Pacific Premier Bancorp (PPBI) 10-Q 8 Aug 18 2018 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2018	Aug. 07, 2018
Document and Entity Information
Entity Registrant Name	PACIFIC PREMIER BANCORP INC
Entity Central Index Key	1,028,918
Document Type	10-Q
Document Period End Date	Jun. 30, 2018
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		62,387,594
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q2

CONSOLIDATED STATEMENTS OF FINA

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
ASSETS
Cash and due from banks	$ 30,025	$ 39,606
Interest-bearing deposits with financial institutions	101,443	157,558
Cash and cash equivalents	131,468	197,164
Interest-bearing time deposits with financial institutions	6,633	6,633
Investments held-to-maturity, at amortized cost (fair value of $31,127 as of June 30, 2018 and $18,082 as of December 31, 2017, respectively)	31,965	18,291
Investment securities available-for-sale, at fair value	874,700	787,429
FHLB, FRB and other stock, at cost	82,666	65,881
Loans held for sale, at lower of cost or fair value	13,879	23,426
Loans held for investment	6,277,586	6,196,224
Allowance for loan losses	(31,747)	(28,936)
Loans held for investment, net	6,245,839	6,167,288
Accrued interest receivable	27,420	27,060
Other real estate owned	220	326
Premises and equipment	54,049	53,155
Deferred income taxes, net	17,183	13,265
Bank owned life insurance	76,937	75,976
Intangible assets	37,938	43,014
Goodwill	494,672	493,329
Other assets	62,562	52,264
Total assets	8,158,131	8,024,501
Deposit accounts:
Noninterest-bearing checking	2,349,464	2,226,876
Interest-bearing:
Checking	342,986	365,193
Money market/savings	2,446,849	2,409,007
Retail certificates of deposit	823,425	714,751
Wholesale/brokered certificates of deposit	345,626	370,059
Total interest-bearing	3,958,886	3,859,010
Total deposits	6,308,350	6,085,886
FHLB advances and other borrowings	379,100	536,287
Subordinated debentures	105,253	105,123
Accrued expenses and other liabilities	76,903	55,209
Total liabilities	6,869,606	6,782,505
STOCKHOLDERS’ EQUITY
Preferred stock, $.01 par value; 1,000,000 authorized; none issued and outstanding	0	0
Common stock, $.01 par value; 100,000,000 shares authorized; 46,629,118 shares at June 30, 2018 and 46,245,050 shares at December 31, 2017 issued and outstanding	459	458
Additional paid-in capital	1,067,907	1,063,974
Retained earnings	232,372	177,149
Accumulated other comprehensive (loss) income	(12,213)	415
Total stockholders' equity	1,288,525	1,241,996
Total liabilities and stockholders' equity	$ 8,158,131	$ 8,024,501

CONSOLIDATED STATEMENTS OF FIN3

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Investments held-to-maturity, fair value	$ 31,127	$ 18,082
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	1,000,000	1,000,000
Preferred stock, shares outstanding (in shares)	0	0
Preferred stock, shares issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares issued (in shares)	46,629,118	46,245,050
Common stock, shares outstanding (in shares)	46,629,118	46,245,050

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
INTEREST INCOME
Loans	$ 85,625	$ 84,173	$ 63,554	$ 169,798	$ 105,990
Investment securities and other interest-earning assets	7,074	6,654	5,179	13,728	8,170
Total interest income	92,699	90,827	68,733	183,526	114,160
INTEREST EXPENSE
Deposits	7,756	5,914	3,081	13,670	5,216
FHLB advances and other borrowings	2,125	2,023	1,175	4,148	1,779
Subordinated debentures	1,647	1,609	1,139	3,256	2,124
Total interest expense	11,528	9,546	5,395	21,074	9,119
Net interest income before provision for credit losses	81,171	81,281	63,338	162,452	105,041
Provision for credit losses	1,761	2,253	1,945	4,014	4,190
Net interest income after provision for credit losses	79,410	79,028	61,393	158,438	100,851
NONINTEREST INCOME
Loan servicing fees	292	345	143	637	365
Earnings on bank-owned life insurance	617	611	689	1,228	1,025
Net gain from sales of loans	3,843	2,958	2,887	6,801	5,698
Net gain from sales of investment securities	330	6	2,093	336	2,093
Other income	753	1,414	907	2,167	1,434
Total noninterest income	8,151	7,666	8,759	15,817	13,442
NONINTEREST EXPENSE
Compensation and benefits	29,274	28,873	21,623	58,147	36,510
Premises and occupancy	5,045	4,781	3,733	9,826	6,186
Data processing	2,747	2,702	2,439	5,449	3,626
Other real estate owned operations, net	2	1	44	3	56
FDIC insurance premiums	581	611	818	1,192	1,273
Legal, audit and professional expense	1,816	1,839	1,178	3,655	2,035
Marketing expense	1,352	1,530	1,006	2,882	1,824
Office, telecommunications and postage expense	1,115	1,080	922	2,195	1,355
Loan expense	594	591	1,068	1,185	1,536
Deposit expense	2,302	1,676	1,669	3,978	3,113
Merger-related expense	943	936	10,117	1,879	15,063
CDI amortization	1,996	2,274	1,761	4,270	2,272
Other expense	2,309	2,914	2,077	5,223	3,610
Total noninterest expense	50,076	49,808	48,455	99,884	78,459
Net income before income taxes	37,485	36,886	21,697	74,371	35,834
Income tax	10,182	8,884	7,521	19,066	12,137
Net Income	$ 27,303	$ 28,002	$ 14,176	$ 55,305	$ 23,697
EARNINGS PER SHARE
Basic (in dollars per share)	$ 0.59	$ 0.61	$ 0.36	$ 1.20	$ 0.71
Diluted (in dollars per share)	$ 0.58	$ 0.60	$ 0.35	$ 1.18	$ 0.69
WEIGHTED AVERAGE SHARES OUTSTANDING
Basic (in shares)	46,053,077	45,893,496	39,586,524	45,973,727	33,591,040
Diluted (in shares)	46,702,968	46,652,059	40,267,220	46,678,123	34,267,215
Service charges on deposit accounts
NONINTEREST INCOME
Noninterest income	$ 1,057	$ 1,150	$ 866	$ 2,207	$ 1,207
Other service fee income
NONINTEREST INCOME
Noninterest income	169	146	495	315	874
Debit card interchange fee income
NONINTEREST INCOME
Noninterest income	$ 1,090	$ 1,036	$ 679	$ 2,126	$ 746

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands		3 Months Ended			6 Months Ended
		Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Statement of Comprehensive Income [Abstract]
Net income		$ 27,303	$ 28,002	$ 14,176	$ 55,305	$ 23,697
Other comprehensive income, net of tax:
Unrealized holding (loss)/gain on securities arising during the period, net of income taxes	[1]	(3,122)	(9,343)	6,336	(12,465)	7,349
Reclassification adjustment for net (gains) losses on sale of securities included in net income, net of income taxes	[2]	(240)	(5)	(1,368)	(245)	(1,368)
Other comprehensive (loss) income, net of tax		(3,362)	(9,348)	4,968	(12,710)	5,981
Comprehensive income, net of tax		$ 23,941	$ 18,654	$ 19,144	$ 42,595	$ 29,678
[1]	Income tax (benefit) expense on the unrealized (loss)/gain on securities was $(1.3) million for the three months ended June 30, 2018, $(3.9) million for the three months ended March 31, 2018, $4.3 million for the three months ended June 30, 2017, $(5.2) million for the six months ended June 30, 2018 and $5.0 million for the six months ended June 30, 2017.
[2]	Income tax expense (benefit) on the reclassification adjustment for net (gains) losses on sale of securities included in net income was $90,000 for the three months ended June 30, 2018, $1,000 for the three months ended March 31, 2018, $725,000 for the three months ended June 30, 2017, $91,000 for the six months ended June 30, 2018 and $725,000 for the six months ended June 30, 2017.

CONSOLIDATED STATEMENTS OF COM6

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Statement of Comprehensive Income [Abstract]
Unrealized holding (loss)/gain on securities arising during the period, income tax expense (benefit)	$ (1,300)	$ (3,900)	$ 4,300	$ (5,200)	$ 5,000
Reclassification adjustment for net (gains) losses on sale of securities included in net income, income tax expense (benefit)	$ 90	$ 1	$ 725	$ 91	$ 725

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	23,697			23,697
Other comprehensive income	5,981				5,981
Share-based compensation expense	2,797		2,797
Issuance of restricted stock, net (in shares)		53,468
Common stock issued (in shares)		11,959,022
Common stock issued	464,982	$ 120	464,862
Repurchase of common stock	(1,077)		(1,077)
Repurchase of common stock (in shares)		0
Exercise of stock options	3,611	$ 2	3,609
Exercise of stock options (in shares)		237,985
Balance at Jun. 30, 2017	959,731	$ 396	815,329	140,746	3,260
Balance (in shares) at Jun. 30, 2017		40,048,758
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	46,245,050
Increase (Decrease) in Stockholders' Equity
Net income	$ 55,305			55,305
Other comprehensive income	(12,710)				(12,710)
Share-based compensation expense	3,917		3,917
Issuance of restricted stock, net	0		0
Issuance of restricted stock, net (in shares)		198,627
Repurchase of common stock	(1,579)		(1,579)
Repurchase of common stock (in shares)		(28,849)
Exercise of stock options	1,596	$ 1	1,595
Exercise of stock options (in shares)		214,290
Reclassification of certain tax effects of the Tax Cuts and Jobs Act	0			(82)	82
Balance at Jun. 30, 2018	$ 1,288,525	$ 459	$ 1,067,907	$ 232,372	$ (12,213)
Balance (in shares) at Jun. 30, 2018	46,629,118	46,629,118

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities:
Net income	$ 55,305	$ 23,697
Adjustments to net income:
Depreciation and amortization expense	3,717	2,049
Provision for credit losses	4,014	4,190
Share-based compensation expense	3,917	2,796
Loss on sale and disposal of premises and equipment	52	200
Loss (gain) on sale of or write down of other real estate owned	21	(94)
Net amortization on securities	3,622	3,745
Net accretion of discounts/premiums for loans acquired and deferred loan fees/costs	(1,258)	1,722
Gain on sale of investment securities available-for-sale	(336)	(2,093)
Originations of loans held for sale	(72,699)	(61,448)
Proceeds from the sales of and principal payments from loans held for sale	94,223	65,508
Gain on sale of loans	(6,801)	(5,698)
Deferred income tax expense	1,963	912
Change in accrued expenses and other liabilities, net	20,954	4,696
Income from bank owned life insurance, net	(961)	(849)
Amortization of core deposit intangible	4,269	2,272
Change in accrued interest receivable and other assets, net	(3,383)	2,066
Net cash provided by operating activities	106,619	43,671
Cash flows from investing activities:
Change in other real estate owned from sales	108	182
Increase in loans, net	(88,772)	(254,468)
Purchase of held-to-maturity securities	(14,036)	0
Principal payments on held-to-maturity securities	318	798
Purchase of securities available-for-sale	(181,536)	(109,944)
Principal payments on securities available-for-sale	(47,743)	(33,671)
Proceeds from sale or maturity of securities available-for-sale	20,323	216,804
Proceeds from bank owned life insurance death benefit	0	199
Purchases of premises and equipment	(4,663)	(674)
Change in FHLB, FRB, and other stock, at cost	(16,648)	(9,569)
Change in cash acquired in acquisitions, net	(456)	77,144
Net cash used in investing activities	(237,619)	(45,857)
Cash flows from financing activities:
Net increase in deposit accounts	222,464	131,397
Net change in short-term borrowings	(146,677)	(59,321)
Repayment of long-term borrowings	(10,500)	0
Proceeds from exercise of stock options and warrants	1,596	3,611
Repurchase of common stock	(1,579)	(1,077)
Net cash provided by financing activities	65,304	74,610
Net (decrease) increase in cash and cash equivalents	(65,696)	72,424
Cash and cash equivalents, beginning of period	197,164	156,857
Cash and cash equivalents, end of period	131,468	229,281
Supplemental cash flow disclosures:
Interest paid	20,053	8,828
Income taxes paid	17,491	1,858
Noncash investing activities during the period:
Security settled (purchases) in subsequent period	5,033	(11,130)
Assets acquired (liabilities assumed and capital created) in acquisitions (See Note 4):
Investment securities	0	442,923
FHLB and other stock	0	9,739
Loans	0	1,364,688
Core deposit intangible	0	28,123
Deferred income tax	0	11,623
Goodwill	0	268,075
Fixed assets	0	34,902
Other assets	0	45,475
Deposits	0	1,669,550
Other borrowings	0	139,034
Other liabilities	0	8,352
Common stock and additional paid-in capital	$ 0	$ 464,982

Basis of Presentation

Basis of Presentation	6 Months Ended
	Jun. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The consolidated financial statements include the accounts of Pacific Premier Bancorp, Inc. (the “Corporation”) and its wholly owned subsidiaries, including Pacific Premier Bank (the “Bank”) (collectively, the “Company,” “we,” “our” or “us”). All significant intercompany accounts and transactions have been eliminated in consolidation. In the opinion of management, the consolidated financial statements contain all adjustments (consisting of normal recurring accruals) necessary to present fairly the Company’s financial position as of June 30, 2018 and December 31, 2017 , the results of its operations and comprehensive income for the three months ended June 30, 2018 , March 31, 2018 and June 30, 2017 and the six months ended June 30, 2018 and 2017 and the changes in stockholders’ equity and cash flows for the six months ended June 30, 2018 and 2017 . Operating results or comprehensive income for the six months ended June 30, 2018 are not necessarily indicative of the results or comprehensive income that may be expected for any other interim period or the full year ending December 31, 2018 . Certain information and note disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). The unaudited consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017 (the “ 2017 Annual Report”). The Company accounts for its investments in its wholly owned special purpose entities, PPBI Trust I, Heritage Oaks Capital Trust II, Mission Community Capital Trust I, 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.

Recently Issued Accounting Pron

Recently Issued Accounting Pronouncements	6 Months Ended
	Jun. 30, 2018
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements Accounting Standards Adopted in 2018 In February 2018, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU" or "Update") 2018-02, Income Statement-Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income . On December 22, 2017, the Tax Cuts and Jobs Act of 2017 was signed into law, which among other things reduced the maximum federal corporate tax rate from 35% to 21%. This Update addresses concerns about the guidance in current U.S. GAAP that requires deferred tax liabilities and assets to be adjusted for the effect of a change in tax laws or rates with the effect included in income from continuing operations in the reporting period that includes the enactment date. That guidance is applicable even in situations in which the related income tax effects of items in accumulated other comprehensive income ("AOCI") were originally recognized in other comprehensive income (rather than in income from continuing operations). As a result of the adjustment of deferred taxes being required to be included in income from continuing operations, the tax effects of items within accumulated other comprehensive income (referred to as stranded tax effects for purposes of this Update) do not reflect the appropriate tax rate. This Update allows for an election to reclassify between retained earnings and AOCI the impact of the federal income tax rate change. The amendments in this Update are effective for fiscal years beginning after December 15, 2018 and interim periods within those fiscal years. Early adoption of the amendments of this Update is permitted. The Company elected to early adopt in the first quarter of 2018. Accordingly, the Company recorded an increase to AOCI and a decrease to retain earnings of approximately $82,000 for stranded tax effects on investment available for sale securities in the first quarter of 2018. In January 2017, the FASB issued ASU 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business . Under the current implementation guidance in Topic 805, there are three elements of a business-inputs, processes, and outputs. While an integrated set of assets and activities (collectively referred to as a “set”) that is a business usually has outputs, outputs are not required to be present. In addition, all the inputs and processes that a seller uses in operating a set are not required if market participants can acquire the set and continue to produce outputs. The amendments in this Update provide a screen to determine when a set is not a business. The screen requires that when substantially all of the fair value of the gross assets acquired (or disposed of) is concentrated in a single identifiable asset or a group of similar identifiable assets, the set is not a business. This screen reduces the number of transactions that need to be further evaluated. If the screen is not met, the amendments in this Update (1) require that to be considered a business, a set must include, at a minimum, an input and a substantive process that together significantly contribute to the ability to create output and (2) remove the evaluation of whether a market participant could replace missing elements. The amendments provide a framework to assist entities in evaluating whether both an input and a substantive process are present. The framework includes two sets of criteria to consider that depend on whether a set has outputs. Although outputs are not required for a set to be a business, outputs generally are a key element of a business; therefore, the Company has developed more stringent criteria for sets without outputs. Lastly, the amendments in this Update narrow the definition of the term output so that the term is consistent with how outputs are described in Topic 606. Public business entities should apply the amendments in this Update to annual periods beginning after December 15, 2017, including interim periods within those periods. The adoption of this standard did not have a material effect on the Company's operating results or financial condition. In November 2016, the FASB issued ASU 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash . This Update requires that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. Therefore, amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. The amendments in this Update are effective for public business entities for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. The adoption of this standard did not have a material effect on the Company's operating results or financial condition. In August 2016, the FASB issued ASU 2016-15, Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments . This Update provides guidance on eight specific cash flow classification issues, which include: 1) debt prepayment or debt extinguishment costs; 2) settlement of zero-coupon debt instruments or debt with coupon interest rates that are insignificant in relation to the effective interest rate; 3) contingent consideration payments made soon after a business combination; 4) proceeds from the settlement of insurance claims; 5) proceeds from the settlement of corporate-owned life insurance policies, including bank-owned life insurance policies; 6) distributions received from equity method investments; 7) beneficial interest in securitization transactions; and 8) separately identifiable cash flows and the application of the predominance principle. The amendments in this Update are effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. Early adoption is permitted, including adoption in an interim period; however, an entity is required to adopt all of the amendments in the same period. The amendments in this Update should be applied using a retrospective transition method to each period presented. The adoption of this standard did not have a material effect on the Company's operating results or financial condition. In January 2016, the FASB issued ASU 2016-01, Financial Instruments-Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities . Changes made to the current measurement model primarily affect the accounting for equity securities with readily determinable fair values, where changes in fair value will impact earnings instead of other comprehensive income. The accounting for other financial instruments, such as loans, investments in debt securities, and financial liabilities is largely unchanged. This Update also changes the presentation and disclosure requirements for financial instruments including a requirement that public business entities use exit price when measuring the fair value of financial instruments measured at amortized cost for disclosure purposes. This Update is effective for public business entities in fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. The adoption of ASU 2016-01 did not have a material effect on the Company's operating results or financial condition. In accordance with the guidance, the Company measures the fair value of financial instruments reported at amortized cost on the statement of financial condition using the exit price notion. For further details, refer to Note 10 - Fair Value of Financial instruments. ASU 2014-09, Revenue From Contracts With Customers (Topic 606) , ASU 2015-14 Revenue from Contracts with Customers (Topic 606): Deferral of Effective Date , ASU 2016-08 Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net) , ASU 2016-10 Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing , ASU 2016-11 Revenue Recognition (Topic 605) and Derivatives ad Hedging (Topic 815): Rescission of SEC Guidance Because of Accounting Standards Updates 2014-09 and 2014-16 Pursuant to Staff Announcements at the March 3, 2016 EITF Meeting , ASU 2016-12 Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients and ASU 2016-20 Revenue from Contracts with Customers (Topic 606): Technical Corrections and Improvements to Topic 606 . The FASB amended existing guidance related to revenue from contracts with customers, superseding and replacing nearly all existing revenue recognition guidance, including industry-specific guidance, establishing a new control-based revenue recognition model, changing the basis for deciding when revenue is recognized over time or at a point in time, providing new and more detailed guidance on specific topics and expanding and improving disclosures about revenue. In addition, this guidance specifies the accounting for some costs to obtain or fulfill a contract with a customer. The amendments are effective for public entities for annual reporting periods beginning after December 15, 2017. The Company adopted the provisions of ASU 2014-09 and its related amendments effective January 1, 2018 utilizing the modified retrospective transition method and determined the adoption was insignificant to the financial statements. Since the impact upon adoption of ASU 2014-09 and its related amendments was insignificant to the financial statements, a cumulative effect adjustment to retained earnings was not deemed necessary. The Company's review of its various revenue streams indicated that approximately 97% of the Company’s revenue is out of the scope of ASU 2014-09 and its related amendments, including all of the Company’s net interest income and a significant portion of non-interest income. For those revenue streams that are within the scope of ASU 2014-09 and its related amendments, the Company reviewed the associated customer contracts and agreements to determine the appropriate accounting for revenues under those contracts. The Company’s review did not identify any significant changes in the timing of revenue recognition under those contracts within the scope of ASU 2014-09 and its related amendments. Significant revenue streams that are within scope primarily relate to service charges and fees associated customer deposit accounts, as well as fees for various other services the Company provides its customers. As a result of the implementation of ASU 2014-09 and its related amendments, the Company will conduct a detailed review of its revenue streams at least annually, or more frequently if deemed necessary. Recent Accounting Guidance Not Yet Effective In March 2017, the FASB issued ASU 2017-08, Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchase 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. The 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 is not expected to have a material effect on the Company's operating results or financial condition. 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 methodology in current U.S. GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. For public business entities, the Update is effective for annual periods beginning after December 15, 2019 and interim period within those annual periods. The Company is currently evaluating the effects of ASU 2016-13 on its financial statements and disclosures. The Company is in the process of compiling key data elements and implementing a software model that will meet the requirements of the new guidance. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) . This Update is being issued to increase the transparency and comparability around lease obligations. Previously unrecorded off-balance sheet obligations will now be recorded in the consolidated statements of financial condition, accompanied by enhanced qualitative and quantitative disclosures in the notes to the 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. The Company is currently in the process of evaluating existing lease obligations and service agreements under the provisions of the new standard. This evaluation includes an assessment of the appropriate classification and related accounting of each lease agreement under the new standard, a review of applicability of the new standard to existing service agreements and gathering all essential lease data that will facilitate the application of the new standard. Upon adoption of the new standard articulated in this Update, the Company will record a liability representing an obligation to make future lease payments and will also record an asset representing rights to use the underlying leased assets. As of June 30, 2018, the Company believes these assets and liabilities to be recognized under the new standard will amount to less than 1% of the Company's total assets.

Significant Accounting Policies

Significant Accounting Policies	6 Months Ended
	Jun. 30, 2018
Accounting Policies [Abstract]
Significant Accounting Policies	Significant Accounting Policies Our accounting policies are described in Note 1. Description of Business and Summary of Significant Accounting Policies , of our audited consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2017 as filed with the Securities and Exchange Commission ("Form 10-K"). Select policies have been reiterated below that have a particular affiliation to our interim financial statements. Revenue Recognition - The Company accounts for certain of its revenue streams in accordance with ASC 606 - Revenue from Contracts with Customers . Revenue streams within the scope of and accounted for under ASC 606 include: service charges and fees on deposit accounts, debit card interchange fees, fees from other services the Bank provides its customers and gains and losses from the sale of other real estate owned and property, premises and equipment. ASC 606 requires revenue to be recognized when the Company satisfies related performance obligations by transferring to the customer a good or service. The recognition of revenue under ASC 606 requires the Company to first identify the contract with the customer, identify the performance obligations, determine the transaction price, allocate the transaction price to the performance obligations and finally recognize revenue when the performance obligations have been satisfied and the good or service has been transferred. The majority of the Company’s contracts with customers associated with revenue streams that are within the scope of ASC 606 are considered short-term in nature and can be canceled at any time by the customer or the Bank, such as a deposit account agreement. Other more significant revenue streams for the Company such as interest income on loans and investment securities are specifically excluded from the scope of ASC 606 and are accounted for under other applicable U.S. GAAP. Certain Acquired Loans –As part of business acquisitions, the Bank acquires certain loans that have shown evidence of credit deterioration since origination. These acquired loans are recorded at the allocated fair value, such that there is no carryover of the seller’s allowance for loan losses. Such acquired loans are accounted for individually. The Bank estimates the amount and timing of expected cash flows for each purchased loan, and the expected cash flows in excess of the allocated fair value is recorded as interest income over the remaining life of the loan (accretable yield). The excess of the loan’s contractual principal and interest over expected cash flows is not recorded (non-accretable difference). Over the life of the loan, expected cash flows continue to be estimated. If the present value of expected cash flows is less than the carrying amount, a loss is recorded through the allowance for loan losses. If the present value of expected cash flows is greater than the carrying amount, it is recognized as part of future interest 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 an indefinite useful life 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 has selected the fourth quarter as the period to perform the annual impairment test. Intangible assets with definite useful lives are amortized over their estimated useful lives to their estimated residual values. Goodwill is the only intangible asset with an indefinite life on our balance sheet. 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 assets is consumed or otherwise used up, or on a straight-line amortization method over their estimated useful lives, which range from 6 to 10 years . Use of Estimates –The preparation of 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. Actual results could differ from those estimates.

Acquisitions

Acquisitions	6 Months Ended
	Jun. 30, 2018
Business Combinations [Abstract]
Acquisitions	Acquisitions Plaza Bancorp Acquisition Effective as of November 1, 2017, the Company completed the acquisition of Plaza Bancorp (“Plaza”), the holding company of Plaza Bank, a California-chartered bank with $1.3 billion in total assets, $1.1 billion in gross loans and $1.1 billion in total deposits at October 31, 2017. Pursuant to the terms of the merger agreement, each outstanding share of Plaza 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 $246 million , which included approximately $6.5 million of aggregate cash consideration payable to holders of unexercised options and warrants exercisable for shares of Plaza common stock, and 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 $123 million was recognized in the Plaza 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 assets acquired and liabilities assumed of Plaza as of November 1, 2017 and the fair value adjustments and amounts recorded by the Company in 2017 under the acquisition method of accounting: Plaza Fair Value Adjustments Fair Value ASSETS ACQUIRED (dollars in thousands) 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 (194 ) 7,195 Core deposit intangible 198 10,575 10,773 Deferred tax assets 11,849 (6,343 ) 5,506 Other assets 19,495 (589 ) 18,906 Total assets acquired $ 1,245,740 $ 10,000 $ 1,255,740 LIABILITIES ASSUMED Deposits $ 1,081,727 $ 1,224 $ 1,082,951 Borrowings 40,755 397 41,152 Other liabilities 8,956 (451 ) 8,505 Total liabilities assumed 1,131,438 1,170 1,132,608 Excess of assets acquired over liabilities assumed $ 114,302 $ 8,830 123,132 Consideration paid 245,761 Goodwill recognized $ 122,629 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 $1.3 million related to core deposit intangibles, deferred tax assets, loans and other assets and liabilities. Heritage Oaks Bancorp Acquisition Effective as of April 1, 2017, the Company completed the acquisition of Heritage Oaks Bancorp ("HEOP"), the holding company of Heritage Oaks Bank, a California-chartered bank (“Heritage Oaks Bank”) with $2.0 billion in total assets, $1.4 billion in gross loans and $1.7 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 million , which included approximately $3.9 million of aggregate cash consideration payable to holders of HEOP 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 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 assets acquired and liabilities assumed of HEOP as of April 1, 2017 and the fair value adjustments and amounts recorded by the Company in 2017 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. In the third quarter of 2017, the Company made a $1.1 million adjustment to deferred tax assets and the deal consideration. During the quarter ended June 30, 2018, the Company finalized its fair values with this acquisition. The Company accounted for these transactions under the acquisition method of accounting in accordance with ASC 805, Business Combinations , which requires purchased assets and liabilities assumed to be recorded at their respective fair values at the date of acquisition. The loan portfolios of Plaza and HEOP were recorded at fair value at the date of each acquisition. A valuation of Plaza and HEOP's loan portfolio was performed as of the acquisition dates to assess the fair value of the loan portfolio. The loan portfolios were both segmented into two groups; loan with credit deterioration and loans without credit deterioration, and then split 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. The Company also determined the fair value of the core deposit intangible, securities and deposits with the assistance of third-party valuations as well as the fair value of other real estate owned ("OREO') was based on recent appraisals of the properties. The core deposit intangible on non-maturing deposits 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. Since the fair value of intangible assets are 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 tax benefits resulting from the asset purchase. The value of the benefit is the present value over the period of the tax benefit, 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. For loans acquired from Plaza 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 Plaza HEOP (dollars in thousands) Contractual amounts due $ 1,708,685 $ 1,717,191 Cash flows not expected to be collected 20,152 4,442 Expected cash flows 1,688,533 1,712,749 Interest component of expected cash flows 625,592 348,100 Fair value of acquired loans $ 1,062,941 $ 1,364,649 In accordance with U.S. GAAP, there was no carryover of the allowance for loan losses that had been previously recorded by Plaza and HEOP. The operating results of the Company for the three months ended June 30, 2018 , March 31, 2018 and June 30, 2017 and the six months ended June 30, 2018 and June 30, 2017 include the operating results of Plaza and HEOP since its acquisition date. The following table presents the net interest and other income, net income and earnings per share as if the acquisition of Plaza and HEOP were effective as of January 1, 2017. There were no material, nonrecurring adjustments to the pro forma net interest and other income, net income and earnings per share presented below: Three Months Ended Six Months Ended June 30, March 31, June 30, June 30, 2018 2018 2017 2018 2017 (dollars in thousands) Net interest and other income $ 87,969 $ 86,694 $ 85,210 $ 174,663 $ 163,050 Net income 27,303 28,002 17,710 55,305 31,481 Basic earnings per share 0.59 0.61 0.39 1.20 0.69 Diluted earnings per share 0.58 0.60 0.38 1.18 0.68

Investment Securities

Investment Securities	6 Months Ended
	Jun. 30, 2018
Investments, Debt and Equity Securities [Abstract]
Investment Securities	Investment Securities The amortized cost and estimated fair value of securities were as follows: June 30, 2018 Amortized Cost Unrealized Gain Unrealized Loss Estimated Fair Value (dollars in thousands) Investment securities available-for-sale: Agency $ 41,567 $ — $ (490 ) $ 41,077 Corporate 93,126 433 (1,057 ) 92,502 Municipal bonds 221,806 1,281 (3,186 ) 219,901 Collateralized mortgage obligation: residential 29,747 81 (670 ) 29,158 Mortgage-backed securities: residential 505,817 58 (13,813 ) 492,062 Total investment securities available-for-sale 892,063 1,853 (19,216 ) 874,700 Investment securities held-to-maturity: Mortgage-backed securities: residential 30,854 — (838 ) 30,016 Other 1,111 — — 1,111 Total investment securities held-to-maturity 31,965 — (838 ) 31,127 Total investment securities $ 924,028 $ 1,853 $ (20,054 ) $ 905,827 December 31, 2017 Amortized Cost Unrealized Gain Unrealized Loss Estimated Fair Value (dollars in thousands) Investment securities available-for-sale: Agency $ 47,051 $ 236 $ (78 ) $ 47,209 Corporate 78,155 1,585 (194 ) 79,546 Municipal bonds 228,929 3,942 (743 ) 232,128 Collateralized mortgage obligation: residential 33,984 132 (335 ) 33,781 Mortgage-backed securities: residential 398,664 266 (4,165 ) 394,765 Total investment securities available-for-sale 786,783 6,161 (5,515 ) 787,429 Investment securities held-to-maturity: Mortgage-backed securities: residential 17,153 — (209 ) 16,944 Other 1,138 — — 1,138 Total investment securities held-to-maturity 18,291 — (209 ) 18,082 Total investment securities $ 805,074 $ 6,161 $ (5,724 ) $ 805,511 Unrealized gains and losses on investment securities available-for-sale are recognized in stockholders’ equity as accumulated other comprehensive income or loss. At June 30, 2018 , the Company had an accumulated other comprehensive loss of $17.4 million , or $12.2 million net of tax, compared to an accumulated other comprehensive loss of $646,000 , or $415,000 net of tax, at December 31, 2017 . At June 30, 2018 , mortgage-backed securities ("MBS") with an estimated par value of $46.3 million and a fair value of $47.1 million were pledged as collateral for the Bank’s two repurchase agreements, which totaled $18.5 million , and homeowner’s association (“HOA”) reverse repurchase agreements, which totaled $23.0 million . At December 31, 2017, MBS with an estimated par value of $55.6 million and a fair value of $57.0 million were pledged as collateral for the Bank’s three repurchase agreements, which totaled $28.5 million , and HOA reverse repurchase agreements, which totaled $17.6 million . At June 30, 2018 and December 31, 2017 , there were no holdings of securities of any one issuer, other than the U.S. Government and its agencies, in an amount greater than 10% of stockholders' equity. The Company reviews individual securities classified as available-for-sale to determine whether a decline in fair value below the amortized cost basis is temporary because (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 ("OTTI") 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. The Company did not realize any OTTI losses for the three months ended June 30, 2018 , March 31, 2018 or June 30, 2017 , or the six months ended June 30, 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 loss position. June 30, 2018 Less than 12 Months 12 Months or Longer Total Number Fair Value Gross Unrealized Holding Losses Number Fair Value Gross Unrealized Holding Losses Number Fair Value Gross Unrealized Holding Losses (dollars in thousands) Investment securities available-for-sale: Agency 19 $ 39,828 $ (471 ) 1 $ 1,249 $ (19 ) 20 $ 41,077 $ (490 ) Corporate 16 48,326 (880 ) 2 6,014 (177 ) 18 54,340 (1,057 ) Municipal bonds 163 116,648 (2,070 ) 32 16,019 (1,116 ) 195 132,667 (3,186 ) Collateralized mortgage obligation: residential 7 14,762 (400 ) 3 7,658 (270 ) 10 22,420 (670 ) Mortgage-backed securities: residential 100 348,704 (8,550 ) 49 113,184 (5,263 ) 149 461,888 (13,813 ) Total investment securities available-for-sale 305 568,268 (12,371 ) 87 144,124 (6,845 ) 392 712,392 (19,216 ) Investment securities held-to-maturity: Mortgage-backed securities: residential 2 1,111 — — — — 2 1,111 — Other 6 24,063 (585 ) 1 5,953 (253 ) 7 30,016 (838 ) Total investment securities held-to-maturity 8 25,174 (585 ) 1 5,953 (253 ) 9 31,127 (838 ) Total investment securities 313 $ 593,442 $ (12,956 ) 88 $ 150,077 $ (7,098 ) 401 $ 743,519 $ (20,054 ) December 31, 2017 Less than 12 Months 12 Months or Longer Total Number Fair Gross Number Fair Gross Number Fair Gross (dollars in thousands) Investment securities available-for-sale: Agency 6 $ 13,754 $ (78 ) — $ — $ — 6 $ 13,754 $ (78 ) Corporate 4 10,079 (64 ) 2 6,076 (130 ) 6 16,155 (194 ) Municipal bonds 103 61,313 (268 ) 30 15,658 (475 ) 133 76,971 (743 ) Collateralized mortgage obligation: residential 5 13,971 (149 ) 3 8,943 (186 ) 8 22,914 (335 ) Mortgage-backed securities: residential 66 220,951 (1,600 ) 41 110,062 (2,565 ) 107 331,013 (4,165 ) Total investment securities available-for-sale 184 320,068 (2,159 ) 76 140,739 (3,356 ) 260 460,807 (5,515 ) Investment securities held-to-maturity: Mortgage-backed securities: residential 2 10,745 (133 ) 1 6,198 (76 ) 3 16,943 (209 ) Total investment securities held-to-maturity 2 10,745 (133 ) 1 6,198 (76 ) 3 16,943 (209 ) Total investment securities 186 $ 330,813 $ (2,292 ) 77 $ 146,937 $ (3,432 ) 263 $ 477,750 $ (5,724 ) The amortized cost and estimated fair value of investment securities at June 30, 2018 , by contractual maturity are shown in the table below. One Year or Less More than One Year to Five Years More than Five Years to Ten Years More than Ten Years 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: Agency $ — $ — $ — $ — $ 18,560 $ 18,371 $ 23,007 $ 22,706 $ 41,567 $ 41,077 Corporate — — — — 93,126 92,502 — — 93,126 92,502 Municipal bonds 3,806 3,807 36,076 36,038 68,094 66,741 113,830 113,315 221,806 219,901 Collateralized mortgage obligation: residential — — — — 934 936 28,813 28,222 29,747 29,158 Mortgage-backed securities: residential — — 2,066 2,002 119,439 117,063 384,312 372,997 505,817 492,062 Total investment securities available-for-sale 3,806 3,807 38,142 38,040 300,153 295,613 549,962 537,240 892,063 874,700 Investment securities held-to-maturity: Mortgage-backed securities: residential — — — — — — 30,854 30,016 30,854 30,016 Other — — — — — — 1,111 1,111 1,111 1,111 Total investment securities held-to-maturity — — — — — — 31,965 31,127 31,965 31,127 Total investment securities $ 3,806 $ 3,807 $ 38,142 $ 38,040 $ 300,153 $ 295,613 $ 581,927 $ 568,367 $ 924,028 $ 905,827 During the three months ended June 30, 2018 and June 30, 2017 , the Company recognized gross gains on sales of available-for-sale securities in the amount of $330,000 and $2.1 million , respectively. During the three months ended March 31, 2018 , the Company recognized gross gains on sales of available-for-sale securities in the amount of $6,000 , which represents adjustments to 2017 year end investment sales that settled in January 2018. The Company did not recognize any gross losses on the sales of available-for sale securities during the three months ended June 30, 2018 and March 31, 2018 . The Company recognized gross losses on the sales of available-for-sale securities in the amount of $50,000 during the three months ended June 30, 2017 . The Company had net proceeds from the sale of available-for-sale securities of $16.2 million , $6,000 and $215 million during the the three months ended June 30, 2018 , March 31, 2018 and June 30, 2017 . During the six months ended June 30, 2018 and June 30, 2017 , the Company recognized gross gains on sales of available-for-sale securities in the amount of $336,000 and $2.1 million , respectively. During the six months ended June 30, 2018 , the Company did not recognize any gross losses on the sales of available-for sale securities. During the six months ended June 30, 2017 , the Company recognized gross losses on sales of available-for-sale securities in the amount of $50,000 . The Company had net proceeds from the sale of available-for-sale securities of $16.21 million during the six months ended June 30, 2018 and $215 million during the six months ended June 30, 2017 . FHLB, FRB and other stock At June 30, 2018 , the Company had $17.3 million in Federal Home Loan Bank of San Francisco (“FHLB”) stock, $33.2 million in Federal Reserve Bank of San Francisco (“FRB”) stock, and $32.2 million in other stock, all carried at cost. During the three months ended June 30, 2018 and December 31, 2017 , the FHLB did not repurchase any of the Company’s excess FHLB stock through their stock repurchase program. The Company evaluates its investments in FHLB, FRB and other stock for impairment periodically, including their capital adequacy and overall financial condition. No impairment losses have been recorded through June 30, 2018 .

Loans Held for Investment

Loans Held for Investment	6 Months Ended
	Jun. 30, 2018
Receivables [Abstract]
Loans Held for Investment	Loans Held for Investment The following table sets forth the composition of our loan portfolio in dollar amounts at the dates indicated: June 30, 2018 December 31, 2017 (dollars in thousands) Business loans Commercial and industrial $ 1,102,586 $ 1,086,659 Franchise 708,957 660,414 Commercial owner occupied (1) 1,310,722 1,289,213 SBA 176,696 185,514 Agribusiness 136,962 116,066 Total business loans 3,435,923 3,337,866 Real estate loans Commercial non-owner occupied 1,219,747 1,243,115 Multi-family 805,494 794,384 One-to-four family (2) 249,495 270,894 Construction 321,423 282,811 Farmland 136,548 145,393 Land 30,246 31,233 Total real estate loans 2,762,953 2,767,830 Consumer loans Consumer loans 81,973 92,931 Gross loans held for investment (3) 6,280,849 6,198,627 Deferred loan origination costs/(fees) and premiums/(discounts), net (3,263 ) (2,403 ) Loans held for investment 6,277,586 6,196,224 Allowance for loan losses (31,747 ) (28,936 ) Loans held for investment, net $ 6,245,839 $ 6,167,288 Loans held for sale, at lower of cost or fair value $ 13,879 $ 23,426 ______________________________ (1) Secured by real estate. (2) Includes second trust deeds. (3) Total gross loans held for investment for June 30, 2018 and December 31, 2017 are net of the unaccreted fair value net purchase discounts of $22.2 million and $29.1 million , respectively. Loans Serviced for Others The Company generally retains the servicing rights of the guaranteed portion of Small Business Administration ("SBA") loans sold, for which the Company records a servicing asset at fair value within its other assets category. At June 30, 2018 and December 31, 2017 , the servicing asset totaled $8.7 million and $8.8 million , respectively, and was included in its other assets. Servicing rights are evaluated for impairment based upon the fair value of the rights as compared to the carrying amount. Impairment is recognized through a valuation allowance, to the extent the fair value is less than the carrying amount. At June 30, 2018 and December 31, 2017 , 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 $613 million at June 30, 2018 and $635 million at December 31, 2017 . Concentration of Credit Risk As of June 30, 2018 , the Company’s loan portfolio was primarily collateralized by various forms of real estate and business assets located predominately in California. The Company’s loan portfolio contains concentrations of credit in multi-family real estate, commercial non-owner occupied real estate and commercial owner occupied real estate and business loans. The Bank maintains policies approved by the Bank’s Board of Directors (the “Bank Board”) that address these concentrations and continues to diversify its loan portfolio through loan originations, purchases and sales to meet approved concentration levels. While management believes that the collateral presently securing these loans is adequate, there can be no assurances that a significant deterioration in the California real estate market or economy would not expose the Company to significantly greater credit risk. Under applicable laws and regulations, the Bank may not make secured loans to one borrower in excess of 25% of the Bank’s unimpaired capital plus surplus and likewise in excess of 15% of the Bank's unimpaired capital plus surplus for unsecured loans. These loans-to-one borrower limitations result in a dollar limitation of $353 million for secured loans and $212 million for unsecured loans at June 30, 2018 . At June 30, 2018 , the Bank’s largest aggregate outstanding balance of loans to one borrower was $65.8 million of secured credit. Credit Quality and Credit Risk Management 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 quality and chooses which risks it is willing to accept. 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. 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 underwriters ensure key risk factors are analyzed with nearly all underwriting including a comprehensive global cash flow analysis of the prospective borrowers. Credit risk is 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 regulatory agencies. The assignment of risk grades allows the Company to, among other things; identify the risk associated with each credit in the portfolio, and to provide a basis for estimating credit losses inherent in the portfolio. Risk grades are reviewed regularly 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 a level of credit quality, in which no well-defined deficiency or weakness exists. • Special Mention assets do not currently expose the Bank to a sufficient risk to warrant classification in one of the adverse categories, but possess correctable deficiencies or potential weaknesses deserving management’s close attention. • Substandard assets are inadequately protected by the current net worth and paying capacity of the obligor or of the collateral pledged, if any. These assets are characterized by the distinct possibility that the Bank will sustain some loss if the deficiencies are not corrected. OREO acquired from foreclosure is also classified as Substandard. • Doubtful credits have all the weaknesses inherent in Substandard credits, with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions, and values, highly questionable and improbable. • Loss assets are those that are considered uncollectible and of such little value that their continuance as assets is not warranted. Amounts classified as loss are promptly charged off. The Bank's portfolio managers also manage loan performance risks, collections, workouts, bankruptcies and foreclosures. 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 (“ALLL”) 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 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 grading as of the periods indicated: Credit Risk Grades Pass Special Mention Substandard Doubtful Total Gross Loans June 30, 2018 (dollars in thousands) Business loans Commercial and industrial $ 1,080,580 $ 9,952 $ 12,054 $ — $ 1,102,586 Franchise 708,748 — 209 — 708,957 Commercial owner occupied 1,296,927 641 13,154 — 1,310,722 SBA 181,347 1,096 3,189 — 185,632 Agribusiness 128,709 — 8,253 — 136,962 Real estate loans Commercial non-owner occupied 1,222,448 — 2,242 — 1,224,690 Multi-family 803,977 703 814 — 805,494 One-to-four family 247,452 136 1,907 — 249,495 Construction 321,423 — — — 321,423 Farmland 136,422 — 126 — 136,548 Land 30,036 — 210 — 30,246 Consumer loans Consumer loans 81,837 — 136 — 81,973 Totals $ 6,239,906 $ 12,528 $ 42,294 $ — $ 6,294,728 Credit Risk Grades Pass Special Substandard Doubtful Total Gross December 31, 2017 (dollars in thousands) Business loans Commercial and industrial $ 1,063,452 $ 8,163 $ 15,044 $ — $ 1,086,659 Franchise 660,414 — — — 660,414 Commercial owner occupied 1,273,381 654 21,180 — 1,295,215 SBA 199,468 1 3,469 — 202,938 Agribusiness 108,143 4,079 3,844 — 116,066 Real estate loans Commercial non-owner occupied 1,242,045 — 1,070 — 1,243,115 Multi-family 794,156 — 228 — 794,384 One-to-four family 268,776 154 1,964 — 270,894 Construction 282,294 517 — — 282,811 Farmland 144,234 44 1,115 — 145,393 Land 30,979 — 254 — 31,233 Consumer loans Consumer loans 92,794 — 137 — 92,931 Totals $ 6,160,136 $ 13,612 $ 48,305 $ — $ 6,222,053 The following tables set forth delinquencies in the Company’s loan portfolio at the dates indicated: Days Past Due Current 30-59 60-89 90+ Total Gross Loans Non-accruing June 30, 2018 (dollars in thousands) Business loans Commercial and industrial $ 1,100,623 $ 1,863 $ — $ 100 $ 1,102,586 $ 1,062 Franchise 708,748 — — 209 708,957 209 Commercial owner occupied 1,310,722 — — — 1,310,722 — SBA 183,835 488 — 1,309 185,632 1,423 Agribusiness 136,962 — — — 136,962 — Real estate loans Commercial non-owner occupied 1,222,694 706 1,290 — 1,224,690 1,290 Multi-family 804,905 — — 589 805,494 589 One-to-four family 248,608 526 — 361 249,495 1,445 Construction 321,423 — — — 321,423 — Farmland 136,548 — — — 136,548 — Land 30,240 — — 6 30,246 6 Consumer loans Consumer loans 81,973 — — — 81,973 15 Totals $ 6,287,281 $ 3,583 $ 1,290 $ 2,574 $ 6,294,728 $ 6,039 Days Past Due Current 30-59 60-89 90+ Total Gross Loans Non-accruing December 31, 2017 (dollars in thousands) Business loans Commercial and industrial $ 1,085,770 $ 84 $ 570 $ 235 $ 1,086,659 $ 1,160 Franchise 660,414 — — — 660,414 — Commercial owner occupied 1,291,255 3,474 486 — 1,295,215 97 SBA 200,821 177 — 1,940 202,938 1,201 Agribusiness 116,066 — — — 116,066 — Real estate loans Commercial non-owner occupied 1,243,115 — — — 1,243,115 — Multi-family 792,603 1,781 — — 794,384 — One-to-four family 269,725 354 — 815 270,894 817 Construction 282,811 — — — 282,811 — Farmland 145,393 — — — 145,393 — Land 31,141 83 — 9 31,233 9 Consumer loans Consumer loans 92,880 11 — 40 92,931 — Totals $ 6,211,994 $ 5,964 $ 1,056 $ 3,039 $ 6,222,053 $ 3,284 Impaired Loans The Company considers a loan to be impaired when, based on current information and events, it is probable that 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, or determined by management to be collateral dependent, or when the borrower files bankruptcy or is granted a troubled debt restructuring (“TDR”). 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 such time 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. The following tables provide a summary of the Company’s investment in impaired loans as of the period indicated: Impaired Loans Unpaid Principal Balance Recorded Investment With Specific Allowance Without Specific Allowance Specific Allowance for Impaired Loans (dollars in thousands) June 30, 2018 Business loans Commercial and industrial $ 1,523 $ 1,062 $ — $ 1,062 $ — Franchise 205 209 — 209 — SBA 4,926 1,423 — 1,423 — Real estate loans Commercial non-owner occupied 1,287 1,290 — 1,290 — Multi-family 589 589 — 589 — One-to-four family 1,502 1,445 — 1,445 — Land 34 6 — 6 — Consumer loans Consumer loans 16 15 — 15 — Totals $ 10,082 $ 6,039 $ — $ 6,039 $ — Impaired Loans Unpaid Principal Balance Recorded Investment With Specific Allowance Without Specific Allowance Specific Allowance for Impaired Loans (dollars in thousands) December 31, 2017 Business loans Commercial and industrial $ 1,585 $ 1,160 $ — $ 1,160 $ — Commercial owner occupied 98 97 97 — 55 SBA 4,329 1,201 — 1,201 — Real estate loans One-to-four family 849 817 — 817 — Land 35 9 — 9 — Totals $ 6,896 $ 3,284 $ 97 $ 3,187 $ 55 Impaired Loans Three Months Ended June 30, 2018 March 31, 2018 June 30, 2017 Average Recorded Investment Interest Income Recognized (1) Average Recorded Investment Interest Income Recognized (1) Average Recorded Investment Interest Income Recognized (1) (dollars in thousands) Business loans Commercial and industrial $ 1,272 $ — $ 1,181 $ — $ 7 $ — Franchise 70 — — — — — Commercial owner occupied 2,317 — 3,475 — 125 2 SBA 1,360 — 1,241 — 222 4 Real estate loans Commercial non-owner occupied 430 — — — — — Multi-family 589 — 821 — — — One-to-four family 1,343 — 1,024 — 105 3 Construction — — — — — — Land 6 — 8 — 12 1 Consumer loans Consumer loans 15 $ — 94 — — — Totals $ 7,402 $ — $ 7,844 $ — $ 471 $ 10 (1) Cash basis and accrual basis is materially the same. Impaired Loans Six Months Ended June 30, 2018 2017 Average Recorded Investment Interest Income Recognized (1) Average Recorded Investment Interest Income Recognized (1) (dollars in thousands) Business loans: Commercial and industrial $ 1,226 $ — $ 200 $ 5 Franchise 35 — — — Commercial owner occupied 2,896 — 192 5 SBA 1,300 — 307 9 Real estate loans: Commercial non-owner occupied 215 — — — Multi-family 705 — — — One-to-four family 1,184 — 116 6 Land 7 — 14 2 Consumer loans: Consumer loans 55 — — — Totals $ 7,623 $ — $ 829 $ 27 (1) Cash basis and accrual basis is materially the same. The following table provides additional detail on the components of impaired loans at the period end indicated: June 30, 2018 December 31, 2017 (dollars in thousands) Nonaccruing loans $ 6,039 $ 3,284 Accruing loans — — Total impaired loans $ 6,039 $ 3,284 When loans are placed on nonaccrual status, all accrued interest and outstanding 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 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 interest. The Company had impaired loans on nonaccrual status of $6.0 million at June 30, 2018 and $3.3 million at December 31, 2017 . The Company had no loans 90 days or more past due and still accruing at June 30, 2018 , compared to $1.8 million at December 31, 2017 . There were no TDRs at June 30, 2018 and $97,000 at December 31, 2017 . In addition, the Company had no consumer mortgage loans collateralized by residential real estate property for which formal foreclosure proceedings were in process as of June 30, 2018 . This compares to $73,000 at December 31, 2017 . Purchased Credit Impaired Loans The Company has purchased loans, for which there was, at acquisition, evidence of deterioration of credit quality since origination and for which it was probable, at acquisition, that all contractually required payments would not be collected. The carrying amount of those loans is as follows: June 30, 2018 December 31, 2017 (dollars in thousands) Business loans Commercial and industrial $ 3,026 $ 3,310 Commercial owner occupied 769 1,262 SBA 11 1,802 Real estate loans Commercial non-owner occupied 1,247 1,650 One-to-four family — 255 Construction — 517 Land 79 83 Consumer loans 8 10 Total purchase credit impaired $ 5,140 $ 8,889 On each acquisition date, the amount by which the undiscounted expected cash flows of the purchased credit impaired loans exceed the estimated fair value of the loan is the “accretable yield.” The accretable yield is measured at each financial reporting date and represents the difference between the remaining undiscounted expected cash flows and the current carrying value of the purchased credit impaired loan. At June 30, 2018 , the Company had $5.1 million of purchased credit impaired loans, of which none were placed on nonaccrual status. The following table summarizes the accretable yield on the purchased credit impaired loans for the three and six month periods indicated. Three Months Ended Six Months Ended June 30, March 31, June 30, June 30, 2018 2018 2017 2018 2017 (dollars in thousands) Balance at the beginning of period $ 1,709 $ 3,019 $ 3,601 $ 3,019 $ 3,747 Additions — — 2,036 — 2,036 Accretion (270 ) (236 ) (712 ) (506 ) (1,341 ) Payoffs 32 (1,850 ) — (1,818 ) — Reclassification from (to) nonaccretable difference 2 776 (1,428 ) 778 (945 ) Balance at the end of period $ 1,473 $ 1,709 $ 3,497 $ 1,473 $ 3,497

Allowance for Loan Losses

Allowance for Loan Losses	6 Months Ended
	Jun. 30, 2018
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 actual 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 the loss emergence period extending from 1 year to 1.4 years . Adjustments to those base factors are made for relevant internal and external factors. Those factors may include: • Changes in national, regional and local economic conditions, including trends in real estate values and the interest rate environment, • Changes in the nature and volume of the loan portfolio, including new types of lending, • Changes in volume and severity of past due loans, the volume of nonaccrual loans and the volume and severity of adversely classified or graded loans, and • The existence and effect of concentrations of credit, and changes in the level of such concentrations. 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 three and six months ended for the periods indicated: Three Months Ended June 30, 2018 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, March 31, 2018 $ 9,492 $ 6,095 $ 791 $ 2,814 $ 2,105 $ 1,337 $ 592 $ 745 $ 5,075 $ 234 $ 1,172 $ 50 $ 30,502 Charge-offs (246 ) — — (27 ) — — — — — — — — (273 ) Recoveries 138 — 16 9 — — — 1 — — — 1 165 Provisions for (reduction in) loan losses 780 86 330 (221 ) 589 113 (29 ) (48 ) (266 ) 171 (200 ) 48 1,353 Balance, June 30, 2018 $ 10,164 $ 6,181 $ 1,137 $ 2,575 $ 2,694 $ 1,450 $ 563 $ 698 $ 4,809 $ 405 $ 972 $ 99 $ 31,747 Six Months Ended June 30, 2018 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 (911 ) — — (56 ) — — — — — — — (52 ) (1,019 ) Recoveries 163 — 24 35 — — — 1 — — — 1 224 Provisions for (reduction in) loan losses 1,191 384 346 (294 ) 1,403 184 (44 ) (106 ) 240 268 (21 ) 55 3,606 Balance, June 30, 2018 $ 10,164 $ 6,181 $ 1,137 $ 2,575 $ 2,694 $ 1,450 $ 563 $ 698 $ 4,809 $ 405 $ 972 $ 99 $ 31,747 Amount of allowance attributed to: Specifically evaluated impaired loans $ — $ — $ — $ — $ — $ — $ — $ — $ — $ — $ — $ — $ — General portfolio allocation 10,164 6,181 1,137 2,575 2,694 1,450 563 698 4,809 405 972 99 31,747 Loans individually evaluated for impairment 1,062 209 — 1,423 — 1,290 589 1,445 — — 6 15 6,039 Specific reserves to total loans individually evaluated for impairment — % — % — % — % — % — % — % — % — % — % — % — % — % Loans collectively evaluated for impairment $ 1,101,524 $ 708,748 $ 1,310,722 $ 175,273 $ 136,962 $ 1,218,457 $ 804,905 $ 248,050 $ 321,423 $ 136,548 $ 30,240 $ 81,958 $ 6,274,810 General reserves to total loans collectively evaluated for impairment 0.92 % 0.87 % 0.09 % 1.47 % 1.97 % 0.12 % 0.07 % 0.28 % 1.50 % 0.30 % 3.21 % 0.12 % 0.51 % Total gross loans held for investment $ 1,102,586 $ 708,957 $ 1,310,722 $ 176,696 $ 136,962 $ 1,219,747 $ 805,494 $ 249,495 $ 321,423 $ 136,548 $ 30,246 $ 81,973 $ 6,280,849 Total allowance to gross loans held for investment 0.92 % 0.87 % 0.09 % 1.46 % 1.97 % 0.12 % 0.07 % 0.28 % 1.50 % 0.30 % 3.21 % 0.12 % 0.51 % Three Months Ended June 30, 2017 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, March 31, 2017 $ 6,949 $ 4,474 $ 1,232 $ 1,145 $ — $ 1,847 $ 2,803 $ 373 $ 4,027 — $ 204 $ 21 $ 23,075 Charge-offs (110 ) — — — — — — — — — — — (110 ) Recoveries 33 — 70 81 — — — 1 — — — 1 186 Provisions for (reduction in) loan losses 772 893 (630 ) 1,293 206 (643 ) (2,192 ) 350 1,009 28 755 63 1,904 Balance, June 30, 2017 $ 7,644 $ 5,367 $ 672 $ 2,519 $ 206 $ 1,204 $ 611 $ 724 $ 5,036 $ 28 $ 959 $ 85 $ 25,055 Six Months Ended June 30, 2017 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, 2016 $ 6,362 $ 3,845 $ 1,193 $ 1,039 $ — $ 1,715 $ 2,927 $ 365 $ 3,632 — $ 198 $ 20 $ 21,296 Charge-offs (862 ) — — (8 ) — — — — — — — — (870 ) Recoveries 55 — 82 83 — — — 2 — — — 1 223 Provisions for (reduction in) loan losses 2,089 1,522 (603 ) 1,405 206 (511 ) (2,316 ) 357 1,404 28 761 64 4,406 Balance, June 30, 2017 $ 7,644 $ 5,367 $ 672 $ 2,519 $ 206 $ 1,204 $ 611 $ 724 $ 5,036 $ 28 $ 959 $ 85 $ 25,055 Amount of allowance attributed to: Specifically evaluated impaired loans $ — $ — $ — $ — $ — $ — $ — $ — $ — — $ — $ — $ — General portfolio allocation 7,644 5,367 672 2,519 206 1,204 611 724 5,036 28 959 85 25,055 Loans individually evaluated for impairment — — 206 73 — — — 104 — — 12 — 395 Specific reserves to total loans individually evaluated for impairment — % — % — % — % — % — % — % — % — % — — % — % — % Loans collectively evaluated for impairment $ 733,852 $ 565,415 $ 729,270 $ 101,311 $ 98,842 $ 1,095,184 $ 746,547 $ 321,944 $ 289,600 136,587 $ 31,787 $ 7,309 $ 4,857,648 General reserves to total loans collectively evaluated for impairment 1.04 % 0.95 % 0.09 % 2.49 % 0.21 % 0.11 % 0.08 % 0.22 % 1.74 % 0.02 % 3.02 % 1.16 % 0.52 % Total gross loans held for investment $ 733,852 $ 565,415 $ 729,476 $ 101,384 $ 98,842 $ 1,095,184 $ 746,547 $ 322,048 $ 289,600 136,587 $ 31,799 $ 7,309 $ 4,858,043 Total allowance to gross loans held for investment 1.04 % 0.95 % 0.09 % 2.48 % 0.21 % 0.11 % 0.08 % 0.22 % 1.74 % 0.02 % 3.02 % 1.16 % 0.52 %

Subordinated Debentures

Subordinated Debentures	6 Months Ended
	Jun. 30, 2018
Debt Disclosure [Abstract]
Subordinated Debentures	Subordinated Debentures In August 2014, the Corporation issued $60 million in aggregate principal amount of 5.75% Subordinated Notes Due 2024 (the “Notes”) in a private placement transaction to institutional accredited investors (the “Private Placement”). The Corporation contributed $50 million of net proceeds from the Private Placement to the Bank to support general corporate purposes. The Notes bear interest at an annual fixed rate of 5.75% , and the first interest payment on the Notes occurred on March 3rd, 2015, and will continue to be payable semiannually each March 3rd and September 3rd until September 3, 2024. The Notes can only be redeemed, partially or in whole, 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). Outstanding principal and accrued and unpaid interest are due upon early redemption. 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 senior deposit rating of A- for the Bank. These ratings were reaffirmed by KBRA on October 27, 2017. In March 2004, the Corporation issued $10.3 million of Floating Rate Junior Subordinated Deferrable Interest Debentures (the “Subordinated Debentures”) to PPBI Trust I, statutory trust created under the laws of the State of Delaware. The Subordinated Debentures are subordinated to effectively all borrowings of the Corporation and are due and payable on April 6, 2034. Interest is payable quarterly on the Subordinated Debentures at three-month LIBOR plus 2.75% per annum, for an effective rate of 5.10% per annum, as of June 30, 2018 . The Subordinated Debentures may be redeemed, in part or whole, on or after April 7, 2009 at the option of the Corporation, at par. The Subordinated Debentures can also be redeemed at par if certain events occur that impact the tax treatment or the capital treatment of the issuance. The Corporation also purchased a 3% minority interest totaling $310,000 in PPBI Trust I. The balance of equity of PPBI Trust I is comprised of mandatorily redeemable securities (“Trust Preferred Securities”) and is included in the Corporation's other assets category. PPBI Trust I sold $10,000,000 of Trust Preferred Securities to investors in a private offering. 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 4.03% per annum as of June 30, 2018 . At June 30, 2018 , the carrying value of these debentures was $4.0 million , which reflects purchase accounting fair value adjustments of $1.3 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. At June 30, 2018 , the carrying value of Mission Community Capital Trust I and Santa Lucia Bancorp (CA) Capital Trust were $2.8 million and $3.8 million , respectively, which reflects purchase accounting fair value adjustments of $316,000 and $1.4 million , respectively. Interest is payable quarterly at three-month LIBOR plus 2.95% per annum, for an effective rate of 5.30% per annum as of June 30, 2018 for Mission Community Capital Trust I. Interest is payable quarterly at three-month LIBOR plus 1.48% per annum, for an effective rate of 3.83% per annum as of June 30, 2018 for Santa Lucia Bancorp (CA) Capital Trust. These three debentures are callable by the Corporation at par. On November 1, 2017, as part of the Plaza acquisition, the Company assumed three subordinated notes totaling $25 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. The Corporation is not allowed to consolidate any trust preferred securities into the Company’s consolidated financial statements. The resulting effect on the Company’s consolidated financial statements is to report only the subordinated debentures relating to trust preferred securities as a component of the Company’s liabilities.

Earnings Per Share

Earnings Per Share	6 Months Ended
	Jun. 30, 2018
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share Basic earnings per share excludes dilution and is computed by dividing net income or loss available to common stockholders by the weighted average number of common shares outstanding for the period, excluding common shares in treasury. Diluted earnings per share reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock or resulted from the issuance of common stock that would then share in earnings and excludes common shares in treasury. Stock options exercisable for shares of common stock are excluded from the computation of diluted earnings per share if they are anti-dilutive due to their exercise price exceeding the average market price during the period. 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. The following table sets forth the weighted average number of stock options excluded for the periods indicated: Three Months Ended Six Months Ended June 30, March 31, June 30, June 30, 2018 2018 2017 2018 2017 Weighted average stock options excluded — — 15,531 — 7,389 The following tables set forth the Company’s earnings per share calculations for the periods indicated: Three Months Ended June 30, 2018 March 31, 2018 June 30, 2017 Net Shares Per Share Net Shares Per Share Net Shares Per Share (dollars in thousands, except per share data) Net income $ 27,303 $ 28,002 $ 14,176 Basic income available to common stockholders 27,303 46,053,077 $ 0.59 28,002 45,893,496 $ 0.61 14,176 39,586,524 $ 0.36 Dilutive effect of share-based compensation — 649,891 — 758,563 — 680,696 Diluted income available to common stockholders plus assumed conversions $ 27,303 46,702,968 $ 0.58 $ 28,002 46,652,059 $ 0.60 $ 14,176 40,267,220 $ 0.35 Six Months Ended 2018 2017 Net Shares Per Share Net Shares Per Share (dollars in thousands, except per share data) Net income $ 55,305 $ 23,697 Basic income available to common stockholders 55,305 45,973,727 $ 1.20 23,697 33,591,040 $ 0.71 Effect of dilutive stock options and warrants 704,396 676,175 Diluted income available to common stockholders plus assumed conversions $ 55,305 46,678,123 $ 1.18 $ 23,697 34,267,215 $ 0.69

Fair Value of Financial Instrum

Fair Value of Financial Instruments	6 Months Ended
	Jun. 30, 2018
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. 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. 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 independent third-party pricing services, 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. Impaired Loans and Other Real Estate Owned – 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. 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. As such, the Company records impaired loans as Level 3. At June 30, 2018 , substantially all 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 and has concluded no reserves or write-downs are necessary. 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. The fair value estimates presented herein are based on pertinent information available to management as of the periods indicated, representing an exit price. At June 30, 2018 Carrying Amount Level 1 Level 2 Level 3 Estimated Fair Value (dollars in thousands) Assets: Cash and cash equivalents $ 131,468 $ 131,468 $ — $ — $ 131,468 Interest-bearing time deposits with financial institutions 6,633 6,633 — — 6,633 Investments held-to-maturity 31,965 — 31,126 — 31,126 Investment securities available-for-sale 874,700 — 874,700 — 874,700 FHLB, FRB and other stock 82,666 N/A N/A N/A N/A Loans held for sale 13,879 — 14,940 — 14,940 Loans held for investment, net 6,277,586 — — 6,279,915 6,279,915 Derivative asset 3,272 — 3,272 — 3,272 Accrued interest receivable 27,420 27,420 — — 27,420 Liabilities: Deposit accounts 6,308,350 5,139,299 1,160,215 — 6,299,514 FHLB advances 337,638 — 336,504 — 336,504 Other borrowings 41,462 — 41,514 — 41,514 Subordinated debentures 105,253 — 116,004 — 116,004 Derivative liability 3,272 — 3,272 — 3,272 Accrued interest payable 1,151 1,151 — — 1,151 At December 31, 2017 Carrying Amount Level 1 Level 2 Level 3 Estimated Fair Value (dollars in thousands) Assets: Cash and cash equivalents $ 197,164 $ 197,164 $ — $ — $ 197,164 Interest-bearing time deposits with financial institutions 6,633 6,633 — — 6,633 Investments held-to-maturity 18,291 — 18,082 — 18,082 Investment securities available-for-sale 787,429 — 787,429 — 787,429 FHLB, FRB and other stock 65,881 N/A N/A N/A N/A Loans held for sale 23,426 — 23,524 — 23,524 Loans held for investment, net (1) 6,167,288 — — 6,269,366 6,269,366 Derivative asset 1,135 — 1,135 — $ 1,135 Accrued interest receivable 27,060 27,060 — — 27,060 Liabilities: Deposit accounts 6,085,886 5,001,053 1,074,564 — 6,075,617 FHLB advances 490,148 — 489,823 — 489,823 Other borrowings 46,139 — 46,373 — 46,373 Subordinated debentures 105,123 — 115,159 — 115,159 Derivative liability 1,135 — 1,135 — 1,135 Accrued interest payable 2,131 2,131 — — 2,131 (1) The estimated fair value of loans held for investment, net for December 31, 2017 is not based on an exit price assumption. The following fair value hierarchy table presents information about the Company’s financial instruments measured at fair value on a recurring basis at the dates indicated: June 30, 2018 Fair Value Measurement Using Level 1 Level 2 Level 3 Total Fair Value (dollars in thousands) Financial assets Investment securities available-for-sale: Agency $ — $ 41,077 $ — $ 41,077 Corporate — 92,502 — 92,502 Municipal bonds — 219,901 — 219,901 Collateralized mortgage obligation — 29,158 — 29,158 Mortgage-backed securities — 492,062 — 492,062 Total securities available-for-sale $ — $ 874,700 $ — $ 874,700 Derivative assets $ — $ 3,272 $ — $ 3,272 Financial liabilities Derivative liabilities $ — $ 3,272 $ — $ 3,272 December 31, 2017 Fair Value Measurement Using Level 1 Level 2 Level 3 Total Fair Value (dollars in thousands) Financial assets Investment securities available-for-sale: Agency $ — $ 47,209 $ — $ 47,209 Corporate — 79,546 — 79,546 Municipal bonds — 232,128 — 232,128 Collateralized mortgage obligation — 33,781 — 33,781 Mortgage-backed securities — 394,765 — 394,765 Total securities available-for-sale $ — $ 787,429 $ — $ 787,429 Derivative assets $ — $ 1,135 $ — $ 1,135 Financial liabilities Derivative liabilities $ — $ 1,135 $ — $ 1,135 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.

Derivative Instruments

Derivative Instruments	6 Months Ended
	Jun. 30, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments and Hedging Activities Disclosure	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. The Company had swaps with matched terms with an aggregate notional amount of $57.7 million and a fair value of $3.3 million at June 30, 2018 compared with and aggregate notional amount of $58.6 million and a fair value of $1.1 million at December 31, 2017 . 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 in non-interest income. Although changes in the fair value of swap agreements between the Company and borrowers and the Company and other financial institutions offset each other, changes in the credit risk of these counterparties may result in a difference in the fair value of these swap agreements. Offsetting 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 six months ended June 30, 2018 and December 31, 2017 , 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 June 30, 2018 and December 31, 2017 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: June 30, 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 $ 57,710 $ 3,272 $ 57,710 $ 3,272 Total derivative instruments $ 57,710 $ 3,272 $ 57,710 $ 3,272 December 31, 2017 Derivative Assets Derivative Liabilities Notional Fair Value Notional Fair Value (dollars in thousands) Derivative instruments not designated as hedging instruments: Interest rate swap contracts $ 58,599 $ 1,135 $ 58,599 $ 1,135 Total derivative instruments $ 58,599 $ 1,135 $ 58,599 $ 1,135

Balance Sheet Offsetting

Balance Sheet Offsetting	6 Months Ended
	Jun. 30, 2018
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. Financial instruments that are eligible for offset in the consolidated statements of financial condition as of June 30, 2018 are presented in the table below: 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) June 30, 2018 Financial assets: Derivatives not designated as $ 3,272 $ — $ 3,272 $ — $ — $ 3,272 Total $ 3,272 $ — $ 3,272 $ — $ — $ 3,272 Financial liabilities: Derivatives not designated as $ 3,272 $ — $ 3,272 $ — $ — $ 3,272 Total $ 3,272 $ — $ 3,272 $ — $ — $ 3,272 (1) Represents cash collateral held with counterparty bank. Financial instruments that are eligible for offset in the consolidated statements of financial condition as of December 31, 2017 are presented in the table below: 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) December 31, 2017 Financial assets: Derivatives not designated as $ 1,833 $ (698 ) $ 1,135 $ — $ — $ 1,135 Total $ 1,833 $ (698 ) $ 1,135 $ — $ — $ 1,135 Financial liabilities: Derivatives not designated as $ 1,135 $ — $ 1,135 $ — $ — $ 1,135 Total $ 1,135 $ — $ 1,135 $ — $ — $ 1,135 (1) Represents cash collateral held with counterparty bank.

Revenue Recognition

Revenue Recognition	6 Months Ended
	Jun. 30, 2018
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. Revenue from interest on loans and investment securities is accounted on an accrual basis using the interest method, while revenue from other sources is accounted for under other applicable U.S. GAAP as well as ASC 606 - Revenue from Contracts with Customers . Revenue streams within the scope of and accounted for under ASC 606 include: service charges and fees on deposit accounts, debit card interchange fees, 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 non-interest income. The following tables provide a summary of the Company’s revenue streams, including those that are within the scope of ASC 606 and those that are accounted for under other applicable U.S. GAAP: Three Months Ended June 30, 2018 March 31, 2018 June 30, 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) Interest income: Loans $ — $ 85,625 $ — $ 84,173 $ — $ 63,554 Investment securities and other interest-earning assets — 7,074 — 6,654 — 5,179 Total interest income — 92,699 — 90,827 — 68,733 Noninterest income: Loan servicing fees — 292 — 345 — 143 Service charges on deposit accounts 1,057 — 1,150 — 866 — Other service fee income 169 — 146 — 495 — Debit card interchange income 1,090 — 1,036 — 679 — Earnings on bank-owned life insurance — 617 — 611 — 689 Net gain from sales of loans — 3,843 — 2,958 — 2,887 Net gain from sales of investment securities — 330 — 6 — 2,093 Other income 297 456 237 1,177 90 817 Total noninterest income 2,613 5,538 2,569 5,097 2,130 6,629 Total revenues $ 2,613 $ 98,237 $ 2,569 $ 95,924 $ 2,130 $ 75,362 ______________________________ (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. Six Months Ended June 30, 2018 June 30, 2017 Within Scope (1) Out of Scope (2) Within Scope (1) Out of Scope (2) (dollars in thousands) Interest income: Loans $ — $ 169,798 $ — $ 105,990 Investment securities and other interest-earning assets — 13,728 — 8,170 Total interest income — 183,526 — 114,160 Noninterest income: Loan servicing fees — 637 — 365 Service charges on deposit accounts 2,207 — 1,207 — Other service fee income 315 — 874 — Debit card interchange income 2,126 — 746 — Earnings on bank-owned life insurance — 1,228 — 1,025 Net gain from sales of loans — 6,801 — 5,698 Net gain from sales of investment securities — 336 — 2,093 Other income 530 1,637 139 1,295 Total noninterest income 5,178 10,639 2,966 10,476 Total revenues $ 5,178 $ 194,165 $ 2,966 $ 124,636 ______________________________ (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 following provides information concerning the major components of the Company’s revenue: Interest Income Interest income is comprised of interest on loans, investment securities and other interest-earning assets. Interest is recognized using the interest method, which reflects the contractual yield on loans and coupon yield for investment securities. These yields are adjusted for purchase discounts and premiums and net deferred loan origination fees for newly originated loans. Loan Servicing Fees Loan servicing fees generally consist of fees related to servicing of loans for others, as well as the net impact of related serving asset amortization. ASC 606 stipulates that income streams generated through the transfer and servicing of financial instruments shall be accounted for under ASC 860 - Transfers and Servicing and is therefore excluded from the scope of ASC 606. 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. Earnings on Bank-Owned Life Insurance Earnings on bank-owned life insurance relates to the periodic increase in the cash surrender value of bank-owned life insurance policies on certain key employees of the Company for which the Company is the owner and beneficiary of the related policies. This revenue stream is excluded from the scope of ASC 606, and is accounted for under other applicable U.S. GAAP provisions (ASC 325-30). Gains and (Losses) from Sales of Loans and Investment Securities ASC 606 stipulates that gains and (losses) from the periodic sale of loans and investment securities are excluded from ASC 606 and are accounted for under other applicable U.S. GAAP provisions. Other Income Other income generally consists of recoveries on acquired loans, which were fully charged off and had no book value prior to their acquisition. This revenue stream is excluded from the scope of ASC 606 and is accounted for under other applicable U.S. GAAP provisions. Other income also consists of 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 non-financial 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 non-financial 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 June 30, 2018 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.

Subsequent Events

Subsequent Events	6 Months Ended
	Jun. 30, 2018
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events Acquisition of Grandpoint Capital, Inc. On July 2, 2018, the Company announced that it had completed the acquisition, effective as of July 1, 2018, of Grandpoint Capital, Inc. ("Grandpoint"), the holding company of Grandpoint Bank, a California-chartered bank corporation headquartered in Los Angeles, California, with 14 regional offices in Southern California, Arizona and Vancouver, Washington. Pursuant to the terms of the merger agreement, each outstanding share of Grandpoint common stock was converted into the right to receive 0.4750 shares of Corporation's common stock. The value of the total transaction consideration was approximately $629 million , which included approximately $28.0 million in aggregate cash consideration payable to holders of unexercised options exercisable for shares of Grandpoint common stock, and the issuance of 15,758,089 shares of the Corporation's Common Stock, which had a value of $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. The Company expects to record goodwill arising from the acquisition consisting largely of synergies and cost savings resulting from combining the operations of the companies. The amount of goodwill is not expected to be deductible for tax purposes. The fair value of intangible assets and acquired assets and liabilities will be determined as of the acquisition date but are still being evaluated as of the date of these financial statements.

Significant Accounting Polici23

Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2018
Accounting Policies [Abstract]
Recently Issued Accounting Pronouncements	Accounting Standards Adopted in 2018 In February 2018, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU" or "Update") 2018-02, Income Statement-Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income . On December 22, 2017, the Tax Cuts and Jobs Act of 2017 was signed into law, which among other things reduced the maximum federal corporate tax rate from 35% to 21%. This Update addresses concerns about the guidance in current U.S. GAAP that requires deferred tax liabilities and assets to be adjusted for the effect of a change in tax laws or rates with the effect included in income from continuing operations in the reporting period that includes the enactment date. That guidance is applicable even in situations in which the related income tax effects of items in accumulated other comprehensive income ("AOCI") were originally recognized in other comprehensive income (rather than in income from continuing operations). As a result of the adjustment of deferred taxes being required to be included in income from continuing operations, the tax effects of items within accumulated other comprehensive income (referred to as stranded tax effects for purposes of this Update) do not reflect the appropriate tax rate. This Update allows for an election to reclassify between retained earnings and AOCI the impact of the federal income tax rate change. The amendments in this Update are effective for fiscal years beginning after December 15, 2018 and interim periods within those fiscal years. Early adoption of the amendments of this Update is permitted. The Company elected to early adopt in the first quarter of 2018. Accordingly, the Company recorded an increase to AOCI and a decrease to retain earnings of approximately $82,000 for stranded tax effects on investment available for sale securities in the first quarter of 2018. In January 2017, the FASB issued ASU 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business . Under the current implementation guidance in Topic 805, there are three elements of a business-inputs, processes, and outputs. While an integrated set of assets and activities (collectively referred to as a “set”) that is a business usually has outputs, outputs are not required to be present. In addition, all the inputs and processes that a seller uses in operating a set are not required if market participants can acquire the set and continue to produce outputs. The amendments in this Update provide a screen to determine when a set is not a business. The screen requires that when substantially all of the fair value of the gross assets acquired (or disposed of) is concentrated in a single identifiable asset or a group of similar identifiable assets, the set is not a business. This screen reduces the number of transactions that need to be further evaluated. If the screen is not met, the amendments in this Update (1) require that to be considered a business, a set must include, at a minimum, an input and a substantive process that together significantly contribute to the ability to create output and (2) remove the evaluation of whether a market participant could replace missing elements. The amendments provide a framework to assist entities in evaluating whether both an input and a substantive process are present. The framework includes two sets of criteria to consider that depend on whether a set has outputs. Although outputs are not required for a set to be a business, outputs generally are a key element of a business; therefore, the Company has developed more stringent criteria for sets without outputs. Lastly, the amendments in this Update narrow the definition of the term output so that the term is consistent with how outputs are described in Topic 606. Public business entities should apply the amendments in this Update to annual periods beginning after December 15, 2017, including interim periods within those periods. The adoption of this standard did not have a material effect on the Company's operating results or financial condition. In November 2016, the FASB issued ASU 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash . This Update requires that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. Therefore, amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. The amendments in this Update are effective for public business entities for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. The adoption of this standard did not have a material effect on the Company's operating results or financial condition. In August 2016, the FASB issued ASU 2016-15, Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments . This Update provides guidance on eight specific cash flow classification issues, which include: 1) debt prepayment or debt extinguishment costs; 2) settlement of zero-coupon debt instruments or debt with coupon interest rates that are insignificant in relation to the effective interest rate; 3) contingent consideration payments made soon after a business combination; 4) proceeds from the settlement of insurance claims; 5) proceeds from the settlement of corporate-owned life insurance policies, including bank-owned life insurance policies; 6) distributions received from equity method investments; 7) beneficial interest in securitization transactions; and 8) separately identifiable cash flows and the application of the predominance principle. The amendments in this Update are effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. Early adoption is permitted, including adoption in an interim period; however, an entity is required to adopt all of the amendments in the same period. The amendments in this Update should be applied using a retrospective transition method to each period presented. The adoption of this standard did not have a material effect on the Company's operating results or financial condition. In January 2016, the FASB issued ASU 2016-01, Financial Instruments-Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities . Changes made to the current measurement model primarily affect the accounting for equity securities with readily determinable fair values, where changes in fair value will impact earnings instead of other comprehensive income. The accounting for other financial instruments, such as loans, investments in debt securities, and financial liabilities is largely unchanged. This Update also changes the presentation and disclosure requirements for financial instruments including a requirement that public business entities use exit price when measuring the fair value of financial instruments measured at amortized cost for disclosure purposes. This Update is effective for public business entities in fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. The adoption of ASU 2016-01 did not have a material effect on the Company's operating results or financial condition. In accordance with the guidance, the Company measures the fair value of financial instruments reported at amortized cost on the statement of financial condition using the exit price notion. For further details, refer to Note 10 - Fair Value of Financial instruments. ASU 2014-09, Revenue From Contracts With Customers (Topic 606) , ASU 2015-14 Revenue from Contracts with Customers (Topic 606): Deferral of Effective Date , ASU 2016-08 Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net) , ASU 2016-10 Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing , ASU 2016-11 Revenue Recognition (Topic 605) and Derivatives ad Hedging (Topic 815): Rescission of SEC Guidance Because of Accounting Standards Updates 2014-09 and 2014-16 Pursuant to Staff Announcements at the March 3, 2016 EITF Meeting , ASU 2016-12 Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients and ASU 2016-20 Revenue from Contracts with Customers (Topic 606): Technical Corrections and Improvements to Topic 606 . The FASB amended existing guidance related to revenue from contracts with customers, superseding and replacing nearly all existing revenue recognition guidance, including industry-specific guidance, establishing a new control-based revenue recognition model, changing the basis for deciding when revenue is recognized over time or at a point in time, providing new and more detailed guidance on specific topics and expanding and improving disclosures about revenue. In addition, this guidance specifies the accounting for some costs to obtain or fulfill a contract with a customer. The amendments are effective for public entities for annual reporting periods beginning after December 15, 2017. The Company adopted the provisions of ASU 2014-09 and its related amendments effective January 1, 2018 utilizing the modified retrospective transition method and determined the adoption was insignificant to the financial statements. Since the impact upon adoption of ASU 2014-09 and its related amendments was insignificant to the financial statements, a cumulative effect adjustment to retained earnings was not deemed necessary. The Company's review of its various revenue streams indicated that approximately 97% of the Company’s revenue is out of the scope of ASU 2014-09 and its related amendments, including all of the Company’s net interest income and a significant portion of non-interest income. For those revenue streams that are within the scope of ASU 2014-09 and its related amendments, the Company reviewed the associated customer contracts and agreements to determine the appropriate accounting for revenues under those contracts. The Company’s review did not identify any significant changes in the timing of revenue recognition under those contracts within the scope of ASU 2014-09 and its related amendments. Significant revenue streams that are within scope primarily relate to service charges and fees associated customer deposit accounts, as well as fees for various other services the Company provides its customers. As a result of the implementation of ASU 2014-09 and its related amendments, the Company will conduct a detailed review of its revenue streams at least annually, or more frequently if deemed necessary. Recent Accounting Guidance Not Yet Effective In March 2017, the FASB issued ASU 2017-08, Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchase 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. The 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 is not expected to have a material effect on the Company's operating results or financial condition. 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 methodology in current U.S. GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. For public business entities, the Update is effective for annual periods beginning after December 15, 2019 and interim period within those annual periods. The Company is currently evaluating the effects of ASU 2016-13 on its financial statements and disclosures. The Company is in the process of compiling key data elements and implementing a software model that will meet the requirements of the new guidance. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) . This Update is being issued to increase the transparency and comparability around lease obligations. Previously unrecorded off-balance sheet obligations will now be recorded in the consolidated statements of financial condition, accompanied by enhanced qualitative and quantitative disclosures in the notes to the 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. The Company is currently in the process of evaluating existing lease obligations and service agreements under the provisions of the new standard. This evaluation includes an assessment of the appropriate classification and related accounting of each lease agreement under the new standard, a review of applicability of the new standard to existing service agreements and gathering all essential lease data that will facilitate the application of the new standard. Upon adoption of the new standard articulated in this Update, the Company will record a liability representing an obligation to make future lease payments and will also record an asset representing rights to use the underlying leased assets. As of June 30, 2018, the Company believes these assets and liabilities to be recognized under the new standard will amount to less than 1% of the Company's total assets.
Revenue Recognition	Revenue Recognition - The Company accounts for certain of its revenue streams in accordance with ASC 606 - Revenue from Contracts with Customers . Revenue streams within the scope of and accounted for under ASC 606 include: service charges and fees on deposit accounts, debit card interchange fees, fees from other services the Bank provides its customers and gains and losses from the sale of other real estate owned and property, premises and equipment. ASC 606 requires revenue to be recognized when the Company satisfies related performance obligations by transferring to the customer a good or service. The recognition of revenue under ASC 606 requires the Company to first identify the contract with the customer, identify the performance obligations, determine the transaction price, allocate the transaction price to the performance obligations and finally recognize revenue when the performance obligations have been satisfied and the good or service has been transferred. The majority of the Company’s contracts with customers associated with revenue streams that are within the scope of ASC 606 are considered short-term in nature and can be canceled at any time by the customer or the Bank, such as a deposit account agreement. Other more significant revenue streams for the Company such as interest income on loans and investment securities are specifically excluded from the scope of ASC 606 and are accounted for under other applicable U.S. GAAP.
Certain Acquired Loans	Certain Acquired Loans –As part of business acquisitions, the Bank acquires certain loans that have shown evidence of credit deterioration since origination. These acquired loans are recorded at the allocated fair value, such that there is no carryover of the seller’s allowance for loan losses. Such acquired loans are accounted for individually. The Bank estimates the amount and timing of expected cash flows for each purchased loan, and the expected cash flows in excess of the allocated fair value is recorded as interest income over the remaining life of the loan (accretable yield). The excess of the loan’s contractual principal and interest over expected cash flows is not recorded (non-accretable difference). Over the life of the loan, expected cash flows continue to be estimated. If the present value of expected cash flows is less than the carrying amount, a loss is recorded through the allowance for loan losses. If the present value of expected cash flows is greater than the carrying amount, it is recognized as part of future interest 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 an indefinite useful life 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 has selected the fourth quarter as the period to perform the annual impairment test. Intangible assets with definite useful lives are amortized over their estimated useful lives to their estimated residual values. Goodwill is the only intangible asset with an indefinite life on our balance sheet. 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 assets is consumed or otherwise used up, or on a straight-line amortization method over their estimated useful lives, which range from 6 to 10 years .
Use of Estimates	Use of Estimates –The preparation of 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. Actual results could differ from those estimates.
Fair Value Measurement	The fair value of an asset or liability is the exchange price that would be received to sell that asset or paid to transfer that liability (exit price) in an orderly transaction occurring in the principal market (or most advantageous market in the absence of a principal market) for such asset or liability. In estimating fair value, the Company utilizes valuation techniques that are consistent with the market approach, the income approach, and/or the cost approach. Such valuation techniques are consistently applied. Inputs to valuation techniques include the assumptions that market participants would use in pricing an asset or liability. ASC Topic 825 requires disclosure of the fair value of financial assets and financial liabilities, including both those financial assets and financial liabilities that are not measured and reported at fair value on a recurring basis and a non-recurring basis. The methodologies for estimating the fair value of financial assets and financial liabilities that are measured at fair value are discussed below. In accordance with accounting guidance, the Company groups its financial assets and financial liabilities measured at fair value in three levels, based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy are described as follows: Level 1 - Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities. Level 2 - Inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. These might include quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (such as interest rates, prepayment speeds, volatilities, etc.) or model-based valuation techniques where all significant assumptions are observable, either directly or indirectly, in the market. Level 3 - Valuation is generated from model-based techniques where one or more significant inputs are not observable, either directly or indirectly, in the market. These unobservable assumptions reflect the Company’s own estimates of assumptions that market participants would use in pricing the asset or liability. Valuation techniques may include use of matrix pricing, discounted cash flow models, and similar techniques. Because no market exists for a significant portion of the Company’s financial instruments, fair value estimates are based on judgments regarding current economic conditions, risk characteristics of various financial instruments, and other factors. These estimates are subjective in nature, and involve uncertainties and matters of significant judgment and therefore cannot be determined with precision. Changes in assumptions could significantly affect the fair values presented. Management uses its best judgment in estimating the fair value of the Company’s financial instruments; however, there are inherent limitations in any estimation technique. 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. 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 independent third-party pricing services, 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. Impaired Loans and Other Real Estate Owned – 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. 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. As such, the Company records impaired loans as Level 3. At June 30, 2018 , substantially all 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 and has concluded no reserves or write-downs are necessary. 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.

Acquisitions (Tables)

Acquisitions (Tables)	6 Months Ended
	Jun. 30, 2018
Business Combinations [Abstract]
Schedule of assets acquired and liabilities assumed and the provisional fair value adjustments and amounts recorded	The following table represents the assets acquired and liabilities assumed of HEOP as of April 1, 2017 and the fair value adjustments and amounts recorded by the Company in 2017 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 assets acquired and liabilities assumed of Plaza as of November 1, 2017 and the fair value adjustments and amounts recorded by the Company in 2017 under the acquisition method of accounting: Plaza Fair Value Adjustments Fair Value ASSETS ACQUIRED (dollars in thousands) 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 (194 ) 7,195 Core deposit intangible 198 10,575 10,773 Deferred tax assets 11,849 (6,343 ) 5,506 Other assets 19,495 (589 ) 18,906 Total assets acquired $ 1,245,740 $ 10,000 $ 1,255,740 LIABILITIES ASSUMED Deposits $ 1,081,727 $ 1,224 $ 1,082,951 Borrowings 40,755 397 41,152 Other liabilities 8,956 (451 ) 8,505 Total liabilities assumed 1,131,438 1,170 1,132,608 Excess of assets acquired over liabilities assumed $ 114,302 $ 8,830 123,132 Consideration paid 245,761 Goodwill recognized $ 122,629
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 Plaza 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 Plaza HEOP (dollars in thousands) Contractual amounts due $ 1,708,685 $ 1,717,191 Cash flows not expected to be collected 20,152 4,442 Expected cash flows 1,688,533 1,712,749 Interest component of expected cash flows 625,592 348,100 Fair value of acquired loans $ 1,062,941 $ 1,364,649
Summary of pro forma net interest and other income, net income and earnings per share	There were no material, nonrecurring adjustments to the pro forma net interest and other income, net income and earnings per share presented below: Three Months Ended Six Months Ended June 30, March 31, June 30, June 30, 2018 2018 2017 2018 2017 (dollars in thousands) Net interest and other income $ 87,969 $ 86,694 $ 85,210 $ 174,663 $ 163,050 Net income 27,303 28,002 17,710 55,305 31,481 Basic earnings per share 0.59 0.61 0.39 1.20 0.69 Diluted earnings per share 0.58 0.60 0.38 1.18 0.68

Investment Securities (Tables)

Investment Securities (Tables)	6 Months Ended
	Jun. 30, 2018
Investments, Debt and Equity Securities [Abstract]
Schedule of amortized cost and estimated fair value of securities	The amortized cost and estimated fair value of securities were as follows: June 30, 2018 Amortized Cost Unrealized Gain Unrealized Loss Estimated Fair Value (dollars in thousands) Investment securities available-for-sale: Agency $ 41,567 $ — $ (490 ) $ 41,077 Corporate 93,126 433 (1,057 ) 92,502 Municipal bonds 221,806 1,281 (3,186 ) 219,901 Collateralized mortgage obligation: residential 29,747 81 (670 ) 29,158 Mortgage-backed securities: residential 505,817 58 (13,813 ) 492,062 Total investment securities available-for-sale 892,063 1,853 (19,216 ) 874,700 Investment securities held-to-maturity: Mortgage-backed securities: residential 30,854 — (838 ) 30,016 Other 1,111 — — 1,111 Total investment securities held-to-maturity 31,965 — (838 ) 31,127 Total investment securities $ 924,028 $ 1,853 $ (20,054 ) $ 905,827 December 31, 2017 Amortized Cost Unrealized Gain Unrealized Loss Estimated Fair Value (dollars in thousands) Investment securities available-for-sale: Agency $ 47,051 $ 236 $ (78 ) $ 47,209 Corporate 78,155 1,585 (194 ) 79,546 Municipal bonds 228,929 3,942 (743 ) 232,128 Collateralized mortgage obligation: residential 33,984 132 (335 ) 33,781 Mortgage-backed securities: residential 398,664 266 (4,165 ) 394,765 Total investment securities available-for-sale 786,783 6,161 (5,515 ) 787,429 Investment securities held-to-maturity: Mortgage-backed securities: residential 17,153 — (209 ) 16,944 Other 1,138 — — 1,138 Total investment securities held-to-maturity 18,291 — (209 ) 18,082 Total investment securities $ 805,074 $ 6,161 $ (5,724 ) $ 805,511
Schedule of number, fair value and gross unrealized holding losses of the Company's investment securities by investment category and length of time that the securities have been in a continuous loss position	The table below shows the number, fair value and gross unrealized holding losses of the Company’s investment securities by investment category and length of time that the securities have been in a continuous loss position. June 30, 2018 Less than 12 Months 12 Months or Longer Total Number Fair Value Gross Unrealized Holding Losses Number Fair Value Gross Unrealized Holding Losses Number Fair Value Gross Unrealized Holding Losses (dollars in thousands) Investment securities available-for-sale: Agency 19 $ 39,828 $ (471 ) 1 $ 1,249 $ (19 ) 20 $ 41,077 $ (490 ) Corporate 16 48,326 (880 ) 2 6,014 (177 ) 18 54,340 (1,057 ) Municipal bonds 163 116,648 (2,070 ) 32 16,019 (1,116 ) 195 132,667 (3,186 ) Collateralized mortgage obligation: residential 7 14,762 (400 ) 3 7,658 (270 ) 10 22,420 (670 ) Mortgage-backed securities: residential 100 348,704 (8,550 ) 49 113,184 (5,263 ) 149 461,888 (13,813 ) Total investment securities available-for-sale 305 568,268 (12,371 ) 87 144,124 (6,845 ) 392 712,392 (19,216 ) Investment securities held-to-maturity: Mortgage-backed securities: residential 2 1,111 — — — — 2 1,111 — Other 6 24,063 (585 ) 1 5,953 (253 ) 7 30,016 (838 ) Total investment securities held-to-maturity 8 25,174 (585 ) 1 5,953 (253 ) 9 31,127 (838 ) Total investment securities 313 $ 593,442 $ (12,956 ) 88 $ 150,077 $ (7,098 ) 401 $ 743,519 $ (20,054 ) December 31, 2017 Less than 12 Months 12 Months or Longer Total Number Fair Gross Number Fair Gross Number Fair Gross (dollars in thousands) Investment securities available-for-sale: Agency 6 $ 13,754 $ (78 ) — $ — $ — 6 $ 13,754 $ (78 ) Corporate 4 10,079 (64 ) 2 6,076 (130 ) 6 16,155 (194 ) Municipal bonds 103 61,313 (268 ) 30 15,658 (475 ) 133 76,971 (743 ) Collateralized mortgage obligation: residential 5 13,971 (149 ) 3 8,943 (186 ) 8 22,914 (335 ) Mortgage-backed securities: residential 66 220,951 (1,600 ) 41 110,062 (2,565 ) 107 331,013 (4,165 ) Total investment securities available-for-sale 184 320,068 (2,159 ) 76 140,739 (3,356 ) 260 460,807 (5,515 ) Investment securities held-to-maturity: Mortgage-backed securities: residential 2 10,745 (133 ) 1 6,198 (76 ) 3 16,943 (209 ) Total investment securities held-to-maturity 2 10,745 (133 ) 1 6,198 (76 ) 3 16,943 (209 ) Total investment securities 186 $ 330,813 $ (2,292 ) 77 $ 146,937 $ (3,432 ) 263 $ 477,750 $ (5,724 )
Schedule of amortized cost and estimated fair value of investment securities available for sale by contractual maturity	The amortized cost and estimated fair value of investment securities at June 30, 2018 , by contractual maturity are shown in the table below. One Year or Less More than One Year to Five Years More than Five Years to Ten Years More than Ten Years 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: Agency $ — $ — $ — $ — $ 18,560 $ 18,371 $ 23,007 $ 22,706 $ 41,567 $ 41,077 Corporate — — — — 93,126 92,502 — — 93,126 92,502 Municipal bonds 3,806 3,807 36,076 36,038 68,094 66,741 113,830 113,315 221,806 219,901 Collateralized mortgage obligation: residential — — — — 934 936 28,813 28,222 29,747 29,158 Mortgage-backed securities: residential — — 2,066 2,002 119,439 117,063 384,312 372,997 505,817 492,062 Total investment securities available-for-sale 3,806 3,807 38,142 38,040 300,153 295,613 549,962 537,240 892,063 874,700 Investment securities held-to-maturity: Mortgage-backed securities: residential — — — — — — 30,854 30,016 30,854 30,016 Other — — — — — — 1,111 1,111 1,111 1,111 Total investment securities held-to-maturity — — — — — — 31,965 31,127 31,965 31,127 Total investment securities $ 3,806 $ 3,807 $ 38,142 $ 38,040 $ 300,153 $ 295,613 $ 581,927 $ 568,367 $ 924,028 $ 905,827

Loans Held for Investment (Tabl

Loans Held for Investment (Tables)	6 Months Ended
	Jun. 30, 2018
Receivables [Abstract]
Schedule of components of loans held for investment	The following table sets forth the composition of our loan portfolio in dollar amounts at the dates indicated: June 30, 2018 December 31, 2017 (dollars in thousands) Business loans Commercial and industrial $ 1,102,586 $ 1,086,659 Franchise 708,957 660,414 Commercial owner occupied (1) 1,310,722 1,289,213 SBA 176,696 185,514 Agribusiness 136,962 116,066 Total business loans 3,435,923 3,337,866 Real estate loans Commercial non-owner occupied 1,219,747 1,243,115 Multi-family 805,494 794,384 One-to-four family (2) 249,495 270,894 Construction 321,423 282,811 Farmland 136,548 145,393 Land 30,246 31,233 Total real estate loans 2,762,953 2,767,830 Consumer loans Consumer loans 81,973 92,931 Gross loans held for investment (3) 6,280,849 6,198,627 Deferred loan origination costs/(fees) and premiums/(discounts), net (3,263 ) (2,403 ) Loans held for investment 6,277,586 6,196,224 Allowance for loan losses (31,747 ) (28,936 ) Loans held for investment, net $ 6,245,839 $ 6,167,288 Loans held for sale, at lower of cost or fair value $ 13,879 $ 23,426 ______________________________ (1) Secured by real estate. (2) Includes second trust deeds. (3) Total gross loans held for investment for June 30, 2018 and December 31, 2017 are net of the unaccreted fair value net purchase discounts of $22.2 million and $29.1 million , respectively.
Summary of loan portfolio by the Company's internal risk grading system	he following tables stratify the loan portfolio by the Company’s internal risk grading as of the periods indicated: Credit Risk Grades Pass Special Mention Substandard Doubtful Total Gross Loans June 30, 2018 (dollars in thousands) Business loans Commercial and industrial $ 1,080,580 $ 9,952 $ 12,054 $ — $ 1,102,586 Franchise 708,748 — 209 — 708,957 Commercial owner occupied 1,296,927 641 13,154 — 1,310,722 SBA 181,347 1,096 3,189 — 185,632 Agribusiness 128,709 — 8,253 — 136,962 Real estate loans Commercial non-owner occupied 1,222,448 — 2,242 — 1,224,690 Multi-family 803,977 703 814 — 805,494 One-to-four family 247,452 136 1,907 — 249,495 Construction 321,423 — — — 321,423 Farmland 136,422 — 126 — 136,548 Land 30,036 — 210 — 30,246 Consumer loans Consumer loans 81,837 — 136 — 81,973 Totals $ 6,239,906 $ 12,528 $ 42,294 $ — $ 6,294,728 Credit Risk Grades Pass Special Substandard Doubtful Total Gross December 31, 2017 (dollars in thousands) Business loans Commercial and industrial $ 1,063,452 $ 8,163 $ 15,044 $ — $ 1,086,659 Franchise 660,414 — — — 660,414 Commercial owner occupied 1,273,381 654 21,180 — 1,295,215 SBA 199,468 1 3,469 — 202,938 Agribusiness 108,143 4,079 3,844 — 116,066 Real estate loans Commercial non-owner occupied 1,242,045 — 1,070 — 1,243,115 Multi-family 794,156 — 228 — 794,384 One-to-four family 268,776 154 1,964 — 270,894 Construction 282,294 517 — — 282,811 Farmland 144,234 44 1,115 — 145,393 Land 30,979 — 254 — 31,233 Consumer loans Consumer loans 92,794 — 137 — 92,931 Totals $ 6,160,136 $ 13,612 $ 48,305 $ — $ 6,222,053
Schedule of delinquencies in the Company's loan portfolio	The following tables set forth delinquencies in the Company’s loan portfolio at the dates indicated: Days Past Due Current 30-59 60-89 90+ Total Gross Loans Non-accruing June 30, 2018 (dollars in thousands) Business loans Commercial and industrial $ 1,100,623 $ 1,863 $ — $ 100 $ 1,102,586 $ 1,062 Franchise 708,748 — — 209 708,957 209 Commercial owner occupied 1,310,722 — — — 1,310,722 — SBA 183,835 488 — 1,309 185,632 1,423 Agribusiness 136,962 — — — 136,962 — Real estate loans Commercial non-owner occupied 1,222,694 706 1,290 — 1,224,690 1,290 Multi-family 804,905 — — 589 805,494 589 One-to-four family 248,608 526 — 361 249,495 1,445 Construction 321,423 — — — 321,423 — Farmland 136,548 — — — 136,548 — Land 30,240 — — 6 30,246 6 Consumer loans Consumer loans 81,973 — — — 81,973 15 Totals $ 6,287,281 $ 3,583 $ 1,290 $ 2,574 $ 6,294,728 $ 6,039 Days Past Due Current 30-59 60-89 90+ Total Gross Loans Non-accruing December 31, 2017 (dollars in thousands) Business loans Commercial and industrial $ 1,085,770 $ 84 $ 570 $ 235 $ 1,086,659 $ 1,160 Franchise 660,414 — — — 660,414 — Commercial owner occupied 1,291,255 3,474 486 — 1,295,215 97 SBA 200,821 177 — 1,940 202,938 1,201 Agribusiness 116,066 — — — 116,066 — Real estate loans Commercial non-owner occupied 1,243,115 — — — 1,243,115 — Multi-family 792,603 1,781 — — 794,384 — One-to-four family 269,725 354 — 815 270,894 817 Construction 282,811 — — — 282,811 — Farmland 145,393 — — — 145,393 — Land 31,141 83 — 9 31,233 9 Consumer loans Consumer loans 92,880 11 — 40 92,931 — Totals $ 6,211,994 $ 5,964 $ 1,056 $ 3,039 $ 6,222,053 $ 3,284
Summary of Company's investment in impaired loans	The following tables provide a summary of the Company’s investment in impaired loans as of the period indicated: Impaired Loans Unpaid Principal Balance Recorded Investment With Specific Allowance Without Specific Allowance Specific Allowance for Impaired Loans (dollars in thousands) June 30, 2018 Business loans Commercial and industrial $ 1,523 $ 1,062 $ — $ 1,062 $ — Franchise 205 209 — 209 — SBA 4,926 1,423 — 1,423 — Real estate loans Commercial non-owner occupied 1,287 1,290 — 1,290 — Multi-family 589 589 — 589 — One-to-four family 1,502 1,445 — 1,445 — Land 34 6 — 6 — Consumer loans Consumer loans 16 15 — 15 — Totals $ 10,082 $ 6,039 $ — $ 6,039 $ — Impaired Loans Unpaid Principal Balance Recorded Investment With Specific Allowance Without Specific Allowance Specific Allowance for Impaired Loans (dollars in thousands) December 31, 2017 Business loans Commercial and industrial $ 1,585 $ 1,160 $ — $ 1,160 $ — Commercial owner occupied 98 97 97 — 55 SBA 4,329 1,201 — 1,201 — Real estate loans One-to-four family 849 817 — 817 — Land 35 9 — 9 — Totals $ 6,896 $ 3,284 $ 97 $ 3,187 $ 55 Impaired Loans Three Months Ended June 30, 2018 March 31, 2018 June 30, 2017 Average Recorded Investment Interest Income Recognized (1) Average Recorded Investment Interest Income Recognized (1) Average Recorded Investment Interest Income Recognized (1) (dollars in thousands) Business loans Commercial and industrial $ 1,272 $ — $ 1,181 $ — $ 7 $ — Franchise 70 — — — — — Commercial owner occupied 2,317 — 3,475 — 125 2 SBA 1,360 — 1,241 — 222 4 Real estate loans Commercial non-owner occupied 430 — — — — — Multi-family 589 — 821 — — — One-to-four family 1,343 — 1,024 — 105 3 Construction — — — — — — Land 6 — 8 — 12 1 Consumer loans Consumer loans 15 $ — 94 — — — Totals $ 7,402 $ — $ 7,844 $ — $ 471 $ 10 (1) Cash basis and accrual basis is materially the same. Impaired Loans Six Months Ended June 30, 2018 2017 Average Recorded Investment Interest Income Recognized (1) Average Recorded Investment Interest Income Recognized (1) (dollars in thousands) Business loans: Commercial and industrial $ 1,226 $ — $ 200 $ 5 Franchise 35 — — — Commercial owner occupied 2,896 — 192 5 SBA 1,300 — 307 9 Real estate loans: Commercial non-owner occupied 215 — — — Multi-family 705 — — — One-to-four family 1,184 — 116 6 Land 7 — 14 2 Consumer loans: Consumer loans 55 — — — Totals $ 7,623 $ — $ 829 $ 27 (1) Cash basis and accrual basis is materially the same.
Summary of additional detail on components of impaired loans	The following table provides additional detail on the components of impaired loans at the period end indicated: June 30, 2018 December 31, 2017 (dollars in thousands) Nonaccruing loans $ 6,039 $ 3,284 Accruing loans — — Total impaired loans $ 6,039 $ 3,284
Summary of Company's investment in purchased credit impaired loans	The Company has purchased loans, for which there was, at acquisition, evidence of deterioration of credit quality since origination and for which it was probable, at acquisition, that all contractually required payments would not be collected. The carrying amount of those loans is as follows: June 30, 2018 December 31, 2017 (dollars in thousands) Business loans Commercial and industrial $ 3,026 $ 3,310 Commercial owner occupied 769 1,262 SBA 11 1,802 Real estate loans Commercial non-owner occupied 1,247 1,650 One-to-four family — 255 Construction — 517 Land 79 83 Consumer loans 8 10 Total purchase credit impaired $ 5,140 $ 8,889
Summary of accretable yield on purchased credit impaired	The following table summarizes the accretable yield on the purchased credit impaired loans for the three and six month periods indicated. Three Months Ended Six Months Ended June 30, March 31, June 30, June 30, 2018 2018 2017 2018 2017 (dollars in thousands) Balance at the beginning of period $ 1,709 $ 3,019 $ 3,601 $ 3,019 $ 3,747 Additions — — 2,036 — 2,036 Accretion (270 ) (236 ) (712 ) (506 ) (1,341 ) Payoffs 32 (1,850 ) — (1,818 ) — Reclassification from (to) nonaccretable difference 2 776 (1,428 ) 778 (945 ) Balance at the end of period $ 1,473 $ 1,709 $ 3,497 $ 1,473 $ 3,497

Allowance for Loan Losses (Tabl

Allowance for Loan Losses (Tables)	6 Months Ended
	Jun. 30, 2018
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 three and six months ended for the periods indicated: Three Months Ended June 30, 2018 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, March 31, 2018 $ 9,492 $ 6,095 $ 791 $ 2,814 $ 2,105 $ 1,337 $ 592 $ 745 $ 5,075 $ 234 $ 1,172 $ 50 $ 30,502 Charge-offs (246 ) — — (27 ) — — — — — — — — (273 ) Recoveries 138 — 16 9 — — — 1 — — — 1 165 Provisions for (reduction in) loan losses 780 86 330 (221 ) 589 113 (29 ) (48 ) (266 ) 171 (200 ) 48 1,353 Balance, June 30, 2018 $ 10,164 $ 6,181 $ 1,137 $ 2,575 $ 2,694 $ 1,450 $ 563 $ 698 $ 4,809 $ 405 $ 972 $ 99 $ 31,747 Six Months Ended June 30, 2018 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 (911 ) — — (56 ) — — — — — — — (52 ) (1,019 ) Recoveries 163 — 24 35 — — — 1 — — — 1 224 Provisions for (reduction in) loan losses 1,191 384 346 (294 ) 1,403 184 (44 ) (106 ) 240 268 (21 ) 55 3,606 Balance, June 30, 2018 $ 10,164 $ 6,181 $ 1,137 $ 2,575 $ 2,694 $ 1,450 $ 563 $ 698 $ 4,809 $ 405 $ 972 $ 99 $ 31,747 Amount of allowance attributed to: Specifically evaluated impaired loans $ — $ — $ — $ — $ — $ — $ — $ — $ — $ — $ — $ — $ — General portfolio allocation 10,164 6,181 1,137 2,575 2,694 1,450 563 698 4,809 405 972 99 31,747 Loans individually evaluated for impairment 1,062 209 — 1,423 — 1,290 589 1,445 — — 6 15 6,039 Specific reserves to total loans individually evaluated for impairment — % — % — % — % — % — % — % — % — % — % — % — % — % Loans collectively evaluated for impairment $ 1,101,524 $ 708,748 $ 1,310,722 $ 175,273 $ 136,962 $ 1,218,457 $ 804,905 $ 248,050 $ 321,423 $ 136,548 $ 30,240 $ 81,958 $ 6,274,810 General reserves to total loans collectively evaluated for impairment 0.92 % 0.87 % 0.09 % 1.47 % 1.97 % 0.12 % 0.07 % 0.28 % 1.50 % 0.30 % 3.21 % 0.12 % 0.51 % Total gross loans held for investment $ 1,102,586 $ 708,957 $ 1,310,722 $ 176,696 $ 136,962 $ 1,219,747 $ 805,494 $ 249,495 $ 321,423 $ 136,548 $ 30,246 $ 81,973 $ 6,280,849 Total allowance to gross loans held for investment 0.92 % 0.87 % 0.09 % 1.46 % 1.97 % 0.12 % 0.07 % 0.28 % 1.50 % 0.30 % 3.21 % 0.12 % 0.51 % Three Months Ended June 30, 2017 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, March 31, 2017 $ 6,949 $ 4,474 $ 1,232 $ 1,145 $ — $ 1,847 $ 2,803 $ 373 $ 4,027 — $ 204 $ 21 $ 23,075 Charge-offs (110 ) — — — — — — — — — — — (110 ) Recoveries 33 — 70 81 — — — 1 — — — 1 186 Provisions for (reduction in) loan losses 772 893 (630 ) 1,293 206 (643 ) (2,192 ) 350 1,009 28 755 63 1,904 Balance, June 30, 2017 $ 7,644 $ 5,367 $ 672 $ 2,519 $ 206 $ 1,204 $ 611 $ 724 $ 5,036 $ 28 $ 959 $ 85 $ 25,055 Six Months Ended June 30, 2017 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, 2016 $ 6,362 $ 3,845 $ 1,193 $ 1,039 $ — $ 1,715 $ 2,927 $ 365 $ 3,632 — $ 198 $ 20 $ 21,296 Charge-offs (862 ) — — (8 ) — — — — — — — — (870 ) Recoveries 55 — 82 83 — — — 2 — — — 1 223 Provisions for (reduction in) loan losses 2,089 1,522 (603 ) 1,405 206 (511 ) (2,316 ) 357 1,404 28 761 64 4,406 Balance, June 30, 2017 $ 7,644 $ 5,367 $ 672 $ 2,519 $ 206 $ 1,204 $ 611 $ 724 $ 5,036 $ 28 $ 959 $ 85 $ 25,055 Amount of allowance attributed to: Specifically evaluated impaired loans $ — $ — $ — $ — $ — $ — $ — $ — $ — — $ — $ — $ — General portfolio allocation 7,644 5,367 672 2,519 206 1,204 611 724 5,036 28 959 85 25,055 Loans individually evaluated for impairment — — 206 73 — — — 104 — — 12 — 395 Specific reserves to total loans individually evaluated for impairment — % — % — % — % — % — % — % — % — % — — % — % — % Loans collectively evaluated for impairment $ 733,852 $ 565,415 $ 729,270 $ 101,311 $ 98,842 $ 1,095,184 $ 746,547 $ 321,944 $ 289,600 136,587 $ 31,787 $ 7,309 $ 4,857,648 General reserves to total loans collectively evaluated for impairment 1.04 % 0.95 % 0.09 % 2.49 % 0.21 % 0.11 % 0.08 % 0.22 % 1.74 % 0.02 % 3.02 % 1.16 % 0.52 % Total gross loans held for investment $ 733,852 $ 565,415 $ 729,476 $ 101,384 $ 98,842 $ 1,095,184 $ 746,547 $ 322,048 $ 289,600 136,587 $ 31,799 $ 7,309 $ 4,858,043 Total allowance to gross loans held for investment 1.04 % 0.95 % 0.09 % 2.48 % 0.21 % 0.11 % 0.08 % 0.22 % 1.74 % 0.02 % 3.02 % 1.16 % 0.52 %

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
	Jun. 30, 2018
Earnings Per Share [Abstract]
Schedule of number of stock options excluded from the computations of diluted earnings per share	The following table sets forth the weighted average number of stock options excluded for the periods indicated: Three Months Ended Six Months Ended June 30, March 31, June 30, June 30, 2018 2018 2017 2018 2017 Weighted average stock options excluded — — 15,531 — 7,389
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: Three Months Ended June 30, 2018 March 31, 2018 June 30, 2017 Net Shares Per Share Net Shares Per Share Net Shares Per Share (dollars in thousands, except per share data) Net income $ 27,303 $ 28,002 $ 14,176 Basic income available to common stockholders 27,303 46,053,077 $ 0.59 28,002 45,893,496 $ 0.61 14,176 39,586,524 $ 0.36 Dilutive effect of share-based compensation — 649,891 — 758,563 — 680,696 Diluted income available to common stockholders plus assumed conversions $ 27,303 46,702,968 $ 0.58 $ 28,002 46,652,059 $ 0.60 $ 14,176 40,267,220 $ 0.35 Six Months Ended 2018 2017 Net Shares Per Share Net Shares Per Share (dollars in thousands, except per share data) Net income $ 55,305 $ 23,697 Basic income available to common stockholders 55,305 45,973,727 $ 1.20 23,697 33,591,040 $ 0.71 Effect of dilutive stock options and warrants 704,396 676,175 Diluted income available to common stockholders plus assumed conversions $ 55,305 46,678,123 $ 1.18 $ 23,697 34,267,215 $ 0.69

Fair Value of Financial Instr29

Fair Value of Financial Instruments (Tables)	6 Months Ended
	Jun. 30, 2018
Fair Value Disclosures [Abstract]
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 periods indicated, representing an exit price. At June 30, 2018 Carrying Amount Level 1 Level 2 Level 3 Estimated Fair Value (dollars in thousands) Assets: Cash and cash equivalents $ 131,468 $ 131,468 $ — $ — $ 131,468 Interest-bearing time deposits with financial institutions 6,633 6,633 — — 6,633 Investments held-to-maturity 31,965 — 31,126 — 31,126 Investment securities available-for-sale 874,700 — 874,700 — 874,700 FHLB, FRB and other stock 82,666 N/A N/A N/A N/A Loans held for sale 13,879 — 14,940 — 14,940 Loans held for investment, net 6,277,586 — — 6,279,915 6,279,915 Derivative asset 3,272 — 3,272 — 3,272 Accrued interest receivable 27,420 27,420 — — 27,420 Liabilities: Deposit accounts 6,308,350 5,139,299 1,160,215 — 6,299,514 FHLB advances 337,638 — 336,504 — 336,504 Other borrowings 41,462 — 41,514 — 41,514 Subordinated debentures 105,253 — 116,004 — 116,004 Derivative liability 3,272 — 3,272 — 3,272 Accrued interest payable 1,151 1,151 — — 1,151 At December 31, 2017 Carrying Amount Level 1 Level 2 Level 3 Estimated Fair Value (dollars in thousands) Assets: Cash and cash equivalents $ 197,164 $ 197,164 $ — $ — $ 197,164 Interest-bearing time deposits with financial institutions 6,633 6,633 — — 6,633 Investments held-to-maturity 18,291 — 18,082 — 18,082 Investment securities available-for-sale 787,429 — 787,429 — 787,429 FHLB, FRB and other stock 65,881 N/A N/A N/A N/A Loans held for sale 23,426 — 23,524 — 23,524 Loans held for investment, net (1) 6,167,288 — — 6,269,366 6,269,366 Derivative asset 1,135 — 1,135 — $ 1,135 Accrued interest receivable 27,060 27,060 — — 27,060 Liabilities: Deposit accounts 6,085,886 5,001,053 1,074,564 — 6,075,617 FHLB advances 490,148 — 489,823 — 489,823 Other borrowings 46,139 — 46,373 — 46,373 Subordinated debentures 105,123 — 115,159 — 115,159 Derivative liability 1,135 — 1,135 — 1,135 Accrued interest payable 2,131 2,131 — — 2,131 (1) The estimated fair value of loans held for investment, net for December 31, 2017 is not based on an exit price assumption.
Schedule of Company's financial instruments measured at fair value on a recurring basis	The following fair value hierarchy table presents information about the Company’s financial instruments measured at fair value on a recurring basis at the dates indicated: June 30, 2018 Fair Value Measurement Using Level 1 Level 2 Level 3 Total Fair Value (dollars in thousands) Financial assets Investment securities available-for-sale: Agency $ — $ 41,077 $ — $ 41,077 Corporate — 92,502 — 92,502 Municipal bonds — 219,901 — 219,901 Collateralized mortgage obligation — 29,158 — 29,158 Mortgage-backed securities — 492,062 — 492,062 Total securities available-for-sale $ — $ 874,700 $ — $ 874,700 Derivative assets $ — $ 3,272 $ — $ 3,272 Financial liabilities Derivative liabilities $ — $ 3,272 $ — $ 3,272 December 31, 2017 Fair Value Measurement Using Level 1 Level 2 Level 3 Total Fair Value (dollars in thousands) Financial assets Investment securities available-for-sale: Agency $ — $ 47,209 $ — $ 47,209 Corporate — 79,546 — 79,546 Municipal bonds — 232,128 — 232,128 Collateralized mortgage obligation — 33,781 — 33,781 Mortgage-backed securities — 394,765 — 394,765 Total securities available-for-sale $ — $ 787,429 $ — $ 787,429 Derivative assets $ — $ 1,135 $ — $ 1,135 Financial liabilities Derivative liabilities $ — $ 1,135 $ — $ 1,135

Derivative Instruments (Tables)

Derivative Instruments (Tables)	6 Months Ended
	Jun. 30, 2018
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: June 30, 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 $ 57,710 $ 3,272 $ 57,710 $ 3,272 Total derivative instruments $ 57,710 $ 3,272 $ 57,710 $ 3,272 December 31, 2017 Derivative Assets Derivative Liabilities Notional Fair Value Notional Fair Value (dollars in thousands) Derivative instruments not designated as hedging instruments: Interest rate swap contracts $ 58,599 $ 1,135 $ 58,599 $ 1,135 Total derivative instruments $ 58,599 $ 1,135 $ 58,599 $ 1,135

Balance Sheet Offsetting (Table

Balance Sheet Offsetting (Tables)	6 Months Ended
	Jun. 30, 2018
Offsetting [Abstract]
Offsetting Assets and Liabilities	Financial instruments that are eligible for offset in the consolidated statements of financial condition as of June 30, 2018 are presented in the table below: 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) June 30, 2018 Financial assets: Derivatives not designated as $ 3,272 $ — $ 3,272 $ — $ — $ 3,272 Total $ 3,272 $ — $ 3,272 $ — $ — $ 3,272 Financial liabilities: Derivatives not designated as $ 3,272 $ — $ 3,272 $ — $ — $ 3,272 Total $ 3,272 $ — $ 3,272 $ — $ — $ 3,272 (1) Represents cash collateral held with counterparty bank. Financial instruments that are eligible for offset in the consolidated statements of financial condition as of December 31, 2017 are presented in the table below: 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) December 31, 2017 Financial assets: Derivatives not designated as $ 1,833 $ (698 ) $ 1,135 $ — $ — $ 1,135 Total $ 1,833 $ (698 ) $ 1,135 $ — $ — $ 1,135 Financial liabilities: Derivatives not designated as $ 1,135 $ — $ 1,135 $ — $ — $ 1,135 Total $ 1,135 $ — $ 1,135 $ — $ — $ 1,135 (1) Represents cash collateral held with counterparty bank.

Revenue Recognition (Tables)

Revenue Recognition (Tables)	6 Months Ended
	Jun. 30, 2018
Revenue from Contract with Customer [Abstract]
Summary of Company's Revenue Streams	The following tables provide a summary of the Company’s revenue streams, including those that are within the scope of ASC 606 and those that are accounted for under other applicable U.S. GAAP: Three Months Ended June 30, 2018 March 31, 2018 June 30, 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) Interest income: Loans $ — $ 85,625 $ — $ 84,173 $ — $ 63,554 Investment securities and other interest-earning assets — 7,074 — 6,654 — 5,179 Total interest income — 92,699 — 90,827 — 68,733 Noninterest income: Loan servicing fees — 292 — 345 — 143 Service charges on deposit accounts 1,057 — 1,150 — 866 — Other service fee income 169 — 146 — 495 — Debit card interchange income 1,090 — 1,036 — 679 — Earnings on bank-owned life insurance — 617 — 611 — 689 Net gain from sales of loans — 3,843 — 2,958 — 2,887 Net gain from sales of investment securities — 330 — 6 — 2,093 Other income 297 456 237 1,177 90 817 Total noninterest income 2,613 5,538 2,569 5,097 2,130 6,629 Total revenues $ 2,613 $ 98,237 $ 2,569 $ 95,924 $ 2,130 $ 75,362 ______________________________ (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. Six Months Ended June 30, 2018 June 30, 2017 Within Scope (1) Out of Scope (2) Within Scope (1) Out of Scope (2) (dollars in thousands) Interest income: Loans $ — $ 169,798 $ — $ 105,990 Investment securities and other interest-earning assets — 13,728 — 8,170 Total interest income — 183,526 — 114,160 Noninterest income: Loan servicing fees — 637 — 365 Service charges on deposit accounts 2,207 — 1,207 — Other service fee income 315 — 874 — Debit card interchange income 2,126 — 746 — Earnings on bank-owned life insurance — 1,228 — 1,025 Net gain from sales of loans — 6,801 — 5,698 Net gain from sales of investment securities — 336 — 2,093 Other income 530 1,637 139 1,295 Total noninterest income 5,178 10,639 2,966 10,476 Total revenues $ 5,178 $ 194,165 $ 2,966 $ 124,636 ______________________________ (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.

Recently Issued Accounting Pr33

Recently Issued Accounting Pronouncements (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Mar. 31, 2018	Jun. 30, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification of certain tax effects of the Tax Cuts and Jobs Act		$ 0
Accumulated Other Comprehensive Income (Loss)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification of certain tax effects of the Tax Cuts and Jobs Act		82
Accumulated Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification of certain tax effects of the Tax Cuts and Jobs Act		(82)
Accounting Standards Update 2018-02 | Accumulated Other Comprehensive Income (Loss)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification of certain tax effects of the Tax Cuts and Jobs Act	$ 82
Accounting Standards Update 2018-02 | Accumulated Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification of certain tax effects of the Tax Cuts and Jobs Act		$ (82)
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Expected assets and liabilities recognized under new lease standard, as a percentage of total assets		1.00%

Significant Accounting Polici34

Significant Accounting Policies (Details) - Core Deposits	6 Months Ended
	Jun. 30, 2018
Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Weighted average useful life (in years)	6 years
Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Weighted average useful life (in years)	10 years

Acquisitions - Narrative (Detai

Acquisitions - Narrative (Details) $ / shares in Units, $ in Thousands	Nov. 01, 2017USD ($)$ / sharesshares	Apr. 01, 2017USD ($)shares	Sep. 30, 2017USD ($)	Jun. 30, 2018USD ($)	Jun. 30, 2018USD ($)	Jun. 30, 2018USD ($)	Dec. 31, 2017USD ($)	Mar. 31, 2017$ / shares
Business Acquisition [Line Items]
Goodwill				$ 494,672	$ 494,672	$ 494,672	$ 493,329
Adjustment to deferred tax assets and the deal consideration			$ 1,100
Plaza Bancorp
Business Acquisition [Line Items]
Total assets acquired	$ 1,245,740			1,255,740	1,255,740	1,255,740
Gross loans acquired	1,100,000
Total deposits acquired	$ 1,081,727			1,082,951	1,082,951	1,082,951
Equity issued, ratio	0.2000
Consideration paid	$ 246,000				245,761
Aggregate cash consideration payable	$ 6,500
Company's common stock value (usd per share) | $ / shares	$ 40.40
Goodwill	$ 123,000			122,629	122,629	122,629
Adjustments to core deposit intangibles, deferred tax assets, loans and other assets and liabilities				1,300
Plaza Bancorp | Common Stock
Business Acquisition [Line Items]
Common stock issued as consideration (in shares) | shares	6,049,373
Heritage Oaks Bancorp
Business Acquisition [Line Items]
Total assets acquired		$ 2,003,635		2,014,822	2,014,822	2,014,822
Gross loans acquired		1,400,000
Total deposits acquired		$ 1,668,085		1,669,550	1,669,550	1,669,550
Equity issued, ratio		0.3471
Consideration paid		$ 467,000				467,439
Aggregate cash consideration payable		3,900
Company's common stock value (usd per share) | $ / shares								$ 38.55
Goodwill		$ 270,000		$ 269,553	$ 269,553	$ 269,553
Heritage Oaks Bancorp | Common Stock
Business Acquisition [Line Items]
Common stock issued as consideration (in shares) | shares		11,959,022

Acquisitions - Assets Acquired

Acquisitions - Assets Acquired and Liabilities Assumed - Schedule (Details) - USD ($) $ in Thousands	Nov. 01, 2017	Apr. 01, 2017	Jun. 30, 2018	Jun. 30, 2018	Dec. 31, 2017
LIABILITIES ASSUMED
Goodwill recognized			$ 494,672	$ 494,672	$ 493,329
Plaza Bancorp
ASSETS ACQUIRED
Cash and cash equivalents	$ 150,459		150,459	150,459
Loans, gross	1,069,359		1,062,901	1,062,901
Allowance for loan losses	(13,009)		0	0
Fixed assets	7,389		7,195	7,195
Core deposit intangible	198		10,773	10,773
Deferred tax assets	11,849		5,506	5,506
Other assets	19,495		18,906	18,906
Total assets acquired	1,245,740		1,255,740	1,255,740
LIABILITIES ASSUMED
Deposits	1,081,727		1,082,951	1,082,951
Borrowings	40,755		41,152	41,152
Other Liabilities	8,956		8,505	8,505
Total liabilities assumed	1,131,438		1,132,608	1,132,608
Excess of assets acquired over liabilities assumed	114,302		123,132	123,132
Consideration paid	246,000		245,761
Goodwill recognized	$ 123,000		122,629	122,629
Fair Value Adjustments
Cash and cash equivalents			0
Loans, gross			(6,458)
Allowance for loan losses			13,009
Fixed assets			(194)
Core deposit intangible			10,575
Deferred tax assets			(6,343)
Other assets			(589)
Total assets acquired			10,000
Deposits			1,224
Borrowings			397
Other Liabilities			(451)
Total liabilities assumed			1,170
Excess of assets acquired over liabilities assumed			8,830
Heritage Oaks Bancorp
ASSETS ACQUIRED
Cash and cash equivalents		$ 78,728	78,728	78,728
Investment securities		445,299	442,923	442,923
Loans, gross		1,384,949	1,364,688	1,364,688
Allowance for loan losses		(17,200)	0	0
Fixed assets		35,567	34,902	34,902
Core deposit intangible		3,207	28,123	28,123
Deferred tax assets		17,850	10,244	10,244
Other assets		55,235	55,214	55,214
Total assets acquired		2,003,635	2,014,822	2,014,822
LIABILITIES ASSUMED
Deposits		1,668,085	1,669,550	1,669,550
Borrowings		139,150	139,034	139,034
Other Liabilities		8,059	8,352	8,352
Total liabilities assumed		1,815,294	1,816,936	1,816,936
Excess of assets acquired over liabilities assumed		188,341	197,886	197,886
Consideration paid		467,000		467,439
Goodwill recognized		$ 270,000	$ 269,553	269,553
Fair Value Adjustments
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 - Loan Information

Acquisitions - Loan Information (Details) - Acquired Loans - USD ($) $ in Thousands	Nov. 01, 2017	Apr. 01, 2017
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	625,592
Fair value of acquired loans	$ 1,062,941
Heritage Oaks Bancorp
Business Acquisition [Line Items]
Contractual amounts due		$ 1,717,191
Cash flows not expected to be collected		4,442
Expected cash flows		1,712,749
Interest component of expected cash flows		348,100
Fair value of acquired loans		$ 1,364,649

Acquisitions - Pro Forma Inform

Acquisitions - Pro Forma Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Business Combinations [Abstract]
Net interest and other income	$ 87,969	$ 86,694	$ 85,210	$ 174,663	$ 163,050
Net income	$ 27,303	$ 28,002	$ 17,710	$ 55,305	$ 31,481
Basic earnings per share (in dollars per share)	$ 0.59	$ 0.61	$ 0.39	$ 1.20	$ 0.69
Diluted earnings per share (in dollars per share)	$ 0.58	$ 0.60	$ 0.38	$ 1.18	$ 0.68

Investment Securities - Amortiz

Investment Securities - Amortized Cost and Estimated Fair Value (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Available for sale:
Total	$ 892,063	$ 786,783
Unrealized Gain	1,853	6,161
Unrealized Loss	(19,216)	(5,515)
Estimated Fair Value	874,700	787,429
Held to maturity:
Amortized Cost	31,965	18,291
Unrealized Gain	0	0
Unrealized Loss	(838)	(209)
Estimated Fair Value	31,127	18,082
Total investment securities
Amortized Cost	924,028	805,074
Unrealized Gain	1,853	6,161
Unrealized Loss	(20,054)	(5,724)
Estimated Fair Value	905,827	805,511
Agency
Available for sale:
Total	41,567	47,051
Unrealized Gain	0	236
Unrealized Loss	(490)	(78)
Estimated Fair Value	41,077	47,209
Corporate
Available for sale:
Total	93,126	78,155
Unrealized Gain	433	1,585
Unrealized Loss	(1,057)	(194)
Estimated Fair Value	92,502	79,546
Municipal bonds
Available for sale:
Total	221,806	228,929
Unrealized Gain	1,281	3,942
Unrealized Loss	(3,186)	(743)
Estimated Fair Value	219,901	232,128
Collateralized mortgage obligation: residential
Available for sale:
Total	29,747	33,984
Unrealized Gain	81	132
Unrealized Loss	(670)	(335)
Estimated Fair Value	29,158	33,781
Mortgage-backed securities: residential
Available for sale:
Total	505,817	398,664
Unrealized Gain	58	266
Unrealized Loss	(13,813)	(4,165)
Estimated Fair Value	492,062	394,765
Held to maturity:
Amortized Cost	30,854	17,153
Unrealized Gain	0	0
Unrealized Loss	(838)	(209)
Estimated Fair Value	30,016	16,944
Other
Held to maturity:
Amortized Cost	1,111	1,138
Unrealized Gain	0	0
Unrealized Loss	0	0
Estimated Fair Value	$ 1,111	$ 1,138

Investment Securities - Narrati

Investment Securities - Narrative (Details) $ in Thousands	3 Months Ended				6 Months Ended		12 Months Ended
	Jun. 30, 2018USD ($)	Mar. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Jun. 30, 2017USD ($)	Jun. 30, 2018USD ($)purchase_agreement	Jun. 30, 2017USD ($)	Dec. 31, 2017USD ($)purchase_agreement
Investment Securities
Accumulated other comprehensive income (loss) before tax amount	$ (17,400)		$ 646		$ (17,400)		$ 646
Accumulated other comprehensive income, net of tax	(12,213)		415		$ (12,213)		$ 415
Number of inverse putable reverse repurchase of the Bank's secured by collateral | purchase_agreement					2		3
Value of inverse putable reverse repurchases secured by collateral	18,500		28,500		$ 18,500		$ 28,500
Gross gains	330	$ 6		$ 2,100	336	$ 2,100
Gross losses	0	0		(50)	0	(50)
Proceeds from sale or maturity of securities available for sale	16,200	$ 0		215,000	16,210	$ 215,000
FHLB stock	17,300				17,300
FRB stock	33,200				33,200
Other stock	32,200				32,200
Amount of stock repurchased by FHLB	0		0	$ 0
Other than temporary impairment losses					0
HOA
Investment Securities
Value of inverse putable reverse repurchases secured by collateral	23,000		17,600		23,000		17,600
Mortgage-backed securities: residential
Investment Securities
Estimated par value of securities pledged as collateral for the Bank's inverse putable reverse repurchases	46,300		55,600		46,300		55,600
Fair value of securities pledged as collateral for the Bank's inverse putable reverse repurchases	$ 47,100		$ 57,000		$ 47,100		$ 57,000

Investment Securities - Investm

Investment Securities - Investment Category and Length of Time (Details) $ in Thousands	Jun. 30, 2018USD ($)investment_security	Dec. 31, 2017USD ($)investment_security
Less than 12 Months
Number | investment_security	305	184
Fair Value	$ 568,268	$ 320,068
Gross Unrealized Holding Losses	$ (12,371)	$ (2,159)
12 Months or Longer
Number | investment_security	87	76
Fair Value	$ 144,124	$ 140,739
Gross Unrealized Holding Losses	$ (6,845)	$ (3,356)
Total
Number | investment_security	392	260
Fair Value	$ 712,392	$ 460,807
Gross Unrealized Holding Losses	$ (19,216)	$ (5,515)
Held-to-maturity, less than 12 months, number of securities | investment_security	8	2
Held-to-maturity, less than 12 months, fair value	$ 25,174	$ 10,745
Held-to-maturity, less than 12 months, gross unrealized holding losses	$ (585)	$ (133)
Held-to-maturity, 12 months or longer, number of securities | investment_security	1	1
Held-to-maturity, 12 months or longer, fair value	$ 5,953	$ 6,198
Held-to-maturity, 12 months or longer, gross unrealized holding losses	$ (253)	$ (76)
Held-to-maturity, number of securities | investment_security	9	3
Held-to-maturity securities, fair value	$ 31,127	$ 16,943
Unrealized Loss	$ (838)	$ (209)
Total securities, less than 12 months, number of securities | investment_security	313	186
Total securities, less than 12 months, fair value	$ 593,442	$ 330,813
Total securities, less than 12 months, gross unrealized holding losses	$ (12,956)	$ (2,292)
Total securities, 12 months or longer, number of securities | investment_security	88	77
Total securities, 12 months or longer, fair value	$ 150,077	$ 146,937
Total securities, 12 months or longer, gross unrealized holding losses	$ (7,098)	$ (3,432)
Total securities, number of securities | investment_security	401	263
Total securities, fair value	$ 743,519	$ 477,750
Total securities, gross unrealized holding losses	$ (20,054)	$ (5,724)
Agency
Less than 12 Months
Number | investment_security	19	6
Fair Value	$ 39,828	$ 13,754
Gross Unrealized Holding Losses	$ (471)	$ (78)
12 Months or Longer
Number | investment_security	1	0
Fair Value	$ 1,249	$ 0
Gross Unrealized Holding Losses	$ (19)	$ 0
Total
Number | investment_security	20	6
Fair Value	$ 41,077	$ 13,754
Gross Unrealized Holding Losses	$ (490)	$ (78)
Corporate
Less than 12 Months
Number | investment_security	16	4
Fair Value	$ 48,326	$ 10,079
Gross Unrealized Holding Losses	$ (880)	$ (64)
12 Months or Longer
Number | investment_security	2	2
Fair Value	$ 6,014	$ 6,076
Gross Unrealized Holding Losses	$ (177)	$ (130)
Total
Number | investment_security	18	6
Fair Value	$ 54,340	$ 16,155
Gross Unrealized Holding Losses	$ (1,057)	$ (194)
Municipal bonds
Less than 12 Months
Number | investment_security	163	103
Fair Value	$ 116,648	$ 61,313
Gross Unrealized Holding Losses	$ (2,070)	$ (268)
12 Months or Longer
Number | investment_security	32	30
Fair Value	$ 16,019	$ 15,658
Gross Unrealized Holding Losses	$ (1,116)	$ (475)
Total
Number | investment_security	195	133
Fair Value	$ 132,667	$ 76,971
Gross Unrealized Holding Losses	$ (3,186)	$ (743)
Collateralized mortgage obligation: residential
Less than 12 Months
Number | investment_security	7	5
Fair Value	$ 14,762	$ 13,971
Gross Unrealized Holding Losses	$ (400)	$ (149)
12 Months or Longer
Number | investment_security	3	3
Fair Value	$ 7,658	$ 8,943
Gross Unrealized Holding Losses	$ (270)	$ (186)
Total
Number | investment_security	10	8
Fair Value	$ 22,420	$ 22,914
Gross Unrealized Holding Losses	$ (670)	$ (335)
Mortgage-backed securities: residential
Less than 12 Months
Number | investment_security	100	66
Fair Value	$ 348,704	$ 220,951
Gross Unrealized Holding Losses	$ (8,550)	$ (1,600)
12 Months or Longer
Number | investment_security	49	41
Fair Value	$ 113,184	$ 110,062
Gross Unrealized Holding Losses	$ (5,263)	$ (2,565)
Total
Number | investment_security	149	107
Fair Value	$ 461,888	$ 331,013
Gross Unrealized Holding Losses	$ (13,813)	$ (4,165)
Held-to-maturity, less than 12 months, number of securities | investment_security	2	2
Held-to-maturity, less than 12 months, fair value	$ 1,111	$ 10,745
Held-to-maturity, less than 12 months, gross unrealized holding losses	$ 0	$ (133)
Held-to-maturity, 12 months or longer, number of securities | investment_security	0	1
Held-to-maturity, 12 months or longer, fair value	$ 0	$ 6,198
Held-to-maturity, 12 months or longer, gross unrealized holding losses	$ 0	$ (76)
Held-to-maturity, number of securities | investment_security	2	3
Held-to-maturity securities, fair value	$ 1,111	$ 16,943
Unrealized Loss	$ 0	$ (209)
Other
Total
Held-to-maturity, less than 12 months, number of securities | investment_security	6
Held-to-maturity, less than 12 months, fair value	$ 24,063
Held-to-maturity, less than 12 months, gross unrealized holding losses	$ (585)
Held-to-maturity, 12 months or longer, number of securities | investment_security	1
Held-to-maturity, 12 months or longer, fair value	$ 5,953
Held-to-maturity, 12 months or longer, gross unrealized holding losses	$ (253)
Held-to-maturity, number of securities | investment_security	7
Held-to-maturity securities, fair value	$ 30,016
Unrealized Loss	$ (838)

Investment Securities - By Cont

Investment Securities - By Contractual Maturity (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Amortized Cost
One Year or Less	$ 3,806
More than One Year to Five Years	38,142
More than Five Years to Ten Years	300,153
More than Ten Years	549,962
Total	892,063	$ 786,783
Fair Value
One Year or Less	3,807
More than One Year to Five Years	38,040
More than Five Years to Ten Years	295,613
More than Ten Years	537,240
Total	874,700	787,429
Amortized Cost
One Year or Less	0
More than One Year to Five Years	0
More than Five Years to Ten Years	0
More than Ten Years	31,965
Amortized Cost	31,965	18,291
Fair Value
One Year or Less	0
More than One Year to Five Years	0
More than Five Years to Ten Years	0
More than Ten Years	31,127
Total	31,127	18,082
Amortized Cost
One Year or Less	3,806
More than One Year to Five Years	38,142
More than Five Years to Ten Years	300,153
More than Ten Years	581,927
Total	924,028
Fair Value
One Year or Less	3,807
More than One Year to Five Years	38,040
More than Five Years to Ten Years	295,613
More than Ten Years	568,367
Total	905,827
Agency
Amortized Cost
One Year or Less	0
More than One Year to Five Years	0
More than Five Years to Ten Years	18,560
More than Ten Years	23,007
Total	41,567	47,051
Fair Value
One Year or Less	0
More than One Year to Five Years	0
More than Five Years to Ten Years	18,371
More than Ten Years	22,706
Total	41,077	47,209
Corporate
Amortized Cost
One Year or Less	0
More than One Year to Five Years	0
More than Five Years to Ten Years	93,126
More than Ten Years	0
Total	93,126	78,155
Fair Value
One Year or Less	0
More than One Year to Five Years	0
More than Five Years to Ten Years	92,502
More than Ten Years	0
Total	92,502	79,546
Municipal bonds
Amortized Cost
One Year or Less	3,806
More than One Year to Five Years	36,076
More than Five Years to Ten Years	68,094
More than Ten Years	113,830
Total	221,806	228,929
Fair Value
One Year or Less	3,807
More than One Year to Five Years	36,038
More than Five Years to Ten Years	66,741
More than Ten Years	113,315
Total	219,901	232,128
Collateralized mortgage obligation: residential
Amortized Cost
One Year or Less	0
More than One Year to Five Years	0
More than Five Years to Ten Years	934
More than Ten Years	28,813
Total	29,747	33,984
Fair Value
One Year or Less	0
More than One Year to Five Years	0
More than Five Years to Ten Years	936
More than Ten Years	28,222
Total	29,158	33,781
Mortgage-backed securities: residential
Amortized Cost
One Year or Less	0
More than One Year to Five Years	2,066
More than Five Years to Ten Years	119,439
More than Ten Years	384,312
Total	505,817	398,664
Fair Value
One Year or Less	0
More than One Year to Five Years	2,002
More than Five Years to Ten Years	117,063
More than Ten Years	372,997
Total	492,062	394,765
Amortized Cost
One Year or Less	0
More than One Year to Five Years	0
More than Five Years to Ten Years	0
More than Ten Years	30,854
Amortized Cost	30,854	17,153
Fair Value
One Year or Less	0
More than One Year to Five Years	0
More than Five Years to Ten Years	0
More than Ten Years	30,016
Total	30,016	$ 16,944
Other
Amortized Cost
One Year or Less	0
More than One Year to Five Years	0
More than Five Years to Ten Years	0
More than Ten Years	1,111
Amortized Cost	1,111
Fair Value
One Year or Less	0
More than One Year to Five Years	0
More than Five Years to Ten Years	0
More than Ten Years	1,111
Total	$ 1,111

Loans Held for Investment - Com

Loans Held for Investment - Composition of Loan Portfolio (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016
Loans Held for Investment
Gross loans held for investment	$ 6,280,849		$ 6,198,627
Deferred loan origination costs/(fees) and premiums/(discounts), net	(3,263)		(2,403)
Loans held for investment	6,277,586		6,196,224
Allowance for loan losses	(31,747)	$ (30,502)	(28,936)	$ (25,055)	$ (23,075)	$ (21,296)
Loans held for investment, net	6,245,839		6,167,288
Loans held for sale, at lower of cost or fair value	13,879		23,426
Unaccreted mark-to-market discount	22,200		29,100
Business loans
Loans Held for Investment
Gross loans held for investment	3,435,923		3,337,866
Business loans | Commercial and industrial
Loans Held for Investment
Gross loans held for investment	1,102,586		1,086,659
Allowance for loan losses	(10,164)	(9,492)	(9,721)	(7,644)	(6,949)	(6,362)
Business loans | Franchise
Loans Held for Investment
Gross loans held for investment	708,957		660,414
Allowance for loan losses	(6,181)	(6,095)	(5,797)	(5,367)	(4,474)	(3,845)
Business loans | Commercial owner occupied
Loans Held for Investment
Gross loans held for investment	1,310,722		1,289,213
Allowance for loan losses	(1,137)	(791)	(767)	(672)	(1,232)	(1,193)
Business loans | SBA
Loans Held for Investment
Gross loans held for investment	176,696		185,514
Allowance for loan losses	(2,575)	(2,814)	(2,890)	(2,519)	(1,145)	(1,039)
Business loans | Agribusiness
Loans Held for Investment
Gross loans held for investment	136,962		116,066
Allowance for loan losses	(2,694)	(2,105)	(1,291)	(206)	0	0
Real estate loans
Loans Held for Investment
Gross loans held for investment	2,762,953		2,767,830
Real estate loans | Commercial non-owner occupied
Loans Held for Investment
Gross loans held for investment	1,219,747		1,243,115
Allowance for loan losses	(1,450)	(1,337)	(1,266)	(1,204)	(1,847)	(1,715)
Real estate loans | Multi-family
Loans Held for Investment
Gross loans held for investment	805,494		794,384
Allowance for loan losses	(563)	(592)	(607)	(611)	(2,803)	(2,927)
Real estate loans | One-to-four family
Loans Held for Investment
Gross loans held for investment	249,495		270,894
Allowance for loan losses	(698)	(745)	(803)	(724)	(373)	(365)
Real estate loans | Construction
Loans Held for Investment
Gross loans held for investment	321,423		282,811
Allowance for loan losses	(4,809)	(5,075)	(4,569)	(5,036)	(4,027)	(3,632)
Real estate loans | Farmland
Loans Held for Investment
Gross loans held for investment	136,548		145,393
Allowance for loan losses	(405)	(234)	(137)	(28)	0	0
Real estate loans | Land
Loans Held for Investment
Gross loans held for investment	30,246		31,233
Allowance for loan losses	(972)	(1,172)	(993)	(959)	(204)	(198)
Consumer Loans | Consumer loans
Loans Held for Investment
Gross loans held for investment	81,973		92,931
Allowance for loan losses	$ (99)	$ (50)	$ (95)	$ (85)	$ (21)	$ (20)

Loans Held for Investment - Nar

Loans Held for Investment - Narrative (Details)	6 Months Ended	12 Months Ended
	Jun. 30, 2018USD ($)areagrade	Dec. 31, 2017USD ($)
Receivables [Abstract]
Servicing rights retained from guaranteed portion of SBA loans sold	$ 8,700,000	$ 8,800,000
Unpaid principal balance for loans and participations serviced for others	613,000,000	635,000,000
Secured loans limit to one borrower	353,000,000
Unsecured loans limit to one borrower	212,000,000
Aggregate outstanding balance of loans to one borrower of secured credit	$ 65,800,000
Number of areas where the entity's credit quality is maintained and credit risk managed | area	2
Number of Pass scale grades | grade	6
Nonaccruing loans	$ 6,039,000	3,284,000
Loans 90 days or more past due and still accruing	0	1,800,000
Investment in TDR	0	97,000
Consumer mortgage loans collateralized by residential real estate, foreclosure proceedings in process	0	$ 73,000
Outstanding balance	5,100,000
Purchased credit impaired loans, nonaccrual status	$ 0

Loans Held for Investment - Int

Loans Held for Investment - Internal Risk Grading System (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Credit Risk Grades
Gross loans	$ 6,294,728	$ 6,222,053
Pass
Credit Risk Grades
Gross loans	6,239,906	6,160,136
Special Mention
Credit Risk Grades
Gross loans	12,528	13,612
Substandard
Credit Risk Grades
Gross loans	42,294	48,305
Doubtful
Credit Risk Grades
Gross loans	0	0
Business loans | Commercial and industrial
Credit Risk Grades
Gross loans	1,102,586	1,086,659
Business loans | Franchise
Credit Risk Grades
Gross loans	708,957	660,414
Business loans | Commercial owner occupied
Credit Risk Grades
Gross loans	1,310,722	1,295,215
Business loans | SBA
Credit Risk Grades
Gross loans	185,632	202,938
Business loans | Agribusiness
Credit Risk Grades
Gross loans	136,962	116,066
Business loans | Pass | Commercial and industrial
Credit Risk Grades
Gross loans	1,080,580	1,063,452
Business loans | Pass | Franchise
Credit Risk Grades
Gross loans	708,748	660,414
Business loans | Pass | Commercial owner occupied
Credit Risk Grades
Gross loans	1,296,927	1,273,381
Business loans | Pass | SBA
Credit Risk Grades
Gross loans	181,347	199,468
Business loans | Pass | Agribusiness
Credit Risk Grades
Gross loans	128,709	108,143
Business loans | Special Mention | Commercial and industrial
Credit Risk Grades
Gross loans	9,952	8,163
Business loans | Special Mention | Franchise
Credit Risk Grades
Gross loans	0	0
Business loans | Special Mention | Commercial owner occupied
Credit Risk Grades
Gross loans	641	654
Business loans | Special Mention | SBA
Credit Risk Grades
Gross loans	1,096	1
Business loans | Special Mention | Agribusiness
Credit Risk Grades
Gross loans	0	4,079
Business loans | Substandard | Commercial and industrial
Credit Risk Grades
Gross loans	12,054	15,044
Business loans | Substandard | Franchise
Credit Risk Grades
Gross loans	209	0
Business loans | Substandard | Commercial owner occupied
Credit Risk Grades
Gross loans	13,154	21,180
Business loans | Substandard | SBA
Credit Risk Grades
Gross loans	3,189	3,469
Business loans | Substandard | Agribusiness
Credit Risk Grades
Gross loans	8,253	3,844
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	0
Real estate loans | Commercial non-owner occupied
Credit Risk Grades
Gross loans	1,224,690	1,243,115
Real estate loans | Multi-family
Credit Risk Grades
Gross loans	805,494	794,384
Real estate loans | One-to-four family
Credit Risk Grades
Gross loans	249,495	270,894
Real estate loans | Construction
Credit Risk Grades
Gross loans	321,423	282,811
Real estate loans | Farmland
Credit Risk Grades
Gross loans	136,548	145,393
Real estate loans | Land
Credit Risk Grades
Gross loans	30,246	31,233
Real estate loans | Pass | Commercial non-owner occupied
Credit Risk Grades
Gross loans	1,222,448	1,242,045
Real estate loans | Pass | Multi-family
Credit Risk Grades
Gross loans	803,977	794,156
Real estate loans | Pass | One-to-four family
Credit Risk Grades
Gross loans	247,452	268,776
Real estate loans | Pass | Construction
Credit Risk Grades
Gross loans	321,423	282,294
Real estate loans | Pass | Farmland
Credit Risk Grades
Gross loans	136,422	144,234
Real estate loans | Pass | Land
Credit Risk Grades
Gross loans	30,036	30,979
Real estate loans | Special Mention | Commercial non-owner occupied
Credit Risk Grades
Gross loans	0	0
Real estate loans | Special Mention | Multi-family
Credit Risk Grades
Gross loans	703	0
Real estate loans | Special Mention | One-to-four family
Credit Risk Grades
Gross loans	136	154
Real estate loans | Special Mention | Construction
Credit Risk Grades
Gross loans	0	517
Real estate loans | Special Mention | Farmland
Credit Risk Grades
Gross loans	0	44
Real estate loans | Special Mention | Land
Credit Risk Grades
Gross loans	0	0
Real estate loans | Substandard | Commercial non-owner occupied
Credit Risk Grades
Gross loans	2,242	1,070
Real estate loans | Substandard | Multi-family
Credit Risk Grades
Gross loans	814	228
Real estate loans | Substandard | One-to-four family
Credit Risk Grades
Gross loans	1,907	1,964
Real estate loans | Substandard | Construction
Credit Risk Grades
Gross loans	0	0
Real estate loans | Substandard | Farmland
Credit Risk Grades
Gross loans	126	1,115
Real estate loans | Substandard | Land
Credit Risk Grades
Gross loans	210	254
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	81,973	92,931
Consumer Loans | Pass | Consumer loans
Credit Risk Grades
Gross loans	81,837	92,794
Consumer Loans | Special Mention | Consumer loans
Credit Risk Grades
Gross loans	0	0
Consumer Loans | Substandard | Consumer loans
Credit Risk Grades
Gross loans	136	137
Consumer Loans | Doubtful | Consumer loans
Credit Risk Grades
Gross loans	$ 0	$ 0

Loans Held for Investment - Del

Loans Held for Investment - Delinquencies (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Other information concerning the credit quality
Gross loans	$ 6,294,728	$ 6,222,053
Non-Accruing	6,039	3,284
Current
Other information concerning the credit quality
Current	6,287,281	6,211,994
30-59
Other information concerning the credit quality
Days Past Due	3,583	5,964
60-89
Other information concerning the credit quality
Days Past Due	1,290	1,056
90
Other information concerning the credit quality
Days Past Due	2,574	3,039
Business loans | Commercial and industrial
Other information concerning the credit quality
Gross loans	1,102,586	1,086,659
Non-Accruing	1,062	1,160
Business loans | Franchise
Other information concerning the credit quality
Gross loans	708,957	660,414
Non-Accruing	209	0
Business loans | Commercial owner occupied
Other information concerning the credit quality
Gross loans	1,310,722	1,295,215
Non-Accruing	0	97
Business loans | SBA
Other information concerning the credit quality
Gross loans	185,632	202,938
Non-Accruing	1,423	1,201
Business loans | Agribusiness
Other information concerning the credit quality
Gross loans	136,962	116,066
Non-Accruing	0	0
Business loans | Current | Commercial and industrial
Other information concerning the credit quality
Current	1,100,623	1,085,770
Business loans | Current | Franchise
Other information concerning the credit quality
Current	708,748	660,414
Business loans | Current | Commercial owner occupied
Other information concerning the credit quality
Current	1,310,722	1,291,255
Business loans | Current | SBA
Other information concerning the credit quality
Current	183,835	200,821
Business loans | Current | Agribusiness
Other information concerning the credit quality
Current	136,962	116,066
Business loans | 30-59 | Commercial and industrial
Other information concerning the credit quality
Days Past Due	1,863	84
Business loans | 30-59 | Franchise
Other information concerning the credit quality
Days Past Due	0	0
Business loans | 30-59 | Commercial owner occupied
Other information concerning the credit quality
Days Past Due	0	3,474
Business loans | 30-59 | SBA
Other information concerning the credit quality
Days Past Due	488	177
Business loans | 30-59 | Agribusiness
Other information concerning the credit quality
Days Past Due	0	0
Business loans | 60-89 | Commercial and industrial
Other information concerning the credit quality
Days Past Due	0	570
Business loans | 60-89 | Franchise
Other information concerning the credit quality
Days Past Due	0	0
Business loans | 60-89 | Commercial owner occupied
Other information concerning the credit quality
Days Past Due	0	486
Business loans | 60-89 | SBA
Other information concerning the credit quality
Days Past Due	0	0
Business loans | 60-89 | Agribusiness
Other information concerning the credit quality
Days Past Due	0	0
Business loans | 90 | Commercial and industrial
Other information concerning the credit quality
Days Past Due	100	235
Business loans | 90 | Franchise
Other information concerning the credit quality
Days Past Due	209	0
Business loans | 90 | Commercial owner occupied
Other information concerning the credit quality
Days Past Due	0	0
Business loans | 90 | SBA
Other information concerning the credit quality
Days Past Due	1,309	1,940
Business loans | 90 | Agribusiness
Other information concerning the credit quality
Days Past Due	0	0
Real estate loans | Commercial non-owner occupied
Other information concerning the credit quality
Gross loans	1,224,690	1,243,115
Non-Accruing	1,290	0
Real estate loans | Multi-family
Other information concerning the credit quality
Gross loans	805,494	794,384
Non-Accruing	589	0
Real estate loans | One-to-four family
Other information concerning the credit quality
Gross loans	249,495	270,894
Non-Accruing	1,445	817
Real estate loans | Construction
Other information concerning the credit quality
Gross loans	321,423	282,811
Non-Accruing	0	0
Real estate loans | Farmland
Other information concerning the credit quality
Gross loans	136,548	145,393
Non-Accruing	0	0
Real estate loans | Land
Other information concerning the credit quality
Gross loans	30,246	31,233
Non-Accruing	6	9
Real estate loans | Current | Commercial non-owner occupied
Other information concerning the credit quality
Current	1,222,694	1,243,115
Real estate loans | Current | Multi-family
Other information concerning the credit quality
Current	804,905	792,603
Real estate loans | Current | One-to-four family
Other information concerning the credit quality
Current	248,608	269,725
Real estate loans | Current | Construction
Other information concerning the credit quality
Current	321,423	282,811
Real estate loans | Current | Farmland
Other information concerning the credit quality
Current	136,548	145,393
Real estate loans | Current | Land
Other information concerning the credit quality
Current	30,240	31,141
Real estate loans | 30-59 | Commercial non-owner occupied
Other information concerning the credit quality
Days Past Due	706	0
Real estate loans | 30-59 | Multi-family
Other information concerning the credit quality
Days Past Due	0	1,781
Real estate loans | 30-59 | One-to-four family
Other information concerning the credit quality
Days Past Due	526	354
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	83
Real estate loans | 60-89 | Commercial non-owner occupied
Other information concerning the credit quality
Days Past Due	1,290	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	0
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	0	0
Real estate loans | 90 | Multi-family
Other information concerning the credit quality
Days Past Due	589	0
Real estate loans | 90 | One-to-four family
Other information concerning the credit quality
Days Past Due	361	815
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	6	9
Consumer Loans | Consumer loans
Other information concerning the credit quality
Gross loans	81,973	92,931
Non-Accruing	15	0
Consumer Loans | Current | Consumer loans
Other information concerning the credit quality
Current	81,973	92,880
Consumer Loans | 30-59 | Consumer loans
Other information concerning the credit quality
Days Past Due	0	11
Consumer Loans | 60-89 | Consumer loans
Other information concerning the credit quality
Days Past Due	0	0
Consumer Loans | 90 | Consumer loans
Other information concerning the credit quality
Days Past Due	$ 0	$ 40

Loans Held for Investment - C47

Loans Held for Investment - Company's Investment in Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Impaired Loans
Unpaid Principal Balance	$ 10,082			$ 10,082		$ 6,896
Total impaired loans	6,039			6,039		3,284
With Specific Allowance	0			0		97
Without Specific Allowance	6,039			6,039		3,187
Specific Allowance for Impaired Loans	0		$ 0	0	$ 0	55
Average Recorded Investment	7,402	$ 7,844	471	7,623	829
Interest Income Recognized	0	0	10	0	27
Business loans | Commercial and industrial
Impaired Loans
Unpaid Principal Balance	1,523			1,523		1,585
Total impaired loans	1,062			1,062		1,160
With Specific Allowance	0			0		0
Without Specific Allowance	1,062			1,062		1,160
Specific Allowance for Impaired Loans	0		0	0	0	0
Average Recorded Investment	1,272	1,181	7	1,226	200
Interest Income Recognized	0	0	0	0	5
Business loans | Franchise
Impaired Loans
Unpaid Principal Balance	205			205
Total impaired loans	209			209
With Specific Allowance	0			0
Without Specific Allowance	209			209
Specific Allowance for Impaired Loans	0		0	0	0
Average Recorded Investment	70	0	0	35	0
Interest Income Recognized	0	0	0	0	0
Business loans | Commercial owner occupied
Impaired Loans
Unpaid Principal Balance						98
Total impaired loans						97
With Specific Allowance						97
Without Specific Allowance						0
Specific Allowance for Impaired Loans	0		0	0	0	55
Average Recorded Investment	2,317	3,475	125	2,896	192
Interest Income Recognized	0	0	2	0	5
Business loans | SBA
Impaired Loans
Unpaid Principal Balance	4,926			4,926		4,329
Total impaired loans	1,423			1,423		1,201
With Specific Allowance	0			0		0
Without Specific Allowance	1,423			1,423		1,201
Specific Allowance for Impaired Loans	0		0	0	0	0
Average Recorded Investment	1,360	1,241	222	1,300	307
Interest Income Recognized	0	0	4	0	9
Real estate loans | Commercial non-owner occupied
Impaired Loans
Unpaid Principal Balance	1,287			1,287
Total impaired loans	1,290			1,290
With Specific Allowance	0			0
Without Specific Allowance	1,290			1,290
Specific Allowance for Impaired Loans	0		0	0	0
Average Recorded Investment	430	0	0	215	0
Interest Income Recognized	0	0	0	0	0
Real estate loans | Multi-family
Impaired Loans
Unpaid Principal Balance	589			589
Total impaired loans	589			589
With Specific Allowance	0			0
Without Specific Allowance	589			589
Specific Allowance for Impaired Loans	0		0	0	0
Average Recorded Investment	589	821	0	705	0
Interest Income Recognized	0	0	0	0	0
Real estate loans | One-to-four family
Impaired Loans
Unpaid Principal Balance	1,502			1,502		849
Total impaired loans	1,445			1,445		817
With Specific Allowance	0			0		0
Without Specific Allowance	1,445			1,445		817
Specific Allowance for Impaired Loans	0		0	0	0	0
Average Recorded Investment	1,343	1,024	105	1,184	116
Interest Income Recognized	0	0	3	0	6
Real estate loans | Construction
Impaired Loans
Specific Allowance for Impaired Loans	0		0	0	0
Average Recorded Investment	0	0	0
Interest Income Recognized	0	0	0
Real estate loans | Land
Impaired Loans
Unpaid Principal Balance	34			34		35
Total impaired loans	6			6		9
With Specific Allowance	0			0		0
Without Specific Allowance	6			6		9
Specific Allowance for Impaired Loans	0		0	0	0	$ 0
Average Recorded Investment	6	8	12	7	14
Interest Income Recognized	0	0	1	0	2
Consumer Loans | Consumer loans
Impaired Loans
Unpaid Principal Balance	16			16
Total impaired loans	15			15
With Specific Allowance	0			0
Without Specific Allowance	15			15
Specific Allowance for Impaired Loans	0		0	0	0
Average Recorded Investment	15	94	0	55	0
Interest Income Recognized	$ 0	$ 0	$ 0	$ 0	$ 0

Loans Held for Investment - C48

Loans Held for Investment - Components of Impaired Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Receivables [Abstract]
Nonaccruing loans	$ 6,039	$ 3,284
Accruing loans	0	0
Total impaired loans	$ 6,039	$ 3,284

Loans Held for Investment - Pur

Loans Held for Investment - Purchased Credit Impaired Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Loans Held for Investment
Unpaid Principal Balance	$ 10,082	$ 6,896
Business loans | Commercial and industrial
Loans Held for Investment
Unpaid Principal Balance	1,523	1,585
Business loans | Commercial owner occupied
Loans Held for Investment
Unpaid Principal Balance		98
Business loans | SBA
Loans Held for Investment
Unpaid Principal Balance	4,926	4,329
Real estate loans | Commercial non-owner occupied
Loans Held for Investment
Unpaid Principal Balance	1,287
Real estate loans | One-to-four family
Loans Held for Investment
Unpaid Principal Balance	1,502	849
Consumer Loans | Consumer loans
Loans Held for Investment
Unpaid Principal Balance	16
Acquired Banks
Loans Held for Investment
Unpaid Principal Balance	5,140	8,889
Acquired Banks | Business loans | Commercial and industrial
Loans Held for Investment
Unpaid Principal Balance	3,026	3,310
Acquired Banks | Business loans | Commercial owner occupied
Loans Held for Investment
Unpaid Principal Balance	769	1,262
Acquired Banks | Business loans | SBA
Loans Held for Investment
Unpaid Principal Balance	11	1,802
Acquired Banks | Real estate loans | Commercial non-owner occupied
Loans Held for Investment
Unpaid Principal Balance	1,247	1,650
Acquired Banks | Real estate loans | One-to-four family
Loans Held for Investment
Unpaid Principal Balance	0	255
Acquired Banks | Real estate loans | Construction
Loans Held for Investment
Unpaid Principal Balance	0	517
Acquired Banks | Real estate loans | Land
Loans Held for Investment
Unpaid Principal Balance	79	83
Acquired Banks | Consumer Loans | Consumer loans
Loans Held for Investment
Unpaid Principal Balance	$ 8	$ 10

Loans Held for Investment - Acc

Loans Held for Investment - Accretable Yield Roll Forward (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Accretable yield on purchased credit impaired
Balance at the beginning of period	$ 1,709	$ 3,019	$ 3,601	$ 3,019	$ 3,747
Additions	0	0	2,036	0	2,036
Accretion	(270)	(236)	(712)	(506)	(1,341)
Payoffs	32	(1,850)	0	(1,818)	0
Reclassification from (to) nonaccretable difference	2	776	(1,428)	778	(945)
Balance at the end of period	$ 1,473	$ 1,709	$ 3,497	$ 1,473	$ 3,497

Allowance for Loan Losses (Deta

Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Allocation of allowance as well as the activity in allowance
Balance, at the beginning of the period	$ 30,502	$ 23,075	$ 28,936	$ 21,296
Charge-offs	(273)	(110)	(1,019)	(870)
Recoveries	165	186	224	223
Provisions for (reduction in) loan losses	1,353	1,904	3,606	4,406
Balance, at the end of the period	31,747	25,055	31,747	25,055
Other disclosures
Amount of allowance attributed to: Specifically evaluated impaired loans	0	0	0	0	$ 55
Amount of allowance attributed to: General portfolio allocation	31,747	25,055	31,747	25,055
Loans individually evaluated for impairment	6,039	395	$ 6,039	$ 395
Specific reserves to total loans individually evaluated for impairment			0.00%	0.00%
Loans collectively evaluated for impairment	6,274,810	4,857,648	$ 6,274,810	$ 4,857,648
General reserves to total loans collectively evaluated for impairment			0.51%	0.52%
Gross loans, excluding loan receivable held for sale	6,280,849	4,858,043	$ 6,280,849	$ 4,858,043
Total allowance to gross loans			0.51%	0.52%
Business loans | Commercial and industrial
Allocation of allowance as well as the activity in allowance
Balance, at the beginning of the period	9,492	6,949	$ 9,721	$ 6,362
Charge-offs	(246)	(110)	(911)	(862)
Recoveries	138	33	163	55
Provisions for (reduction in) loan losses	780	772	1,191	2,089
Balance, at the end of the period	10,164	7,644	10,164	7,644
Other disclosures
Amount of allowance attributed to: Specifically evaluated impaired loans	0	0	0	0	0
Amount of allowance attributed to: General portfolio allocation	10,164	7,644	10,164	7,644
Loans individually evaluated for impairment	1,062	0	$ 1,062	$ 0
Specific reserves to total loans individually evaluated for impairment			0.00%	0.00%
Loans collectively evaluated for impairment	1,101,524	733,852	$ 1,101,524	$ 733,852
General reserves to total loans collectively evaluated for impairment			0.92%	1.04%
Gross loans, excluding loan receivable held for sale	1,102,586	733,852	$ 1,102,586	$ 733,852
Total allowance to gross loans			0.92%	1.04%
Business loans | Franchise
Allocation of allowance as well as the activity in allowance
Balance, at the beginning of the period	6,095	4,474	$ 5,797	$ 3,845
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provisions for (reduction in) loan losses	86	893	384	1,522
Balance, at the end of the period	6,181	5,367	6,181	5,367
Other disclosures
Amount of allowance attributed to: Specifically evaluated impaired loans	0	0	0	0
Amount of allowance attributed to: General portfolio allocation	6,181	5,367	6,181	5,367
Loans individually evaluated for impairment	209	0	$ 209	$ 0
Specific reserves to total loans individually evaluated for impairment			0.00%	0.00%
Loans collectively evaluated for impairment	708,748	565,415	$ 708,748	$ 565,415
General reserves to total loans collectively evaluated for impairment			0.87%	0.95%
Gross loans, excluding loan receivable held for sale	708,957	565,415	$ 708,957	$ 565,415
Total allowance to gross loans			0.87%	0.95%
Business loans | Commercial owner occupied
Allocation of allowance as well as the activity in allowance
Balance, at the beginning of the period	791	1,232	$ 767	$ 1,193
Charge-offs	0	0	0	0
Recoveries	16	70	24	82
Provisions for (reduction in) loan losses	330	(630)	346	(603)
Balance, at the end of the period	1,137	672	1,137	672
Other disclosures
Amount of allowance attributed to: Specifically evaluated impaired loans	0	0	0	0	55
Amount of allowance attributed to: General portfolio allocation	1,137	672	1,137	672
Loans individually evaluated for impairment	0	206	$ 0	$ 206
Specific reserves to total loans individually evaluated for impairment			0.00%	0.00%
Loans collectively evaluated for impairment	1,310,722	729,270	$ 1,310,722	$ 729,270
General reserves to total loans collectively evaluated for impairment			0.09%	0.09%
Gross loans, excluding loan receivable held for sale	1,310,722	729,476	$ 1,310,722	$ 729,476
Total allowance to gross loans			0.09%	0.09%
Business loans | SBA
Allocation of allowance as well as the activity in allowance
Balance, at the beginning of the period	2,814	1,145	$ 2,890	$ 1,039
Charge-offs	(27)	0	(56)	(8)
Recoveries	9	81	35	83
Provisions for (reduction in) loan losses	(221)	1,293	(294)	1,405
Balance, at the end of the period	2,575	2,519	2,575	2,519
Other disclosures
Amount of allowance attributed to: Specifically evaluated impaired loans	0	0	0	0	0
Amount of allowance attributed to: General portfolio allocation	2,575	2,519	2,575	2,519
Loans individually evaluated for impairment	1,423	73	$ 1,423	$ 73
Specific reserves to total loans individually evaluated for impairment			0.00%	0.00%
Loans collectively evaluated for impairment	175,273	101,311	$ 175,273	$ 101,311
General reserves to total loans collectively evaluated for impairment			1.47%	2.49%
Gross loans, excluding loan receivable held for sale	176,696	101,384	$ 176,696	$ 101,384
Total allowance to gross loans			1.46%	2.48%
Business loans | Agribusiness
Allocation of allowance as well as the activity in allowance
Balance, at the beginning of the period	2,105	0	$ 1,291	$ 0
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provisions for (reduction in) loan losses	589	206	1,403	206
Balance, at the end of the period	2,694	206	2,694	206
Other disclosures
Amount of allowance attributed to: Specifically evaluated impaired loans	0	0	0	0
Amount of allowance attributed to: General portfolio allocation	2,694	206	2,694	206
Loans individually evaluated for impairment	0	0	$ 0	$ 0
Specific reserves to total loans individually evaluated for impairment			0.00%	0.00%
Loans collectively evaluated for impairment	136,962	98,842	$ 136,962	$ 98,842
General reserves to total loans collectively evaluated for impairment			1.97%	0.21%
Gross loans, excluding loan receivable held for sale	136,962	98,842	$ 136,962	$ 98,842
Total allowance to gross loans			1.97%	0.21%
Real estate loans | Commercial non-owner occupied
Allocation of allowance as well as the activity in allowance
Balance, at the beginning of the period	1,337	1,847	$ 1,266	$ 1,715
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provisions for (reduction in) loan losses	113	(643)	184	(511)
Balance, at the end of the period	1,450	1,204	1,450	1,204
Other disclosures
Amount of allowance attributed to: Specifically evaluated impaired loans	0	0	0	0
Amount of allowance attributed to: General portfolio allocation	1,450	1,204	1,450	1,204
Loans individually evaluated for impairment	1,290	0	$ 1,290	$ 0
Specific reserves to total loans individually evaluated for impairment			0.00%	0.00%
Loans collectively evaluated for impairment	1,218,457	1,095,184	$ 1,218,457	$ 1,095,184
General reserves to total loans collectively evaluated for impairment			0.12%	0.11%
Gross loans, excluding loan receivable held for sale	1,219,747	1,095,184	$ 1,219,747	$ 1,095,184
Total allowance to gross loans			0.12%	0.11%
Real estate loans | Multi-family
Allocation of allowance as well as the activity in allowance
Balance, at the beginning of the period	592	2,803	$ 607	$ 2,927
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provisions for (reduction in) loan losses	(29)	(2,192)	(44)	(2,316)
Balance, at the end of the period	563	611	563	611
Other disclosures
Amount of allowance attributed to: Specifically evaluated impaired loans	0	0	0	0
Amount of allowance attributed to: General portfolio allocation	563	611	563	611
Loans individually evaluated for impairment	589	0	$ 589	$ 0
Specific reserves to total loans individually evaluated for impairment			0.00%	0.00%
Loans collectively evaluated for impairment	804,905	746,547	$ 804,905	$ 746,547
General reserves to total loans collectively evaluated for impairment			0.07%	0.08%
Gross loans, excluding loan receivable held for sale	805,494	746,547	$ 805,494	$ 746,547
Total allowance to gross loans			0.07%	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	745	373	$ 803	$ 365
Charge-offs	0	0	0	0
Recoveries	1	1	1	2
Provisions for (reduction in) loan losses	(48)	350	(106)	357
Balance, at the end of the period	698	724	698	724
Other disclosures
Amount of allowance attributed to: Specifically evaluated impaired loans	0	0	0	0	0
Amount of allowance attributed to: General portfolio allocation	698	724	698	724
Loans individually evaluated for impairment	1,445	104	$ 1,445	$ 104
Specific reserves to total loans individually evaluated for impairment			0.00%	0.00%
Loans collectively evaluated for impairment	248,050	321,944	$ 248,050	$ 321,944
General reserves to total loans collectively evaluated for impairment			0.28%	0.22%
Gross loans, excluding loan receivable held for sale	249,495	322,048	$ 249,495	$ 322,048
Total allowance to gross loans			0.28%	0.22%
Real estate loans | Construction
Allocation of allowance as well as the activity in allowance
Balance, at the beginning of the period	5,075	4,027	$ 4,569	$ 3,632
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provisions for (reduction in) loan losses	(266)	1,009	240	1,404
Balance, at the end of the period	4,809	5,036	4,809	5,036
Other disclosures
Amount of allowance attributed to: Specifically evaluated impaired loans	0	0	0	0
Amount of allowance attributed to: General portfolio allocation	4,809	5,036	4,809	5,036
Loans individually evaluated for impairment	0	0	$ 0	$ 0
Specific reserves to total loans individually evaluated for impairment			0.00%	0.00%
Loans collectively evaluated for impairment	321,423	289,600	$ 321,423	$ 289,600
General reserves to total loans collectively evaluated for impairment			1.50%	1.74%
Gross loans, excluding loan receivable held for sale	321,423	289,600	$ 321,423	$ 289,600
Total allowance to gross loans			1.50%	1.74%
Real estate loans | Farmland
Allocation of allowance as well as the activity in allowance
Balance, at the beginning of the period	234	0	$ 137	$ 0
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provisions for (reduction in) loan losses	171	28	268	28
Balance, at the end of the period	405	28	405	28
Other disclosures
Amount of allowance attributed to: Specifically evaluated impaired loans	0	0	0	0
Amount of allowance attributed to: General portfolio allocation	405	28	405	28
Loans individually evaluated for impairment	0	0	$ 0	$ 0
Specific reserves to total loans individually evaluated for impairment			0.00%	0.00%
Loans collectively evaluated for impairment	136,548	136,587	$ 136,548	$ 136,587
General reserves to total loans collectively evaluated for impairment			0.30%	0.02%
Gross loans, excluding loan receivable held for sale	136,548	136,587	$ 136,548	$ 136,587
Total allowance to gross loans			0.30%	0.02%
Real estate loans | Land
Allocation of allowance as well as the activity in allowance
Balance, at the beginning of the period	1,172	204	$ 993	$ 198
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provisions for (reduction in) loan losses	(200)	755	(21)	761
Balance, at the end of the period	972	959	972	959
Other disclosures
Amount of allowance attributed to: Specifically evaluated impaired loans	0	0	0	0	$ 0
Amount of allowance attributed to: General portfolio allocation	972	959	972	959
Loans individually evaluated for impairment	6	12	$ 6	$ 12
Specific reserves to total loans individually evaluated for impairment			0.00%	0.00%
Loans collectively evaluated for impairment	30,240	31,787	$ 30,240	$ 31,787
General reserves to total loans collectively evaluated for impairment			3.21%	3.02%
Gross loans, excluding loan receivable held for sale	30,246	31,799	$ 30,246	$ 31,799
Total allowance to gross loans			3.21%	3.02%
Consumer Loans | Consumer loans
Allocation of allowance as well as the activity in allowance
Balance, at the beginning of the period	50	21	$ 95	$ 20
Charge-offs	0	0	(52)	0
Recoveries	1	1	1	1
Provisions for (reduction in) loan losses	48	63	55	64
Balance, at the end of the period	99	85	99	85
Other disclosures
Amount of allowance attributed to: Specifically evaluated impaired loans	0	0	0	0
Amount of allowance attributed to: General portfolio allocation	99	85	99	85
Loans individually evaluated for impairment	15	0	$ 15	$ 0
Specific reserves to total loans individually evaluated for impairment			0.00%	0.00%
Loans collectively evaluated for impairment	81,958	7,309	$ 81,958	$ 7,309
General reserves to total loans collectively evaluated for impairment			0.12%	1.16%
Gross loans, excluding loan receivable held for sale	$ 81,973	$ 7,309	$ 81,973	$ 7,309
Total allowance to gross loans			0.12%	1.16%
Owner Occupied Commercial Real Estate Loans Commercial And Industrial Loans And Small Business Administration Loans
Allowance for Loan Losses
Period considered for comparison of allowance for loan losses factor (in years)			1 year
Period considered for comparison of entity's allowance for loan losses factor (in years)			1 year 4 months 24 days

Subordinated Debentures (Detail

Subordinated Debentures (Details)	Nov. 01, 2017USD ($)notes	Aug. 31, 2014USD ($)	Mar. 31, 2004USD ($)	Jun. 30, 2018USD ($)	Apr. 01, 2017USD ($)
PPBI Trust I
Subordinated Debentures
Floating Rate Trust Preferred Securities issue amount			$ 10,000,000
Notes
Subordinated Debentures
Debt issued		$ 60,000,000
Fixed interest rate (as a percent)		5.75%
Contribution of net proceeds from the Private Placement to the Bank to support general corporate purposes		$ 50,000,000
Subordinated Debentures
Subordinated Debentures
Floating interest rate, base rate				three-month LIBOR
Effective rate (as a percent)				5.10%
Subordinated Debentures | Mission Community Capital Trust I
Subordinated Debentures
Effective rate (as a percent)				5.30%
Floating rate junior subordinated debt				$ 2,800,000	$ 3,100,000
Purchase accounting fair value adjustments				$ 316,000
Subordinated Debentures | Santa Lucia Bancorp (CA) Capital Trust
Subordinated Debentures
Effective rate (as a percent)				3.83%
Floating rate junior subordinated debt				$ 3,800,000	5,200,000
Purchase accounting fair value adjustments				$ 1,400,000
Subordinated Debentures | Heritage Oaks Bancorp
Subordinated Debentures
Effective rate (as a percent)				4.03%
Floating rate junior subordinated debt				$ 4,000,000	$ 5,200,000
Purchase accounting fair value adjustments				$ 1,300,000
Subordinated Debentures | LIBOR
Subordinated Debentures
Floating interest rate, basis points added to base rate (as a percent)				2.75%
Subordinated Debentures | LIBOR | Mission Community Capital Trust I
Subordinated Debentures
Floating interest rate, basis points added to base rate (as a percent)				2.95%
Subordinated Debentures | LIBOR | Santa Lucia Bancorp (CA) Capital Trust
Subordinated Debentures
Floating interest rate, basis points added to base rate (as a percent)				1.48%
Subordinated Debentures | LIBOR | Heritage Oaks Bancorp
Subordinated Debentures
Floating interest rate, basis points added to base rate (as a percent)				1.72%
Subordinated Debentures | PPBI Trust I
Subordinated Debentures
Debt issued			$ 10,300,000
Minority interest purchased (as a percent)			3.00%
Amount of minority interest purchased			$ 310,000
Subordinated Notes 7.125% | Plaza Bancorp
Subordinated Debentures
Fixed interest rate (as a percent)	7.125%
Number of subordinated notes assumed | notes	3
Debt assumed in acquisition	$ 25,000,000
Redemption price (as a percent)	103.00%
Redemption price, subsequent reduction (as a percent)	50.00%

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Earnings Per Share [Abstract]
Weighted average stock options excluded (in shares)	0	0	15,531	0	7,389
Net Income
Basic income available to common stockholders	$ 27,303	$ 28,002	$ 14,176	$ 55,305	$ 23,697
Diluted income available to common stockholders plus assumed conversions	$ 27,303	$ 28,002	$ 14,176	$ 55,305	$ 23,697
Shares
Basic income available to common stockholders (in shares)	46,053,077	45,893,496	39,586,524	45,973,727	33,591,040
Dilutive effect of share-based compensation (in shares)	649,891	758,563	680,696	704,396	676,175
Diluted income available to common stockholders plus assumed conversions (in shares)	46,702,968	46,652,059	40,267,220	46,678,123	34,267,215
Per Share Amount
Basic income available to common stockholders (in dollars per share)	$ 0.59	$ 0.61	$ 0.36	$ 1.20	$ 0.71
Diluted income available to common stockholders plus assumed conversions (in dollars per share)	$ 0.58	$ 0.60	$ 0.35	$ 1.18	$ 0.69

Fair Value of Financial Instr54

Fair Value of Financial Instruments - Fair Value Estimates (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Assets:
Investments held-to-maturity	$ 31,127	$ 18,082
Investment securities available-for-sale, at fair value	874,700	787,429
Accrued interest receivable	27,420	27,060
Level 1
Assets:
Cash and cash equivalents	131,468	197,164
Investments held-to-maturity	0	0
Investment securities available-for-sale, at fair value	0	0
Loans held for sale	0	0
Loans held for investment, net	0	0
Derivative asset	0	0
Accrued interest receivable	27,420	27,060
Liabilities:
Deposit accounts	5,139,299	5,001,053
FHLB advances	0	0
Other borrowings	0	0
Subordinated debentures	0	0
Derivative liability	0	0
Accrued interest payable	1,151	2,131
Level 1 | Interest-bearing time deposits with financial institutions
Assets:
Cash and cash equivalents	6,633	6,633
Level 2
Assets:
Cash and cash equivalents	0	0
Investments held-to-maturity	31,126	18,082
Investment securities available-for-sale, at fair value	874,700	787,429
Loans held for sale	14,940	23,524
Loans held for investment, net	0	0
Derivative asset	3,272	1,135
Accrued interest receivable	0	0
Liabilities:
Deposit accounts	1,160,215	1,074,564
FHLB advances	336,504	489,823
Other borrowings	41,514	46,373
Subordinated debentures	116,004	115,159
Derivative liability	3,272	1,135
Accrued interest payable	0	0
Level 2 | Interest-bearing time deposits with financial institutions
Assets:
Cash and cash equivalents	0	0
Level 3
Assets:
Cash and cash equivalents	0	0
Investments held-to-maturity	0	0
Investment securities available-for-sale, at fair value	0	0
Loans held for sale	0	0
Loans held for investment, net	6,279,915	6,269,366
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
Level 3 | Interest-bearing time deposits with financial institutions
Assets:
Cash and cash equivalents	0	0
Carrying Amount
Assets:
Cash and cash equivalents	131,468	197,164
Investments held-to-maturity	31,965	18,291
Investment securities available-for-sale, at fair value	874,700	787,429
FHLB, FRB and other stock	82,666	65,881
Loans held for sale	13,879	23,426
Loans held for investment, net	6,277,586	6,167,288
Derivative asset	3,272	1,135
Accrued interest receivable	27,420	27,060
Liabilities:
Deposit accounts	6,308,350	6,085,886
FHLB advances	337,638	490,148
Other borrowings	41,462	46,139
Subordinated debentures	105,253	105,123
Derivative liability	3,272	1,135
Accrued interest payable	1,151	2,131
Carrying Amount | Interest-bearing time deposits with financial institutions
Assets:
Cash and cash equivalents	6,633	6,633
Estimated Fair Value
Assets:
Cash and cash equivalents	131,468	197,164
Investments held-to-maturity	31,126	18,082
Investment securities available-for-sale, at fair value	874,700	787,429
Loans held for sale	14,940	23,524
Loans held for investment, net	6,279,915	6,269,366
Derivative asset	3,272	1,135
Accrued interest receivable	27,420	27,060
Liabilities:
Deposit accounts	6,299,514	6,075,617
FHLB advances	336,504	489,823
Other borrowings	41,514	46,373
Subordinated debentures	116,004	115,159
Derivative liability	3,272	1,135
Accrued interest payable	1,151	2,131
Estimated Fair Value | Interest-bearing time deposits with financial institutions
Assets:
Cash and cash equivalents	$ 6,633	$ 6,633

Fair Value of Financial Instr55

Fair Value of Financial Instruments - Hierarchy Table - Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Financial assets
Investment securities available-for-sale, at fair value	$ 874,700	$ 787,429
Agency
Financial assets
Investment securities available-for-sale, at fair value	41,077	47,209
Corporate
Financial assets
Investment securities available-for-sale, at fair value	92,502	79,546
Municipal bonds
Financial assets
Investment securities available-for-sale, at fair value	219,901	232,128
Collateralized mortgage obligation: residential
Financial assets
Investment securities available-for-sale, at fair value	29,158	33,781
Mortgage-backed securities: residential
Financial assets
Investment securities available-for-sale, at fair value	492,062	394,765
Level 1
Financial assets
Investment securities available-for-sale, at fair value	0	0
Derivative asset	0	0
Financial liabilities
Derivative liability	0	0
Level 2
Financial assets
Investment securities available-for-sale, at fair value	874,700	787,429
Derivative asset	3,272	1,135
Financial liabilities
Derivative liability	3,272	1,135
Level 3
Financial assets
Investment securities available-for-sale, at fair value	0	0
Derivative asset	0	0
Financial liabilities
Derivative liability	0	0
Recurring basis
Financial assets
Investment securities available-for-sale, at fair value	874,700	787,429
Derivative asset	3,272	1,135
Financial liabilities
Derivative liability	3,272	1,135
Recurring basis | Agency
Financial assets
Investment securities available-for-sale, at fair value	41,077	47,209
Recurring basis | Corporate
Financial assets
Investment securities available-for-sale, at fair value	92,502	79,546
Recurring basis | Municipal bonds
Financial assets
Investment securities available-for-sale, at fair value	219,901	232,128
Recurring basis | Collateralized mortgage obligation: residential
Financial assets
Investment securities available-for-sale, at fair value	29,158	33,781
Recurring basis | Mortgage-backed securities: residential
Financial assets
Investment securities available-for-sale, at fair value	492,062	394,765
Recurring basis | Level 1
Financial assets
Investment securities available-for-sale, at fair value	0	0
Derivative asset	0	0
Financial liabilities
Derivative liability	0	0
Recurring basis | Level 1 | Agency
Financial assets
Investment securities available-for-sale, at fair value	0	0
Recurring basis | Level 1 | Corporate
Financial assets
Investment securities available-for-sale, at fair value	0	0
Recurring basis | Level 1 | Municipal bonds
Financial assets
Investment securities available-for-sale, at fair value	0	0
Recurring basis | Level 1 | Collateralized mortgage obligation: residential
Financial assets
Investment securities available-for-sale, at fair value	0	0
Recurring basis | Level 1 | Mortgage-backed securities: residential
Financial assets
Investment securities available-for-sale, at fair value	0	0
Recurring basis | Level 2
Financial assets
Investment securities available-for-sale, at fair value	874,700	787,429
Derivative asset	3,272	1,135
Financial liabilities
Derivative liability	3,272	1,135
Recurring basis | Level 2 | Agency
Financial assets
Investment securities available-for-sale, at fair value	41,077	47,209
Recurring basis | Level 2 | Corporate
Financial assets
Investment securities available-for-sale, at fair value	92,502	79,546
Recurring basis | Level 2 | Municipal bonds
Financial assets
Investment securities available-for-sale, at fair value	219,901	232,128
Recurring basis | Level 2 | Collateralized mortgage obligation: residential
Financial assets
Investment securities available-for-sale, at fair value	29,158	33,781
Recurring basis | Level 2 | Mortgage-backed securities: residential
Financial assets
Investment securities available-for-sale, at fair value	492,062	394,765
Recurring basis | Level 3
Financial assets
Investment securities available-for-sale, at fair value	0	0
Derivative asset	0	0
Financial liabilities
Derivative liability	0	0
Recurring basis | Level 3 | Agency
Financial assets
Investment securities available-for-sale, at fair value	0	0
Recurring basis | Level 3 | Corporate
Financial assets
Investment securities available-for-sale, at fair value	0	0
Recurring basis | Level 3 | Municipal bonds
Financial assets
Investment securities available-for-sale, at fair value	0	0
Recurring basis | Level 3 | Collateralized mortgage obligation: residential
Financial assets
Investment securities available-for-sale, at fair value	0	0
Recurring basis | Level 3 | Mortgage-backed securities: residential
Financial assets
Investment securities available-for-sale, at fair value	$ 0	$ 0

Derivative Instruments (Details

Derivative Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Derivative [Line Items]
Derivative assets, fair value	$ 3,272	$ 1,135
Derivative liabilities, fair value	3,272	1,135
Not Designated as Hedging Instrument
Derivative [Line Items]
Notional	57,710	58,599
Derivative assets, fair value	3,272	1,135
Derivative liabilities, fair value	3,272	1,135
Not Designated as Hedging Instrument | Interest rate swap contracts
Derivative [Line Items]
Notional	57,710	58,599
Derivative assets, fair value	3,272	1,135
Derivative liabilities, fair value	$ 3,272	$ 1,135

Balance Sheet Offsetting (Detai

Balance Sheet Offsetting (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Financial assets:
Gross Amounts Recognized in the Consolidated Balance Sheets	$ 3,272	$ 1,833
Gross Amounts Offset in the Consolidated Balance Sheets	0	(698)
Net Amounts Presented in the Consolidated Balance Sheets	3,272	1,135
Financial Instruments	0	0
Cash Collateral	0	0
Net Amount	3,272	1,135
Financial liabilities:
Gross Amounts Recognized in the Consolidated Balance Sheets	3,272	1,135
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Net Amounts Presented in the Consolidated Balance Sheets	3,272	1,135
Financial Instruments	0	0
Cash Collateral	0	0
Net Amount	3,272	1,135
Not Designated as Hedging Instrument
Financial assets:
Gross Amounts Recognized in the Consolidated Balance Sheets	3,272	1,833
Gross Amounts Offset in the Consolidated Balance Sheets	0	(698)
Net Amounts Presented in the Consolidated Balance Sheets	3,272	1,135
Financial Instruments	0	0
Cash Collateral	0	0
Net Amount	3,272	1,135
Financial liabilities:
Gross Amounts Recognized in the Consolidated Balance Sheets	3,272	1,135
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Net Amounts Presented in the Consolidated Balance Sheets	3,272	1,135
Financial Instruments	0	0
Cash Collateral	0	0
Net Amount	$ 3,272	$ 1,135

Revenue Recognition Summary of

Revenue Recognition Summary of Company's Revenue Streams (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Interest income:
Loans	$ 85,625	$ 84,173	$ 63,554	$ 169,798	$ 105,990
Investment securities and other interest-earning assets	7,074	6,654	5,179	13,728	8,170
Total interest income	92,699	90,827	68,733	183,526	114,160
Noninterest income:
Loan servicing fees	292	345	143	637	365
Earnings on bank-owned life insurance	617	611	689	1,228	1,025
Net gain from sales of loans	3,843	2,958	2,887	6,801	5,698
Net gain from sales of investment securities	330	6	2,093	336	2,093
Other income	753	1,414	907	2,167	1,434
Total noninterest income	8,151	7,666	8,759	15,817	13,442
Service charges on deposit accounts
Noninterest income:
Noninterest income	1,057	1,150	866	2,207	1,207
Other service fee income
Noninterest income:
Noninterest income	169	146	495	315	874
Debit card interchange fee income
Noninterest income:
Noninterest income	1,090	1,036	679	2,126	746
Within Scope
Noninterest income:
Other income	297	237	90	530	139
Total noninterest income	2,613	2,569	2,130	5,178	2,966
Total revenues	2,613	2,569	2,130	5,178	2,966
Within Scope | Service charges on deposit accounts
Noninterest income:
Noninterest income	1,057	1,150	866	2,207	1,207
Within Scope | Other service fee income
Noninterest income:
Noninterest income	169	146	495	315	874
Within Scope | Debit card interchange fee income
Noninterest income:
Noninterest income	1,090	1,036	679	2,126	746
Out of Scope
Interest income:
Loans	85,625	84,173	63,554	169,798	105,990
Investment securities and other interest-earning assets	7,074	6,654	5,179	13,728	8,170
Total interest income	92,699	90,827	68,733	183,526	114,160
Noninterest income:
Loan servicing fees	292	345	143	637	365
Earnings on bank-owned life insurance	617	611	689	1,228	1,025
Net gain from sales of loans	3,843	2,958	2,887	6,801	5,698
Net gain from sales of investment securities	330	6	2,093	336	2,093
Other income	456	1,177	817	1,637	1,295
Total noninterest income	5,538	5,097	6,629	10,639	10,476
Total revenues	$ 98,237	$ 95,924	$ 75,362	$ 194,165	$ 124,636

Subsequent Events (Details)

Subsequent Events (Details) - Subsequent Event - Grandpoint Capital, Inc. $ / shares in Units, $ in Millions	Jul. 02, 2018USD ($)bank$ / sharesshares
Subsequent Event [Line Items]
Number of regional offices | bank	14
Equity issued, ratio	0.4750
Consideration paid	$ 629
Aggregate cash consideration payable	$ 28
Company's common stock value (usd per share) | $ / shares	$ 38.15
Common Stock
Subsequent Event [Line Items]
Common stock issued as consideration (in shares) | shares	15,758,089