0	0	0
Provisions for (reduction in) loan losses									355	366	137
Balance, at the end of the period	858				503				858	503	137
Amount of allowance attributed to:
Specifically evaluated impaired loans	0				0				0	0	0
General portfolio allocation	858				503				858	503	137
Loans individually evaluated for impairment	0				0				$ 0	$ 0	$ 0
Specific reserves to total loans individually evaluated for impairment									0.00%	0.00%	0.00%
Loans collectively evaluated for impairment	175,997				150,502				$ 175,997	$ 150,502	$ 145,393
General reserves to total loans collectively evaluated for impairment									0.49%	0.33%	0.09%
Total gross loans	175,997				150,502				$ 175,997	$ 150,502	$ 145,393
Total allowance to gross loans									0.49%	0.33%	0.09%
Real Estate Loans | Land
Allocation of allowance as well as the activity in allowance
Balance, at the beginning of the period				772				993	$ 772	$ 993	$ 198
Charge-offs									0	0	0
Recoveries									0	0	0
Provisions for (reduction in) loan losses									(97)	(221)	795
Balance, at the end of the period	675				772				675	772	993
Amount of allowance attributed to:
Specifically evaluated impaired loans	0				0				0	0	0
General portfolio allocation	675				772				675	772	993
Loans individually evaluated for impairment	0				0				$ 0	$ 0	$ 9
Specific reserves to total loans individually evaluated for impairment									0.00%	0.00%	0.00%
Loans collectively evaluated for impairment	31,090				46,628				$ 31,090	$ 46,628	$ 31,224
General reserves to total loans collectively evaluated for impairment									2.17%	1.66%	3.18%
Total gross loans	31,090				46,628				$ 31,090	$ 46,628	$ 31,233
Total allowance to gross loans									2.17%	1.66%	3.18%
Consumer Loans | Consumer loans
Allocation of allowance as well as the activity in allowance
Balance, at the beginning of the period				$ 219				$ 95	$ 219	$ 95	$ 20
Charge-offs									(16)	(409)	0
Recoveries									11	8	1
Provisions for (reduction in) loan losses									192	525	74
Balance, at the end of the period	406				219				406	219	95
Amount of allowance attributed to:
Specifically evaluated impaired loans	0				0				0	0	0
General portfolio allocation	406				219				406	219	95
Loans individually evaluated for impairment	0				0				$ 0	$ 0	$ 0
Specific reserves to total loans individually evaluated for impairment									0.00%	0.00%	0.00%
Loans collectively evaluated for impairment	50,922				89,424				$ 50,922	$ 89,424	$ 92,931
General reserves to total loans collectively evaluated for impairment									0.80%	0.24%	0.10%
Total gross loans	$ 50,922				$ 89,424				$ 50,922	$ 89,424	$ 92,931
Total allowance to gross loans									0.80%	0.24%	0.10%

Other Real Estate Owned (Detail

Other Real Estate Owned (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Other Real Estate Owned
Balance, beginning of year	$ 147,000	$ 326,000	$ 460,000
Acquisitions	0	524,000	326,000
Foreclosures	644,000	15,000	0
Sales	(329,000)	(1,055,000)	(507,000)
Gain (loss) on sale	(20,000)	346,000	47,000
Write downs	(1,000)	(9,000)	0
Balance, end of year	441,000	147,000	$ 326,000
Consumer mortgage loans collateralized by residential real estate, foreclosure proceedings in process	$ 0	$ 0

Premises and Equipment (Details

Premises and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Premises and Equipment
Property and equipment	$ 90,445	$ 89,254
Less: accumulated depreciation	31,444	24,563
Total	59,001	64,691
Depreciation expense for premises and equipment	9,800	7,700	$ 4,900
Land
Premises and Equipment
Property and equipment	13,820	18,902
Premises
Premises and Equipment
Property and equipment	16,697	25,361
Leasehold improvements
Premises and Equipment
Property and equipment	25,884	15,824
Furniture, fixtures and equipment
Premises and Equipment
Property and equipment	33,871	28,994
Automobiles
Premises and Equipment
Property and equipment	$ 173	$ 173

Goodwill and Core Deposit Int_3

Goodwill and Core Deposit Intangibles - Narrative (Details) - USD ($)	3 Months Ended	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jul. 01, 2019	Nov. 01, 2018	Apr. 01, 2018	Nov. 01, 2017	Apr. 01, 2017	Dec. 31, 2016
Goodwill [Line Items]
Goodwill	$ 808,322,000	$ 808,322,000	$ 808,726,000	$ 493,329,000						$ 102,490,000
Goodwill adjustments		(404,000)	2,354,000	0
Goodwill acquired during the year		0	313,043,000	390,839,000
Impairment losses	0	0	0	0
Net CDI	83,312,000	83,312,000	100,556,000	$ 43,014,000
Estimated aggregate amortization expense
2020	15,400,000	15,400,000
2021	13,400,000	13,400,000
2022	11,700,000	11,700,000
2023	10,200,000	10,200,000
2024	$ 9,200,000	$ 9,200,000
Core Deposits | Minimum
Goodwill [Line Items]
Weighted average useful life (in years)		6 years
Core Deposits | Maximum
Goodwill [Line Items]
Weighted average useful life (in years)		11 years
Grandpoint Capital, Inc.
Goodwill [Line Items]
Goodwill					$ 312,639,000
Goodwill adjustments		$ 580,000
Goodwill acquired during the year		$ 312,600,000	313,000,000
Plaza Bancorp
Goodwill [Line Items]
Goodwill						$ 123,640,000		$ 124,000,000
Goodwill acquired during the year			1,800,000
Heritage Oaks Bank
Goodwill [Line Items]
Goodwill							$ 269,553,000		$ 270,000,000
Goodwill acquired during the year			$ 600,000

Goodwill and Core Deposit Int_4

Goodwill and Core Deposit Intangibles - Goodwill Roll Forward (Details) - USD ($)	3 Months Ended	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Goodwill [Roll Forward]
Balance, beginning of year		$ 808,726,000	$ 493,329,000	$ 102,490,000
Goodwill acquired during the year		0	313,043,000	390,839,000
Purchase accounting adjustments		(404,000)	2,354,000	0
Impairment losses	$ 0	0	0	0
Balance, end of year	808,322,000	808,322,000	808,726,000	493,329,000
Accumulated impairment losses at end of year	$ 0	$ 0	$ 0	$ 0

Goodwill and Core Deposit Int_5

Goodwill and Core Deposit Intangibles - CDI Roll Forward (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Gross Balance of CDI:
Balance, beginning of year	$ 125,945	$ 54,809	$ 15,102
Additions due to acquisitions	0	71,136	39,707
Balance, end of year	125,945	125,945	54,809
Accumulated amortization:
Balance, beginning of year	(25,389)	(11,795)	(5,651)
Amortization	(17,245)	(13,594)	(6,144)
Balance, end of year	(42,633)	(25,389)	(11,795)
Net CDI, end of year	$ 83,312	$ 100,556	$ 43,014

Bank Owned Life Insurance (Deta

Bank Owned Life Insurance (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Investments, All Other Investments [Abstract]
Bank owned life insurance	$ 113,376	$ 110,871
Income from bank owned life insurance, non-interest income	$ 3,500	$ 3,400	$ 2,300

Qualified Affordable Housing _3

Qualified Affordable Housing Project Investments (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Equity Method Investments and Joint Ventures [Abstract]
Period of tax credits	10 years
Company's next investment in qualified affordable housing projects	$ 53,900,000	$ 39,400,000
Total unfunded commitments related to investments in qualified affordable housing funds	21,414,000	13,400,000
2020	9,776,000
2021	6,596,000
2022	3,806,000
2023	187,000
2024	182,000
Thereafter	867,000
Total unfunded commitments	21,414,000	13,400,000
Tax credit and other tax benefits recognized	6,506,000	4,748,000	$ 1,719,000
Amortization of investments	5,527,000	4,574,000	1,599,000
Impairment losses related to LIHTC investments	$ 0	$ 0	$ 0

Deposit Accounts - Deposit acco

Deposit Accounts - Deposit accounts and weighted average interest rates (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Transaction accounts
Noninterest-bearing checking	$ 3,857,660	$ 3,495,737
Interest-bearing checking	586,019	526,088
Money market	3,171,164	2,975,578
Savings	235,824	250,271
Certificates of deposit accounts
250,000 or less	500,331	569,877
Greater than $250,000	547,511	840,800
Total certificates of deposit accounts	1,047,842	1,410,677
Total deposits	$ 8,898,509	$ 8,658,351
Transaction accounts
Noninterest-bearing checking (as a percent)	0.00%	0.00%
Interest-bearing checking (as a percent)	0.43%	0.38%
Money market (as a percent)	0.83%	0.89%
Savings (as a percent)	0.16%	0.14%
Certificates of deposit accounts
Less than $100,000 (as a percent)	1.59%	1.44%
Greater than $250,000 (as a percent)	1.77%	2.12%
Total certificates of deposit accounts (as a percent)	1.69%	1.84%
Total deposits (as a percent)	0.53%	0.63%

Deposit Accounts - The aggregat

Deposit Accounts - The aggregate annual maturities of certificates of deposit accounts (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Amount
Within 3 months	$ 571,143
4 to 6 months	240,132
7 to 12 months	138,515
13 to 24 months	76,617
25 to 36 months	11,182
37 to 60 months	9,644
Over 60 months	609
Total certificates of deposit accounts	$ 1,047,842	$ 1,410,677
Weighted Average Interest Rate
Within 3 months (as a percent)	1.70%
4 to 6 months (as a percent)	1.87%
7 to 12 months (as a percent)	1.46%
13 to 24 months (as a percent)	1.49%
25 to 36 months (as a percent)	1.24%
37 to 60 months (as a percent)	1.71%
Over 60 months (as a percent)	2.08%
Total certificates of deposit accounts (as a percent)	1.69%	1.84%

Deposit Accounts - Interest exp

Deposit Accounts - Interest expense on deposit accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Interest expense on deposit accounts
Checking accounts	$ 2,340	$ 1,167	$ 365
Money market accounts	28,279	19,567	6,720
Savings	382	357	251
Certificates of deposit accounts	27,296	16,562	6,035
Total	58,297	37,653	$ 13,371
Accrued interest on deposits	$ 590	$ 1,700

Federal Home Loan Bank Advanc_3

Federal Home Loan Bank Advances and Other Borrowings (Details)	12 Months Ended
	Dec. 31, 2019USD ($)bank	Jul. 01, 2019USD ($)	Dec. 31, 2018USD ($)	Jun. 30, 2017USD ($)
Federal Home Loan Bank Advances and Other Borrowings
Maximum percentage of assets up to which advances will be provided by FHLB	40.00%
Maximum credit line available from FHLB	$ 4,720,000,000
Additional available advances	2,240,000,000
Aggregate principal balance of real estate loans used to collateralize FHLB advances	3,900,000,000
Overnight FHLB advances	491,000,000		$ 506,000,000
Maximum amount outstanding in respect of term advances	26,000,000		161,500,000
Wells Fargo Bank | Line of Credit
Federal Home Loan Bank Advances and Other Borrowings
Unused facility				$ 15,000,000
Amount outstanding			$ 0
US Bank | Line of Credit
Federal Home Loan Bank Advances and Other Borrowings
Unused facility		$ 15,000,000
Amount outstanding	$ 0
Minimum
Federal Home Loan Bank Advances and Other Borrowings
Term advances, rate	1.78%
Maximum
Federal Home Loan Bank Advances and Other Borrowings
Term advances, rate	2.47%
Unsecured lines of credit
Federal Home Loan Bank Advances and Other Borrowings
Number of correspondent banks | bank	8
Unused facility	$ 193,000,000
Amount outstanding	0
Federal Reserve discount window
Federal Home Loan Bank Advances and Other Borrowings
Unused facility	$ 1,100,000

Federal Home Loan Bank Advanc_4

Federal Home Loan Bank Advances and Other Borrowings - Activities in advances from the FHLB (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Activities in advances from the FHLB
Average balance outstanding	$ 404,959	$ 529,278
Weighted average rate	2.43%	2.06%
Maximum amount outstanding at any month-end during the year	$ 1,091,596	$ 883,612
Balance outstanding at end of year	$ 517,026	$ 667,606
Weighted average interest rate at year-end	1.69%	2.51%

Federal Home Loan Bank Advanc_5

Federal Home Loan Bank Advances and Other Borrowings - Activities in other borrowings (Details) - Other Borrowings - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Average balance outstanding	$ 229	$ 29,193
Weighted average rate	0.63%	1.69%
Maximum amount outstanding at any month-end during the year	$ 10,000	$ 52,091
Balance outstanding at end of year	$ 0	$ 75
Weighted average interest rate at year-end	0.00%	0.01%

Subordinated Debentures (Detail

Subordinated Debentures (Details)

Oct. 07, 2019USD ($)

Sep. 16, 2019

Jul. 08, 2019

Jul. 01, 2018USD ($)

Nov. 01, 2017USD ($)note

Sep. 30, 2019USD ($)

May 31, 2019USD ($)

Mar. 31, 2004USD ($)

Dec. 31, 2019USD ($)note

Dec. 31, 2018USD ($)

Dec. 31, 2017USD ($)

Apr. 01, 2017USD ($)

Aug. 31, 2014USD ($)

Debt Instrument [Line Items]

Subordinated debentures

$ 215,145,000

$ 110,313,000

Increase to carrying value of subordinated debt

$ 104,800,000

Percentage increase to carrying value of subordinated debt

95.00%

Debt issued

$ 220,403,000

Redemption of aggregated amount

18,558,000

0

$ 0

Redemption of company capital instruments

$ 17,600,000

PPBI Trust I

Debt Instrument [Line Items]

Floating Rate Trust Preferred Securities issue amount

$ 10,000,000

Subordinated notes

Debt Instrument [Line Items]

Number of subordinated debt instruments | note

3

Subordinated debentures

$ 207,187,000

$ 84,470,000

Weighted average interest rate at year-end

5.37%

6.04%

Debt issued

$ 210,000,000

Subordinated notes | Mission Community Capital Trust I

Debt Instrument [Line Items]

Redemption of aggregated amount

$ 3,100,000

Long-term Debt

$ 3,100,000

Effective rate (as a percent)

5.25%

Loss on early debt extinguishment

$ (290,000)

Subordinated notes | Santa Lucia Bancorp (CA) Capital Trust

Debt Instrument [Line Items]

Subordinated debentures

$ 3,900,000

5,200,000

Effective rate (as a percent)

3.47%

Purchase accounting fair value adjustments

$ (1,300,000)

Subordinated notes | Heritage Oaks Bank

Debt Instrument [Line Items]

Long-term Debt

$ 5,200,000

Effective rate (as a percent)

3.82%

Purchase accounting fair value adjustments

$ (1,200,000)

Debt assumed in acquisition

4,100,000

Subordinated notes | Grandpoint Capital, Inc.

Debt Instrument [Line Items]

Redemption of aggregated amount

$ 5,200,000

Effective rate (as a percent)

5.36%

Debt assumed in acquisition

$ 5,200,000

Loss on early debt extinguishment

$ (214,000)

Subordinated notes | Plaza Bancorp

Debt Instrument [Line Items]

Purchase accounting fair value adjustments

133,000

Carrying value of subordinated notes

25,100,000

Subordinated notes | PPBI Trust I

Debt Instrument [Line Items]

Debt issued

$ 10,300,000

Redemption of aggregated amount

$ 10,400,000

Effective rate (as a percent)

5.35%

Minority interest purchased (as a percent)

3.00%

Amount of minority interest purchased

$ 310,000

Subordinated notes | LIBOR | Mission Community Capital Trust I

Debt Instrument [Line Items]

Floating interest rate, basis points added to base rate (as a percent)

2.95%

Subordinated notes | LIBOR | Santa Lucia Bancorp (CA) Capital Trust

Debt Instrument [Line Items]

Floating interest rate, basis points added to base rate (as a percent)

1.48%

Subordinated notes | LIBOR | Heritage Oaks Bank

Debt Instrument [Line Items]

Floating interest rate, basis points added to base rate (as a percent)

1.72%

Subordinated notes | LIBOR | Grandpoint Capital, Inc.

Debt Instrument [Line Items]

Floating interest rate, basis points added to base rate (as a percent)

2.95%

Subordinated notes | LIBOR | PPBI Trust I

Debt Instrument [Line Items]

Floating interest rate, basis points added to base rate (as a percent)

2.75%

Subordinated notes | Subordinated notes due 2029, 4.875% per annum until May 15, 2024, 3-month LIBOR 2.5% thereafter

Debt Instrument [Line Items]

Subordinated debentures

$ 122,622,000

$ 0

Debt issued

$ 125,000,000

125,000,000

Redemption of aggregated amount

$ 18,600,000

Fixed interest rate (as a percent)

4.875%

4.875%

Unamortized debt issuance costs

$ 2,400,000

Long-term Debt

$ 122,600,000

Public offering price

100.00%

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]

Floating interest rate, basis points added to base rate (as a percent)

2.50%

2.50%

Subordinated debt

Debt Instrument [Line Items]

Number of subordinated debt instruments | note

2

Subordinated debentures

$ 7,958,000

25,843,000

Debt issued

10,403,000

Subordinated debt | Mission Community Capital Trust I

Debt Instrument [Line Items]

Subordinated debentures

0

2,787,000

Subordinated debt | Santa Lucia Bancorp (CA) Capital Trust

Debt Instrument [Line Items]

Subordinated debentures

3,904,000

3,829,000

Debt issued

$ 5,155,000

Effective rate (as a percent)

3.47%

Subordinated debt | PPBI Trust I

Debt Instrument [Line Items]

Subordinated debentures

$ 0

$ 10,310,000

Subordinated debt | LIBOR | Mission Community Capital Trust I

Debt Instrument [Line Items]

Floating interest rate, basis points added to base rate (as a percent)

2.95%

Subordinated debt | LIBOR | Santa Lucia Bancorp (CA) Capital Trust

Debt Instrument [Line Items]

Floating interest rate, basis points added to base rate (as a percent)

1.48%

Subordinated debt | LIBOR | Heritage Oaks Bank

Debt Instrument [Line Items]

Floating interest rate, basis points added to base rate (as a percent)

1.72%

Subordinated debt | LIBOR | PPBI Trust I

Debt Instrument [Line Items]

Floating interest rate, basis points added to base rate (as a percent)

2.75%

Subordinated notes due 2024, 5.75% per annum

Debt Instrument [Line Items]

Subordinated debentures

$ 59,400,000

Debt issued

$ 60,000,000

Fixed interest rate (as a percent)

5.75%

Unamortized debt issuance costs

$ 568,000

Subordinated notes due 2025, 7.125% per annum | Plaza Bancorp

Debt Instrument [Line Items]

Fixed interest rate (as a percent)

7.125%

Debt assumed in acquisition

$ 25,000,000

Number of subordinated notes assumed | note

3

Redemption price (as a percent)

103.00%

Redemption price, subsequent reduction (as a percent)

0.50%

Subordinated Debentures - Sched

Subordinated Debentures - Schedule of outstanding subordinated debentures (Details) - USD ($) $ in Thousands	Oct. 07, 2019	Jul. 08, 2019	May 31, 2019	Dec. 31, 2019	Dec. 31, 2018	Apr. 01, 2017	Mar. 31, 2004
Debt Instrument [Line Items]
Current Principal Balance				$ 220,403
Subordinated debentures				215,145	$ 110,313
Subordinated notes
Debt Instrument [Line Items]
Current Principal Balance				210,000
Subordinated debentures				$ 207,187	84,470
Subordinated notes | Santa Lucia Bancorp (CA) Capital Trust
Debt Instrument [Line Items]
Current Interest Rate				3.47%
Subordinated debentures				$ 3,900		$ 5,200
Subordinated notes | Santa Lucia Bancorp (CA) Capital Trust | LIBOR
Debt Instrument [Line Items]
Variable rate				1.48%
Subordinated notes | Mission Community Capital Trust I
Debt Instrument [Line Items]
Current Interest Rate	5.25%
Subordinated notes | Mission Community Capital Trust I | LIBOR
Debt Instrument [Line Items]
Variable rate	2.95%
Subordinated notes | PPBI Trust I
Debt Instrument [Line Items]
Current Interest Rate		5.35%
Current Principal Balance							$ 10,300
Subordinated notes | PPBI Trust I | LIBOR
Debt Instrument [Line Items]
Variable rate		2.75%
Subordinated notes | Subordinated notes due 2024, 5.75% per annum
Debt Instrument [Line Items]
Current Interest Rate				5.75%
Current Principal Balance				$ 60,000
Subordinated debentures				$ 59,432	59,312
Subordinated notes | Subordinated notes due 2029, 4.875% per annum until May 15, 2024, 3-month LIBOR 2.5% thereafter
Debt Instrument [Line Items]
Current Interest Rate			4.875%	4.875%
Current Principal Balance			$ 125,000	$ 125,000
Subordinated debentures				$ 122,622	0
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%	2.50%
Subordinated notes | Subordinated notes due 2025, 7.125% per annum
Debt Instrument [Line Items]
Current Interest Rate				7.125%
Current Principal Balance				$ 25,000
Subordinated debentures				25,133	25,158
Subordinated debt
Debt Instrument [Line Items]
Current Principal Balance				10,403
Subordinated debentures				$ 7,958	25,843
Subordinated debt | Heritage Oaks Bank
Debt Instrument [Line Items]
Current Interest Rate				3.82%
Current Principal Balance				$ 5,248
Subordinated debentures				$ 4,054	3,986
Subordinated debt | Santa Lucia Bancorp (CA) Capital Trust
Debt Instrument [Line Items]
Current Interest Rate				3.47%
Current Principal Balance				$ 5,155
Subordinated debentures				$ 3,904	3,829
Subordinated debt | Santa Lucia Bancorp (CA) Capital Trust | LIBOR
Debt Instrument [Line Items]
Variable rate				1.48%
Subordinated debt | Mission Community Capital Trust I
Debt Instrument [Line Items]
Subordinated debentures				$ 0	2,787
Subordinated debt | Mission Community Capital Trust I | LIBOR
Debt Instrument [Line Items]
Variable rate				2.95%
Subordinated debt | First Commerce Bancorp Statutory Trust I
Debt Instrument [Line Items]
Subordinated debentures				$ 0	4,931
Subordinated debt | First Commerce Bancorp Statutory Trust I | LIBOR
Debt Instrument [Line Items]
Variable rate				2.95%
Subordinated debt | PPBI Trust I
Debt Instrument [Line Items]
Subordinated debentures				$ 0	$ 10,310
Subordinated debt | PPBI Trust I | LIBOR
Debt Instrument [Line Items]
Variable rate				2.75%

Subordinated Debentures - Activ

Subordinated Debentures - Activities for our subordinated debentures (Details) - Subordinated notes - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Average balance outstanding	$ 183,383	$ 107,732
Weighted average rate	5.82%	6.23%
Maximum amount outstanding at any month-end during the year	$ 233,119	$ 110,313
Balance outstanding at end of year	$ 215,145	$ 110,313
Weighted average interest rate at year-end	5.37%	6.04%

Income Taxes - Total income tax

Income Taxes - Total income tax provision (Details) - USD ($) $ in Thousands	3 Months Ended									12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current income tax provision:
Federal										$ 34,124	$ 19,787	$ 18,644
State										16,415	13,178	7,062
Total current income tax provision										50,539	32,965	25,706
Deferred income tax provision (benefit):
Federal										4,645	8,142	8,294
Effect of the Tax Act									$ 5,600	0	(1,441)	5,633
State										2,851	2,574	2,493
Total deferred income tax provision (benefit)										7,496	9,275	16,420
Total income tax provision	$ 13,109	$ 15,492	$ 14,168	$ 15,266	$ 15,376	$ 7,798	$ 10,182	$ 8,884		$ 58,035	$ 42,240	$ 42,126

Income Taxes - Reconciliation f

Income Taxes - Reconciliation from statutory federal income taxes (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Reconciliation from statutory federal income taxes to the company's effective income taxes
Statutory federal income tax provision									$ 45,729	$ 34,803	$ 35,778
State taxes, net of federal income tax effect									15,764	12,724	6,720
Cash surrender life insurance									(565)	(582)	(645)
Tax exempt interest									(1,503)	(1,135)	(1,660)
Non-deductible merger costs									0	375	824
LIHTC investments									(1,570)	(761)	(1,031)
Effect of the Tax Act									0	(1,441)	5,633
Excess tax benefit of stock-based compensation									(728)	(1,811)	(1,995)
Prior year true-up									0	0	(1,108)
Other									908	68	(390)
Total income tax provision	$ 13,109	$ 15,492	$ 14,168	$ 15,266	$ 15,376	$ 7,798	$ 10,182	$ 8,884	$ 58,035	$ 42,240	$ 42,126

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) - USD ($)	3 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Taxes
Effect of Tax Act	$ 5,600,000	$ 0	$ (1,441,000)	$ 5,633,000
Valuation allowance		$ 0	0
Minimum cumulative change in ownership that could result in a Section 382 ownership change (as a percent)		50.00%
Amount of unrecognized tax benefits	$ 2,906,000	$ 2,906,000	2,906,000	$ 2,906,000
Tax benefits that would impact the effective tax rate		0
Interest and penalties accrued related to unrecognized tax benefits		424,000,000	$ 246,000,000
Federal income tax purpose
Income Taxes
Net operating loss carryforward		20,200,000
California franchise tax purpose
Income Taxes
Net operating loss carryforward		$ 6,900,000

Income Taxes - Deferred tax ass

Income Taxes - Deferred tax assets (liabilities) (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets:
Accrued expenses	$ 2,126,000	$ 3,239,000
Net operating loss	4,765,000	6,115,000
Allowance for loan losses, net of bad debt charge-offs	10,415,000	10,709,000
Deferred compensation	3,616,000	3,649,000
State taxes	3,746,000	2,707,000
Loan discount	11,634,000	17,677,000
Stock-based compensation	3,535,000	3,234,000
Unrealized loss on available for sale securities	0	2,308,000
Operating lease liabilities	13,334,000
AMT credit and other state tax credit carryovers	416,000	96,000
Total deferred tax assets	53,587,000	49,734,000
Deferred tax liabilities:
Operating lease right-of-use assets	(12,382,000)
Deferred FDIC gain	(228,000)	(364,000)
Core deposit intangibles	(22,415,000)	(27,388,000)
Loan origination costs	(4,828,000)	(4,760,000)
Depreciation	(1,814,000)	(1,192,000)
Unrealized gain on available for sale securities	(8,639,000)	0
Other	(4,652,000)	(403,000)
Total deferred tax liabilities	(54,958,000)	(34,107,000)
Valuation allowance	0	0
Net deferred tax (liabilities) asset	$ (1,371,000)
Net deferred tax (liabilities) asset		$ 15,627,000

Income Taxes - Unrecognized Tax

Income Taxes - Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance at January 1	$ 2,906	$ 2,906
Additions based on tax positions related to prior years	0	0
Balance at December 31	$ 2,906	$ 2,906

Commitments, Contingencies an_2

Commitments, Contingencies and Concentrations of Risk (Details) - Employment Agreements	12 Months Ended
	Dec. 31, 2019
CEO
Employment Agreements
Term of agreements (in years)	3 years
Chief Operating Officer
Employment Agreements
Term of agreements (in years)	1 year
Chief Financial Officer
Employment Agreements
Term of agreements (in years)	1 year
Chief Risk Officer
Employment Agreements
Term of agreements (in years)	1 year
Chief Innovation Officer
Employment Agreements
Term of agreements (in years)	1 year

Benefit Plans - 401(k) Plan (De

Benefit Plans - 401(k) Plan (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Employer's match of employees' contributions of the first 3% of eligible compensation (as a percent)	100.00%	100.00%	100.00%
Percentage of eligible compensation, matched 100% by employer	3.00%	3.00%	3.00%
Employer's match of employees' contributions of the next 2% of eligible compensation (as a percent)	50.00%	50.00%	50.00%
Percentage of eligible compensation, matched 50% by employer	2.00%	2.00%	2.00%
Contributions made	$ 2.9	$ 2.5	$ 1.4
Minimum
Defined Benefit Plan Disclosure [Line Items]
Employee contribution, as a percentage of compensation	1.00%
Maximum
Defined Benefit Plan Disclosure [Line Items]
Employee contribution, as a percentage of compensation	99.00%

Benefit Plans - Long-Term Incen

Benefit Plans - Long-Term Incentive Plan (Details)	1 Months Ended		12 Months Ended
	May 31, 2012shares	May 31, 2004shares	Dec. 31, 2019shares	May 31, 2017shares	May 31, 2015shares	May 31, 2014shares
2004 Long-Term Incentive Plan
Share based plans
Shares authorized		525,500
Term of plan (in years)		10 years
Vesting percentage per year		33.30%
Number of options outstanding (in shares)			3,000
Granted (in shares)			0
2012 Plan
Share based plans
Shares authorized	620,000			3,580,000		800,000
Term of plan (in years)	10 years
Number of options outstanding (in shares)			399,466
Granted (in shares)			2,879,949
2012 Plan | Minimum
Share based plans
Award vesting period (in years)	1 year
2012 Plan | Maximum
Share based plans
Award vesting period (in years)	3 years
2014 Plan
Share based plans
Shares authorized						1,420,000
2017 Plan
Share based plans
Shares authorized				5,000,000
2015 Equity Based Compensation Plan
Share based plans
Shares authorized			250,000		630,473
Shares issued ratio, actual number of shares			2
Number of options outstanding (in shares)			24,961
Granted (in shares)			655,429
2005 Long-Term Incentive Plan
Share based plans
Number of options outstanding (in shares)			25,677
Granted (in shares)			0

Benefit Plans - Option Plans (D

Benefit Plans - Option Plans (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Additional disclosure
Intrinsic value	$ 4,200	$ 8,400	$ 7,700
Compensation expense	$ 132	$ 571	$ 927
Stock option
Number of Stock Options Outstanding
Options outstanding at the beginning of the year (in shares)	681,933
Granted (in shares)	0
Exercised (in shares)	(220,118)
Forfeited and expired (in shares)	(8,711)
Options outstanding at the end of the year (in shares)	453,104	681,933
Vested at the end of the year (in shares)	451,424
Weighted Average Exercise Price Per Share
Options outstanding at the beginning of the year (in dollars per share)	$ 15.26
Granted (in dollars per share)	0
Exercised (in dollars per share)	13.17
Forfeited and expired (in dollars per share)	15.84
Options outstanding at the end of the year (in dollars per share)	16.26	$ 15.26
Vested at the end of the year (in dollars per shares)	$ 16.24
Weighted average remaining contractual life
Outstanding at the end of the year	4 years 7 months 28 days
Vested at the end of the year	4 years 7 months 28 days
Additional disclosure
Aggregate intrinsic value, outstanding	$ 7,401
Aggregate Intrinsic value, vested and expected to vest	7,382
Unrecognized compensation expense	$ 8

Benefit Plans - Restricted Stoc

Benefit Plans - Restricted Stock Awards and Restricted Stock Units (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Weighted Average Grant-Date Fair Value Per Share
Compensation expense	$ 132	$ 571	$ 927
Restricted Stock
Shares
Unvested at the beginning of the year (in shares)	636,077
Granted (in shares)	423,823
Vested (in shares)	(287,754)
Forfeited (in shares)	(32,213)
Unvested at the end of the year (in shares)	739,933	636,077
Weighted Average Grant-Date Fair Value Per Share
Unvested at the beginning of the year (in dollars per share)	$ 35.98
Granted (in dollars per share)	29.92
Vested (in dollars per share)	29.43
Forfeited (in dollars per share)	34.76
Unvested at the end of the year (in dollars per share)	$ 35.11	$ 35.98
Compensation expense	$ 10,400	$ 8,500	$ 5,000
Grant date fair value	12,700
Unrecognized compensation expense	$ 14,200
Weighted-average period of recognition	1 year 9 months 21 days

Benefit Plans - Other Benefits

Benefit Plans - Other Benefits (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Deferred compensation plan | Executive Officer
Benefit Plans
Amounts recorded as liability		$ 10,900,000	$ 8,400,000
SERP | Plaza Bancorp
Benefit Plans
Deferred compensation liability	$ 1,800,000	1,600,000
SERP | Deferred compensation plan | Executive Officer
Benefit Plans
Amounts expensed	674,000	827,000	$ 721,000
Amounts recorded as liability	$ 10,800,000	$ 10,900,000

Financial Instruments with Of_2

Financial Instruments with Off-Balance Sheet Risk (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Undisbursed loans and unused lines of credit
Financial Instruments with Off-Balance Sheet Risk
Allowance for credit losses	$ 3.3	$ 4.6
Commitments to extend credit
Financial Instruments with Off-Balance Sheet Risk
Financial instruments with off-balance sheet risk	1,580	$ 1,830
Undisbursed Commitments For C&I Loans
Financial Instruments with Off-Balance Sheet Risk
Financial instruments with off-balance sheet risk	$ 1,100

Fair Value of Financial Instr_3

Fair Value of Financial Instruments - Assets measured at fair value on a recurring basis (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Level 1
Financial assets
Derivative asset	$ 0	$ 0
Financial liabilities
Derivative liability	0	0
Level 2
Financial assets
Derivative asset	2,103	1,681
Financial liabilities
Derivative liability	2,103	1,681
Level 3
Financial assets
Derivative asset	0	0
Financial liabilities
Derivative liability	0	0
Recurring basis
Financial assets
Total securities available for sale:	1,368,384	1,103,222
Derivative asset	2,103	1,681
Financial liabilities
Derivative liability	2,103	1,681
Recurring basis | Level 1
Financial assets
Total securities available for sale:	0	0
Derivative asset	0	0
Financial liabilities
Derivative liability	0	0
Recurring basis | Level 2
Financial assets
Total securities available for sale:	1,368,384	1,103,222
Derivative asset	2,103	1,681
Financial liabilities
Derivative liability	2,103	1,681
Recurring basis | Level 3
Financial assets
Total securities available for sale:	0	0
Derivative asset	0	0
Financial liabilities
Derivative liability	0	0
Recurring basis | U.S. Treasury
Financial assets
Total securities available for sale:	63,555	60,912
Recurring basis | U.S. Treasury | Level 1
Financial assets
Total securities available for sale:	0	0
Recurring basis | U.S. Treasury | Level 2
Financial assets
Total securities available for sale:	63,555	60,912
Recurring basis | U.S. Treasury | Level 3
Financial assets
Total securities available for sale:	0	0
Recurring basis | Agency
Financial assets
Total securities available for sale:	246,358	130,070
Recurring basis | Agency | Level 1
Financial assets
Total securities available for sale:	0	0
Recurring basis | Agency | Level 2
Financial assets
Total securities available for sale:	246,358	130,070
Recurring basis | Agency | Level 3
Financial assets
Total securities available for sale:	0	0
Recurring basis | Corporate
Financial assets
Total securities available for sale:	151,353	103,543
Recurring basis | Corporate | Level 1
Financial assets
Total securities available for sale:	0	0
Recurring basis | Corporate | Level 2
Financial assets
Total securities available for sale:	151,353	103,543
Recurring basis | Corporate | Level 3
Financial assets
Total securities available for sale:	0	0
Recurring basis | Municipal bonds
Financial assets
Total securities available for sale:	397,298	238,630
Recurring basis | Municipal bonds | Level 1
Financial assets
Total securities available for sale:	0	0
Recurring basis | Municipal bonds | Level 2
Financial assets
Total securities available for sale:	397,298	238,630
Recurring basis | Municipal bonds | Level 3
Financial assets
Total securities available for sale:	0	0
Recurring basis | Collateralized mortgage obligation: residential
Financial assets
Total securities available for sale:	9,984	24,338
Recurring basis | Collateralized mortgage obligation: residential | Level 1
Financial assets
Total securities available for sale:	0	0
Recurring basis | Collateralized mortgage obligation: residential | Level 2
Financial assets
Total securities available for sale:	9,984	24,338
Recurring basis | Collateralized mortgage obligation: residential | Level 3
Financial assets
Total securities available for sale:	0	0
Recurring basis | Mortgage-backed securities: residential
Financial assets
Total securities available for sale:	499,836	545,729
Recurring basis | Mortgage-backed securities: residential | Level 1
Financial assets
Total securities available for sale:	0	0
Recurring basis | Mortgage-backed securities: residential | Level 2
Financial assets
Total securities available for sale:	499,836	545,729
Recurring basis | Mortgage-backed securities: residential | Level 3
Financial assets
Total securities available for sale:	$ 0	$ 0

Fair Value of Financial Instr_4

Fair Value of Financial Instruments - Narrative (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Fair Value Disclosures [Abstract]
Specifically evaluated impaired loans	$ 0	$ 584	$ 55

Fair Value of Financial Instr_5

Fair Value of Financial Instruments - Noncrecurring Basis (Details) - Fair Value, Nonrecurring - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	$ 2,257	$ 1,445
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0	0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0	0
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	$ 2,257	$ 1,445

Fair Value of Financial Instr_6

Fair Value of Financial Instruments - Fair value estimates (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Assets:
Investments held-to-maturity	$ 38,760	$ 44,672
Investment securities available-for-sale	1,368,384	1,103,222
Accrued interest receivable	39,442	37,837
Liabilities:
FHLB advances	517,026	667,606
Level 1
Assets:
Cash and cash equivalents	326,850	203,406
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 asset	0	0
Accrued interest receivable	39,442	37,837
Liabilities:
Deposit accounts	7,850,667	7,247,673
FHLB advances	0	0
Other borrowings	0	0
Subordinated debentures	0	0
Derivative liability	0	0
Accrued interest payable	2,686	3,255
Level 2
Assets:
Cash and cash equivalents	0	0
Investments held-to-maturity	38,760	44,672
Investment securities available-for-sale	1,368,384	1,103,222
Loans held for sale	1,821	6,072
Loans held for investment, net	0	0
Derivative asset	2,103	1,681
Accrued interest receivable	0	0
Liabilities:
Deposit accounts	1,048,583	1,403,524
FHLB advances	517,291	666,864
Other borrowings	0	75
Subordinated debentures	237,001	115,613
Derivative liability	2,103	1,681
Accrued interest payable	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	8,691,019	8,697,594
Derivative asset	0	0
Accrued interest receivable	0	0
Liabilities:
Deposit accounts	0	0
FHLB advances	0	0
Other borrowings	0	0
Subordinated debentures	0	0
Derivative liability	0	0
Accrued interest payable	0	0
Carrying Amount
Assets:
Cash and cash equivalents	326,850	203,406
Investments held-to-maturity	37,838	45,210
Investment securities available-for-sale	1,368,384	1,103,222
Loans held for sale	1,672	5,719
Loans held for investment, net	8,722,311	8,836,818
Derivative asset	2,103	1,929
Accrued interest receivable	39,442	37,837
Liabilities:
Deposit accounts	8,898,509	8,658,351
FHLB advances	517,026	667,606
Other borrowings	0	75
Subordinated debentures	215,145	110,313
Derivative liability	2,103	1,929
Accrued interest payable	2,686	3,255
Estimated Fair Value
Assets:
Cash and cash equivalents	326,850	203,406
Investments held-to-maturity	38,760	44,672
Investment securities available-for-sale	1,368,384	1,103,222
Loans held for sale	1,821	6,072
Loans held for investment, net	8,691,019	8,697,594
Derivative asset	2,103	1,681
Accrued interest receivable	39,442	37,837
Liabilities:
Deposit accounts	8,899,250	8,651,197
FHLB advances	517,291	666,864
Other borrowings	0	75
Subordinated debentures	237,001	115,613
Derivative liability	2,103	1,681
Accrued interest payable	2,686	3,255
Bank Time Deposits | Level 1
Assets:
Cash and cash equivalents	2,708	6,143
Bank Time Deposits | Level 2
Assets:
Cash and cash equivalents	0	0
Bank Time Deposits | Level 3
Assets:
Cash and cash equivalents	0	0
Bank Time Deposits | Carrying Amount
Assets:
Cash and cash equivalents	2,708	6,143
Bank Time Deposits | Estimated Fair Value
Assets:
Cash and cash equivalents	$ 2,708	$ 6,143

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Basic
Net income									$ 159,718	$ 123,340	$ 60,100
Less: Earnings allocated to participating securities									(1,650)	0	0
Net income	$ 41,098	$ 41,375	$ 38,527	$ 38,718	$ 39,643	$ 28,392	$ 27,303	$ 28,002	$ 158,068	$ 123,340	$ 60,100
Weighted average common shares outstanding (in shares)									60,339,714	53,963,047	37,705,556
Basic earnings per common share (in dollars per share)	$ 0.69	$ 0.69	$ 0.62	$ 0.62	$ 0.64	$ 0.46	$ 0.59	$ 0.61	$ 2.62	$ 2.29	$ 1.59
Diluted
Net income	$ 41,098	$ 41,375	$ 38,527	$ 38,718	$ 39,643	$ 28,392	$ 27,303	$ 28,002	$ 158,068	$ 123,340	$ 60,100
Weighted average common shares outstanding (in shares)									60,339,714	53,963,047	37,705,556
Diluted effect of share-based compensation (in shares)									352,567	650,010	805,705
Weighted average diluted common shares (in shares)									60,692,281	54,613,057	38,511,261
Diluted earnings per common share (in dollars per share)	$ 0.69	$ 0.69	$ 0.62	$ 0.62	$ 0.63	$ 0.46	$ 0.58	$ 0.60	$ 2.60	$ 2.26	$ 1.56
Restricted Stock Units RSUs
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted average number of stock options excluded (in shares)									0	0	17,524
Stock option
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted average number of stock options excluded (in shares)									0	0

Derivative Instruments (Details

Derivative Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Derivative [Line Items]
Derivative assets, fair value	$ 2,103	$ 1,681
Derivative liabilities, fair value	2,103	1,681
Not Designated as Hedging Instrument
Derivative [Line Items]
Notional	76,314	57,502
Derivative assets, fair value	2,103	1,681
Derivative liabilities, fair value	2,103	1,681
Not Designated as Hedging Instrument | Interest rate swap contracts
Derivative [Line Items]
Notional	76,314	57,502
Derivative assets, fair value	2,103	1,681
Derivative liabilities, fair value	$ 2,103	$ 1,681

Balance Sheet Offsetting (Detai

Balance Sheet Offsetting (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financial assets:
Gross Amounts Recognized in the Consolidated Balance Sheets	$ 2,103	$ 2,177
Gross Amounts Offset in the Consolidated Balance Sheets	0	(496)
Net Amounts Presented in the Consolidated Balance Sheets	2,103	1,681
Financial Instruments	0	0
Cash Collateral	0	0
Net Amount	2,103	1,681
Financial liabilities:
Gross Amounts Recognized in the Consolidated Balance Sheets	2,107	1,681
Gross Amounts Offset in the Consolidated Balance Sheets	(4)	0
Net Amounts Presented in the Consolidated Balance Sheets	2,103	1,681
Financial Instruments	0	0
Cash Collateral	(1,678)	0
Net Amount	425	1,681
Not Designated as Hedging Instrument
Financial assets:
Gross Amounts Recognized in the Consolidated Balance Sheets	2,103	2,177
Gross Amounts Offset in the Consolidated Balance Sheets	0	(496)
Net Amounts Presented in the Consolidated Balance Sheets	2,103	1,681
Financial Instruments	0	0
Cash Collateral	0	0
Net Amount	2,103	1,681
Financial liabilities:
Gross Amounts Recognized in the Consolidated Balance Sheets	2,107	1,681
Gross Amounts Offset in the Consolidated Balance Sheets	(4)	0
Net Amounts Presented in the Consolidated Balance Sheets	2,103	1,681
Financial Instruments	0	0
Cash Collateral	(1,678)	0
Net Amount	$ 425	$ 1,681

Revenue Recognition - Summary o

Revenue Recognition - Summary of Company's Revenue Streams (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
NONINTEREST INCOME
Loan servicing fees									$ 1,840	$ 1,445	$ 787
Earnings on bank-owned life insurance									3,486	3,427	2,279
Net gain from sales of loans									6,642	10,759	12,468
Net gain from sales of investment securities									8,571	1,399	2,737
Other income									4,486	3,641	5,680
Total noninterest income	$ 9,801	$ 11,430	$ 6,324	$ 7,681	$ 6,970	$ 8,240	$ 8,151	$ 7,666	35,236	31,027	31,114
Service charges on deposit accounts
NONINTEREST INCOME
Noninterest income									5,769	5,128	3,273
Other service fee income
NONINTEREST INCOME
Noninterest income									1,438	902	1,847
Debit card interchange income
NONINTEREST INCOME
Noninterest income									3,004	4,326	2,043
Within Scope
NONINTEREST INCOME
Other income									1,015	1,242	491
Total noninterest income									11,226	11,598	7,654
Within Scope | Service charges on deposit accounts
NONINTEREST INCOME
Noninterest income									5,769	5,128	3,273
Within Scope | Other service fee income
NONINTEREST INCOME
Noninterest income									1,438	902	1,847
Within Scope | Debit card interchange income
NONINTEREST INCOME
Noninterest income									3,004	4,326	2,043
Out of Scope
NONINTEREST INCOME
Loan servicing fees									1,840	1,445	787
Earnings on bank-owned life insurance									3,486	3,427	2,279
Net gain from sales of loans									6,642	10,759	12,468
Net gain from sales of investment securities									8,571	1,399	2,737
Other income									3,471	2,399	5,189
Total noninterest income									$ 24,010	$ 19,429	$ 23,460

Leases - Narrative (Details)

Leases - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Leases [Abstract]
Expense associated with leases	$ 14,100
Operating lease expense	11,700
Short-term lease expense	2,400
Rental income	$ 142	$ 480

Leases - Schedule of Supplement

Leases - Schedule of Supplemental Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
Balance Sheet:
Operating lease right of use assets	$ 43,177
Operating lease liabilities	46,498
Cash Flows:
Operating cash flows from operating leases	$ 11,747

Leases - Schedule of Minimum Co

Leases - Schedule of Minimum Contractual Lease Payments and Other Information (Details) $ in Thousands	Dec. 31, 2019USD ($)
Operating leases
2019	$ 10,138
2020	10,602
2021	10,137
2022	9,055
2023	7,318
Thereafter	7,265
Total	54,515
Short-term leases
2019	143
2020	7
2021	0
2022	0
2023	0
Thereafter	0
Total	150
Total contractual base rents
2019	10,281
2020	10,609
2021	10,137
2022	9,055
2023	7,318
Thereafter	7,265
Total	54,665
Total liability to make lease payments	46,498
Difference in undiscounted and discounted future lease payments	$ 8,167
Weighted average discount rate	6.13%
Weighted average remaining lease term (years)	5 years 4 months 24 days

Leases - Schedule of Informatio

Leases - Schedule of Information Related to Minimum Contractual Lease Payments (Details) $ in Thousands	Dec. 31, 2019USD ($)
Leases [Abstract]
2019	$ 11,468
2020	10,869
2021	10,133
2022	9,296
2023	8,124
Thereafter	10,518
Total	$ 60,408

Related Parties (Details)

Related Parties (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Related Party Transaction [Line Items]
Related party deposits	$ 510.2	$ 471.9
Associa
Related Party Transaction [Line Items]
Related party deposits	468.9	436.2
Executive Officers And Directors
Related Party Transaction [Line Items]
Loan receivable	$ 5.5	$ 5.8

Quarterly Results of Operatio_3

Quarterly Results of Operations (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Interest income	$ 129,846	$ 132,604	$ 132,414	$ 131,243	$ 136,021	$ 128,876	$ 92,699	$ 90,827	$ 526,107	$ 448,423	$ 270,005
Interest expense	16,927	20,269	21,773	19,837	18,475	16,163	11,528	9,546	78,806	55,712	22,503
Provision for credit losses	2,297	1,562	334	1,526	2,258	1,981	1,761	2,253	7,135	8,156	8,640
Noninterest income	9,801	11,430	6,324	7,681	6,970	8,240	8,151	7,666	35,236	31,027	31,114
Noninterest expense	66,216	65,336	63,936	63,577	67,239	82,782	50,076	49,808	259,065	249,905	167,958
Income tax provision	13,109	15,492	14,168	15,266	15,376	7,798	10,182	8,884	58,035	42,240	42,126
Net income	$ 41,098	$ 41,375	$ 38,527	$ 38,718	$ 39,643	$ 28,392	$ 27,303	$ 28,002	$ 158,068	$ 123,340	$ 60,100
Earnings per share:
Basic (in dollars per share)	$ 0.69	$ 0.69	$ 0.62	$ 0.62	$ 0.64	$ 0.46	$ 0.59	$ 0.61	$ 2.62	$ 2.29	$ 1.59
Diluted (in dollars per share)	$ 0.69	$ 0.69	$ 0.62	$ 0.62	$ 0.63	$ 0.46	$ 0.58	$ 0.60	$ 2.60	$ 2.26	$ 1.56

Parent Company Financial Info_3

Parent Company Financial Information - STATEMENTS OF FINANCIAL CONDITION (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Condensed Financial Information Disclosure [Abstract]
Percentage of capital stock of the Bank held	100.00%
Assets
Other assets	$ 154,992	$ 89,568
Total assets	11,776,012	11,487,387
Liabilities
Subordinated debentures	215,145	110,313
Accrued expenses and other liabilities	131,367	81,345
Total liabilities	9,763,418	9,517,690
Total Stockholders’ Equity	2,012,594	1,969,697	$ 1,241,996	$ 459,740
Total liabilities and stockholders’ equity	11,776,012	11,487,387
Corporation
Assets
Cash and cash equivalents	13,717	13,160
Investment in subsidiaries	2,217,903	2,068,077
Other assets	1,230	1,689
Total assets	2,232,850	2,082,926
Liabilities
Subordinated debentures	215,145	110,313
Accrued expenses and other liabilities	5,111	2,916
Total liabilities	220,256	113,229
Total Stockholders’ Equity	2,012,594	1,969,697
Total liabilities and stockholders’ equity	$ 2,232,850	$ 2,082,926

Parent Company Financial Info_4

Parent Company Financial Information - STATEMENTS OF OPERATIONS (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Expense
Subordinated debentures									$ 10,680	$ 6,716	$ 4,721
Compensation and benefits									139,187	129,886	84,138
Noninterest expense	$ 66,216	$ 65,336	$ 63,936	$ 63,577	$ 67,239	$ 82,782	$ 50,076	$ 49,808	259,065	249,905	167,958
INCOME BEFORE INCOME TAXES									217,753	165,580	102,226
Income tax	13,109	15,492	14,168	15,266	15,376	7,798	10,182	8,884	58,035	42,240	42,126
Net income	$ 41,098	$ 41,375	$ 38,527	$ 38,718	$ 39,643	$ 28,392	$ 27,303	$ 28,002	158,068	123,340	60,100
Corporation
Income
Dividend income from the Bank									54,118	0	0
Interest income									51	57	36
Total income									54,169	57	36
Expense
Subordinated debentures									10,680	6,716	4,721
Compensation and benefits									3,106	2,757	2,832
Noninterest expense									2,818	3,384	6,123
Total expense									16,604	12,857	13,676
INCOME BEFORE INCOME TAXES									37,565	(12,800)	(13,640)
Income tax									(4,695)	(3,680)	(5,417)
Equity in undistributed earnings of subsidiary									42,260	(9,120)	(8,223)
Equity in undistributed earnings of subsidiary									117,458	132,460	68,323
Net income									$ 159,718	$ 123,340	$ 60,100

Parent Company Financial Info_5

Parent Company Financial Information - STATEMENTS OF CASH FLOWS (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net income	$ 41,098,000	$ 41,375,000	$ 38,527,000	$ 38,718,000	$ 39,643,000	$ 28,392,000	$ 27,303,000	$ 28,002,000	$ 158,068,000	$ 123,340,000	$ 60,100,000
Adjustments to reconcile net income to cash used in operating activities:
Share-based compensation expense									10,528,000	9,033,000	5,809,000
Change in accrued expenses and other liabilities, net									(6,265,000)	14,157,000	5,193,000
Net cash provided by (used) in operating activities									182,690,000	196,491,000	69,371,000
CASH FLOWS FROM INVESTING ACTIVITIES:
Cash acquired in acquisitions, net									0	146,571,000	225,945,000
Net cash used in investing activities									(98,251,000)	(137,493,000)	(284,169,000)
Cash flows from financing activities:
Redemption of junior subordinated debt securities									(18,558,000)	0	0
Proceeds from issuance of subordinated debt, net									122,453,000	0	0
Cash dividends paid									(53,867,000)	0	0
Repurchase and retirement of common stock									(100,000,000)	0	0
Restricted stock surrendered and canceled									(3,285,000)	(1,669,000)	(1,258,000)
Net cash provided by (used in) financing activities									39,005,000	(52,756,000)	255,105,000
Net change in cash and cash equivalents									123,444,000	6,242,000	40,307,000
Cash and cash equivalents, beginning of year				203,406,000				197,164,000	203,406,000	197,164,000	156,857,000
Cash and cash equivalents, end of year	326,850,000				203,406,000				326,850,000	203,406,000	197,164,000
Corporation
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net income									159,718,000	123,340,000	60,100,000
Adjustments to reconcile net income to cash used in operating activities:
Share-based compensation expense									10,528,000	9,033,000	5,809,000
Equity in undistributed earnings of subsidiary and dividends from the bank									(117,458,000)	(132,460,000)	(68,323,000)
Increase in current and deferred taxes									42,000	65,000	0
Change in accrued expenses and other liabilities, net									3,131,000	(4,149,000)	(365,000)
Change in accrued interest receivable and other assets, net									(4,826,000)	2,461,000	817,000
Net cash provided by (used) in operating activities									51,135,000	(1,710,000)	(1,962,000)
CASH FLOWS FROM INVESTING ACTIVITIES:
Cash acquired in acquisitions, net									0	2,985,000	0
Other, net									0	(5,467,000)	601,000
Net cash used in investing activities									0	(2,482,000)	601,000
Cash flows from financing activities:
Redemption of junior subordinated debt securities									(18,558,000)	0	0
Proceeds from issuance of subordinated debt, net									122,453,000	0	0
Cash dividends paid									(53,867,000)	0	0
Repurchase and retirement of common stock									(100,000,000)	0	0
Proceeds from exercise of options									2,679,000	1,924,000	4,592,000
Restricted stock surrendered and canceled									(3,285,000)	(1,669,000)	(1,258,000)
Net cash provided by (used in) financing activities									(50,578,000)	255,000	3,334,000
Net change in cash and cash equivalents									557,000	(3,937,000)	1,973,000
Cash and cash equivalents, beginning of year				$ 13,160,000				$ 17,097,000	13,160,000	17,097,000	15,124,000
Cash and cash equivalents, end of year	$ 13,717,000				$ 13,160,000				$ 13,717,000	$ 13,160,000	$ 17,097,000

Acquisitions - Narrative (Detai

Acquisitions - Narrative (Details) $ / shares in Units, $ in Thousands	Jul. 01, 2018USD ($)$ / sharesshares	Nov. 01, 2017USD ($)$ / sharesshares	Apr. 02, 2017USD ($)shares	Dec. 31, 2019USD ($)	Jun. 30, 2019USD ($)	Dec. 31, 2018USD ($)	Nov. 01, 2018USD ($)	Mar. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Jul. 01, 2019USD ($)	Apr. 01, 2018USD ($)	Apr. 01, 2017USD ($)	Mar. 31, 2017USD ($)$ / shares	Dec. 31, 2016USD ($)
Business Acquisition [Line Items]
Goodwill acquired during the year				$ 0		$ 313,043			$ 390,839
Purchase accounting adjustments				(404)		2,354			0
Goodwill				808,322		808,726			$ 493,329					$ 102,490
Grandpoint Capital, Inc.
Business Acquisition [Line Items]
Total assets acquired	$ 3,051,567									$ 3,076,224
Gross loans acquired	2,400,000
Deposits	$ 2,506,663									2,506,929
Equity issued shares	0.4750
Consideration paid	$ 602,200				$ 602,152
Aggregate cash paid for shares and consideration payable	$ 28,100
Closing stock price of common stock (in dollars per share) | $ / shares	$ 38.15
Goodwill acquired during the year				312,600		313,000
Purchase accounting adjustments				$ 580
Goodwill										$ 312,639
Plaza Bancorp
Business Acquisition [Line Items]
Total assets acquired		$ 1,245,740					$ 1,254,730
Gross loans acquired		1,060,000
Deposits		$ 1,081,727					1,082,951
Equity issued shares		0.2000
Consideration paid		$ 245,800					245,761
Aggregate cash paid for shares and consideration payable		$ 6,500
Number of shares of common stock issued as consideration (in shares) | shares		6,049,373
Closing stock price of common stock (in dollars per share) | $ / shares		$ 40.40
Goodwill acquired during the year						1,800
Goodwill		$ 124,000					$ 123,640
Heritage Oaks Bank
Business Acquisition [Line Items]
Total assets acquired											$ 2,014,822	$ 2,003,635	$ 2,010,000
Gross loans acquired													1,360,000
Deposits											1,669,550	$ 1,668,085	$ 1,670,000
Equity issued shares												0.3471
Consideration paid			$ 467,400					$ 467,439
Aggregate cash paid for shares and consideration payable												$ 3,900
Closing stock price of common stock (in dollars per share) | $ / shares													$ 38.55
Goodwill acquired during the year						$ 600
Goodwill											$ 269,553	$ 270,000
Common Stock | Grandpoint Capital, Inc.
Business Acquisition [Line Items]
Number of shares of common stock issued as consideration (in shares) | shares	15,758,089
Common Stock | Heritage Oaks Bank
Business Acquisition [Line Items]
Number of shares of common stock issued as consideration (in shares) | shares			11,959,022

Acquisitions - Assets Acquired

Acquisitions - Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Jul. 01, 2018	Nov. 01, 2017	Apr. 02, 2017	Jun. 30, 2019	Nov. 01, 2018	Mar. 31, 2018	Dec. 31, 2019	Jul. 01, 2019	Dec. 31, 2018	Apr. 01, 2018	Dec. 31, 2017	Apr. 01, 2017	Mar. 31, 2017	Dec. 31, 2016
LIABILITIES ASSUMED
Goodwill recognized							$ 808,322		$ 808,726		$ 493,329			$ 102,490
Grandpoint Capital, Inc.
ASSETS ACQUIRED
Cash and cash equivalents	$ 147,551							$ 147,551
Investment securities	395,905							392,858
Loans, gross	2,404,042							2,352,717
Allowance for loan losses	(18,665)							0
Fixed assets	6,015							9,122
Core deposit intangible	5,093							71,943
Deferred tax assets	14,185							5,028
Other assets	97,441							97,005
Total assets acquired	3,051,567							3,076,224
LIABILITIES ASSUMED
Deposits	2,506,663							2,506,929
Borrowings	255,155							254,923
Other Liabilities	23,687							24,859
Total liabilities assumed	2,785,505							2,786,711
Excess of assets acquired over liabilities assumed	266,062							289,513
Consideration paid	$ 602,200			$ 602,152
Goodwill recognized								$ 312,639
Fair Value Adjustment
Cash and cash equivalents				0
Investment securities				(3,047)
Loans, gross				(51,325)
Allowance for loan losses				18,665
Fixed assets				3,107
Core deposit intangible				66,850
Deferred tax assets				(9,157)
Other assets				(436)
Total assets acquired				24,657
Deposits				266
Borrowings				(232)
Other Liabilities				1,172
Total liabilities assumed				1,206
Excess of assets acquired over liabilities assumed				$ 23,451
Plaza Bancorp
ASSETS ACQUIRED
Cash and cash equivalents		$ 150,459			$ 150,459
Loans, gross		1,069,359			1,062,901
Allowance for loan losses		(13,009)			0
Fixed assets		7,389			5,965
Core deposit intangible		198			10,773
Deferred tax assets		11,849			5,726
Other assets		19,495			18,906
Total assets acquired		1,245,740			1,254,730
LIABILITIES ASSUMED
Deposits		1,081,727			1,082,951
Borrowings		40,755			41,152
Other Liabilities		8,956			8,506
Total liabilities assumed		1,131,438			1,132,609
Excess of assets acquired over liabilities assumed		114,302			122,121
Consideration paid		245,800			245,761
Goodwill recognized		$ 124,000			123,640
Fair Value Adjustment
Cash and cash equivalents					0
Loans, gross					(6,458)
Allowance for loan losses					13,009
Fixed assets					(1,424)
Core deposit intangible					10,575
Deferred tax assets					(6,123)
Other assets					(589)
Total assets acquired					8,990
Deposits					1,224
Borrowings					397
Other Liabilities					(450)
Total liabilities assumed					1,171
Excess of assets acquired over liabilities assumed					$ 7,819
Heritage Oaks Bank
ASSETS ACQUIRED
Cash and cash equivalents										$ 78,728		$ 78,728
Investment securities										442,923		445,299
Loans, gross										1,364,688		1,384,949
Allowance for loan losses										0		(17,200)
Fixed assets										34,902		35,567
Core deposit intangible										28,123		3,207
Deferred tax assets										10,244		17,850
Other assets										55,214		55,235
Total assets acquired										2,014,822		2,003,635	$ 2,010,000
LIABILITIES ASSUMED
Deposits										1,669,550		1,668,085	$ 1,670,000
Borrowings										139,034		139,150
Other Liabilities										8,352		8,059
Total liabilities assumed										1,816,936		1,815,294
Excess of assets acquired over liabilities assumed										197,886		188,341
Consideration paid			$ 467,400			$ 467,439
Goodwill recognized										$ 269,553		$ 270,000
Fair Value Adjustment
Cash and cash equivalents						0
Investment securities						(2,376)
Loans, gross						(20,261)
Allowance for loan losses						17,200
Fixed assets						(665)
Core deposit intangible						24,916
Deferred tax assets						(7,606)
Other assets						(21)
Total assets acquired						11,187
Deposits						1,465
Borrowings						(116)
Other Liabilities						293
Total liabilities assumed						1,642
Excess of assets acquired over liabilities assumed						$ 9,545

Acquisitions - Additional infor

Acquisitions - Additional information (Details) - Acquired Loans $ in Thousands	Dec. 31, 2019USD ($)
Grandpoint Capital, Inc.
Business Acquisition [Line Items]
Contractual amounts due	$ 3,496,905
Cash flows not expected to be collected	39,071
Expected cash flows	3,457,834
Interest component of expected cash flows	1,105,117
Fair value of acquired loans	2,352,717
Plaza Bancorp
Business Acquisition [Line Items]
Contractual amounts due	1,708,685
Cash flows not expected to be collected	20,152
Expected cash flows	1,688,533
Interest component of expected cash flows	625,632
Fair value of acquired loans	1,062,901
Heritage Oaks Bank
Business Acquisition [Line Items]
Contractual amounts due	1,717,230
Cash flows not expected to be collected	4,442
Expected cash flows	1,712,788
Interest component of expected cash flows	348,100
Fair value of acquired loans	$ 1,364,688

Acquisitions - Pro Forma Inform

Acquisitions - Pro Forma Information (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Business Combinations [Abstract]
Net interest and other income	$ 473,748	$ 465,400
Net income	$ 133,565	$ 96,758
Basic earnings per share (in dollars per share)	$ 2.16	$ 1.58
Diluted earnings per share (in dollars per share)	$ 2.14	$ 1.56

Subsequent Events (Details)

Subsequent Events (Details) $ / shares in Units, $ in Thousands	Jan. 31, 2020USD ($)office$ / sharesshares	Jan. 21, 2020$ / shares	Dec. 31, 2019USD ($)$ / shares	Dec. 31, 2018USD ($)
Subsequent Event [Line Items]
Cash dividend declared (in dollars per share) | $ / shares			$ 0.88
Total assets			$ 11,776,012	$ 11,487,387
Gross loans acquired			8,733,570	8,852,005
Total deposits			8,898,509	$ 8,658,351
Opus | Pro Forma
Subsequent Event [Line Items]
Total assets acquired on a pro forma basis			20,000,000
Opus | Opus
Subsequent Event [Line Items]
Total assets			8,000,000
Gross loans acquired			5,900,000
Total deposits			$ 6,500,000
Subsequent Event
Subsequent Event [Line Items]
Cash dividend declared (in dollars per share) | $ / shares		$ 0.25
Closing price for the Corporation's common stock (in dollars per share) | $ / shares	$ 29.80
Subsequent Event | Opus
Subsequent Event [Line Items]
Consideration paid	$ 1,000,000
Value of company stock (in dollars per share) | $ / shares	$ 26.82
Subsequent Event | Opus | Opus
Subsequent Event [Line Items]
Number of banking offices | office	46
Subsequent Event | Opus | Common Stock
Subsequent Event [Line Items]
Equity issued shares	0.90
Number of shares of common stock issued as consideration (in shares) | shares	34,700,000