CU Bancorp (CUNB) 10-Q 9 May 17 2017 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2017	May 01, 2017
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q1
Trading Symbol	CUNB
Entity Registrant Name	CU Bancorp
Entity Central Index Key	1,543,643
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		17,833,438

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
ASSETS
Cash and due from banks	$ 51,168	$ 41,281
Interest earning deposits in other financial institutions	313,609	167,789
Total cash and cash equivalents	364,777	209,070
Certificates of deposit in other financial institutions	48,795	51,245
Investment securities available-for-sale, at fair value	469,399	469,950
Investment securities held-to-maturity, at amortized cost	40,945	42,027
Total investment securities	510,344	511,977
Loans	2,046,138	2,050,226
Allowance for loan loss	(19,605)	(19,374)
Net loans	2,026,533	2,030,852
Premises and equipment, net	3,946	4,184
Deferred tax assets, net	15,329	17,181
Goodwill	64,603	64,603
Core deposit and leasehold right intangibles, net	5,970	6,300
Bank owned life insurance	63,595	51,216
Accrued interest receivable and other assets	39,376	48,132
Total Assets	3,143,268	2,994,760
LIABILITIES AND SHAREHOLDERS' EQUITY
Non-interest bearing demand deposits	1,485,730	1,400,097
Interest bearing transaction accounts	346,279	332,702
Money market and savings deposits	892,143	845,110
Certificates of deposit	30,623	29,480
Total deposits	2,754,775	2,607,389
Securities sold under agreements to repurchase	11,939	18,816
Subordinated debentures, net	9,896	9,856
Accrued interest payable and other liabilities	20,210	20,514
Total Liabilities	2,796,820	2,656,575
Commitments and Contingencies (Note 13)
SHAREHOLDERS' EQUITY
Serial Preferred Stock - authorized, 50,000,000 shares: Series A, non-cumulative perpetual preferred stock, $1,000 per share liquidation preference, 16,400 shares authorized, 16,400 shares issued and outstanding at March 31, 2017 and December 31, 2016, respectively	16,887	16,995
Common stock - authorized, 75,000,000 shares no par value, 17,834,183 and 17,759,006 shares issued and outstanding at March 31, 2017 and December 31, 2016, respectively	236,308	235,873
Additional paid-in capital	25,462	25,213
Retained earnings	70,645	63,163
Accumulated other comprehensive loss	(2,854)	(3,019)
Total Shareholders' Equity	346,448	338,185
Total Liabilities and Shareholders' Equity	$ 3,143,268	$ 2,994,760

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2017	Dec. 31, 2016
Preferred stock, liquidation preference per share	$ 1,000
Preferred stock, authorized shares	50,000,000	50,000,000
Common stock, shares authorized	75,000,000	75,000,000
Common stock, no par value
Common stock, shares issued	17,834,183	17,759,006
Common stock, shares outstanding	17,834,183	17,759,006
Series A Preferred Stock
Preferred stock, liquidation preference per share	$ 1,000	$ 1,000
Preferred stock, authorized shares	16,400	16,400
Preferred stock, shares issued	16,400	16,400
Preferred stock, shares outstanding	16,400	16,400

Consolidated Statements of Inco

Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Interest Income
Interest and fees on loans	$ 24,432	$ 22,578
Interest on investment securities	2,041	1,232
Interest on interest bearing deposits in other financial institutions	710	439
Total Interest Income	27,183	24,249
Interest Expense
Interest on interest bearing transaction accounts	157	99
Interest on money market and savings deposits	670	511
Interest on certificates of deposit	26	33
Interest on securities sold under agreements to repurchase	9	11
Interest on subordinated debentures	130	117
Total Interest Expense	992	771
Net Interest Income	26,191	23,478
Provision for loan losses		622
Net Interest Income After Provision For Loan Losses	26,191	22,856
Non-Interest Income
Gain on sale of securities, net	141
Gain on sale of SBA loans, net	202	554
Deposit account service charge income	1,160	1,189
Other non-interest income	1,332	1,077
Total Non-Interest Income	2,835	2,820
Non-Interest Expense
Salaries and employee benefits (includes stock based compensation expense of $773 and $834 for the three months ended March 31, 2017 and 2016, respectively)	11,061	10,153
Occupancy	1,489	1,436
Data processing	656	618
Legal and professional	1,009	475
FDIC deposit assessment	446	350
OREO loss and expenses		79
Office services expenses	380	403
Other operating expenses	1,652	1,673
Total Non-Interest Expense	16,693	15,187
Net Income Before Provision for Income Tax Expense	12,333	10,489
Provision for income tax expense	4,550	3,905
Net Income	7,783	6,584
Preferred stock dividends and discount accretion	301	303
Net Income Available to Common Shareholders	$ 7,482	$ 6,281
Earnings Per Share
Basic earnings per share	$ 0.43	$ 0.37
Diluted earnings per share	$ 0.42	$ 0.36

Consolidated Statements of Inc5

Consolidated Statements of Income (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Income Statement [Abstract]
Stock based compensation expense	$ 773	$ 834

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Statement of Comprehensive Income [Abstract]
Net Income	$ 7,783	$ 6,584
Other Comprehensive Income, net of tax:
Net change in unrealized gain on available-for-sale investment securities, net of tax	247	769
Reclassification of gain on investment securities available-for-sale to net income, net of tax	(82)
Other Comprehensive Income	165	769
Comprehensive Income	$ 7,948	$ 7,353

Consolidated Statements of Shar

Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Restricted Stock Units (RSUs)	Preferred Stock	Common Stock	Common StockRestricted Stock Units (RSUs)	Additional Paid-in Capital	Additional Paid-in CapitalRestricted Stock Units (RSUs)	Retained Earnings	Accumulated Other Comprehensive Loss
Beginning Balance (in shares) at Dec. 31, 2015			16,400	17,175,389
Beginning Balance at Dec. 31, 2015	$ 306,807		$ 16,995	$ 230,688		$ 23,017		$ 36,923	$ (816)
Net issuance of restricted stock				37,809
Exercise of stock options	1,438			$ 1,438
Exercise of stock options (in shares)				189,489
Stock based compensation expense	834					834
Restricted stock repurchase		$ (294)					$ (294)
Restricted stock repurchase (in shares)					(13,304)
Preferred stock dividends, discount accretion and net premium amortization	(150)		$ 153					(303)
Net Income	6,584							6,584
Other comprehensive income	769								769
Ending Balance (in shares) at Mar. 31, 2016			16,400	17,389,383
Ending Balance at Mar. 31, 2016	315,988		$ 17,148	$ 232,126		23,557		43,204	(47)
Beginning Balance (in shares) at Dec. 31, 2016			16,400	17,759,006
Beginning Balance at Dec. 31, 2016	338,185		$ 16,955	$ 235,873		25,213		63,163	(3,019)
Net issuance of restricted stock				60,531
Exercise of stock options	$ 435			$ 435
Exercise of stock options (in shares)	27,942			27,942
Stock based compensation expense	$ 773					773
Restricted stock repurchase		$ (524)					$ (524)
Restricted stock repurchase (in shares)					(13,296)
Preferred stock dividends, discount accretion and net premium amortization	(369)		$ (68)					(301)
Net Income	7,783							7,783
Other comprehensive income	165								165
Ending Balance (in shares) at Mar. 31, 2017			16,400	17,834,183
Ending Balance at Mar. 31, 2017	$ 346,448		$ 16,887	$ 236,308		$ 25,462		$ 70,645	$ (2,854)

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash flows from operating activities:
Net income:	$ 7,783	$ 6,584
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses		622
Provision for unfunded loan commitments		102
Stock based compensation expense	773	834
Depreciation	341	361
Net accretion of discounts/premiums for loans acquired and deferred loan fees/costs	(2,240)	(2,140)
Net amortization from investment securities	1,505	1,009
Increase in bank owned life insurance	(379)	(323)
Amortization of core deposit intangibles	284	321
Net accretion of leasehold right intangible asset and liabilities	(34)	(22)
Accretion of subordinated debenture discount	40	40
Loss on sale of OREO		14
Gain on sale of securities, net	(141)
Gain on sale of SBA loans, net	(202)	(554)
Decrease in deferred tax assets	1,732	2,381
Decrease (increase) in accrued interest receivable and other assets	8,756	(272)
Increase (decrease) in accrued interest payable and other liabilities	54	(1,622)
Increase (decrease) in fair value of derivative swap liability	(279)	561
Net cash provided by operating activities	17,993	7,896
Cash flows from investing activities:
Purchases of investment securities	(32,586)	(11,312)
Proceeds from sales of investment securities	10,601
Proceeds from repayment and maturities of investment securities	22,540	13,696
Net loan principal payments (net of loan originations)	6,761	(33,080)
Purchases of premises and equipment	(103)	(58)
Proceeds from sale of OREO		311
Net decrease in certificates of deposit in other financial institutions	2,450	2,940
Purchase of bank owned life insurance	(12,000)
Net cash used in investing activities	(2,337)	(27,503)
Cash flows from financing activities:
Net increase in non-interest bearing demand deposits	85,633	24,213
Net increase (decrease) in interest bearing transaction accounts	13,577	(3,142)
Net increase in money market and savings deposits	47,033	71,717
Net increase (decrease) in certificates of deposit	1,143	(3,694)
Net increase (decrease) in securities sold under agreements to repurchase	(6,877)	7,607
Net proceeds from stock options exercised	435	1,438
Restricted stock repurchase	(524)	(294)
Dividends paid on preferred stock	(369)	(150)
Net cash provided by financing activities	140,051	97,695
Net increase in cash and cash equivalents	155,707	78,088
Cash and cash equivalents, beginning of period	209,070	222,063
Cash and cash equivalents, end of period	364,777	300,151
Supplemental disclosures of cash flow information:
Cash paid for interest	943	782
Net cash paid for taxes		1,710
Supplemental disclosures of non-cash investing activities:
Net change in unrealized gain on available-for-sale investment securities, net of tax	$ 247	$ 769

Basis of Financial Statement Pr

Basis of Financial Statement Presentation	3 Months Ended
	Mar. 31, 2017
Accounting Policies [Abstract]
Basis of Financial Statement Presentation	Note 1 - Basis of Financial Statement Presentation CU Bancorp (the “Company”) is a bank holding company whose operating subsidiary is California United Bank. As a bank holding company, CU Bancorp is subject to regulation of the Federal Reserve Board (“FRB”). The term “Company”, as used throughout this document, refers to the consolidated financial statements of CU Bancorp and California United Bank. California United Bank (the “Bank”) is a full-service commercial business bank offering a broad range of banking products and services including: deposit services, lending and cash management to small and medium-sized businesses, to non-profit organizations, to business principals and entrepreneurs, to the professional community, including attorneys, certified public accountants, financial advisors, healthcare providers and investors. The Bank opened for business in 2005. Its headquarters office is located in Los Angeles, California. As a state chartered non-member bank, the Bank is subject to regulation by the California Department of Business Oversight (“DBO”) and the Federal Deposit Insurance Corporation (“FDIC”). The deposits of the Bank are insured by the FDIC to the maximum amount allowed by law. The consolidated financial statements include the accounts of the Company and the Bank. Significant intercompany items have been eliminated in consolidation. The accounting and reporting policies of the Company conform to U.S. generally accepted accounting principles (“GAAP”) and pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). CU Bancorp is the common shareholder of Premier Commercial Statutory Trust I, Premier Commercial Statutory Trust II, and Premier Commercial Statutory Trust III. These trusts were established for the sole purpose of issuing trust preferred securities and do not meet the criteria for consolidation. For more detail, see Note 8 – Borrowings and Subordinated Debentures. Certain information and footnote disclosures presented in the annual consolidated financial statements are not included in the interim consolidated financial statements. Accordingly, the accompanying unaudited interim consolidated financial statements should be read in conjunction with the 2016 Annual Report on Form 10-K. In the opinion of management, the accompanying interim consolidated financial statements contain all necessary adjustments of a normal recurring nature, to present fairly the consolidated financial position of the Company and the results of its operations for the interim periods presented. Use of Estimates in the Preparation of Consolidated Financial Statements The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. In addition, these accounting principles require the disclosure of contingent assets and liabilities as of the date of the consolidated financial statements. Estimates that are particularly susceptible to significant change relate to the determination of the allowance for loan loss and various assets and liabilities measured at fair value on a recurring and nonrecurring basis. While management uses the most current available information to recognize losses on loans, future additions to the allowance for loan loss may be necessary based on, among other factors, changes in local economic conditions. Business Segments The Company is organized and operates as a single reporting segment, principally engaged in commercial business banking. The Company conducts its lending and deposit operations through nine full service branch offices located in Los Angeles, Orange, Ventura and San Bernardino counties.

Recent Accounting Pronouncement

Recent Accounting Pronouncements	3 Months Ended
	Mar. 31, 2017
Accounting Changes and Error Corrections [Abstract]
Recent Accounting Pronouncements	Note 2 - Recent Accounting Pronouncements Recent Accounting Standards Not Yet Effective In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2014-09, Revenue from Contracts with Customers (Topic 606), Under current U.S. GAAP, when full consideration is not expected and financing is required by the buyer to purchase the property, there are very prescriptive requirements in determining when foreclosed real estate property sold by an institution should be derecognized and a gain or loss be recognized. The new guidance that will be applied to these sales is more principles based. For example, as it pertains to the criteria for determining how a contract should be accounted for under the new guidance, judgment will need to be exercised in evaluating if: (a) a commitment on the buyer’s part exists, (b) collection is probable in circumstances where the initial investment is minimal and (c) the buyer has obtained control of the asset, including the significant risks and rewards of the ownership. If there is no commitment on the buyer’s part, collection is not probable or the buyer has not obtained control of the asset, then a gain cannot be recognized under the new guidance. The initial investment requirement for the buyer along with the various methods for profit recognition are no longer applicable when the new guidance goes into effect. The Company will revise its current policy on the recognition and measurement of gain on sale of other real estate owned to be consistent with the new guidance, but does not expect the new guidance to have a significant impact on the consolidated financial statements of the Company when adopted. Since the inception of the Company, the level of other real estate owned has been very low and in almost all cases, full consideration was received at the time of sale and financing by the Company was not provided. For deposit-related fees, considering the straightforward nature of the arrangements with the Company’s deposits customers, the Company does not expect the recognition and measurement outcomes of deposit-related fees to be significant differently under the new guidance compared to current GAAP. ASU 2014-09 was to be effective for interim and annual periods beginning after December 15, 2016 and was to be applied on either a modified retrospective or full retrospective basis. In August 2015, the FASB issued ASU 2015-14 which defers the original effective date for all entities by one year. Public business entities should apply the guidance in ASU 2015-14 to annual reporting periods beginning after December 15, 2017, including interim reporting periods within that reporting period. Earlier application is permitted only as of annual reporting periods beginning after December 15, 2016, including interim reporting periods within that reporting period. The Company does not expect this ASU to have a material impact on the Company’s consolidated financial statements when adopted on January 1, 2018. In January 2016, the FASB issued ASU 2016-01, Financial Instruments–Overall: Recognition and Measurement of Financial Assets and Financial Liabilities The Company does not have any equity securities in its available-for-sale portfolio, but only investments in the common stock of PCBB, TIB and the FHLB, the Company’s correspondent banks. Under the current accounting policy, the Company’s investments in these common stock are carried at cost because a readily determinable fair value does not exist for these investments. Under ASU 2016-01, investment in FHLB is specifically excluded from the requirement that equity securities are to be measured at fair value with unrealized holding gains and losses reflected in net income. Furthermore, the ASU allows entities to make an irrevocable practicality exception whereby entities can make an election, on a security-by-security basis, to account for equity securities that do not have readily determinable fair value at cost, with adjustments to fair value when an observable price change occurs or impairment is identified. As such, the Company intends to continue to measure its investments in Pacific Coast Banker's Bank ("PCBB"), Texas Independent Bank ("TIB") and Federal Home Loan Bank ("FHLB") common stock at cost upon adoption on January 1, 2018. The Company does not expect this ASU to have a material impact on the Company’s consolidated financial statements when adopted. In February 2016, the FASB issued ASU 2016-02, Leases As of March 31, 2017, the Company has 10 operating leases for 10 locations under contract with a term greater than 12 months with future lease payments totaling $11 million. At adoption date, January 1, 2019, the Company will recognize a lease liability for the present value of future lease commitments and a right of use asset. The recognized right of use asset relating to operating leases will consist of the present value of future lease commitments, unamortized initial direct costs, prepaid rent, and the related unamortized balance of lease incentives. The discount rate used to present value future lease payments will be the Company’s incremental borrowing rate at the time of adoption. The Company will take a modified retrospective transition approach with application in all comparative periods presented. The Company does not expect this ASU to have a material impact on the Company’s consolidated financial statements when adopted. In June 2016, the FASB issued ASU 2016-13, Financial Instruments – Credit Losses (Topic 326) In August 2016, the FASB issued ASU 2016-15, Statement of Cash flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments • Debt prepayment of debt extinguishment costs • Settlement of zero-coupon bonds • Contingent consideration payments made after a business combination • Proceeds from the settlement of insurance claims • Proceeds from the settlement of corporate-owned life insurance policies, including bank-owned life insurance policies • Distributions received from equity method investees • Beneficial interests in securitization transactions • Separately identifiable cash flows and application of the predominance principle ASU 2016-15 is effective for public business entities 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. The Company does not expect the adoption of this ASU to have a material effect on its consolidated financial statements. In November 2016, the FASB issued ASU 2016-18, Statement of Cash flows (Topic 230): Restricted Cash In January 2017, the FASB issued ASU 2017-01, Business Combinations (Topic 805): Clarifying the Definition of Business In January 2017, the FASB issued ASU 2017-04, Intangibles–Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment, In March 2017, the FASB issued ASU 2017-08, Receivables–Nonrefundable Fees and Other Costs (Topic 310): Premium Amortization on Purchased Callable Debt Securities,

Computation of Book Value and T

Computation of Book Value and Tangible Book Value per Common Share	3 Months Ended
	Mar. 31, 2017
Text Block [Abstract]
Computation of Book Value and Tangible Book Value per Common Share	Note 3 - Computation of Book Value and Tangible Book Value per Common Share Book value per common share was calculated by dividing total shareholders’ equity less preferred stock, by the number of common shares issued and outstanding. Tangible book value per common share was calculated by dividing tangible common equity, by the number of common shares issued and outstanding. The tables below present the computation of book value and tangible book value per common share as of the dates indicated (dollars in thousands, except share and per share data): March 31, 2017 December 31, Total Shareholders’ Equity $ 346,448 $ 338,185 Less: Preferred stock 16,887 16,955 Less: Goodwill 64,603 64,603 Less: Core deposit and leasehold right intangibles, net 5,970 6,300 Tangible common equity $ 258,988 $ 250,327 Common shares issued and outstanding 17,834,183 17,759,006 Book value per common share $ 18.48 $ 18.09 Tangible book value per common share $ 14.52 $ 14.10

Computation of Earnings per Com

Computation of Earnings per Common Share	3 Months Ended
	Mar. 31, 2017
Earnings Per Share [Abstract]
Computation of Earnings per Common Share	Note 4 - Computation of Earnings per Common Share In calculating potential common shares used to determine diluted earnings per share, U.S. GAAP requires that assumed proceeds under the treasury stock method to exclude the amount of excess tax benefits that would have been recognized in additional paid-in capital. Basic and diluted earnings per common share were determined by dividing net income available to common shareholders by the applicable basic and diluted weighted average common shares outstanding. The following table shows weighted average basic common shares outstanding, potential dilutive shares related to stock options, unvested restricted stock, and weighted average diluted shares for the periods indicated (dollars in thousands, except share and per share data): Three Months Ended March 31, 2017 2016 Net Income $ 7,783 $ 6,584 Less: Preferred stock dividends and discount accretion 301 303 Net Income available to common shareholders $ 7,482 $ 6,281 Weighted average basic common shares outstanding 17,532,104 17,041,427 Dilutive effect of potential common share issuances from stock options and restricted stock 224,351 375,733 Weighted average diluted common shares outstanding 17,756,455 17,417,160 Income per common share Basic $ 0.43 $ 0.37 Diluted $ 0.42 $ 0.36 Anti-dilutive shares not included in the calculation of diluted earnings per share 4,150 3,000

Investment Securities

Investment Securities	3 Months Ended
	Mar. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Investment Securities	Note 5 - Investment Securities The investment securities portfolio has been classified into two categories: available-for-sale (“AFS”) and held-to-maturity (“HTM”). The following tables present the amortized cost, gross unrealized gains and losses, and fair values of investment securities by major category as of the dates indicated (dollars in thousands): Gross Unrealized March 31, 2017 Amortized Cost Gains Losses Fair Market Available-for-sale investment securities: U.S. Govt Agency and Sponsored Agency - Note Securities $ 10,000 $ — $ 44 $ 9,956 U.S. Govt Agency - SBA Securities 121,855 146 687 121,314 U.S. Govt Agency - GNMA Mortgage-Backed Securities 21,122 56 283 20,895 U.S. Govt Sponsored Agency - CMO & Mortgage-Backed Securities 250,344 75 3,902 246,517 Asset Backed Securities 6,913 4 142 6,775 U.S. Treasury Notes 64,089 — 147 63,942 Total available-for-sale 474,323 281 5,205 469,399 Held-to-maturity investment securities: Municipal Securities 40,945 229 15 41,159 Total held-to-maturity 40,945 229 15 41,159 0 Total investment securities $ 515,268 $ 510 $ 5,220 $ 510,558 Gross Unrealized December 31, 2016 Amortized Cost Gains Losses Fair Market Available-for-sale investment securities: U.S. Govt Agency and Sponsored Agency - Note Securities $ 10,000 $ — $ 31 $ 9,969 U.S. Govt Agency - SBA Securities 123,224 365 739 122,850 U.S. Govt Agency - GNMA Mortgage-Backed Securities 22,565 70 265 22,370 U.S. Govt Sponsored Agency - CMO & Mortgage-Backed Securities 243,159 92 4,351 238,900 Asset Backed Securities 7,111 — 215 6,896 U.S. Treasury Notes 69,101 7 143 68,965 Total available-for-sale 475,160 534 5,744 469,950 Held-to-maturity investment securities: Municipal Securities 42,027 69 159 41,937 Total held-to-maturity 42,027 69 159 41,937 Total investment securities $ 517,187 $ 603 $ 5,903 $ 511,887 The Company’s investment securities portfolio at March 31, 2017 consists of A-rated or above investment-grade securities. At March 31, 2017 and December 31, 2016, securities with a market value of $219 million and $205 million, respectively, were pledged as collateral for securities sold under agreements to repurchase, public deposits, outstanding standby letters of credit, bankruptcy deposits, and other purposes as required by various statutes and agreements. See Note 8 – Borrowings and Subordinated Debentures. The following tables present the gross unrealized losses and fair values of AFS and HTM investment securities that were in unrealized loss positions, summarized and classified according to the duration of the loss period as of the dates indicated (dollars in thousands). < 12 Continuous Months > 12 Continuous Months Total March 31, 2017 Fair Value Gross Fair Value Gross Fair Value Gross Available-for-sale investment securities: U.S. Govt Agency and Sponsored Agency – Note Securities $ 9,956 $ 44 $ — $ — $ 9,956 $ 44 U.S. Govt. Agency SBA Securities 58,673 422 37,546 265 96,219 687 U.S. Govt. Agency – GNMA Mortgage-Backed Securities 9,191 108 7,725 175 16,916 283 U.S. Govt. Sponsored Agency – CMO & Mortgage-Backed Securities 217,719 3,821 7,689 81 225,408 3,902 Asset Backed Securities — — 4,782 142 4,782 142 U.S Treasury Notes 63,943 147 — — 63,943 147 Total available-for-sale $ 359,482 $ 4,542 $ 57,742 $ 663 $ 417,224 $ 5,205 Held-to-maturity investment securities: Municipal Securities $ 7,162 $ 14 $ 307 $ 1 $ 7,469 $ 15 Total held-to-maturity $ 7,162 $ 14 $ 307 $ 1 $ 7,469 $ 15 < 12 Continuous Months > 12 Continuous Months Total December 31, 2016 Fair Value Gross Fair Value Gross Fair Value Gross Available-for-sale investment securities: U.S. Govt Agency and Sponsored Agency – Note Securities $ 9,969 $ 31 $ — $ — $ 9,969 $ 31 U.S. Govt Agency – SBA Securities 54,302 $ 451 39,322 288 93,624 739 U.S. Govt Agency – GNMA Mortgage-Backed Securities 6,652 98 8,264 167 14,916 265 U.S. Govt Sponsored Agency – CMO & Mortgage-Backed Securities 215,138 4,172 10,879 179 226,017 4,351 Asset Backed Securities — — 6,896 215 6,896 215 U.S. Treasury Notes 51,972 143 — — 51,972 143 Total available-for-sale $ 338,033 $ 4,895 $ 65,361 $ 849 $ 403,394 $ 5,744 Held-to-maturity investment securities: Municipal Securities $ 28,673 $ 158 $ 310 $ 1 $ 28,983 $ 159 Total held-to-maturity $ 28,673 $ 158 $ 310 $ 1 $ 28,983 $ 159 The unrealized losses in each of the above categories are associated with the general fluctuation of market interest rates and are not an indication of any deterioration in the credit quality of the security issuers. Further, the Company does not intend to sell these securities and is not more-likely-than-not to be required to sell the securities before the recovery of its amortized cost basis. Accordingly, the Company had no securities that were classified as other-than-temporarily impaired at March 31, 2017 or December 31, 2016, and did not recognize any impairment charges in the consolidated statements of income. The amortized cost, fair value and the weighted average yield of debt securities at March 31, 2017, are reflected in the table below (dollars in thousands). Maturity categories are determined as follows: • U.S. Govt. Agency, U.S. Treasury Notes and U.S. Govt. Sponsored Agency bonds and notes – maturity date • U.S. Govt. Sponsored Agency CMO or Mortgage-Backed Securities, U.S. Govt. Agency GNMA Mortgage-Backed Securities, Asset Backed Securities and U.S. Gov. Agency SBA Securities – estimated cash flow taking into account estimated pre-payment speeds • Municipal Securities – the earlier of the maturity date or the expected call date Although, U.S. Government Agency and U.S. Government Sponsored Agency Mortgage-Backed and CMO securities have contractual maturities through 2048, the expected maturity will differ from the contractual maturities because borrowers or issuers may have the right to prepay such obligations without penalties. March 31, 2017 Maturities Schedule of Securities (Dollars in thousands) Amortized Fair Value Weighted Available-for-sale investment securities: Due through one year $ 51,271 $ 51,239 0.87 % Due after one year through five years 37,098 36,794 1.02 % Due after five years through ten years 64,322 63,545 1.79 % Due after ten years 321,632 317,821 2.02 % Total available-for-sale $ 474,323 $ 469,399 1.78 % Held-to-maturity investment securities: Due through one year $ 2,148 $ 2,149 1.08 % Due after one year through five years 35,402 35,600 1.63 % Due after five years through ten years 1,924 1,921 1.88 % Due after ten years 1,471 1,489 3.36 % Total held-to-maturity $ 40,945 $ 41,159 1.68 % Total investment securities $ 515,269 $ 510,558 1.77 % The weighted average yields in the above table are based on effective rates of book balances at the end of the period. Investment in Federal Home Loan Bank (FHLB) Common Stock The Company’s investment in the common stock of the FHLB of San Francisco is carried at cost and was $9.1 million at March 31, 2017 and $9.1 million at December 31, 2016. The investment in FHLB stock is included in accrued interest receivable and other assets in the consolidated balance sheets and is periodically evaluated for impairment. Based on the capital adequacy of the FHLB and its overall financial condition, no impairment losses have been recorded. See Note 8 - Borrowings and Subordinated Debentures for a detailed discussion regarding the Company’s borrowings and the related requirements to hold FHLB common stock.

Loans

Loans	3 Months Ended
	Mar. 31, 2017
Receivables [Abstract]
Loans	Note 6 - Loans The following table presents the composition of the Company’s loan portfolio as of the dates indicated (dollars in thousands): March 31, 2017 Principal Net Unaccreted Net Deferred Fees Total Commercial and Industrial Loans: $ 486,646 $ (2,366 ) $ 484,280 Loans Secured by Real Estate: Owner-Occupied Nonresidential Properties 439,730 (3,461 ) 436,269 Other Nonresidential Properties 694,637 (5,622 ) 689,015 Construction, Land Development and Other Land 193,613 (1,041 ) 192,572 1-4 Family Residential Properties 119,853 (1,585 ) 118,268 Multifamily Residential Properties 95,854 (371 ) 95,483 Total Loans Secured by Real Estate 1,543,687 (12,080 ) 1,531,607 Other Loans: 30,451 (200 ) 30,251 Total Loans $ 2,060,784 $ (14,646 ) $ 2,046,138 December 31, 2016 Principal Net Unaccreted Net Deferred Fees Total Commercial and Industrial Loans: $ 505,374 $ (2,737 ) $ 502,637 Loans Secured by Real Estate: Owner-Occupied Nonresidential Properties 455,120 (3,798 ) 451,322 Other Nonresidential Properties 635,856 (5,693 ) 630,163 Construction, Land Development and Other Land 195,215 (1,156 ) 194,059 1-4 Family Residential Properties 129,261 (2,097 ) 127,164 Multifamily Residential Properties 110,336 (478 ) 109,858 Total Loans Secured by Real Estate 1,525,788 (13,222 ) 1,512,566 Other Loans: 35,246 (223 ) 35,023 Total Loans $ 2,066,408 $ (16,182 ) $ 2,050,226 Small Business Administration Loans Included in the loan portfolio is $29 million in loans that were originated under the guidelines of the Small Business Administration (“SBA”) program of which $5 million is guaranteed. The total portfolio of the SBA contractual loan balances serviced by the Company at March 31, 2017 was $102 million, of which $73 million has been sold. At March 31, 2017, there were no loans classified as held for sale. At March 31, 2017, the balance of SBA 7a loans originated during the quarter is $421 thousand, of which $316 thousand is guaranteed by the SBA. The Company does not currently plan on selling these loans, but it may choose to do so in the future. Allowance for Loan Loss The following table is a summary of the activity for the allowance for loan loss for the periods indicated (dollars in thousands): Three Months Ended March 31, 2017 2016 Allowance for loan loss at beginning of period $ 19,374 $ 15,682 Provision for loan losses — 622 Net (charge-offs) recoveries: Charge-offs — — Recoveries 231 241 Net (charge-offs) recoveries 231 241 Allowance for loan loss at end of period $ 19,605 $ 16,545 Net (charge-offs) recoveries to average loans 0.01 % 0.01 % March 31, 2017 December 31, 2016 Allowance for loan loss to total loans 0.96 % 0.94 % The following tables present, by portfolio segment, the changes in the allowance for loan loss and the recorded investment in loans as of the dates and for the periods indicated (dollars in thousands): Commercial and Industrial Construction, Land Development and Other Land Commercial and Other Real Estate Other Total Three Months Ended March 31, 2017 Allowance for loan loss – Beginning balance $ 7,130 $ 3,084 $ 8,487 $ 673 $ 19,374 Provision for loan losses (497 ) 63 739 (305 ) — Net (charge-offs) recoveries: Charge-offs — — — — — Recoveries 229 — 2 — 231 Net (charge-offs) recoveries 229 — 2 — 231 Ending balance $ 6,862 $ 3,147 $ 9,228 $ 368 $ 19,605 Commercial and Industrial Construction, Land Development and Other Land Commercial and Other Real Estate Other Total Three Months Ended March 31, 2016 Allowance for loan loss – Beginning balance $ 5,924 $ 2,076 $ 6,821 $ 861 $ 15,682 Provision for loan losses 561 635 (448 ) (126 ) 622 Net (charge-offs) recoveries: Charge-offs — — — — — Recoveries 240 — 1 — 241 Net (charge-offs) recoveries 240 — 1 — 241 Ending balance $ 6,725 $ 2,711 $ 6,374 $ 735 $ 16,545 The following tables present both the allowance for loan loss and the associated loan balance classified by loan portfolio segment and by credit evaluation methodology (dollars in thousands): Commercial Industrial Construction, Commercial and Other Real Estate Other Total March 31, 2017 Allowance for loan loss: Individually evaluated for impairment $ — $ — $ — $ — $ — Collectively evaluated for impairment 6,862 3,147 9,228 368 19,605 Purchased credit impaired (loans acquired with deteriorated credit quality) — — — — — Total Allowance for Loan Loss $ 6,862 $ 3,147 $ 9,228 $ 368 $ 19,605 Loans receivable: Individually evaluated for impairment $ 243 $ — $ 239 $ — $ 482 Collectively evaluated for impairment 483,758 192,572 1,337,572 30,251 2,044,153 Purchased credit impaired (loans acquired with deteriorated credit quality) 279 — 1,224 — 1,503 Total Loans Receivable $ 484,280 $ 192,572 $ 1,339,035 $ 30,251 $ 2,046,138 Commercial Industrial Construction, Commercial and Other Real Estate Other Total December 31, 2016 Allowance for loan loss: Individually evaluated for impairment $ — $ — $ — $ — $ — Collectively evaluated for impairment 7,130 3,084 8,487 673 19,374 Purchased credit impaired (loans acquired with deteriorated credit quality) — — — — — Total Allowance for Loan Loss $ 7,130 $ 3,084 $ 8,487 $ 673 $ 19,374 Loans receivable: Individually evaluated for impairment $ 378 $ — $ 245 $ — $ 623 Collectively evaluated for impairment 501,960 194,059 1,316,849 35,023 2,047,891 Purchased credit impaired (loans acquired with deteriorated credit quality) 299 — 1,413 — 1,712 Total Loans Receivable $ 502,637 $ 194,059 $ 1,318,507 $ 35,023 $ 2,050,226 Credit Quality of Loans The Company utilizes an internal loan classification system as a means of reporting problem and potential problem loans. Under the Company’s loan risk rating system, loans are classified as “Pass,” with problem and potential problem loans as “Special Mention,” “Substandard,” “Doubtful” and “Loss”. Individual loan risk ratings are updated continuously or at any time the situation warrants. In addition, management regularly reviews problem loans to determine whether any loan requires a classification change, in accordance with the Company’s policy and applicable regulations. The grading analysis estimates the capability of the borrower to repay the contractual obligations of the loan agreements as scheduled or at all. The internal loan classification risk grading system is based on experiences with similarly graded loans. The Company’s internally assigned grades are as follows: • Pass – loans which are protected by the current net worth and paying capacity of the obligor or by the value of the underlying collateral. There are several different levels of Pass rated credits, including “Watch” which is considered a transitory grade for pass rated loans that require greater monitoring. Loans not meeting the criteria of special mention, substandard, doubtful or loss that have been analyzed individually as part of the above described process are considered to be pass-rated loans. • Special Mention – loans where a potential weakness or risk exists, which could cause a more serious problem if not corrected. Special Mention loans do not currently expose the Company to sufficient risk to warrant classification as a Substandard, Doubtful or Loss classification, but possess weaknesses that deserve management’s close attention. • Substandard – loans that have a well-defined weakness based on objective evidence and can be characterized by the distinct possibility that the Company will sustain some loss if the deficiencies are not corrected. • Doubtful – loans classified as doubtful have all the weaknesses inherent in those classified as substandard with the added characteristic that the weaknesses present make collection or liquidation in full, on the basis of currently existing facts, conditions and values, highly questionable and improbable. • Loss – loans classified as a loss are considered uncollectible, or of such value that continuance as an asset is not warranted. The following tables present the risk category of loans by class of loans based on the most recent internal loan classification as of the dates indicated (dollars in thousands): Commercial and Industrial Construction, Land Development and Other Land Commercial and Other Real Estate Other Total March 31, 2017 Pass $ 438,605 $ 192,572 $ 1,315,830 $ 30,124 $ 1,977,131 Special Mention 20,672 — 7,028 38 27,738 Substandard 25,003 — 16,177 89 41,269 Doubtful — — — — — Total $ 484,280 $ 192,572 $ 1,339,035 $ 30,251 $ 2,046,138 Commercial and Industrial Construction, Land Development and Other Land Commercial and Other Real Estate Other Total December 31, 2016 Pass $ 456,885 $ 194,059 $ 1,288,154 $ 32,128 $ 1,971,226 Special Mention 12,774 — 7,557 — 20,331 Substandard 32,978 — 22,796 2,895 58,669 Doubtful — — — — — Total $ 502,637 $ 194,059 $ 1,318,507 $ 35,023 $ 2,050,226 Aging Analysis of Past Due and Non-Accrual Loans The following tables present an aging analysis of the recorded investment of past due loans and non-accrual loans as of the dates indicated (dollars in thousands): 31-60 Days Past Due 61-90 Days Past Due Greater 90 Days Past Due and Total Past Due and Total Non Current Total Loans March 31, 2017 Commercial and Industrial $ 86 $ — $ — $ 86 $ 521 $ 483,673 $ 484,280 Construction, Land Development and Other Land — — — — — 192,572 192,572 Commercial and Other Real Estate 209 — — 209 239 1,338,587 1,339,035 Other — — — — — 30,251 30,251 Total $ 295 $ 0 $ — $ 295 $ 760 $ 2,045,083 $ 2,046,138 31-60 Days Past Due 61-90 Days Past Due Greater 90 Days Past Due and Total Past Due and Total Non Current Total Loans December 31, 2016 Commercial and Industrial $ — $ — $ — $ — $ 675 $ 501,962 $ 502,637 Construction, Land Development and Other Land — — — — — 194,059 194,059 Commercial and Other Real Estate 212 — — 212 447 1,317,848 1,318,507 Other — — — — — 35,023 35,023 Total $ 212 $ — $ — $ 212 $ 1,122 $ 2,048,892 $ 2,050,226 Impaired Loans A loan is identified as impaired when it is probable that interest and principal will not be collected according to the contractual terms of the original loan agreement. Generally, these loans are rated substandard or worse. Most impaired loans are classified as nonaccrual. However, there are some loans that are designated impaired due to doubt regarding collectability according to contractual terms, but are both fully secured by collateral and are current in their interest and principal payments. These impaired loans that are not classified as nonaccrual continue to pay as agreed. Impaired loans are measured for allowance requirements based on the present value of expected future cash flows discounted at the loan’s effective interest rate or, as a practical expedient, at the loan’s observable market price or the fair value of the collateral if the loan is collateral dependent. The amount of an impairment allowance, if any and any subsequent changes are charged against the allowance for loan loss. A valuation allowance is established for an impaired loan when the fair value of the loan is less than the recorded investment. In certain cases, portions of impaired loans are charged-off to the fair value of the loan instead of establishing a valuation allowance and are included, when applicable, in the table below as impaired loans “with no specific allowance recorded.” The valuation allowance disclosed below is included in the allowance for loan loss reported in the consolidated balance sheets as of March 31, 2017 and December 31, 2016. The following tables present, by loan portfolio segment, the recorded investment and unpaid principal balances for impaired loans with the associated allowance amount, if applicable, for the dates and periods indicated (dollars in thousands). This table excludes purchased credit impaired loans (loans acquired in acquisitions with deteriorated credit quality) of $1.5 million and $1.7 million at March 31, 2017 and December 31, 2016, respectively. March 31, 2017 December 31, 2016 Recorded Unpaid Related Recorded Unpaid Related With no specific allowance recorded: Commercial and Industrial $ 243 $ 639 $ — $ 378 $ 1,383 $ — Commercial and Other Real Estate 239 277 — 245 282 — With an allowance recorded: Commercial and Industrial — — — — — — Total Commercial and Industrial 243 639 — 378 1,383 — Commercial and Other Real Estate 239 277 — 245 282 — Total $ 482 $ 916 $ — $ 623 $ 1,665 $ — Three Months Ended March 31, 2017 2016 Average Interest Average Interest With no specific allowance recorded: Commercial and Industrial $ 245 $ — $ 256 $ — Commercial and Other Real Estate 242 — 666 — With a specific allowance recorded: Commercial and Industrial — — — — Total: Commercial and Industrial 245 — 256 — Commercial and Other Real Estate 242 — 666 — Total $ 487 $ — $ 922 $ — The following is a summary of additional information pertaining to impaired loans for the periods indicated (dollars in thousands): Three Months Ended March 31, 2017 2016 Interest foregone on impaired loans $ 13 $ 25 Cash collections applied to reduce principal balance $ 21 $ 24 Interest income recognized on cash collections $ — $ — Troubled Debt Restructuring The Company’s loan portfolio contains certain loans that have been modified in a Troubled Debt Restructuring (“TDR”), where economic concessions have been granted to borrowers experiencing financial difficulties. Loans are restructured in an effort to maximize collections. Economic concessions can include: reductions to the stated interest rate, payment extensions, principal forgiveness or other actions. The modification process includes evaluation of impairment based on the present value of expected future cash flows, discounted at the effective interest rate of the original loan agreement, except when the sole (remaining) source of repayment for the loan is the operation or liquidation of the loan collateral. In these cases, management uses the current fair value of the collateral, less selling costs, to evaluate the loan for impairment. If management determines that the value of the modified loan is less than the recorded investment in the loan (net of previous charge-offs and unamortized premium or discount) impairment is recognized through a specific allowance or a charge-off. The following tables include the recorded investment and unpaid principal balances for troubled debt restructured loans at March 31, 2017 and March 31, 2016 (dollars in thousands). These tables include TDR loans that were purchased credit impaired (“PCI”). TDR loans that are non-PCI loans are included in the Impaired Loans tables above. As of March 31, 2017, there were two PCI loans that are considered to be TDR loans with a recorded investment of $92 thousand and unpaid principal balances of $258 thousand. As of and for the Three Months Ended March 31, 2017 Recorded Unpaid Interest Income Commercial and Industrial $ 319 $ 534 $ — Total $ 319 $ 534 $ — As of and for the Three Months Ended March 31, 2016 Recorded Unpaid Interest Commercial and Industrial $ 393 $ 615 $ — Total $ 393 $ 615 $ — There were no loans restructured during the three months ended March 31, 2017 or March 31, 2016. There have been no defaulted restructured loans during the three months ended March 31, 2017 or March 31, 2016 for loans that were restructured in the preceding 12-month periods. Loans are restructured in an effort to maximize collections. Impairment analyses are performed on the Company’s troubled debt restructured loans in conjunction with the normal allowance for loan loss process. The Company’s troubled debt restructured loans are analyzed to ensure adequate cash flow or collateral supports the outstanding loan balance. There were no commitments to lend additional funds to borrowers whose terms have been modified in troubled debt restructurings at March 31, 2017. Loans Acquired Through Acquisition The following table reflects the accretable net discount for acquired loans for the periods indicated (dollars in thousands): Three Months Ended March 31, 2017 2016 Balance, beginning of period $ 9,611 $ 14,610 Accretion, included in interest income (1,115 ) (1,133 ) Reclassifications to non-accretable yield — (7 ) Balance, end of period $ 8,496 $ 13,470 The above table reflects the fair value adjustment on the loans acquired from mergers that will be amortized to loan interest income based on the effective yield method over the remaining life of the loans. These amounts do not include the fair value adjustments on the purchased credit impaired loans acquired from mergers. Purchased Credit Impaired Loans PCI loans are acquired loans with evidence of deterioration of credit quality since origination and it is probable at the acquisition date, that the Company will not be able to collect all contractually required amounts. When the timing and/or amounts of expected cash flows on such loans are not reasonably estimable, no interest is accreted and the loan is reported as a non-accrual loan; otherwise, if the timing and amounts of expected cash flows for PCI loans are reasonably estimable, then interest is accreted and the loans are reported as accruing loans. The non-accretable difference represents the difference between the undiscounted contractual cash flows and the undiscounted expected cash flows, and also reflects the estimated credit losses in the acquired loan portfolio at the acquisition date and can fluctuate due to changes in expected cash flows during the life of the PCI loans. The following table reflects the outstanding balance and related carrying value of PCI loans as of the dates indicated (dollars in thousands): March 31, 2017 December 31, 2016 Unpaid Principal Carrying Value Unpaid Principal Carrying Value Commercial and Industrial $ 594 $ 279 $ 622 $ 299 Commercial and Other Real Estate 1,596 1,224 1,997 1,413 Total $ 2,190 $ 1,503 $ 2,619 $ 1,712 The following table reflects the activities in the accretable net discount for PCI loans for the period indicated (dollars in thousands): Three Months Ended March 31, 2017 2016 Balance, beginning of period $ 161 $ 246 Accretion, included in interest income (23 ) (20 ) Reclassifications from non-accretable yield — — Balance, end of period $ 138 $ 226

Qualified Affordable Housing Pr

Qualified Affordable Housing Project Investments	3 Months Ended
	Mar. 31, 2017
Federal Home Loan Banks [Abstract]
Qualified Affordable Housing Project Investments	Note 7 – Qualified Affordable Housing Project Investments The Company’s investment in Qualified Affordable Housing Projects that generate Low Income Housing Tax Credits (“LIHTC”) was $6.1 million at March 31, 2017 and $6.2 million at December 31, 2016. The funding liability for the LIHTC at March 31, 2017 and December 31, 2016 was $3.4 million. The amount of tax credits and other tax benefits recognized was $560 thousand and $573 thousand for the three months ended March 31, 2017 and March 31, 2016, respectively. Further, the amount of amortization expense included in the provision for income taxes was $439 thousand and $448 thousand for the three months ended March 31, 2017 and March 31, 2016, respectively.

Borrowings and Subordinated Deb

Borrowings and Subordinated Debentures	3 Months Ended
	Mar. 31, 2017
Brokers and Dealers [Abstract]
Borrowings and Subordinated Debentures	Note 8 - Borrowings and Subordinated Debentures Securities Sold Under Agreements to Repurchase The Company enters into certain transactions, the legal form of which are sales of securities under agreements to repurchase (“Repos”) at a later date at a set price. Securities sold under agreements to repurchase generally mature within 1 day to 180 days from the issue date and are routinely renewed. As discussed in Note 5 – Investment Securities, the Company has pledged certain investments as collateral for these agreements. Securities with a fair value of $50 million and $48 million were pledged to secure the Repos at March 31, 2017 and December 31, 2016, respectively. The tables below describe the terms and maturity of the Company’s securities sold under agreements to repurchase as of the dates indicated (dollars in thousands): March 31, 2017 Date Issued Amount Interest Rate Original Maturity Date March 31, 2017 $ 11,939 0.20% – 0.25% 3 days April 3, 2017 Total $ 11,939 0.24% December 31, 2016 Date Issued Amount Interest Rate Original Maturity Date December 31, 2016 $ 18,816 0.2% – 0.25% 4 days January 4, 2017 Total $ 18,816 0.25% FHLB Borrowings The Company maintains a secured credit facility with the FHLB, allowing the Company to borrow on an overnight and term basis. The Company’s credit facility with the FHLB is $749 million, which represents approximately 25% of the Bank’s total assets, as reported by the Bank in its December 31, 2016 Federal Financial Institution Examination Council (“FFIEC”) Call Report. As of March 31, 2017, the Company had $1 billion of loan collateral pledged with the FHLB which provides $688 million in borrowing capacity. The Company also has $16 million in investment securities pledged with the FHLB serving as collateral for an additional $14 million in borrowing capacity. In addition, the Company must maintain an investment in the capital stock of the FHLB. Under the FHLB Act, the FHLB has a statutory lien on the FHLB capital stock that the Company owns and the FHLB capital stock serves as further collateral under the borrowing line. The Company had no outstanding advances (borrowings) with the FHLB as of March 31, 2017 or December 31, 2016. Subordinated Debentures The following table summarizes the terms of each issuance of subordinated debentures outstanding as of the dates indicated (dollars in thousands): March 31, 2017 Series Amount (in thousands) Issuance Maturity Rate Index Current Next Reset Trust I $ 6,186 12/10/04 03/15/35 3 month LIBOR + 2.05 % 3.18 % 06/15/17 Trust II 3,093 12/23/05 03/15/36 3 month LIBOR + 1.75 % 2.88 % 06/15/17 Trust III 3,093 06/30/06 09/18/36 3 month LIBOR + 1.85 % 2.98 % 06/15/17 Subtotal 12,372 Unamortized fair value adjustment (2,476 ) Net $ 9,896 December 31, 2016 Series Amount (in thousands) Issuance Maturity Rate Index Current Next Reset Trust I $ 6,186 12/10/04 03/15/35 3 month LIBOR + 2.05 % 3.01 % 03/15/17 Trust II 3,093 12/23/05 03/15/36 3 month LIBOR + 1.75 % 2.71 % 03/15/17 Trust III 3,093 06/30/06 09/18/36 3 month LIBOR + 1.85 % 2.81 % 03/15/17 Subtotal 12,372 Unamortized fair value adjustment (2,516 ) Net $ 9,856 The Company had an aggregate outstanding contractual balance of $12.4 million in subordinated debentures at March 31, 2017. These subordinated debentures were acquired as part of the PC Bancorp merger and were issued to trusts originally established by PC Bancorp, which in turn issued trust preferred securities. These subordinated debentures were issued in three separate series. Each issuance had a maturity of 30 years from their approximate date of issue. All three subordinated debentures are variable rate instruments that reprice quarterly based on the three month London Interbank Offered Rate (“LIBOR”) plus a margin (see tables above). All three subordinated debentures had their interest rates reset in March 2017 at the current three month LIBOR plus their index, and will continue to reprice quarterly through their maturity date. All three subordinated debentures are currently callable at par with no prepayment penalties. Interest payments made by the Company on subordinated debentures are considered dividend payments under FRB regulations. Notification to the FRB is required prior to the Company declaring and paying a dividend during any period in which the Company’s quarterly net earnings are insufficient to fund the dividend amount. This notification requirement is included in regulatory guidance regarding safety and soundness surrounding capital and includes other non-financial measures such as asset quality, financial condition, capital adequacy, liquidity, future earnings projections, capital planning and credit concentrations. Should the FRB object to the dividend payments, the Company would be precluded from paying interest on the subordinated debentures after giving notice within 15 days before the payment date. Payments would not commence until approval is received or the Company no longer needs to provide notice under applicable guidance. The Company has the right, assuming no default has occurred, to defer payments of interest on the subordinated debentures at any time for a period not to exceed 20 consecutive quarters. The Company has not deferred any interest payments.

Derivative Financial Instrument

Derivative Financial Instruments	3 Months Ended
	Mar. 31, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	Note 9 - Derivative Financial Instruments The Company is exposed to certain risks relating to its ongoing business operations and utilizes interest rate swap agreements (“swaps”) as part of its asset/liability management strategy to help manage its interest rate risk position. The Company has two counterparty banks. Derivative Financial Instruments Acquired from 1 st At March 31, 2017, the Company has eleven interest rate swap agreements with customers and eleven offsetting interest-rate swaps with a counterparty bank. The swap agreements are not designated as hedging instruments. The purpose of entering into offsetting derivatives not designated as a hedging instrument is to provide the Company a variable-rate loan receivable and provide the customer the financial effects of a fixed-rate loan without creating significant interest rate risk in the Company’s earnings. The structure of the swaps is as follows: The Company enters into a swap with its customers to allow them to convert variable rate loans to fixed rate loans, and at the same time, the Company enters into a swap with the counterparty bank to allow the Company to pass on the interest-rate risk associated with fixed rate loans. The net effect of the transaction allows the Company to receive interest on the loan from the customer at a variable rate based on LIBOR plus a spread. The changes in the fair value of the swaps primarily offset each other and therefore should not have a significant impact on the Company’s results of operations. The interest rate swap derivatives acquired from 1 st The Company believes the risk of loss associated with counterparty borrowers relating to interest rate swaps is mitigated as the loans with swaps are underwritten to take into account potential additional exposure, although there can be no assurances in this regard since the performance of the swaps is subject to market and counterparty risk. At March 31, 2017 and December 31, 2016, the total notional amount of the Company’s swaps with the counterparty bank was $21 million and $24 million, respectively. The outstanding swaps have remaining maturities of up to 5 years as of March 31, 2017. The following tables present the fair values of the asset and liability of the Company’s derivative instruments acquired from 1 st Asset Derivatives March 31, 2017 December 31, 2016 Interest rate swap contracts fair value $ 421 $ 523 Balance sheet location Accrued Interest Receivable and Other Assets Accrued Interest Receivable and Other Assets Liability Derivatives March 31, 2017 December 31, 2016 Interest rate swap contracts fair value $ 421 $ 523 Balance sheet location Accrued Interest Accrued Interest Derivative Financial Instruments Acquired from PC Bancorp At March 31, 2017, the Company also has fourteen pay-fixed, receive-variable, interest rate swaps with one counterparty bank that are designed to convert fixed rate loans into variable rate loans. The following table presents the notional amount and the fair values of the asset and liability of the Company’s derivative instruments acquired from PC Bancorp as of the dates indicated (dollars in thousands): Liability Derivatives March 31, 2017 December 31, 2016 Fair Value Hedges Total interest rate contracts notional amount $ 17,392 $ 17,642 Derivatives not designated as hedging instruments: Interest rate swap contracts fair value $ 40 $ 95 Derivatives designated as hedging instruments: Interest rate swap contracts fair value 467 589 Total interest rate contracts fair value $ 507 $ 684 Balance sheet location Accrued Accrued The Effect of Derivative Instruments on the Consolidated Statements of Income The following table summarizes the effect of derivative financial instruments on the consolidated statements of income for the periods indicated (dollars in thousands): Three Months Ended March 31, 2017 2016 Derivatives not designated as hedging instruments: Interest rate swap contracts – loans Increase in fair value of interest rate swap contracts $ 55 $ 39 Payments on interest rate swap contracts on loans (54 ) (61 ) Net increase (decrease) in other non-interest income 1 (22 ) Derivatives designated as hedging instruments: Interest rate swap contracts – loans Increase in fair value of interest rate swap contracts $ 122 $ 23 Increase (decrease) in fair value of hedged loans (12 ) 212 Payment on interest rate swap contracts on loans (114 ) (230 ) Net increase (decrease) in interest income on loans $ (4 ) $ 5 Under all of the Company’s interest rate swap contracts, the Company is required to pledge and maintain collateral for the credit support under these agreements. At March 31, 2017, the Company has pledged $1.7 million in investment securities, $2.7 million in certificates of deposit, for a total of $4.4 million, as collateral under the swap agreements.

Balance Sheet Offsetting

Balance Sheet Offsetting	3 Months Ended
	Mar. 31, 2017
Text Block [Abstract]
Balance Sheet Offsetting	Note 10 – Balance Sheet Offsetting Assets and liabilities relating to certain financial instruments, including derivatives, and securities sold under repurchase agreements (“Repos”), may be eligible for offset in the consolidated balance sheets as permitted under accounting guidance. The Company’s interest rate swap derivatives are subject to a master bilateral netting and offsetting arrangement under specific conditions as defined within a master agreement governing all interest rate swap contracts that the Company and the counterparty banks have entered into. In addition, the master agreement under which the interest rate contracts have been written require the pledging of assets by the Company based on certain risk thresholds. The Company has pledged a certificate of deposit and investment securities as collateral under the swap agreements. The pledged collateral under the swap agreements are reported in the Company’s consolidated balance sheets, unless the Company defaults under the master agreement. The Company currently does not net or offset the interest rate swap contracts in its consolidated balance sheets, as reflected within the table below. The Company’s securities sold under repurchase agreements represent transactions the Company has entered into with several deposit customers. These transactions represent the sale of securities on an overnight or on a term basis to our deposit customers under an agreement to repurchase the securities from the customers the next business day or at maturity. There is an individual contract for each customer with only one transaction per customer. There is no master agreement that provides for the netting arrangement or the offsetting of these individual transactions or for the netting of collateral positions. The Company does not net or offset the Repos in its consolidated balance sheets as reflected within the table below. The table below presents the Company’s financial instruments that may be eligible for offsetting which include securities sold under agreements to repurchase that have no enforceable master netting arrangement and derivative securities that could be offset in the consolidated financial statements due to an enforceable master netting arrangement (dollars in thousands): Gross Gross Net Amounts in the Gross Amounts Not Offset in the Consolidated Balance Sheets Net Amount Financial Collateral March 31, 2017 Financial Assets: Interest rate swap contracts fair value (See Note 9 – Derivative Financial Instruments) $ 421 $ — $ 421 $ 421 $ — $ — Total $ 421 $ — $ 421 $ 421 $ — $ — Financial Liabilities: Interest rate swap contracts fair value (See Note 9 – Derivative Financial Instruments) $ 928 $ — $ 928 $ 928 $ 4,451 $ 3,523 Securities sold under agreements to repurchase (See Note 8 – Borrowings and Subordinated Debentures) 11,939 — 11,939 11,939 49,901 37,962 Total $ 12,867 $ — $ 12,867 $ 12,867 $ 54,352 $ 41,485 Gross Gross Net Amounts in the Gross Amounts Not Offset in the Consolidated Balance Sheets Net Amount Financial Collateral December 31, 2016 Financial Assets: Interest rate swap contracts fair value (See Note 9 – Derivative Financial Instruments) $ 523 $ — $ 523 $ 523 $ — $ — Total $ 523 $ — $ 523 $ 523 $ — $ — Financial Liabilities: Interest rate swap contracts fair value (See Note 9 – Derivative Financial Instruments) $ 1,207 $ — $ 1,207 $ 1,207 $ 4,555 $ 3,348 Securities sold under agreements to repurchase (See Note 8 – Borrowings and Subordinated Debentures) 18,816 — 18,816 18,816 48,204 29,388 Total $ 20,023 $ — $ 20,023 $ 20,023 $ 52,759 $ 32,736

Stock Options and Restricted St

Stock Options and Restricted Stock	3 Months Ended
	Mar. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock Options and Restricted Stock	Note 11 - Stock Options and Restricted Stock Equity Compensation Plans The Company’s 2007 Equity and Incentive Plan (“Equity Plan”) was adopted by the Company in 2007 and is designed to promote the interest of the Company in aiding the Company to attract and retain employees, officers and non-employee directors who are expected to contribute to the future success of the organization. This plan provides the Company with a flexible equity incentive compensation program, which allows the Company to grant stock options, restricted stock, restricted stock award units and performance units. Certain options and share awards provide for accelerated vesting, if there is a change in control, as defined in the Equity Plan. At March 31, 2017 future compensation expense related to unvested restricted stock grants are reflected in the table below (dollars in thousands): Future Restricted Stock Expense Remainder of 2017 $ 2,451 2018 1,596 2019 539 2020 171 Thereafter 22 Total $ 4,779 At March 31, 2017, the weighted-average period over which the total compensation cost related to unvested restricted stock grants not yet recognized is 2.75 years. Stock Options The following table summarizes the share option activity under the plans as of the date and for the period indicated: Shares Weighted Weighted Aggregate Outstanding stock options at December 31, 2016 47,697 $ 12.69 1.43 $ 1,102 Granted — Exercised (27,942 ) Forfeited — Expired — Outstanding stock options at March 31, 2017 19,755 $ 8.67 2.13 $ 612 Exercisable options at March 31, 2017 19,755 $ 8.67 2.13 $ 612 Unvested options at March 31, 2017 — The total intrinsic value of options exercised during the three months ended March 31, 2017 and 2016 was $642 thousand and $2.9 million, respectively. Restricted Stock The weighted-average grant-date fair value per share in the table below is calculated by taking the total aggregate cost of the restricted shares issued divided by the number of shares of restricted stock issued. The aggregate cost of the restricted stock was calculated by multiplying the number of shares granted at each of the grant dates by the closing stock price of the Company’s common stock on the date of the grant. The following table summarizes the restricted stock activity under the Equity Plan for the period indicated: Number of Shares Weighted-Average Grant-Date Fair Value Restricted Stock: Unvested at December 31, 2016 282,082 $ 21.98 Granted 65,615 38.04 Vested (30,582 ) 20.87 Forfeited (5,084 ) 21.59 Unvested at March 31, 2017 312,031 $ 25.79 Restricted stock compensation expense was $773 thousand and $834 thousand for the three month period ended March 31, 2017 and 2016, respectively. Restricted stock awards reflected in the table above are valued at the closing stock price on the date of grant and are expensed to stock based compensation expense over the period for which the related service is performed. In 2015, the Company granted 40 thousand shares of Restricted Stock Unit (“RSU”) under the Equity Plan to one of its executive officers. Such grant is reflected in the table above. The shares of common stock underlying the 40 thousand shares of RSU will not be issued until the RSUs vest and meet certain conditions as stipulated in the RSU agreement and are not included in the Company’s shares issued and outstanding as of March 31, 2017. The RSUs are valued at the closing stock price on the date of grant and are expensed to stock based compensation expense over the period for which the related service is performed.

Shareholders' Equity

Shareholders' Equity	3 Months Ended
	Mar. 31, 2017
Equity [Abstract]
Shareholders' Equity	Note 12 – Shareholders’ Equity Common Stock Holders of shares of the Company’s common stock are entitled to one vote for each share held of record on all matters voted upon by shareholders. Furthermore, the holders of the Company’s common stock have no preemptive rights to subscribe for new issue securities, and shares of the Company’s common stock are not subject to redemption, conversion, or sinking fund provisions. With respect to the payment of dividends, after the preferential dividends upon all other classes and series of stock entitled thereto have been paid or declared and set apart for payment, then the holders of the Company’s common stock are entitled to such dividends as may be declared by the Company’s board of directors out of funds legally available under the laws of the State of California. Upon the Company’s liquidation or dissolution, the assets legally available for distribution to holders of the Company’s shares of common stock, after payment of all the Company’s obligations and payment of any liquidation preference of all other classes and series of stock entitled thereto, including the Company’s preferred stock, are distributable ratably among the holders of the Company’s common stock. During 2017, the Company issued 27,942 shares of stock from the exercise of stock options for a total value of $435 thousand. The Company also issued 65,615 shares of restricted stock to the Company’s directors and employees, 5,084 shares of unvested restricted stock were forfeited related to employee turnover and 13,296 shares that had a value of $524 thousand were repurchased when employees elected to pay their tax obligation via the repurchase of the stock by the Company. The Equity Plan, as amended, allows employees to make an election to have a portion of their restricted stock that became vested during the year repurchased by the Company to provide funds to pay the employee’s tax obligation related to the vesting of the stock. Preferred Stock The Company completed the merger with 1 st st Dividends on the Company’s Series A Preferred Stock are payable quarterly in arrears if authorized and declared by the Company’s board of directors out of legally available funds, on a non-cumulative basis, on the $1 thousand per share liquidation preference amount. Dividends are payable on January 1, April 1, July 1 and October 1 of each year. The current coupon dividend rate was adjusted to 9% on March 1, 2016 through perpetuity. However, the dividend yield through November 30, 2018 approximates 7% as a result of business combination accounting. Dividends on the Series A Preferred Stock are non-cumulative. There is no sinking fund with respect to dividends on the Series A Preferred Stock. So long as the Company’s Series A Preferred Stock remains outstanding, the Company may declare and pay dividends on the common stock only if full dividends on all outstanding shares of Series A Preferred Stock for the most recently completed dividend period have been or are contemporaneously declared and paid. In the event of any voluntary or involuntary liquidation, dissolution or winding up of the affairs of the Company, holders of the Series A Preferred Stock will be entitled to receive for each share of Series A Preferred Stock, out of the Company’s assets or proceeds available for distribution to the Company’s shareholders, subject to any rights of the Company’s creditors, before any distribution of assets or proceeds is made to or set aside for the holders of the common stock, payment of an amount equal to the sum of (i) the $1 thousand liquidation preference amount per share and (ii) the amount of any accrued and unpaid dividends on the Series A Preferred Stock. To the extent the assets or proceeds available for distribution to shareholders are not sufficient to fully pay the liquidation payments owing to the holders of the Series A Preferred Stock and the holders of any other class or series of the stock ranking equally with the Series A Preferred Stock, the holders of the Series A Preferred Stock and such the Company’s stock will share ratably in the distribution. Holders of the Series A Preferred Stock have no right to exchange or convert their shares into common stock or any other securities and do not have voting rights. Accumulated Other Comprehensive Income (Loss) The following table presents the changes in accumulated other comprehensive loss by component for the periods indicated (dollars in thousands): Three Months Ended March 31, Consolidated Statement of Income Line Item for Reclassified Items 2017 2016 Beginning balance, net of tax $ (3,019 ) $ (816 ) Net unrealized gain arising during the period 426 1,328 Related tax effect (179 ) (559 ) Reclassification of gain on investment securities available-for-sale to net income (141 ) — Gain on sale of securities, net Related tax effect 59 — Provision for income tax expense Other Comprehensive Income 165 769 Ending balance $ (2,854 ) $ (47 )

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 13 - Commitments and Contingencies Litigation From time to time the Company is a party to claims and legal proceedings arising in the ordinary course of business. The Company accrues for any probable loss contingencies that are estimable and discloses any material losses. As of March 31, 2017, there were no legal proceedings against the Company the outcome of which are expected to have a material adverse impact on the Company’s financial position, results of operations or cash flows, as a whole. Financial Instruments with Off Balance Sheet Risk Financial instruments with off balance sheet risk include commitments to extend credit of $986 million and $1 billion at March 31, 2017 and December 31, 2016, respectively. Included in the aforementioned commitments were standby letters of credit outstanding of $85 million at March 31, 2017 and December 31, 2016. The Company also has a reserve for estimated losses on unfunded loan commitments of $886 thousand at March 31, 2017 and December 31, 2016. These balances are included in other liabilities on the consolidated balance sheets.

Fair Value Information

Fair Value Information	3 Months Ended
	Mar. 31, 2017
Fair Value Disclosures [Abstract]
Fair Value Information	Note 14 - Fair Value Information Fair Value Hierarchy Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in the principal or most advantageous market for an asset or liability in an orderly transaction between market participants at the measurement date. 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. These levels are as follows: • Level 1 – Observable unadjusted quoted market prices in active markets for identical assets and liabilities that the reporting entity has the ability to access at the measurement date. • Level 2 – Significant other observable market based inputs, other than Level 1 prices such as quoted prices for similar assets or liabilities or unobservable inputs that are corroborated by market data. This includes quoted prices in markets that are not active, or other inputs that are observable or can be corroborated by observable market data, either directly or indirectly. This would include those financial instruments that are valued using models or other valuation methodologies where substantially all of the assumptions are observable in the marketplace, can be derived from observable market data or are supported by observable levels at which transactions are executed in the marketplace. • Level 3 – Significant unobservable inputs that reflect a reporting entity’s evaluation about the assumptions that market participants would use in pricing an asset or liability. Assets measured utilizing level 3 are for positions that are not traded in active markets or are subject to transfer restrictions, and or where valuations are adjusted to reflect illiquidity and or non-transferability. These assumptions are not corroborated by market data. This is comprised of financial instruments whose fair value is estimated based on internally developed models or methodologies utilizing significant inputs that are generally less readily observable from objective sources. Management uses a combination of reviews of the underlying financial statements, appraisals and management’s judgment regarding credit quality to determine the value of the financial asset or liability. 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. Securities available-for-sale and interest rate swaps are recorded at fair value on a recurring basis. Additionally, certain assets are not measured at fair value on an ongoing basis, but are subject to fair value adjustments in certain circumstances, for example, when there is evidence of impairment. These include assets that are measured at the lower of cost or fair value, such as other real estate owned, SBA servicing asset and impaired loans that are collateral dependent. The estimated fair value amounts have been determined by the Company using available market information and appropriate valuation methodologies. However, considerable judgment is required to develop the estimates of fair value. Accordingly, the estimates presented below are not necessarily indicative of the amounts the Company could have realized in a current market exchange as of March 31, 2017. The use of different market assumptions and/or estimation methodologies may have a material effect on the estimated fair value amounts. Recurring Fair Value Measurements The valuation methodologies for estimating the fair value of financial assets and financial liabilities measured and reported at fair value on a recurring basis are discussed below. Investment Securities Available-for-Sale Interest Rate Swap Contracts The following table presents the financial assets and financial liabilities measured at fair value on a recurring basis as of the dates indicated, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value (dollars in thousands): Fair Value Quoted Prices Significant Significant Financial Assets – March 31, 2017 Investment securities available-for-sale: U.S. Govt Agency and Sponsored Agency – Note Securities $ 9,956 $ — $ 9,956 — U.S. Govt Agency – SBA Securities 121,314 — 121,314 — U.S. Govt Agency – GNMA Mortgage-Backed Securities 20,895 — 20,895 — U.S. Govt Sponsored Agency – CMO & Mortgage-Backed Securities 246,517 — 246,517 — Asset Backed Securities 6,775 — 6,775 — U.S. Treasury Notes 63,942 63,942 — — Interest Rate Swap Contracts 421 — 421 — $ 469,820 $ 63,942 $ 405,878 $ — Financial Liabilities – March 31, 2017 Interest Rate Swap Contracts $ 928 $ — $ 928 $ — Financial Assets – December 31, 2016 Investment securities available-for-sale: U.S. Govt Agency and Sponsored Agency – Note Securities $ 9,969 $ — $ 9,969 — U.S. Govt Agency – SBA Securities 122,850 — 122,850 — U.S. Govt Agency – GNMA Mortgage-Backed Securities 22,370 — 22,370 — U.S. Govt Sponsored Agency – CMO & Mortgage-Backed Securities 238,900 — 238,900 — Asset Backed Securities 6,896 — 6,896 — U.S. Treasury Notes 68,965 68,965 — — Interest Rate Swap Contracts 523 — 523 — $ 470,473 $ 68,965 $ 401,508 $ — Financial Liabilities – December 31, 2016 Interest Rate Swap Contracts $ 1,207 $ — $ 1,207 $ — At March 31, 2017 and December 31, 2016, the Company had no financial assets or liabilities that were measured at fair value on a recurring basis that required the use of significant unobservable inputs (Level 3). Furthermore, there were no transfers of assets either between Level 1 and Level 2 nor in or out of Level 3 of the fair value hierarchy for assets measured on a recurring basis for the periods ended March 31, 2017 or December 31, 2016. Nonrecurring Fair Value Measurements The valuation methodologies for estimating the fair value of certain assets measured and reported at fair value on a nonrecurring basis are discussed below. Other Real Estate Owned SBA Servicing Asset Impaired Loans The following table presents the balances of assets measured at fair value on a non-recurring basis by level within the fair value hierarchy as of the dates indicated (dollars in thousands): Net Carrying Quoted Prices (Level 1) Significant (Level 2) Significant (Level 3) Financial Assets – March 31, 2017 SBA Servicing Asset $ 876 $ — $ — $ 876 Total $ 876 $ — $ — $ 876 Net Carrying Quoted Prices (Level 1) Significant (Level 2) Significant (Level 3) Financial Assets – December 31, 2016 Collateral dependent impaired loans with specific valuation allowance and/or partial charge-offs (non-purchased credit impaired loans) $ 73 $ — $ — $ 73 SBA Servicing Asset 940 — — 940 Total $ 1,013 $ — $ — $ 1,013 There were no transfers of assets either between Level 1 and Level 2 nor in or out of Level 3 of the fair value hierarchy for assets measured on a non-recurring basis for the periods ended March 31, 2017 or December 31, 2016. The following table presents the significant unobservable inputs used in the fair value measurements for Level 3 assets measured at fair value on a non-recurring basis as of the dates indicated (dollars in thousands): Fair Value Valuation Methodology Unobservable Valuation Inputs Unobservable Input Values Financial Assets – March 31, 2017 Discount Rates 13% SBA Servicing Asset $ 876 Discounted Cash Flow Estimated Average Remaining Life of SBA Portfolio 39 months Total $ 876 Fair Value Valuation Methodology Unobservable Valuation Inputs Unobservable Input Values Financial Assets – December 31, 2016 Collateral dependent impaired loans with specific valuation allowance and/or partial charge-off $ 73 Credit loss estimate of aged accounts receivable collateral Credit loss factors on aging of accounts receivable collateral 20% Discount Rates 13% SBA Servicing Asset 940 Discounted Cash Flow Estimated Average Remaining Life of SBA Portfolio 39 months Total $ 1,013 Fair Value of Financial Instruments The following are the valuation methodologies utilized for estimating the fair value of certain financial instruments presented in the tables below. Cash and due from banks Interest earning deposits in other financial institutions short-term Investment Securities Held-to-Maturity: Loans Bank owned life insurance FHLB Stock Non-Maturing Deposits Maturing Deposits Securities Sold under Agreements to Repurchase (“Repos”) Subordinated Debentures Fair Value of Commitments : The table below presents the carrying amounts and fair values of certain financial instruments based on their fair value hierarchy indicated (dollars in thousands): Fair Value Measurements Carrying Estimated Fair Quoted Prices Significant Significant March 31, 2017 Financial Assets Cash and due from banks $ 51,168 $ 51,168 $ 51,168 $ — $ — Interest earning deposits in other financial institutions 313,609 313,609 313,609 — — Investment securities held-to-maturity 40,945 41,159 — 41,159 — Loans, net 2,026,533 2,044,209 — — 2,044,209 Bank owned life insurance 63,595 63,595 — — 63,595 FHLB Stock 9,182 9,182 — — 9,182 Financial Liabilities Certificates of deposit 30,623 30,625 — 30,625 — Securities sold under agreements to repurchase 11,939 11,939 — 11,939 — Subordinated debentures 9,896 12,372 — 12,372 — December 31, 2016 Financial Assets Cash and due from banks $ 41,281 $ 41,281 $ 41,281 $ — $ — Interest earning deposits in other financial institutions 167,789 167,789 167,789 — — Investment securities held-to-maturity 42,027 41,937 — 41,937 — Loans, net 2,030,852 2,054,701 — — 2,054,701 Bank owned life insurance 51,216 51,216 — — 51,216 FHLB Stock 9,182 9,182 — — 9,182 Financial Liabilities Certificates of deposit 29,480 29,480 — 29,480 — Securities sold under agreements to repurchase 18,816 18,816 — 18,816 — Subordinated debentures 9,856 12,372 — 12,372 —

Subsequent Events

Subsequent Events	3 Months Ended
	Mar. 31, 2017
Subsequent Events [Abstract]
Subsequent Events	Note 15 - Subsequent Events On April 5, 2017, the Company entered into an Agreement and Plan of Merger (the “Merger Agreement”) with PacWest Bancorp (“PacWest”), wherein CU Bancorp will merge with and into PacWest (the “Merger”), with PacWest surviving the Merger. Immediately following the Merger, CU Bancorp’s wholly-owned bank subsidiary, California United Bank, will merge with and into PacWest’s wholly-owned bank subsidiary, Pacific Western Bank (the “Bank Merger”). Pacific Western Bank will be the surviving bank in the Bank Merger. The Merger Agreement was approved and adopted by the Board of Directors of each of CU Bancorp and PacWest. Management of the Company has evaluated events that have occurred subsequent to March 31, 2017 and have concluded there are no subsequent events that would require recognition in the accompanying consolidated financial statements.

Basis of Financial Statement 24

Basis of Financial Statement Presentation (Policies)	3 Months Ended
	Mar. 31, 2017
Accounting Policies [Abstract]
Use of Estimates in the Preparation of Consolidated Financial Statements	Use of Estimates in the Preparation of Consolidated Financial Statements The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. In addition, these accounting principles require the disclosure of contingent assets and liabilities as of the date of the consolidated financial statements. Estimates that are particularly susceptible to significant change relate to the determination of the allowance for loan loss and various assets and liabilities measured at fair value on a recurring and nonrecurring basis. While management uses the most current available information to recognize losses on loans, future additions to the allowance for loan loss may be necessary based on, among other factors, changes in local economic conditions.
Business Segments	Business Segments The Company is organized and operates as a single reporting segment, principally engaged in commercial business banking. The Company conducts its lending and deposit operations through nine full service branch offices located in Los Angeles, Orange, Ventura and San Bernardino counties.

Computation of Book Value and25

Computation of Book Value and Tangible Book Value per Common Share (Tables)	3 Months Ended
	Mar. 31, 2017
Text Block [Abstract]
Computation of Book Value and Tangible Book Value per Common Share	The tables below present the computation of book value and tangible book value per common share as of the dates indicated (dollars in thousands, except share and per share data): March 31, 2017 December 31, Total Shareholders’ Equity $ 346,448 $ 338,185 Less: Preferred stock 16,887 16,955 Less: Goodwill 64,603 64,603 Less: Core deposit and leasehold right intangibles, net 5,970 6,300 Tangible common equity $ 258,988 $ 250,327 Common shares issued and outstanding 17,834,183 17,759,006 Book value per common share $ 18.48 $ 18.09 Tangible book value per common share $ 14.52 $ 14.10

Computation of Earnings per C26

Computation of Earnings per Common Share (Tables)	3 Months Ended
	Mar. 31, 2017
Earnings Per Share [Abstract]
Basic and Diluted Earnings Per Common Share Computations	The following table shows weighted average basic common shares outstanding, potential dilutive shares related to stock options, unvested restricted stock, and weighted average diluted shares for the periods indicated (dollars in thousands, except share and per share data): Three Months Ended March 31, 2017 2016 Net Income $ 7,783 $ 6,584 Less: Preferred stock dividends and discount accretion 301 303 Net Income available to common shareholders $ 7,482 $ 6,281 Weighted average basic common shares outstanding 17,532,104 17,041,427 Dilutive effect of potential common share issuances from stock options and restricted stock 224,351 375,733 Weighted average diluted common shares outstanding 17,756,455 17,417,160 Income per common share Basic $ 0.43 $ 0.37 Diluted $ 0.42 $ 0.36 Anti-dilutive shares not included in the calculation of diluted earnings per share 4,150 3,000

Investment Securities (Tables)

Investment Securities (Tables)	3 Months Ended
	Mar. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Amortized Cost, Gross Unrealized Gains and Losses, and Fair Values of Investment Securities	The following tables present the amortized cost, gross unrealized gains and losses, and fair values of investment securities by major category as of the dates indicated (dollars in thousands): Gross Unrealized March 31, 2017 Amortized Cost Gains Losses Fair Market Available-for-sale investment securities: U.S. Govt Agency and Sponsored Agency - Note Securities $ 10,000 $ — $ 44 $ 9,956 U.S. Govt Agency - SBA Securities 121,855 146 687 121,314 U.S. Govt Agency - GNMA Mortgage-Backed Securities 21,122 56 283 20,895 U.S. Govt Sponsored Agency - CMO & Mortgage-Backed Securities 250,344 75 3,902 246,517 Asset Backed Securities 6,913 4 142 6,775 U.S. Treasury Notes 64,089 — 147 63,942 Total available-for-sale 474,323 281 5,205 469,399 Held-to-maturity investment securities: Municipal Securities 40,945 229 15 41,159 Total held-to-maturity 40,945 229 15 41,159 0 Total investment securities $ 515,268 $ 510 $ 5,220 $ 510,558 Gross Unrealized December 31, 2016 Amortized Cost Gains Losses Fair Market Available-for-sale investment securities: U.S. Govt Agency and Sponsored Agency - Note Securities $ 10,000 $ — $ 31 $ 9,969 U.S. Govt Agency - SBA Securities 123,224 365 739 122,850 U.S. Govt Agency - GNMA Mortgage-Backed Securities 22,565 70 265 22,370 U.S. Govt Sponsored Agency - CMO & Mortgage-Backed Securities 243,159 92 4,351 238,900 Asset Backed Securities 7,111 — 215 6,896 U.S. Treasury Notes 69,101 7 143 68,965 Total available-for-sale 475,160 534 5,744 469,950 Held-to-maturity investment securities: Municipal Securities 42,027 69 159 41,937 Total held-to-maturity 42,027 69 159 41,937 Total investment securities $ 517,187 $ 603 $ 5,903 $ 511,887
Gross Unrealized Losses and Fair Values of AFS and HTM Investment Securities that were in Unrealized Loss Positions	The following tables present the gross unrealized losses and fair values of AFS and HTM investment securities that were in unrealized loss positions, summarized and classified according to the duration of the loss period as of the dates indicated (dollars in thousands). < 12 Continuous Months > 12 Continuous Months Total March 31, 2017 Fair Value Gross Fair Value Gross Fair Value Gross Available-for-sale investment securities: U.S. Govt Agency and Sponsored Agency – Note Securities $ 9,956 $ 44 $ — $ — $ 9,956 $ 44 U.S. Govt. Agency SBA Securities 58,673 422 37,546 265 96,219 687 U.S. Govt. Agency – GNMA Mortgage-Backed Securities 9,191 108 7,725 175 16,916 283 U.S. Govt. Sponsored Agency – CMO & Mortgage-Backed Securities 217,719 3,821 7,689 81 225,408 3,902 Asset Backed Securities — — 4,782 142 4,782 142 U.S Treasury Notes 63,943 147 — — 63,943 147 Total available-for-sale $ 359,482 $ 4,542 $ 57,742 $ 663 $ 417,224 $ 5,205 Held-to-maturity investment securities: Municipal Securities $ 7,162 $ 14 $ 307 $ 1 $ 7,469 $ 15 Total held-to-maturity $ 7,162 $ 14 $ 307 $ 1 $ 7,469 $ 15 < 12 Continuous Months > 12 Continuous Months Total December 31, 2016 Fair Value Gross Fair Value Gross Fair Value Gross Available-for-sale investment securities: U.S. Govt Agency and Sponsored Agency – Note Securities $ 9,969 $ 31 $ — $ — $ 9,969 $ 31 U.S. Govt Agency – SBA Securities 54,302 $ 451 39,322 288 93,624 739 U.S. Govt Agency – GNMA Mortgage-Backed Securities 6,652 98 8,264 167 14,916 265 U.S. Govt Sponsored Agency – CMO & Mortgage-Backed Securities 215,138 4,172 10,879 179 226,017 4,351 Asset Backed Securities — — 6,896 215 6,896 215 U.S. Treasury Notes 51,972 143 — — 51,972 143 Total available-for-sale $ 338,033 $ 4,895 $ 65,361 $ 849 $ 403,394 $ 5,744 Held-to-maturity investment securities: Municipal Securities $ 28,673 $ 158 $ 310 $ 1 $ 28,983 $ 159 Total held-to-maturity $ 28,673 $ 158 $ 310 $ 1 $ 28,983 $ 159
Maturities Schedule of Securities	March 31, 2017 Maturities Schedule of Securities (Dollars in thousands) Amortized Fair Value Weighted Available-for-sale investment securities: Due through one year $ 51,271 $ 51,239 0.87 % Due after one year through five years 37,098 36,794 1.02 % Due after five years through ten years 64,322 63,545 1.79 % Due after ten years 321,632 317,821 2.02 % Total available-for-sale $ 474,323 $ 469,399 1.78 % Held-to-maturity investment securities: Due through one year $ 2,148 $ 2,149 1.08 % Due after one year through five years 35,402 35,600 1.63 % Due after five years through ten years 1,924 1,921 1.88 % Due after ten years 1,471 1,489 3.36 % Total held-to-maturity $ 40,945 $ 41,159 1.68 % Total investment securities $ 515,269 $ 510,558 1.77 %

Loans (Tables)

Loans (Tables)	3 Months Ended
	Mar. 31, 2017
Receivables [Abstract]
Composition of Loan Portfolio	The following table presents the composition of the Company’s loan portfolio as of the dates indicated (dollars in thousands): March 31, 2017 Principal Net Unaccreted Net Deferred Fees Total Commercial and Industrial Loans: $ 486,646 $ (2,366 ) $ 484,280 Loans Secured by Real Estate: Owner-Occupied Nonresidential Properties 439,730 (3,461 ) 436,269 Other Nonresidential Properties 694,637 (5,622 ) 689,015 Construction, Land Development and Other Land 193,613 (1,041 ) 192,572 1-4 Family Residential Properties 119,853 (1,585 ) 118,268 Multifamily Residential Properties 95,854 (371 ) 95,483 Total Loans Secured by Real Estate 1,543,687 (12,080 ) 1,531,607 Other Loans: 30,451 (200 ) 30,251 Total Loans $ 2,060,784 $ (14,646 ) $ 2,046,138 December 31, 2016 Principal Net Unaccreted Net Deferred Fees Total Commercial and Industrial Loans: $ 505,374 $ (2,737 ) $ 502,637 Loans Secured by Real Estate: Owner-Occupied Nonresidential Properties 455,120 (3,798 ) 451,322 Other Nonresidential Properties 635,856 (5,693 ) 630,163 Construction, Land Development and Other Land 195,215 (1,156 ) 194,059 1-4 Family Residential Properties 129,261 (2,097 ) 127,164 Multifamily Residential Properties 110,336 (478 ) 109,858 Total Loans Secured by Real Estate 1,525,788 (13,222 ) 1,512,566 Other Loans: 35,246 (223 ) 35,023 Total Loans $ 2,066,408 $ (16,182 ) $ 2,050,226
Summary of Activity for Allowance for Loan Loss	The following table is a summary of the activity for the allowance for loan loss for the periods indicated (dollars in thousands): Three Months Ended March 31, 2017 2016 Allowance for loan loss at beginning of period $ 19,374 $ 15,682 Provision for loan losses — 622 Net (charge-offs) recoveries: Charge-offs — — Recoveries 231 241 Net (charge-offs) recoveries 231 241 Allowance for loan loss at end of period $ 19,605 $ 16,545 Net (charge-offs) recoveries to average loans 0.01 % 0.01 % March 31, 2017 December 31, 2016 Allowance for loan loss to total loans 0.96 % 0.94 %
Changes in Allowance for Loan Loss	The following tables present, by portfolio segment, the changes in the allowance for loan loss and the recorded investment in loans as of the dates and for the periods indicated (dollars in thousands): Commercial and Industrial Construction, Land Development and Other Land Commercial and Other Real Estate Other Total Three Months Ended March 31, 2017 Allowance for loan loss – Beginning balance $ 7,130 $ 3,084 $ 8,487 $ 673 $ 19,374 Provision for loan losses (497 ) 63 739 (305 ) — Net (charge-offs) recoveries: Charge-offs — — — — — Recoveries 229 — 2 — 231 Net (charge-offs) recoveries 229 — 2 — 231 Ending balance $ 6,862 $ 3,147 $ 9,228 $ 368 $ 19,605 Commercial and Industrial Construction, Land Development and Other Land Commercial and Other Real Estate Other Total Three Months Ended March 31, 2016 Allowance for loan loss – Beginning balance $ 5,924 $ 2,076 $ 6,821 $ 861 $ 15,682 Provision for loan losses 561 635 (448 ) (126 ) 622 Net (charge-offs) recoveries: Charge-offs — — — — — Recoveries 240 — 1 — 241 Net (charge-offs) recoveries 240 — 1 — 241 Ending balance $ 6,725 $ 2,711 $ 6,374 $ 735 $ 16,545
Allowance for Loan Loss and Associated Loan Balance Classified by Loan Portfolio Segment and by Credit Evaluation Methodology	The following tables present both the allowance for loan loss and the associated loan balance classified by loan portfolio segment and by credit evaluation methodology (dollars in thousands): Commercial Industrial Construction, Commercial and Other Real Estate Other Total March 31, 2017 Allowance for loan loss: Individually evaluated for impairment $ — $ — $ — $ — $ — Collectively evaluated for impairment 6,862 3,147 9,228 368 19,605 Purchased credit impaired (loans acquired with deteriorated credit quality) — — — — — Total Allowance for Loan Loss $ 6,862 $ 3,147 $ 9,228 $ 368 $ 19,605 Loans receivable: Individually evaluated for impairment $ 243 $ — $ 239 $ — $ 482 Collectively evaluated for impairment 483,758 192,572 1,337,572 30,251 2,044,153 Purchased credit impaired (loans acquired with deteriorated credit quality) 279 — 1,224 — 1,503 Total Loans Receivable $ 484,280 $ 192,572 $ 1,339,035 $ 30,251 $ 2,046,138 Commercial Industrial Construction, Commercial and Other Real Estate Other Total December 31, 2016 Allowance for loan loss: Individually evaluated for impairment $ — $ — $ — $ — $ — Collectively evaluated for impairment 7,130 3,084 8,487 673 19,374 Purchased credit impaired (loans acquired with deteriorated credit quality) — — — — — Total Allowance for Loan Loss $ 7,130 $ 3,084 $ 8,487 $ 673 $ 19,374 Loans receivable: Individually evaluated for impairment $ 378 $ — $ 245 $ — $ 623 Collectively evaluated for impairment 501,960 194,059 1,316,849 35,023 2,047,891 Purchased credit impaired (loans acquired with deteriorated credit quality) 299 — 1,413 — 1,712 Total Loans Receivable $ 502,637 $ 194,059 $ 1,318,507 $ 35,023 $ 2,050,226
Risk Category of Loans by Class of Loans	The following tables present the risk category of loans by class of loans based on the most recent internal loan classification as of the dates indicated (dollars in thousands): Commercial and Industrial Construction, Land Development and Other Land Commercial and Other Real Estate Other Total March 31, 2017 Pass $ 438,605 $ 192,572 $ 1,315,830 $ 30,124 $ 1,977,131 Special Mention 20,672 — 7,028 38 27,738 Substandard 25,003 — 16,177 89 41,269 Doubtful — — — — — Total $ 484,280 $ 192,572 $ 1,339,035 $ 30,251 $ 2,046,138 Commercial and Industrial Construction, Land Development and Other Land Commercial and Other Real Estate Other Total December 31, 2016 Pass $ 456,885 $ 194,059 $ 1,288,154 $ 32,128 $ 1,971,226 Special Mention 12,774 — 7,557 — 20,331 Substandard 32,978 — 22,796 2,895 58,669 Doubtful — — — — — Total $ 502,637 $ 194,059 $ 1,318,507 $ 35,023 $ 2,050,226
Aging Analysis of Recorded Investment	The following tables present an aging analysis of the recorded investment of past due loans and non-accrual loans as of the dates indicated (dollars in thousands): 31-60 Days Past Due 61-90 Days Past Due Greater 90 Days Past Due and Total Past Due and Total Non Current Total Loans March 31, 2017 Commercial and Industrial $ 86 $ — $ — $ 86 $ 521 $ 483,673 $ 484,280 Construction, Land Development and Other Land — — — — — 192,572 192,572 Commercial and Other Real Estate 209 — — 209 239 1,338,587 1,339,035 Other — — — — — 30,251 30,251 Total $ 295 $ 0 $ — $ 295 $ 760 $ 2,045,083 $ 2,046,138 31-60 Days Past Due 61-90 Days Past Due Greater 90 Days Past Due and Total Past Due and Total Non Current Total Loans December 31, 2016 Commercial and Industrial $ — $ — $ — $ — $ 675 $ 501,962 $ 502,637 Construction, Land Development and Other Land — — — — — 194,059 194,059 Commercial and Other Real Estate 212 — — 212 447 1,317,848 1,318,507 Other — — — — — 35,023 35,023 Total $ 212 $ — $ — $ 212 $ 1,122 $ 2,048,892 $ 2,050,226
Recorded Investment and Unpaid Principal Balances for Impaired Loans	The following tables present, by loan portfolio segment, the recorded investment and unpaid principal balances for impaired loans with the associated allowance amount, if applicable, for the dates and periods indicated (dollars in thousands). This table excludes purchased credit impaired loans (loans acquired in acquisitions with deteriorated credit quality) of $1.5 million and $1.7 million at March 31, 2017 and December 31, 2016, respectively. March 31, 2017 December 31, 2016 Recorded Unpaid Related Recorded Unpaid Related With no specific allowance recorded: Commercial and Industrial $ 243 $ 639 $ — $ 378 $ 1,383 $ — Commercial and Other Real Estate 239 277 — 245 282 — With an allowance recorded: Commercial and Industrial — — — — — — Total Commercial and Industrial 243 639 — 378 1,383 — Commercial and Other Real Estate 239 277 — 245 282 — Total $ 482 $ 916 $ — $ 623 $ 1,665 $ — Three Months Ended March 31, 2017 2016 Average Interest Average Interest With no specific allowance recorded: Commercial and Industrial $ 245 $ — $ 256 $ — Commercial and Other Real Estate 242 — 666 — With a specific allowance recorded: Commercial and Industrial — — — — Total: Commercial and Industrial 245 — 256 — Commercial and Other Real Estate 242 — 666 — Total $ 487 $ — $ 922 $ —
Additional Information on Impaired Loans	The following is a summary of additional information pertaining to impaired loans for the periods indicated (dollars in thousands): Three Months Ended March 31, 2017 2016 Interest foregone on impaired loans $ 13 $ 25 Cash collections applied to reduce principal balance $ 21 $ 24 Interest income recognized on cash collections $ — $ —
Recorded Investment and Unpaid Principal Balances for Troubled Debt Restructured Loans	The following tables include the recorded investment and unpaid principal balances for troubled debt restructured loans at March 31, 2017 and March 31, 2016 (dollars in thousands). These tables include TDR loans that were purchased credit impaired (“PCI”). TDR loans that are non-PCI loans are included in the Impaired Loans tables above. As of March 31, 2017, there were two PCI loans that are considered to be TDR loans with a recorded investment of $92 thousand and unpaid principal balances of $258 thousand. As of and for the Three Months Ended March 31, 2017 Recorded Unpaid Interest Income Commercial and Industrial $ 319 $ 534 $ — Total $ 319 $ 534 $ — As of and for the Three Months Ended March 31, 2016 Recorded Unpaid Interest Commercial and Industrial $ 393 $ 615 $ — Total $ 393 $ 615 $ —
Accretable Yield for Acquired Loans	The following table reflects the accretable net discount for acquired loans for the periods indicated (dollars in thousands): Three Months Ended March 31, 2017 2016 Balance, beginning of period $ 9,611 $ 14,610 Accretion, included in interest income (1,115 ) (1,133 ) Reclassifications to non-accretable yield — (7 ) Balance, end of period $ 8,496 $ 13,470
Carrying Value of Purchased Credit Impaired Loans	The following table reflects the outstanding balance and related carrying value of PCI loans as of the dates indicated (dollars in thousands): March 31, 2017 December 31, 2016 Unpaid Principal Carrying Value Unpaid Principal Carrying Value Commercial and Industrial $ 594 $ 279 $ 622 $ 299 Commercial and Other Real Estate 1,596 1,224 1,997 1,413 Total $ 2,190 $ 1,503 $ 2,619 $ 1,712
Accretable Net Discount of Purchased Credit Impaired Loans	The following table reflects the activities in the accretable net discount for PCI loans for the period indicated (dollars in thousands): Three Months Ended March 31, 2017 2016 Balance, beginning of period $ 161 $ 246 Accretion, included in interest income (23 ) (20 ) Reclassifications from non-accretable yield — — Balance, end of period $ 138 $ 226

Borrowings and Subordinated D29

Borrowings and Subordinated Debentures (Tables)	3 Months Ended
	Mar. 31, 2017
Brokers and Dealers [Abstract]
Terms and Maturity of Bank's Securities Sold under Agreements	The tables below describe the terms and maturity of the Company’s securities sold under agreements to repurchase as of the dates indicated (dollars in thousands): March 31, 2017 Date Issued Amount Interest Rate Original Maturity Date March 31, 2017 $ 11,939 0.20% – 0.25% 3 days April 3, 2017 Total $ 11,939 0.24% December 31, 2016 Date Issued Amount Interest Rate Original Maturity Date December 31, 2016 $ 18,816 0.2% – 0.25% 4 days January 4, 2017 Total $ 18,816 0.25%
Terms of Issuance Subordinated Debentures Outstanding	The following table summarizes the terms of each issuance of subordinated debentures outstanding as of the dates indicated (dollars in thousands): March 31, 2017 Series Amount (in thousands) Issuance Maturity Rate Index Current Next Reset Trust I $ 6,186 12/10/04 03/15/35 3 month LIBOR + 2.05 % 3.18 % 06/15/17 Trust II 3,093 12/23/05 03/15/36 3 month LIBOR + 1.75 % 2.88 % 06/15/17 Trust III 3,093 06/30/06 09/18/36 3 month LIBOR + 1.85 % 2.98 % 06/15/17 Subtotal 12,372 Unamortized fair value adjustment (2,476 ) Net $ 9,896 December 31, 2016 Series Amount (in thousands) Issuance Maturity Rate Index Current Next Reset Trust I $ 6,186 12/10/04 03/15/35 3 month LIBOR + 2.05 % 3.01 % 03/15/17 Trust II 3,093 12/23/05 03/15/36 3 month LIBOR + 1.75 % 2.71 % 03/15/17 Trust III 3,093 06/30/06 09/18/36 3 month LIBOR + 1.85 % 2.81 % 03/15/17 Subtotal 12,372 Unamortized fair value adjustment (2,516 ) Net $ 9,856

Derivative Financial Instrume30

Derivative Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2017
Effect of Derivative Instruments on Consolidated Statements of Income	The following table summarizes the effect of derivative financial instruments on the consolidated statements of income for the periods indicated (dollars in thousands): Three Months Ended March 31, 2017 2016 Derivatives not designated as hedging instruments: Interest rate swap contracts – loans Increase in fair value of interest rate swap contracts $ 55 $ 39 Payments on interest rate swap contracts on loans (54 ) (61 ) Net increase (decrease) in other non-interest income 1 (22 ) Derivatives designated as hedging instruments: Interest rate swap contracts – loans Increase in fair value of interest rate swap contracts $ 122 $ 23 Increase (decrease) in fair value of hedged loans (12 ) 212 Payment on interest rate swap contracts on loans (114 ) (230 ) Net increase (decrease) in interest income on loans $ (4 ) $ 5
1st Enterprise Bank
Balance Sheet Classification of Derivative Financial Instruments	The following tables present the fair values of the asset and liability of the Company’s derivative instruments acquired from 1 st Asset Derivatives March 31, 2017 December 31, 2016 Interest rate swap contracts fair value $ 421 $ 523 Balance sheet location Accrued Interest Receivable and Other Assets Accrued Interest Receivable and Other Assets Liability Derivatives March 31, 2017 December 31, 2016 Interest rate swap contracts fair value $ 421 $ 523 Balance sheet location Accrued Interest Accrued Interest
PC Bancorp
Balance Sheet Classification of Derivative Financial Instruments	The following table presents the notional amount and the fair values of the asset and liability of the Company’s derivative instruments acquired from PC Bancorp as of the dates indicated (dollars in thousands): Liability Derivatives March 31, 2017 December 31, 2016 Fair Value Hedges Total interest rate contracts notional amount $ 17,392 $ 17,642 Derivatives not designated as hedging instruments: Interest rate swap contracts fair value $ 40 $ 95 Derivatives designated as hedging instruments: Interest rate swap contracts fair value 467 589 Total interest rate contracts fair value $ 507 $ 684 Balance sheet location Accrued Accrued

Balance Sheet Offsetting (Table

Balance Sheet Offsetting (Tables)	3 Months Ended
	Mar. 31, 2017
Text Block [Abstract]
Securities Sold under Repurchase Agreements and Derivatives Securities Offset in Consolidated Financial Statements Due to an Enforceable Master Netting Arrangement	The table below presents the Company’s financial instruments that may be eligible for offsetting which include securities sold under agreements to repurchase that have no enforceable master netting arrangement and derivative securities that could be offset in the consolidated financial statements due to an enforceable master netting arrangement (dollars in thousands): Gross Gross Net Amounts in the Gross Amounts Not Offset in the Consolidated Balance Sheets Net Amount Financial Collateral March 31, 2017 Financial Assets: Interest rate swap contracts fair value (See Note 9 – Derivative Financial Instruments) $ 421 $ — $ 421 $ 421 $ — $ — Total $ 421 $ — $ 421 $ 421 $ — $ — Financial Liabilities: Interest rate swap contracts fair value (See Note 9 – Derivative Financial Instruments) $ 928 $ — $ 928 $ 928 $ 4,451 $ 3,523 Securities sold under agreements to repurchase (See Note 8 – Borrowings and Subordinated Debentures) 11,939 — 11,939 11,939 49,901 37,962 Total $ 12,867 $ — $ 12,867 $ 12,867 $ 54,352 $ 41,485 Gross Gross Net Amounts in the Gross Amounts Not Offset in the Consolidated Balance Sheets Net Amount Financial Collateral December 31, 2016 Financial Assets: Interest rate swap contracts fair value (See Note 9 – Derivative Financial Instruments) $ 523 $ — $ 523 $ 523 $ — $ — Total $ 523 $ — $ 523 $ 523 $ — $ — Financial Liabilities: Interest rate swap contracts fair value (See Note 9 – Derivative Financial Instruments) $ 1,207 $ — $ 1,207 $ 1,207 $ 4,555 $ 3,348 Securities sold under agreements to repurchase (See Note 8 – Borrowings and Subordinated Debentures) 18,816 — 18,816 18,816 48,204 29,388 Total $ 20,023 $ — $ 20,023 $ 20,023 $ 52,759 $ 32,736

Stock Options and Restricted 32

Stock Options and Restricted Stock (Tables)	3 Months Ended
	Mar. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Future Compensation Expense Related to Unvested Restricted Stock Grants	At March 31, 2017 future compensation expense related to unvested restricted stock grants are reflected in the table below (dollars in thousands): Future Restricted Stock Expense Remainder of 2017 $ 2,451 2018 1,596 2019 539 2020 171 Thereafter 22 Total $ 4,779
Share Option Activity	The following table summarizes the share option activity under the plans as of the date and for the period indicated: Shares Weighted Weighted Aggregate Outstanding stock options at December 31, 2016 47,697 $ 12.69 1.43 $ 1,102 Granted — Exercised (27,942 ) Forfeited — Expired — Outstanding stock options at March 31, 2017 19,755 $ 8.67 2.13 $ 612 Exercisable options at March 31, 2017 19,755 $ 8.67 2.13 $ 612 Unvested options at March 31, 2017 —
Restricted Stock Activity	The following table summarizes the restricted stock activity under the Equity Plan for the period indicated: Number of Shares Weighted-Average Grant-Date Fair Value Restricted Stock: Unvested at December 31, 2016 282,082 $ 21.98 Granted 65,615 38.04 Vested (30,582 ) 20.87 Forfeited (5,084 ) 21.59 Unvested at March 31, 2017 312,031 $ 25.79

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	3 Months Ended
	Mar. 31, 2017
Equity [Abstract]
Changes in Accumulated Other Comprehensive Loss	The following table presents the changes in accumulated other comprehensive loss by component for the periods indicated (dollars in thousands): Three Months Ended March 31, Consolidated Statement of Income Line Item for Reclassified Items 2017 2016 Beginning balance, net of tax $ (3,019 ) $ (816 ) Net unrealized gain arising during the period 426 1,328 Related tax effect (179 ) (559 ) Reclassification of gain on investment securities available-for-sale to net income (141 ) — Gain on sale of securities, net Related tax effect 59 — Provision for income tax expense Other Comprehensive Income 165 769 Ending balance $ (2,854 ) $ (47 )

Fair Value Information (Tables)

Fair Value Information (Tables)	3 Months Ended
	Mar. 31, 2017
Fair Value Disclosures [Abstract]
Financial Assets and Financial Liabilities Measured at Fair Value on Recurring Basis	The following table presents the financial assets and financial liabilities measured at fair value on a recurring basis as of the dates indicated, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value (dollars in thousands): Fair Value Quoted Prices Significant Significant Financial Assets – March 31, 2017 Investment securities available-for-sale: U.S. Govt Agency and Sponsored Agency – Note Securities $ 9,956 $ — $ 9,956 — U.S. Govt Agency – SBA Securities 121,314 — 121,314 — U.S. Govt Agency – GNMA Mortgage-Backed Securities 20,895 — 20,895 — U.S. Govt Sponsored Agency – CMO & Mortgage-Backed Securities 246,517 — 246,517 — Asset Backed Securities 6,775 — 6,775 — U.S. Treasury Notes 63,942 63,942 — — Interest Rate Swap Contracts 421 — 421 — $ 469,820 $ 63,942 $ 405,878 $ — Financial Liabilities – March 31, 2017 Interest Rate Swap Contracts $ 928 $ — $ 928 $ — Financial Assets – December 31, 2016 Investment securities available-for-sale: U.S. Govt Agency and Sponsored Agency – Note Securities $ 9,969 $ — $ 9,969 — U.S. Govt Agency – SBA Securities 122,850 — 122,850 — U.S. Govt Agency – GNMA Mortgage-Backed Securities 22,370 — 22,370 — U.S. Govt Sponsored Agency – CMO & Mortgage-Backed Securities 238,900 — 238,900 — Asset Backed Securities 6,896 — 6,896 — U.S. Treasury Notes 68,965 68,965 — — Interest Rate Swap Contracts 523 — 523 — $ 470,473 $ 68,965 $ 401,508 $ — Financial Liabilities – December 31, 2016 Interest Rate Swap Contracts $ 1,207 $ — $ 1,207 $ —
Balances of Assets Measured at Fair Value on Non-Recurring Basis	The following table presents the balances of assets measured at fair value on a non-recurring basis by level within the fair value hierarchy as of the dates indicated (dollars in thousands): Net Carrying Quoted Prices (Level 1) Significant (Level 2) Significant (Level 3) Financial Assets – March 31, 2017 SBA Servicing Asset $ 876 $ — $ — $ 876 Total $ 876 $ — $ — $ 876 Net Carrying Quoted Prices (Level 1) Significant (Level 2) Significant (Level 3) Financial Assets – December 31, 2016 Collateral dependent impaired loans with specific valuation allowance and/or partial charge-offs (non-purchased credit impaired loans) $ 73 $ — $ — $ 73 SBA Servicing Asset 940 — — 940 Total $ 1,013 $ — $ — $ 1,013
Significant Unobservable Inputs Used in Fair Value Measurements for Level 3 Assets Measured at Fair Value on Recurring or Non-Recurring Basis	The following table presents the significant unobservable inputs used in the fair value measurements for Level 3 assets measured at fair value on a non-recurring basis as of the dates indicated (dollars in thousands): Fair Value Valuation Methodology Unobservable Valuation Inputs Unobservable Input Values Financial Assets – March 31, 2017 Discount Rates 13% SBA Servicing Asset $ 876 Discounted Cash Flow Estimated Average Remaining Life of SBA Portfolio 39 months Total $ 876 Fair Value Valuation Methodology Unobservable Valuation Inputs Unobservable Input Values Financial Assets – December 31, 2016 Collateral dependent impaired loans with specific valuation allowance and/or partial charge-off $ 73 Credit loss estimate of aged accounts receivable collateral Credit loss factors on aging of accounts receivable collateral 20% Discount Rates 13% SBA Servicing Asset 940 Discounted Cash Flow Estimated Average Remaining Life of SBA Portfolio 39 months Total $ 1,013
Level in Fair Value Hierarchy for Financial Instruments Estimated Fair Values	The table below presents the carrying amounts and fair values of certain financial instruments based on their fair value hierarchy indicated (dollars in thousands): Fair Value Measurements Carrying Estimated Fair Quoted Prices Significant Significant March 31, 2017 Financial Assets Cash and due from banks $ 51,168 $ 51,168 $ 51,168 $ — $ — Interest earning deposits in other financial institutions 313,609 313,609 313,609 — — Investment securities held-to-maturity 40,945 41,159 — 41,159 — Loans, net 2,026,533 2,044,209 — — 2,044,209 Bank owned life insurance 63,595 63,595 — — 63,595 FHLB Stock 9,182 9,182 — — 9,182 Financial Liabilities Certificates of deposit 30,623 30,625 — 30,625 — Securities sold under agreements to repurchase 11,939 11,939 — 11,939 — Subordinated debentures 9,896 12,372 — 12,372 — December 31, 2016 Financial Assets Cash and due from banks $ 41,281 $ 41,281 $ 41,281 $ — $ — Interest earning deposits in other financial institutions 167,789 167,789 167,789 — — Investment securities held-to-maturity 42,027 41,937 — 41,937 — Loans, net 2,030,852 2,054,701 — — 2,054,701 Bank owned life insurance 51,216 51,216 — — 51,216 FHLB Stock 9,182 9,182 — — 9,182 Financial Liabilities Certificates of deposit 29,480 29,480 — 29,480 — Securities sold under agreements to repurchase 18,816 18,816 — 18,816 — Subordinated debentures 9,856 12,372 — 12,372 —

Basis of Financial Statement 35

Basis of Financial Statement Presentation - Additional Information (Detail)	Mar. 31, 2017Office
Accounting Policies [Abstract]
Full service branch offices	9

Recent Accounting Pronounceme36

Recent Accounting Pronouncements - Additional Information (Detail) $ in Millions	1 Months Ended	3 Months Ended
	Feb. 29, 2016	Mar. 31, 2017USD ($)LeasesLocation
Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Short tem lease, Term of contract	12 months
ASU 2016-02, Leases
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of operating leases | Leases		10
Operating leases by location | Location		10
Operating leases term of contract		12 months
Operating lease future payments | $		$ 11

Computation of Book Value and37

Computation of Book Value and Tangible Book Value per Common Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016	Dec. 31, 2015
Equity [Abstract]
Total Shareholders' Equity	$ 346,448	$ 338,185	$ 315,988	$ 306,807
Less: Preferred stock	16,887	16,995
Less: Goodwill	64,603	64,603
Less: Core deposit and leasehold right intangibles, net	5,970	6,300
Tangible common equity	$ 258,988	$ 250,327
Common shares issued	17,834,183	17,759,006
Common shares outstanding	17,834,183	17,759,006
Book value per common share	$ 18.48	$ 18.09
Tangible book value per common share	$ 14.52	$ 14.10

Basic and Diluted Earnings Per

Basic and Diluted Earnings Per Common Share Computations (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Earnings Per Share [Abstract]
Net Income	$ 7,783	$ 6,584
Less: Preferred stock dividends and discount accretion	301	303
Net Income available to common shareholders	$ 7,482	$ 6,281
Weighted average basic common shares outstanding	17,532,104	17,041,427
Dilutive effect of potential common share issuances from stock options and restricted stock	224,351	375,733
Weighted average diluted common shares outstanding	17,756,455	17,417,160
Basic income (loss) per share	$ 0.43	$ 0.37
Diluted income (loss) per share	$ 0.42	$ 0.36
Anti-dilutive shares not included in the calculation of diluted earnings per share	4,150	3,000

Amortized Cost, Gross Unrealize

Amortized Cost, Gross Unrealized Gains and Losses, and Fair Values of Investment Securities (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Investment Securities, Amortized Cost	$ 474,323	$ 475,160
Available-for-sale Investment Securities, Gross Unrealized Gains	281	534
Available-for-sale Investment Securities, Gross Unrealized Losses	5,205	5,744
Fair Market Value	469,399	469,950
Held-to-maturity Investment Securities, Amortized Cost	40,945	42,027
Held-to-maturity Investment Securities, Gross Unrealized Gain	229	69
Held-to-maturity Investment Securities, Gross Unrealized Losses	15	159
Fair Market Value	41,159	41,937
Available-for-sale Investment Securities and Held-to-maturity Investment Securities, Amortized Cost	515,268	517,187
Available-for-sale Investment Securities and Held-to-maturity Investment Securities, Gross Unrealized Gain	510	603
Available-for-sale Investment Securities and Held-to-maturity Investment Securities, Gross Unrealized Losses	5,220	5,903
Available-for-sale Investment Securities and Held-to-maturity Investment Securities, Fair Market Value	510,558	511,887
U.S. Govt Agency and Sponsored Agency - Note Securities
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Investment Securities, Amortized Cost	10,000	10,000
Available-for-sale Investment Securities, Gross Unrealized Losses	44	31
Fair Market Value	9,956	9,969
U.S. Govt Agency - SBA Securities
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Investment Securities, Amortized Cost	121,855	123,224
Available-for-sale Investment Securities, Gross Unrealized Gains	146	365
Available-for-sale Investment Securities, Gross Unrealized Losses	687	739
Fair Market Value	121,314	122,850
U.S. Govt Agency - GNMA Mortgage-Backed Securities
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Investment Securities, Amortized Cost	21,122	22,565
Available-for-sale Investment Securities, Gross Unrealized Gains	56	70
Available-for-sale Investment Securities, Gross Unrealized Losses	283	265
Fair Market Value	20,895	22,370
U.S. Govt Sponsored Agency - CMO & Mortgage-Backed Securities
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Investment Securities, Amortized Cost	250,344	243,159
Available-for-sale Investment Securities, Gross Unrealized Gains	75	92
Available-for-sale Investment Securities, Gross Unrealized Losses	3,902	4,351
Fair Market Value	246,517	238,900
Municipal Securities
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Held-to-maturity Investment Securities, Amortized Cost	40,945	42,027
Held-to-maturity Investment Securities, Gross Unrealized Gain	229	69
Held-to-maturity Investment Securities, Gross Unrealized Losses	15	159
Fair Market Value	41,159	41,937
Asset Backed Securities
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Investment Securities, Amortized Cost	6,913	7,111
Available-for-sale Investment Securities, Gross Unrealized Gains	4
Available-for-sale Investment Securities, Gross Unrealized Losses	142	215
Fair Market Value	6,775	6,896
U. S. Treasury Notes
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Investment Securities, Amortized Cost	64,089	69,101
Available-for-sale Investment Securities, Gross Unrealized Gains		7
Available-for-sale Investment Securities, Gross Unrealized Losses	147	143
Fair Market Value	$ 63,942	$ 68,965

Investment Securities - Additio

Investment Securities - Additional Information (Detail) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Schedule of Trading Securities and Other Trading Assets [Line Items]
Other-than-temporary impairment losses	$ 0	$ 0
Company's investment in the common stock of the FHLB	9,100,000	9,100,000
Securities sold under agreements to repurchase
Schedule of Trading Securities and Other Trading Assets [Line Items]
Market value of securities pledged to secure securities sold under agreements to repurchase	219,000,000	$ 205,000,000
Accrued Interest Receivable and Other Assets | Federal Home Loan Bank of San Francisco
Schedule of Trading Securities and Other Trading Assets [Line Items]
FHLB stock impairment losses	$ 0

Gross Unrealized Losses and Fai

Gross Unrealized Losses and Fair Values of AFS and HTM Investment Securities that were in Unrealized Loss Positions (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]
Temporarily-impaired available-for-sale investment securities, Less than 12 Continuous Months, Fair Value	$ 359,482	$ 338,033
Temporarily-impaired available-for-sale investment securities, Less than 12 Continuous Months, Gross Unrealized Loss	4,542	4,895
Temporarily-impaired available-for-sale investment securities, More than 12 Continuous Months, Fair Value	57,742	65,361
Temporarily-impaired available-for-sale investment securities, More than 12 Continuous Months, Gross Unrealized Loss	663	849
Temporarily-impaired available-for-sale investment securities, Total, Fair Value	417,224	403,394
Temporarily-impaired available-for-sale investment securities, Total, Gross Unrealized Loss	5,205	5,744
Temporarily-impaired held-to-maturity investment securities, Less than 12 months, Fair Value	7,162	28,673
Temporarily-impaired held-to-maturity investment securities, Less than 12 months, Gross Unrealized Loss	14	158
Temporarily-impaired held-to-maturity investment securities, More than 12 months, Fair Value	307	310
Temporarily-impaired held-to-maturity investment securities, More than 12 months, Gross Unrealized Loss	1	1
Temporarily-impaired held-to-maturity investment securities, Fair Value	7,469	28,983
Temporarily-impaired held-to-maturity investment securities, Gross Unrealized Loss	15	159
U.S. Govt Agency and Sponsored Agency - Note Securities
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]
Temporarily-impaired available-for-sale investment securities, Less than 12 Continuous Months, Fair Value	9,956	9,969
Temporarily-impaired available-for-sale investment securities, Less than 12 Continuous Months, Gross Unrealized Loss	44	31
Temporarily-impaired available-for-sale investment securities, Total, Fair Value	9,956	9,969
Temporarily-impaired available-for-sale investment securities, Total, Gross Unrealized Loss	44	31
U.S. Govt Agency - SBA Securities
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]
Temporarily-impaired available-for-sale investment securities, Less than 12 Continuous Months, Fair Value	58,673	54,302
Temporarily-impaired available-for-sale investment securities, Less than 12 Continuous Months, Gross Unrealized Loss	422	451
Temporarily-impaired available-for-sale investment securities, More than 12 Continuous Months, Fair Value	37,546	39,322
Temporarily-impaired available-for-sale investment securities, More than 12 Continuous Months, Gross Unrealized Loss	265	288
Temporarily-impaired available-for-sale investment securities, Total, Fair Value	96,219	93,624
Temporarily-impaired available-for-sale investment securities, Total, Gross Unrealized Loss	687	739
U.S. Govt Agency - GNMA Mortgage-Backed Securities
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]
Temporarily-impaired available-for-sale investment securities, Less than 12 Continuous Months, Fair Value	9,191	6,652
Temporarily-impaired available-for-sale investment securities, Less than 12 Continuous Months, Gross Unrealized Loss	108	98
Temporarily-impaired available-for-sale investment securities, More than 12 Continuous Months, Fair Value	7,725	8,264
Temporarily-impaired available-for-sale investment securities, More than 12 Continuous Months, Gross Unrealized Loss	175	167
Temporarily-impaired available-for-sale investment securities, Total, Fair Value	16,916	14,916
Temporarily-impaired available-for-sale investment securities, Total, Gross Unrealized Loss	283	265
U.S. Govt Sponsored Agency - CMO & Mortgage-Backed Securities
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]
Temporarily-impaired available-for-sale investment securities, Less than 12 Continuous Months, Fair Value	217,719	215,138
Temporarily-impaired available-for-sale investment securities, Less than 12 Continuous Months, Gross Unrealized Loss	3,821	4,172
Temporarily-impaired available-for-sale investment securities, More than 12 Continuous Months, Fair Value	7,689	10,879
Temporarily-impaired available-for-sale investment securities, More than 12 Continuous Months, Gross Unrealized Loss	81	179
Temporarily-impaired available-for-sale investment securities, Total, Fair Value	225,408	226,017
Temporarily-impaired available-for-sale investment securities, Total, Gross Unrealized Loss	3,902	4,351
Asset Backed Securities
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]
Temporarily-impaired available-for-sale investment securities, More than 12 Continuous Months, Fair Value	4,782	6,896
Temporarily-impaired available-for-sale investment securities, More than 12 Continuous Months, Gross Unrealized Loss	142	215
Temporarily-impaired available-for-sale investment securities, Total, Fair Value	4,782	6,896
Temporarily-impaired available-for-sale investment securities, Total, Gross Unrealized Loss	142	215
U. S. Treasury Notes
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]
Temporarily-impaired available-for-sale investment securities, Less than 12 Continuous Months, Fair Value	63,943	51,972
Temporarily-impaired available-for-sale investment securities, Less than 12 Continuous Months, Gross Unrealized Loss	147	143
Temporarily-impaired available-for-sale investment securities, Total, Fair Value	63,943	51,972
Temporarily-impaired available-for-sale investment securities, Total, Gross Unrealized Loss	147	143
Municipal Securities
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]
Temporarily-impaired held-to-maturity investment securities, Less than 12 months, Fair Value	7,162	28,673
Temporarily-impaired held-to-maturity investment securities, Less than 12 months, Gross Unrealized Loss	14	158
Temporarily-impaired held-to-maturity investment securities, More than 12 months, Fair Value	307	310
Temporarily-impaired held-to-maturity investment securities, More than 12 months, Gross Unrealized Loss	1	1
Temporarily-impaired held-to-maturity investment securities, Fair Value	7,469	28,983
Temporarily-impaired held-to-maturity investment securities, Gross Unrealized Loss	$ 15	$ 159

Maturities Schedule of Securiti

Maturities Schedule of Securities (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Available-for-sale investment securities, Amortized Cost
Due through one year	$ 51,271
Due after one year through five years	37,098
Due after five years through ten years	64,322
Due after ten years	321,632
Available-for-sale Investment Securities, Amortized Cost	474,323	$ 475,160
Held-to-maturity investment securities, Amortized Cost
Due through one year	2,148
Due after one year through five years	35,402
Due after five years through ten years	1,924
Due after ten years	1,471
Held-to-maturity Investment Securities, Amortized Cost	40,945	42,027
Available-for-sale Investment Securities and Held-to-maturity Investment Securities, Amortized Cost	515,268	517,187
Available-for-sale investment securities, Fair Value
Due through one year	51,239
Due after one year through five years	36,794
Due after five years through ten years	63,545
Due after ten years	317,821
Total available-for-sale	469,399	469,950
Held-to-maturity investment securities, Fair Value
Due through one year	2,149
Due after one year through five years	35,600
Due after five years through ten years	1,921
Due after ten years	1,489
Total held-to-maturity	41,159	41,937
Total investment securities	$ 510,558	$ 511,887
Available-for-sale investment securities, Weighted Average Yield
Due through one year	0.87%
Due after one year through five years	1.02%
Due after five years through ten years	1.79%
Due after ten years	2.02%
Total available-for-sale	1.78%
Held-to-maturity investment securities, Weighted Average Yield
Due through one year	1.08%
Due after one year through five years	1.63%
Due after five years through ten years	1.88%
Due after ten years	3.36%
Total held-to-maturity	1.68%
Total investment securities	1.77%

Composition of Loan Portfolio (

Composition of Loan Portfolio (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Principal	$ 2,060,784	$ 2,066,408
Net Unaccreted Discounts, Net Deferred Fees	(14,646)	(16,182)
Total Loans	2,046,138	2,050,226
Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Principal	486,646	505,374
Net Unaccreted Discounts, Net Deferred Fees	(2,366)	(2,737)
Total Loans	484,280	502,637
Commercial and Other Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	1,339,035	1,318,507
Construction, Land Development and Other Land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	192,572	194,059
Other Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Principal	30,451	35,246
Net Unaccreted Discounts, Net Deferred Fees	(200)	(223)
Total Loans	30,251	35,023
Loans Secured by Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Principal	1,543,687	1,525,788
Net Unaccreted Discounts, Net Deferred Fees	(12,080)	(13,222)
Total Loans	1,531,607	1,512,566
Loans Secured by Real Estate | Construction, Land Development and Other Land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Principal	193,613	195,215
Net Unaccreted Discounts, Net Deferred Fees	(1,041)	(1,156)
Total Loans	192,572	194,059
Owner-Occupied Nonresidential Properties | Loans Secured by Real Estate | Commercial and Other Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Principal	439,730	455,120
Net Unaccreted Discounts, Net Deferred Fees	(3,461)	(3,798)
Total Loans	436,269	451,322
Other Nonresidential Properties | Loans Secured by Real Estate | Commercial and Other Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Principal	694,637	635,856
Net Unaccreted Discounts, Net Deferred Fees	(5,622)	(5,693)
Total Loans	689,015	630,163
1-4 Family Residential Properties | Loans Secured by Real Estate | Commercial and Other Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Principal	119,853	129,261
Net Unaccreted Discounts, Net Deferred Fees	(1,585)	(2,097)
Total Loans	118,268	127,164
Multifamily Residential Properties | Loans Secured by Real Estate | Commercial and Other Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Principal	95,854	110,336
Net Unaccreted Discounts, Net Deferred Fees	(371)	(478)
Total Loans	$ 95,483	$ 109,858

Loans - Additional Information

Loans - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2017USD ($)Loan	Mar. 31, 2016USD ($)Loan	Dec. 31, 2016USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for sale	$ 0
Credit purchase impaired loan	482,000		$ 623,000
Recorded Investment	319,000	$ 393,000
Unpaid Principal Balance	$ 534,000	$ 615,000
Defaulted restructured loans | Loan	0	0
Payment defaults subsequent to modification on troubled debt restructured loans	$ 0	$ 0
Commitment to lend borrowers	0
SBA Servicing Asset
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net	102,000,000
Loan balances sold	73,000,000
SBA 7a Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net	421,000
Debt Instrument Remaining Loans | SBA Servicing Asset
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net	29,000,000
Debt Instrument Guaranteed Loans | SBA Servicing Asset
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net	5,000,000
Debt Instrument Guaranteed Loans | SBA 7a Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net	316,000
PCI Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Credit purchase impaired loan	1,503,000		$ 1,712,000
Recorded Investment	92,000
Unpaid Principal Balance	$ 258,000
Number of Loans | Loan	2

Summary of Activity for Allowan

Summary of Activity for Allowance for Loan Loss (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Receivables [Abstract]
Allowance for loan loss at beginning of period	$ 19,374	$ 15,682
Provision for loan losses		622
Net (charge-offs) recoveries:
Charge-offs	0	0
Recoveries	231	241
Net (charge-offs) recoveries	231	241
Allowance for loan loss at end of period	$ 19,605	$ 16,545
Net (charge-offs) recoveries to average loans	0.01%	0.01%
Allowance for loan loss to total loans	0.96%	0.94%

Changes in Allowance for Loan L

Changes in Allowance for Loan Loss (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan loss at beginning of period	$ 19,374	$ 15,682
Provision for loan losses		622
Net (charge-offs) recoveries:
Charge-offs	0	0
Recoveries	231	241
Net (charge-offs) recoveries	231	241
Allowance for loan loss at end of period	19,605	16,545
Commercial and Industrial
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan loss at beginning of period	7,130	5,924
Provision for loan losses	(497)	561
Net (charge-offs) recoveries:
Charge-offs	0	0
Recoveries	229	240
Net (charge-offs) recoveries	229	240
Allowance for loan loss at end of period	6,862	6,725
Construction, Land Development and Other Land
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan loss at beginning of period	3,084	2,076
Provision for loan losses	63	635
Net (charge-offs) recoveries:
Charge-offs	0	0
Allowance for loan loss at end of period	3,147	2,711
Commercial and Other Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan loss at beginning of period	8,487	6,821
Provision for loan losses	739	(448)
Net (charge-offs) recoveries:
Charge-offs	0	0
Recoveries	2	1
Net (charge-offs) recoveries	2	1
Allowance for loan loss at end of period	9,228	6,374
Other Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan loss at beginning of period	673	861
Provision for loan losses	(305)	(126)
Net (charge-offs) recoveries:
Charge-offs	0	0
Allowance for loan loss at end of period	$ 368	$ 735

Allowance for Loan Loss and Ass

Allowance for Loan Loss and Associated Loan Balance Classified by Loan Portfolio Segment and by Credit Evaluation Methodology (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016	Dec. 31, 2015
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment	$ 0	$ 0
Collectively evaluated for impairment	19,605	19,374
Total Allowance for Loan Loss	19,605	19,374	$ 16,545	$ 15,682
Loans receivable:
Individually evaluated for impairment	482	623
Collectively evaluated for impairment	2,044,153	2,047,891
Total Loans	2,046,138	2,050,226
PCI Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Purchased credit impaired (loans acquired with deteriorated credit quality)	0	0
Loans receivable:
Purchased credit impaired (loans acquired with deteriorated credit quality)	1,503	1,712
Commercial and Industrial
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	6,862	7,130
Total Allowance for Loan Loss	6,862	7,130	6,725	5,924
Loans receivable:
Individually evaluated for impairment	243	378
Collectively evaluated for impairment	483,758	501,960
Total Loans	484,280	502,637
Commercial and Industrial | PCI Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Purchased credit impaired (loans acquired with deteriorated credit quality)	0	0
Loans receivable:
Purchased credit impaired (loans acquired with deteriorated credit quality)	279	299
Construction, Land Development and Other Land
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	3,147	3,084
Total Allowance for Loan Loss	3,147	3,084	2,711	2,076
Loans receivable:
Collectively evaluated for impairment	192,572	194,059
Total Loans	192,572	194,059
Construction, Land Development and Other Land | PCI Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Purchased credit impaired (loans acquired with deteriorated credit quality)	0	0
Commercial and Other Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	9,228	8,487
Total Allowance for Loan Loss	9,228	8,487	6,374	6,821
Loans receivable:
Individually evaluated for impairment	239	245
Collectively evaluated for impairment	1,337,572	1,316,849
Total Loans	1,339,035	1,318,507
Commercial and Other Real Estate | PCI Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Purchased credit impaired (loans acquired with deteriorated credit quality)	0	0
Loans receivable:
Purchased credit impaired (loans acquired with deteriorated credit quality)	1,224	1,413
Other Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	368	673
Total Allowance for Loan Loss	368	673	$ 735	$ 861
Loans receivable:
Collectively evaluated for impairment	30,251	35,023
Total Loans	30,251	35,023
Other Loans | PCI Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Purchased credit impaired (loans acquired with deteriorated credit quality)	$ 0	$ 0

Risk Category of Loans by Class

Risk Category of Loans by Class of Loans (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 2,046,138	$ 2,050,226
Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	484,280	502,637
Construction, Land Development and Other Land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	192,572	194,059
Commercial and Other Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,339,035	1,318,507
Other Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	30,251	35,023
Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,977,131	1,971,226
Pass | Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	438,605	456,885
Pass | Construction, Land Development and Other Land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	192,572	194,059
Pass | Commercial and Other Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,315,830	1,288,154
Pass | Other Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	30,124	32,128
Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	27,738	20,331
Special Mention | Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	20,672	12,774
Special Mention | Commercial and Other Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	7,028	7,557
Special Mention | Other Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	38
Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	41,269	58,669
Substandard | Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	25,003	32,978
Substandard | Commercial and Other Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	16,177	22,796
Substandard | Other Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 89	$ 2,895

Aging Analysis of Recorded Inve

Aging Analysis of Recorded Investment (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Accruing	$ 295	$ 212
Total Non-Accrual	760	1,122
Current	2,045,083	2,048,892
Total Loans	2,046,138	2,050,226
Commercial and Industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Accruing	86
Total Non-Accrual	521	675
Current	483,673	501,962
Total Loans	484,280	502,637
Construction, Land Development and Other Land
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	192,572	194,059
Total Loans	192,572	194,059
Commercial and Other Real Estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Accruing	209	212
Total Non-Accrual	239	447
Current	1,338,587	1,317,848
Total Loans	1,339,035	1,318,507
Other Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	30,251	35,023
Total Loans	30,251	35,023
Loans 31 to 60 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Accruing	295	212
Loans 31 to 60 Days Past Due | Commercial and Industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Accruing	86
Loans 31 to 60 Days Past Due | Commercial and Other Real Estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Accruing	209	$ 212
Loans 61 to 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Accruing	$ 0

Recorded Investment and Unpaid

Recorded Investment and Unpaid Principal Balances for Impaired Loans (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Financing Receivable, Impaired [Line Items]
Recorded Investment	$ 482		$ 623
Unpaid Principal Balance	916		1,665
Related Allowance, With a specific allowance recorded	0		0
Related Allowance, With a specific allowance recorded	0		0
Related Allowance, With a specific allowance recorded	0		0
Average Recorded Investment	487	$ 922
Interest Income Recognized	0	0
Commercial and Industrial
Financing Receivable, Impaired [Line Items]
Recorded Investment, With no specific allowance recorded	243		378
Recorded Investment, With a specific allowance recorded	0		0
Recorded Investment	243		378
Unpaid Principal Balance, With no specific allowance recorded	639		1,383
Unpaid Principal Balance, With a specific allowance recorded	0		0
Unpaid Principal Balance	639		1,383
Related Allowance, With a specific allowance recorded	0		0
Related Allowance, With a specific allowance recorded	0		0
Related Allowance, With a specific allowance recorded	0		0
Average Recorded Investment, With no specific allowance recorded	245	256
Average Recorded Investment, With a specific allowance recorded	0	0
Average Recorded Investment	245	256
Interest Income Recognized, With no specific allowance recorded	0	0
Interest Income Recognized, With a specific allowance recorded	0	0
Interest Income Recognized	0	0
Commercial and Other Real Estate
Financing Receivable, Impaired [Line Items]
Recorded Investment, With no specific allowance recorded	239		245
Recorded Investment	239		245
Unpaid Principal Balance, With no specific allowance recorded	277		282
Unpaid Principal Balance	277		282
Related Allowance, With a specific allowance recorded	0		0
Related Allowance, With a specific allowance recorded	0		0
Related Allowance, With a specific allowance recorded	0		$ 0
Average Recorded Investment, With no specific allowance recorded	242	666
Average Recorded Investment	242	666
Interest Income Recognized, With no specific allowance recorded	0	0
Interest Income Recognized	$ 0	$ 0

Additional Information on Impai

Additional Information on Impaired Loans (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Receivables [Abstract]
Interest foregone on impaired loans	$ 13	$ 25
Cash collections applied to reduce principal balance	21	24
Interest income recognized on cash collections	$ 0	$ 0

Recorded Investment and Unpai52

Recorded Investment and Unpaid Principal Balances for Troubled Debt Restructured Loans (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Financing Receivable, Modifications [Line Items]
Recorded Investment	$ 319	$ 393
Unpaid Principal Balance	534	615
Interest Income Recognized	0	0
Commercial and Industrial
Financing Receivable, Modifications [Line Items]
Recorded Investment	319	393
Unpaid Principal Balance	534	615
Interest Income Recognized	$ 0	$ 0

Accretable Yield for Acquired L

Accretable Yield for Acquired Loans (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Receivables [Abstract]
Balance, beginning of period	$ 9,611	$ 14,610
Accretion, included in interest income	(1,115)	(1,133)
Reclassifications to non-accretable yield		(7)
Balance, end of period	$ 8,496	$ 13,470

Carrying Value of Purchased Cre

Carrying Value of Purchased Credit Impaired Loans (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	$ 916	$ 1,665
Carrying Value	482	623
Commercial and Industrial
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	639	1,383
Carrying Value	243	378
Commercial and Other Real Estate
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	277	282
Carrying Value	239	245
PCI Loans
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	2,190	2,619
Carrying Value	1,503	1,712
PCI Loans | Commercial and Industrial
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	594	622
Carrying Value	279	299
PCI Loans | Commercial and Other Real Estate
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	1,596	1,997
Carrying Value	$ 1,224	$ 1,413

Accretable Net Discount of Purc

Accretable Net Discount of Purchased Credit Impaired Loans (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Acquired Impaired Loans Change In Accretable Yield [Line Items]
Balance, beginning of period	$ 9,611	$ 14,610
Accretion, included in interest income	(1,115)	(1,133)
Balance, end of period	8,496	13,470
PCI Loans
Acquired Impaired Loans Change In Accretable Yield [Line Items]
Balance, beginning of period	161	246
Accretion, included in interest income	(23)	(20)
Reclassifications from non-accretable yield	0	0
Balance, end of period	$ 138	$ 226

Qualified Affordable Housing 56

Qualified Affordable Housing Project Investments - Additional Information (Detail) - Low Income Housing Tax Credits - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Investment Holdings [Line Items]
Investment cost	$ 6,100		$ 6,200
Investment in funding obligation	3,400		$ 3,400
Tax credits and other tax benefits	560	$ 573
Amortization expense	$ 439	$ 448

Borrowings and Subordinated D57

Borrowings and Subordinated Debentures - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2017USD ($)Debentures	Dec. 31, 2016USD ($)
Debt Instrument [Line Items]
Securities with a fair value	$ 50,000,000	$ 48,000,000
Issuance maturity period from its date of issue	30 years
PC Bancorp
Debt Instrument [Line Items]
Subordinated debentures	$ 12,400,000
Subordinated Debentures
Debt Instrument [Line Items]
Number of debentures | Debentures	3
Subordinate debentures, interest payment terms	The Company has the right, assuming no default has occurred, to defer payments of interest on the subordinated debentures at any time for a period not to exceed 20 consecutive quarters.
Federal Home Loan Bank of San Francisco
Debt Instrument [Line Items]
Credit facility, percentage of Bank's total assets		25.00%
Credit facility, maximum borrowing capacity		$ 749,000,000
Credit facility, loan collateral pledge	$ 1,000,000,000
Maximum advances by FHLB	688,000,000
Investment securities pledged with FHLB	16,000,000
Outstanding advances (borrowings) with FHLB	0	$ 0
Trust I | Subordinated Debentures
Debt Instrument [Line Items]
Prepayment penalties	0
Trust II | Subordinated Debentures
Debt Instrument [Line Items]
Prepayment penalties	0
Trust III | Subordinated Debentures
Debt Instrument [Line Items]
Prepayment penalties	$ 0
Minimum
Debt Instrument [Line Items]
Repurchase maturity date	1 day
Maximum
Debt Instrument [Line Items]
Repurchase maturity date	180 days
Additional Borrowing Capacity [Member] | Federal Home Loan Bank of San Francisco
Debt Instrument [Line Items]
Maximum advances by FHLB	$ 14,000,000

Terms and Maturity of Bank's Se

Terms and Maturity of Bank's Securities Sold under Agreements (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Financial Instruments Owned and Pledged as Collateral [Line Items]
Amount	$ 11,939	$ 18,816
Interest Rate	0.24%	0.25%
March 31, 2017
Financial Instruments Owned and Pledged as Collateral [Line Items]
Amount	$ 11,939
Term	3 days
Maturity Date	Apr. 3, 2017
March 31, 2017 | Minimum
Financial Instruments Owned and Pledged as Collateral [Line Items]
Interest Rate	0.20%
March 31, 2017 | Maximum
Financial Instruments Owned and Pledged as Collateral [Line Items]
Interest Rate	0.25%
December 31, 2016
Financial Instruments Owned and Pledged as Collateral [Line Items]
Amount		$ 18,816
December 31, 2016 | Minimum
Financial Instruments Owned and Pledged as Collateral [Line Items]
Interest Rate		0.20%
Term		4 days
Maturity Date		Jan. 4, 2017
December 31, 2016 | Maximum
Financial Instruments Owned and Pledged as Collateral [Line Items]
Interest Rate		0.25%

Subordinated Debentures Outstan

Subordinated Debentures Outstanding (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Financial Instruments Owned and Pledged as Collateral [Line Items]
Amount, gross	$ 12,372	$ 12,372
Unamortized fair value adjustment	(2,476)	(2,516)
Net	9,896	9,856
Trust I
Financial Instruments Owned and Pledged as Collateral [Line Items]
Amount, gross	$ 6,186	$ 6,186
Issuance Date	Dec. 10, 2004	Dec. 10, 2004
Maturity Date	Mar. 15, 2035	Mar. 15, 2035
Rate Index	3 month LIBOR + 2.05%	3 month LIBOR + 2.05%
Current Rate	3.18%	3.01%
Next Reset Date	Jun. 15, 2017	Mar. 15, 2017
Trust II
Financial Instruments Owned and Pledged as Collateral [Line Items]
Amount, gross	$ 3,093	$ 3,093
Issuance Date	Dec. 23, 2005	Dec. 23, 2005
Maturity Date	Mar. 15, 2036	Mar. 15, 2036
Rate Index	3 month LIBOR + 1.75%	3 month LIBOR + 1.75%
Current Rate	2.88%	2.71%
Next Reset Date	Jun. 15, 2017	Mar. 15, 2017
Trust III
Financial Instruments Owned and Pledged as Collateral [Line Items]
Amount, gross	$ 3,093	$ 3,093
Issuance Date	Jun. 30, 2006	Jun. 30, 2006
Maturity Date	Sep. 18, 2036	Sep. 18, 2036
Rate Index	3 month LIBOR + 1.85%	3 month LIBOR + 1.85%
Current Rate	2.98%	2.81%
Next Reset Date	Jun. 15, 2017	Mar. 15, 2017

Derivative Financial Instrume60

Derivative Financial Instruments - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2017USD ($)AgreementDerivativeFinancial_Institution	Dec. 31, 2016USD ($)
Interest rate swap contracts fair value
Derivative [Line Items]
Required collateral	$ 4,400,000
Investment Securities | Interest rate swap contracts fair value
Derivative [Line Items]
Required collateral	1,700,000
Certificates of Deposits Pledged as Collateral | Interest rate swap contracts fair value
Derivative [Line Items]
Required collateral	$ 2,700,000
1st Enterprise Bank
Derivative [Line Items]
Number of counterparty banks | Financial_Institution	2
Derivative assets liabilities offset	$ 0
Total notional amount of swaps	$ 21,000,000	$ 24,000,000
1st Enterprise Bank | Maximum
Derivative [Line Items]
Outstanding swaps remaining maturity period	5 years
Derivatives not Designated as Hedging Instruments | 1st Enterprise Bank | Interest rate swap contracts fair value
Derivative [Line Items]
Swap contracts acquired | Derivative	11
Offsetting interest-rate swaps acquired | Derivative	11
Derivatives Designated as Hedging Instruments | PC Bancorp
Derivative [Line Items]
Number of pay-fixed, receive-variable interest rate swap agreements | Agreement	14

Balance Sheet Classification of

Balance Sheet Classification of Derivative Financial Instruments (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Derivative [Line Items]
Asset Derivatives	$ 421	$ 523
Liability Derivatives	928	1,207
1st Enterprise Bank | Accrued Interest Payable and Other Liabilities | Interest rate swap contracts fair value
Derivative [Line Items]
Liability Derivatives	421	523
1st Enterprise Bank | Accrued Interest Receivable and Other Assets | Interest rate swap contracts fair value
Derivative [Line Items]
Asset Derivatives	421	523
PC Bancorp | Accrued Interest Payable and Other Liabilities
Derivative [Line Items]
Liability Derivatives	507	684
PC Bancorp | Accrued Interest Payable and Other Liabilities | Interest Rate Contracts
Derivative [Line Items]
Liability Derivatives	17,392	17,642
Derivatives not Designated as Hedging Instruments | PC Bancorp | Accrued Interest Payable and Other Liabilities | Interest rate swap contracts fair value
Derivative [Line Items]
Liability Derivatives	40	95
Derivatives Designated as Hedging Instruments | PC Bancorp | Accrued Interest Payable and Other Liabilities | Interest rate swap contracts fair value
Derivative [Line Items]
Liability Derivatives	$ 467	$ 589

Effect of Derivative Instrument

Effect of Derivative Instruments on Consolidated Statements of Income (Detail) - Loans Payable - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Derivatives not Designated as Hedging Instruments
Derivative [Line Items]
Increase in fair value of interest rate swap contracts	$ 55	$ 39
Payments on interest rate swap contracts on loans and subordinated debentures	(54)	(61)
Derivatives not Designated as Hedging Instruments | Other Non-Interest Income
Derivative [Line Items]
Net increase (decrease) in income	1	(22)
Derivatives Designated as Hedging Instruments
Derivative [Line Items]
Increase in fair value of interest rate swap contracts	122	23
Increase (decrease) in fair value of hedged loans	(12)	212
Payments on interest rate swap contracts on loans and subordinated debentures	(114)	(230)
Derivatives Designated as Hedging Instruments | Interest Income
Derivative [Line Items]
Net increase (decrease) in income	$ (4)	$ 5

Securities Sold under Repurchas

Securities Sold under Repurchase Agreements and Derivatives Securities Offset in Consolidated Financial Statements Due to an Enforceable Master Netting Arrangement (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Offsetting [Abstract]
Interest rate swap contracts fair value - Gross Amounts Recognized in the Consolidated Balance Sheets	$ 421	$ 523
Interest rate swap contracts fair value - Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Interest rate swap contracts fair value - Net Amounts of Assets / Liabilities Presented in the Consolidated Balance Sheets	421	523
Interest rate swap contracts fair value - Gross Amounts Not Offset in the Consolidated Balance Sheets - Financial Instruments	421	523
Interest rate swap contracts fair value - Gross Amounts Not Offset in the Consolidated Balance Sheets - Collateral Pledged	0	0
Interest rate swap contracts fair value - Net Amount (Collateral over liability balance required to be pledged)	0	0
Total - Gross Amounts Recognized in the Consolidated Balance Sheets	421	523
Total - Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Total - Net Amounts of Assets / Liabilities Presented in the Consolidated Balance Sheets	421	523
Total - Gross Amounts Not Offset in the Consolidated Balance Sheets - Financial Instruments	421	523
Total - Gross Amounts Not Offset in the Consolidated Balance Sheets - Collateral Pledged	0	0
Total - Net Amount (Collateral over liability balance required to be pledged)	0	0
Interest rate swap contracts fair value - Gross Amounts Recognized in the Consolidated Balance Sheets	928	1,207
Interest rate swap contracts fair value - Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Interest rate swap contracts fair value - Net Amounts of Assets / Liabilities Presented in the Consolidated Balance Sheets	928	1,207
Interest rate swap contracts fair value - Gross Amounts Not Offset in the Consolidated Balance Sheets - Financial Instruments	928	1,207
Interest rate swap contracts fair value - Gross Amounts Not Offset in the Consolidated Balance Sheets - Collateral Pledged	4,451	4,555
Interest rate swap contracts fair value - Net Amount (Collateral over liability balance required to be pledged)	3,523	3,348
Securities sold under agreements to repurchase - Gross Amounts Recognized in the Consolidated Balance Sheets	11,939	18,816
Securities sold under agreements to repurchase - Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Securities sold under agreements to repurchase - Net Amounts of Assets / Liabilities Presented in the Consolidated Balance Sheets	11,939	18,816
Securities sold under agreements to repurchase - Gross Amounts Not Offset in the Consolidated Balance Sheets - Financial Instruments	11,939	18,816
Securities sold under agreements to repurchase - Gross Amounts Not Offset in the Consolidated Balance Sheets - Collateral Pledged	49,901	48,204
Securities sold under agreements to repurchase - Net Amount (Collateral over liability balance required to be pledged)	37,962	29,388
Total - Gross Amounts Recognized in the Consolidated Balance Sheets	12,867	20,023
Total - Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Total - Net Amounts of Assets Presented in the Consolidated Balance Sheets	12,867	20,023
Total - Gross Amounts Not Offset in the Consolidated Balance Sheets - Financial Instruments	12,867	20,023
Total - Gross Amounts Not Offset in the Consolidated Balance Sheets - Collateral Pledged	54,352	52,759
Total - Net Amount (Collateral over liability balance required to be pledged)	$ 41,485	$ 32,736

Future Compensation Expense Rel

Future Compensation Expense Related to Unvested Restricted Stock Grants (Detail) - Restricted Stock $ in Thousands	3 Months Ended
	Mar. 31, 2017USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remainder of 2017	$ 2,451
2,018	1,596
2,019	539
2,020	171
Thereafter	22
Total	$ 4,779

Stock Options and Restricted 65

Stock Options and Restricted Stock - Additional Information (Detail) - USD ($) shares in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average period over which the total compensation cost related to unvested restricted stock grants not yet recognized	2 years 9 months
Total intrinsic value of options exercised	$ 642,000	$ 2,900,000
Stock-based compensation expense	773,000	834,000
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 773,000	$ 834,000
Restricted Stock | Equity Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation, options granted	40

Share Option Activity (Detail)

Share Option Activity (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Shares
Exercised, Shares	(27,942)
Equity Plan | Stock Options
Shares
Outstanding stock options at beginning, Shares	47,697
Granted, Shares	0
Exercised, Shares	(27,942)
Forfeited, Shares	0
Expired, Shares	0
Outstanding stock options at ending, Shares	19,755	47,697
Exercisable options at March 31, 2017, Shares	19,755
Unvested options at March 31, 2017, Shares	0
Weighted Average Exercise Price
Outstanding stock options at beginning, Weighted Average Exercise Price	$ 12.69
Granted, Weighted Average Exercise Price	0
Exercised, Weighted Average Exercise Price	0
Forfeited, Weighted Average Exercise Price	0
Expired, Weighted Average Exercise Price	0
Outstanding stock options at end, Weighted Average Exercise Price	8.67	$ 12.69
Exercisable options at end, Weighted Average Exercise Price	8.67
Unvested options at end, Weighted Average Exercise Price	$ 0
Weighted Average Remaining Contractual Term
Outstanding stock options at March 31, 2017	2 years 1 month 17 days	1 year 5 months 5 days
Exercisable options at end, Weighted Average Remaining Contractual Term	2 years 1 month 17 days
Aggregate Intrinsic Value
Outstanding stock options at beginning, Aggregate Intrinsic Value	$ 612	$ 1,102
Exercisable options at end, Aggregate Intrinsic Value	612
Unvested options at end, Aggregate Intrinsic Value	$ 0

Restricted Stock Activity (Deta

Restricted Stock Activity (Detail) - Restricted Stock	3 Months Ended
	Mar. 31, 2017$ / sharesshares
Number of Shares
Unvested, at beginning, Number of Shares | shares	282,082
Granted, Number of Shares | shares	65,615
Vested, Number of Shares | shares	(30,582)
Forfeited, Number of Shares | shares	(5,084)
Unvested, at end, Number of Shares | shares	312,031
Weighted-Average Grant-Date Fair Value per Share
Unvested, at beginning, Weighted-Average Grant-Date Fair Value per Share | $ / shares	$ 21.98
Granted, Weighted-Average Grant-Date Fair Value per Share | $ / shares	38.04
Vested, Weighted-Average Grant-Date Fair Value per Share | $ / shares	20.87
Forfeited, Weighted-Average Grant-Date Fair Value per Share | $ / shares	21.59
Unvested, at end, Weighted-Average Grant-Date Fair Value per Share | $ / shares	$ 25.79

Shareholders' Equity - Addition

Shareholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	Nov. 30, 2018	Mar. 01, 2016	Nov. 30, 2014	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Class of Stock [Line Items]
Shares issued during period upon exercise of stock options				27,942
Shares issued during period upon exercise of stock options for total value				$ 435	$ 1,438
Preferred stock, liquidation preference per share			$ 1,000	$ 1,000
Carrying value of preferred stock				$ 16,887		$ 16,995
Series A Preferred Stock
Class of Stock [Line Items]
Preferred stock, liquidation preference per share				$ 1,000		$ 1,000
Coupon dividend rate		9.00%
Series A Preferred Stock | Scenario, Forecast
Class of Stock [Line Items]
Dividend yield from business combination accounting	7.00%
1st Enterprise Bank
Class of Stock [Line Items]
Number of Non-Cumulative Perpetual Preferred Stock, Series D converted to Non-Cumulative Perpetual Preferred Stock, Series A			16,400
Preferred stock estimated period				4 years
Preferred stock net discount				$ 479
Preferred stock accretion on net discount				1,000
Carrying value of preferred stock				17,000
Preferred stock value, gross				16,000
Preferred stock value net premium				$ 500
1st Enterprise Bank | Preferred Stock
Class of Stock [Line Items]
Fair value of preferred stock			$ 16,000
1st Enterprise Bank | SBLF
Class of Stock [Line Items]
Preferred stock issued			16,400
Restricted Stock
Class of Stock [Line Items]
Shares of restricted stock issued to employees and directors				65,615
Share based compensation, unvested restricted shares forfeited				13,296
Shares repurchased of restricted stock value				$ 524
Unvested Restricted Stock
Class of Stock [Line Items]
Share based compensation, unvested restricted shares forfeited				5,084

Changes in Accumulated Other Co

Changes in Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ 338,185	$ 306,807
Related tax effect	(179)	(559)
Reclassification of loss on investment securities available-for-sale to net income	(141)
Related tax effect	59
Other Comprehensive Income	165	769
Ending Balance	346,448	315,988
Unrealized Gains (Losses) on Investment Securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(3,019)	(816)
Net unrealized gain arising during the period	426	1,328
Ending Balance	$ (2,854)	$ (47)

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Other Commitments [Line Items]
Legal proceedings against the company	$ 0
Allowance for losses on unfunded loan commitments	886,000	$ 886,000
Commitments to Extend Credit
Other Commitments [Line Items]
Financial instruments with off balance sheet risk	986,000,000	1,000,000,000
Commitments to Extend Credit | Standby Letters of Credit
Other Commitments [Line Items]
Financial instruments with off balance sheet risk	$ 85,000,000	$ 85,000,000

Financial Assets and Financial

Financial Assets and Financial Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available-for-sale	$ 469,399	$ 469,950
Financial assets measured at fair value on recurring basis	469,820	470,473
Interest Rate Swap Contracts	928	1,207
U.S. Govt Agency and Sponsored Agency - Note Securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available-for-sale	9,956	9,969
U.S. Govt Agency - SBA Securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available-for-sale	121,314	122,850
U.S. Govt Agency - GNMA Mortgage-Backed Securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available-for-sale	20,895	22,370
U.S. Govt Sponsored Agency - CMO & Mortgage-Backed Securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available-for-sale	246,517	238,900
Asset Backed Securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available-for-sale	6,775	6,896
U. S. Treasury Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available-for-sale	63,942	68,965
Interest rate swap contracts fair value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financial assets measured at fair value on recurring basis	421	523
Interest Rate Swap Contracts	928	1,207
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financial assets measured at fair value on recurring basis	63,942	68,965
Quoted Prices in Active Markets for Identical Assets (Level 1) | U. S. Treasury Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available-for-sale	63,942	68,965
Significant Other Observable Inputs (Level 2)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financial assets measured at fair value on recurring basis	405,878	401,508
Significant Other Observable Inputs (Level 2) | U.S. Govt Agency and Sponsored Agency - Note Securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available-for-sale	9,956	9,969
Significant Other Observable Inputs (Level 2) | U.S. Govt Agency - SBA Securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available-for-sale	121,314	122,850
Significant Other Observable Inputs (Level 2) | U.S. Govt Agency - GNMA Mortgage-Backed Securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available-for-sale	20,895	22,370
Significant Other Observable Inputs (Level 2) | U.S. Govt Sponsored Agency - CMO & Mortgage-Backed Securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available-for-sale	246,517	238,900
Significant Other Observable Inputs (Level 2) | Asset Backed Securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available-for-sale	6,775	6,896
Significant Other Observable Inputs (Level 2) | Interest rate swap contracts fair value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financial assets measured at fair value on recurring basis	421	523
Interest Rate Swap Contracts	$ 928	$ 1,207

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Detail) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial assets measured at fair value on recurring basis	$ 469,820,000	$ 470,473,000
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial assets measured at fair value on recurring basis	0	0
Financial liabilities measured at fair value on recurring basis	0	0
Fair Value Hierarchy for Assets Measured on Recurring Basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value assets transfer from level 1 to level 2	0	0
Fair value assets transfer from level 2 to level 1	0	0
Fair Value Hierarchy for Assets Measured on Recurring Basis | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Transfer of assets in or out of Level 3	0	0
Fair Value Hierarchy for Asset Measured on Non-recurring Basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value assets transfer from level 1 to level 2	0	0
Fair value assets transfer from level 2 to level 1	0	0
Fair Value Hierarchy for Asset Measured on Non-recurring Basis | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Transfer of assets in or out of Level 3	$ 0	$ 0

Balances of Assets Measured at

Balances of Assets Measured at Fair Value on Non-Recurring Basis (Detail) - Fair Value Hierarchy for Asset Measured on Non-recurring Basis - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans with specific valuation allowance and/or partial charge-offs (non-purchased credit impaired loans)		$ 73
SBA Servicing Asset	$ 876	940
Total	876	1,013
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans with specific valuation allowance and/or partial charge-offs (non-purchased credit impaired loans)		73
SBA Servicing Asset	876	940
Total	$ 876	$ 1,013

Significant Unobservable Inputs

Significant Unobservable Inputs Used in Fair Value Measurements for Level 3 Assets Measured at Fair Value on Recurring or Non-Recurring Basis (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Fair Value Hierarchy for Asset Measured on Non-recurring Basis
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Assets, fair value	$ 876	$ 1,013
Collateral Dependent Impaired Loans With Specific Valuation Allowance And/Or Partial Charge-Off | Fair Value Hierarchy for Asset Measured on Non-recurring Basis
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Assets, fair value		$ 73
Collateral Dependent Impaired Loans With Specific Valuation Allowance And/Or Partial Charge-Off | Credit Loss Estimate of Aged Accounts Receivable Collateral
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Credit loss factors on aging of accounts receivable collateral		20.00%
Valuation Model and/or Factors		Credit loss factors on aging of accounts receivable collateral
SBA Servicing Assets | Fair Value Hierarchy for Asset Measured on Non-recurring Basis
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Assets, fair value	$ 876	$ 940
SBA Servicing Assets | Discounted Cash Flow
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Discount Rates	13.00%	13.00%
Estimated average remaining life of SBA portfolio	39 months	39 months
SBA Servicing Assets | Discounted Cash Flow - Discount Rates
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Valuation Model and/or Factors	Discount Rates	Discount Rates
SBA Servicing Assets | Discounted Cash Flow - Prepayment Speed
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Valuation Model and/or Factors	Prepayment Speed	Prepayment Speed

Level in Fair Value Hierarchy f

Level in Fair Value Hierarchy for Financial Instruments Estimated Fair Values (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	$ 51,168	$ 41,281
Interest earning deposits in other financial institutions	313,609	167,789
Investment securities held-to-maturity, Carrying Amount	40,945	42,027
Loans, net, Carrying Amount	2,026,533	2,030,852
Bank owned life insurance, Carrying Amount	63,595	51,216
FHLB Stock, Carrying Amount	9,100	9,100
Certificates of deposit, Carrying Amount	30,623	29,480
Securities sold under agreements to repurchase, Carrying Amount	11,939	18,816
Subordinated debentures, Carrying Amount	9,896	9,856
Cash and due from banks	51,168	41,281
Interest earning deposits in other financial institutions	313,609	167,789
Investment securities held-to-maturity	41,159	41,937
Loans, net, Fair Value	2,044,209	2,054,701
Bank owned life insurance, Fair Value	63,595	51,216
FHLB Stock, Fair Value	9,182	9,182
Certificates of deposit, Fair Value	30,625	29,480
Securities sold under agreements to repurchase, Fair Value	11,939	18,816
Subordinated debentures, Fair Value	12,372	12,372
Carrying (Reported) Amount, Fair Value Disclosure
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	51,168	41,281
Interest earning deposits in other financial institutions	313,609	167,789
Investment securities held-to-maturity, Carrying Amount	40,945	42,027
Loans, net, Carrying Amount	2,026,533	2,030,852
Bank owned life insurance, Carrying Amount	63,595	51,216
FHLB Stock, Carrying Amount	9,182	9,182
Certificates of deposit, Carrying Amount	30,623	29,480
Securities sold under agreements to repurchase, Carrying Amount	11,939	18,816
Subordinated debentures, Carrying Amount	9,896	9,856
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	51,168	41,281
Interest earning deposits in other financial institutions	313,609	167,789
Significant Other Observable Inputs (Level 2)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities held-to-maturity	41,159	41,937
Certificates of deposit, Fair Value	30,625	29,480
Securities sold under agreements to repurchase, Fair Value	11,939	18,816
Subordinated debentures, Fair Value	12,372	12,372
Significant Unobservable Inputs (Level 3)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans, net, Fair Value	2,044,209	2,054,701
Bank owned life insurance, Fair Value	63,595	51,216
FHLB Stock, Fair Value	$ 9,182	$ 9,182