Hanmi Financial (HAFC) 10-K 1 Mar 18 2017 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Feb. 26, 2018	Jun. 30, 2017
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	FY
Trading Symbol	HAFC
Entity Registrant Name	HANMI FINANCIAL CORP
Entity Central Index Key	1,109,242
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		32,453,133
Entity Public Float			$ 896,659

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Assets
Cash and due from banks	$ 153,826	$ 147,235
Securities available for sale, at fair value (amortized cost of $581,992 as of December 31, 2017 and $521,053 as of December 31, 2016)	578,804	516,964
Loans held for sale, at the lower of cost or fair value	6,394	9,316
Loans and leases receivable, net of allowance for loan and lease losses of $31,043 as of December 31, 2017 and $32,429 as of December 31, 2016	4,273,415	3,812,340
Accrued interest receivable	12,770	10,987
Premises and equipment, net	26,655	28,698
Other real estate owned (“OREO”), net	1,946	7,484
Customers’ liability on acceptances	803	978
Servicing assets	10,218	10,564
Goodwill and other intangibles, net	12,544	12,889
Federal Home Loan Bank stock (“FHLB”), at cost	16,385	16,385
Deferred tax assets	32,455	46,332
Current tax assets	5,824	1,715
Bank-owned life insurance	50,554	49,440
Prepaid expenses and other assets	27,892	30,019
Total assets	5,210,485	4,701,346
Deposits:
Noninterest-bearing	1,312,274	1,203,240
Interest-bearing	3,036,380	2,606,497
Total deposits	4,348,654	3,809,737
Accrued interest payable	5,309	2,567
Bank’s liability on acceptances	803	978
Borrowings	150,000	315,000
Subordinated debentures	117,270	18,978
Accrued expenses and other liabilities	25,972	23,061
Total liabilities	4,648,008	4,170,321
Stockholders’ equity:
Common stock, $0.001 par value; authorized 62,500,000 shares; issued 33,083,133 shares (32,431,627 shares outstanding) as of December 31, 2017 and issued 32,946,197 shares (32,330,747 shares outstanding) as of December 31, 2016	33	33
Additional paid-in capital	565,627	562,446
Accumulated other comprehensive loss, net of tax benefit of $1,319 as of December 31, 2017 and $1,695 as of December 31, 2016	(1,869)	(2,394)
Retained earnings	70,575	41,726
Less: treasury stock, at cost; 651,506 shares as of December 31, 2017 and 615,450 shares as of December 31, 2016	(71,889)	(70,786)
Total stockholders’ equity	562,477	531,025
Total liabilities and stockholders’ equity	$ 5,210,485	$ 4,701,346

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Amortized cost of securities available-for-sale	$ 581,992	$ 521,053
Allowance for loan losses of loans receivable	$ 31,043	$ 32,429
Common stock, par value (in usd per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	62,500,000	62,500,000
Common stock, shares issued (in shares)	33,083,133	32,946,197
Common stock, shares outstanding (in shares)	32,431,627	32,330,747
Tax benefit	$ 1,319	$ 1,695
Treasury stock, shares (in shares)	651,506	615,450

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Interest and dividend income:
Interest and fees on loans and leases	$ 195,790	$ 164,642	$ 148,797
Interest on securities	11,850	11,154	12,422
Dividends on FRB and FHLB stock	1,232	2,467	2,786
Interest on deposits in other banks	449	208	221
Total interest and dividend income	209,321	178,471	164,226
Interest expense:
Interest on deposits	26,089	16,570	15,410
Interest on borrowings	1,077	879	76
Interest on subordinated debentures	5,353	825	623
Total interest expense	32,519	18,274	16,109
Net interest income before provision for loan and lease losses	176,802	160,197	148,117
Loan and lease loss provision (income)	831	(4,339)	(11,614)
Net interest income after provision for loan and lease losses	175,971	164,536	159,731
Noninterest income:
Service charges on deposit accounts	10,396	11,380	12,900
Trade finance and other service charges and fees	4,495	4,232	4,623
Gain on sales of Small Business Administration (SBA) loans	8,734	6,034	8,749
Disposition gains on Purchased Credit Impaired (PCI) loans	1,792	4,970	10,167
Net gain on sales of securities	1,748	46	6,611
Other operating income	6,250	6,413	4,552
Total noninterest income	33,415	33,075	47,602
Noninterest expense:
Salaries and employee benefits	67,944	63,956	62,864
Occupancy and equipment	15,740	14,992	17,371
Data processing	6,960	5,674	6,321
Professional fees	5,464	5,374	7,905
Supplies and communications	2,912	2,949	3,582
Advertising and promotion	3,952	3,910	4,201
Merger and integration costs (income)	(40)	312	1,971
OREO expense	302	63	307
Other operating expenses	10,868	10,993	10,806
Total noninterest expense	114,102	108,223	115,328
Income from continuing operations before provision for income taxes	95,284	89,388	92,005
Provision for income taxes	40,624	32,899	38,182
Net income	$ 54,660	$ 56,489	$ 53,823
Basic earnings per share:
Basic earnings per share (in usd per share)	$ 1.70	$ 1.76	$ 1.69
Diluted earnings per share:
Diluted earnings per share (in usd per share)	$ 1.69	$ 1.75	$ 1.68
Weighted-average shares outstanding:
Basic (shares)	32,071,585	31,899,582	31,788,215
Diluted (shares)	32,249,918	32,048,704	31,876,820

Consolidated Statements of Inc5

Consolidated Statements of Income (Parenthetical) $ in Thousands	3 Months Ended
	Jun. 30, 2014USD ($)
Income Statement [Abstract]
Gain on disposal	$ 51

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 54,660	$ 56,489	$ 53,823
Unrealized gain (loss) on securities
Unrealized holding gain (loss) arising during period	2,649	(1,712)	5,265
Less: reclassification adjustment for net gain included in net income	(1,748)	(46)	(6,611)
Unrealized loss on interest-only strip of servicing assets	0	(9)	(7)
Income tax (expense) benefit related to items of other comprehensive income	(376)	(312)	575
Other comprehensive income (loss)	525	(2,079)	(778)
Comprehensive income	$ 55,185	$ 54,410	$ 53,045

Consolidated Statements of Chan

Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Accumulated (Deficit) Retained Earnings [Member]	Treasury Stock, at Cost [Member]
Beginning balance at Dec. 31, 2014	$ 453,387	$ 257	$ 554,904	$ 463	$ (32,379)	$ (69,858)
Beginning balance issued, shares at Dec. 31, 2014		32,488,097
Beginning balance treasury stock, shares at Dec. 31, 2014		(577,894)
Beginning balance outstanding, shares at Dec. 31, 2014		31,910,203
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock options exercised	$ 616		616
Stock options exercised, shares	46,516	46,516
Restricted stock awards, net of forfeitures	$ 0	$ 0	0	0	0	0
Restricted stock awards, net of forfeitures, shares		31,909
Share-based compensation expense	2,241		2,241
Restricted stock surrendered due to employee tax liability	(349)					(349)
Restricted stock surrendered due to employee tax liability, shares		(14,269)
Cash dividends declared	(15,022)				(15,022)
Net income	53,823				53,823
Change in unrealized gain (loss) on securities available for sale and interest-only strips, net of income taxes	(778)			(778)
Ending balance at Dec. 31, 2015	493,918	$ 257	557,761	(315)	6,422	(70,207)
Ending balance issued, shares at Dec. 31, 2015		32,566,522
Ending balance treasury stock, shares at Dec. 31, 2015		(592,163)
Ending balance outstanding, shares at Dec. 31, 2015		31,974,359
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Correction of accounting for the 2011 1-for-8 stock split		$ (224)	224
Stock options exercised	$ 1,453		1,453
Stock options exercised, shares	94,997	94,997
Restricted stock awards, net of forfeitures	$ 0
Restricted stock awards, net of forfeitures, shares		284,678
Share-based compensation expense	3,008		3,008
Restricted stock surrendered due to employee tax liability	(579)					(579)
Restricted stock surrendered due to employee tax liability, shares		(23,287)
Cash dividends declared	(21,185)				(21,185)
Net income	56,489				56,489
Change in unrealized gain (loss) on securities available for sale and interest-only strips, net of income taxes	(2,079)			(2,079)
Ending balance at Dec. 31, 2016	$ 531,025	$ 33	562,446	(2,394)	41,726	(70,786)
Ending balance issued, shares at Dec. 31, 2016		32,946,197
Ending balance treasury stock, shares at Dec. 31, 2016	(615,450)	(615,450)
Ending balance outstanding, shares at Dec. 31, 2016		32,330,747
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock options exercised	$ 288		288
Stock options exercised, shares	23,813	23,813
Restricted stock awards, net of forfeitures	$ 0
Restricted stock awards, net of forfeitures, shares		113,123
Share-based compensation expense	2,893		2,893
Restricted stock surrendered due to employee tax liability	(1,103)					(1,103)
Restricted stock surrendered due to employee tax liability, shares		(36,056)
Cash dividends declared	(25,811)				(25,811)
Net income	54,660				54,660
Change in unrealized gain (loss) on securities available for sale and interest-only strips, net of income taxes	525			525
Ending balance at Dec. 31, 2017	$ 562,477	$ 33	$ 565,627	$ (1,869)	$ 70,575	$ (71,889)
Ending balance issued, shares at Dec. 31, 2017		33,083,133
Ending balance treasury stock, shares at Dec. 31, 2017	(651,506)	(651,506)
Ending balance outstanding, shares at Dec. 31, 2017		32,431,627

Consolidated Statements of Cha8

Consolidated Statements of Changes in Stockholders' Equity (Parenthetical)	12 Months Ended
	Dec. 31, 2011
Statement of Stockholders' Equity [Abstract]
1-for-8 stock split ratio	0.125

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash Flows from Operating Activities:
Net income	$ 54,660	$ 56,489	$ 53,823
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	12,854	14,578	17,846
Share-based compensation expense	2,893	3,008	2,241
Loan and lease loss provision (income)	831	(4,339)	(11,614)
Gain on sales of securities	(1,748)	(46)	(6,611)
Gain on sales of premises and equipment	(1)	(1,053)	(137)
Gain on sales of SBA loans	(8,734)	(6,034)	(8,749)
Disposition gains on PCI loans	(1,792)	(4,970)	(10,167)
Loss on sales of other real estate owned	(482)	0	0
Valuation adjustment on other real estate owned	784	63	(27)
Origination of SBA loans held for sale	(109,111)	(91,367)	(86,657)
Proceeds from sales of SBA loans	117,780	92,215	98,083
Change in accrued interest receivable	(1,783)	(1,486)	248
Change in bank-owned life insurance	(1,114)	(1,100)	(797)
Change in prepaid expenses and other assets	1,580	(1,434)	3,720
Change in current tax assets	(4,109)	5,451	18,055
Change in deferred tax assets	13,501	3,364	9,142
Change in accrued interest payable	2,742	(610)	(273)
Change in other liabilities	1,113	(8,346)	(11,596)
Net cash provided by operating activities	79,864	54,383	66,530
Cash flows from investing activities:
Proceeds from redemption of FHLB stock	0	0	1,195
Proceeds from redemption of FRB stock	0	14,423	0
Proceeds from matured, called and repayment of securities	79,878	114,012	135,413
Proceeds from sales of securities	97,271	78,282	454,201
Proceeds from sales of other real estate owned	5,711	5,474	7,532
Proceeds from sales of loans held for sale	0	0	360
Proceeds from insurance settlement on bank-owned life insurance	0	0	1,323
Change in loans and leases receivable	(191,765)	(271,733)	(169,816)
Purchases of securities available for sale	(242,369)	(19,992)	(232,035)
Purchases of premises and equipment	(843)	(730)	(1,146)
Purchases of loans and leases receivable	(266,275)	(410,897)	(215,469)
Purchases of FRB stock	0	(325)	(1,825)
Net cash used in investing activities	(518,392)	(491,486)	(20,267)
Cash flows from financing activities:
Change in deposits	538,917	299,761	(46,770)
Change in borrowings	(165,000)	145,000	20,000
Redemption of subordinated debentures	97,828	0	0
Redemption of rescinded stock obligation	0	0	(933)
Proceeds from exercise of stock options	288	1,453	616
Cash paid for repurchases of vested shares due to employee tax liability	(1,103)	(579)	(349)
Cash dividends paid	(25,811)	(25,661)	(12,783)
Net cash provided by (used in) financing activities	445,119	419,974	(40,219)
Net increase (decrease) in cash and cash equivalents	6,591	(17,129)	6,044
Cash and cash equivalents at beginning of year	147,235	164,364	158,320
Cash and cash equivalents at end of period	153,826	147,235	164,364
Cash paid during the period for:
Interest	32,519	18,884	16,382
Income taxes	28,135	23,327	7,928
Non-cash activities:
Transfer of loans receivable to other real estate owned	143	4,763	318
Transfer of loans receivable to loans held for sale	0	0	360
Income tax (expense) benefit related to items of other comprehensive income	(376)	(312)	575
Change in unrealized (gain) loss in accumulated other comprehensive income	(2,649)	1,712	(5,258)
Cash dividend declared	$ (25,811)	$ (21,185)	$ (15,022)

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2017
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Summary of Operations Hanmi Financial Corporation (“Hanmi Financial,” the “Company,” “we,” “us” or “our”) was formed as a holding company of Hanmi Bank (the “Bank”) and registered with the Securities and Exchange Commission under the Securities Act on March 17, 2001. The Bank's primary operations are related to traditional banking activities, including the acceptance of deposits and the lending and investing of money. Effective July 19, 2016, the Bank converted from a state member bank to a state nonmember bank and, as a result, the FDIC is now its primary federal bank regulator. The California Department of Business Oversight remains the Bank's primary state bank regulator. During the third quarter of 2016, the Federal Reserve canceled the Bank's holdings of Federal Reserve stock for $14.4 million in cash. The Bank is a community bank conducting general business banking, with its primary market encompassing the Korean-American community as well as other ethnic communities across California, Texas, Illinois, Virginia, New Jersey, and New York. The Bank’s full-service offices are located in markets where many of the businesses are run by immigrants and other minority groups. The Bank’s client base reflects the multi-ethnic composition of these communities. The Bank is a California state-chartered financial institution insured by the FDIC. As of December 31, 2017 , the Bank maintained a network of 40 full-service branch offices and 8 loan production offices in California, Texas, Illinois, Virginia, New Jersey, New York, Colorado, Georgia and Washington State. Basis of Presentation The accounting and reporting policies of Hanmi Financial and subsidiaries conform, in all material respects, to U.S. generally accepted accounting principles (“GAAP”) and general practices within the banking industry. The information set forth in the following notes is presented on a continuing operations basis, unless otherwise noted. The following is a summary of the significant accounting policies consistently applied in the preparation of the accompanying Consolidated Financial Statements. Principles of Consolidation The Consolidated Financial Statements include the accounts of Hanmi Financial and our wholly-owned subsidiary, the Bank. All intercompany transactions and balances have been eliminated in consolidation. Use of Estimates in the Preparation of Financial Statements The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Significant areas where estimates are made consist of the allowance for loan and lease losses and allowance for off-balance sheet items, other-than-temporary impairment, securities valuations, purchase credit impaired loans, the fair values of assets and liabilities acquired in a business combination and income taxes. Actual results could differ from those estimates. Reclassifications Certain amounts in the prior years' financial statements and related disclosures were reclassified to conform to the current year presentation with no effect on previously reported net income, stockholders’ equity or cash flows. Segment Reporting Through our branch network and lending units, we provide a broad range of financial services to individuals and companies. These services include demand, time and savings deposits; and commercial and industrial, real estate and consumer lending. While our chief decision makers monitor the revenue streams of our various products and services, operations are managed and financial performance is evaluated on a company-wide basis. Accordingly, we consider all of our operations to be aggregated in one reportable operating segment. Cash and Cash Equivalents Cash and cash equivalents include cash, due from banks and overnight federal funds sold, all of which have original or purchased maturities of less than 90 days. Securities Securities are classified into three categories and accounted for as follows: (i) Securities that we have the positive intent and ability to hold to maturity are classified as “held to maturity” and reported at amortized cost; (ii) Securities that are bought and held principally for the purpose of selling them in the near future are classified as “trading securities” and reported at fair value. Unrealized gains and losses are recognized in earnings; and (iii) Securities not classified as held to maturity or trading securities are classified as “available for sale” and reported at fair value. Unrealized gains and losses are reported as a separate component of stockholders’ equity as accumulated other comprehensive income, net of income taxes. We review securities on an ongoing basis for the presence of other-than-temporary impairment (“OTTI”) or permanent impairment, taking into consideration current market conditions, fair value in relationship to cost, extent and nature of the change in fair value, issuer rating changes and trends, whether we intend to sell a security or if it is likely that we will be required to sell the security before recovery of our amortized cost basis of the investment, which may be maturity, and other factors. For debt securities, the classification of OTTI depends on whether we intend to sell the security or if it is more likely than not that we will be required to sell the security before recovery of its cost basis, and on the nature of the impairment. If we intend to sell a security or if it is more likely than not that we will be required to sell the security before recovery, an OTTI write-down is recognized in earnings equal to the entire difference between the security’s amortized cost basis and its fair value. If we do not intend to sell the security or it is not more likely than not that we will be required to sell the security before recovery, the OTTI write-down is separated into an amount representing credit loss, which is recognized in earnings, and the amount related to all other factors, which is recognized in other comprehensive income net of tax. A credit loss is the difference between the cost basis of the security and the present value of cash flows expected to be collected, discounted at the security’s effective interest rate at the date of acquisition. The cost basis of an other than temporarily impaired security is written down by the amount of impairment recognized in earnings. The new cost basis is not adjusted for subsequent recoveries in fair value. Loans and leases receivable Originated loans and leases: Loans and leases are originated by the Company with the intent to hold them for investment and are stated at the principal amount outstanding, net of unearned income. Net deferred fees and costs include nonrefundable loan fees and direct loan origination costs. Net deferred fees or costs are recognized as an adjustment to interest income over the contractual life of the loans using the effective interest method or taken into income when the related loans are paid off or sold. The amortization of loan fees or costs is discontinued when a loan is placed on nonaccrual status. Interest income is recorded on an accrual basis in accordance with the terms of the respective loan and includes prepayment penalties. Purchased loans: Purchased loans are stated at the principal amount outstanding, net of unearned discounts or unamortized premiums. All loans acquired in our acquisitions are initially measured and recorded at their fair value on the acquisition date. A component of the initial fair value measurement is an estimate of the loan losses over the life of the purchased loans. Purchased loans are also evaluated for impairment as of the acquisition date and are accounted for as “acquired non-impaired” or “purchased credit impaired” loans. Leases Receivable: As described in “Note 2 — Acquisitions” to the consolidated financial statements, we purchased a portfolio of leases receivable during the fourth quarter of 2016. These receivables include equipment finance agreements with terms ranging from 1 to 7 years. The acquired leases receivable were measured and recorded at fair value on the date of acquisition. Leases originated by the Bank subsequent to acquisition are recorded based on the principal amount outstanding, net of unearned income, and initial indirect costs. Equipment leases are similar to commercial business loans in that the leases are typically made on the basis of the borrower’s ability to make repayment from the cash flows of the borrower’s business. Acquired non-impaired loans and leases: Acquired non-impaired loans and leases are those loans for which there was no evidence of credit deterioration at their acquisition date and it was probable that we would be able to collect all contractually required payments. Acquired non-impaired loans and leases, together with originated loans and leases, are referred to as non-purchased credit impaired (“Non-PCI”) loans and leases. Purchase discount or premium on acquired non-impaired loans and leases is recognized as an adjustment to interest income over the contractual life of such loans and leases using the effective interest method or taken into income when the related loans or leases are paid off or sold. Purchased credit impaired loans. Purchased credit impaired (“PCI”) loans are accounted for in accordance with the Financial Accounting Standards Board’s (“FASB”) Accounting Standards Codification (“ASC”) Subtopic 310-30, “ Loans and Debt Securities Acquired with Deteriorated Credit Quality.” A purchased loan is deemed to be credit impaired when there is evidence of credit deterioration since its origination and it is probable at the acquisition date that we would be unable to collect all contractually required payments. We apply PCI loan accounting (i) when we acquire loans deemed to be impaired, and (ii) as a general policy election for non-impaired loans that we acquire in a distressed bank acquisition. For PCI loans, at the time of acquisition we (i) calculated the contractual amount and timing of undiscounted principal and interest payments (the “undiscounted contractual cash flows”) and (ii) estimated the amount and timing of undiscounted expected principal and interest payments (the “undiscounted expected cash flows”). The difference between the undiscounted contractual cash flows and the undiscounted expected cash flows is the nonaccretable difference. The nonaccretable difference represents an estimate of the loss exposure of principal and interest related to the PCI loan portfolios; such amount is subject to change over time based on the performance of such loans. The carrying value of PCI loans is reduced by payments received, both principal and interest, and increased by the portion of the accretable yield recognized as interest income. The excess of expected cash flows at acquisition over the initial fair value of acquired impaired loans is referred to as the “accretable yield” and is recorded as interest income over the estimated life of the loans using the effective yield. If estimated cash flows are indeterminable, the recognition of interest income will cease to be recognized. At acquisition, the Company may aggregate PCI loans into pools having common credit risk characteristics such as product type, geographic location and risk rating. Increases in expected cash flows over those previously estimated increase the accretable yield and are recognized as interest income prospectively. Decreases in the amount and changes in the timing of expected cash flows compared to those previously estimated decrease the accretable yield and usually result in a provision for loan losses and the establishment of an allowance for loan losses. As the accretable yield increases or decreases from changes in cash flow expectations, the offset is a decrease or increase to the nonaccretable difference. The accretable yield is measured at each financial reporting date based on information then currently available and represents the difference between the remaining undiscounted expected cash flows and the current carrying value of the loans. The Company removes loans from loan pools when the Company receives payment in settlement with the borrower, sells the loan, or foreclose upon the collateral securing the loan. The Company recognizes "Disposition gain on Purchased Credit Impaired Loans" when the cash proceeds or the amount received are in excess of the loan's carrying amount. The removal of the loan from the loan pool and the recognition of disposition gains do not affect the then applicable loan pool accretable yield. PCI loans that are contractually past due are still considered to be accruing and performing as long as there is an expectation that the estimated cash flows will be received. If the timing and amount of cash flows is not reasonably estimable, the loans may be classified as nonaccrual with interest income recognized on either a cash basis or as a reduction of the principal amount outstanding. Non-PCI loans are placed on nonaccrual status when, in the opinion of management, the full timely collection of principal or interest is in doubt. Generally, the accrual of interest is discontinued when principal or interest payments become more than 90 days past due. However, in certain instances, we may place a particular loan on nonaccrual status earlier, depending upon the individual circumstances surrounding the loan’s delinquency. When an asset is placed on nonaccrual status, previously accrued but unpaid interest is reversed against current income. Subsequent collections of cash are applied as principal reductions when received, except when the ultimate collectability of principal is probable, in which case interest payments are credited to income. Nonaccrual assets may be restored to accrual status when principal and interest become current and full repayment is expected, which generally occurs after sustained payment of 6 months. Interest income is recognized on the accrual basis for impaired loans not meeting the criteria for nonaccrual. Nonperforming assets consist of loans and leases on nonaccrual status, loans 90 days or more past due and still accruing interest, loans restructured with troubled borrowers where the terms of repayment have been renegotiated resulting in a reduction or deferral of interest or principal, and other real estate owned (“OREO”). Loans are generally placed on nonaccrual status when they become 90 days past due unless management believes the loan is adequately collateralized and in the process of collection. Additionally, the Bank may place loans that are not 90 days past due on nonaccrual status, if management reasonably believes the borrower will not be able to comply with the contractual loan repayment terms and collection of principal or interest is in question. Loans Held for Sale Loans originated, or transferred from loans and leases receivable, and intended for sale in the secondary market are carried at the lower of aggregate cost or fair market value. Fair market value, if lower than cost, is determined based on valuations obtained from market participants or the value of underlying collateral, calculated individually. A valuation allowance is established if the market value of such loans is lower than their cost and net unrealized losses, if any, are recognized through a valuation allowance by charges to income. Origination fees on loans held for sale, net of certain costs of processing and closing the loans, are deferred until the time of sale and are included in the computation of the gain or loss from the sale of the related loans. Allowance for Loan and Lease Losses on Non-PCI Loans Management believes the allowance for loan and lease losses is appropriate to provide for probable losses inherent in the loan portfolio. However, the allowance is an estimate that is inherently uncertain and depends on the outcome of future events. Management’s estimates are based on: previous loss experience; volume, growth, size and composition of the loan portfolio; the value of collateral; and current economic conditions. Our lending is concentrated generally in real estate, commercial, SBA and trade finance lending to small and middle market businesses primarily in California, Illinois, and Texas. The Bank charges or credits the income statement for provisions to the allowance for loan losses and the allowance for off-balance sheet items at least quarterly based upon the allowance need. The allowance is determined through an analysis involving quantitative calculations based on historic loss rates and qualitative adjustments for general allowances and individual impairment calculations for specific allocations. The Bank charges the allowance for actual losses on loans and credits the allowance for recoveries on loans previously charged-off. The Bank evaluates the allowance methodology at least annually. For the fourth quarter of 2017, the Bank utilized a 27-quarter look-back period, anchored to the first quarter of 2011, with equal weighting to all quarters. Management determined it was appropriate to anchor the look-back period, in consideration for a prolonged period of low losses and the procyclical nature of provisioning. The anchoring will allow the Bank to better capture the economic cycle while improving the ability to measure losses. For the fourth quarter of 2016, the Bank utilized a 24-quarter rolling look-back period. For the fourth quarter of 2015, the Bank utilized a 20-quarter rolling look-back period. In addition, the estimated loss emergence period utilized in the Bank’s loss migration analysis changed to 2.5 years in 2016 from estimated 1.0 year in 2015, and remained unchanged in 2017. Moreover, in the fourth quarter of 2015, the Bank reevaluated the qualitative adjustments, reducing their affect in light of the lengthening of the business cycle and the continued improvement in credit metrics. The changes in methodology did not materially affect the amount of the allowance at December 31, 2017, 2016 or 2015. To determine general allowance requirements, in 2016 existing loans were divided into eleven general loan pools of risk-rated loans as well as three homogeneous loan pools and in 2015, existing loans were divided into fourteen general loan pools of risk-rated loans as well as three homogeneous loan pools. In 2016, the pooling was revised to eliminate loan types that can be combined under a broader category in order to maintain an accurate analysis of the defined segmentation. For risk-rated loans, migration analysis allocates historical losses by loan pool and risk grade to determine risk factors for potential loss inherent in the current outstanding loan portfolio. Since the homogeneous loans are bulk graded, the risk grade is not factored into the historical loss analysis. In addition, specific allowances are allocated for loans deemed “impaired.” When determining the appropriate level for allowance for loan losses, management considers qualitative adjustments for any factors that are likely to cause estimated loan losses associated with the Bank’s current portfolio to differ from historical loss experience, including, but not limited to, national and local economic and business conditions, volume and geographic concentrations, and problem loan trends. To systematically quantify the credit risk impact of trends and changes within the loan portfolio, a credit risk matrix is utilized. The qualitative factors are considered on a loan pool by loan pool basis subsequent to, and in conjunction with, a loss migration analysis. The credit risk matrix provides various scenarios with positive or negative impact on the portfolio along with corresponding basis points for qualitative adjustments. Additions to the allowance account are charged to earnings through a provision for loan losses while reductions are credited to earnings. The allowance for loan losses is maintained at a level considered adequate by management to absorb probable losses in the loan portfolio. The adequacy of the allowance is determined by management based upon an evaluation and review of the loan portfolio, consideration of historical loan loss experience, current economic conditions, changes in the size and composition of the loan portfolio, analysis of collateral values and other pertinent factors. Loans are measured for impairment when it is probable that not all amounts, including principal and interest, will be collected in accordance with the original contractual terms of the loan agreement. The amount of impairment and any subsequent changes are recorded through the provision for loan losses as an adjustment to the allowance for loan losses. The Bank follows the “Interagency Policy Statement on the Allowance for Loan and Lease Losses” and, as an integral part of the quarterly credit review process, the allowance for loan losses and allowance for off-balance sheet items are reviewed for adequacy. The California Department of Business Oversight and/or the Federal Deposit Insurance Corporation may require the Bank to recognize additions to the allowance for loan losses based upon their assessment of the information available to them at the time of their examinations. In general, the Bank will charge off a loan and declare a loss when its collectability is questionable and when the Bank can no longer justify presenting the loan as an asset on its balance sheet. To determine if a loan should be charged off, all possible sources of repayment are analyzed, including the potential for future cash flow from income or liquidation of other assets, the value of any collateral, and the strength of co-makers or guarantors. When these sources do not provide a reasonable probability that principal can be collected in full, the Bank will fully or partially charge off the loan. For a real estate loan, including commercial term loans secured by collateral, any impaired portion is considered as loss if the loan is more than 90 days past due. In a case where the fair value of collateral is less than the loan balance and the borrower has no other assets or income to support repayment, the amount of the deficiency is considered a loss and charged off. For a commercial and industrial loan other than those secured by real estate, if the borrower is in the process of a bankruptcy filing in which the Bank is an unsecured creditor or deemed virtually unsecured by lack of collateral equity or lien position and the borrower has no realizable equity in assets and prospects for recovery are negligible, the loan is considered a loss and charged off. Additionally, a commercial and industrial unsecured loan that is more than 120 days past due is considered a loss and charged off. For an unsecured consumer loan where a borrower files for bankruptcy, the loan is considered a loss within 60 days of receipt of notification of filing from the bankruptcy court. Other consumer loans are considered a loss if they are more than 90 days past due. Other events, such as bankruptcy, fraud, or death result in charge offs being recorded in an earlier period. Allowance for Loan Losses on PCI Loans The PCI loans are subject to our internal and external credit review. If deterioration in the expected cash flows results in a allowance requirement, a provision for loan losses is charged to earnings. For PCI loans, the allowance for loan losses is measured at the end of each financial reporting period based on expected cash flows. Decreases or increases in the amount and changes in the timing of expected cash flows on the PCI loans as of the financial reporting date compared to those previously estimated are usually recognized by recording a provision or a negative provision for loan losses on such loans. Impaired Loans Loans are identified and classified as impaired when it is probable that not all amounts, including principal and interest, will be collected in accordance with the contractual terms of the loan agreement. The Bank will consider the following loans as impaired: nonaccrual loans or loans where principal or interest payments have been contractually past due for 90 days or more, unless the loan is both well-collateralized and in the process of collection; and loans classified as troubled debt restructuring loans. The Bank considers whether the borrower is experiencing problems such as operating losses, marginal working capital, inadequate cash flows or business deterioration in realizable value. The Bank also considers the financial condition of a borrower who is in industries or countries experiencing economic or political instability. When a loan is considered impaired, any future cash receipts on such loans will be treated as either interest income or return of principal depending upon management’s opinion of the ultimate risk of loss on the individual loan. Cash payments are treated as interest income where management believes the remaining principal balance is fully collectible. We evaluate loan impairment in accordance with GAAP. Impaired loans are measured 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, less costs to sell. If the value of the impaired loan is less than the recorded investment in the loan, the deficiency will be charged off against the allowance for loan losses or, alternatively, a specific allocation will be established. Additionally, impaired loans are specifically excluded from the quarterly migration analysis when determining the amount of the allowance for loan losses required for the period. For impaired loans where the impairment amount is measured based on the present value of expected future cash flows discounted at the loan’s original effective interest rate, any impairment that represents the change in present value attributable to the passage of time is recognized as provision for loan losses. Troubled Debt Restructuring A loan is identified as a troubled debt restructuring (“TDR”) when a borrower is experiencing financial difficulties and, for economic or legal reasons related to these difficulties, the Bank grants a concession to the borrower in the restructuring that it would not otherwise consider. The Bank has granted a concession when, as a result of the restructuring, it does not expect to collect all amounts due, including principal and/or interest accrued at the original terms of the loan. The concessions may be granted in various forms, including a below-market change in the stated interest rate, a reduction in the loan balance or accrued interest, an extension of the maturity date, or a note split with principal forgiveness. TDRs are reviewed for potential impairment. Generally, a nonaccrual loan that is restructured remains on nonaccrual status for a period of six months to demonstrate that the borrower can perform under the restructured terms. If the borrower’s performance under the new terms is not reasonably assured, the loan remains classified as a nonaccrual loan. Loans classified as TDRs are reported as impaired loans. Premises and Equipment Premises and equipment are stated at cost, less accumulated depreciation and amortization. Depreciation and amortization are computed on the straight-line method over the estimated useful lives of the various classes of assets. The ranges of useful lives for the principal classes of assets are as follows: Buildings and improvements 10 to 30 years Furniture and equipment 3 to 10 years Leasehold improvements Term of lease or useful life, whichever is shorter Software 3 years Impairment of Long-Lived Assets We account for long-lived assets in accordance with the provisions of FASB ASC 360, “Property, Plant and Equipment.” This requires that long-lived assets and certain identifiable intangibles be reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to future net undiscounted cash flows expected to be generated by the asset. If such assets are considered to be impaired, the impairment to be recognized is measured by the amount by which the carrying amount of the assets exceeds the fair value of the assets. Assets to be disposed of are reported at the lower of the carrying amount or fair value less costs to sell. Other Real Estate Owned Assets acquired through loan foreclosure are recorded at the lower of cost or fair value less estimated costs to sell when acquired. If fair value declines subsequent to foreclosure, valuation impairment is recorded through expense. Operating costs after acquisition are expensed. Servicing Assets and Servicing liabilities Servicing assets and servicing liabilities are initially recorded at fair value in accordance with the provisions of FASB ASC 860, “ Transfers and Servicing .” The fair values of servicing assets and servicing liabilities represent either the price paid if purchased, or the allocated carrying amounts based on relative values when retained in a sale. Servicing assets and servicing liabilities are amortized in proportion to, and over the period of, estimated net servicing income. The fair value of servicing assets and servicing liabilities are determined based on the present value of estimated net future cash flows related to contractually specified servicing fees and costs. The servicing assets and servicing liabilities are recorded based on the present value of the contractually specified servicing fee, net of adequate compensation cost, for the estimated life of the loan, using a discount rate and a constant prepayment rate. Management periodically evaluates the servicing assets and servicing liabilities for impairment. Impairment, if it occurs, is recognized in a valuation allowance in the period of impairment. Goodwill and Other Intangible Assets Goodwill and other intangible assets consist of acquired intangible assets arising from acquisitions, including core deposit and third-party originators intangibles. The acquired intangible assets were initially measured at fair value and then are amortized on the straight-line method over their estimated useful lives while goodwill is not amortized. Goodwill and other intangible assets are assessed for impairment annually or whenever events or changes in circumstances indicate the carrying amount may not be recoverable. The Company performed its annual impairment test and determined no impairment existed as of December 31, 2017. Federal Home Loan Bank Stock The Bank is a member of the Federal Home Loan Bank (“FHLB”) of San Francisco and is required to own common stock in the FHLB based upon the Bank’s balance of outstanding FHLB advances. FHLB stock is carried at cost and may be sold back to the FHLB at its carrying value. FHLB stock is periodically evaluated for impairment based on ultimate recovery of par value. Both cash and stock dividends received are reported as dividend income. Federal Reserve Bank Stock The Bank was a member of the Federal Reserve Bank (“FRB”) of San Francisco and was required to maintain stock in the FRB based on a specified ratio relative to the Bank’s capital. Effective July 19, 2016, the Bank converted from a state member bank to a state nonmember bank and, as a result, the Federal Deposit Insurance Corporation is now its primary federal bank regulator. Our holdings of FRB stock were canceled by the Federal Reserve. FRB stock is carried at cost as of December 31, 2015. Both cash and stock dividends received are reported as dividend income. Bank-Owned Life Insurance We have purchased single premium life insurance policies (“bank-owned life insurance”) on certain officers. The Bank is the beneficiary under each policy. In the event of the death of a covered officer, we will receive the specified insurance benefit from the insurance carrier. Bank-owned life insurance is recorded at the amount that can be realized under the insurance contract at the balance sheet date, which is the cash surrender value adjusted for other charges or other amounts due, if any, that are probable at settlement. Income Tax We provide for income taxes using the asset and liability method. Under this method, deferred tax assets and liabilities are recognized for the future tax consequences attributable to

Acquisition

Acquisition	12 Months Ended
	Dec. 31, 2017
Business Combinations [Abstract]
Acquisitions	Acquisitions Acquisition of Certain Leases of Irvine, California-based Banc of California On October 27, 2016, the Bank acquired certain leases of Irvine, California-based Banc of California. The acquisition included the purchase of equipment leases diversified across the U.S. with concentrations in California, Georgia and Texas. This transaction was considered a purchase of a business in accordance with current accounting guidance and accordingly the Bank applied the acquisition method of accounting to the transaction. Cash consideration paid was $240.8 million and the net estimated fair value of the equipment lease portfolio was $228.2 million as of the acquisition date. In addition to the leases, the Bank recorded other tangible and intangible assets of $12.6 million . The intangible assets included an identifiable intangible asset representing the estimated fair value of third-party originators ("TPO") of $483,000 and goodwill of $11.0 million . The TPO intangible is being amortized over its estimated useful life of 7 years. Acquisition of Central Bancorp, Inc. On August 31, 2014, Hanmi Financial completed its acquisition of Central Bancorp, Inc. ("CBI"), the parent company of United Central Bank. A core deposit intangible (“CDI”) of $2.2 million was recognized for the core deposits acquired from CBI. The CDI is amortized over its useful life of approximately 10 years on an accelerated basis and reviewed for impairment as circumstances warrant. The CDI amortization expense for the years ended December 31, 2017 , 2016 and 2015 was $280,000 , $326,000 and $379,000 , respectively. Additionally, a premium of $11.3 million was recognized for certificates of deposit acquired from CBI. The accretion of time deposit premium for the years ended December 31, 2017 , 2016 and 2015 was $473,000 , $2.7 million and $5.6 million , respectively. A discount of $8.3 million was recognized for subordinated debentures assumed in the CBI acquisition, which will be amortized over their contractual term. The amortization of discount for the years ended December 31, 2017 , 2016 and 2015 was $329,000 , $275,000 and $176,000 , respectively.

Securities

Securities	12 Months Ended
	Dec. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Securities	Securities The following is a summary of securities available for sale as of December 31, 2017 and 2016: Amortized Gross Gross Estimated (In thousands) December 31, 2017 Mortgage-backed securities (1) $ 306,166 $ 145 $ 2,702 $ 303,609 Collateralized mortgage obligations (1) 119,658 8 1,898 117,768 U.S. government agency securities 7,499 — 85 7,414 Municipal bonds-tax exempt 125,601 1,943 69 127,475 U.S. treasury securities 152 — — 152 Mutual funds 22,916 — 530 22,386 Total securities available for sale $ 581,992 $ 2,096 $ 5,284 $ 578,804 December 31, 2016 Mortgage-backed securities (1) (2) $ 230,489 $ 598 $ 1,457 $ 229,630 Collateralized mortgage obligations (1) 77,447 6 1,002 76,451 U.S. government agency securities 7,499 — 58 7,441 SBA loan pool securities 4,356 — 210 4,146 Municipal bonds-tax exempt 159,789 236 1,995 158,030 Municipal bonds-taxable 13,391 319 9 13,701 Corporate bonds 5,010 5 — 5,015 U.S. treasury securities 156 — — 156 Mutual funds 22,916 — 522 22,394 Total securities available for sale $ 521,053 $ 1,164 $ 5,253 $ 516,964 (1) Collateralized by residential mortgages and guaranteed by U.S. government sponsored entities. The amortized cost and estimated fair value of securities as of December 31, 2017 , by contractual or expected maturity, are shown below. Collateralized mortgage obligations are included in the table shown below based on their expected maturities. Since mutual funds do not have contractual maturities and the Company intends to hold these securities for ten years or longer, they are included in the table shown below in the over ten years category. All other securities are included based on their contractual maturities. Available for Sale Amortized Estimated (In thousands) Within one year $ 16,951 $ 16,897 Over one year through five years 73,659 72,898 Over five years through ten years 252,829 251,681 Over ten years 238,553 237,328 Total $ 581,992 $ 578,804 FASB ASC 320, “ Investments – Debt and Equity Securities ,” requires us to periodically evaluate our investments for other-than-temporary impairment (“OTTI”). There was no OTTI charge during the year ended December 31, 2017 . Gross unrealized losses on securities available for sale, the estimated fair value of the related securities and the number of securities aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, were as follows as of December 31, 2017 and 2016 : Holding Period Less Than 12 Months 12 Months or More Total Gross Estimated Number of Gross Estimated Number of Gross Estimated Number of (In thousands, except number of securities) December 31, 2017 Mortgage-backed securities $ 1,855 $ 197,621 66 $ 847 $ 56,998 25 $ 2,702 $ 254,619 91 Collateralized mortgage obligations 773 65,726 20 1,125 49,986 32 1,898 115,712 52 U.S. government agency securities 15 1,484 1 70 5,930 2 85 7,414 3 Municipal bonds-tax exempt 48 11,541 6 21 2,737 2 69 14,278 8 Mutual funds — — — 530 22,382 6 530 22,382 6 Total $ 2,691 $ 276,372 93 $ 2,593 $ 138,033 67 $ 5,284 $ 414,405 160 December 31, 2016 Mortgage-backed securities $ 1,345 $ 102,647 38 $ 112 $ 11,350 3 $ 1,457 $ 113,997 41 Collateralized mortgage obligations 676 60,786 27 326 10,579 7 1,002 71,365 34 U.S. government agency securities 58 7,441 3 — — — 58 7,441 3 SBA loan pool securities — — — 210 4,146 2 210 4,146 2 Municipal bonds-tax exempt 1,995 125,004 54 — — — 1,995 125,004 54 Municipal bonds-taxable 9 2,904 2 — — — 9 2,904 2 Mutual funds 413 21,478 4 109 916 3 522 22,394 7 Total $ 4,496 $ 320,260 128 $ 757 $ 26,991 15 $ 5,253 $ 347,251 143 All individual securities that have been in a continuous unrealized loss position for 12 months or longer as of December 31, 2017 and December 31, 2016 had investment grade ratings upon purchase. The issuers of these securities have not established any cause for default on these securities and the various rating agencies have reaffirmed these securities’ long-term investment grade status as of December 31, 2017 and December 31, 2016 . These securities have fluctuated in value since their purchase dates as market interest rates have fluctuated. FASB ASC 320 requires other-than-temporarily impaired securities to be written down when fair value is below amortized cost in circumstances where: (1) an entity has the intent to sell a security; (2) it is more likely than not that an entity will be required to sell the security before recovery of its amortized cost basis; or (3) an entity does not expect to recover the entire amortized cost basis of the security. If an entity intends to sell a security or if it is more likely than not the entity will be required to sell the security before recovery, an OTTI write-down is recognized in earnings equal to the entire difference between the security’s amortized cost basis and its fair value. If an entity does not intend to sell the security or it is not more likely than not that it will be required to sell the security before recovery, the OTTI write-down is separated into an amount representing credit loss, which is recognized in earnings, and the amount related to all other factors, which is recognized in other comprehensive income. The Company does not intend to sell these securities and it is more likely than not that we will not be required to sell the investments before the recovery of its amortized cost basis. In addition, the unrealized losses on municipal and corporate bonds are not considered other-than-temporarily impaired, as the bonds are rated investment grade and there are no credit quality concerns with the issuers. Interest payments have been made as scheduled, and management believes this will continue in the future and that the bonds will be repaid in full as scheduled. Therefore, in management’s opinion, all securities that have been in a continuous unrealized loss position for the past 12 months or longer as of December 31, 2017 and December 31, 2016 were not other-than-temporarily impaired, and therefore, no impairment charges as of December 31, 2017 and December 31, 2016 were warranted. Realized gains and losses on sales of securities and proceeds from sales of securities were as follows for the periods indicated: Year Ended December 31, 2017 2016 2015 (In thousands) Gross realized gains on sales of securities $ 1,891 $ 396 $ 6,776 Gross realized losses on sales of securities (143 ) (350 ) (165 ) Net realized gains on sales of securities $ 1,748 $ 46 $ 6,611 Proceeds from sales of securities $ 97,271 $ 78,282 $ 456,098 For the year ended December 31, 2017 , there was a $1.7 million net gain in earnings resulting from the sale of securities that had previously been recognized as net unrealized losses of $1.3 million in comprehensive income. For the year ended December 31, 2016 , there was a $46 thousand net gain in earnings resulting from the redemption and sale of securities that had previously been recorded as net unrealized gains of $314 thousand in comprehensive income. Securities available for sale with market values of $130.1 million and $133.0 million as of December 31, 2017 and 2016 , respectively, were pledged to secure public deposits and for the FRB Discount Window as required or permitted by law.

Loans and Leases

Loans and Leases	12 Months Ended
	Dec. 31, 2017
Receivables [Abstract]
Loans and Leases	Loans and Leases The Board of Directors and management review and approve the Bank’s loan and lease policy and procedures on a regular basis to reflect issues such as regulatory and organizational structure changes, strategic planning revisions, concentrations of credit, loan and lease delinquencies and nonperforming loans and leases, problem loans and leases, and policy adjustments. Real estate loans are loans secured by liens or interest in real estate, to provide purchase, construction, and refinance on real estate properties. Commercial and industrial loans consist of commercial term loans, commercial lines of credit, and Small Business Administration (“SBA”) loans. Leases receivables include equipment finance agreements which are typically secured by the business assets being financed. Consumer loans consist of auto loans, credit cards, personal loans, and home equity lines of credit. We maintain management loan review and monitoring departments that review and monitor pass graded loans as well as problem loans to prevent further deterioration. Concentrations of Credit: The majority of the Bank’s loan and lease portfolio consists of commercial real estate, residential real estate and commercial and industrial loans. The Bank has been diversifying and monitoring commercial real estate loans based on property types, tightening underwriting standards, and portfolio liquidity and management, and has not exceeded certain specified limits set forth in the Bank’s loan and lease policy. Loans and leases receivable Loans and leases receivable consisted of the following as of the dates indicated: December 31, 2017 December 31, 2016 Non-PCI Loans and Leases PCI Loans Total Non-PCI Loans and Leases PCI Loans Total (In thousands) Real estate loans: Commercial property Retail $ 913,628 $ 1,645 $ 915,273 $ 857,629 $ 2,324 $ 859,953 Hotel/motel 679,683 1,642 681,325 649,540 1,618 651,158 Other (1) 1,413,852 3,421 1,417,273 1,367,776 4,759 1,372,535 Total commercial property loans 3,007,163 6,708 3,013,871 2,874,945 8,701 2,883,646 Construction 55,190 — 55,190 55,962 — 55,962 Residential property 520,902 951 521,853 337,791 976 338,767 Total real estate loans 3,583,255 7,659 3,590,914 3,268,698 9,677 3,278,375 Commercial and industrial loans: Commercial term 182,636 49 182,685 138,032 136 138,168 Commercial lines of credit 181,894 — 181,894 136,231 — 136,231 International loans 34,622 — 34,622 25,821 — 25,821 Total commercial and industrial loans 399,152 49 399,201 300,084 136 300,220 Leases receivable 297,284 — 297,284 243,294 — 243,294 Consumer loans (2) 17,019 40 17,059 22,830 50 22,880 Total loans and leases 4,296,710 7,748 4,304,458 3,834,906 9,863 3,844,769 Allowance for loan and lease losses (30,723 ) (320 ) (31,043 ) (31,458 ) (971 ) (32,429 ) Loans and leases receivable, net $ 4,265,987 $ 7,428 $ 4,273,415 $ 3,803,448 $ 8,892 $ 3,812,340 (1) Includes, among other property types, mixed-use, gas station, apartment, office, industrial, faith-based facilities and warehouse; the remaining real estate categories represents less than one percent of the Bank's total loans and leases. (2) Consumer loans include home equity lines of credit of $14.2 million and $17.7 million as of December 31, 2017 and 2016 , respectively. Accrued interest on loans and leases receivable was $10.2 million and $8.2 million at December 31, 2017 and 2016 , respectively. At December 31, 2017 and 2016 , loans and leases receivable totaling $1.1 billion and $1.0 billion , respectively, were pledged to secure advances from the FHLB. The following table details the information on the sales and reclassifications of SBA loans receivable to loans held for sale by portfolio segment for the years ended December 31, 2017 and 2016 : Real Estate Commercial and Total (In thousands) December 31, 2017 Balance at beginning of period $ 7,410 $ 1,906 $ 9,316 Origination of loans held for sale 70,710 38,401 109,111 Sales of loans held for sale (74,344 ) (37,633 ) (111,977 ) Principal payoffs and amortization (30 ) (26 ) (56 ) Balance at end of period $ 3,746 $ 2,648 $ 6,394 December 31, 2016 Balance at beginning of period $ 840 $ 2,034 $ 2,874 Origination of loans held for sale 65,416 25,951 91,367 Sales of loans held for sale (58,836 ) (26,065 ) (84,901 ) Principal payoffs and amortization (10 ) (14 ) (24 ) Balance at end of period $ 7,410 $ 1,906 $ 9,316 Allowance for Loan and Lease Losses Activity in the allowance for loan and lease losses and allowance for off-balance sheet items was as follows for the periods indicated: Non-PCI Loans and Leases PCI Loans Total As of and for the Year Ended December 31, 2017 (In thousands) Balance at beginning of period $ 31,458 $ 971 $ 32,429 Charge-offs (5,899 ) — (5,899 ) Recoveries on loans and leases previously charged off 3,682 — 3,682 Net loan and lease charge-offs (2,217 ) — (2,217 ) Loan and lease loss provision (income) 1,482 (651 ) 831 Balance at end of period $ 30,723 $ 320 $ 31,043 As of and for the Year Ended December 31, 2016 Balance at beginning of period $ 37,494 $ 5,441 $ 42,935 Charge-offs (3,736 ) (5,133 ) (8,869 ) Recoveries on loans and leases previously charged off 2,702 — 2,702 Net loan and lease charge-offs (1,034 ) (5,133 ) (6,167 ) Loan and lease loss provision (income) (5,002 ) 663 (4,339 ) Balance at end of period $ 31,458 $ 971 $ 32,429 As of and for the Year Ended December 31, 2015 Balance at beginning of period $ 51,640 $ 1,026 $ 52,666 Charge-offs (3,531 ) — (3,531 ) Recoveries on loans and leases previously charged off 5,423 — 5,423 Net loan and lease recoveries 1,892 — 1,892 Loan and lease loss provision (income) (16,038 ) 4,415 (11,623 ) Balance at end of period $ 37,494 $ 5,441 $ 42,935 The following table details the information on the allowance for loan and lease losses on non-PCI loans leases by portfolio segment for the years ended December 31, 2017 and 2016 : Real Estate Commercial Leases Receivable Consumer Unallocated Total (In thousands) December 31, 2017 Allowance for loan losses on non-PCI loans and leases: Beginning balance $ 25,212 $ 5,582 307 $ 191 $ 166 $ 31,458 Charge-offs (2,150 ) (2,516 ) (1,233 ) — — (5,899 ) Recoveries on loans and leases previously charged off 1,527 1,901 239 15 — 3,682 Loan and lease loss provision (income) (7,836 ) 2,392 6,966 (104 ) 64 1,482 Ending balance $ 16,753 $ 7,359 $ 6,279 $ 102 $ 230 $ 30,723 Ending balance: individually evaluated for impairment $ 2,093 $ 441 $ 3,334 $ 10 $ — $ 5,878 Ending balance: collectively evaluated for impairment $ 14,660 $ 6,918 $ 2,945 $ 92 $ 230 $ 24,845 Non-PCI loans and leases receivable: Ending balance $ 3,583,255 $ 399,152 $ 297,284 $ 17,019 $ — $ 4,296,710 Ending balance: individually evaluated for impairment $ 18,663 $ 3,040 $ 4,452 $ 1,029 $ — $ 27,184 Ending balance: collectively evaluated for impairment $ 3,564,592 $ 396,112 $ 292,832 $ 15,990 $ — $ 4,269,526 Allowance for loan losses on PCI loans: Beginning balance $ 922 $ 41 $ — $ 8 $ — $ 971 Provision (663 ) — — 12 — (651 ) Ending balance $ 259 $ 41 $ — $ 20 $ — $ 320 PCI loans receivable: Ending balance: acquired with deteriorated credit quality $ 7,659 $ 49 $ — $ 40 $ — $ 7,748 Real Estate Commercial and Industrial Leases Receivable Consumer Unallocated Total (In thousands) December 31, 2016 Allowance for loan losses on non-PCI loans and leases: Beginning balance $ 29,800 $ 7,081 — $ 242 $ 371 $ 37,494 Charge-offs (3,022 ) (706 ) (6 ) (2 ) — (3,736 ) Recoveries on loans and leases previously charged off 667 1,978 1 56 — 2,702 Loan and lease loss provision (income) (2,233 ) (2,771 ) 312 (105 ) (205 ) (5,002 ) Ending balance $ 25,212 $ 5,582 $ 307 $ 191 $ 166 $ 31,458 Ending balance: individually evaluated for impairment $ 3,980 $ 347 $ — $ — $ — $ 4,327 Ending balance: collectively evaluated for impairment $ 21,232 $ 5,235 $ 307 $ 191 $ 166 $ 27,131 Non-PCI loans and leases receivable: Ending balance $ 3,268,698 $ 300,084 $ 243,294 $ 22,830 $ — $ 3,834,906 Ending balance: individually evaluated for impairment $ 21,757 $ 4,174 $ — $ 419 $ — $ 26,350 Ending balance: collectively evaluated for impairment $ 3,246,941 $ 295,910 $ 243,294 $ 22,411 $ — $ 3,808,556 Allowance for loan losses on PCI loans: Beginning balance $ 5,397 $ 42 $ — $ 2 $ — $ 5,441 Charge-offs (5,133 ) — — — — (5,133 ) Provision 658 (1 ) — 6 — 663 Ending balance $ 922 $ 41 $ — $ 8 $ — $ 971 PCI loans receivable: Ending balance: acquired with deteriorated credit quality $ 9,677 $ 136 $ — $ 50 $ — $ 9,863 Loan Quality Indicators As part of the on-going monitoring of the quality of our loan and lease portfolio, we utilize an internal loan and lease grading system to identify credit risk and assign an appropriate grade (from 0 to (8)) for each and every loan or lease in our loan and lease portfolio. A third-party loan review is required on an annual basis. Additional adjustments are made when determined to be necessary. The loan and lease grade definitions are as follows: Pass and Pass-Watch: Pass and Pass-Watch loans and leases, grades (0-4), are in compliance with the Bank’s credit policy and regulatory requirements, and do not exhibit any potential or defined weaknesses as defined under “Special Mention,” “Substandard” or “Doubtful.” This category is the strongest level of the Bank’s loan and lease grading system. It consists of all performing loans and lease with no identified credit weaknesses. It includes cash and stock/security secured loans or other investment grade loans. Special Mention: A Special Mention loan or lease, grade (5), has potential weaknesses that deserve management’s close attention. If not corrected, these potential weaknesses may result in deterioration of the repayment of the debt and result in a Substandard classification. Loans and leases that have significant actual, not potential, weaknesses are considered more severely classified. Substandard: A Substandard loan or lease, grade (6), has a well-defined weakness that jeopardizes the liquidation of the debt. A loan or lease graded Substandard is not protected by the sound worth and paying capacity of the borrower, or of the value and type of collateral pledged. With a Substandard loan or lease, there is a distinct possibility that the Bank will sustain some loss if the weaknesses or deficiencies are not corrected. Doubtful: A Doubtful loan or lease, grade (7), is one that has critical weaknesses that would make the collection or liquidation of the full amount due improbable. However, there may be pending events which may work to strengthen the loan or lease, and therefore the amount or timing of a possible loss cannot be determined at the current time. Loss: A loan or lease classified as Loss, grade (8), is considered uncollectible and of such little value that their continuance as active bank assets is not warranted. This classification does not mean that the loan or lease has absolutely no recovery or salvage value, but rather it is not practical or desirable to defer writing off this asset even though partial recovery may be possible in the future. Loans and leases classified as Loss will be charged off in a timely manner. As of December 31, 2017 and 2016 , pass/pass-watch, special mention and classified (substandard and doubtful) loans and leases (excluding PCI loans), disaggregated by loan class, were as follows: Pass/Pass-Watch Special Mention Classified Total (In thousands) December 31, 2017 Real estate loans: Commercial property Retail $ 909,462 $ 454 $ 3,712 $ 913,628 Hotel/motel 667,085 4,880 7,718 679,683 Other 1,397,657 10,813 5,382 1,413,852 Construction 55,190 — — 55,190 Residential property 520,310 305 287 520,902 Total real estate loans 3,549,704 16,452 17,099 3,583,255 Commercial and industrial loans: Commercial term 179,835 439 2,362 182,636 Commercial lines of credit 181,462 250 182 181,894 International loans 34,622 — — 34,622 Leases receivable 292,832 — 4,452 297,284 Consumer loans 15,995 — 1,024 17,019 Total $ 4,254,450 $ 17,141 $ 25,119 $ 4,296,710 December 31, 2016 Real estate loans: Commercial property Retail $ 851,147 $ 2,275 $ 4,207 $ 857,629 Hotel/motel 634,397 5,497 9,646 649,540 Other 1,352,193 3,556 12,027 1,367,776 Construction 55,962 — — 55,962 Residential property 337,227 — 564 337,791 Total real estate loans 3,230,926 11,328 26,444 3,268,698 Commercial and industrial loans: Commercial term 133,811 2,060 2,161 138,032 Commercial lines of credit 135,699 464 68 136,231 International loans 23,406 2,415 — 25,821 Leases receivable 242,393 — 901 243,294 Consumer loans 22,139 — 691 22,830 Total $ 3,788,374 $ 16,267 $ 30,265 $ 3,834,906 The following is an aging analysis of gross loans and leases (excluding PCI loans), disaggregated by loan class, as of the dates indicated: 30-59 Days Past Due 60-89 Days Past Due 90 Days or More Past Due Total Past Due Current Total Accruing 90 Days or More Past Due (In thousands) December 31, 2017 Real estate loans: Commercial property Retail $ 96 $ 15 $ 196 $ 307 $ 913,321 $ 913,628 $ — Hotel/motel 3,421 — 398 3,819 675,864 679,683 — Other 1,245 1,333 467 3,045 1,410,807 1,413,852 — Construction — — — — 55,190 55,190 — Residential property 609 — — 609 520,293 520,902 — Total real estate loans 5,371 1,348 1,061 7,780 3,575,475 3,583,255 — Commercial and industrial loans: Commercial term 425 567 829 1,821 180,815 182,636 — Commercial lines of credit 250 — 182 432 181,462 181,894 — International loans — — — — 34,622 34,622 — Leases receivable 2,295 944 3,554 6,793 290,491 297,284 Consumer loans — — — — 17,019 17,019 — Total $ 8,341 $ 2,859 $ 5,626 $ 16,826 $ 4,279,884 $ 4,296,710 $ — December 31, 2016 Real estate loans: Commercial property Retail $ 9 $ 137 $ 234 $ 380 $ 857,249 $ 857,629 $ — Hotel/motel 1,037 46 600 1,683 647,857 649,540 — Other 677 722 1,237 2,636 1,365,140 1,367,776 — Construction — — — — 55,962 55,962 — Residential property 730 89 423 1,242 336,549 337,791 — Total real estate loans 2,453 994 2,494 5,941 3,262,757 3,268,698 — Commercial and industrial loans: Commercial term 484 42 111 637 137,395 138,032 — Commercial lines of credit — — — — 136,231 136,231 — International loans 80 — — 80 25,741 25,821 — Leases receivable 2,090 1,043 385 3,518 239,776 243,294 Consumer loans 170 — — 170 22,660 22,830 — Total $ 5,277 $ 2,079 $ 2,990 $ 10,346 $ 3,824,560 $ 3,834,906 $ — Impaired Loans Loans are considered impaired when: nonaccrual and principal or interest payments have been contractually past due for 90 days or more, unless the loan is both well-collateralized and in the process of collection; they are classified as TDR loans to offer terms not typically granted by the Bank; when current information or events make it unlikely to collect in full according to the contractual terms of the loan agreements; there is a deterioration in the borrower’s financial condition that raises uncertainty as to timely collection of either principal or interest; or full payment of both interest and principal is in doubt according to the original contractual terms. We evaluate loan impairment in accordance with GAAP. Impaired loans are measured 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, less costs to sell. If the measure of the impaired loan is less than the recorded investment in the loan, the deficiency will be charged off against the allowance for loan losses or, alternatively, a specific allocation will be established. Additionally, loans that are considered impaired are specifically excluded from the quarterly migration analysis when determining the amount of the allowance for loan losses required for the period. The allowance for collateral-dependent loans is determined by calculating the difference between the outstanding loan balance and the value of the collateral as determined by recent appraisals. The allowance for collateral-dependent loans varies from loan to loan based on the collateral coverage of the loan at the time of designation as nonperforming. We continue to monitor the collateral coverage, using recent appraisals, on these loans on a quarterly basis and adjust the allowance accordingly. The following table provides information on impaired loans (excluding PCI loans), disaggregated by loan class, as of the dates indicated : Recorded Unpaid Principal With No With an Related Average Interest (In thousands) As of or for The Year Ended December 31, 2017 Real estate loans: Commercial property Retail $ 1,403 $ 1,423 $ 1,246 $ 157 $ 1 $ 1,528 $ 106 Hotel/motel 6,184 7,220 2,144 4,040 1,677 6,080 431 Other 8,513 9,330 7,569 944 394 9,551 842 Residential property 2,563 2,728 824 1,739 21 2,771 122 Total real estate loans 18,663 20,701 11,783 6,880 2,093 19,930 1,501 Commercial and industrial loans: Commercial term 2,857 2,899 886 1,971 441 3,529 192 Commercial lines of credit 182 182 182 — — 685 16 International loans — — — — — — — Leases receivable 4,452 4,626 455 3,997 3,334 4,464 47 Consumer loans 1,029 1,215 919 110 10 982 33 Total $ 27,183 $ 29,623 $ 14,225 $ 12,958 $ 5,878 $ 29,590 $ 1,789 As of or for The Year Ended December 31, 2016 Real estate loans: Commercial property Retail $ 1,678 $ 1,684 $ 151 $ 1,527 $ 120 $ 2,243 $ 141 Hotel/motel 6,227 6,823 2,243 3,984 3,078 4,887 454 Other 11,054 11,900 8,111 2,943 782 11,935 1,326 Residential property 2,798 2,851 2,798 — — 2,656 112 Total real estate loans 21,757 23,258 13,303 8,454 3,980 21,721 2,033 Commercial and industrial loans: Commercial term 4,106 4,171 1,229 2,877 347 4,815 307 Commercial lines of credit 68 68 68 — — 45 14 International loans — — — — — 315 — Consumer loans 419 489 419 — — 622 29 Total $ 26,350 $ 27,986 $ 15,019 $ 11,331 $ 4,327 $ 27,518 $ 2,383 As of or for The Year Ended December 31, 2015 Real estate loans: Commercial property Retail $ 2,597 $ 2,892 $ 2,435 $ 162 $ 27 $ 3,878 $ 277 Hotel/motel 7,168 7,538 2,873 4,295 3,068 6,628 572 Other 14,681 16,625 11,619 3,062 759 17,334 1,231 Residential property 2,895 3,081 2,608 287 4 2,839 120 Total real estate loans 27,341 30,136 19,535 7,806 3,858 30,679 2,200 Commercial and industrial loans: Commercial term 5,257 5,621 1,858 3,399 457 6,637 368 Commercial lines of credit 381 493 280 101 100 1,515 42 International loans 1,215 1,215 647 568 30 1,257 — Consumer loans 1,665 1,898 1,665 — — 1,753 73 Total $ 35,859 $ 39,363 $ 23,985 $ 11,874 $ 4,445 $ 41,841 $ 2,683 The following is a summary of interest foregone on impaired loans (excluding PCI loans) for the periods indicated: Year Ended December 31, 2017 2016 2015 (In thousands) Interest income that would have been recognized had impaired loans performed in accordance with their original terms $ 2,575 $ 3,053 $ 4,168 Less: Interest income recognized on impaired loans (1,790 ) (2,383 ) (2,683 ) Interest foregone on impaired loans $ 785 $ 670 $ 1,485 There were no commitments to lend additional funds to borrowers whose loans are included above. Nonaccrual Loans and Leases Loans and leases are placed on nonaccrual status when, in the opinion of management, the full timely collection of principal or interest is in doubt. Generally, the accrual of interest is discontinued when principal or interest payments become more than 90 days past due, unless management believes the loan is adequately collateralized and in the process of collection. However, in certain instances, we may place a particular loan or lease on nonaccrual status earlier, depending upon the individual circumstances surrounding the loan or lease’s delinquency. When a loan or lease is placed on nonaccrual status, previously accrued but unpaid interest is reversed against current income. Subsequent collections of cash are applied as principal reductions when received, except when the ultimate collectability of principal is probable, in which case interest payments are credited to income. Nonaccrual loans and leases may be restored to accrual status when principal and interest payments become current and full repayment is expected. The following table details nonaccrual loans and leases (excluding PCI loans), disaggregated by loan class, as of the dates indicated: As of December 31, 2017 2016 (In thousands) Real estate loans: Commercial property Retail $ 224 $ 404 Hotel/motel 5,263 5,266 Other 2,462 3,058 Residential property 591 564 Total real estate loans 8,540 9,292 Commercial and industrial loans: Commercial term 1,710 824 Commercial lines of credit 182 — Leases receivable 4,452 901 Consumer loans 921 389 Total nonaccrual loans and leases $ 15,805 $ 11,406 The following table details nonperforming assets (excluding PCI loans) as of the dates indicated: As of December 31, 2017 2016 (In thousands) Nonaccrual loans and leases $ 15,805 $ 11,406 Loans and leases 90 days or more past due and still accruing — — Total nonperforming loans and leases 15,805 11,406 Other real estate owned 1,946 7,484 Total nonperforming assets $ 17,751 $ 18,890 As of December 31, 2017 , OREO consisted of six properties with a combined carrying value of $1.9 million , including $1.8 million of OREO properties acquired in the CBI acquisition or obtained as a result of PCI loan collateral foreclosures subsequent to the acquisition date. As of December 31, 2016 , OREO consisted of twelve properties with a combined carrying value of $7.5 million , including a $5.7 million of OREO properties acquired in the CBI acquisition or obtained as a result of PCI loan collateral foreclosures subsequent to the acquisition date. Troubled Debt Restructuring The following table details TDRs (excluding PCI loans), disaggregated by concession type and by loan type, as of December 31, 2017 , 2016 and 2015 : Nonaccrual TDRs Accrual TDRs Deferral of Deferral of Reduction of Extension of Total Deferral of Deferral of Reduction of Extension of Total (In thousands) December 31, 2017 Real estate loans: Commercial property Retail $ — $ — $ — $ — $ — $ — $ — $ 1,188 $ — $ 1,188 Hotel/motel 1,156 3,495 — — 4,651 — — 169 — 169 Other 779 266 64 — 1,109 2,777 — 30 959 3,766 Residential property — — — — — 632 — — 278 910 Total real estate loans 1,935 3,761 64 — 5,760 3,409 — 1,387 1,237 6,033 Commercial and industrial loans: Commercial term 131 123 1,173 102 1,529 6 182 503 427 1,118 Consumer loans 811 — — — 811 — — 108 — 108 Total $ 2,877 $ 3,884 $ 1,237 $ 102 $ 8,100 $ 3,415 $ 182 $ 1,998 $ 1,664 $ 7,259 December 31, 2016 Real estate loans: Commercial property Retail $ — $ — $ — $ — $ — $ — $ — $ 1,228 $ 1,228 Hotel/motel 1,292 3,722 — — 5,014 — — — — Other 387 651 143 — 1,181 4,012 286 1,344 5,642 Residential property — — 783 — 289 1,072 Total real estate loans 1,679 4,373 143 — 6,195 4,795 — 1,514 1,633 7,942 Commercial and industrial loans: Commercial term 149 71 69 419 708 22 198 2,135 662 3,017 Commercial lines of credit — — — — — 68 68 Consumer loans — — — 119 119 Total $ 1,828 $ 4,444 $ 212 $ 419 $ 6,903 $ 4,817 $ 198 $ 3,768 $ 2,363 $ 11,146 December 31, 2015 Real estate loans: Commercial property Retail $ — $ — $ — $ 344 $ 344 $ — $ — $ 1,227 $ — $ 1,227 Hotel/motel 1,216 28 — — 1,244 414 — — — 414 Other 959 1,301 216 8 2,484 3,537 — 322 1,378 5,237 Residential property 689 — — — 689 — — — 299 299 Total real estate loans 2,864 1,329 216 352 4,761 3,951 — 1,549 1,677 7,177 Commercial and industrial loans: Commercial term 45 — 997 679 1,721 40 214 1,673 945 2,872 Commercial lines of credit 222 — — 58 280 — — — — — Consumer loans — — 116 — 116 250 — — — 250 Total $ 3,131 $ 1,329 $ 1,329 $ 1,089 $ 6,878 $ 4,241 $ 214 $ 3,222 $ 2,622 $ 10,299 As of December 31, 2017 , 2016 and 2015 , total TDRs were $15.4 million , $18.0 million and $17.2 million , respectively. A debt restructuring is considered a TDR if we grant a concession that we would not have otherwise considered to the borrower, for economic or legal reasons related to the borrower’s financial difficulties. Loans are considered to be TDRs if they were restructured through payment structure modifications such as reducing the amount of principal and interest due monthly and/or allowing for interest only monthly payments for six months or less. All TDRs are impaired and are individually evaluated for specific impairment using one of these three criteria: (1) the present value of expected future cash flows discounted at the loan’s effective interest rate; (2) the loan’s observable market price; or (3) the fair value of the collateral if the loan is collateral dependent. At December 31, 2017 , 2016 and 2015 , TDRs, excluding loans held for sale, were subjected to specific impairment analysis, and we determined impairment allowances of $2.2 million , $3.4 million and $1.0 million , respectively, related to these loans which were included in the allowance for loan losses. The following table details TDRs (excluding PCI loans), disaggregated by loan class, for the years ended December 31, 2017 , 2016 and 2015 : December 31, 2017 December 31, 2016 December 31, 2015 Number of Pre- Post- Number of Pre- Post- Number of Pre- Post- (In thousands, except number of loans) Real estate loans: Commercial property Retail (1) — $ — $ — 1 $ 21 $ 23 1 $ 1,230 $ 1,227 Hotel/motel (2) 1 167 169 1 3,764 3,722 — — — Other (3) 1 15 15 — — — 2 725 724 Total real estate loans 2 182 184 2 3,785 3,745 3 1,955 1,951 Commercial and Industrial Loans: Commercial term (4) 1 123 123 5 403 331 10 973 801 Consumer loans (5) 1 820 811 — — — 1 250 250 Total TDRs 4 $ 1,125 $ 1,118 7 $ 4,188 $ 4,076 14 $ 3,178 $ 3,002 (1) Includes a modification of $23,000 through a reduction of principal or interest for the year ended December 31, 2016 , and a modification of $1.2 million through payment deferrals for the year ended December 31, 2015 . (2) Includes a modification of $169,000 through a reduction of principal or interest for the year ended December 31, 2017 , and a modification of $3.7 million through a payment deferral for the year ended December 31, 2016 . (3) Includes a modification of $15,000 through a payment deferral for the year ended December 31, 2017 , and modifications of $724,000 through payment deferrals for the year ended December 31, 2015 . (4) Includes a modification of $123,000 through a payment deferral for the year ended December 31, 2017 , and three modifications of $216,000 through payment deferrals, a modification of $65,000 through a reduction of principal or interest and a modification of $50,000 through an extension of maturity for the year ended December 31, 2016 . Includes modifications of $34,000 through payment deferrals, $60,000 through reductions of principal or interest and $707,000 through extensions of maturity for the year ended December 31, 2015 . (5) Includes a modification of $811,000 through a payment deferral for the year ended December 31, 2017 , and a modification of $250,000 through a payment deferral for the year ended December 31, 2015 . During the year ended December 31, 2017 , we restructured monthly payments on 4 loans, with a net carrying value of $1.1 million as of December 31, 2017 , through temporary payment structure modifications or re-amortization. For the restructured loans on accrual status, we determined that, based on the financial capabilities of the borrowers at the time of the loan restructuring and the borrowers’ past performance in the payment of debt service under the previous loan terms, performance and collection under the revised terms are probable. There were no TDRs for the year ended December December 31, 2017 that defaulted subsequent to the modifications occurring within the previous twelve months. The following table details TDRs (excluding PCI loans) that defaulted subsequent to the modifications occurring within the previous twelve months, disaggregated by loan class, for years ended December 31, 2016 and 2015 , respectively: For the Year Ended December 31, 2016 December 31, 2015 Number of Recorded Number of Recorded (In thousands, except number of loans) Real estate loans: Commercial property — — 1 412 Commercial and industrial loans: Commercial term 1 50 1 178 Total TDRs 1 $ 50 2 $ 590 Purchased Credit Impaired Loans As part of the acquisition of CBI, the Company purchased loans for which there was, at acquisition, evidence of deterioration of credit quality subsequent to origination and it was probable, at acquisition, that all contractually required payments would not be collected. The following table summarizes the changes in carrying value of PCI loans for the three-year period ended December 31, 2017 : For the Year Ended December 31, 2017 December 31, 2016 December 31, 2015 Carrying Amount Accretable Yield Carrying Amount Accretable Yield Carrying Accretable (In thousands) (In thousands) (In thousands) Beginning Balance $ 8,892 $ (5,677 ) $ 14,573 $ (5,944 ) $ 43,475 $ (11,025 ) Accretion 602 602 1,144 1,144 2,956 2,956 Payments received (2,827 ) — (7,138 ) — (31,215 ) — Disposal/transfers to OREO 110 — 977 — 3,772 — Change in expected cash flows, net — (410 ) — (877 ) — 2,125 Provision for credit losses 651 — (664 ) — (4,415 ) — Ending Balance $ 7,428 $ (5,485 ) $ 8,892 $ (5,677 ) $ 14,573 $ (5,944 ) As of December 31, 2017 and 2016, pass/pass-watch, special mention and classified (substandard and doubtful) PCI loans, disaggregated by loan class, were as follows: December 31, 2017 Pass/Pass-Watch Special Mention Classified Total Allowance Total (In thousands) Real estate loans: Commercial property Retail $ 220 $ — $ 1,425 $ 1,645 $ 31 $ 1,614 Hotel/motel 169 96 1,377 $ 1,642 129 1,513 Other 1 232 3,188 $ 3,421 16 3,405 Residential property 951 — — $ 951 83 868 Total real estate loans 1,341 328 5,990 7,659 259 7,400 Commercial and industrial loans: Commercial term — — 49 $ 49 41 8 Consumer loans — — 40 $ 40 20 20 Total PCI loans $ 1,341 $ 328 $ 6,079 $ 7,748 $ 320 $ 7,428 December 31, 2016 Pass/Pass-Watch Special Mention Classified Total Allowance Amount Total PCI Loans (In thousands) Real estate loans: Commercial property Retail $ — $ — $ 2,324 $ 2,324 $ 122 $ 2,202 Hotel/motel 177 — 1,441 $ 1,618 138 1,480 Other — 1,180 3,579 $ 4,759 590 4,169 Residential property 976 — — $ 976 72 904 Total real estate loans 1,153 1,180 7,344 9,677 922 8,755 Commercial and industrial loans: Commercial term — — 136 136 41 95 Consumer loans — — 50 50 8 42 Total PCI loans $ 1,153 $ 1,180 $ 7,530 $ 9,863 $ 971 $ 8,892 Loans accounted for as PCI are generally considered accruing and performing loans as the accretable discount is accreted to interest income over the estimated life of the loan when cash flows are reasonably estimable. Accordingly, PCI loans that are contractually past due are still considered to be accruing and performing loans. If the timing and amount of future cash flows is not reasonably estimable, the loans are classified as nonaccrual loans and interest income is not recognized until the timing and amount of future cash flows can be reasonably estimated. As of December 31, 2017 , we had no PCI loans on nonaccrual status and included in the delinquency table below. As of December 31, 2017 Pooled PCI Loans Non-pooled PCI Loans #Loans #Pools Carrying Amount (In thousands) % of total #Loans Carrying Amount (In thousands) % of total Total PCI Loans (In thousands) Real estate loans: Commercial property 40 7 $ 6,708 100 % — $ — — % $ 6,708 Construction — — — — % — — — % — Residential property — — — — % 1 951 100 % 951 Total real estate loans 40 7 6,708 87.6 % 1 951 12.4 % 7,659 Commercial and industrial loans 3 3 49 100 % — — — % 49 Consumer loans 1 1 3 7.5 % 1 37 92.5 % 40 Total acquired loans 44 11 $ 6,760 87.2 % 2 $ 988 12.8 % $ 7,748 Allowance for loan losses $ (218 ) $ (102 ) $ (320 ) Total carrying amount $ 6,542 $ 886 $ 7,428 As of December 31, 2016 Pooled PCI Loans Non-pooled PCI Loans #Loans #Pools Carrying Amount (In thousands) % of total #Loans Carrying Amount (In thousands) % of total Total PCI Loans (In thousands) Real estate loans: Commercial property 45 6 $ 7,780 89 % 1 $ 921 11 % $ 8,701 Construction — — — — % — — — % — Residential property — — — — % 2 976 100 % 976 Total real estate loans 45 6 7,780 80 % 3 1,897 20 % 9,677 Commercial and industrial loans 6 3 136 100 % — — — % 136 Consumer loans 1 1 50 100 % — — — % 50 Total acquired loans 52 10 $ 7,966 81 % 3 $ 1,897 19 % $ 9,863 Allowance for loan losses $ (617 ) $ (354 ) $ (971 ) Total carrying amount $ 7,349 $ 1,543 $ 8,892 The following table presents a summary of the borrowers’ underlying payment status of PCI loans as of the dates indicated: 30-59 Days Past Due 60-89 Days Past Due 90 Days or Total Past Due Current Total Allowance Total (In thousands) December 31, 2017 Real estate loans: Commercial property Retail $ — $ — $ 434 $ 43

Servicing Assets and Liabilitie

Servicing Assets and Liabilities (Notes)	12 Months Ended
	Dec. 31, 2017
Transfers and Servicing [Abstract]
Servicing of Assets and Liabilities	Servicing Assets and Liabilities The changes in servicing assets and liabilities for the years ended December 31, 2017 and 2016 were as follows: As of December 31, 2017 2016 (In thousands) Servicing assets: Balance at beginning of period $ 10,564 $ 11,744 Addition related to sale of SBA loans 2,590 2,184 Amortization (3,266 ) (3,364 ) Reversal of allowance 330 — Balance at end of period $ 10,218 $ 10,564 Servicing liabilities: Balance at beginning of period $ 3,143 $ 4,784 Amortization (859 ) (1,641 ) Reversal of allowance (67 ) — Balance at end of period $ 2,217 $ 3,143 At December 31, 2017 and 2016 , we serviced the loans sold to unaffiliated parties in the amount of $476.5 million and $484.7 million , respectively. These represent loans that have been sold for which the Bank continues to provide servicing. These loans are maintained off balance sheet and are not included in the loans receivable balance. All of the loans being serviced were SBA loans. The Company recorded servicing fee income of $4.7 million , $4.7 million and $4.6 million for the years ended December 31, 2017, 2016 and 2015, respectively. Net amortization expense was $2.4 million , $1.7 million and $3.1 million for the years ended December 31, 2017, 2016 and 2015, respectively. Servicing fee income, net of amortization of servicing assets and liabilities, is included in other operating income in the consolidated statements of income.

Premises and Equipment

Premises and Equipment	12 Months Ended
	Dec. 31, 2017
Property, Plant and Equipment [Abstract]
Premises and Equipment	Premises and Equipment The following is a summary of the major components of premises and equipment: As of December 31, 2017 2016 (In thousands) Land $ 8,470 $ 8,750 Building and improvements 17,261 18,313 Furniture and equipment 21,271 20,668 Leasehold improvements 11,571 11,833 Leased equipment 879 880 59,452 60,444 Accumulated depreciation and amortization (32,797 ) (31,383 ) Impairment reserve — (363 ) Total premises and equipment, net $ 26,655 $ 28,698 Depreciation and amortization expense related to premises and equipment was $2.9 million , $2.9 million and $3.1 million for the years ended December 31, 2017 , 2016 and 2015 , respectively.

Goodwill and Other Intangibles

Goodwill and Other Intangibles	12 Months Ended
	Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangibles	Goodwill and other intangibles The third-party originators intangible of $483,000 and goodwill of $11.0 million was recorded as a result of the acquisition of the leasing portfolio on October 27, 2016. The CDI of $2.2 million was recognized for the core deposits acquired from CBI merger at August 31, 2014. Company's intangible assets were as follows for the periods indicated: December 31, 2017 December 31, 2016 Amortization Gross Accumulated Net Gross Accumulated Net (In thousands) Core deposit intangible 10 years $ 2,213 $ (1,119 ) $ 1,094 $ 2,213 $ (838 ) $ 1,375 Third-party originators intangible 7 years $ 483 $ (64 ) $ 419 $ 483 $ — $ 483 Goodwill N/A $ 11,031 $ — $ 11,031 $ 11,031 $ — $ 11,031 Total intangible assets $ 13,727 $ (1,183 ) $ 12,544 $ 13,727 $ (838 ) $ 12,889 Intangibles amortization expense for the years ended December 31, 2017 , 2016 and 2015 was $345,000 , $326,000 and $379,000 , respectively, and estimated future amortization expense related to CDI and the third-party originators intangible for each of the next five years is as follows: Year Ending December 31, Amount (In thousands) 2018 $ 362 2019 309 2020 261 2021 216 2022 171 Thereafter 194 The Company performed its annual goodwill impairment test in the fourth quarter of 2017 and determined no impairment existed as of December 31, 2017 . As of December 31, 2017 , management was not aware of any circumstances that would indicate impairment of goodwill or other intangible assets. There were no impairment charges related to intangible assets recorded through earnings in 2017 or 2016 .

Deposits

Deposits	12 Months Ended
	Dec. 31, 2017
Banking and Thrift [Abstract]
Deposits	Deposits At December 31, 2017 , the scheduled maturities of time deposits are as follows: Year Ending December 31, Time Deposits of $250,000 or More Other Time Deposits Total (In thousands) 2018 $ 364,225 $ 872,155 $ 1,236,380 2019 94,735 45,792 140,527 2020 1,619 21,576 23,195 2021 1,650 12,935 14,585 2022 — 1,645 1,645 Total $ 462,229 $ 954,103 $ 1,416,332 A summary of interest expense on deposits was as follows for the periods indicated: Year Ended December 31, 2017 2016 2015 (In thousands) Demand – interest-bearing $ 74 $ 75 $ 114 Money market and savings 12,515 6,470 4,195 Time deposits of $100,000 or more 10,471 6,605 6,639 Other time deposits 3,029 3,420 4,462 Total interest expense on deposits $ 26,089 $ 16,570 $ 15,410 Accrued interest payable on deposits totaled $5.3 million and $2.6 million at December 31, 2017 and 2016 , respectively. Total deposits reclassified to loans due to overdrafts at December 31, 2017 and 2016 were $1.5 million and $1.2 million , respectively.

Borrowings

Borrowings	12 Months Ended
	Dec. 31, 2017
Federal Home Loan Banks [Abstract]
Borrowings	Borrowings Borrowings consisted of the following: As of December 31, 2017 2016 (In thousands) FHLB advances $ 150,000 $ 315,000 Total FHLB advances $ 150,000 $ 315,000 FHLB advances represent collateralized obligations with the FHLB. The following is a summary of contractual maturities pertaining to FHLB advances: Year of Maturity Amount Weighted- (In thousands) 2018 $ 150,000 1.41 % Total $ 150,000 1.41 % The following is financial data pertaining to overnight FHLB advances: As of December 31, 2017 2016 2015 (In thousands) Weighted-average interest rate at end of year 1.41 % 0.55 % 0.27 % Weighted-average interest rate during the year 0.90 % 0.45 % 0.20 % Average balance of FHLB advances $ 119,041 $ 196,708 $ 38,110 Maximum amount outstanding at any month-end $ 330,000 $ 320,000 $ 180,000 We have pledged loans receivable with market values of $1.1 billion as collateral with the FHLB for this borrowing facility. The total borrowing capacity available from the collateral that has been pledged is $802.9 million , of which $652.9 million remained available as of December 31, 2017 . At December 31, 2017 , we had $8.5 million available for use through the Fed Discount Window, as we pledged securities with carrying values of $9.0 million , and there were no borrowings. At December 31, 2017 , advances from the FHLB were $150.0 million , a decrease of $165.0 million from $315.0 million at December 31, 2016 , and all FHLB advances were overnight borrowings at December 31, 2017 . For the years ended December 31, 2017 , 2016 and 2015 interest expense on FHLB advances were $1.1 million , $879,000 and $76,000 , respectively, and the weighted-average interest rates were 0.90 percent , 0.45 percent and 0.20 percent , respectively.

Subordinated Debentures

Subordinated Debentures	12 Months Ended
	Dec. 31, 2017
Debt Disclosure [Abstract]
Subordinated Debentures	Subordinated Debentures The Company issued Fixed-to-Floating Subordinated Notes (“Notes”) of $100 million on March 21, 2017, with a final maturity on March 30, 2027. The Notes will bear interest at an initial fixed rate of 5.45% per annum, payable semi-monthly on March 30 and September 30 of each year, commencing on September 30, 2017. From and including March 30, 2022 and thereafter, the Notes will bear interest at a floating rate equal to the then current three-month LIBOR, as calculated on each applicable date of determination, plus 3.315% payable quarterly. If the then current three-month LIBOR is less than zero, three-month LIBOR will be deemed to be zero. Debt issuance cost was $2.2 million , which is being amortized through the Note's maturity date. At December 31, 2017, the balance of Notes included in the Company's consolidated balance sheet, net of debt issuance cost, was $98.0 million . The amortization of debt issuance cost was $ 134,000 for the year ended December 31, 2017. The Company assumed CBI’s Junior Subordinated Deferrable Interest Debentures (“Subordinated Debentures”) with an unpaid principal balance of $26.8 million and an estimated fair value of $18.5 million . The $8.3 million discount will be amortized to interest expense over the remaining term. CBI formed a trust and issued $26.0 million of Trust Preferred Securities (“TPS”) that now have a variable rate of interest at the 3 month LIBOR plus 140 basis points and invested the proceeds in Subordinated Debentures. The Subordinated Debentures will mature on December 31, 2035 , however, the Bank may redeem the Subordinated Debentures at an earlier date if certain conditions are met. The TPS will be subject to mandatory redemption if the Subordinated Debentures are repaid by the Company. Interest is payable quarterly , and the Company has the option to defer interest payments on the Subordinated Debentures from time to time for a period not to exceed five consecutive years. The discount amortization was $329,000 , $275,000 and $176,000 for the years ended December 31, 2017 , 2016 and 2015, respectively.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes In accordance with the provisions of FASB ASC 740, the Company periodically reviews its income tax positions based on tax laws and regulations and financial reporting considerations, and records adjustments as appropriate. This review takes into consideration the status of current taxing authorities’ examinations of the Company’s tax returns, recent positions taken by the taxing authorities on similar transactions, if any, and the overall tax environment. A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows: Year Ended December 31, 2017 2016 2015 (In thousands) Unrecognized tax benefits at beginning of year $ 1,039 $ 934 $ 1,765 Gross increases for tax positions of prior years — 105 — Lapse of statute of limitations — — (831 ) Unrecognized tax benefits at end of year $ 1,039 $ 1,039 $ 934 The total amount of unrecognized tax benefits that would affect our effective tax rate if recognized was $1.0 million , $1.0 million and $0.9 million as of December 31, 2017 , 2016 and 2015 , respectively. For the year ended December 31, 2017 , unrecognized tax benefits in connection with California Enterprise Zone interest deductions did not change. For the year ended December 31, 2016 , unrecognized tax benefits increased by $105,000 in connection with California Enterprise Zone interest deductions. For the year ended December 31, 2015 , unrecognized tax benefits decreased by $831,000 in connection with the tax position taken on expense related to Section 195 and FRB Stock dividend. In 2017 , 2016 and 2015 , the Company accrued interest of $34,000 , $33,000 and $20,000 for uncertain tax benefits, respectively. As of December 31, 2017 , 2016 and 2015 , the total amounts of accrued interest related to uncertain tax positions, net of federal tax benefit, were $132,000 , $101,000 and $67,000 , respectively. We account for interest and penalties related to uncertain tax positions as part of our provision for federal and state income taxes. Accrued interest and penalties are included within the related tax liability line on the Consolidated Balance Sheets. Unrecognized tax benefit primarily includes state exposures from California Enterprise Zone interest deductions. We do not anticipate any material change in the total amount of unrecognized tax benefits to occur within the next twelve months. As of December 31, 2017 , the Company was subject to examination by various federal and state tax authorities for the years ended December 31, 2008 through 2017 . As of December 31, 2017 , the Company was subjected to audit or examination by Internal Revenue Service for the 2013 and 2014 tax years and California Franchise Tax Board for the 2008 and 2009 tax years. Management does not anticipate any material changes in our financial statements due to the result of the audits. The Company adopted ASU 2016-09, Compensation - Stock Compensation . In accordance with this standard the Company recognizes excess tax benefits as income tax expense or benefit in the income statement. During 2017 and 2016, the Company recognized $1.8 million and $614,000 , respectively, of income tax deductions due to excess tax benefits arising from exercises and vesting. A summary of the provision for income taxes was as follows: Year Ended December 31, 2017 2016 2015 (In thousands) Current expense: Federal $ 20,924 $ 19,802 $ 14,755 State 6,804 6,503 5,084 Total current expense 27,728 26,305 19,839 Deferred expense (benefit): Federal 14,623 4,410 13,663 State (1,727 ) 2,184 4,680 Total deferred expense 12,896 6,594 18,343 Provision for income taxes $ 40,624 $ 32,899 $ 38,182 Deferred tax assets and liabilities were as follows: Year Ended December 31, 2017 2016 2015 (In thousands) Deferred tax assets: Allowance for loan and lease losses $ 9,282 $ 13,932 $ 18,205 Depreciation 192 — — Purchase accounting 4,685 7,492 13,156 Net operating loss carryforward 18,648 16,876 21,511 Unrealized loss on securities available for sale 919 1,695 859 Indemnified assets 701 1,441 152 Tax credit 1,241 3,516 3,939 State taxes 1,489 2,231 1,539 Other 3,724 5,726 5,040 Total deferred tax assets 40,881 52,909 64,401 Deferred tax liabilities: Mark to market (4,879 ) (3,960 ) (10,469 ) Depreciation — (396 ) (705 ) Other (797 ) (1,190 ) (1,132 ) Total deferred tax liabilities (5,676 ) (5,546 ) (12,306 ) Valuation Allowance (2,750 ) (1,031 ) — Net deferred tax assets $ 32,455 $ 46,332 $ 52,095 As of December 31, 2017 the Company's net deferred tax assets, which primarily consists of net operating loss carryforwards and the allowance for loan and lease losses, decreased by $13.9 million from 2016 primarily due to the reduction in the allowance for loan and lease losses, tax credits and the impact of the reduction to the federal tax rate resulting from the Tax Act. As of December 31, 2016, the Company’s net deferred tax assets decreased by $ 5.8 million from 2015 due mainly to the reduction in the allowance for loan and lease losses, net operating loss carryforwards and purchase accounting, offset by a reduction in mark to market. As of each reporting date, management considers the realization of deferred tax assets based on management’s judgment of various future events and uncertainties, including the timing and amount of future income, as well as the implementation of various tax planning strategies to maximize realization of deferred tax assets. A valuation allowance is provided when it is more likely than not that some portion of deferred tax assets will not be realized. As of December 31, 2017 , management determined that a valuation allowance of $2.8 million was appropriate against certain state net operating losses and certain tax credits. For all other deferred tax assets, management believes it was more likely than not that these deferred tax assets will be realized principally through future taxable income and reversal of existing taxable temporary differences. As of December 31, 2016, management determined a valuation allowance of $1.0 million was appropriate against certain state net operating losses and certain tax credits. As of December 31, 2017 , the Company had net operating loss carryforwards of $223.0 million state income tax purposes, which are available to offset future taxable income, if any, through 2033 . As of December 31, 2017 , the Company had federal and state low income housing tax credit carryforwards of approximately $1.0 million and $200,000 , respectively. The federal low income housing tax credits carry forward through 2031 and the state low income housing tax credits carry forward indefinitely. Reconciliation between the federal statutory income tax rate and the effective tax rate is shown in the following table: Year Ended December 31, 2017 2016 2015 Federal statutory income tax rate 35.00 % 35.00 % 35.00 % State taxes, net of federal tax benefits 6.64 % 7.04 % 8.32 % Tax-exempt municipal securities (0.24 )% (0.26 )% (0.26 )% Tax credit - federal (2.37 )% (2.50 )% (2.51 )% Federal rate adjustment, net of federal benefit of state 4.18 % — % — % Other (0.58 )% (2.48 )% 0.95 % Effective tax rate 42.63 % 36.80 % 41.50 % The Tax Cuts and Jobs Act (the “Tax Act”) was enacted into U.S. tax law on December 22, 2017. The Tax Act makes numerous changes to the U.S. tax code, including (although not limited to) reducing the U.S. federal corporate tax rate to 21 percent, eliminating the corporate alternative minimum tax (AMT), limiting deductible interest expense, increasing limitations on certain executive compensation, and enhancing bonus depreciation to provide for full expensing of qualified property. On that same date, the SEC staff also issued Staff Accounting Bulletin ("SAB") 118, which provided guidance regarding financial statement accounting of the tax effects of the Tax Act. SAB 118 provides for the completion of the accounting related effects of the Tax Act in accordance with a measurement period of one year from the Tax Act enactment date. Those aspects of the Tax Act for which the accounting under ASC 740 is complete is to be reflected in the financial statements under SAB 118. To the extent that the company's accounting for certain income taxes effects of the Tax Act is incomplete, however where a reasonable estimate is determinable, SAB 118 provides that a provisional estimate should be included in the financial statements. Finally, if a provisional estimate cannot be determined, a company should continue to apply ASC 740 based on the tax laws that were in effect immediately before the enactment of the Tax Act. The amounts described below are subject to revisions as the Company completes its analysis of the Tax Act, collects and prepares necessary data, and interprets any additional guidance issued by the U.S. Treasury Department, Internal Revenue Service, or IRS, FASB, and other standard- setting and regulatory bodies. For certain of its deferred tax assets and liabilities, the Company has recorded a decrease of $3.9 million , with a corresponding net adjustment to deferred income tax expense of $3.9 million for the year ended December 31, 2017, which relates to the remeasurement of deferred balances for the reduction in US federal corporate tax rate.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	12 Months Ended
	Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) Activity in accumulated other comprehensive income for the year ended December 31, 2017 , 2016 and 2015 was as follows: Unrealized Gains Unrealized Gains Tax Benefit Total (In thousands) For the year ended December 31, 2017 Balance at beginning of period $ (4,089 ) $ — $ 1,695 $ (2,394 ) Other comprehensive loss before reclassification 2,649 — (376 ) $ 2,273 Reclassification from accumulated other comprehensive loss (1,748 ) — — $ (1,748 ) Period change 901 — (376 ) $ 525 Balance at end of period $ (3,188 ) $ — $ 1,319 $ (1,869 ) For the year ended December 31, 2016 Balance at beginning of period $ (2,331 ) $ 9 $ 2,007 $ (315 ) Other comprehensive loss before reclassification (1,712 ) (9 ) (312 ) $ (2,033 ) Reclassification from accumulated other comprehensive income (46 ) — — $ (46 ) Period change (1,758 ) (9 ) (312 ) (2,079 ) Balance at end of period $ (4,089 ) $ — $ 1,695 $ (2,394 ) For the year ended December 31, 2015 Balance at beginning of period $ (985 ) $ 16 $ 1,432 $ 463 Other comprehensive (loss) income before reclassification 5,265 (7 ) 575 $ 5,833 Reclassification from accumulated other comprehensive loss (6,611 ) — $ (6,611 ) Period change (1,346 ) (7 ) 575 (778 ) Balance at end of period $ (2,331 ) $ 9 $ 2,007 $ (315 ) For the year ended December 31, 2017, there was a $1.7 million reclassification from accumulated other comprehensive income to gains in earnings resulting from the redemption and sale of available-for-sale securities. The $1.7 million reclassification adjustment out of accumulated other comprehensive income was included in net gain on sales of securities in noninterest income. Net unrealized losses of $1.3 million related to these sold securities had previously been recorded in accumulated other comprehensive income or loss. For the year ended December 31, 2016, there was a $46 thousand reclassification from accumulated other comprehensive income to gains in earnings resulting from the redemption and sale of available-for-sale securities. The $46 thousand reclassification adjustment out of accumulated other comprehensive income was included in net gain on sales of securities in noninterest income. Net unrealized gains of $314 thousand related to these sold securities had previously been recorded in accumulated other comprehensive income. For the year ended December 31, 2015, there was a $6.6 million reclassification from accumulated other comprehensive income or loss to gains in earnings resulting from the redemption and sale of available-for-sale securities. The $6.6 million reclassification adjustment out of accumulated other comprehensive income was included in net gain on sales of securities in noninterest income. Net unrealized losses of $1.9 million related to these sold securities had previously been recorded in accumulated other comprehensive income.

Regulatory Matters

Regulatory Matters	12 Months Ended
	Dec. 31, 2017
Banking and Thrift [Abstract]
Regulatory Matters	Regulatory Matters Risk-Based Capital Federal bank regulatory agencies require bank holding companies and banks to maintain a minimum ratio of qualifying total capital to risk-weighted assets of 8.0 percent and a minimum ratio of Tier 1 capital to risk-weighted assets of 6.0 percent. In addition to the risk-based guidelines, federal bank regulatory agencies require bank holding companies and banks to maintain a minimum ratio of Tier 1 capital to average assets, referred to as the leverage ratio, of 4.0 percent. In order for banks to be considered “well capitalized,” federal bank regulatory agencies require them to maintain a minimum ratio of qualifying total capital to risk-weighted assets of 10.0 percent and a minimum ratio of Tier 1 capital to risk-weighted assets of 8.0 percent. In addition to the risk-based guidelines, federal bank regulatory agencies require depository institutions to maintain a minimum ratio of Tier 1 capital to average assets, referred to as the leverage ratio, of 5.0 percent. At December 31, 2017, the Bank’s capital ratios exceeded the minimum requirements to place the Bank in the “well capitalized” category and the Company exceeded all of its applicable minimum regulatory capital ratio requirements. In July 2013, the Board of Governors of the Federal Reserve, the Office of the Comptroller of the Currency and the FDIC approved the Basel III regulatory capital framework and related changes under the Dodd-Frank Wall Street Reform and Consumer Protection Act. The rules revised minimum capital requirements and adjusted prompt corrective action thresholds. The rules also revised the regulatory capital elements, added a new common equity Tier I capital ratio, and increased the minimum Tier I capital ratio requirement. The revisions permit banking organizations to retain, through a one-time election, the existing treatment for accumulated other comprehensive income. Basel III rules, including certain transitional provisions, became effective January 1, 2015, and its requirements are included in the capital ratios presented in the table shown below. In addition, a new capital conservation buffer of 2.5% began to be phased in effective January 1, 2016 through January 1, 2019, and must be met to avoid limitations on the ability of the Bank to pay dividends, repurchase shares or pay discretionary bonuses. In January 2016, the new capital conservation buffer requirement was 0.625% of risk-weighted assets and will increase each year until fully implemented in January 2019. The Bank's capital conservation buffer was 6.55% and 5.64% and the Company's capital conservation buffer was 7.20% and 5.86% as of December 31, 2017 and 2016, respectively. The capital ratios of Hanmi Financial and the Bank as of December 31, 2017 and 2016 were as follows: Actual Minimum Minimum to Be Amount Ratio Amount Ratio Amount Ratio (In thousands) December 31, 2017 Total capital (to risk-weighted assets): Hanmi Financial $ 684,272 15.50 % $ 353,171 8.00 % N/A N/A Hanmi Bank $ 670,896 15.20 % $ 353,091 8.00 % $ 441,364 10.00 % Tier 1 capital (to risk-weighted assets): Hanmi Financial $ 553,970 12.55 % $ 264,878 6.00 % N/A N/A Hanmi Bank $ 638,557 14.47 % $ 264,818 6.00 % $ 353,091 8.00 % Common equity Tier 1 capital (to risk-weighted assets): Hanmi Financial $ 537,950 12.19 % $ 198,658 4.50 % N/A N/A Hanmi Bank $ 638,557 14.47 % $ 198,614 4.50 % $ 286,886 6.50 % Tier 1 capital (to average assets): Hanmi Financial $ 553,970 10.79 % $ 205,344 4.00 % N/A N/A Hanmi Bank $ 638,557 12.44 % $ 205,385 4.00 % $ 256,731 5.00 % December 31, 2016 Total capital (to risk-weighted assets): Hanmi Financial $ 554,089 13.86 % $ 319,901 8.00 % N/A N/A Hanmi Bank $ 544,759 13.64 % $ 319,520 8.00 % $ 399,399 10.00 % Tier 1 capital (to risk-weighted assets): Hanmi Financial $ 520,477 13.02 % $ 239,926 6.00 % N/A N/A Hanmi Bank $ 511,146 12.80 % $ 239,640 6.00 % $ 319,520 8.00 % Common equity Tier 1 capital (to risk-weighted assets): Hanmi Financial $ 509,239 12.73 % $ 179,944 4.50 % N/A N/A Hanmi Bank $ 511,146 12.80 % $ 179,730 4.50 % $ 259,610 6.50 % Tier 1 capital (to average assets): Hanmi Financial $ 520,477 11.53 % $ 180,581 4.00 % N/A N/A Hanmi Bank $ 511,146 11.33 % $ 180,411 4.00 % $ 225,514 5.00 %

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2017
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements Fair Value Measurements Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. The three-level fair value hierarchy requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The three levels of inputs that may be used to measure fair value are defined as follows: • Level 1 - Quoted prices (unadjusted) for identical assets or liabilities in active markets that the entity has the ability to access as of the measurement date. • Level 2 - Significant other observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities, quoted prices in markets that are not active, and other inputs that are observable or can be corroborated by observable market data. • Level 3 - Significant unobservable inputs that reflect a company’s own assumptions about the assumptions that market participants would use in pricing an asset or liability. Fair value is used on a recurring basis for certain assets and liabilities in which fair value is the primary basis of accounting. Additionally, fair value is used on a non-recurring basis to evaluate assets or liabilities for impairment or for disclosure purposes. We record securities available for sale at fair value on a recurring basis. Certain other assets, such as loans held for sale, impaired loans, OREO, goodwill and other intangible assets, are recorded at fair value on a non-recurring basis. Non-recurring fair value measurements typically involve assets that are periodically evaluated for impairment and for which any impairment is recorded in the period in which the re-measurement is performed. The following methods and assumptions were used to estimate the fair value of each class of financial instrument below: Securities available for sale - The fair values of securities available for sale are determined by obtaining quoted prices on nationally recognized securities exchanges. If quoted prices are not available, fair values are measured using matrix pricing, which is a mathematical technique used widely in the industry to value debt securities without relying exclusively on quoted prices for the specific securities but rather by relying on the securities’ relationship to other benchmark quoted securities, or other model-based valuation techniques requiring observable inputs other than quoted prices such as yield curve, prepayment speeds, and default rates. Level 1 securities include U.S. treasury securities and mutual funds that are traded on an active exchange or by dealers or brokers in active over-the-counter markets. The fair value of these securities is determined by quoted prices on an active exchange or over-the-counter market. Level 2 securities primarily include mortgage-backed securities, collateralized mortgage obligations, U.S. government agency securities, SBA loan pool securities, municipal bonds and corporate bonds in markets that are not active. In determining the fair value of the securities categorized as Level 2, we obtain reports from nationally recognized broker-dealers detailing the fair value of each investment security held as of each reporting date. The broker-dealers use prices obtained from nationally recognized pricing services to value our fixed income securities. The fair value of the municipal bonds is determined based on a proprietary model maintained by the broker-dealers. We review the prices obtained for reasonableness based on our understanding of the marketplace, and also consider any credit issues related to the bonds. As we have not made any adjustments to the market quotes provided to us and as they are based on observable market data, they have been categorized as Level 2 within the fair value hierarchy. Level 3 securities are instruments that are not traded in the market. As such, no observable market data for the instrument is available, which necessitates the use of significant unobservable inputs. Loans held for sale – All loans held for sale are SBA loans carried at the lower of cost or fair value. Management obtains quotes, bids or pricing indication sheets on all or part of these loans directly from the purchasing financial institutions. Premiums received or to be received on the quotes, bids or pricing indication sheets are indicative of the fact that cost is lower than fair value. At December 31, 2017 and 2016 , the entire balance of SBA loans held for sale was recorded at its cost. We record SBA loans held for sale on a nonrecurring basis with Level 2 inputs. Impaired loans (excluding PCI loans) – Nonaccrual loans and performing restructured loans are considered impaired for reporting purposes and are measured and recorded at fair value on a non-recurring basis. Nonaccrual Non-PCI loans with an unpaid principal balance over $ 100,000 and all performing restructured loans are reviewed individually for the amount of impairment, if any. Nonaccrual Non-PCI loans with an unpaid principal balance of $ 100,000 or less are evaluated for impairment collectively. The Company does not record loans at fair value on a recurring basis. However, from time to time, nonrecurring fair value adjustments to collateral dependent impaired loans are recorded based on either the current appraised value of the collateral, a Level 2 measurement, or management’s judgment and estimation of value reported on older appraisals that are then adjusted based on recent market trends, a Level 3 measurement. OREO – Fair value of OREO is based primarily on third party appraisals, less costs to sell and result in a Level 2 classification of the inputs for determining fair value. Appraisals are required annually and may be updated more frequently as circumstances require and the fair value adjustments are made to OREO based on the updated appraised value of the property. Nonperforming loans held for sale – We reclassify certain nonperforming loans as held for sale when we decide to sell those loans. The fair value of nonperforming loans held for sale is generally based upon the quotes, bids or sales contract prices which approximate their fair value. Nonperforming loans held for sale are recorded at estimated fair value less anticipated liquidation cost. As of December 31, 2017 and 2016 , we did not have nonperforming loans held for sale, which are measured on a nonrecurring basis with Level 2 inputs. Assets and Liabilities Measured at Fair Value on a Recurring Basis As of December 31, 2017 and 2016 , assets and liabilities measured at fair value on a recurring basis are as follows: Level 1 Level 2 Level 3 Quoted Prices in Significant Significant Balance (In thousands) December 31, 2017 Assets: Securities available for sale: Mortgage-backed securities $ — $ 303,609 $ — $ 303,609 Collateralized mortgage obligations — 117,768 — 117,768 U.S. government agency securities — 7,414 — 7,414 Municipal bonds-tax exempt — 127,475 — 127,475 U.S. treasury securities 152 — — 152 Mutual funds 22,386 — — 22,386 Total securities available for sale $ 22,538 $ 556,266 $ — $ 578,804 December 31, 2016 Assets: Securities available for sale: Mortgage-backed securities $ — $ 229,630 $ — $ 229,630 Collateralized mortgage obligations — 76,451 — 76,451 U.S. government agency securities — 7,441 — 7,441 SBA loan pools securities — 4,146 — 4,146 Municipal bonds-tax exempt — 158,030 — 158,030 Municipal bonds-taxable — 13,701 — 13,701 Corporate bonds — 5,015 — 5,015 U.S. treasury securities 156 — — 156 Mutual funds 22,394 — — 22,394 Total securities available for sale $ 22,550 $ 494,414 $ — $ 516,964 Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis As of December 31, 2017 and 2016 , assets and liabilities measured at fair value on a non-recurring basis are as follows: Level 1 Level 2 Level 3 Quoted Prices in Significant Significant Loss During the (In thousands) December 31, 2017 Assets: Impaired loans (excluding PCI loans) (1) $ — $ 6,121 $ 2,436 $ 2,730 OREO (2) — 1,946 — — December 31, 2016 Assets: Impaired loans (3) $ — $ 15,257 $ 6,767 $ 868 OREO (4) — 7,484 — — (1) Includes real estate loans of $6.7 million , and commercial and industrial loans of $1.7 million . (2) Includes properties from the foreclosure of commercial property loans of $237 thousand and residential property loans of $1.7 million . (3) Includes real estate loans of $17.8 million , commercial and industrial loans of $3.8 million , and consumer loans of $419 thousand . (4) Includes properties from the foreclosure of commercial property loans of $5.4 million and residential property loans of $2.1 million . FASB ASC 825 requires disclosure of the fair value of financial assets and financial liabilities, including those financial assets and financial liabilities that are not measured and reported at fair value on a recurring basis or non-recurring basis. The methodologies for estimating the fair value of financial assets and financial liabilities that are measured on a recurring basis or non-recurring basis are discussed above. The estimated fair value of financial instruments has been determined by using available market information and appropriate valuation methodologies. However, considerable judgment is required to interpret market data in order to develop estimates of fair value. Accordingly, the estimates presented herein are not necessarily indicative of the amounts that we could realize in a current market exchange. The use of different market assumptions and/or estimation methodologies may have a material effect on the estimated fair value amounts. The estimated fair values of financial instruments were as follows: December 31, 2017 Carrying Fair Value Level 1 Level 2 Level 3 (In thousands) Financial assets: Cash and due from banks $ 153,826 $ 153,826 $ — $ — Securities available for sale 578,804 22,538 556,266 — Loans and leases receivable, net of allowance for loan and lease losses 4,273,415 — — 4,213,689 Loans held for sale 6,394 — 6,394 — Accrued interest receivable 12,770 12,770 — — FHLB stock 16,385 — 16,385 — Financial liabilities: Noninterest-bearing deposits 1,312,274 — 1,312,274 — Interest-bearing deposits 3,036,380 — — 2,973,139 Borrowings 267,270 — — 267,270 Accrued interest payable 5,309 5,309 — — Off-balance sheet items: Commitments to extend credit 318,634 — — 318,634 Standby letters of credit 19,294 — — 19,294 Commercial letters of credit 9,308 — — 9,308 December 31, 2016 Carrying Fair Value Level 1 Level 2 Level 3 (In thousands) Financial assets: Cash and due from banks $ 147,235 $ 147,235 $ — $ — Securities available for sale 516,964 22,550 494,414 — Loans receivable, net of allowance for loan losses 3,812,340 — — 3,789,579 Loans held for sale 9,316 — 9,316 — Accrued interest receivable 10,987 10,987 — — FHLB stock 16,385 — 16,385 — Financial liabilities: Noninterest-bearing deposits 1,203,240 — 1,203,240 — Interest-bearing deposits 2,606,497 — — 2,541,929 Borrowings 333,978 — — 333,978 Accrued interest payable 2,567 2,567 — — Off-balance sheet items: Commitments to extend credit 310,987 — — 310,987 Standby letters of credit 15,669 — — 15,669 Commercial letters of credit 4,215 — — 4,215 . The methods and assumptions used to estimate the fair value of each class of financial instruments for which it was practicable to estimate that value are explained below: Cash and cash equivalents – The carrying amounts of cash and cash equivalents approximate fair value due to the short-term nature of these instruments (Level 1). Securities – The fair value of securities, consisting of securities available for sale, is generally obtained from market bids for similar or identical securities, from independent securities brokers or dealers, or from other model-based valuation techniques described above (Level 1, 2 and 3). Loans and leases receivable, net of allowance for loan and lease losses – Loans and leases receivable include Non-PCI loans and leases, PCI loans and Non-PCI impaired loans. The fair value of Non-PCI loans and leases receivable is estimated based on the discounted cash flow approach. The discount rate was derived from the associated yield curve plus spreads and reflects the offering rates offered by the Bank for loans with similar financial characteristics. Yield curves are constructed by product type using the Bank’s loan pricing model for like-quality credits. The discount rates used in the Bank’s model represent the rates the Bank would offer to current borrowers for like-quality credits. These rates could be different from what other financial institutions could offer for these loans. No adjustments have been made for changes in credit within the loan and leases portfolio. It is our opinion that the allowance for loan and lease losses relating to performing and nonperforming loans results in a fair valuation of such loans and leases. Additionally, the fair value of our loans and leases may differ significantly from the values that would have been used had a ready market existed for such loans and leases.The estimated fair value is not an exit price and may differ materially from the values that we may ultimately realize (Level 3). The fair value of PCI loans receivable was estimated based on discounted expected cash flows. Increases in expected cash flows and improvements in the timing of cash flows over those previously estimated increase the amount of accretable yield and are recognized as an increase in yield and interest income prospectively. Decreases in the amount and delays in the timing of expected cash flows compared to those previously estimated decrease the amount of accretable yield and usually result in a provision for loan and lease losses and the establishment of an allowance for loan and lease losses (Level 3). The fair value of impaired loans (excluding PCI loans) is estimated based on the net realizable fair value of the collateral or the observable market price of the most recent sale or quoted price from loans held for sale. The Company does not record loans at fair value on a recurring basis. Nonrecurring fair value adjustments to collateral dependent impaired loans are recorded based on the current appraised value of the collateral (Level 3). Loans held for sale – Loans held for sale are carried at the lower of aggregate cost or fair market value, as determined based upon quotes, bids or sales contract prices, or as may be assessed based upon the fair value of the collateral which is obtained from recent real estate appraisals (Level 2). Adjustments are routinely made in the appraisal process by the appraisers to adjust for differences between the comparable sales and income data available. Such adjustment is typically significant and results in Level 3 classification of the inputs for determining fair value. Accrued interest receivable – The carrying amount of accrued interest receivable approximates its fair value (Level 1). FHLB and FRB stock - The carrying amounts of FHLB and FRB stock approximate fair value, as such stock may be resold to the issuer at carrying value (Level 2). Noninterest-bearing deposits – The fair value of noninterest-bearing deposits is the amount payable on demand at the reporting date (Level 2). Interest-bearing deposits – The fair value of interest-bearing deposits, such as savings accounts, money market checking, and certificates of deposit, is estimated based on discounted cash flows. The cash flows for non-maturity deposits, including savings accounts and money market checking, are estimated based on their historical decaying experiences. The discount rate used for fair valuation is based on interest rates currently being offered by the Bank on comparable deposits as to amount and term (Level 3). Borrowings – Borrowings consist of FHLB advances, subordinated debentures and other borrowings. Discounted cash flows based on current market rates for borrowings with similar remaining maturities are used to estimate the fair value of borrowings (Level 3). Accrued interest payable – The carrying amount of accrued interest payable approximates its fair value (Level 1). Commitments to extend credit, standby letters of credit and Commercial letters of credit – The fair values of commitments to extend credit, standby letters of credit and Commercial letters of credit are based upon the difference between the current value of similar loans and the price at which the Bank has committed to make the loans (Level 3).

Share-based Compensation

Share-based Compensation	12 Months Ended
	Dec. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-based Compensation	Share-based Compensation At December 31, 2017 , we had three incentive plans, the Year 2000 Stock Option Plan (the “2000 Plan”), the 2007 Equity Compensation Plan (the “2007 Plan”) which replaced the 2000 Plan and the 2013 Equity Compensation Plan (the “2013 Plan” and with the 2000 Plan and 2007 Plan, the “Plans”) which replaced the 2007 Plan. The 2013 Plan provides awards of any options, stock appreciation rights, restricted stock awards, restricted stock unit awards, share granted as a bonus or in lieu of another award, dividend equivalent, other stock-based award or performance award, together with any other right or interest to a participant under the plan. Plan participant includes executives and other employees, officers, directors, consultants and other persons who provide services to the Company or its related entities. Although no future stock options may be granted under the 2007 Plan and 2000 Plan, certain employees, directors and officers of Hanmi Financial and its subsidiaries still hold options to purchase Hanmi Financial common stock under the 2013 Plan. Under the 2013 Plan, we may grant equity incentive awards for up to 1,500,000 shares of common stock. As of December 31, 2017 , 533,541 shares were still available for issuance under the 2013 Plan. The Company adopted Accounting Standards Update ("ASU") 2016-09, Compensation - Stock Compensation, during the three months ended March 31, 2016. Adoption of this ASU did not have a material impact on the Company's financial statements. Excess tax benefits related to the Company's share-based compensation were recognized as income tax expense in the consolidated statement of income in 2017 and 2016. The table below provides the share-based compensation expense and related tax benefits for the periods indicated: Year Ended December 31, 2017 2016 2015 (In thousands) Share-based compensation expense $ 2,893 $ 3,008 $ 2,241 Related tax benefits $ 1,179 $ 1,191 $ 755 As of December 31, 2017 , unrecognized share-based compensation expense was as follows Unrecognized Average Expected (In thousands) Stock option awards $ 11 0.4 years Restricted stock awards 4,648 1.7 years Total unrecognized share-based compensation expense $ 4,659 1.7 years 2013 and 2007 Equity Compensation Plans and 2000 Stock Option Plan Stock Options All stock options granted under the Plans have an exercise price equal to the fair market value of the underlying common stock on the date of grant. Stock options granted under the Plans generally vest based on three to five years of continuous service and expire 10 years from the date of grant. Certain option and share awards provide for accelerated vesting if there is a change in control (as defined in the Plan). New shares of common stock are issued or treasury shares are utilized upon the exercise of stock options. The weighted-average fair value per share of options granted was estimated on the date of grant using the Black-Scholes option-pricing model with the following weighted-average assumptions: Year Ended December 31, 2015 Weighted-average assumption Dividend yield 1.80 % Expected volatility 25.00 % Expected term 3 years Risk-free interest rate 1.11 % There were no options granted during the years ended December 31, 2017 and 2016. Expected volatility was determined based on the historical weekly volatility of our stock price over a period equal to the expected term of the options granted. The expected term of the options represents the period that options granted are expected to be outstanding based primarily on the historical exercise behavior associated with previous option grants. The risk-free interest rate was based on the U.S. Treasury yield curve at the time of grant for a period equal to the expected term of the options granted. The following information under the Plans is presented for the periods indicated: Year Ended December 31, 2017 2016 2015 (In thousands, except per share data) Grant date fair value of options granted $ — $ — $ 78 Fair value of options vested $ 820 $ 2,322 $ 2,668 Total intrinsic value of options exercised (1) $ 432 $ 1,862 $ 488 Cash received from options exercised $ 288 $ 1,453 $ 616 Weighted-average estimated fair value per share of options granted $ — $ — $ 3.62 (1) Intrinsic value represents the difference between the closing stock price on the exercise date and the exercise price, multiplied by the number of options. The following is a summary of stock option transactions under the Plans for the periods indicated: Year Ended December 31, 2017 2016 2015 Number of Shares Weighted- Average Exercise Price Per Share Number of Shares Weighted- Average Exercise Price Per Share Number of Shares Weighted- Average Exercise Price Per Share Options outstanding at beginning of period 387,901 $ 17.49 510,148 $ 24.38 603,872 $ 23.78 Options granted — $ — — $ — 28,000 $ 23.47 Options exercised (23,813 ) $ 12.21 (94,997 ) $ 15.29 (46,516 ) $ 13.24 Options forfeited — $ — (125 ) $ 144.00 (71,608 ) $ 20.59 Options expired — $ — (27,125 ) $ 154.09 (3,600 ) $ 136.79 Options outstanding at end of period 364,088 $ 17.86 387,901 $ 17.49 510,148 $ 24.38 Options exercisable at end of period 354,753 $ 17.71 341,561 $ 16.85 333,460 $ 27.16 The following is a summary of transactions for non-vested stock options under the Plans for the periods indicated: Year Ended December 31, 2017 2016 2015 Number of Weighted- Number of Weighted- Number of Weighted- Non-vested options outstanding at beginning of period 46,340 $ 22.42 176,688 $ 19.13 379,106 $ 18.11 Options granted — $ — — $ — 28,000 $ 23.47 Options vested (37,005 ) $ 22.16 (130,223 ) $ 17.83 (158,810 ) $ 16.80 Options forfeited — $ — (125 ) $ 144.00 (71,608 ) $ 20.59 Non-vested options outstanding at end of period 9,335 $ 23.47 46,340 $ 22.42 176,688 $ 19.13 As of December 31, 2017 , stock options outstanding under the Plans were as follows: Options Outstanding Options Exercisable Range of Exercise Prices Number of Intrinsic (1) Weighted- Weighted- Number of Intrinsic (1) Weighted- Weighted- (In thousands except share and per share data) $10.80 to $14.99 13,088 $ 235 $ 12.37 4.6 years 13,088 $ 235 $ 12.37 4.6 years $15.00 to $19.99 255,000 3,550 16.43 5.7 years 255,000 3,550 16.43 5.7 years $20.00 to $24.83 96,000 763 22.41 6.7 years 86,665 698 22.29 6.6 years 364,088 $ 4,548 $ 17.86 354,753 $ 4,483 $ 17.71 (1) Intrinsic value represents the difference between the closing stock price on the last trading day of the period, which was $30.35 as of December 31, 2017 , and the exercise price, multiplied by the number of options. Restricted Stock Awards Restricted stock awards under the Plans become fully vested after a certain number of years or after certain performance criteria are met. Hanmi Financial becomes entitled to an income tax deduction in an amount equal to the taxable income reported by the holders of the restricted shares when the restrictions are released and the shares are issued. Restricted shares are forfeited if officers and employees terminate prior to the lapsing of restrictions. Forfeitures of restricted stock are treated as cancelled shares. The table below provides information for restricted stock awards under the 2013 Plan for the periods indicated: 2017 2016 2015 Number of Weighted- Number of Weighted- Number of Weighted- Restricted stock at beginning of period 343,958 $ 16.60 137,114 $ 20.74 173,222 $ 19.58 Restricted stock granted 127,239 $ 31.06 287,179 $ 15.52 58,092 22.53 Restricted stock vested (139,298 ) $ 18.73 (77,515 ) $ 19.75 (68,017 ) $ 19.16 Restricted stock forfeited (14,116 ) $ 24.73 (2,820 ) $ 21.58 (26,183 ) $ 21.16 Restricted stock at end of period 317,783 $ 21.09 343,958 $ 16.60 137,114 $ 20.74

Earnings per Share

Earnings per Share	12 Months Ended
	Dec. 31, 2017
Earnings Per Share [Abstract]
Earnings per Share	Earnings per Share Earnings per share (“EPS”) is calculated on both a basic and a diluted basis. Basic EPS excludes dilution and is computed by dividing income available to common stockholders by the weighted-average number of shares of common stock outstanding for the period. Diluted EPS reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock or resulted from the issuance of common stock that then shared in earnings, excluding shares of common stock in treasury. Unvested restricted stock is excluded from the calculation of weighted-average number of common shares for basic EPS. For diluted EPS, weighted-average number of common shares included the impact of restricted stock under the treasury method. The Company amended the then-all restricted stock agreements as of September 1, 2015 to allow for the payment of non-forfeitable dividends on unvested restricted stock, accordingly, we adopted the two-class method for EPS calculation pursuant to ASC 260-10, Earnings Per Share. Unvested restricted stock containing rights to non-forfeitable dividends are considered participating securities prior to vesting and have been included in the earnings allocation in computing basic and diluted EPS under the two-class method. Basic EPS is computed by dividing net income, net of income allocated to participating securities, by the weighted-average number of shares of common stock. For diluted EPS, weighted-average number of shares of common stock include the diluted effect of stock options. The following table is a reconciliation of the components used to derive basic and diluted EPS for the periods indicated: Net Income (Numerator) Weighted- Average Shares (Denominator) Per Share Amount (1) (In thousands, except share and per share data) Year Ended December 31, 2017 Basic EPS Net income $ 54,660 32,071,585 $ 1.71 Less: Income allocated to unvested restricted stock 339 32,071,585 0.01 Basic EPS $ 54,321 32,071,585 $ 1.70 Effect of dilutive securities - options, warrants and unvested restricted stock 178,333 Diluted EPS Net income $ 54,660 32,249,918 $ 1.70 Less: Income allocated to unvested restricted stock 339 32,249,918 0.01 Diluted EPS $ 54,321 32,249,918 $ 1.69 Year Ended December 31, 2016 Basic EPS Net income $ 56,489 31,899,582 $ 1.77 Less: Income allocated to unvested restricted stock 457 31,899,582 0.01 Basic EPS $ 56,032 31,899,582 $ 1.76 Effect of dilutive securities - options, warrants and unvested restricted stock 149,122 Diluted EPS Net income $ 56,489 32,048,704 $ 1.76 Less: Income allocated to unvested restricted stock 457 32,048,704 0.01 Diluted EPS $ 56,032 32,048,704 $ 1.75 Year Ended December 31, 2015 Basic EPS Income from continuing operations, net of taxes $ 53,823 31,788,215 $ 1.69 Loss from discontinued operations, net of taxes 145 31,788,215 — Basic EPS $ 53,678 31,788,215 $ 1.69 Effect of dilutive securities - options, warrants and unvested restricted stock 88,605 Diluted EPS Income from continuing operations, net of taxes $ 53,823 31,876,820 $ 1.68 Loss from discontinued operations, net of taxes 145 31,876,820 — Diluted EPS $ 53,678 31,876,820 $ 1.68 (1) Per share amounts may not be able to be recalculated using net income and weighted-average shares presented above due to rounding. There were no anti-dilutive options and shares of unvested restricted stock outstanding for the years ended December 31, 2017 . For the years ended December 31, 2016 and 2015 , there were 74,389 and 30,250 options and shares of unvested restricted stock outstanding, respectively, that were not included in the computation of diluted EPS because their effect would be anti-dilutive.

Employee Benefits

Employee Benefits	12 Months Ended
	Dec. 31, 2017
Postemployment Benefits [Abstract]
Employee Benefits	Employee Benefits 401(k) Plan We have a Section 401(k) plan for the benefit of substantially all of our employees. We match 75 percent of participant contributions to the 401(k) plan up to 8 percent of each 401(k) plan participant’s annual compensation. Contributions to the 401(k) plan were $2.0 million , $1.9 million and $1.6 million for the years ended December 31, 2017 , 2016 and 2015 , respectively. Bank-Owned Life Insurance As of December 31, 2017 , cash surrender value of bank-owned life insurance was $50.6 million . The Bank is the beneficiary under the policy. In the event of the death of a covered officer, we will receive the specified insurance benefit from the insurance carrier.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies We lease our premises under non-cancelable operating leases. At December 31, 2017 , future minimum annual rental commitments under these non-cancelable operating leases, with initial or remaining terms of one year or more, were as follows: Year Ended December 31, Amount (In thousands) 2018 $ 5,621 2019 4,759 2020 4,244 2021 2,746 2022 2,138 Thereafter 7,743 Total $ 27,251 For the years ended December 31, 2017 , 2016 and 2015 , rental expenses recorded under such leases amounted to $7.0 million , $6.6 million and $7.6 million , respectively. Litigation In the normal course of business, we are involved in various legal claims. Management has reviewed all legal claims against us with in-house or outside legal counsel and has taken into consideration the views of such counsel as to the outcome of the claims. In management’s opinion, the final disposition of all such claims will not have a material adverse effect on our financial position or results of operations.

Off-Balance Sheet Commitments

Off-Balance Sheet Commitments	12 Months Ended
	Dec. 31, 2017
Risks and Uncertainties [Abstract]
Off-Balance Sheet Commitments	Off-Balance Sheet Commitments The Bank is a party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of our customers. These financial instruments include commitments to extend credit and standby letters of credit. These instruments involve, to varying degrees, elements of credit and interest rate risk similar to the risk involved with on-balance sheet items recognized in the Consolidated Balance Sheets. The Bank’s exposure to loan losses in the event of non-performance by the other party to commitments to extend credit and standby letters of credit is represented by the contractual notional amount of those instruments. The Bank uses the same credit policies in making commitments and conditional obligations as it does for extending loan facilities to customers. The Bank evaluates each customer’s creditworthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by the Bank upon extension of credit, was based on management’s credit evaluation of the counterparty. Collateral held varies but may include accounts receivable, inventory, premises and equipment, and income-producing or borrower-occupied properties. The following table shows the distribution of undisbursed loan commitments as of the dates indicated: December 31, 2017 December 31, 2016 (In thousands) Commitments to extend credit $ 318,634 $ 310,987 Standby letters of credit 19,294 15,669 Commercial letters of credit 9,308 4,215 Total undisbursed loan commitments $ 347,236 $ 330,871 The allowance for off-balance sheet items is maintained at a level believed to be sufficient to absorb probable losses related to these unfunded credit facilities. The determination of the allowance adequacy is based on periodic evaluations of the unfunded credit facilities including an assessment of the probability of commitment usage, credit risk factors for loans outstanding to these same customers, and the terms and expiration dates of the unfunded credit facilities. Net adjustments to the allowance for off-balance sheet items are included in other operating expenses. Activity in the allowance for off-balance sheet items was as follows for the periods indicated: As of and for the Year Ended December 31, 2017 2016 2015 (In thousands) Allowance for off-balance sheet items: Balance at beginning of period $ 1,184 $ 986 $ 1,366 Provision (income) 112 198 (380 ) Balance at end of period $ 1,296 $ 1,184 $ 986

Liquidity

Liquidity	12 Months Ended
	Dec. 31, 2017
Liquidity [Abstract]
Liquidity	Liquidity Hanmi Financial Hanmi Financial had $13.1 million in cash on deposit with its bank subsidiary. Management believes that Hanmi Financial, on a stand-alone basis, had adequate liquid assets to meet its current debt obligations. Hanmi Bank The principal objective of our liquidity management program is to maintain the Bank’s ability to meet the day-to-day cash flow requirements of our customers who either wish to withdraw funds or to draw upon credit facilities to meet their cash needs. Management believes that the Bank, on a stand-alone basis, has adequate liquid assets to meet its current obligations. The Bank’s primary funding source will continue to be deposits originating from its branch platform. The Bank’s wholesale funds historically consisted of FHLB advances and brokered deposits. As of December 31, 2017 , the Bank had $187.3 million of brokered deposits. We monitor the sources and uses of funds on a regular basis to maintain an acceptable liquidity position. The Bank’s primary source of borrowings is the FHLB, from which the Bank is eligible to borrow up to 30 percent of its assets. As of December 31, 2017 , the total borrowing capacity available based on pledged collateral and the remaining available borrowing capacity were $802.9 million and $652.9 million , respectively, compared to $736.6 million and $421.6 million , respectively, as of December 31, 2016 . The Bank’s FHLB borrowings as of December 31, 2017 and December 31, 2016 totaled $150.0 million and $315.0 million , respectively. The amount that the FHLB is willing to advance differs based on the quality and character of qualifying collateral pledged by the Bank, and the advance rates for qualifying collateral may be adjusted upwards or downwards by the FHLB from time to time. To the extent deposit renewals and deposit growth are not sufficient to fund maturing and withdrawable deposits, repay maturing borrowings, fund existing and future loans and leases, securities and otherwise fund working capital needs and capital expenditures, the Bank may utilize the remaining borrowing capacity from its FHLB borrowing arrangement. As a means of augmenting its liquidity, the Bank had an available borrowing source of $8.5 million from the Federal Reserve Discount Window, to which the Bank pledged securities with a carrying value of $9.0 million , and had no borrowings as of December 31, 2017 . In December 2012, the Bank established a line of credit with Raymond James & Associates, Inc. for repurchase agreements up to $100.0 million . The Bank established unsecured federal funds lines of credit totaling $95.0 million from three financial institutions in June 2014 primarily to support short-term liquidity. The Bank has Contingency Funding Plans (“CFPs”) designed to ensure that liquidity sources are sufficient to meet its ongoing obligations and commitments, particularly in the event of a liquidity contraction. The CFPs are designed to examine and quantify its liquidity under various “stress” scenarios. Furthermore, the CFPs provide a framework for management and other critical personnel to follow in the event of a liquidity contraction or in anticipation of such an event. The CFPs address authority for activation and decision making, liquidity options and the responsibilities of key departments in the event of a liquidity contraction.

Condensed Financial Information

Condensed Financial Information of Parent Company	12 Months Ended
	Dec. 31, 2017
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Condensed Financial Information of Parent Company	Condensed Financial Information of Parent Company Balance Sheets Year Ended December 31, 2017 2016 (In thousands) Assets Cash $ 13,087 $ 3,885 Investment in consolidated subsidiaries 666,371 540,672 Other assets 831 5,572 Total assets $ 680,289 $ 550,129 Liabilities and Stockholders’ Equity Liabilities: Subordinated debentures $ 117,270 $ 18,978 Other liabilities 542 126 Total liabilities 117,812 19,104 Stockholders’ equity 562,477 531,025 Total liabilities and stockholders’ equity $ 680,289 $ 550,129 Statements of Income Year Ended December 31, 2017 2016 2015 (In thousands) Dividends from bank subsidiary $ 22,619 $ 8,978 $ 15,129 Interest expense (5,353 ) (825 ) (623 ) Other expense (5,291 ) (5,188 ) (4,639 ) Income before taxes and undistributed income 11,975 2,965 9,867 Income tax benefit 7,513 2,382 2,140 Income before undistributed income of subsidiary 19,488 5,347 12,007 Equity in undistributed earnings of subsidiary 35,172 51,142 41,816 Net income $ 54,660 $ 56,489 $ 53,823 Statements of Cash Flows Year Ended December 31, 2017 2016 2015 (In thousands) Cash Flows from Operating Activities: Net income $ 54,660 $ 56,489 $ 53,823 Adjustments to reconcile net income to net cash used in operating activities: Income from subsidiary (35,172 ) (51,141 ) (56,840 ) Amortization of subordinated debentures 463 275 159 Share-based compensation expense 2,893 3,008 2,241 Change in other assets and liabilities 5,156 (95 ) (2,680 ) Net cash provided by (used in) operating activities 28,000 8,536 (3,297 ) Cash Flows from Investing Activities: Cash paid for repurchases of vested shares due to employee tax liability — — — Cash acquired in acquisition, net of cash consideration paid — — — Proceeds from Hanmi Bank — — 12,782 Payments to Hanmi Bank (90,000 ) — — Net cash (used in) provided by investing activities (90,000 ) — 12,782 Cash Flows from Financing Activities: Proceeds from exercise of stock options and stock warrants 288 1,453 616 Proceeds from issuance of long-term debt 97,828 — — Cash paid for repurchases of vested shares due to employee tax liability (1,103 ) (579 ) (349 ) Cash dividend paid (25,811 ) (21,185 ) (12,780 ) Net cash provided (used in) by financing activities 71,202 (20,311 ) (12,513 ) Net increase (decrease) in cash 9,202 (11,775 ) (3,028 ) Cash at beginning of year 3,885 15,660 18,688 Cash at end of year $ 13,087 $ 3,885 $ 15,660

Quarterly Financial Data (Unaud

Quarterly Financial Data (Unaudited)	12 Months Ended
	Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Data (Unaudited)	Quarterly Financial Data (Unaudited) Summarized quarterly financial data is shown in the following tables: Quarter Ended March 31 June 30 September 30 December 31 (In thousands, except per share data) 2017: Interest and dividend income $ 48,349 $ 51,326 $ 53,862 $ 55,784 Interest expense 5,995 8,148 8,936 9,440 Net interest income before provision for loan and lease losses 42,354 43,178 44,926 46,344 Loan and lease loss provision (income) (80 ) 422 269 220 Non-interest income 7,217 9,702 8,816 7,680 Non-interest expense 27,240 28,944 28,660 29,258 Income before provision for income taxes 22,411 23,514 24,813 24,546 Provision for income taxes 8,628 9,057 9,890 13,049 Net income $ 13,783 $ 14,457 $ 14,923 $ 11,497 Basic earnings per share $ 0.43 $ 0.45 $ 0.46 $ 0.36 Diluted earnings per share $ 0.43 $ 0.45 $ 0.46 $ 0.36 2016: Interest and dividend income $ 42,674 $ 44,159 $ 44,325 $ 47,313 Interest expense 4,105 4,179 4,743 5,247 Net interest income before provision for loan and lease losses 38,569 39,980 39,582 42,066 Loan and lease loss provision (income) (1,525 ) (1,515 ) (1,450 ) 151 Non-interest income 6,961 9,373 8,674 8,067 Non-interest expense 26,068 27,863 28,337 25,955 Income before provision for income taxes 20,987 23,005 21,369 24,027 Provision for income taxes 6,183 8,857 8,248 9,611 Net income $ 14,804 $ 14,148 $ 13,121 $ 14,416 Basic earnings per share $ 0.46 $ 0.44 $ 0.41 $ 0.45 Diluted earnings per share $ 0.46 $ 0.44 $ 0.41 $ 0.45

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2017
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events Management has evaluated subsequent events through the date of issuance of the financial data included herein. There have been no subsequent events that occurred during such period that would require disclosure in this Annual Report on Form 10-K or would be required to be recognized in the Consolidated Financial Statements as of December 31, 2017 .

Summary of Significant Accoun33

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2017
Accounting Policies [Abstract]
Summary of Operations	Summary of Operations Hanmi Financial Corporation (“Hanmi Financial,” the “Company,” “we,” “us” or “our”) was formed as a holding company of Hanmi Bank (the “Bank”) and registered with the Securities and Exchange Commission under the Securities Act on March 17, 2001. The Bank's primary operations are related to traditional banking activities, including the acceptance of deposits and the lending and investing of money. Effective July 19, 2016, the Bank converted from a state member bank to a state nonmember bank and, as a result, the FDIC is now its primary federal bank regulator. The California Department of Business Oversight remains the Bank's primary state bank regulator. During the third quarter of 2016, the Federal Reserve canceled the Bank's holdings of Federal Reserve stock for $14.4 million in cash. The Bank is a community bank conducting general business banking, with its primary market encompassing the Korean-American community as well as other ethnic communities across California, Texas, Illinois, Virginia, New Jersey, and New York. The Bank’s full-service offices are located in markets where many of the businesses are run by immigrants and other minority groups. The Bank’s client base reflects the multi-ethnic composition of these communities. The Bank is a California state-chartered financial institution insured by the FDIC. As of December 31, 2017 , the Bank maintained a network of 40 full-service branch offices and 8 loan production offices in California, Texas, Illinois, Virginia, New Jersey, New York, Colorado, Georgia and Washington State.
Basis of Presentation	Basis of Presentation The accounting and reporting policies of Hanmi Financial and subsidiaries conform, in all material respects, to U.S. generally accepted accounting principles (“GAAP”) and general practices within the banking industry. The information set forth in the following notes is presented on a continuing operations basis, unless otherwise noted. The following is a summary of the significant accounting policies consistently applied in the preparation of the accompanying Consolidated Financial Statements.
Principles of Consolidation	Principles of Consolidation The Consolidated Financial Statements include the accounts of Hanmi Financial and our wholly-owned subsidiary, the Bank. All intercompany transactions and balances have been eliminated in consolidation.
Use of Estimates in the Preparation of Financial Statements	Use of Estimates in the Preparation of Financial Statements The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Significant areas where estimates are made consist of the allowance for loan and lease losses and allowance for off-balance sheet items, other-than-temporary impairment, securities valuations, purchase credit impaired loans, the fair values of assets and liabilities acquired in a business combination and income taxes. Actual results could differ from those estimates.
Reclassifications	Reclassifications Certain amounts in the prior years' financial statements and related disclosures were reclassified to conform to the current year presentation with no effect on previously reported net income, stockholders’ equity or cash flows.
Segment Reporting	Segment Reporting Through our branch network and lending units, we provide a broad range of financial services to individuals and companies. These services include demand, time and savings deposits; and commercial and industrial, real estate and consumer lending. While our chief decision makers monitor the revenue streams of our various products and services, operations are managed and financial performance is evaluated on a company-wide basis. Accordingly, we consider all of our operations to be aggregated in one reportable operating segment.
Cash and Cash Equivalents	Cash and Cash Equivalents Cash and cash equivalents include cash, due from banks and overnight federal funds sold, all of which have original or purchased maturities of less than 90 days.
Securities	Securities Securities are classified into three categories and accounted for as follows: (i) Securities that we have the positive intent and ability to hold to maturity are classified as “held to maturity” and reported at amortized cost; (ii) Securities that are bought and held principally for the purpose of selling them in the near future are classified as “trading securities” and reported at fair value. Unrealized gains and losses are recognized in earnings; and (iii) Securities not classified as held to maturity or trading securities are classified as “available for sale” and reported at fair value. Unrealized gains and losses are reported as a separate component of stockholders’ equity as accumulated other comprehensive income, net of income taxes. We review securities on an ongoing basis for the presence of other-than-temporary impairment (“OTTI”) or permanent impairment, taking into consideration current market conditions, fair value in relationship to cost, extent and nature of the change in fair value, issuer rating changes and trends, whether we intend to sell a security or if it is likely that we will be required to sell the security before recovery of our amortized cost basis of the investment, which may be maturity, and other factors. For debt securities, the classification of OTTI depends on whether we intend to sell the security or if it is more likely than not that we will be required to sell the security before recovery of its cost basis, and on the nature of the impairment. If we intend to sell a security or if it is more likely than not that we will be required to sell the security before recovery, an OTTI write-down is recognized in earnings equal to the entire difference between the security’s amortized cost basis and its fair value. If we do not intend to sell the security or it is not more likely than not that we will be required to sell the security before recovery, the OTTI write-down is separated into an amount representing credit loss, which is recognized in earnings, and the amount related to all other factors, which is recognized in other comprehensive income net of tax. A credit loss is the difference between the cost basis of the security and the present value of cash flows expected to be collected, discounted at the security’s effective interest rate at the date of acquisition. The cost basis of an other than temporarily impaired security is written down by the amount of impairment recognized in earnings. The new cost basis is not adjusted for subsequent recoveries in fair value.
Loans and Leases Receivable	Loans and leases receivable Originated loans and leases: Loans and leases are originated by the Company with the intent to hold them for investment and are stated at the principal amount outstanding, net of unearned income. Net deferred fees and costs include nonrefundable loan fees and direct loan origination costs. Net deferred fees or costs are recognized as an adjustment to interest income over the contractual life of the loans using the effective interest method or taken into income when the related loans are paid off or sold. The amortization of loan fees or costs is discontinued when a loan is placed on nonaccrual status. Interest income is recorded on an accrual basis in accordance with the terms of the respective loan and includes prepayment penalties. Purchased loans: Purchased loans are stated at the principal amount outstanding, net of unearned discounts or unamortized premiums. All loans acquired in our acquisitions are initially measured and recorded at their fair value on the acquisition date. A component of the initial fair value measurement is an estimate of the loan losses over the life of the purchased loans. Purchased loans are also evaluated for impairment as of the acquisition date and are accounted for as “acquired non-impaired” or “purchased credit impaired” loans. Leases Receivable: As described in “Note 2 — Acquisitions” to the consolidated financial statements, we purchased a portfolio of leases receivable during the fourth quarter of 2016. These receivables include equipment finance agreements with terms ranging from 1 to 7 years. The acquired leases receivable were measured and recorded at fair value on the date of acquisition. Leases originated by the Bank subsequent to acquisition are recorded based on the principal amount outstanding, net of unearned income, and initial indirect costs. Equipment leases are similar to commercial business loans in that the leases are typically made on the basis of the borrower’s ability to make repayment from the cash flows of the borrower’s business. Acquired non-impaired loans and leases: Acquired non-impaired loans and leases are those loans for which there was no evidence of credit deterioration at their acquisition date and it was probable that we would be able to collect all contractually required payments. Acquired non-impaired loans and leases, together with originated loans and leases, are referred to as non-purchased credit impaired (“Non-PCI”) loans and leases. Purchase discount or premium on acquired non-impaired loans and leases is recognized as an adjustment to interest income over the contractual life of such loans and leases using the effective interest method or taken into income when the related loans or leases are paid off or sold. Purchased credit impaired loans. Purchased credit impaired (“PCI”) loans are accounted for in accordance with the Financial Accounting Standards Board’s (“FASB”) Accounting Standards Codification (“ASC”) Subtopic 310-30, “ Loans and Debt Securities Acquired with Deteriorated Credit Quality.” A purchased loan is deemed to be credit impaired when there is evidence of credit deterioration since its origination and it is probable at the acquisition date that we would be unable to collect all contractually required payments. We apply PCI loan accounting (i) when we acquire loans deemed to be impaired, and (ii) as a general policy election for non-impaired loans that we acquire in a distressed bank acquisition. For PCI loans, at the time of acquisition we (i) calculated the contractual amount and timing of undiscounted principal and interest payments (the “undiscounted contractual cash flows”) and (ii) estimated the amount and timing of undiscounted expected principal and interest payments (the “undiscounted expected cash flows”). The difference between the undiscounted contractual cash flows and the undiscounted expected cash flows is the nonaccretable difference. The nonaccretable difference represents an estimate of the loss exposure of principal and interest related to the PCI loan portfolios; such amount is subject to change over time based on the performance of such loans. The carrying value of PCI loans is reduced by payments received, both principal and interest, and increased by the portion of the accretable yield recognized as interest income. The excess of expected cash flows at acquisition over the initial fair value of acquired impaired loans is referred to as the “accretable yield” and is recorded as interest income over the estimated life of the loans using the effective yield. If estimated cash flows are indeterminable, the recognition of interest income will cease to be recognized. At acquisition, the Company may aggregate PCI loans into pools having common credit risk characteristics such as product type, geographic location and risk rating. Increases in expected cash flows over those previously estimated increase the accretable yield and are recognized as interest income prospectively. Decreases in the amount and changes in the timing of expected cash flows compared to those previously estimated decrease the accretable yield and usually result in a provision for loan losses and the establishment of an allowance for loan losses. As the accretable yield increases or decreases from changes in cash flow expectations, the offset is a decrease or increase to the nonaccretable difference. The accretable yield is measured at each financial reporting date based on information then currently available and represents the difference between the remaining undiscounted expected cash flows and the current carrying value of the loans. The Company removes loans from loan pools when the Company receives payment in settlement with the borrower, sells the loan, or foreclose upon the collateral securing the loan. The Company recognizes "Disposition gain on Purchased Credit Impaired Loans" when the cash proceeds or the amount received are in excess of the loan's carrying amount. The removal of the loan from the loan pool and the recognition of disposition gains do not affect the then applicable loan pool accretable yield. PCI loans that are contractually past due are still considered to be accruing and performing as long as there is an expectation that the estimated cash flows will be received. If the timing and amount of cash flows is not reasonably estimable, the loans may be classified as nonaccrual with interest income recognized on either a cash basis or as a reduction of the principal amount outstanding. Non-PCI loans are placed on nonaccrual status when, in the opinion of management, the full timely collection of principal or interest is in doubt. Generally, the accrual of interest is discontinued when principal or interest payments become more than 90 days past due. However, in certain instances, we may place a particular loan on nonaccrual status earlier, depending upon the individual circumstances surrounding the loan’s delinquency. When an asset is placed on nonaccrual status, previously accrued but unpaid interest is reversed against current income. Subsequent collections of cash are applied as principal reductions when received, except when the ultimate collectability of principal is probable, in which case interest payments are credited to income. Nonaccrual assets may be restored to accrual status when principal and interest become current and full repayment is expected, which generally occurs after sustained payment of 6 months. Interest income is recognized on the accrual basis for impaired loans not meeting the criteria for nonaccrual. Nonperforming assets consist of loans and leases on nonaccrual status, loans 90 days or more past due and still accruing interest, loans restructured with troubled borrowers where the terms of repayment have been renegotiated resulting in a reduction or deferral of interest or principal, and other real estate owned (“OREO”). Loans are generally placed on nonaccrual status when they become 90 days past due unless management believes the loan is adequately collateralized and in the process of collection. Additionally, the Bank may place loans that are not 90 days past due on nonaccrual status, if management reasonably believes the borrower will not be able to comply with the contractual loan repayment terms and collection of principal or interest is in question.
Loans Held for Sale	Loans Held for Sale Loans originated, or transferred from loans and leases receivable, and intended for sale in the secondary market are carried at the lower of aggregate cost or fair market value. Fair market value, if lower than cost, is determined based on valuations obtained from market participants or the value of underlying collateral, calculated individually. A valuation allowance is established if the market value of such loans is lower than their cost and net unrealized losses, if any, are recognized through a valuation allowance by charges to income. Origination fees on loans held for sale, net of certain costs of processing and closing the loans, are deferred until the time of sale and are included in the computation of the gain or loss from the sale of the related loans.
Allowance for Loan and Lease Losses	Allowance for Loan and Lease Losses on Non-PCI Loans Management believes the allowance for loan and lease losses is appropriate to provide for probable losses inherent in the loan portfolio. However, the allowance is an estimate that is inherently uncertain and depends on the outcome of future events. Management’s estimates are based on: previous loss experience; volume, growth, size and composition of the loan portfolio; the value of collateral; and current economic conditions. Our lending is concentrated generally in real estate, commercial, SBA and trade finance lending to small and middle market businesses primarily in California, Illinois, and Texas. The Bank charges or credits the income statement for provisions to the allowance for loan losses and the allowance for off-balance sheet items at least quarterly based upon the allowance need. The allowance is determined through an analysis involving quantitative calculations based on historic loss rates and qualitative adjustments for general allowances and individual impairment calculations for specific allocations. The Bank charges the allowance for actual losses on loans and credits the allowance for recoveries on loans previously charged-off. The Bank evaluates the allowance methodology at least annually. For the fourth quarter of 2017, the Bank utilized a 27-quarter look-back period, anchored to the first quarter of 2011, with equal weighting to all quarters. Management determined it was appropriate to anchor the look-back period, in consideration for a prolonged period of low losses and the procyclical nature of provisioning. The anchoring will allow the Bank to better capture the economic cycle while improving the ability to measure losses. For the fourth quarter of 2016, the Bank utilized a 24-quarter rolling look-back period. For the fourth quarter of 2015, the Bank utilized a 20-quarter rolling look-back period. In addition, the estimated loss emergence period utilized in the Bank’s loss migration analysis changed to 2.5 years in 2016 from estimated 1.0 year in 2015, and remained unchanged in 2017. Moreover, in the fourth quarter of 2015, the Bank reevaluated the qualitative adjustments, reducing their affect in light of the lengthening of the business cycle and the continued improvement in credit metrics. The changes in methodology did not materially affect the amount of the allowance at December 31, 2017, 2016 or 2015. To determine general allowance requirements, in 2016 existing loans were divided into eleven general loan pools of risk-rated loans as well as three homogeneous loan pools and in 2015, existing loans were divided into fourteen general loan pools of risk-rated loans as well as three homogeneous loan pools. In 2016, the pooling was revised to eliminate loan types that can be combined under a broader category in order to maintain an accurate analysis of the defined segmentation. For risk-rated loans, migration analysis allocates historical losses by loan pool and risk grade to determine risk factors for potential loss inherent in the current outstanding loan portfolio. Since the homogeneous loans are bulk graded, the risk grade is not factored into the historical loss analysis. In addition, specific allowances are allocated for loans deemed “impaired.” When determining the appropriate level for allowance for loan losses, management considers qualitative adjustments for any factors that are likely to cause estimated loan losses associated with the Bank’s current portfolio to differ from historical loss experience, including, but not limited to, national and local economic and business conditions, volume and geographic concentrations, and problem loan trends. To systematically quantify the credit risk impact of trends and changes within the loan portfolio, a credit risk matrix is utilized. The qualitative factors are considered on a loan pool by loan pool basis subsequent to, and in conjunction with, a loss migration analysis. The credit risk matrix provides various scenarios with positive or negative impact on the portfolio along with corresponding basis points for qualitative adjustments. Additions to the allowance account are charged to earnings through a provision for loan losses while reductions are credited to earnings. The allowance for loan losses is maintained at a level considered adequate by management to absorb probable losses in the loan portfolio. The adequacy of the allowance is determined by management based upon an evaluation and review of the loan portfolio, consideration of historical loan loss experience, current economic conditions, changes in the size and composition of the loan portfolio, analysis of collateral values and other pertinent factors. Loans are measured for impairment when it is probable that not all amounts, including principal and interest, will be collected in accordance with the original contractual terms of the loan agreement. The amount of impairment and any subsequent changes are recorded through the provision for loan losses as an adjustment to the allowance for loan losses. The Bank follows the “Interagency Policy Statement on the Allowance for Loan and Lease Losses” and, as an integral part of the quarterly credit review process, the allowance for loan losses and allowance for off-balance sheet items are reviewed for adequacy. The California Department of Business Oversight and/or the Federal Deposit Insurance Corporation may require the Bank to recognize additions to the allowance for loan losses based upon their assessment of the information available to them at the time of their examinations. In general, the Bank will charge off a loan and declare a loss when its collectability is questionable and when the Bank can no longer justify presenting the loan as an asset on its balance sheet. To determine if a loan should be charged off, all possible sources of repayment are analyzed, including the potential for future cash flow from income or liquidation of other assets, the value of any collateral, and the strength of co-makers or guarantors. When these sources do not provide a reasonable probability that principal can be collected in full, the Bank will fully or partially charge off the loan. For a real estate loan, including commercial term loans secured by collateral, any impaired portion is considered as loss if the loan is more than 90 days past due. In a case where the fair value of collateral is less than the loan balance and the borrower has no other assets or income to support repayment, the amount of the deficiency is considered a loss and charged off. For a commercial and industrial loan other than those secured by real estate, if the borrower is in the process of a bankruptcy filing in which the Bank is an unsecured creditor or deemed virtually unsecured by lack of collateral equity or lien position and the borrower has no realizable equity in assets and prospects for recovery are negligible, the loan is considered a loss and charged off. Additionally, a commercial and industrial unsecured loan that is more than 120 days past due is considered a loss and charged off. For an unsecured consumer loan where a borrower files for bankruptcy, the loan is considered a loss within 60 days of receipt of notification of filing from the bankruptcy court. Other consumer loans are considered a loss if they are more than 90 days past due. Other events, such as bankruptcy, fraud, or death result in charge offs being recorded in an earlier period. Allowance for Loan Losses on PCI Loans The PCI loans are subject to our internal and external credit review. If deterioration in the expected cash flows results in a allowance requirement, a provision for loan losses is charged to earnings. For PCI loans, the allowance for loan losses is measured at the end of each financial reporting period based on expected cash flows. Decreases or increases in the amount and changes in the timing of expected cash flows on the PCI loans as of the financial reporting date compared to those previously estimated are usually recognized by recording a provision or a negative provision for loan losses on such loans.
Impaired Loans	Impaired Loans Loans are identified and classified as impaired when it is probable that not all amounts, including principal and interest, will be collected in accordance with the contractual terms of the loan agreement. The Bank will consider the following loans as impaired: nonaccrual loans or loans where principal or interest payments have been contractually past due for 90 days or more, unless the loan is both well-collateralized and in the process of collection; and loans classified as troubled debt restructuring loans. The Bank considers whether the borrower is experiencing problems such as operating losses, marginal working capital, inadequate cash flows or business deterioration in realizable value. The Bank also considers the financial condition of a borrower who is in industries or countries experiencing economic or political instability. When a loan is considered impaired, any future cash receipts on such loans will be treated as either interest income or return of principal depending upon management’s opinion of the ultimate risk of loss on the individual loan. Cash payments are treated as interest income where management believes the remaining principal balance is fully collectible. We evaluate loan impairment in accordance with GAAP. Impaired loans are measured 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, less costs to sell. If the value of the impaired loan is less than the recorded investment in the loan, the deficiency will be charged off against the allowance for loan losses or, alternatively, a specific allocation will be established. Additionally, impaired loans are specifically excluded from the quarterly migration analysis when determining the amount of the allowance for loan losses required for the period. For impaired loans where the impairment amount is measured based on the present value of expected future cash flows discounted at the loan’s original effective interest rate, any impairment that represents the change in present value attributable to the passage of time is recognized as provision for loan losses.
Troubled Debt Restructuring	Troubled Debt Restructuring A loan is identified as a troubled debt restructuring (“TDR”) when a borrower is experiencing financial difficulties and, for economic or legal reasons related to these difficulties, the Bank grants a concession to the borrower in the restructuring that it would not otherwise consider. The Bank has granted a concession when, as a result of the restructuring, it does not expect to collect all amounts due, including principal and/or interest accrued at the original terms of the loan. The concessions may be granted in various forms, including a below-market change in the stated interest rate, a reduction in the loan balance or accrued interest, an extension of the maturity date, or a note split with principal forgiveness. TDRs are reviewed for potential impairment. Generally, a nonaccrual loan that is restructured remains on nonaccrual status for a period of six months to demonstrate that the borrower can perform under the restructured terms. If the borrower’s performance under the new terms is not reasonably assured, the loan remains classified as a nonaccrual loan. Loans classified as TDRs are reported as impaired loans.
Premises and Equipment	Premises and Equipment Premises and equipment are stated at cost, less accumulated depreciation and amortization. Depreciation and amortization are computed on the straight-line method over the estimated useful lives of the various classes of assets. The ranges of useful lives for the principal classes of assets are as follows: Buildings and improvements 10 to 30 years Furniture and equipment 3 to 10 years Leasehold improvements Term of lease or useful life, whichever is shorter Software 3 years
Impairment of Long-Lived Assets	Impairment of Long-Lived Assets We account for long-lived assets in accordance with the provisions of FASB ASC 360, “Property, Plant and Equipment.” This requires that long-lived assets and certain identifiable intangibles be reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to future net undiscounted cash flows expected to be generated by the asset. If such assets are considered to be impaired, the impairment to be recognized is measured by the amount by which the carrying amount of the assets exceeds the fair value of the assets. Assets to be disposed of are reported at the lower of the carrying amount or fair value less costs to sell.
Other Real Estate Owned	Other Real Estate Owned Assets acquired through loan foreclosure are recorded at the lower of cost or fair value less estimated costs to sell when acquired. If fair value declines subsequent to foreclosure, valuation impairment is recorded through expense. Operating costs after acquisition are expensed.
Servicing Assets and Servicing liabilities	Servicing Assets and Servicing liabilities Servicing assets and servicing liabilities are initially recorded at fair value in accordance with the provisions of FASB ASC 860, “ Transfers and Servicing .” The fair values of servicing assets and servicing liabilities represent either the price paid if purchased, or the allocated carrying amounts based on relative values when retained in a sale. Servicing assets and servicing liabilities are amortized in proportion to, and over the period of, estimated net servicing income. The fair value of servicing assets and servicing liabilities are determined based on the present value of estimated net future cash flows related to contractually specified servicing fees and costs. The servicing assets and servicing liabilities are recorded based on the present value of the contractually specified servicing fee, net of adequate compensation cost, for the estimated life of the loan, using a discount rate and a constant prepayment rate. Management periodically evaluates the servicing assets and servicing liabilities for impairment. Impairment, if it occurs, is recognized in a valuation allowance in the period of impairment.
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets Goodwill and other intangible assets consist of acquired intangible assets arising from acquisitions, including core deposit and third-party originators intangibles. The acquired intangible assets were initially measured at fair value and then are amortized on the straight-line method over their estimated useful lives while goodwill is not amortized. Goodwill and other intangible assets are assessed for impairment annually or whenever events or changes in circumstances indicate the carrying amount may not be recoverable. The Company performed its annual impairment test and determined no impairment existed as of December 31, 2017.
Federal Home Loan Bank Stock	Federal Home Loan Bank Stock The Bank is a member of the Federal Home Loan Bank (“FHLB”) of San Francisco and is required to own common stock in the FHLB based upon the Bank’s balance of outstanding FHLB advances. FHLB stock is carried at cost and may be sold back to the FHLB at its carrying value. FHLB stock is periodically evaluated for impairment based on ultimate recovery of par value. Both cash and stock dividends received are reported as dividend income.
Federal Reserve Bank Stock	Federal Reserve Bank Stock The Bank was a member of the Federal Reserve Bank (“FRB”) of San Francisco and was required to maintain stock in the FRB based on a specified ratio relative to the Bank’s capital. Effective July 19, 2016, the Bank converted from a state member bank to a state nonmember bank and, as a result, the Federal Deposit Insurance Corporation is now its primary federal bank regulator. Our holdings of FRB stock were canceled by the Federal Reserve. FRB stock is carried at cost as of December 31, 2015. Both cash and stock dividends received are reported as dividend income.
Bank-Owned Life Insurance	Bank-Owned Life Insurance We have purchased single premium life insurance policies (“bank-owned life insurance”) on certain officers. The Bank is the beneficiary under each policy. In the event of the death of a covered officer, we will receive the specified insurance benefit from the insurance carrier. Bank-owned life insurance is recorded at the amount that can be realized under the insurance contract at the balance sheet date, which is the cash surrender value adjusted for other charges or other amounts due, if any, that are probable at settlement.
Income Tax	Income Tax We provide for income taxes using the asset and liability method. Under this method, deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between financial statement carrying amounts of existing assets and liabilities and their respective tax bases and operating loss and tax credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. A valuation allowance is provided when it is more likely than not that some portion or all of the deferred tax assets will not be realized.
Affordable Housing Investments	The Bank has invested in limited partnerships formed to develop and operate affordable housing units for lower income tenants throughout California. The partnership interests are accounted for utilizing the proportional amortization method with amortization expense and tax benefits recognized through the income tax provision in accordance with Accounting Standard Update (“ASU”) 2014-1, Accounting for Investments in Qualified Affordable Housing Projects .
Share-Based Compensation	Share-Based Compensation The Company accounts for share-based compensation in accordance with FASB ASC 718, “Compensation-Stock Compensation,” During the first quarter in 2016, the Company early adopted ASU 2016-09 which provides improvements to the accounting for employee share-based payments. As a result of this new standard, excess tax benefits from exercise or vesting of share-based awards are included as a reduction in provision for income tax expense in the period in which the exercise or vesting occurs. As a result of adoption of this ASU, excess tax benefits related to the Company's share-based compensation were recognized as income tax expense in the consolidated statement of income for the year ended December 31, 2017 and 2016.
Earnings per Share	Earnings per Share Earnings per share (“EPS”) is calculated on both a basic and a diluted basis. Basic EPS excludes dilution and is computed by dividing income available to common stockholders by the weighted-average number of common shares outstanding for the period. Diluted EPS reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock or resulted from the issuance of common stock that then shared in earnings, excluding common shares in treasury. For diluted EPS, weighted-average number of common shares included the impact of restricted stock under the treasury method. The Company amended the then-all restricted stock agreements with time-based vesting criterion as of September 1, 2015 to allow for the payment of non-forfeitable dividends on unvested restricted stock, accordingly, we adopted the two-class method for EPS calculation pursuant to ASC 260-10, Earnings Per Share. Unvested restricted stock containing rights to non-forfeitable dividends are considered participating securities prior to vesting and have been included in the earnings allocation in computing basic and diluted EPS under the two-class method. Basic EPS is computed by dividing net income, adjusted for income allocated to participating securities, by the weighted-average number of shares of common stock. For diluted EPS, weighted-average number of common shares include the diluted effect of stock options.
Treasury Stock	Treasury Stock We use the cost method of accounting for treasury stock. The cost method requires us to record the reacquisition cost of treasury stock as a deduction from stockholders’ equity on the Consolidated Balance Sheets.
Business Combinations	Business Combinations For business combinations that are accounted for under the acquisition method, the acquiring entity in a business combination recognizes 100 percent of the acquired assets and assumed liabilities, regardless of the percentage owned, at their estimated fair values as of the date of acquisition. Any excess of the purchase price over the fair value of net assets and other identifiable intangible assets acquired is recorded as goodwill. To the extent the fair value of net assets acquired, including other identifiable assets, exceeds the purchase price, a bargain purchase gain is recognized. Assets acquired and liabilities assumed from contingencies must also be recognized at fair value, if the fair value can be determined during the measurement period. Results of operations of an acquired business are included in the statement of earnings from the date of acquisition. Acquisition-related costs, including conversion and restructuring charges, are expensed as incurred.
Recently Issued Accounting Standards	Recently Issued Accounting Standards FASB ASU 2014-09, Revenue from Contracts with Customers (Topic 606) , replaces existing revenue recognition guidance for contracts to provide goods or services to customers and amends existing guidance related to recognition of gains and losses on the sale of certain nonfinancial assets such as real estate. ASU 2014-09 established a principles-based approach to recognizing revenue that applies to all contracts other than those covered by other authoritative U.S. GAAP guidance. Quantitative and qualitative disclosures regarding the nature, amount, timing and uncertainty of revenue and cash flows are also required. 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. While the guidance will replace most existing revenue recognition guidance in GAAP, the ASU is not applicable to financial instruments and, therefore, will not impact a majority of the Company’s revenue, including net interest income. The Company’s implementation efforts included identification of revenue streams within the scope of the guidance and existing revenue recognition policies. The Company’s evaluation indicates that the new standard will not impact the timing or measurement of its revenue recognition. The adoption of this new accounting standard does not have a material impact on the Company's consolidated financial statements. FASB ASU 2016-01, Financial Instruments-Overall Recognition and Measurement of Financial Assets and Financial Liabilities (Subtopic 825-10) , Recognition and Measurement of Financial Assets and Financial Liabilities, amends the guidance in U.S. GAAP on the accounting for equity investments, financial liabilities under the fair value option and the presentation and disclosure requirements of financial instruments. The FASB additionally clarified guidance related to the valuation allowance assessment when recognizing deferred tax assets resulting from unrealized losses on available-for-sale debt securities. ASU 2016-01 is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption is permitted for the accounting guidance on financial liabilities under the fair value option. Upon adoption, the Company’s investments in equity securities classified as available-for-sale will be accounted for at fair value with unrealized gains or losses reflected in earnings, where the amount of net unrealized gain or loss related to the available-for-sale equity securities portfolio will be reclassified from accumulated other comprehensive income to retained earnings as of January 1, 2018. The adoption of this guidance will not have a material impact on the Company’s Consolidated Financial Statements. FASB ASU 2016-02, Leases (Topic 842) , introduces the most significant change for lessees including the requirement under the new guidance to recognize right-of-use assets and lease liabilities for all leases not considered short-term leases. By definition, a short-term lease is one in which: (a) the lease term is 12 months or less; and (b) there is not an option to purchase the underlying asset that the lessee is reasonably certain to exercise. For short-term leases, lessees may elect an accounting policy by class of underlying asset under which right-of-use assets and lease liabilities are not recognized and lease payments are generally recognized as expense over the lease term on a straight-line basis. This change will result in lessees recognizing right-of-use assets and lease liabilities for most leases currently accounted for as operating leases under the legacy lease accounting guidance. Examples of changes in the new guidance affecting both lessees and lessors include: (a) defining initial direct costs to only include those incremental costs that would not have been incurred if the lease had not been entered into, (b) requiring related party leases to be accounted for based on their legally enforceable terms and conditions, (c) eliminating the additional requirements that must be applied today to leases involving real estate and (d) revising the circumstances under which the transfer contract in a sale-leaseback transaction should be accounted for as the sale of an asset by the seller-lessee and the purchase of an asset by the buyer-lessor. In addition, both lessees and lessors are subject to new disclosure requirements. ASU 2016-02 is effective for public entities for interim and annual periods beginning after December 15, 2018. As a lessee in several operating lease arrangements that are not considered short-tem, effective January 1, 2019, the Company expects to recognize a lease liability for the present value of future such lease commitments and a right of use asset for the same leases. While the Company is currently evaluating the impact of this new guidance, the adoption will result in an increase in the Company’s assets and liabilities on our consolidated balance sheets and it will likely not have a significant impact on our consolidated net income, stockholders’ equity or cash flows. FASB ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments , introduces new guidance for the accounting for credit losses on instruments within its scope. The new guidance introduces an approach based on expected losses to estimate credit losses on certain types of financial instruments. It also modifies the impairment model for available-for-sale (AFS) debt securities and provides for a simplified accounting model for purchased financial assets with credit deterioration since their origination. Current expected credit losses (“CECL”) model, will apply to: (1) financial assets subject to credit losses and measured at amortized cost; and (2) certain off-balance sheet credit exposures. This includes loans, held-to-maturity debt securities, loan commitments, financial guarantees, and net investments in leases, as well as reinsurance and trade receivables. Upon initial recognition of the exposure, the CECL model requires an entity to estimate the credit losses expected over the life of an exposure (or pool of exposures). The estimate of expected credit losses (ECL) should consider historical information, current information, and reasonable and supportable forecasts, including estimates of prepayments. Financial instruments with similar risk characteristics should be grouped together when estimating ECL. ASU 2016-13 is effective for public entities for interim and annual periods beginning after December 15, 2019. Early application of the guidance will be permitted for all entities for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. We are currently of evaluating the impact of this ASU on our consolidated financial statements. FASB ASU 2016-15, Statement of Cash flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments (a consensus of the FASB Emerging Issues Task Force) , addresses eight classification issues related to the statement of cash flows: (1) Debt prepayment of debt extinguishment costs; (2) Settlement of zero-coupon bonds: (3) Contingent consideration payments made after a business combination; (4) Proceeds from the settlement of insurance claims; (5) Proceeds from the settlement of corporate-owned life insurance policies, including bank-owned life insurance policies; (6) Distributions received from equity method investees; (7) Beneficial interests in securitization transactions; and (8) 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 adoption of this guidance will not have a material impact on the Company’s Consolidated Financial Statements. FASB ASU 2016-18, Statement of Cash flows (Topic 230): Restricted Cash (a consensus of the FASB Emerging Issues Task Force) , requires that the statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. Entities will also be required to reconcile such total to amounts on the balance sheet and disclose the nature of the restrictions. ASU 2016-18 is effective for public business entities for financial statements issued 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 adoption of this guidance will not have a material impact on the Company’s Consolidated Financial Statements. FASB ASU 2017-01, Business Combinations (Topic 805): Clarifying the Definition of Business , provides guidance on evaluating whether transactions should be accounted for as acquisitions or disposals of assets or businesses. The new standard clarifies that when substantially all of the fair value of gross assets acquired is concentrated in a single asset, or a group of similar assets, the asset acquired would not represent a business. The new ASU introduces this initial required screen, if met, eliminates the need for further assessment. For public business entities with a calendar year end, the standard is effective in 2018. Early adoption is permitted, including adoption in an interim period. The amendments can be applied to transactions occurring before the guidance was issued, as long as the applicable financial statements have not been issued. The Company is currently evaluating the impact of this ASU on its consolidated financial statements. FASB ASU 2017-04, Intangibles-Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment , simplifies the subsequent measurement of goodwill impairment by eliminating the requirement to calculate the implied fair value of goodwill (i.e., the current Step 2 of the goodwill impairment test) to measure a goodwill impairment charge. Under this ASU, the impairment test is simply the comparison of the fair value of a reporting unit with its carrying amount (the current Step 1), with the impairment charge being the deficit in fair value but not exceeding the total amount of goodwill allocated to that reporting unit. The simplified one-step impairment test applies to all reporting units (including those with zero or negative carrying amounts). An entity should apply the amendments in this ASU on a prospective basis. An entity is required to disclose the nature of and reason for the change in accounting principle upon transition. That disclosure should be provided in the first annual period and in the interim period within the first annual period when the entity initially adopts the amendments in this standard. Public business entities should adopt the amendments in this ASU for annual or any interim goodwill impairment tests in fiscal years beginning after December 15, 2019. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. The Company is currently evaluating the impact of this ASU on its consolidated financial statements. FASB ASU 2017-08, Receivables-Nonrefundable Fees and Other Costs (Topic 310): Premium Amortization on Purchased Callable Debt Securities , shortens the period of amortization of the premium on certain callable debt securities to the earliest call date. ASU 2017-08 applies to securities that have explicit, non-contingent call features that are callable at fixed prices and on preset dates. Securities purchased at a discount and mortgage-backed securities in which early repayment is based on prepayment of the underlying assets of the security are outside the scope of ASU 2017-08. For public business entities, the standard is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. Early adoption is permitted, including adoption in an interim period, and applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. The Company is currently evaluating the impact of this ASU on its consolidated financial statements. FASB ASU 2017-09, Compensation - Stock Compensation (Topic 718): Scope of Modification Accounting , provides clarity and reduces both diversity in practice, and costs and complexity when applying the guidance in Topic 718 to a change in the terms or conditions of a share-based payment award. Under ASU 2017-09, an entity should account for the effects of a modification unless all the following are met: (1) the fair value of the modified award is the same as the fair value of the original award immediately before the original award is modified, (2) the vesting conditions of the modified award are the same as the vesting conditions of the original award immediately before the original award is modified and (3) the classification of the modified award as an equity instrument or a liability instrument is the same as the classification of the original award immediately before the original award is modified. The amendments in this ASU are effective for all entities for annual periods, and interim periods within those annual periods, beginning after December 15, 2017. Early adoption is permitted. The amendments in this ASU should be applied prospectively to an award modified on or after the adoption date. The adoption of this guidance will not have a material impact on the Company’s Consolidated Financial Statements.
Fair Value Measurements	The estimated fair value of financial instruments has been determined by using available market information and appropriate valuation methodologies. However, considerable judgment is required to interpret market data in order to develop estimates of fair value. Accordingly, the estimates presented herein are not necessarily indicative of the amounts that we could realize in a current market exchange. The use of different market assumptions and/or estimation methodologies may have a material effect on the estimated fair value amounts. Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. The three-level fair value hierarchy requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The three levels of inputs that may be used to measure fair value are defined as follows: • Level 1 - Quoted prices (unadjusted) for identical assets or liabilities in active markets that the entity has the ability to access as of the measurement date. • Level 2 - Significant other observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities, quoted prices in markets that are not active, and other inputs that are observable or can be corroborated by observable market data. • Level 3 - Significant unobservable inputs that reflect a company’s own assumptions about the assumptions that market participants would use in pricing an asset or liability. Fair value is used on a recurring basis for certain assets and liabilities in which fair value is the primary basis of accounting. Additionally, fair value is used on a non-recurring basis to evaluate assets or liabilities for impairment or for disclosure purposes. We record securities available for sale at fair value on a recurring basis. Certain other assets, such as loans held for sale, impaired loans, OREO, goodwill and other intangible assets, are recorded at fair value on a non-recurring basis. Non-recurring fair value measurements typically involve assets that are periodically evaluated for impairment and for which any impairment is recorded in the period in which the re-measurement is performed. The following methods and assumptions were used to estimate the fair value of each class of financial instrument below: Securities available for sale - The fair values of securities available for sale are determined by obtaining quoted prices on nationally recognized securities exchanges. If quoted prices are not available, fair values are measured using matrix pricing, which is a mathematical technique used widely in the industry to value debt securities without relying exclusively on quoted prices for the specific securities but rather by relying on the securities’ relationship to other benchmark quoted securities, or other model-based valuation techniques requiring observable inputs other than quoted prices such as yield curve, prepayment speeds, and default rates. Level 1 securities include U.S. treasury securities and mutual funds that are traded on an active exchange or by dealers or brokers in active over-the-counter markets. The fair value of these securities is determined by quoted prices on an active exchange or over-the-counter market. Level 2 securities primarily include mortgage-backed securities, collateralized mortgage obligations, U.S. government agency securities, SBA loan pool securities, municipal bonds and corporate bonds in markets that are not active. In determining the fair value of the securities categorized as Level 2, we obtain reports from nationally recognized broker-dealers detailing the fair value of each investment security held as of each reporting date. The broker-dealers use prices obtained from nationally recognized pricing services to value our fixed income securities. The fair value of the municipal bonds is determined based on a proprietary model maintained by the broker-dealers. We review the prices obtained for reasonableness based on our understanding of the marketplace, and also consider any credit issues related to the bonds. As we have not made any adjustments to the market quotes provided to us and as they are based on observable market data, they have been categorized as Level 2 within the fair value hierarchy. Level 3 securities are instruments that are not traded in the market. As such, no observable market data for the instrument is available, which necessitates the use of significant unobservable inputs. Loans held for sale – All loans held for sale are SBA loans carried at the lower of cost or fair value. Management obtains quotes, bids or pricing indication sheets on all or part of these loans directly from the purchasing financial institutions. Premiums received or to be received on the quotes, bids or pricing indication sheets are indicative of the fact that cost is lower than fair value.

Summary of Significant Accoun34

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2017
Accounting Policies [Abstract]
Useful Lives for Principal Classes of Assets	The ranges of useful lives for the principal classes of assets are as follows: Buildings and improvements 10 to 30 years Furniture and equipment 3 to 10 years Leasehold improvements Term of lease or useful life, whichever is shorter Software 3 years

Securities (Tables)

Securities (Tables)	12 Months Ended
	Dec. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Summary of Investment Securities Available for Sale	The following is a summary of securities available for sale as of December 31, 2017 and 2016: Amortized Gross Gross Estimated (In thousands) December 31, 2017 Mortgage-backed securities (1) $ 306,166 $ 145 $ 2,702 $ 303,609 Collateralized mortgage obligations (1) 119,658 8 1,898 117,768 U.S. government agency securities 7,499 — 85 7,414 Municipal bonds-tax exempt 125,601 1,943 69 127,475 U.S. treasury securities 152 — — 152 Mutual funds 22,916 — 530 22,386 Total securities available for sale $ 581,992 $ 2,096 $ 5,284 $ 578,804 December 31, 2016 Mortgage-backed securities (1) (2) $ 230,489 $ 598 $ 1,457 $ 229,630 Collateralized mortgage obligations (1) 77,447 6 1,002 76,451 U.S. government agency securities 7,499 — 58 7,441 SBA loan pool securities 4,356 — 210 4,146 Municipal bonds-tax exempt 159,789 236 1,995 158,030 Municipal bonds-taxable 13,391 319 9 13,701 Corporate bonds 5,010 5 — 5,015 U.S. treasury securities 156 — — 156 Mutual funds 22,916 — 522 22,394 Total securities available for sale $ 521,053 $ 1,164 $ 5,253 $ 516,964 (1) Collateralized by residential mortgages and guaranteed by U.S. government sponsored entities.
Schedule of Amortized Cost and Estimated Fair Value of Investment Securities by Contractual Maturity	The amortized cost and estimated fair value of securities as of December 31, 2017 , by contractual or expected maturity, are shown below. Collateralized mortgage obligations are included in the table shown below based on their expected maturities. Since mutual funds do not have contractual maturities and the Company intends to hold these securities for ten years or longer, they are included in the table shown below in the over ten years category. All other securities are included based on their contractual maturities. Available for Sale Amortized Estimated (In thousands) Within one year $ 16,951 $ 16,897 Over one year through five years 73,659 72,898 Over five years through ten years 252,829 251,681 Over ten years 238,553 237,328 Total $ 581,992 $ 578,804
Available for Sale Securities, Continuous Unrealized Loss Position, Fair value	Gross unrealized losses on securities available for sale, the estimated fair value of the related securities and the number of securities aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, were as follows as of December 31, 2017 and 2016 : Holding Period Less Than 12 Months 12 Months or More Total Gross Estimated Number of Gross Estimated Number of Gross Estimated Number of (In thousands, except number of securities) December 31, 2017 Mortgage-backed securities $ 1,855 $ 197,621 66 $ 847 $ 56,998 25 $ 2,702 $ 254,619 91 Collateralized mortgage obligations 773 65,726 20 1,125 49,986 32 1,898 115,712 52 U.S. government agency securities 15 1,484 1 70 5,930 2 85 7,414 3 Municipal bonds-tax exempt 48 11,541 6 21 2,737 2 69 14,278 8 Mutual funds — — — 530 22,382 6 530 22,382 6 Total $ 2,691 $ 276,372 93 $ 2,593 $ 138,033 67 $ 5,284 $ 414,405 160 December 31, 2016 Mortgage-backed securities $ 1,345 $ 102,647 38 $ 112 $ 11,350 3 $ 1,457 $ 113,997 41 Collateralized mortgage obligations 676 60,786 27 326 10,579 7 1,002 71,365 34 U.S. government agency securities 58 7,441 3 — — — 58 7,441 3 SBA loan pool securities — — — 210 4,146 2 210 4,146 2 Municipal bonds-tax exempt 1,995 125,004 54 — — — 1,995 125,004 54 Municipal bonds-taxable 9 2,904 2 — — — 9 2,904 2 Mutual funds 413 21,478 4 109 916 3 522 22,394 7 Total $ 4,496 $ 320,260 128 $ 757 $ 26,991 15 $ 5,253 $ 347,251 143
Realized Gains and Losses on Sales of Investment Securities	Realized gains and losses on sales of securities and proceeds from sales of securities were as follows for the periods indicated: Year Ended December 31, 2017 2016 2015 (In thousands) Gross realized gains on sales of securities $ 1,891 $ 396 $ 6,776 Gross realized losses on sales of securities (143 ) (350 ) (165 ) Net realized gains on sales of securities $ 1,748 $ 46 $ 6,611 Proceeds from sales of securities $ 97,271 $ 78,282 $ 456,098

Loans and Leases (Tables)

Loans and Leases (Tables)	12 Months Ended
	Dec. 31, 2017
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans Receivable	Loans and leases receivable consisted of the following as of the dates indicated: December 31, 2017 December 31, 2016 Non-PCI Loans and Leases PCI Loans Total Non-PCI Loans and Leases PCI Loans Total (In thousands) Real estate loans: Commercial property Retail $ 913,628 $ 1,645 $ 915,273 $ 857,629 $ 2,324 $ 859,953 Hotel/motel 679,683 1,642 681,325 649,540 1,618 651,158 Other (1) 1,413,852 3,421 1,417,273 1,367,776 4,759 1,372,535 Total commercial property loans 3,007,163 6,708 3,013,871 2,874,945 8,701 2,883,646 Construction 55,190 — 55,190 55,962 — 55,962 Residential property 520,902 951 521,853 337,791 976 338,767 Total real estate loans 3,583,255 7,659 3,590,914 3,268,698 9,677 3,278,375 Commercial and industrial loans: Commercial term 182,636 49 182,685 138,032 136 138,168 Commercial lines of credit 181,894 — 181,894 136,231 — 136,231 International loans 34,622 — 34,622 25,821 — 25,821 Total commercial and industrial loans 399,152 49 399,201 300,084 136 300,220 Leases receivable 297,284 — 297,284 243,294 — 243,294 Consumer loans (2) 17,019 40 17,059 22,830 50 22,880 Total loans and leases 4,296,710 7,748 4,304,458 3,834,906 9,863 3,844,769 Allowance for loan and lease losses (30,723 ) (320 ) (31,043 ) (31,458 ) (971 ) (32,429 ) Loans and leases receivable, net $ 4,265,987 $ 7,428 $ 4,273,415 $ 3,803,448 $ 8,892 $ 3,812,340 (1) Includes, among other property types, mixed-use, gas station, apartment, office, industrial, faith-based facilities and warehouse; the remaining real estate categories represents less than one percent of the Bank's total loans and leases. (2) Consumer loans include home equity lines of credit of $14.2 million and $17.7 million as of December 31, 2017 and 2016 , respectively.
Loans Receivable to Loans Held for Sale	The following table details the information on the sales and reclassifications of SBA loans receivable to loans held for sale by portfolio segment for the years ended December 31, 2017 and 2016 : Real Estate Commercial and Total (In thousands) December 31, 2017 Balance at beginning of period $ 7,410 $ 1,906 $ 9,316 Origination of loans held for sale 70,710 38,401 109,111 Sales of loans held for sale (74,344 ) (37,633 ) (111,977 ) Principal payoffs and amortization (30 ) (26 ) (56 ) Balance at end of period $ 3,746 $ 2,648 $ 6,394 December 31, 2016 Balance at beginning of period $ 840 $ 2,034 $ 2,874 Origination of loans held for sale 65,416 25,951 91,367 Sales of loans held for sale (58,836 ) (26,065 ) (84,901 ) Principal payoffs and amortization (10 ) (14 ) (24 ) Balance at end of period $ 7,410 $ 1,906 $ 9,316
Allowance for Loan and Lease Losses	Activity in the allowance for loan and lease losses and allowance for off-balance sheet items was as follows for the periods indicated: Non-PCI Loans and Leases PCI Loans Total As of and for the Year Ended December 31, 2017 (In thousands) Balance at beginning of period $ 31,458 $ 971 $ 32,429 Charge-offs (5,899 ) — (5,899 ) Recoveries on loans and leases previously charged off 3,682 — 3,682 Net loan and lease charge-offs (2,217 ) — (2,217 ) Loan and lease loss provision (income) 1,482 (651 ) 831 Balance at end of period $ 30,723 $ 320 $ 31,043 As of and for the Year Ended December 31, 2016 Balance at beginning of period $ 37,494 $ 5,441 $ 42,935 Charge-offs (3,736 ) (5,133 ) (8,869 ) Recoveries on loans and leases previously charged off 2,702 — 2,702 Net loan and lease charge-offs (1,034 ) (5,133 ) (6,167 ) Loan and lease loss provision (income) (5,002 ) 663 (4,339 ) Balance at end of period $ 31,458 $ 971 $ 32,429 As of and for the Year Ended December 31, 2015 Balance at beginning of period $ 51,640 $ 1,026 $ 52,666 Charge-offs (3,531 ) — (3,531 ) Recoveries on loans and leases previously charged off 5,423 — 5,423 Net loan and lease recoveries 1,892 — 1,892 Loan and lease loss provision (income) (16,038 ) 4,415 (11,623 ) Balance at end of period $ 37,494 $ 5,441 $ 42,935
Allowance for Loan and Lease Losses by Portfolio Segment	The following table details the information on the allowance for loan and lease losses on non-PCI loans leases by portfolio segment for the years ended December 31, 2017 and 2016 : Real Estate Commercial Leases Receivable Consumer Unallocated Total (In thousands) December 31, 2017 Allowance for loan losses on non-PCI loans and leases: Beginning balance $ 25,212 $ 5,582 307 $ 191 $ 166 $ 31,458 Charge-offs (2,150 ) (2,516 ) (1,233 ) — — (5,899 ) Recoveries on loans and leases previously charged off 1,527 1,901 239 15 — 3,682 Loan and lease loss provision (income) (7,836 ) 2,392 6,966 (104 ) 64 1,482 Ending balance $ 16,753 $ 7,359 $ 6,279 $ 102 $ 230 $ 30,723 Ending balance: individually evaluated for impairment $ 2,093 $ 441 $ 3,334 $ 10 $ — $ 5,878 Ending balance: collectively evaluated for impairment $ 14,660 $ 6,918 $ 2,945 $ 92 $ 230 $ 24,845 Non-PCI loans and leases receivable: Ending balance $ 3,583,255 $ 399,152 $ 297,284 $ 17,019 $ — $ 4,296,710 Ending balance: individually evaluated for impairment $ 18,663 $ 3,040 $ 4,452 $ 1,029 $ — $ 27,184 Ending balance: collectively evaluated for impairment $ 3,564,592 $ 396,112 $ 292,832 $ 15,990 $ — $ 4,269,526 Allowance for loan losses on PCI loans: Beginning balance $ 922 $ 41 $ — $ 8 $ — $ 971 Provision (663 ) — — 12 — (651 ) Ending balance $ 259 $ 41 $ — $ 20 $ — $ 320 PCI loans receivable: Ending balance: acquired with deteriorated credit quality $ 7,659 $ 49 $ — $ 40 $ — $ 7,748 Real Estate Commercial and Industrial Leases Receivable Consumer Unallocated Total (In thousands) December 31, 2016 Allowance for loan losses on non-PCI loans and leases: Beginning balance $ 29,800 $ 7,081 — $ 242 $ 371 $ 37,494 Charge-offs (3,022 ) (706 ) (6 ) (2 ) — (3,736 ) Recoveries on loans and leases previously charged off 667 1,978 1 56 — 2,702 Loan and lease loss provision (income) (2,233 ) (2,771 ) 312 (105 ) (205 ) (5,002 ) Ending balance $ 25,212 $ 5,582 $ 307 $ 191 $ 166 $ 31,458 Ending balance: individually evaluated for impairment $ 3,980 $ 347 $ — $ — $ — $ 4,327 Ending balance: collectively evaluated for impairment $ 21,232 $ 5,235 $ 307 $ 191 $ 166 $ 27,131 Non-PCI loans and leases receivable: Ending balance $ 3,268,698 $ 300,084 $ 243,294 $ 22,830 $ — $ 3,834,906 Ending balance: individually evaluated for impairment $ 21,757 $ 4,174 $ — $ 419 $ — $ 26,350 Ending balance: collectively evaluated for impairment $ 3,246,941 $ 295,910 $ 243,294 $ 22,411 $ — $ 3,808,556 Allowance for loan losses on PCI loans: Beginning balance $ 5,397 $ 42 $ — $ 2 $ — $ 5,441 Charge-offs (5,133 ) — — — — (5,133 ) Provision 658 (1 ) — 6 — 663 Ending balance $ 922 $ 41 $ — $ 8 $ — $ 971 PCI loans receivable: Ending balance: acquired with deteriorated credit quality $ 9,677 $ 136 $ — $ 50 $ — $ 9,863
Information on Impaired Loans and Leases, Disaggregated by Loan Class	The following table provides information on impaired loans (excluding PCI loans), disaggregated by loan class, as of the dates indicated : Recorded Unpaid Principal With No With an Related Average Interest (In thousands) As of or for The Year Ended December 31, 2017 Real estate loans: Commercial property Retail $ 1,403 $ 1,423 $ 1,246 $ 157 $ 1 $ 1,528 $ 106 Hotel/motel 6,184 7,220 2,144 4,040 1,677 6,080 431 Other 8,513 9,330 7,569 944 394 9,551 842 Residential property 2,563 2,728 824 1,739 21 2,771 122 Total real estate loans 18,663 20,701 11,783 6,880 2,093 19,930 1,501 Commercial and industrial loans: Commercial term 2,857 2,899 886 1,971 441 3,529 192 Commercial lines of credit 182 182 182 — — 685 16 International loans — — — — — — — Leases receivable 4,452 4,626 455 3,997 3,334 4,464 47 Consumer loans 1,029 1,215 919 110 10 982 33 Total $ 27,183 $ 29,623 $ 14,225 $ 12,958 $ 5,878 $ 29,590 $ 1,789 As of or for The Year Ended December 31, 2016 Real estate loans: Commercial property Retail $ 1,678 $ 1,684 $ 151 $ 1,527 $ 120 $ 2,243 $ 141 Hotel/motel 6,227 6,823 2,243 3,984 3,078 4,887 454 Other 11,054 11,900 8,111 2,943 782 11,935 1,326 Residential property 2,798 2,851 2,798 — — 2,656 112 Total real estate loans 21,757 23,258 13,303 8,454 3,980 21,721 2,033 Commercial and industrial loans: Commercial term 4,106 4,171 1,229 2,877 347 4,815 307 Commercial lines of credit 68 68 68 — — 45 14 International loans — — — — — 315 — Consumer loans 419 489 419 — — 622 29 Total $ 26,350 $ 27,986 $ 15,019 $ 11,331 $ 4,327 $ 27,518 $ 2,383 As of or for The Year Ended December 31, 2015 Real estate loans: Commercial property Retail $ 2,597 $ 2,892 $ 2,435 $ 162 $ 27 $ 3,878 $ 277 Hotel/motel 7,168 7,538 2,873 4,295 3,068 6,628 572 Other 14,681 16,625 11,619 3,062 759 17,334 1,231 Residential property 2,895 3,081 2,608 287 4 2,839 120 Total real estate loans 27,341 30,136 19,535 7,806 3,858 30,679 2,200 Commercial and industrial loans: Commercial term 5,257 5,621 1,858 3,399 457 6,637 368 Commercial lines of credit 381 493 280 101 100 1,515 42 International loans 1,215 1,215 647 568 30 1,257 — Consumer loans 1,665 1,898 1,665 — — 1,753 73 Total $ 35,859 $ 39,363 $ 23,985 $ 11,874 $ 4,445 $ 41,841 $ 2,683
Summary of Interest Foregone on Impaired Loans	The following is a summary of interest foregone on impaired loans (excluding PCI loans) for the periods indicated: Year Ended December 31, 2017 2016 2015 (In thousands) Interest income that would have been recognized had impaired loans performed in accordance with their original terms $ 2,575 $ 3,053 $ 4,168 Less: Interest income recognized on impaired loans (1,790 ) (2,383 ) (2,683 ) Interest foregone on impaired loans $ 785 $ 670 $ 1,485
Non-Accrual Loans and Leases, Disaggregated by Loan Class	The following table details nonaccrual loans and leases (excluding PCI loans), disaggregated by loan class, as of the dates indicated: As of December 31, 2017 2016 (In thousands) Real estate loans: Commercial property Retail $ 224 $ 404 Hotel/motel 5,263 5,266 Other 2,462 3,058 Residential property 591 564 Total real estate loans 8,540 9,292 Commercial and industrial loans: Commercial term 1,710 824 Commercial lines of credit 182 — Leases receivable 4,452 901 Consumer loans 921 389 Total nonaccrual loans and leases $ 15,805 $ 11,406
Non-Performing Assets	The following table details nonperforming assets (excluding PCI loans) as of the dates indicated: As of December 31, 2017 2016 (In thousands) Nonaccrual loans and leases $ 15,805 $ 11,406 Loans and leases 90 days or more past due and still accruing — — Total nonperforming loans and leases 15,805 11,406 Other real estate owned 1,946 7,484 Total nonperforming assets $ 17,751 $ 18,890
Troubled Debt Restructurings, Disaggregated by Type of Concession and by Loan Type	The following table details TDRs (excluding PCI loans), disaggregated by concession type and by loan type, as of December 31, 2017 , 2016 and 2015 : Nonaccrual TDRs Accrual TDRs Deferral of Deferral of Reduction of Extension of Total Deferral of Deferral of Reduction of Extension of Total (In thousands) December 31, 2017 Real estate loans: Commercial property Retail $ — $ — $ — $ — $ — $ — $ — $ 1,188 $ — $ 1,188 Hotel/motel 1,156 3,495 — — 4,651 — — 169 — 169 Other 779 266 64 — 1,109 2,777 — 30 959 3,766 Residential property — — — — — 632 — — 278 910 Total real estate loans 1,935 3,761 64 — 5,760 3,409 — 1,387 1,237 6,033 Commercial and industrial loans: Commercial term 131 123 1,173 102 1,529 6 182 503 427 1,118 Consumer loans 811 — — — 811 — — 108 — 108 Total $ 2,877 $ 3,884 $ 1,237 $ 102 $ 8,100 $ 3,415 $ 182 $ 1,998 $ 1,664 $ 7,259 December 31, 2016 Real estate loans: Commercial property Retail $ — $ — $ — $ — $ — $ — $ — $ 1,228 $ 1,228 Hotel/motel 1,292 3,722 — — 5,014 — — — — Other 387 651 143 — 1,181 4,012 286 1,344 5,642 Residential property — — 783 — 289 1,072 Total real estate loans 1,679 4,373 143 — 6,195 4,795 — 1,514 1,633 7,942 Commercial and industrial loans: Commercial term 149 71 69 419 708 22 198 2,135 662 3,017 Commercial lines of credit — — — — — 68 68 Consumer loans — — — 119 119 Total $ 1,828 $ 4,444 $ 212 $ 419 $ 6,903 $ 4,817 $ 198 $ 3,768 $ 2,363 $ 11,146 December 31, 2015 Real estate loans: Commercial property Retail $ — $ — $ — $ 344 $ 344 $ — $ — $ 1,227 $ — $ 1,227 Hotel/motel 1,216 28 — — 1,244 414 — — — 414 Other 959 1,301 216 8 2,484 3,537 — 322 1,378 5,237 Residential property 689 — — — 689 — — — 299 299 Total real estate loans 2,864 1,329 216 352 4,761 3,951 — 1,549 1,677 7,177 Commercial and industrial loans: Commercial term 45 — 997 679 1,721 40 214 1,673 945 2,872 Commercial lines of credit 222 — — 58 280 — — — — — Consumer loans — — 116 — 116 250 — — — 250 Total $ 3,131 $ 1,329 $ 1,329 $ 1,089 $ 6,878 $ 4,241 $ 214 $ 3,222 $ 2,622 $ 10,299
Troubled Debt Restructurings, Disaggregated by Loan Class	The following table details TDRs (excluding PCI loans), disaggregated by loan class, for the years ended December 31, 2017 , 2016 and 2015 : December 31, 2017 December 31, 2016 December 31, 2015 Number of Pre- Post- Number of Pre- Post- Number of Pre- Post- (In thousands, except number of loans) Real estate loans: Commercial property Retail (1) — $ — $ — 1 $ 21 $ 23 1 $ 1,230 $ 1,227 Hotel/motel (2) 1 167 169 1 3,764 3,722 — — — Other (3) 1 15 15 — — — 2 725 724 Total real estate loans 2 182 184 2 3,785 3,745 3 1,955 1,951 Commercial and Industrial Loans: Commercial term (4) 1 123 123 5 403 331 10 973 801 Consumer loans (5) 1 820 811 — — — 1 250 250 Total TDRs 4 $ 1,125 $ 1,118 7 $ 4,188 $ 4,076 14 $ 3,178 $ 3,002 (1) Includes a modification of $23,000 through a reduction of principal or interest for the year ended December 31, 2016 , and a modification of $1.2 million through payment deferrals for the year ended December 31, 2015 . (2) Includes a modification of $169,000 through a reduction of principal or interest for the year ended December 31, 2017 , and a modification of $3.7 million through a payment deferral for the year ended December 31, 2016 . (3) Includes a modification of $15,000 through a payment deferral for the year ended December 31, 2017 , and modifications of $724,000 through payment deferrals for the year ended December 31, 2015 . (4) Includes a modification of $123,000 through a payment deferral for the year ended December 31, 2017 , and three modifications of $216,000 through payment deferrals, a modification of $65,000 through a reduction of principal or interest and a modification of $50,000 through an extension of maturity for the year ended December 31, 2016 . Includes modifications of $34,000 through payment deferrals, $60,000 through reductions of principal or interest and $707,000 through extensions of maturity for the year ended December 31, 2015 . (5) Includes a modification of $811,000 through a payment deferral for the year ended December 31, 2017 , and a modification of $250,000 through a payment deferral for the year ended December 31, 2015 . During the year
Troubled Debt Restructurings that Defaulted Subsequent to Modifications Occurring Within Previous Twelve Months, Disaggregated by Loan Class	The following table details TDRs (excluding PCI loans) that defaulted subsequent to the modifications occurring within the previous twelve months, disaggregated by loan class, for years ended December 31, 2016 and 2015 , respectively: For the Year Ended December 31, 2016 December 31, 2015 Number of Recorded Number of Recorded (In thousands, except number of loans) Real estate loans: Commercial property — — 1 412 Commercial and industrial loans: Commercial term 1 50 1 178 Total TDRs 1 $ 50 2 $ 590
Schedule of Changes in Carrying Value of PCI Loans	The following table summarizes the changes in carrying value of PCI loans for the three-year period ended December 31, 2017 : For the Year Ended December 31, 2017 December 31, 2016 December 31, 2015 Carrying Amount Accretable Yield Carrying Amount Accretable Yield Carrying Accretable (In thousands) (In thousands) (In thousands) Beginning Balance $ 8,892 $ (5,677 ) $ 14,573 $ (5,944 ) $ 43,475 $ (11,025 ) Accretion 602 602 1,144 1,144 2,956 2,956 Payments received (2,827 ) — (7,138 ) — (31,215 ) — Disposal/transfers to OREO 110 — 977 — 3,772 — Change in expected cash flows, net — (410 ) — (877 ) — 2,125 Provision for credit losses 651 — (664 ) — (4,415 ) — Ending Balance $ 7,428 $ (5,485 ) $ 8,892 $ (5,677 ) $ 14,573 $ (5,944 )
Summary of Acquired Purchased Credit Impaired Loans	As of December 31, 2017 , we had no PCI loans on nonaccrual status and included in the delinquency table below. As of December 31, 2017 Pooled PCI Loans Non-pooled PCI Loans #Loans #Pools Carrying Amount (In thousands) % of total #Loans Carrying Amount (In thousands) % of total Total PCI Loans (In thousands) Real estate loans: Commercial property 40 7 $ 6,708 100 % — $ — — % $ 6,708 Construction — — — — % — — — % — Residential property — — — — % 1 951 100 % 951 Total real estate loans 40 7 6,708 87.6 % 1 951 12.4 % 7,659 Commercial and industrial loans 3 3 49 100 % — — — % 49 Consumer loans 1 1 3 7.5 % 1 37 92.5 % 40 Total acquired loans 44 11 $ 6,760 87.2 % 2 $ 988 12.8 % $ 7,748 Allowance for loan losses $ (218 ) $ (102 ) $ (320 ) Total carrying amount $ 6,542 $ 886 $ 7,428 As of December 31, 2016 Pooled PCI Loans Non-pooled PCI Loans #Loans #Pools Carrying Amount (In thousands) % of total #Loans Carrying Amount (In thousands) % of total Total PCI Loans (In thousands) Real estate loans: Commercial property 45 6 $ 7,780 89 % 1 $ 921 11 % $ 8,701 Construction — — — — % — — — % — Residential property — — — — % 2 976 100 % 976 Total real estate loans 45 6 7,780 80 % 3 1,897 20 % 9,677 Commercial and industrial loans 6 3 136 100 % — — — % 136 Consumer loans 1 1 50 100 % — — — % 50 Total acquired loans 52 10 $ 7,966 81 % 3 $ 1,897 19 % $ 9,863 Allowance for loan losses $ (617 ) $ (354 ) $ (971 ) Total carrying amount $ 7,349 $ 1,543 $ 8,892
Non-PCI Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Credit Quality of Loans and Leases Portfolios	As of December 31, 2017 and 2016 , pass/pass-watch, special mention and classified (substandard and doubtful) loans and leases (excluding PCI loans), disaggregated by loan class, were as follows: Pass/Pass-Watch Special Mention Classified Total (In thousands) December 31, 2017 Real estate loans: Commercial property Retail $ 909,462 $ 454 $ 3,712 $ 913,628 Hotel/motel 667,085 4,880 7,718 679,683 Other 1,397,657 10,813 5,382 1,413,852 Construction 55,190 — — 55,190 Residential property 520,310 305 287 520,902 Total real estate loans 3,549,704 16,452 17,099 3,583,255 Commercial and industrial loans: Commercial term 179,835 439 2,362 182,636 Commercial lines of credit 181,462 250 182 181,894 International loans 34,622 — — 34,622 Leases receivable 292,832 — 4,452 297,284 Consumer loans 15,995 — 1,024 17,019 Total $ 4,254,450 $ 17,141 $ 25,119 $ 4,296,710 December 31, 2016 Real estate loans: Commercial property Retail $ 851,147 $ 2,275 $ 4,207 $ 857,629 Hotel/motel 634,397 5,497 9,646 649,540 Other 1,352,193 3,556 12,027 1,367,776 Construction 55,962 — — 55,962 Residential property 337,227 — 564 337,791 Total real estate loans 3,230,926 11,328 26,444 3,268,698 Commercial and industrial loans: Commercial term 133,811 2,060 2,161 138,032 Commercial lines of credit 135,699 464 68 136,231 International loans 23,406 2,415 — 25,821 Leases receivable 242,393 — 901 243,294 Consumer loans 22,139 — 691 22,830 Total $ 3,788,374 $ 16,267 $ 30,265 $ 3,834,906
Analysis of Gross Loans and Leases, Disaggregated by Loan Class	The following is an aging analysis of gross loans and leases (excluding PCI loans), disaggregated by loan class, as of the dates indicated: 30-59 Days Past Due 60-89 Days Past Due 90 Days or More Past Due Total Past Due Current Total Accruing 90 Days or More Past Due (In thousands) December 31, 2017 Real estate loans: Commercial property Retail $ 96 $ 15 $ 196 $ 307 $ 913,321 $ 913,628 $ — Hotel/motel 3,421 — 398 3,819 675,864 679,683 — Other 1,245 1,333 467 3,045 1,410,807 1,413,852 — Construction — — — — 55,190 55,190 — Residential property 609 — — 609 520,293 520,902 — Total real estate loans 5,371 1,348 1,061 7,780 3,575,475 3,583,255 — Commercial and industrial loans: Commercial term 425 567 829 1,821 180,815 182,636 — Commercial lines of credit 250 — 182 432 181,462 181,894 — International loans — — — — 34,622 34,622 — Leases receivable 2,295 944 3,554 6,793 290,491 297,284 Consumer loans — — — — 17,019 17,019 — Total $ 8,341 $ 2,859 $ 5,626 $ 16,826 $ 4,279,884 $ 4,296,710 $ — December 31, 2016 Real estate loans: Commercial property Retail $ 9 $ 137 $ 234 $ 380 $ 857,249 $ 857,629 $ — Hotel/motel 1,037 46 600 1,683 647,857 649,540 — Other 677 722 1,237 2,636 1,365,140 1,367,776 — Construction — — — — 55,962 55,962 — Residential property 730 89 423 1,242 336,549 337,791 — Total real estate loans 2,453 994 2,494 5,941 3,262,757 3,268,698 — Commercial and industrial loans: Commercial term 484 42 111 637 137,395 138,032 — Commercial lines of credit — — — — 136,231 136,231 — International loans 80 — — 80 25,741 25,821 — Leases receivable 2,090 1,043 385 3,518 239,776 243,294 Consumer loans 170 — — 170 22,660 22,830 — Total $ 5,277 $ 2,079 $ 2,990 $ 10,346 $ 3,824,560 $ 3,834,906 $ —
PCI Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Credit Quality of Loans and Leases Portfolios	As of December 31, 2017 and 2016, pass/pass-watch, special mention and classified (substandard and doubtful) PCI loans, disaggregated by loan class, were as follows: December 31, 2017 Pass/Pass-Watch Special Mention Classified Total Allowance Total (In thousands) Real estate loans: Commercial property Retail $ 220 $ — $ 1,425 $ 1,645 $ 31 $ 1,614 Hotel/motel 169 96 1,377 $ 1,642 129 1,513 Other 1 232 3,188 $ 3,421 16 3,405 Residential property 951 — — $ 951 83 868 Total real estate loans 1,341 328 5,990 7,659 259 7,400 Commercial and industrial loans: Commercial term — — 49 $ 49 41 8 Consumer loans — — 40 $ 40 20 20 Total PCI loans $ 1,341 $ 328 $ 6,079 $ 7,748 $ 320 $ 7,428 December 31, 2016 Pass/Pass-Watch Special Mention Classified Total Allowance Amount Total PCI Loans (In thousands) Real estate loans: Commercial property Retail $ — $ — $ 2,324 $ 2,324 $ 122 $ 2,202 Hotel/motel 177 — 1,441 $ 1,618 138 1,480 Other — 1,180 3,579 $ 4,759 590 4,169 Residential property 976 — — $ 976 72 904 Total real estate loans 1,153 1,180 7,344 9,677 922 8,755 Commercial and industrial loans: Commercial term — — 136 136 41 95 Consumer loans — — 50 50 8 42 Total PCI loans $ 1,153 $ 1,180 $ 7,530 $ 9,863 $ 971 $ 8,892
Analysis of Gross Loans and Leases, Disaggregated by Loan Class	The following table presents a summary of the borrowers’ underlying payment status of PCI loans as of the dates indicated: 30-59 Days Past Due 60-89 Days Past Due 90 Days or Total Past Due Current Total Allowance Total (In thousands) December 31, 2017 Real estate loans: Commercial property Retail $ — $ — $ 434 $ 434 $ 1,211 $ 1,645 $ 31 $ 1,614 Hotel/motel — 168 — 168 1,474 1,642 129 1,513 Other — — 96 96 3,325 3,421 16 3,405 Residential property — — — — 951 951 83 868 Total real estate loans — 168 530 698 6,961 7,659 259 7,400 Commercial and industrial loans: Commercial term 5 — — 5 44 49 41 8 Consumer loans — — — — 40 40 20 20 Total PCI loans $ 5 $ 168 $ 530 $ 703 $ 7,045 $ 7,748 $ 320 $ 7,428 December 31, 2016 Real estate loans: Commercial property Retail $ 797 $ — $ 238 $ 1,035 $ 1,289 $ 2,324 $ 122 $ 2,202 Hotel/motel 178 — — 178 1,440 1,618 138 1,480 Other — — 123 123 4,636 4,759 590 4,169 Residential property — — — — 976 976 72 904 Total real estate loans 975 — 361 1,336 8,341 9,677 922 8,755 Commercial and industrial loans: Commercial term — — 6 6 130 136 41 95 Consumer loans — — 50 50 — 50 8 42 Total PCI loans $ 975 $ — $ 417 $ 1,392 $ 8,471 $ 9,863 $ 971 $ 8,892

Servicing Assets and Liabilit37

Servicing Assets and Liabilities (Tables)	12 Months Ended
	Dec. 31, 2017
Transfers and Servicing [Abstract]
Schedule of changes in Servicing Assets	The changes in servicing assets and liabilities for the years ended December 31, 2017 and 2016 were as follows: As of December 31, 2017 2016 (In thousands) Servicing assets: Balance at beginning of period $ 10,564 $ 11,744 Addition related to sale of SBA loans 2,590 2,184 Amortization (3,266 ) (3,364 ) Reversal of allowance 330 — Balance at end of period $ 10,218 $ 10,564 Servicing liabilities: Balance at beginning of period $ 3,143 $ 4,784 Amortization (859 ) (1,641 ) Reversal of allowance (67 ) — Balance at end of period $ 2,217 $ 3,143
Schedule of changes in Servicing Liabilities	The changes in servicing assets and liabilities for the years ended December 31, 2017 and 2016 were as follows: As of December 31, 2017 2016 (In thousands) Servicing assets: Balance at beginning of period $ 10,564 $ 11,744 Addition related to sale of SBA loans 2,590 2,184 Amortization (3,266 ) (3,364 ) Reversal of allowance 330 — Balance at end of period $ 10,218 $ 10,564 Servicing liabilities: Balance at beginning of period $ 3,143 $ 4,784 Amortization (859 ) (1,641 ) Reversal of allowance (67 ) — Balance at end of period $ 2,217 $ 3,143

Premises and Equipment (Tables)

Premises and Equipment (Tables)	12 Months Ended
	Dec. 31, 2017
Property, Plant and Equipment [Abstract]
Summary of Major Components of Premises and Equipment	The following is a summary of the major components of premises and equipment: As of December 31, 2017 2016 (In thousands) Land $ 8,470 $ 8,750 Building and improvements 17,261 18,313 Furniture and equipment 21,271 20,668 Leasehold improvements 11,571 11,833 Leased equipment 879 880 59,452 60,444 Accumulated depreciation and amortization (32,797 ) (31,383 ) Impairment reserve — (363 ) Total premises and equipment, net $ 26,655 $ 28,698

Intangible Assets (Tables)

Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Summary of Goodwill and Other Intangible Assets	Company's intangible assets were as follows for the periods indicated: December 31, 2017 December 31, 2016 Amortization Gross Accumulated Net Gross Accumulated Net (In thousands) Core deposit intangible 10 years $ 2,213 $ (1,119 ) $ 1,094 $ 2,213 $ (838 ) $ 1,375 Third-party originators intangible 7 years $ 483 $ (64 ) $ 419 $ 483 $ — $ 483 Goodwill N/A $ 11,031 $ — $ 11,031 $ 11,031 $ — $ 11,031 Total intangible assets $ 13,727 $ (1,183 ) $ 12,544 $ 13,727 $ (838 ) $ 12,889
Estimated Future Amortization Expense Related to Other Intangible Assets	Intangibles amortization expense for the years ended December 31, 2017 , 2016 and 2015 was $345,000 , $326,000 and $379,000 , respectively, and estimated future amortization expense related to CDI and the third-party originators intangible for each of the next five years is as follows: Year Ending December 31, Amount (In thousands) 2018 $ 362 2019 309 2020 261 2021 216 2022 171 Thereafter 194

Deposits (Tables)

Deposits (Tables)	12 Months Ended
	Dec. 31, 2017
Banking and Thrift [Abstract]
Scheduled Maturities of Time Deposits	At December 31, 2017 , the scheduled maturities of time deposits are as follows: Year Ending December 31, Time Deposits of $250,000 or More Other Time Deposits Total (In thousands) 2018 $ 364,225 $ 872,155 $ 1,236,380 2019 94,735 45,792 140,527 2020 1,619 21,576 23,195 2021 1,650 12,935 14,585 2022 — 1,645 1,645 Total $ 462,229 $ 954,103 $ 1,416,332
Summary of Interest Expense on Deposits	A summary of interest expense on deposits was as follows for the periods indicated: Year Ended December 31, 2017 2016 2015 (In thousands) Demand – interest-bearing $ 74 $ 75 $ 114 Money market and savings 12,515 6,470 4,195 Time deposits of $100,000 or more 10,471 6,605 6,639 Other time deposits 3,029 3,420 4,462 Total interest expense on deposits $ 26,089 $ 16,570 $ 15,410

Borrowings (Tables)

Borrowings (Tables)	12 Months Ended
	Dec. 31, 2017
Federal Home Loan Banks [Abstract]
FHLB Advances	Borrowings consisted of the following: As of December 31, 2017 2016 (In thousands) FHLB advances $ 150,000 $ 315,000 Total FHLB advances $ 150,000 $ 315,000
Summary of Contractual Maturities Pertaining to FHLB	FHLB advances represent collateralized obligations with the FHLB. The following is a summary of contractual maturities pertaining to FHLB advances: Year of Maturity Amount Weighted- (In thousands) 2018 $ 150,000 1.41 % Total $ 150,000 1.41 %
Summary of Financial Data Pertaining to Federal Home Loan Bank Advances	The following is financial data pertaining to overnight FHLB advances: As of December 31, 2017 2016 2015 (In thousands) Weighted-average interest rate at end of year 1.41 % 0.55 % 0.27 % Weighted-average interest rate during the year 0.90 % 0.45 % 0.20 % Average balance of FHLB advances $ 119,041 $ 196,708 $ 38,110 Maximum amount outstanding at any month-end $ 330,000 $ 320,000 $ 180,000

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Reconciliation of Unrecognized Tax Benefits	A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows: Year Ended December 31, 2017 2016 2015 (In thousands) Unrecognized tax benefits at beginning of year $ 1,039 $ 934 $ 1,765 Gross increases for tax positions of prior years — 105 — Lapse of statute of limitations — — (831 ) Unrecognized tax benefits at end of year $ 1,039 $ 1,039 $ 934
Summary of Provision (Benefit) for Income Taxes	A summary of the provision for income taxes was as follows: Year Ended December 31, 2017 2016 2015 (In thousands) Current expense: Federal $ 20,924 $ 19,802 $ 14,755 State 6,804 6,503 5,084 Total current expense 27,728 26,305 19,839 Deferred expense (benefit): Federal 14,623 4,410 13,663 State (1,727 ) 2,184 4,680 Total deferred expense 12,896 6,594 18,343 Provision for income taxes $ 40,624 $ 32,899 $ 38,182
Summary of Deferred Tax Assets and Liabilities	Deferred tax assets and liabilities were as follows: Year Ended December 31, 2017 2016 2015 (In thousands) Deferred tax assets: Allowance for loan and lease losses $ 9,282 $ 13,932 $ 18,205 Depreciation 192 — — Purchase accounting 4,685 7,492 13,156 Net operating loss carryforward 18,648 16,876 21,511 Unrealized loss on securities available for sale 919 1,695 859 Indemnified assets 701 1,441 152 Tax credit 1,241 3,516 3,939 State taxes 1,489 2,231 1,539 Other 3,724 5,726 5,040 Total deferred tax assets 40,881 52,909 64,401 Deferred tax liabilities: Mark to market (4,879 ) (3,960 ) (10,469 ) Depreciation — (396 ) (705 ) Other (797 ) (1,190 ) (1,132 ) Total deferred tax liabilities (5,676 ) (5,546 ) (12,306 ) Valuation Allowance (2,750 ) (1,031 ) — Net deferred tax assets $ 32,455 $ 46,332 $ 52,095
Reconciliation between Federal Statutory Income Tax Rate and Effective Tax Rate	Reconciliation between the federal statutory income tax rate and the effective tax rate is shown in the following table: Year Ended December 31, 2017 2016 2015 Federal statutory income tax rate 35.00 % 35.00 % 35.00 % State taxes, net of federal tax benefits 6.64 % 7.04 % 8.32 % Tax-exempt municipal securities (0.24 )% (0.26 )% (0.26 )% Tax credit - federal (2.37 )% (2.50 )% (2.51 )% Federal rate adjustment, net of federal benefit of state 4.18 % — % — % Other (0.58 )% (2.48 )% 0.95 % Effective tax rate 42.63 % 36.80 % 41.50 %

Accumulated Other Comprehensi43

Accumulated Other Comprehensive Income (Loss) (Tables)	12 Months Ended
	Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Activity in Accumulated Other Comprehensive Income	Activity in accumulated other comprehensive income for the year ended December 31, 2017 , 2016 and 2015 was as follows: Unrealized Gains Unrealized Gains Tax Benefit Total (In thousands) For the year ended December 31, 2017 Balance at beginning of period $ (4,089 ) $ — $ 1,695 $ (2,394 ) Other comprehensive loss before reclassification 2,649 — (376 ) $ 2,273 Reclassification from accumulated other comprehensive loss (1,748 ) — — $ (1,748 ) Period change 901 — (376 ) $ 525 Balance at end of period $ (3,188 ) $ — $ 1,319 $ (1,869 ) For the year ended December 31, 2016 Balance at beginning of period $ (2,331 ) $ 9 $ 2,007 $ (315 ) Other comprehensive loss before reclassification (1,712 ) (9 ) (312 ) $ (2,033 ) Reclassification from accumulated other comprehensive income (46 ) — — $ (46 ) Period change (1,758 ) (9 ) (312 ) (2,079 ) Balance at end of period $ (4,089 ) $ — $ 1,695 $ (2,394 ) For the year ended December 31, 2015 Balance at beginning of period $ (985 ) $ 16 $ 1,432 $ 463 Other comprehensive (loss) income before reclassification 5,265 (7 ) 575 $ 5,833 Reclassification from accumulated other comprehensive loss (6,611 ) — $ (6,611 ) Period change (1,346 ) (7 ) 575 (778 ) Balance at end of period $ (2,331 ) $ 9 $ 2,007 $ (315 )

Regulatory Matters (Tables)

Regulatory Matters (Tables)	12 Months Ended
	Dec. 31, 2017
Banking and Thrift [Abstract]
Capital Ratios of Hanmi Financial and Bank	The capital ratios of Hanmi Financial and the Bank as of December 31, 2017 and 2016 were as follows: Actual Minimum Minimum to Be Amount Ratio Amount Ratio Amount Ratio (In thousands) December 31, 2017 Total capital (to risk-weighted assets): Hanmi Financial $ 684,272 15.50 % $ 353,171 8.00 % N/A N/A Hanmi Bank $ 670,896 15.20 % $ 353,091 8.00 % $ 441,364 10.00 % Tier 1 capital (to risk-weighted assets): Hanmi Financial $ 553,970 12.55 % $ 264,878 6.00 % N/A N/A Hanmi Bank $ 638,557 14.47 % $ 264,818 6.00 % $ 353,091 8.00 % Common equity Tier 1 capital (to risk-weighted assets): Hanmi Financial $ 537,950 12.19 % $ 198,658 4.50 % N/A N/A Hanmi Bank $ 638,557 14.47 % $ 198,614 4.50 % $ 286,886 6.50 % Tier 1 capital (to average assets): Hanmi Financial $ 553,970 10.79 % $ 205,344 4.00 % N/A N/A Hanmi Bank $ 638,557 12.44 % $ 205,385 4.00 % $ 256,731 5.00 % December 31, 2016 Total capital (to risk-weighted assets): Hanmi Financial $ 554,089 13.86 % $ 319,901 8.00 % N/A N/A Hanmi Bank $ 544,759 13.64 % $ 319,520 8.00 % $ 399,399 10.00 % Tier 1 capital (to risk-weighted assets): Hanmi Financial $ 520,477 13.02 % $ 239,926 6.00 % N/A N/A Hanmi Bank $ 511,146 12.80 % $ 239,640 6.00 % $ 319,520 8.00 % Common equity Tier 1 capital (to risk-weighted assets): Hanmi Financial $ 509,239 12.73 % $ 179,944 4.50 % N/A N/A Hanmi Bank $ 511,146 12.80 % $ 179,730 4.50 % $ 259,610 6.50 % Tier 1 capital (to average assets): Hanmi Financial $ 520,477 11.53 % $ 180,581 4.00 % N/A N/A Hanmi Bank $ 511,146 11.33 % $ 180,411 4.00 % $ 225,514 5.00 %

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2017
Fair Value Disclosures [Abstract]
Assets and Liabilities Measured at Fair Value on Recurring Basis	As of December 31, 2017 and 2016 , assets and liabilities measured at fair value on a recurring basis are as follows: Level 1 Level 2 Level 3 Quoted Prices in Significant Significant Balance (In thousands) December 31, 2017 Assets: Securities available for sale: Mortgage-backed securities $ — $ 303,609 $ — $ 303,609 Collateralized mortgage obligations — 117,768 — 117,768 U.S. government agency securities — 7,414 — 7,414 Municipal bonds-tax exempt — 127,475 — 127,475 U.S. treasury securities 152 — — 152 Mutual funds 22,386 — — 22,386 Total securities available for sale $ 22,538 $ 556,266 $ — $ 578,804 December 31, 2016 Assets: Securities available for sale: Mortgage-backed securities $ — $ 229,630 $ — $ 229,630 Collateralized mortgage obligations — 76,451 — 76,451 U.S. government agency securities — 7,441 — 7,441 SBA loan pools securities — 4,146 — 4,146 Municipal bonds-tax exempt — 158,030 — 158,030 Municipal bonds-taxable — 13,701 — 13,701 Corporate bonds — 5,015 — 5,015 U.S. treasury securities 156 — — 156 Mutual funds 22,394 — — 22,394 Total securities available for sale $ 22,550 $ 494,414 $ — $ 516,964
Assets and Liabilities Measured at Fair Value on Non-Recurring Basis	As of December 31, 2017 and 2016 , assets and liabilities measured at fair value on a non-recurring basis are as follows: Level 1 Level 2 Level 3 Quoted Prices in Significant Significant Loss During the (In thousands) December 31, 2017 Assets: Impaired loans (excluding PCI loans) (1) $ — $ 6,121 $ 2,436 $ 2,730 OREO (2) — 1,946 — — December 31, 2016 Assets: Impaired loans (3) $ — $ 15,257 $ 6,767 $ 868 OREO (4) — 7,484 — — (1) Includes real estate loans of $6.7 million , and commercial and industrial loans of $1.7 million . (2) Includes properties from the foreclosure of commercial property loans of $237 thousand and residential property loans of $1.7 million . (3) Includes real estate loans of $17.8 million , commercial and industrial loans of $3.8 million , and consumer loans of $419 thousand . (4) Includes properties from the foreclosure of commercial property loans of $5.4 million and residential property loans of $2.1 million .
Estimated Fair Values of Financial Instruments	The estimated fair values of financial instruments were as follows: December 31, 2017 Carrying Fair Value Level 1 Level 2 Level 3 (In thousands) Financial assets: Cash and due from banks $ 153,826 $ 153,826 $ — $ — Securities available for sale 578,804 22,538 556,266 — Loans and leases receivable, net of allowance for loan and lease losses 4,273,415 — — 4,213,689 Loans held for sale 6,394 — 6,394 — Accrued interest receivable 12,770 12,770 — — FHLB stock 16,385 — 16,385 — Financial liabilities: Noninterest-bearing deposits 1,312,274 — 1,312,274 — Interest-bearing deposits 3,036,380 — — 2,973,139 Borrowings 267,270 — — 267,270 Accrued interest payable 5,309 5,309 — — Off-balance sheet items: Commitments to extend credit 318,634 — — 318,634 Standby letters of credit 19,294 — — 19,294 Commercial letters of credit 9,308 — — 9,308 December 31, 2016 Carrying Fair Value Level 1 Level 2 Level 3 (In thousands) Financial assets: Cash and due from banks $ 147,235 $ 147,235 $ — $ — Securities available for sale 516,964 22,550 494,414 — Loans receivable, net of allowance for loan losses 3,812,340 — — 3,789,579 Loans held for sale 9,316 — 9,316 — Accrued interest receivable 10,987 10,987 — — FHLB stock 16,385 — 16,385 — Financial liabilities: Noninterest-bearing deposits 1,203,240 — 1,203,240 — Interest-bearing deposits 2,606,497 — — 2,541,929 Borrowings 333,978 — — 333,978 Accrued interest payable 2,567 2,567 — — Off-balance sheet items: Commitments to extend credit 310,987 — — 310,987 Standby letters of credit 15,669 — — 15,669 Commercial letters of credit 4,215 — — 4,215

Share-based Compensation (Table

Share-based Compensation (Tables)	12 Months Ended
	Dec. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-Based Compensation Expense and Related Tax Benefits	The table below provides the share-based compensation expense and related tax benefits for the periods indicated: Year Ended December 31, 2017 2016 2015 (In thousands) Share-based compensation expense $ 2,893 $ 3,008 $ 2,241 Related tax benefits $ 1,179 $ 1,191 $ 755
Unrecognized Share-Based Compensation Expense	As of December 31, 2017 , unrecognized share-based compensation expense was as follows Unrecognized Average Expected (In thousands) Stock option awards $ 11 0.4 years Restricted stock awards 4,648 1.7 years Total unrecognized share-based compensation expense $ 4,659 1.7 years
Weighted-Average Assumptions Used to Estimate Fair Value Per Share of Options Granted	The weighted-average fair value per share of options granted was estimated on the date of grant using the Black-Scholes option-pricing model with the following weighted-average assumptions: Year Ended December 31, 2015 Weighted-average assumption Dividend yield 1.80 % Expected volatility 25.00 % Expected term 3 years Risk-free interest rate 1.11 %
Summary of Information under Plans	The following information under the Plans is presented for the periods indicated: Year Ended December 31, 2017 2016 2015 (In thousands, except per share data) Grant date fair value of options granted $ — $ — $ 78 Fair value of options vested $ 820 $ 2,322 $ 2,668 Total intrinsic value of options exercised (1) $ 432 $ 1,862 $ 488 Cash received from options exercised $ 288 $ 1,453 $ 616 Weighted-average estimated fair value per share of options granted $ — $ — $ 3.62 (1) Intrinsic value represents the difference between the closing stock price on the exercise date and the exercise price, multiplied by the number of options.
Summary of Stock Option Transactions under Plans	The following is a summary of stock option transactions under the Plans for the periods indicated: Year Ended December 31, 2017 2016 2015 Number of Shares Weighted- Average Exercise Price Per Share Number of Shares Weighted- Average Exercise Price Per Share Number of Shares Weighted- Average Exercise Price Per Share Options outstanding at beginning of period 387,901 $ 17.49 510,148 $ 24.38 603,872 $ 23.78 Options granted — $ — — $ — 28,000 $ 23.47 Options exercised (23,813 ) $ 12.21 (94,997 ) $ 15.29 (46,516 ) $ 13.24 Options forfeited — $ — (125 ) $ 144.00 (71,608 ) $ 20.59 Options expired — $ — (27,125 ) $ 154.09 (3,600 ) $ 136.79 Options outstanding at end of period 364,088 $ 17.86 387,901 $ 17.49 510,148 $ 24.38 Options exercisable at end of period 354,753 $ 17.71 341,561 $ 16.85 333,460 $ 27.16
Summary of Transactions for Non-Vested Stock Options	The following is a summary of transactions for non-vested stock options under the Plans for the periods indicated: Year Ended December 31, 2017 2016 2015 Number of Weighted- Number of Weighted- Number of Weighted- Non-vested options outstanding at beginning of period 46,340 $ 22.42 176,688 $ 19.13 379,106 $ 18.11 Options granted — $ — — $ — 28,000 $ 23.47 Options vested (37,005 ) $ 22.16 (130,223 ) $ 17.83 (158,810 ) $ 16.80 Options forfeited — $ — (125 ) $ 144.00 (71,608 ) $ 20.59 Non-vested options outstanding at end of period 9,335 $ 23.47 46,340 $ 22.42 176,688 $ 19.13
Summary of Stock Options Outstanding under Plans	As of December 31, 2017 , stock options outstanding under the Plans were as follows: Options Outstanding Options Exercisable Range of Exercise Prices Number of Intrinsic (1) Weighted- Weighted- Number of Intrinsic (1) Weighted- Weighted- (In thousands except share and per share data) $10.80 to $14.99 13,088 $ 235 $ 12.37 4.6 years 13,088 $ 235 $ 12.37 4.6 years $15.00 to $19.99 255,000 3,550 16.43 5.7 years 255,000 3,550 16.43 5.7 years $20.00 to $24.83 96,000 763 22.41 6.7 years 86,665 698 22.29 6.6 years 364,088 $ 4,548 $ 17.86 354,753 $ 4,483 $ 17.71 (1) Intrinsic value represents the difference between the closing stock price on the last trading day of the period, which was $30.35 as of December 31, 2017 , and the exercise price, multiplied by the number of options.
Schedule of Restricted Stock Awards under 2013 Plan	The table below provides information for restricted stock awards under the 2013 Plan for the periods indicated: 2017 2016 2015 Number of Weighted- Number of Weighted- Number of Weighted- Restricted stock at beginning of period 343,958 $ 16.60 137,114 $ 20.74 173,222 $ 19.58 Restricted stock granted 127,239 $ 31.06 287,179 $ 15.52 58,092 22.53 Restricted stock vested (139,298 ) $ 18.73 (77,515 ) $ 19.75 (68,017 ) $ 19.16 Restricted stock forfeited (14,116 ) $ 24.73 (2,820 ) $ 21.58 (26,183 ) $ 21.16 Restricted stock at end of period 317,783 $ 21.09 343,958 $ 16.60 137,114 $ 20.74

Earnings per Share (Tables)

Earnings per Share (Tables)	12 Months Ended
	Dec. 31, 2017
Earnings Per Share [Abstract]
Reconciliation of Components Used to Derive Basic and Diluted EPS	The following table is a reconciliation of the components used to derive basic and diluted EPS for the periods indicated: Net Income (Numerator) Weighted- Average Shares (Denominator) Per Share Amount (1) (In thousands, except share and per share data) Year Ended December 31, 2017 Basic EPS Net income $ 54,660 32,071,585 $ 1.71 Less: Income allocated to unvested restricted stock 339 32,071,585 0.01 Basic EPS $ 54,321 32,071,585 $ 1.70 Effect of dilutive securities - options, warrants and unvested restricted stock 178,333 Diluted EPS Net income $ 54,660 32,249,918 $ 1.70 Less: Income allocated to unvested restricted stock 339 32,249,918 0.01 Diluted EPS $ 54,321 32,249,918 $ 1.69 Year Ended December 31, 2016 Basic EPS Net income $ 56,489 31,899,582 $ 1.77 Less: Income allocated to unvested restricted stock 457 31,899,582 0.01 Basic EPS $ 56,032 31,899,582 $ 1.76 Effect of dilutive securities - options, warrants and unvested restricted stock 149,122 Diluted EPS Net income $ 56,489 32,048,704 $ 1.76 Less: Income allocated to unvested restricted stock 457 32,048,704 0.01 Diluted EPS $ 56,032 32,048,704 $ 1.75 Year Ended December 31, 2015 Basic EPS Income from continuing operations, net of taxes $ 53,823 31,788,215 $ 1.69 Loss from discontinued operations, net of taxes 145 31,788,215 — Basic EPS $ 53,678 31,788,215 $ 1.69 Effect of dilutive securities - options, warrants and unvested restricted stock 88,605 Diluted EPS Income from continuing operations, net of taxes $ 53,823 31,876,820 $ 1.68 Loss from discontinued operations, net of taxes 145 31,876,820 — Diluted EPS $ 53,678 31,876,820 $ 1.68 (1) Per share amounts may not be able to be recalculated using net income and weighted-average shares presented above due to rounding.

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
Future Minimum Annual Rental Commitments under Non-Cancelable Operating Leases	We lease our premises under non-cancelable operating leases. At December 31, 2017 , future minimum annual rental commitments under these non-cancelable operating leases, with initial or remaining terms of one year or more, were as follows: Year Ended December 31, Amount (In thousands) 2018 $ 5,621 2019 4,759 2020 4,244 2021 2,746 2022 2,138 Thereafter 7,743 Total $ 27,251

Off-Balance Sheet Commitments (

Off-Balance Sheet Commitments (Tables)	12 Months Ended
	Dec. 31, 2017
Risks and Uncertainties [Abstract]
Distribution of Undisbursed Loan Commitments	The following table shows the distribution of undisbursed loan commitments as of the dates indicated: December 31, 2017 December 31, 2016 (In thousands) Commitments to extend credit $ 318,634 $ 310,987 Standby letters of credit 19,294 15,669 Commercial letters of credit 9,308 4,215 Total undisbursed loan commitments $ 347,236 $ 330,871
Summary of Valuation Allowance	Activity in the allowance for off-balance sheet items was as follows for the periods indicated: As of and for the Year Ended December 31, 2017 2016 2015 (In thousands) Allowance for off-balance sheet items: Balance at beginning of period $ 1,184 $ 986 $ 1,366 Provision (income) 112 198 (380 ) Balance at end of period $ 1,296 $ 1,184 $ 986

Condensed Financial Informati50

Condensed Financial Information of Parent Company (Tables)	12 Months Ended
	Dec. 31, 2017
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Balance Sheets of Parent Company	Year Ended December 31, 2017 2016 (In thousands) Assets Cash $ 13,087 $ 3,885 Investment in consolidated subsidiaries 666,371 540,672 Other assets 831 5,572 Total assets $ 680,289 $ 550,129 Liabilities and Stockholders’ Equity Liabilities: Subordinated debentures $ 117,270 $ 18,978 Other liabilities 542 126 Total liabilities 117,812 19,104 Stockholders’ equity 562,477 531,025 Total liabilities and stockholders’ equity $ 680,289 $ 550,129
Statement of Income of Parent Company	Year Ended December 31, 2017 2016 2015 (In thousands) Dividends from bank subsidiary $ 22,619 $ 8,978 $ 15,129 Interest expense (5,353 ) (825 ) (623 ) Other expense (5,291 ) (5,188 ) (4,639 ) Income before taxes and undistributed income 11,975 2,965 9,867 Income tax benefit 7,513 2,382 2,140 Income before undistributed income of subsidiary 19,488 5,347 12,007 Equity in undistributed earnings of subsidiary 35,172 51,142 41,816 Net income $ 54,660 $ 56,489 $ 53,823
Statement of Cash Flows of Parent Company	Year Ended December 31, 2017 2016 2015 (In thousands) Cash Flows from Operating Activities: Net income $ 54,660 $ 56,489 $ 53,823 Adjustments to reconcile net income to net cash used in operating activities: Income from subsidiary (35,172 ) (51,141 ) (56,840 ) Amortization of subordinated debentures 463 275 159 Share-based compensation expense 2,893 3,008 2,241 Change in other assets and liabilities 5,156 (95 ) (2,680 ) Net cash provided by (used in) operating activities 28,000 8,536 (3,297 ) Cash Flows from Investing Activities: Cash paid for repurchases of vested shares due to employee tax liability — — — Cash acquired in acquisition, net of cash consideration paid — — — Proceeds from Hanmi Bank — — 12,782 Payments to Hanmi Bank (90,000 ) — — Net cash (used in) provided by investing activities (90,000 ) — 12,782 Cash Flows from Financing Activities: Proceeds from exercise of stock options and stock warrants 288 1,453 616 Proceeds from issuance of long-term debt 97,828 — — Cash paid for repurchases of vested shares due to employee tax liability (1,103 ) (579 ) (349 ) Cash dividend paid (25,811 ) (21,185 ) (12,780 ) Net cash provided (used in) by financing activities 71,202 (20,311 ) (12,513 ) Net increase (decrease) in cash 9,202 (11,775 ) (3,028 ) Cash at beginning of year 3,885 15,660 18,688 Cash at end of year $ 13,087 $ 3,885 $ 15,660

Quarterly Financial Data (Una51

Quarterly Financial Data (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Summary of Quarterly Financial Data	Summarized quarterly financial data is shown in the following tables: Quarter Ended March 31 June 30 September 30 December 31 (In thousands, except per share data) 2017: Interest and dividend income $ 48,349 $ 51,326 $ 53,862 $ 55,784 Interest expense 5,995 8,148 8,936 9,440 Net interest income before provision for loan and lease losses 42,354 43,178 44,926 46,344 Loan and lease loss provision (income) (80 ) 422 269 220 Non-interest income 7,217 9,702 8,816 7,680 Non-interest expense 27,240 28,944 28,660 29,258 Income before provision for income taxes 22,411 23,514 24,813 24,546 Provision for income taxes 8,628 9,057 9,890 13,049 Net income $ 13,783 $ 14,457 $ 14,923 $ 11,497 Basic earnings per share $ 0.43 $ 0.45 $ 0.46 $ 0.36 Diluted earnings per share $ 0.43 $ 0.45 $ 0.46 $ 0.36 2016: Interest and dividend income $ 42,674 $ 44,159 $ 44,325 $ 47,313 Interest expense 4,105 4,179 4,743 5,247 Net interest income before provision for loan and lease losses 38,569 39,980 39,582 42,066 Loan and lease loss provision (income) (1,525 ) (1,515 ) (1,450 ) 151 Non-interest income 6,961 9,373 8,674 8,067 Non-interest expense 26,068 27,863 28,337 25,955 Income before provision for income taxes 20,987 23,005 21,369 24,027 Provision for income taxes 6,183 8,857 8,248 9,611 Net income $ 14,804 $ 14,148 $ 13,121 $ 14,416 Basic earnings per share $ 0.46 $ 0.44 $ 0.41 $ 0.45 Diluted earnings per share $ 0.46 $ 0.44 $ 0.41 $ 0.45

Summary of Significant Accoun52

Summary of Significant Accounting Policies - Additional Information (Detail) $ in Thousands	3 Months Ended	12 Months Ended
	Sep. 30, 2016USD ($)	Dec. 31, 2017USD ($)branchloan_pool	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)
Financing Receivable, Recorded Investment, Past Due [Line Items]
Proceeds from redemption of FRB stock | $	$ 14,400	$ 0	$ 14,423	$ 0
Allowance for loan losses of loans receivable | $		$ 31,043	$ 32,429
Estimated loss emergence period		2 years 6 months	2 years 6 months	1 year
General loan pools [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of loan pools | loan_pool		14
Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Delinquency period of loans with respect to interest or principal for discontinuance of accrual of interest income (less than)		90 days
Cash and Cash Equivalents [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Delinquency period of loans with respect to interest or principal for discontinuance of accrual of interest income (less than)		90 days
Full Service [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of branches | branch		40
Loan Production [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of branches | branch		8
Equipment Financing Receivable [Member] | Minimum [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Intangible asset amortization period		1 year
Equipment Financing Receivable [Member] | Maximum [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Intangible asset amortization period		7 years

Summary of Significant Accoun53

Summary of Significant Accounting Policies - Useful Lives for Principal Classes of Assets (Detail)	12 Months Ended
	Dec. 31, 2017
Leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment useful life	Term of lease or useful life, whichever is shorter
Software [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment useful life	3 years
Minimum [Member] | Buildings and improvements [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment useful life	10 years
Minimum [Member] | Furniture and equipment [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment useful life	3 years
Maximum [Member] | Buildings and improvements [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment useful life	30 years
Maximum [Member] | Furniture and equipment [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment useful life	10 years

Acquisition - Additional Inform

Acquisition - Additional Information (Detail) - USD ($) $ in Thousands	Oct. 27, 2016	Aug. 31, 2014	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Business Acquisition [Line Items]
Goodwill			$ 11,031	$ 11,031
Banc of California Leases Acquisition [Member]
Business Acquisition [Line Items]
Cash consideration paid	$ 240,800
Other tangible and intangible assets acquired	12,600
Goodwill	11,000
Central Bancorp, Inc [Member]
Business Acquisition [Line Items]
Intangible asset amortization period		10 years
Core deposit intangible		$ 2,200
Amortization expense of core deposit intangible			280	326	$ 379
Certificates of deposit		11,300
Amortization of certificates of deposit			473	2,700	5,600
Discount on subordinated debentures		$ 8,300
Amortization of subordinated debentures			$ 329	$ 275	$ 176
Lease Intangible Asset [Member] | Banc of California Leases Acquisition [Member]
Business Acquisition [Line Items]
Estimated fair value of acquired intangibles	228,200
Third Party Originators Intangible [Member]
Business Acquisition [Line Items]
Intangible asset amortization period			7 years
Third Party Originators Intangible [Member] | Banc of California Leases Acquisition [Member]
Business Acquisition [Line Items]
Estimated fair value of acquired intangibles	$ 483
Intangible asset amortization period	7 years

Securities - Summary of Investm

Securities - Summary of Investment Securities Available for Sale (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 581,992	$ 521,053
Gross Unrealized Gain	2,096	1,164
Gross Unrealized Loss	5,284	5,253
Estimated Fair Value	578,804	516,964
Collateralized mortgage obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	119,658	77,447
Gross Unrealized Gain	8	6
Gross Unrealized Loss	1,898	1,002
Estimated Fair Value	117,768	76,451
Mortgage-backed securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	306,166	230,489
Gross Unrealized Gain	145	598
Gross Unrealized Loss	2,702	1,457
Estimated Fair Value	303,609	229,630
U.S. government agency securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	7,499	7,499
Gross Unrealized Gain	0	0
Gross Unrealized Loss	85	58
Estimated Fair Value	7,414	7,441
SBA loan pool securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		4,356
Gross Unrealized Gain		0
Gross Unrealized Loss		210
Estimated Fair Value		4,146
Municipal bonds-tax exempt [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	125,601	159,789
Gross Unrealized Gain	1,943	236
Gross Unrealized Loss	69	1,995
Estimated Fair Value	127,475	158,030
Municipal bonds-taxable [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		13,391
Gross Unrealized Gain		319
Gross Unrealized Loss		9
Estimated Fair Value		13,701
Corporate bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		5,010
Gross Unrealized Gain		5
Gross Unrealized Loss		0
Estimated Fair Value		5,015
U.S. treasury securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	152	156
Gross Unrealized Gain	0	0
Gross Unrealized Loss	0	0
Estimated Fair Value	152	156
Other securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	22,916	22,916
Gross Unrealized Gain	0	0
Gross Unrealized Loss	530	522
Estimated Fair Value	$ 22,386	$ 22,394

Securities - Schedule of Amorti

Securities - Schedule of Amortized Cost and Estimated Fair Value of Investment Securities by Contractual Maturity (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Amortized Cost
Within one year	$ 16,951
Over one year through five years	73,659
Over five years through ten years	252,829
Over ten years	238,553
Amortized Cost	581,992	$ 521,053
Estimated Fair Value
Within one year	16,897
Over one year through five years	72,898
Over five years through ten years	251,681
Over ten years	237,328
Total	578,804	516,964
Collateralized mortgage obligations [Member]
Amortized Cost
Amortized Cost	119,658	77,447
Estimated Fair Value
Total	117,768	76,451
Mortgage-backed securities [Member]
Amortized Cost
Amortized Cost	306,166	230,489
Estimated Fair Value
Total	$ 303,609	$ 229,630

Securities - Available for Sale

Securities - Available for Sale Securities, Continuous Unrealized Loss Position, Fair value (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2017USD ($)Security	Dec. 31, 2016USD ($)Security
Summary of Investment Holdings [Line Items]
Available-for-sale, Less Than 12 Months, Gross Unrealized Loss	$ 2,691	$ 4,496
Available-for-sale, Less Than 12 Months, Estimated Fair Value	$ 276,372	$ 320,260
Available-for-sale, Less Than 12 Months, Number of Securities | Security	93	128
Available-for-sale, 12 Months or More, Gross Unrealized Loss	$ 2,593	$ 757
Available-for-sale, 12 Months or More, Estimated Fair Value	$ 138,033	$ 26,991
Available-for-sale, 12 Months or More, Number of Securities | Security	67	15
Available-for-sale, Gross Unrealized Loss	$ 5,284	$ 5,253
Available-for-sale, Estimated Fair Value	$ 414,405	$ 347,251
Available-for-sale, Number of Securities | Security	160	143
Mortgage-backed securities [Member]
Summary of Investment Holdings [Line Items]
Available-for-sale, Less Than 12 Months, Gross Unrealized Loss	$ 1,855	$ 1,345
Available-for-sale, Less Than 12 Months, Estimated Fair Value	$ 197,621	$ 102,647
Available-for-sale, Less Than 12 Months, Number of Securities | Security	66	38
Available-for-sale, 12 Months or More, Gross Unrealized Loss	$ 847	$ 112
Available-for-sale, 12 Months or More, Estimated Fair Value	$ 56,998	$ 11,350
Available-for-sale, 12 Months or More, Number of Securities | Security	25	3
Available-for-sale, Gross Unrealized Loss	$ 2,702	$ 1,457
Available-for-sale, Estimated Fair Value	$ 254,619	$ 113,997
Available-for-sale, Number of Securities | Security	91	41
Collateralized mortgage obligations [Member]
Summary of Investment Holdings [Line Items]
Available-for-sale, Less Than 12 Months, Gross Unrealized Loss	$ 773	$ 676
Available-for-sale, Less Than 12 Months, Estimated Fair Value	$ 65,726	$ 60,786
Available-for-sale, Less Than 12 Months, Number of Securities | Security	20	27
Available-for-sale, 12 Months or More, Gross Unrealized Loss	$ 1,125	$ 326
Available-for-sale, 12 Months or More, Estimated Fair Value	$ 49,986	$ 10,579
Available-for-sale, 12 Months or More, Number of Securities | Security	32	7
Available-for-sale, Gross Unrealized Loss	$ 1,898	$ 1,002
Available-for-sale, Estimated Fair Value	$ 115,712	$ 71,365
Available-for-sale, Number of Securities | Security	52	34
U.S. government agency securities [Member]
Summary of Investment Holdings [Line Items]
Available-for-sale, Less Than 12 Months, Gross Unrealized Loss	$ 15	$ 58
Available-for-sale, Less Than 12 Months, Estimated Fair Value	$ 1,484	$ 7,441
Available-for-sale, Less Than 12 Months, Number of Securities | Security	1	3
Available-for-sale, 12 Months or More, Gross Unrealized Loss	$ 70	$ 0
Available-for-sale, 12 Months or More, Estimated Fair Value	$ 5,930	$ 0
Available-for-sale, 12 Months or More, Number of Securities | Security	2	0
Available-for-sale, Gross Unrealized Loss	$ 85	$ 58
Available-for-sale, Estimated Fair Value	$ 7,414	$ 7,441
Available-for-sale, Number of Securities | Security	3	3
SBA loan pool securities [Member]
Summary of Investment Holdings [Line Items]
Available-for-sale, Less Than 12 Months, Gross Unrealized Loss		$ 0
Available-for-sale, Less Than 12 Months, Estimated Fair Value		$ 0
Available-for-sale, Less Than 12 Months, Number of Securities | Security		0
Available-for-sale, 12 Months or More, Gross Unrealized Loss		$ 210
Available-for-sale, 12 Months or More, Estimated Fair Value		$ 4,146
Available-for-sale, 12 Months or More, Number of Securities | Security		2
Available-for-sale, Gross Unrealized Loss		$ 210
Available-for-sale, Estimated Fair Value		$ 4,146
Available-for-sale, Number of Securities | Security		2
Municipal bonds-tax exempt [Member]
Summary of Investment Holdings [Line Items]
Available-for-sale, Less Than 12 Months, Gross Unrealized Loss	$ 48	$ 1,995
Available-for-sale, Less Than 12 Months, Estimated Fair Value	$ 11,541	$ 125,004
Available-for-sale, Less Than 12 Months, Number of Securities | Security	6	54
Available-for-sale, 12 Months or More, Gross Unrealized Loss	$ 21	$ 0
Available-for-sale, 12 Months or More, Estimated Fair Value	$ 2,737	$ 0
Available-for-sale, 12 Months or More, Number of Securities | Security	2	0
Available-for-sale, Gross Unrealized Loss	$ 69	$ 1,995
Available-for-sale, Estimated Fair Value	$ 14,278	$ 125,004
Available-for-sale, Number of Securities | Security	8	54
Municipal bonds-taxable [Member]
Summary of Investment Holdings [Line Items]
Available-for-sale, Less Than 12 Months, Gross Unrealized Loss		$ 9
Available-for-sale, Less Than 12 Months, Estimated Fair Value		$ 2,904
Available-for-sale, Less Than 12 Months, Number of Securities | Security		2
Available-for-sale, 12 Months or More, Gross Unrealized Loss		$ 0
Available-for-sale, 12 Months or More, Estimated Fair Value		$ 0
Available-for-sale, 12 Months or More, Number of Securities | Security		0
Available-for-sale, Gross Unrealized Loss		$ 9
Available-for-sale, Estimated Fair Value		$ 2,904
Available-for-sale, Number of Securities | Security		2
Other securities [Member]
Summary of Investment Holdings [Line Items]
Available-for-sale, Less Than 12 Months, Gross Unrealized Loss	$ 0	$ 413
Available-for-sale, Less Than 12 Months, Estimated Fair Value	$ 0	$ 21,478
Available-for-sale, Less Than 12 Months, Number of Securities | Security	0	4
Available-for-sale, 12 Months or More, Gross Unrealized Loss	$ 530	$ 109
Available-for-sale, 12 Months or More, Estimated Fair Value	$ 22,382	$ 916
Available-for-sale, 12 Months or More, Number of Securities | Security	6	3
Available-for-sale, Gross Unrealized Loss	$ 530	$ 522
Available-for-sale, Estimated Fair Value	$ 22,382	$ 22,394
Available-for-sale, Number of Securities | Security	6	7

Securities - Additional Informa

Securities - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Schedule of Available-for-sale Securities [Line Items]
Debt and equity securities OTTI charge	$ 0
Impairment charges on securities in continuous unrealized loss position for 12 months or longer	0	$ 0
Net realized gain (loss) on redemption or sale of investment securities	1,748,000	46,000	$ 6,611,000
Net unrealized gains (losses) recognized in earnings resulting from the redemption of investment securities	(1,300,000)	314,000	$ (1,900,000)
Investment securities available-for-sale, market values	578,804,000	516,964,000
Securities Pledged as Collateral [Member]
Schedule of Available-for-sale Securities [Line Items]
Investment securities available-for-sale, market values	130,100,000	133,000,000
Mortgage-backed securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Investment securities available-for-sale, market values	$ 303,609,000	$ 229,630,000

Securities - Realized Gains and

Securities - Realized Gains and Losses on Sales of Investment Securities (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Investments, Debt and Equity Securities [Abstract]
Gross realized gains on sales of investment securities	$ 1,891	$ 396	$ 6,776
Gross realized losses on sales of investment securities	(143)	(350)	(165)
Net realized gains on sales of investment securities	1,748	46	6,611
Proceeds from sales of investment securities	$ 97,271	$ 78,282	$ 456,098

Loans and Leases - Loans Receiv

Loans and Leases - Loans Receivable (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	$ 4,304,458	$ 3,844,769
Allowance for loan and lease losses	(31,043)	(32,429)
Loans and leases receivable, net	4,273,415	3,812,340
Real estate loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	3,590,914	3,278,375
Real estate loans [Member] | Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	915,273	859,953
Real estate loans [Member] | Hotel/motel [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	681,325	651,158
Real estate loans [Member] | Commercial Real Estate Other, Including Gas Stations [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	1,417,273	1,372,535
Real estate loans [Member] | Commercial property loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	3,013,871	2,883,646
Real estate loans [Member] | Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	55,190	55,962
Real estate loans [Member] | Residential property [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	521,853	338,767
Commercial and industrial loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	399,201	300,220
Commercial and industrial loans [Member] | Commercial term [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	182,685	138,168
Commercial and industrial loans [Member] | Commercial lines of credit [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	181,894	136,231
Commercial and industrial loans [Member] | International loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	34,622	25,821
Leases Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	297,284	243,294
Consumer loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	17,059	22,880
Home Equity Line of Credit [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	14,200	17,700
Non-PCI Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	4,296,710	3,834,906
Allowance for loan and lease losses	(30,723)	(31,458)	$ (37,494)
Loans and leases receivable, net	4,265,987	3,803,448
Non-PCI Loans [Member] | Real estate loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	3,583,255	3,268,698
Non-PCI Loans [Member] | Real estate loans [Member] | Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	913,628	857,629
Non-PCI Loans [Member] | Real estate loans [Member] | Hotel/motel [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	679,683	649,540
Non-PCI Loans [Member] | Real estate loans [Member] | Commercial Real Estate Other, Including Gas Stations [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	1,413,852	1,367,776
Non-PCI Loans [Member] | Real estate loans [Member] | Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	1,413,852	1,367,776
Non-PCI Loans [Member] | Real estate loans [Member] | Commercial property loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	3,007,163	2,874,945
Non-PCI Loans [Member] | Real estate loans [Member] | Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	55,190	55,962
Non-PCI Loans [Member] | Real estate loans [Member] | Residential property [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	520,902	337,791
Non-PCI Loans [Member] | Commercial and industrial loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	399,152	300,084
Non-PCI Loans [Member] | Commercial and industrial loans [Member] | Commercial term [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	182,636	138,032
Non-PCI Loans [Member] | Commercial and industrial loans [Member] | Commercial lines of credit [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	181,894	136,231
Non-PCI Loans [Member] | Commercial and industrial loans [Member] | International loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	34,622	25,821
Non-PCI Loans [Member] | Leases Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	297,284	243,294
Non-PCI Loans [Member] | Consumer loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	17,019	22,830
PCI Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	7,748	9,863
Allowance for loan and lease losses	(320)	(971)	(5,441)
Loans and leases receivable, net	7,428	8,892	$ 14,573	$ 43,475
PCI Loans [Member] | Real estate loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	7,659	9,677
Allowance for loan and lease losses	(259)	(922)
Loans and leases receivable, net	7,400	8,755
PCI Loans [Member] | Real estate loans [Member] | Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	1,645	2,324
Allowance for loan and lease losses	(31)	(122)
Loans and leases receivable, net	1,614	2,202
PCI Loans [Member] | Real estate loans [Member] | Hotel/motel [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	1,642	1,618
Allowance for loan and lease losses	(129)	(138)
Loans and leases receivable, net	1,513	1,480
PCI Loans [Member] | Real estate loans [Member] | Commercial Real Estate Other, Including Gas Stations [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	3,421	4,759
PCI Loans [Member] | Real estate loans [Member] | Commercial property loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	6,708	8,701
PCI Loans [Member] | Real estate loans [Member] | Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	0	0
PCI Loans [Member] | Real estate loans [Member] | Residential property [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	951	976
Allowance for loan and lease losses	(83)	(72)
Loans and leases receivable, net	868	904
PCI Loans [Member] | Commercial and industrial loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	49	136
PCI Loans [Member] | Commercial and industrial loans [Member] | Commercial term [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	49	136
Allowance for loan and lease losses	(41)	(41)
Loans and leases receivable, net	8	95
PCI Loans [Member] | Commercial and industrial loans [Member] | Commercial lines of credit [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	0	0
PCI Loans [Member] | Commercial and industrial loans [Member] | International loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	0	0
PCI Loans [Member] | Leases Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	0	0
PCI Loans [Member] | Consumer loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	40	50
Allowance for loan and lease losses	(20)	(8)
Loans and leases receivable, net	$ 20	$ 42

Loans and Leases - Additional I

Loans and Leases - Additional Information (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2017USD ($)PropertySecurityLoan	Dec. 31, 2016USD ($)Property	Dec. 31, 2015USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrued interest receivable	$ 12,770	$ 10,987
Loans receivable	4,273,415	3,812,340
Reclassification from loans receivable to loans held for sale	0	0	$ 360
Sale of loans held for sale	$ 111,977	$ 84,901
Number of real estate properties | Property	6	12
Net carrying value of other real estate property	$ 1,946	$ 7,484
TDR loans receivable	$ 15,400	18,000	17,200
Principal and interest due	6 months
Reserves relating to loans included in allowance for loan losses	$ 2,200	3,400	$ 1,000
Number of loans restructured | SecurityLoan	4
Serviced loans sold to unaffiliated parties	$ 476,500	484,700
Central Bancorp, Inc [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Net carrying value of other real estate property	1,800	5,700
Securities Pledged as Collateral [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	1,100,000	1,000,000
Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Net carrying value of other real estate property	1,100
Loans and Finance Receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrued interest receivable	$ 10,200	$ 8,200

Loans and Leases - Loans Rece62

Loans and Leases - Loans Receivable to Loans Held for Sale (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable, Reclassification From Portfolio Loans To Loans Held For Sale [Roll Forward]
Balance at beginning of period	$ 9,316	$ 2,874
Origination of loans held for sale	109,111	91,367
Reclassification from loans receivable to loans held for sale	0	0	$ 360
Sales of loans held for sale	(111,977)	(84,901)
Principal payoffs and amortization	(56)	(24)
Balance at end of period	6,394	9,316	2,874
Real estate loans [Member]
Financing Receivable, Reclassification From Portfolio Loans To Loans Held For Sale [Roll Forward]
Balance at beginning of period	7,410	840
Origination of loans held for sale	70,710	65,416
Sales of loans held for sale	(74,344)	(58,836)
Principal payoffs and amortization	(30)	(10)
Balance at end of period	3,746	7,410	840
Commercial and industrial loans [Member]
Financing Receivable, Reclassification From Portfolio Loans To Loans Held For Sale [Roll Forward]
Balance at beginning of period	1,906	2,034
Origination of loans held for sale	38,401	25,951
Sales of loans held for sale	(37,633)	(26,065)
Principal payoffs and amortization	(26)	(14)
Balance at end of period	$ 2,648	$ 1,906	$ 2,034

Loans and Leases - Allowance fo

Loans and Leases - Allowance for Loan and Lease Losses (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Allowance for loan losses:
Balance at beginning of period				$ 32,429					$ 32,429
Loan and lease loss provision (income)	$ 220	$ 269	$ 422	(80)	$ 151	$ (1,450)	$ (1,515)	$ (1,525)	831	$ (4,339)	$ (11,614)
Balance at end of period	31,043				32,429				31,043	32,429
Allowance for loan losses [Member]
Allowance for loan losses:
Balance at beginning of period				32,429				42,935	32,429	42,935	52,666
Charge-offs									(5,899)	(8,869)	(3,531)
Recoveries on loans and leases previously charged off									3,682	2,702	5,423
Net loan and lease charge-offs									(2,217)	(6,167)	1,892
Loan and lease loss provision (income)									831	(4,339)	(11,623)
Balance at end of period	31,043				32,429				31,043	32,429	42,935
Non-PCI Loans [Member]
Allowance for loan losses:
Balance at beginning of period				31,458				37,494	31,458	37,494
Charge-offs									(5,899)	(3,736)
Recoveries on loans and leases previously charged off									3,682	2,702
Loan and lease loss provision (income)									1,482	(5,002)
Balance at end of period	30,723				31,458				30,723	31,458	37,494
Non-PCI Loans [Member] | Allowance for loan losses [Member]
Allowance for loan losses:
Balance at beginning of period				31,458				37,494	31,458	37,494	51,640
Charge-offs									(5,899)	(3,736)	(3,531)
Recoveries on loans and leases previously charged off									3,682	2,702	5,423
Net loan and lease charge-offs									(2,217)	(1,034)	1,892
Loan and lease loss provision (income)									1,482	(5,002)	(16,038)
Balance at end of period	30,723				31,458				30,723	31,458	37,494
PCI Loans [Member]
Allowance for loan losses:
Balance at beginning of period				971				5,441	971	5,441
Charge-offs										(5,133)
Loan and lease loss provision (income)									(651)	663
Balance at end of period	320				971				320	971	5,441
PCI Loans [Member] | Allowance for loan losses [Member]
Allowance for loan losses:
Balance at beginning of period				$ 971				$ 5,441	971	5,441	1,026
Charge-offs									0	(5,133)	0
Recoveries on loans and leases previously charged off									0	0	0
Net loan and lease charge-offs									0	(5,133)	0
Loan and lease loss provision (income)									(651)	663	4,415
Balance at end of period	$ 320				$ 971				$ 320	$ 971	$ 5,441

Loans and Leases - Allowance 64

Loans and Leases - Allowance for Loan and Lease Losses by Portfolio Segment (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Allowance for loan losses:
Balance at beginning of period				$ 32,429					$ 32,429
Loan and lease loss provision (income)	$ 220	$ 269	$ 422	(80)	$ 151	$ (1,450)	$ (1,515)	$ (1,525)	831	$ (4,339)	$ (11,614)
Balance at end of period	31,043				32,429				31,043	32,429
Loans receivable:
Balance at end of period	4,304,458				3,844,769				4,304,458	3,844,769
PCI Loans [Member]
Allowance for loan losses:
Balance at beginning of period				971				5,441	971	5,441
Charge-offs										(5,133)
Loan and lease loss provision (income)									(651)	663
Balance at end of period	320				971				320	971	5,441
Loans receivable:
Balance at end of period	7,748				9,863				7,748	9,863
PCI Loans [Member] | Real estate loans [Member]
Allowance for loan losses:
Balance at beginning of period				922				5,397	922	5,397
Charge-offs										(5,133)
Loan and lease loss provision (income)									(663)	658
Balance at end of period	259				922				259	922	5,397
Loans receivable:
Balance at end of period	7,659				9,677				7,659	9,677
PCI Loans [Member] | Commercial and industrial loans[Member]
Allowance for loan losses:
Balance at beginning of period				41				42	41	42
Charge-offs										0
Loan and lease loss provision (income)									0	(1)
Balance at end of period	41				41				41	41	42
Loans receivable:
Balance at end of period	49				136				49	136
PCI Loans [Member] | Leases Receivable [Member]
Allowance for loan losses:
Balance at beginning of period				0				0	0	0
Charge-offs										0
Loan and lease loss provision (income)									0	0
Balance at end of period	0				0				0	0	0
Loans receivable:
Balance at end of period	0				0				0	0
PCI Loans [Member] | Consumer loans [Member]
Allowance for loan losses:
Balance at beginning of period				8				2	8	2
Charge-offs										0
Loan and lease loss provision (income)									12	6
Balance at end of period	20				8				20	8	2
Loans receivable:
Balance at end of period	40				50				40	50
PCI Loans [Member] | Unallocated [Member]
Allowance for loan losses:
Balance at beginning of period				0				0	0	0
Charge-offs										0
Loan and lease loss provision (income)									0	0
Balance at end of period	0				0				0	0	0
Loans receivable:
Balance at end of period	0				0				0	0
Non-PCI Loans [Member]
Allowance for loan losses:
Balance at beginning of period				31,458				37,494	31,458	37,494
Charge-offs									(5,899)	(3,736)
Recoveries on loans and leases previously charged off									3,682	2,702
Loan and lease loss provision (income)									1,482	(5,002)
Balance at end of period	30,723				31,458				30,723	31,458	37,494
Ending balance: individually evaluated for impairment	5,878				4,327				5,878	4,327
Ending balance: collectively evaluated for impairment	24,845				27,131				24,845	27,131
Loans receivable:
Ending balance: individually evaluated for impairment	27,184				26,350				27,184	26,350
Ending balance: collectively evaluated for impairment	4,269,526				3,808,556				4,269,526	3,808,556
Balance at end of period	4,296,710				3,834,906				4,296,710	3,834,906
Non-PCI Loans [Member] | Real estate loans [Member]
Allowance for loan losses:
Balance at beginning of period				25,212				29,800	25,212	29,800
Charge-offs									(2,150)	(3,022)
Recoveries on loans and leases previously charged off									1,527	667
Loan and lease loss provision (income)									(7,836)	(2,233)
Balance at end of period	16,753				25,212				16,753	25,212	29,800
Ending balance: individually evaluated for impairment	2,093				3,980				2,093	3,980
Ending balance: collectively evaluated for impairment	14,660				21,232				14,660	21,232
Loans receivable:
Ending balance: individually evaluated for impairment	18,663				21,757				18,663	21,757
Ending balance: collectively evaluated for impairment	3,564,592				3,246,941				3,564,592	3,246,941
Balance at end of period	3,583,255				3,268,698				3,583,255	3,268,698
Non-PCI Loans [Member] | Commercial and industrial loans[Member]
Allowance for loan losses:
Balance at beginning of period				5,582				7,081	5,582	7,081
Charge-offs									(2,516)	(706)
Recoveries on loans and leases previously charged off									1,901	1,978
Loan and lease loss provision (income)									2,392	(2,771)
Balance at end of period	7,359				5,582				7,359	5,582	7,081
Ending balance: individually evaluated for impairment	441				347				441	347
Ending balance: collectively evaluated for impairment	6,918				5,235				6,918	5,235
Loans receivable:
Ending balance: individually evaluated for impairment	3,040				4,174				3,040	4,174
Ending balance: collectively evaluated for impairment	396,112				295,910				396,112	295,910
Balance at end of period	399,152				300,084				399,152	300,084
Non-PCI Loans [Member] | Leases Receivable [Member]
Allowance for loan losses:
Balance at beginning of period				307				0	307	0
Charge-offs									(1,233)	(6)
Recoveries on loans and leases previously charged off									239	1
Loan and lease loss provision (income)									6,966	312
Balance at end of period	6,279				307				6,279	307	0
Ending balance: individually evaluated for impairment	3,334				0				3,334	0
Ending balance: collectively evaluated for impairment	2,945				307				2,945	307
Loans receivable:
Ending balance: individually evaluated for impairment	4,452				0				4,452	0
Ending balance: collectively evaluated for impairment	292,832				243,294				292,832	243,294
Balance at end of period	297,284				243,294				297,284	243,294
Non-PCI Loans [Member] | Consumer loans [Member]
Allowance for loan losses:
Balance at beginning of period				191				242	191	242
Charge-offs									0	(2)
Recoveries on loans and leases previously charged off									15	56
Loan and lease loss provision (income)									(104)	(105)
Balance at end of period	102				191				102	191	242
Ending balance: individually evaluated for impairment	10				0				10	0
Ending balance: collectively evaluated for impairment	92				191				92	191
Loans receivable:
Ending balance: individually evaluated for impairment	1,029				419				1,029	419
Ending balance: collectively evaluated for impairment	15,990				22,411				15,990	22,411
Balance at end of period	17,019				22,830				17,019	22,830
Non-PCI Loans [Member] | Unallocated [Member]
Allowance for loan losses:
Balance at beginning of period				$ 166				$ 371	166	371
Charge-offs									0	0
Recoveries on loans and leases previously charged off									0	0
Loan and lease loss provision (income)									64	(205)
Balance at end of period	230				166				230	166	$ 371
Ending balance: individually evaluated for impairment	0				0				0	0
Ending balance: collectively evaluated for impairment	230				166				230	166
Loans receivable:
Ending balance: individually evaluated for impairment	0				0				0	0
Ending balance: collectively evaluated for impairment	0				0				0	0
Balance at end of period	$ 0				$ 0				$ 0	$ 0

Loans and Leases - Credit Quali

Loans and Leases - Credit Quality of Loans and Leases Portfolio (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	$ 4,304,458	$ 3,844,769
Real estate loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	3,590,914	3,278,375
Real estate loans [Member] | Retail [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	915,273	859,953
Real estate loans [Member] | Hotel/motel [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	681,325	651,158
Real estate loans [Member] | Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	55,190	55,962
Real estate loans [Member] | Residential property [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	521,853	338,767
Commercial and industrial loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	399,201	300,220
Commercial and industrial loans [Member] | Commercial term [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	182,685	138,168
Commercial and industrial loans [Member] | Commercial lines of credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	181,894	136,231
Commercial and industrial loans [Member] | International loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	34,622	25,821
Leases Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	297,284	243,294
Consumer loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	17,059	22,880
Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	4,296,710	3,834,906
Non-PCI Loans [Member] | Pass/Pass-Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	4,254,450	3,788,374
Non-PCI Loans [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	17,141	16,267
Non-PCI Loans [Member] | Classified [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	25,119	30,265
Non-PCI Loans [Member] | Real estate loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	3,583,255	3,268,698
Non-PCI Loans [Member] | Real estate loans [Member] | Retail [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	913,628	857,629
Non-PCI Loans [Member] | Real estate loans [Member] | Hotel/motel [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	679,683	649,540
Non-PCI Loans [Member] | Real estate loans [Member] | Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	1,413,852	1,367,776
Non-PCI Loans [Member] | Real estate loans [Member] | Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	55,190	55,962
Non-PCI Loans [Member] | Real estate loans [Member] | Residential property [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	520,902	337,791
Non-PCI Loans [Member] | Real estate loans [Member] | Pass/Pass-Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	3,549,704	3,230,926
Non-PCI Loans [Member] | Real estate loans [Member] | Pass/Pass-Watch [Member] | Retail [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	909,462	851,147
Non-PCI Loans [Member] | Real estate loans [Member] | Pass/Pass-Watch [Member] | Hotel/motel [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	667,085	634,397
Non-PCI Loans [Member] | Real estate loans [Member] | Pass/Pass-Watch [Member] | Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	1,397,657	1,352,193
Non-PCI Loans [Member] | Real estate loans [Member] | Pass/Pass-Watch [Member] | Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	55,190	55,962
Non-PCI Loans [Member] | Real estate loans [Member] | Pass/Pass-Watch [Member] | Residential property [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	520,310	337,227
Non-PCI Loans [Member] | Real estate loans [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	16,452	11,328
Non-PCI Loans [Member] | Real estate loans [Member] | Special Mention [Member] | Retail [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	454	2,275
Non-PCI Loans [Member] | Real estate loans [Member] | Special Mention [Member] | Hotel/motel [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	4,880	5,497
Non-PCI Loans [Member] | Real estate loans [Member] | Special Mention [Member] | Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	10,813	3,556
Non-PCI Loans [Member] | Real estate loans [Member] | Special Mention [Member] | Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	0	0
Non-PCI Loans [Member] | Real estate loans [Member] | Special Mention [Member] | Residential property [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	305	0
Non-PCI Loans [Member] | Real estate loans [Member] | Classified [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	17,099	26,444
Non-PCI Loans [Member] | Real estate loans [Member] | Classified [Member] | Retail [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	3,712	4,207
Non-PCI Loans [Member] | Real estate loans [Member] | Classified [Member] | Hotel/motel [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	7,718	9,646
Non-PCI Loans [Member] | Real estate loans [Member] | Classified [Member] | Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	5,382	12,027
Non-PCI Loans [Member] | Real estate loans [Member] | Classified [Member] | Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	0	0
Non-PCI Loans [Member] | Real estate loans [Member] | Classified [Member] | Residential property [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	287	564
Non-PCI Loans [Member] | Commercial and industrial loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	399,152	300,084
Non-PCI Loans [Member] | Commercial and industrial loans [Member] | Commercial term [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	182,636	138,032
Non-PCI Loans [Member] | Commercial and industrial loans [Member] | Commercial lines of credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	181,894	136,231
Non-PCI Loans [Member] | Commercial and industrial loans [Member] | International loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	34,622	25,821
Non-PCI Loans [Member] | Commercial and industrial loans [Member] | Pass/Pass-Watch [Member] | Commercial term [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	179,835	133,811
Non-PCI Loans [Member] | Commercial and industrial loans [Member] | Pass/Pass-Watch [Member] | Commercial lines of credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	181,462	135,699
Non-PCI Loans [Member] | Commercial and industrial loans [Member] | Pass/Pass-Watch [Member] | International loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	34,622	23,406
Non-PCI Loans [Member] | Commercial and industrial loans [Member] | Special Mention [Member] | Commercial term [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	439	2,060
Non-PCI Loans [Member] | Commercial and industrial loans [Member] | Special Mention [Member] | Commercial lines of credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	250	464
Non-PCI Loans [Member] | Commercial and industrial loans [Member] | Special Mention [Member] | International loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	0	2,415
Non-PCI Loans [Member] | Commercial and industrial loans [Member] | Classified [Member] | Commercial term [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	2,362	2,161
Non-PCI Loans [Member] | Commercial and industrial loans [Member] | Classified [Member] | Commercial lines of credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	182	68
Non-PCI Loans [Member] | Commercial and industrial loans [Member] | Classified [Member] | International loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	0	0
Non-PCI Loans [Member] | Leases Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	297,284	243,294
Non-PCI Loans [Member] | Leases Receivable [Member] | Pass/Pass-Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	292,832	242,393
Non-PCI Loans [Member] | Leases Receivable [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	0	0
Non-PCI Loans [Member] | Leases Receivable [Member] | Classified [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	4,452	901
Non-PCI Loans [Member] | Consumer loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	17,019	22,830
Non-PCI Loans [Member] | Consumer loans [Member] | Pass/Pass-Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	15,995	22,139
Non-PCI Loans [Member] | Consumer loans [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	0	0
Non-PCI Loans [Member] | Consumer loans [Member] | Classified [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and Leases	$ 1,024	$ 691

Loans and Leases - Analysis of

Loans and Leases - Analysis of Gross Loans and Leases, Disaggregated by Class (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans and Leases	$ 4,304,458	$ 3,844,769
Accruing 90 Days or More Past Due	0	0
Real estate loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans and Leases	3,590,914	3,278,375
Real estate loans [Member] | Hotel/motel [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans and Leases	681,325	651,158
Real estate loans [Member] | Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans and Leases	55,190	55,962
Real estate loans [Member] | Residential property [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans and Leases	521,853	338,767
Commercial and industrial loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans and Leases	399,201	300,220
Commercial and industrial loans [Member] | Commercial term [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans and Leases	182,685	138,168
Commercial and industrial loans [Member] | Commercial lines of credit [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans and Leases	181,894	136,231
Commercial and industrial loans [Member] | International loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans and Leases	34,622	25,821
Leases Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans and Leases	297,284	243,294
Consumer loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans and Leases	17,059	22,880
30-59 Days Past Due [Member] | Commercial and industrial loans [Member] | International loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	0
30-59 Days Past Due [Member] | Leases Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	2,295	2,090
Non-PCI Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	16,826	10,346
Current	4,279,884	3,824,560
Total loans and Leases	4,296,710	3,834,906
Accruing 90 Days or More Past Due	0	0
Non-PCI Loans [Member] | Real estate loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	7,780	5,941
Current	3,575,475	3,262,757
Total loans and Leases	3,583,255	3,268,698
Accruing 90 Days or More Past Due	0	0
Non-PCI Loans [Member] | Real estate loans [Member] | Retail [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	307	380
Current	913,321	857,249
Total loans and Leases	913,628	857,629
Accruing 90 Days or More Past Due	0	0
Non-PCI Loans [Member] | Real estate loans [Member] | Hotel/motel [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	3,819	1,683
Current	675,864	647,857
Total loans and Leases	679,683	649,540
Accruing 90 Days or More Past Due	0	0
Non-PCI Loans [Member] | Real estate loans [Member] | Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	3,045	2,636
Current	1,410,807	1,365,140
Total loans and Leases	1,413,852	1,367,776
Accruing 90 Days or More Past Due	0	0
Non-PCI Loans [Member] | Real estate loans [Member] | Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	0	0
Current	55,190	55,962
Total loans and Leases	55,190	55,962
Accruing 90 Days or More Past Due	0	0
Non-PCI Loans [Member] | Real estate loans [Member] | Residential property [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	609	1,242
Current	520,293	336,549
Total loans and Leases	520,902	337,791
Accruing 90 Days or More Past Due	0	0
Non-PCI Loans [Member] | Commercial and industrial loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans and Leases	399,152	300,084
Non-PCI Loans [Member] | Commercial and industrial loans [Member] | Commercial term [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	1,821	637
Current	180,815	137,395
Total loans and Leases	182,636	138,032
Accruing 90 Days or More Past Due	0	0
Non-PCI Loans [Member] | Commercial and industrial loans [Member] | Commercial lines of credit [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	432	0
Current	181,462	136,231
Total loans and Leases	181,894	136,231
Accruing 90 Days or More Past Due	0	0
Non-PCI Loans [Member] | Commercial and industrial loans [Member] | International loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	0	80
Current	34,622	25,741
Total loans and Leases	34,622	25,821
Accruing 90 Days or More Past Due	0	0
Non-PCI Loans [Member] | Leases Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	6,793	3,518
Current	290,491	239,776
Total loans and Leases	297,284	243,294
Non-PCI Loans [Member] | Consumer loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	0	170
Current	17,019	22,660
Total loans and Leases	17,019	22,830
Accruing 90 Days or More Past Due	0	0
Non-PCI Loans [Member] | 30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	8,341	5,277
Non-PCI Loans [Member] | 30-59 Days Past Due [Member] | Real estate loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	5,371	2,453
Non-PCI Loans [Member] | 30-59 Days Past Due [Member] | Real estate loans [Member] | Retail [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	96	9
Non-PCI Loans [Member] | 30-59 Days Past Due [Member] | Real estate loans [Member] | Hotel/motel [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	3,421	1,037
Non-PCI Loans [Member] | 30-59 Days Past Due [Member] | Real estate loans [Member] | Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	1,245	677
Non-PCI Loans [Member] | 30-59 Days Past Due [Member] | Real estate loans [Member] | Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	0	0
Non-PCI Loans [Member] | 30-59 Days Past Due [Member] | Real estate loans [Member] | Residential property [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	609	730
Non-PCI Loans [Member] | 30-59 Days Past Due [Member] | Commercial and industrial loans [Member] | Commercial term [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	425	484
Non-PCI Loans [Member] | 30-59 Days Past Due [Member] | Commercial and industrial loans [Member] | Commercial lines of credit [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	250	0
Non-PCI Loans [Member] | 30-59 Days Past Due [Member] | Commercial and industrial loans [Member] | International loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable		80
Non-PCI Loans [Member] | 30-59 Days Past Due [Member] | Consumer loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	0	170
Non-PCI Loans [Member] | 60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	2,859	2,079
Non-PCI Loans [Member] | 60-89 Days Past Due [Member] | Real estate loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	1,348	994
Non-PCI Loans [Member] | 60-89 Days Past Due [Member] | Real estate loans [Member] | Retail [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	15	137
Non-PCI Loans [Member] | 60-89 Days Past Due [Member] | Real estate loans [Member] | Hotel/motel [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	0	46
Non-PCI Loans [Member] | 60-89 Days Past Due [Member] | Real estate loans [Member] | Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	1,333	722
Non-PCI Loans [Member] | 60-89 Days Past Due [Member] | Real estate loans [Member] | Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	0	0
Non-PCI Loans [Member] | 60-89 Days Past Due [Member] | Real estate loans [Member] | Residential property [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	0	89
Non-PCI Loans [Member] | 60-89 Days Past Due [Member] | Commercial and industrial loans [Member] | Commercial term [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	567	42
Non-PCI Loans [Member] | 60-89 Days Past Due [Member] | Commercial and industrial loans [Member] | Commercial lines of credit [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	0	0
Non-PCI Loans [Member] | 60-89 Days Past Due [Member] | Commercial and industrial loans [Member] | International loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	0	0
Non-PCI Loans [Member] | 60-89 Days Past Due [Member] | Leases Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	944	1,043
Non-PCI Loans [Member] | 60-89 Days Past Due [Member] | Consumer loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	0	0
Non-PCI Loans [Member] | 90 Days or More Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	5,626	2,990
Non-PCI Loans [Member] | 90 Days or More Past Due [Member] | Real estate loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	1,061	2,494
Non-PCI Loans [Member] | 90 Days or More Past Due [Member] | Real estate loans [Member] | Retail [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	196	234
Non-PCI Loans [Member] | 90 Days or More Past Due [Member] | Real estate loans [Member] | Hotel/motel [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	398	600
Non-PCI Loans [Member] | 90 Days or More Past Due [Member] | Real estate loans [Member] | Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	467	1,237
Non-PCI Loans [Member] | 90 Days or More Past Due [Member] | Real estate loans [Member] | Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	0	0
Non-PCI Loans [Member] | 90 Days or More Past Due [Member] | Real estate loans [Member] | Residential property [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	0	423
Non-PCI Loans [Member] | 90 Days or More Past Due [Member] | Commercial and industrial loans [Member] | Commercial term [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	829	111
Non-PCI Loans [Member] | 90 Days or More Past Due [Member] | Commercial and industrial loans [Member] | Commercial lines of credit [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	182	0
Non-PCI Loans [Member] | 90 Days or More Past Due [Member] | Commercial and industrial loans [Member] | International loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	0	0
Non-PCI Loans [Member] | 90 Days or More Past Due [Member] | Leases Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	3,554	385
Non-PCI Loans [Member] | 90 Days or More Past Due [Member] | Consumer loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	$ 0	$ 0

Loans and Leases - Information

Loans and Leases - Information on Impaired Loans, Disaggregated by Loan Class (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable, Impaired [Line Items]
Recorded Investment	$ 27,183	$ 26,350	$ 35,859
Unpaid Principal Balance	29,623	27,986	39,363
With No Related Allowance Recorded	14,225	15,019	23,985
With an Allowance Recorded	12,958	11,331	11,874
Related Allowance	5,878	4,327	4,445
Average Recorded Investment	29,590	27,518	41,841
Interest Income Recognized	1,789	2,383	2,683
Real estate loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	18,663	21,757	27,341
Unpaid Principal Balance	20,701	23,258	30,136
With No Related Allowance Recorded	11,783	13,303	19,535
With an Allowance Recorded	6,880	8,454	7,806
Related Allowance	2,093	3,980	3,858
Average Recorded Investment	19,930	21,721	30,679
Interest Income Recognized	1,501	2,033	2,200
Real estate loans [Member] | Retail [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	1,403	1,678	2,597
Unpaid Principal Balance	1,423	1,684	2,892
With No Related Allowance Recorded	1,246	151	2,435
With an Allowance Recorded	157	1,527	162
Related Allowance	1	120	27
Average Recorded Investment	1,528	2,243	3,878
Interest Income Recognized	106	141	277
Real estate loans [Member] | Hotel/motel [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	6,184	6,227	7,168
Unpaid Principal Balance	7,220	6,823	7,538
With No Related Allowance Recorded	2,144	2,243	2,873
With an Allowance Recorded	4,040	3,984	4,295
Related Allowance	1,677	3,078	3,068
Average Recorded Investment	6,080	4,887	6,628
Interest Income Recognized	431	454	572
Real estate loans [Member] | Other [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	8,513	11,054	14,681
Unpaid Principal Balance	9,330	11,900	16,625
With No Related Allowance Recorded	7,569	8,111	11,619
With an Allowance Recorded	944	2,943	3,062
Related Allowance	394	782	759
Average Recorded Investment	9,551	11,935	17,334
Interest Income Recognized	842	1,326	1,231
Real estate loans [Member] | Residential property [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	2,563	2,798	2,895
Unpaid Principal Balance	2,728	2,851	3,081
With No Related Allowance Recorded	824	2,798	2,608
With an Allowance Recorded	1,739	0	287
Related Allowance	21	0	4
Average Recorded Investment	2,771	2,656	2,839
Interest Income Recognized	122	112	120
Commercial and industrial loans [Member] | Commercial term [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	2,857	4,106	5,257
Unpaid Principal Balance	2,899	4,171	5,621
With No Related Allowance Recorded	886	1,229	1,858
With an Allowance Recorded	1,971	2,877	3,399
Related Allowance	441	347	457
Average Recorded Investment	3,529	4,815	6,637
Interest Income Recognized	192	307	368
Commercial and industrial loans [Member] | Commercial lines of credit [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	182	68	381
Unpaid Principal Balance	182	68	493
With No Related Allowance Recorded	182	68	280
With an Allowance Recorded	0	0	101
Related Allowance	0	0	100
Average Recorded Investment	685	45	1,515
Interest Income Recognized	16	14	42
Commercial and industrial loans [Member] | International loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	0	0	1,215
Unpaid Principal Balance	0	0	1,215
With No Related Allowance Recorded	0	0	647
With an Allowance Recorded	0	0	568
Related Allowance	0	0	30
Average Recorded Investment	0	315	1,257
Interest Income Recognized	0	0	0
Leases Receivable [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	4,452
Unpaid Principal Balance	4,626
With No Related Allowance Recorded	455
With an Allowance Recorded	3,997
Related Allowance	3,334
Average Recorded Investment	4,464
Interest Income Recognized	47
Consumer loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	1,029	419	1,665
Unpaid Principal Balance	1,215	489	1,898
With No Related Allowance Recorded	919	419	1,665
With an Allowance Recorded	110	0	0
Related Allowance	10	0	0
Average Recorded Investment	982	622	1,753
Interest Income Recognized	$ 33	$ 29	$ 73

Loans and Leases - Summary of I

Loans and Leases - Summary of Interest Foregone on Impaired Loans (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Receivables [Abstract]
Interest income that would have been recognized had impaired loans performed in accordance with their original terms	$ 2,575	$ 3,053	$ 4,168
Less: Interest income recognized on impaired loans	(1,790)	(2,383)	(2,683)
Interest foregone on impaired loans	$ 785	$ 670	$ 1,485

Loans and Leases - Non-Accrual

Loans and Leases - Non-Accrual Loans and Leases, Disaggregated by Loan Class (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual Non-PCI loans	$ 15,805	$ 11,406
Real estate loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual Non-PCI loans	8,540	9,292
Real estate loans [Member] | Retail [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual Non-PCI loans	224	404
Real estate loans [Member] | Hotel/motel [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual Non-PCI loans	5,263	5,266
Real estate loans [Member] | Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual Non-PCI loans	2,462	3,058
Real estate loans [Member] | Residential property [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual Non-PCI loans	591	564
Commercial and industrial loans [Member] | Commercial term [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual Non-PCI loans	1,710	824
Commercial and industrial loans [Member] | Commercial lines of credit [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual Non-PCI loans	182	0
Leases Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual Non-PCI loans	4,452	901
Consumer loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual Non-PCI loans	$ 921	$ 389

Loans and Leases - Non-Performi

Loans and Leases - Non-Performing Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Receivables [Abstract]
Nonaccrual Non-PCI loans	$ 15,805	$ 11,406
Loans 90 days or more past due and still accruing	0	0
Total nonperforming Non-PCI loans	15,805	11,406
Other real estate owned	1,946	7,484
Total nonperforming assets	$ 17,751	$ 18,890

Loans and Leases - Troubled Deb

Loans and Leases - Troubled Debt Restructurings, Disaggregated by Type of Concession and by Loan Type (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable, Modifications [Line Items]
Non-Accrual TDRs, Deferral of Principal	$ 2,877	$ 1,828	$ 3,131
Non-Accrual TDRs, Deferral of Principal and Interest	3,884	4,444	1,329
Non-Accrual TDRs, Reduction of Principal and Interest	1,237	212	1,329
Non-Accrual TDRs, Extension of Maturity	102	419	1,089
Non-Accrual TDRs, Total	8,100	6,903	6,878
Accrual TDRs, Deferral of Principal	3,415	4,817	4,241
Accrual TDRs, Deferral of Principal and Interest	182	198	214
Accrual TDRs, Reduction of Principal and Interest	1,998	3,768	3,222
Accrual TDRs, Extension of Maturity	1,664	2,363	2,622
Accrual TDRs	7,259	11,146	10,299
Real estate loans [Member]
Financing Receivable, Modifications [Line Items]
Non-Accrual TDRs, Deferral of Principal	1,935	1,679	2,864
Non-Accrual TDRs, Deferral of Principal and Interest	3,761	4,373	1,329
Non-Accrual TDRs, Reduction of Principal and Interest	64	143	216
Non-Accrual TDRs, Extension of Maturity	0	0	352
Non-Accrual TDRs, Total	5,760	6,195	4,761
Accrual TDRs, Deferral of Principal	3,409	4,795	3,951
Accrual TDRs, Deferral of Principal and Interest	0	0	0
Accrual TDRs, Reduction of Principal and Interest	1,387	1,514	1,549
Accrual TDRs, Extension of Maturity	1,237	1,633	1,677
Accrual TDRs	6,033	7,942	7,177
Real estate loans [Member] | Retail [Member]
Financing Receivable, Modifications [Line Items]
Non-Accrual TDRs, Deferral of Principal	0	0	0
Non-Accrual TDRs, Deferral of Principal and Interest	0	0	0
Non-Accrual TDRs, Reduction of Principal and Interest	0	0	0
Non-Accrual TDRs, Extension of Maturity	0	0	344
Non-Accrual TDRs, Total	0	0	344
Accrual TDRs, Deferral of Principal	0	0	0
Accrual TDRs, Deferral of Principal and Interest	0	0	0
Accrual TDRs, Reduction of Principal and Interest	1,188	1,228	1,227
Accrual TDRs, Extension of Maturity	0		0
Accrual TDRs	1,188	1,228	1,227
Real estate loans [Member] | Hotel/motel [Member]
Financing Receivable, Modifications [Line Items]
Non-Accrual TDRs, Deferral of Principal	1,156	1,292	1,216
Non-Accrual TDRs, Deferral of Principal and Interest	3,495	3,722	28
Non-Accrual TDRs, Reduction of Principal and Interest	0	0	0
Non-Accrual TDRs, Extension of Maturity	0	0	0
Non-Accrual TDRs, Total	4,651	5,014	1,244
Accrual TDRs, Deferral of Principal	0	0	414
Accrual TDRs, Deferral of Principal and Interest	0	0	0
Accrual TDRs, Reduction of Principal and Interest	169	0	0
Accrual TDRs, Extension of Maturity	0		0
Accrual TDRs	169	0	414
Real estate loans [Member] | Other [Member]
Financing Receivable, Modifications [Line Items]
Non-Accrual TDRs, Deferral of Principal	779	387	959
Non-Accrual TDRs, Deferral of Principal and Interest	266	651	1,301
Non-Accrual TDRs, Reduction of Principal and Interest	64	143	216
Non-Accrual TDRs, Extension of Maturity	0	0	8
Non-Accrual TDRs, Total	1,109	1,181	2,484
Accrual TDRs, Deferral of Principal	2,777	4,012	3,537
Accrual TDRs, Deferral of Principal and Interest	0		0
Accrual TDRs, Reduction of Principal and Interest	30	286	322
Accrual TDRs, Extension of Maturity	959	1,344	1,378
Accrual TDRs	3,766	5,642	5,237
Real estate loans [Member] | Residential property [Member]
Financing Receivable, Modifications [Line Items]
Non-Accrual TDRs, Deferral of Principal	0	0	689
Non-Accrual TDRs, Deferral of Principal and Interest	0		0
Non-Accrual TDRs, Reduction of Principal and Interest	0		0
Non-Accrual TDRs, Extension of Maturity	0		0
Non-Accrual TDRs, Total	0	0	689
Accrual TDRs, Deferral of Principal	632	783	0
Accrual TDRs, Deferral of Principal and Interest	0		0
Accrual TDRs, Reduction of Principal and Interest	0	0	0
Accrual TDRs, Extension of Maturity	278	289	299
Accrual TDRs	910	1,072	299
Commercial and industrial loans [Member] | Commercial term [Member]
Financing Receivable, Modifications [Line Items]
Non-Accrual TDRs, Deferral of Principal	131	149	45
Non-Accrual TDRs, Deferral of Principal and Interest	123	71	0
Non-Accrual TDRs, Reduction of Principal and Interest	1,173	69	997
Non-Accrual TDRs, Extension of Maturity	102	419	679
Non-Accrual TDRs, Total	1,529	708	1,721
Accrual TDRs, Deferral of Principal	6	22	40
Accrual TDRs, Deferral of Principal and Interest	182	198	214
Accrual TDRs, Reduction of Principal and Interest	503	2,135	1,673
Accrual TDRs, Extension of Maturity	427	662	945
Accrual TDRs	1,118	3,017	2,872
Commercial and industrial loans [Member] | Commercial lines of credit [Member]
Financing Receivable, Modifications [Line Items]
Non-Accrual TDRs, Deferral of Principal		0	222
Non-Accrual TDRs, Deferral of Principal and Interest			0
Non-Accrual TDRs, Reduction of Principal and Interest		0	0
Non-Accrual TDRs, Extension of Maturity		0	58
Non-Accrual TDRs, Total		0	280
Accrual TDRs, Deferral of Principal		0	0
Accrual TDRs, Deferral of Principal and Interest			0
Accrual TDRs, Reduction of Principal and Interest			0
Accrual TDRs, Extension of Maturity		68	0
Accrual TDRs		68	0
Consumer loans [Member]
Financing Receivable, Modifications [Line Items]
Non-Accrual TDRs, Deferral of Principal	811		0
Non-Accrual TDRs, Deferral of Principal and Interest	0		0
Non-Accrual TDRs, Reduction of Principal and Interest	0	0	116
Non-Accrual TDRs, Extension of Maturity	0		0
Non-Accrual TDRs, Total	811	0	116
Accrual TDRs, Deferral of Principal	0	0	250
Accrual TDRs, Deferral of Principal and Interest	0		0
Accrual TDRs, Reduction of Principal and Interest	108	119	0
Accrual TDRs, Extension of Maturity	0		0
Accrual TDRs	$ 108	$ 119	$ 250

Loans and Leases - Troubled D72

Loans and Leases - Troubled Debt Restructurings, Disaggregated by Loan Class (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2017USD ($)SecurityLoan	Dec. 31, 2016USD ($)SecurityLoan	Dec. 31, 2015USD ($)SecurityLoan
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	4	7	14
Pre-Modification Outstanding Recorded Investment	$ 1,125	$ 4,188	$ 3,178
Post-Modification Outstanding Recorded Investment	$ 1,118	$ 4,076	$ 3,002
Real estate loans [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	2	2	3
Pre-Modification Outstanding Recorded Investment	$ 182	$ 3,785	$ 1,955
Post-Modification Outstanding Recorded Investment	$ 184	$ 3,745	$ 1,951
Real estate loans [Member] | Retail [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	0	1	1
Pre-Modification Outstanding Recorded Investment	$ 0	$ 21	$ 1,230
Post-Modification Outstanding Recorded Investment	$ 0	23	1,227
Loan modifications made through reduction of principal or accrued interest payments		$ 23
Loan modification made through deferrals principal payment			$ 1,200
Real estate loans [Member] | Hotel/motel [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	1	1	0
Pre-Modification Outstanding Recorded Investment	$ 167	$ 3,764	$ 0
Post-Modification Outstanding Recorded Investment	169	3,722	$ 0
Loan modifications made through reduction of principal or accrued interest payments	$ 169
Loan modification made through deferrals principal payment		$ 3,700
Real estate loans [Member] | Other [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	1	0	2
Pre-Modification Outstanding Recorded Investment	$ 15	$ 0	$ 725
Post-Modification Outstanding Recorded Investment	15	$ 0	724
Loan modification made through deferrals principal payment	$ 15		$ 724
Commercial and industrial loans [Member] | Commercial term [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	1	5	10
Pre-Modification Outstanding Recorded Investment	$ 123	$ 403	$ 973
Post-Modification Outstanding Recorded Investment	123	331	801
Loan modifications made through reduction of principal or accrued interest payments		65	60
Loan modification made through deferrals principal payment	$ 123	216	34
Amount of loan modification through extension of maturity		$ 50	$ 707
Consumer loans [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	1	0	1
Pre-Modification Outstanding Recorded Investment	$ 820	$ 0	$ 250
Post-Modification Outstanding Recorded Investment	811	$ 0	250
Loan modification made through deferrals principal payment	$ 811		$ 250

Loans and Leases - Troubled D73

Loans and Leases - Troubled Debt Restructurings that Defaulted Subsequent to Modifications Occurring Within Previous Twelve Months, Disaggregated by Loan Class (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)SecurityLoan	Dec. 31, 2015USD ($)SecurityLoan
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	1	2
Recorded Investment | $	$ 50	$ 590
Real estate loans [Member] | Other [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	0	1
Recorded Investment | $	$ 0	$ 412
Commercial and industrial loans [Member] | Commercial term [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	1	1
Recorded Investment | $	$ 50	$ 178

Loans and Leases - Schedule of

Loans and Leases - Schedule of Changes in Carrying Value of PCI Loans (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Carrying Amount
Balance at beginning of period	$ 3,812,340
Balance at end of period	4,273,415	$ 3,812,340
PCI Loans [Member]
Carrying Amount
Balance at beginning of period	8,892	14,573	$ 43,475
Accretion	602	1,144	2,956
Payments received	(2,827)	(7,138)	(31,215)
Disposal/transfers to OREO	(110)	(977)	(3,772)
Change in expected cash flows, net	0	0	0
Provision for credit losses	651	(664)	(4,415)
Balance at end of period	7,428	8,892	14,573
Accretable Yield
Balance at beginning of period	(5,677)	(5,944)	(11,025)
Accretion	602	1,144	2,956
Payments received	0	0	0
Disposal/transfers to OREO	0	0	0
Change in expected cash flows, net	(410)	(877)	2,125
Provision for credit losses	0	0	0
Balance at end of period	$ (5,485)	$ (5,677)	$ (5,944)

Loans and Leases - Credit Qua75

Loans and Leases - Credit Quality of PCI Loan (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment [Line Items]
Total	$ 4,304,458	$ 3,844,769
Allowance Amount	31,043	32,429
Loans and leases receivable, net	4,273,415	3,812,340
Real estate loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	3,590,914	3,278,375
Real estate loans [Member] | Retail [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	915,273	859,953
Real estate loans [Member] | Hotel/motel [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	681,325	651,158
Real estate loans [Member] | Residential property [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	521,853	338,767
Commercial and industrial loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	399,201	300,220
Commercial and industrial loans [Member] | Commercial term [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	182,685	138,168
Consumer loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	17,059	22,880
PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	7,748	9,863
Allowance Amount	320	971	$ 5,441
Loans and leases receivable, net	7,428	8,892	$ 14,573	$ 43,475
PCI Loans [Member] | Pass/Pass-Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	1,341	1,153
PCI Loans [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	328	1,180
PCI Loans [Member] | Classified [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	6,079	7,530
PCI Loans [Member] | Real estate loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	7,659	9,677
Allowance Amount	259	922
Loans and leases receivable, net	7,400	8,755
PCI Loans [Member] | Real estate loans [Member] | Retail [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	1,645	2,324
Allowance Amount	31	122
Loans and leases receivable, net	1,614	2,202
PCI Loans [Member] | Real estate loans [Member] | Hotel/motel [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	1,642	1,618
Allowance Amount	129	138
Loans and leases receivable, net	1,513	1,480
PCI Loans [Member] | Real estate loans [Member] | Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	3,421	4,759
Allowance Amount	16	590
Loans and leases receivable, net	3,405	4,169
PCI Loans [Member] | Real estate loans [Member] | Residential property [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	951	976
Allowance Amount	83	72
Loans and leases receivable, net	868	904
PCI Loans [Member] | Real estate loans [Member] | Pass/Pass-Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	1,341	1,153
PCI Loans [Member] | Real estate loans [Member] | Pass/Pass-Watch [Member] | Retail [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	220	0
PCI Loans [Member] | Real estate loans [Member] | Pass/Pass-Watch [Member] | Hotel/motel [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	169	177
PCI Loans [Member] | Real estate loans [Member] | Pass/Pass-Watch [Member] | Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	1	0
PCI Loans [Member] | Real estate loans [Member] | Pass/Pass-Watch [Member] | Residential property [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	951	976
PCI Loans [Member] | Real estate loans [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	328	1,180
PCI Loans [Member] | Real estate loans [Member] | Special Mention [Member] | Retail [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	0	0
PCI Loans [Member] | Real estate loans [Member] | Special Mention [Member] | Hotel/motel [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	96	0
PCI Loans [Member] | Real estate loans [Member] | Special Mention [Member] | Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	232	1,180
PCI Loans [Member] | Real estate loans [Member] | Special Mention [Member] | Residential property [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	0	0
PCI Loans [Member] | Real estate loans [Member] | Classified [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	5,990	7,344
PCI Loans [Member] | Real estate loans [Member] | Classified [Member] | Retail [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	1,425	2,324
PCI Loans [Member] | Real estate loans [Member] | Classified [Member] | Hotel/motel [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	1,377	1,441
PCI Loans [Member] | Real estate loans [Member] | Classified [Member] | Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	3,188	3,579
PCI Loans [Member] | Real estate loans [Member] | Classified [Member] | Residential property [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	0	0
PCI Loans [Member] | Commercial and industrial loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	49	136
PCI Loans [Member] | Commercial and industrial loans [Member] | Commercial term [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	49	136
Allowance Amount	41	41
Loans and leases receivable, net	8	95
PCI Loans [Member] | Commercial and industrial loans [Member] | Pass/Pass-Watch [Member] | Commercial term [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	0	0
PCI Loans [Member] | Commercial and industrial loans [Member] | Special Mention [Member] | Commercial term [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	0	0
PCI Loans [Member] | Commercial and industrial loans [Member] | Classified [Member] | Commercial term [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	49	136
PCI Loans [Member] | Consumer loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	40	50
Allowance Amount	20	8
Loans and leases receivable, net	20	42
PCI Loans [Member] | Consumer loans [Member] | Pass/Pass-Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	0	0
PCI Loans [Member] | Consumer loans [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	0	0
PCI Loans [Member] | Consumer loans [Member] | Classified [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	$ 40	$ 50

Loans and Leases - Summary of P

Loans and Leases - Summary of PCI Loans (Details) $ in Thousands	Dec. 31, 2017USD ($)loan_poolSecurityLoan	Dec. 31, 2016USD ($)loan_poolSecurityLoan	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)
Financing Receivable, Recorded Investment [Line Items]
Total loans and leases	$ 4,304,458	$ 3,844,769
Allowance for loan and lease losses	(31,043)	(32,429)
Loans and leases receivable, net	4,273,415	3,812,340
Real estate loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and leases	3,590,914	3,278,375
Real estate loans [Member] | Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and leases	55,190	55,962
Real estate loans [Member] | Residential property [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and leases	521,853	338,767
Commercial and industrial loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and leases	399,201	300,220
Consumer loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and leases	17,059	22,880
PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and leases	7,748	9,863
Allowance for loan and lease losses	(320)	(971)	$ (5,441)
Loans and leases receivable, net	7,428	8,892	$ 14,573	$ 43,475
PCI Loans [Member] | Real estate loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and leases	7,659	9,677
Allowance for loan and lease losses	(259)	(922)
Loans and leases receivable, net	7,400	8,755
PCI Loans [Member] | Real estate loans [Member] | Commercial real estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and leases	6,708	8,701
PCI Loans [Member] | Real estate loans [Member] | Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and leases	0	0
PCI Loans [Member] | Real estate loans [Member] | Residential property [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and leases	951	976
Allowance for loan and lease losses	(83)	(72)
Loans and leases receivable, net	868	904
PCI Loans [Member] | Commercial and industrial loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and leases	49	136
PCI Loans [Member] | Consumer loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans and leases	40	50
Allowance for loan and lease losses	(20)	(8)
Loans and leases receivable, net	$ 20	$ 42
PCI Loans [Member] | Pooled Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of loans | SecurityLoan	44,000	52,000
Number of pools | loan_pool	11,000	10,000
Total loans and leases	$ 6,760	$ 7,966
Percentage of total	87.20%	81.00%
Allowance for loan and lease losses	$ (218)	$ (617)
Loans and leases receivable, net	$ 6,542	$ 7,349
PCI Loans [Member] | Pooled Loans [Member] | Real estate loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of loans | SecurityLoan	40,000	45,000
Number of pools | loan_pool	7,000	6,000
Total loans and leases	$ 6,708	$ 7,780
Percentage of total	87.60%	80.00%
PCI Loans [Member] | Pooled Loans [Member] | Real estate loans [Member] | Commercial real estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of loans | SecurityLoan	40,000	45,000
Number of pools | loan_pool	7,000	6,000
Total loans and leases	$ 6,708	$ 7,780
Percentage of total	100.00%	89.00%
PCI Loans [Member] | Pooled Loans [Member] | Real estate loans [Member] | Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of loans | SecurityLoan	0	0
Number of pools | loan_pool	0	0
Total loans and leases	$ 0	$ 0
Percentage of total	0.00%	0.00%
PCI Loans [Member] | Pooled Loans [Member] | Real estate loans [Member] | Residential property [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of loans | SecurityLoan	0	0
Number of pools | loan_pool	0	0
Total loans and leases	$ 0	$ 0
Percentage of total	0.00%	0.00%
PCI Loans [Member] | Pooled Loans [Member] | Commercial and industrial loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of loans | SecurityLoan	3,000	6,000
Number of pools | loan_pool	3,000	3,000
Total loans and leases	$ 49	$ 136
Percentage of total	100.00%	100.00%
PCI Loans [Member] | Pooled Loans [Member] | Consumer loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of loans | SecurityLoan	1,000	1,000
Number of pools | loan_pool	1,000	1,000
Total loans and leases	$ 3	$ 50
Percentage of total	7.50%	100.00%
PCI Loans [Member] | Non-Pooled Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of loans | SecurityLoan	2,000	3,000
Total loans and leases	$ 988	$ 1,897
Percentage of total	12.80%	19.00%
Allowance for loan and lease losses	$ (102)	$ (354)
Loans and leases receivable, net	$ 886	$ 1,543
PCI Loans [Member] | Non-Pooled Loans [Member] | Real estate loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of loans | SecurityLoan	1,000	3,000
Total loans and leases	$ 951	$ 1,897
Percentage of total	12.40%	20.00%
PCI Loans [Member] | Non-Pooled Loans [Member] | Real estate loans [Member] | Commercial real estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of loans | SecurityLoan	0	1,000
Total loans and leases	$ 0	$ 921
Percentage of total	0.00%	11.00%
PCI Loans [Member] | Non-Pooled Loans [Member] | Real estate loans [Member] | Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of loans | SecurityLoan	0	0
Total loans and leases	$ 0	$ 0
Percentage of total	0.00%	0.00%
PCI Loans [Member] | Non-Pooled Loans [Member] | Real estate loans [Member] | Residential property [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of loans | SecurityLoan	1,000	2,000
Total loans and leases	$ 951	$ 976
Percentage of total	100.00%	100.00%
PCI Loans [Member] | Non-Pooled Loans [Member] | Commercial and industrial loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of loans | SecurityLoan	0	0
Total loans and leases	$ 0	$ 0
Percentage of total	0.00%	0.00%
PCI Loans [Member] | Non-Pooled Loans [Member] | Consumer loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of loans | SecurityLoan	1,000	0
Total loans and leases	$ 37	$ 0
Percentage of total	92.50%	0.00%

Loans and Leases - Analysis o77

Loans and Leases - Analysis of Gross Loans, Disaggregated by PCI Loan Class (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans and Leases	$ 4,304,458	$ 3,844,769
Allowance Amount	31,043	32,429
Loans and leases receivable, net	4,273,415	3,812,340
Real estate loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans and Leases	3,590,914	3,278,375
Real estate loans [Member] | Hotel/motel [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans and Leases	681,325	651,158
Real estate loans [Member] | Residential property [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans and Leases	521,853	338,767
Commercial and industrial loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans and Leases	399,201	300,220
Commercial and industrial loans [Member] | Commercial term [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans and Leases	182,685	138,168
Consumer loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans and Leases	17,059	22,880
PCI Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	703	1,392
Current	7,045	8,471
Total loans and Leases	7,748	9,863
Allowance Amount	320	971	$ 5,441
Loans and leases receivable, net	7,428	8,892	$ 14,573	$ 43,475
PCI Loans [Member] | Real estate loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	698	1,336
Current	6,961	8,341
Total loans and Leases	7,659	9,677
Allowance Amount	259	922
Loans and leases receivable, net	7,400	8,755
PCI Loans [Member] | Real estate loans [Member] | Retail [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	434	1,035
Current	1,211	1,289
Total loans and Leases	1,645	2,324
Allowance Amount	31	122
Loans and leases receivable, net	1,614	2,202
PCI Loans [Member] | Real estate loans [Member] | Hotel/motel [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	168	178
Current	1,474	1,440
Total loans and Leases	1,642	1,618
Allowance Amount	129	138
Loans and leases receivable, net	1,513	1,480
PCI Loans [Member] | Real estate loans [Member] | Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	96	123
Current	3,325	4,636
Total loans and Leases	3,421	4,759
Allowance Amount	16	590
Loans and leases receivable, net	3,405	4,169
PCI Loans [Member] | Real estate loans [Member] | Residential property [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	0	0
Current	951	976
Total loans and Leases	951	976
Allowance Amount	83	72
Loans and leases receivable, net	868	904
PCI Loans [Member] | Commercial and industrial loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans and Leases	49	136
PCI Loans [Member] | Commercial and industrial loans [Member] | Commercial term [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	5	6
Current	44	130
Total loans and Leases	49	136
Allowance Amount	41	41
Loans and leases receivable, net	8	95
PCI Loans [Member] | Consumer loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	0	50
Current	40	0
Total loans and Leases	40	50
Allowance Amount	20	8
Loans and leases receivable, net	20	42
PCI Loans [Member] | 30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	5	975
PCI Loans [Member] | 30-59 Days Past Due [Member] | Real estate loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	0	975
PCI Loans [Member] | 30-59 Days Past Due [Member] | Real estate loans [Member] | Retail [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	0	797
PCI Loans [Member] | 30-59 Days Past Due [Member] | Real estate loans [Member] | Hotel/motel [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	0	178
PCI Loans [Member] | 30-59 Days Past Due [Member] | Real estate loans [Member] | Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	0	0
PCI Loans [Member] | 30-59 Days Past Due [Member] | Real estate loans [Member] | Residential property [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	0	0
PCI Loans [Member] | 30-59 Days Past Due [Member] | Commercial and industrial loans [Member] | Commercial term [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	5	0
PCI Loans [Member] | 30-59 Days Past Due [Member] | Consumer loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	0	0
PCI Loans [Member] | 60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	168	0
PCI Loans [Member] | 60-89 Days Past Due [Member] | Real estate loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	168	0
PCI Loans [Member] | 60-89 Days Past Due [Member] | Real estate loans [Member] | Retail [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	0	0
PCI Loans [Member] | 60-89 Days Past Due [Member] | Real estate loans [Member] | Hotel/motel [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	168	0
PCI Loans [Member] | 60-89 Days Past Due [Member] | Real estate loans [Member] | Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	0	0
PCI Loans [Member] | 60-89 Days Past Due [Member] | Real estate loans [Member] | Residential property [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	0	0
PCI Loans [Member] | 60-89 Days Past Due [Member] | Commercial and industrial loans [Member] | Commercial term [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	0	0
PCI Loans [Member] | 60-89 Days Past Due [Member] | Consumer loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	0	0
PCI Loans [Member] | 90 Days or More Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	530	417
PCI Loans [Member] | 90 Days or More Past Due [Member] | Real estate loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	530	361
PCI Loans [Member] | 90 Days or More Past Due [Member] | Real estate loans [Member] | Retail [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	434	238
PCI Loans [Member] | 90 Days or More Past Due [Member] | Real estate loans [Member] | Hotel/motel [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	0	0
PCI Loans [Member] | 90 Days or More Past Due [Member] | Real estate loans [Member] | Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	96	123
PCI Loans [Member] | 90 Days or More Past Due [Member] | Real estate loans [Member] | Residential property [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	0	0
PCI Loans [Member] | 90 Days or More Past Due [Member] | Commercial and industrial loans [Member] | Commercial term [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	0	6
PCI Loans [Member] | 90 Days or More Past Due [Member] | Consumer loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	$ 0	$ 50

Loans and Leases - Changes in S

Loans and Leases - Changes in Servicing Assets and Liabilities (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Servicing assets:
Balance at beginning of period	$ 10,564
Amortization	(3,266)	$ (3,364)
Balance at end of period	10,218	10,564
Servicing liabilities:
Amortization	$ (859)	$ (1,641)

Servicing Assets and Liabilit79

Servicing Assets and Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Servicing Asset at Amortized Cost, Balance [Roll Forward]
Balance at beginning of period	$ 10,564	$ 11,744
Addition related to sale of SBA loans	2,590	2,184
Amortization	(3,266)	(3,364)
Reversal of allowance	330	0
Balance at end of period	10,218	10,564	$ 11,744
Balance at beginning of period	3,143	4,784
Amortization	(859)	(1,641)
Reversal of allowance	(67)	0
Balance at end of period	2,217	3,143	4,784
Serviced loans sold to unaffiliated parties	476,500	484,700
Servicing fee income	4,700	4,700	4,600
Net amortization expense	$ 2,400	$ 1,700	$ 3,100

Premises and Equipment - Summar

Premises and Equipment - Summary of Major Components of Premises and Equipment (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 59,452	$ 60,444
Accumulated depreciation and amortization	(32,797)	(31,383)
Impairment reserve	0	(363)
Total premises and equipment, net	26,655	28,698
Depreciation and amortization expense	2,900	2,900	$ 3,100
Software [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	879	880
Land [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	8,470	8,750
Buildings and improvements [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	17,261	18,313
Furniture and equipment [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	21,271	20,668
Leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 11,571	$ 11,833

Intangible Assets - Additional

Intangible Assets - Additional Information (Detail) - USD ($)	Oct. 27, 2016	Aug. 31, 2014	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Goodwill impairment			$ 0
Intangible asset impairment charges			0	$ 0
Core deposit intangible [Member]
Finite-Lived Intangible Assets [Line Items]
Total amortization expense for other intangible assets, including discontinued operations			$ 345,000	$ 326,000	$ 379,000
CBI Merger [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 11,000,000
CBI Merger [Member] | Core deposit intangible [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired		$ 2,200,000
CBI Merger [Member] | Third Party Originators Intangible [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 483,000

Intangible Assets - Summary of

Intangible Assets - Summary of Other Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Acquired Finite-Lived Intangible Assets [Line Items]
Accumulated amortization	$ (1,183)	$ (838)
Goodwill	11,031	11,031
Gross carrying amount	13,727	13,727
Net carrying amount	$ 12,544	12,889
Core deposit intangible [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible asset amortization period	10 years
Gross carrying amount, excluding goodwill	$ 2,213	2,213
Accumulated amortization	(1,119)	(838)
Net carrying amount, excluding goodwill	$ 1,094	1,375
Third Party Originators Intangible [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible asset amortization period	7 years
Gross carrying amount, excluding goodwill	$ 483	483
Accumulated amortization	(64)	0
Net carrying amount, excluding goodwill	$ 419	$ 483

Intangible Assets - Estimated F

Intangible Assets - Estimated Future Amortization Expense Related to Other Intangible Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Total	$ 12,544	$ 12,889
Core deposit intangible [Member]
Finite-Lived Intangible Assets [Line Items]
2,018	362
2,019	309
2,020	261
2,021	216
2,022	171
Thereafter	$ 194

Deposits - Scheduled Maturities

Deposits - Scheduled Maturities of Time Deposits (Detail) $ in Thousands	Dec. 31, 2017USD ($)
Restricted Cash and Cash Equivalents Items [Line Items]
2,018	$ 1,236,380
2,019	140,527
2,020	23,195
2,021	14,585
2,022	1,645
Total	1,416,332
Time Deposits of $250,000 or More [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
2,018	364,225
2,019	94,735
2,020	1,619
2,021	1,650
2,022	0
Total	462,229
Other Time Deposits [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
2,018	872,155
2,019	45,792
2,020	21,576
2,021	12,935
2,022	1,645
Total	$ 954,103

Deposits - Summary of Interest

Deposits - Summary of Interest Expense on Deposits (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Banking and Thrift [Abstract]
Demand – interest-bearing	$ 74	$ 75	$ 114
Money market and savings	12,515	6,470	4,195
Time deposits of $100,000 or more	10,471	6,605	6,639
Other time deposits	3,029	3,420	4,462
Total interest expense on deposits	$ 26,089	$ 16,570	$ 15,410

Deposits - Additional Informati

Deposits - Additional Information (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Banking and Thrift [Abstract]
Accrued interest payable on deposits	$ 5.3	$ 2.6
Total deposits reclassified to loans due to overdrafts	$ 1.5	$ 1.2

Borrowings - Borrowings (Detail

Borrowings - Borrowings (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Federal Home Loan Banks [Abstract]
FHLB advances	$ 150,000	$ 315,000
Total FHLB advances	$ 150,000	$ 315,000

Borrowings - Summary of Contrac

Borrowings - Summary of Contractual Maturities Pertaining to FHLB (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Federal Home Loan Banks [Abstract]
Year of Maturity, 2018, Amount	$ 150,000	$ 315,000
Total FHLB advances	$ 150,000	$ 315,000
Year of Maturity, 2018, Weighted-Average Interest Rate	1.41%
Year of Maturity, Total, Weighted-Average Interest Rate	1.41%

Borrowings - Summary of Financi

Borrowings - Summary of Financial Data Pertaining to Federal Home Loan Bank Advances (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Federal Home Loan Banks [Abstract]
Weighted-average interest rate at end of year	1.41%	0.55%	0.27%
Weighted-average interest rate during the year	0.90%	0.45%	0.20%
Average balance of FHLB advances	$ 119,041	$ 196,708	$ 38,110
Maximum amount outstanding at any month-end	$ 330,000	$ 320,000	$ 180,000

Borrowings - Additional Informa

Borrowings - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Federal Home Loan Banks [Abstract]
Pledged loans receivable, carrying value	$ 1,100,000,000
Total borrowing capacity available from the collateral	802,900,000
Available borrowing capacity	652,900,000
Available for use through the Fed Discount Window	8,500,000
Pledged loans, carrying values	9,000,000
Borrowings	0
Advances from the FHLB	150,000,000	$ 315,000,000
Increase in the advances from the FHLB	165,000,000
Interest on subordinated debentures	$ 1,077,000	$ 879,000	$ 76,000
Weighted-average interest rates	0.90%	0.45%	0.20%

Subordinated Debentures - Addit

Subordinated Debentures - Additional Information (Detail) - USD ($)	Mar. 21, 2017	Dec. 31, 2005	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Sep. 30, 2014	Aug. 31, 2014
Debt Instrument [Line Items]
Subordinated debentures			$ 117,270,000	$ 18,978,000
Subordinated Debentures [Member]
Debt Instrument [Line Items]
Subordinated debentures, unpaid principal amount	$ 100,000,000
Debt instrument fixed rate (percent)	5.45%
Debt issuance costs	$ 2,200,000
Long-term debt			98,000,000
Amortization of debt issuance costs			134,000
Central Bancorp, Inc [Member]
Debt Instrument [Line Items]
Debt instrument discount							$ 8,300,000
Amortization of subordinated debentures			$ 329,000	275,000	$ 176,000
Central Bancorp, Inc [Member] | Subordinated Debentures [Member]
Debt Instrument [Line Items]
Subordinated debentures, unpaid principal amount		$ 26,000,000				$ 26,800,000
Subordinated debentures						18,500,000
Debt instrument discount						$ 8,300,000
Variable interest rate basis		3 month LIBOR plus 140 basis
Maturity date of subordinated debentures		Dec. 31, 2035
Frequency of interest payment			quarterly
Interest deferral period (up to)			5 years
Amortization of subordinated debentures			$ 329,000	$ 275,000	$ 176,000
3-Month LIBOR [Member] | Subordinated Debentures [Member]
Debt Instrument [Line Items]
Basis spread (percent)	3.315%
3-Month LIBOR [Member] | Central Bancorp, Inc [Member] | Subordinated Debentures [Member]
Debt Instrument [Line Items]
Basis spread (percent)		1.40%

Income Taxes - Reconciliation o

Income Taxes - Reconciliation of Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized tax benefits at beginning of year	$ 1,039	$ 934	$ 1,765
Gross increases for tax positions of prior years	0	105	0
Lapse of statute of limitations	0	0	(831)
Unrecognized tax benefits at end of year	$ 1,039	$ 1,039	$ 934

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Unrecognized tax benefits that would affect our effective tax rate if recognized	$ 1,000	$ 1,000	$ 900
Decrease in unrecognized tax benefits due to lapse of statute of limitations	0	0	831
Increase in unrecognized tax benefits	105
Accrued interest on uncertain tax benefits	34	33	20
Accrued interest related to uncertain tax positions, net of federal tax benefit	132	101	67
Income tax deductions due to excess tax benefits	1,800	614
Increase in deferred tax assets, allowance for loan losses and net operating loss carryforwards	1,000
Valuation allowance	2,750	1,031	$ 0
Provisional decrease to deferred tax assets and liabilities	3,900
Net adjustment to deferred income tax expense	3,900
Federal [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	223,000
Low income housing tax credit	1,000
State [Member]
Operating Loss Carryforwards [Line Items]
Low income housing tax credit	200
Central Bancorp, Inc [Member]
Operating Loss Carryforwards [Line Items]
Increase in deferred tax assets	$ 13,900	$ 5,800

Income Taxes - Summary of Provi

Income Taxes - Summary of Provision (Benefit) for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Current expense:
Federal	$ 20,924	$ 19,802	$ 14,755
State	6,804	6,503	5,084
Total current expense	27,728	26,305	19,839
Deferred expense (benefit):
Federal	14,623	4,410	13,663
State	(1,727)	2,184	4,680
Total deferred expense	12,896	6,594	18,343
Provision for income taxes	$ 40,624	$ 32,899	$ 38,182

Income Taxes - Summary of Defer

Income Taxes - Summary of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Deferred tax assets:
Allowance for loan and lease losses	$ 9,282	$ 13,932	$ 18,205
Depreciation	192	0	0
Purchase accounting	4,685	7,492	13,156
Net operating loss carryforward	18,648	16,876	21,511
Unrealized loss on securities available for sale	919	1,695	859
Indemnified assets	701	1,441	152
Tax credit	1,241	3,516	3,939
State taxes	1,489	2,231	1,539
Other	3,724	5,726	5,040
Total deferred tax assets	40,881	52,909	64,401
Deferred tax liabilities:
Mark to market	(4,879)	(3,960)	(10,469)
Depreciation	0	(396)	(705)
Other	(797)	(1,190)	(1,132)
Total deferred tax liabilities	(5,676)	(5,546)	(12,306)
Valuation Allowance	(2,750)	(1,031)	0
Net deferred tax assets	$ 32,455	$ 46,332	$ 52,095

Income Taxes - Reconciliation b

Income Taxes - Reconciliation between Federal Statutory Income Tax Rate and Effective Tax Rate (Detail)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Federal statutory income tax rate	35.00%	35.00%	35.00%
State taxes, net of federal tax benefits	6.64%	7.04%	8.32%
Tax-exempt municipal securities	(0.24%)	(0.26%)	(0.26%)
Tax credit - federal	(2.37%)	(2.50%)	(2.51%)
Federal rate adjustment, net of federal benefit of state	4.18%	0.00%	0.00%
Other	(0.58%)	(2.48%)	0.95%
Effective tax rate	42.63%	36.80%	41.50%

Accumulated Other Comprehensi97

Accumulated Other Comprehensive Income (Loss) - Activity in Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period, before tax	$ (4,089)	$ (2,331)
Balance at end of period, before tax	(3,188)	(4,089)	$ (2,331)
Beginning balance	531,025	493,918	453,387
Other comprehensive loss before reclassification	2,273	(2,033)	5,833
Reclassification from accumulated other comprehensive loss	(1,748)	(46)	(6,611)
Other comprehensive income (loss)	525	(2,079)	(778)
Ending balance	562,477	531,025	493,918
Accumulated Net Unrealized Investment Gain (Loss) [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period, before tax	(4,089)	(2,331)	(985)
Other comprehensive loss before reclassification, before tax	2,649	(1,712)	5,265
Reclassification from accumulated other comprehensive loss, before tax	(1,748)	(46)	(6,611)
Period change, before tax	901	(1,758)	(1,346)
Balance at end of period, before tax		(4,089)	(2,331)
Accumulated Net Unrealized Investment Gain (Loss) [Member] | Interest-Only Strip [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period, before tax	0	9	16
Other comprehensive loss before reclassification, before tax	0	(9)	(7)
Reclassification from accumulated other comprehensive loss, before tax	0	0
Period change, before tax	0	(9)	(7)
Balance at end of period, before tax	0	0	9
Tax (Expense) Benefit [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period, tax	1,695	2,007	1,432
Other comprehensive loss before reclassification, tax	(376)	(312)	575
Reclassification from accumulated other comprehensive loss, tax	0	0	0
Period change, tax	(376)	(312)	575
Balance at end of period, tax	1,319	1,695	2,007
Accumulated Other Comprehensive Income (Loss) [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(2,394)	(315)	463
Other comprehensive income (loss)	525	(2,079)	(778)
Ending balance	$ (1,869)	$ (2,394)	$ (315)

Accumulated Other Comprehensi98

Accumulated Other Comprehensive Income (Loss) - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Accumulated Other Comprehensive Income [Line Items]
Net gain on sales of securities	$ 1,748	$ 46	$ 6,611
Net unrealized gains (losses) recognized in earnings resulting from the redemption of investment securities	(1,300)	314	(1,900)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Unrealized Investment Gain (Loss) [Member]
Accumulated Other Comprehensive Income [Line Items]
Net gain on sales of securities	$ 1,700	$ 46	$ 6,600

Regulatory Matters - Additional

Regulatory Matters - Additional Information (Detail)	Dec. 31, 2017	Dec. 31, 2016
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Minimum ratio of qualifying total capital to risk-weighted assets	8.00%
Minimum ratio of Tier 1 capital to risk-weighted assets	6.00%
Leverage ratio	4.00%
Minimum ratio of qualifying total capital to risk-weighted assets for well capitalized	10.00%
Minimum ratio of Tier 1 capital to average assets for well capitalized	8.00%
Bank's capital conservation buffer (percent)	6.55%	5.64%
Depository Institutions [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Leverage ratio	5.00%
Hanmi Bank [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Bank's capital conservation buffer (percent)	7.20%	5.86%

Regulatory Matters - Capital Ra

Regulatory Matters - Capital Ratios of Hanmi Financial and Bank (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Minimum Regulatory Requirement Ratio for Total capital to risk-weighted assets	8.00%
Minimum Regulatory Requirement Ratio for Tier 1 capital to risk-weighted assets	6.00%
Minimum Regulatory Requirement Ratio for Tier 1 capital to average assets	4.00%
Minimum to Be Categorized as Well Capitalized Percentage, Total capital to risk-weighted assets	10.00%
Minimum to Be Categorized as Well Capitalized Percentage, Tier 1 capital to risk-weighted assets	8.00%
Hanmi Financial [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Actual Capital, Total capital to risk-weighted assets	$ 684,272	$ 554,089
Actual Capital, Tier 1 capital to risk-weighted assets	553,970	520,477
Actual Capital, Common equity Tier 1 capital to risk-weighted assets	537,950	509,239
Actual Capital, Tier 1 capital to average assets	$ 553,970	$ 520,477
Actual Capital Percentage, Total capital to risk-weighted assets	15.50%	13.86%
Actual Capital Percentage, Tier 1 capital to risk-weighted assets	12.55%	13.02%
Actual Capital Percentage, Common equity Tier 1 capital to risk-weighted assets	12.19%	12.73%
Actual Capital Percentage, Tier 1 capital to average assets	10.79%	11.53%
Minimum Regulatory Requirement Capital, Total capital to risk-weighted assets	$ 353,171	$ 319,901
Minimum Regulatory Requirement Capital, Tier 1 capital to risk-weighted assets	264,878	239,926
Minimum Regulatory Requirement Capital, Common equity Tier 1 capital to risk-weighted assets	198,658	179,944
Minimum Regulatory Requirement Capital, Tier 1 capital to average assets	$ 205,344	$ 180,581
Minimum Regulatory Requirement Ratio for Total capital to risk-weighted assets	8.00%	8.00%
Minimum Regulatory Requirement Ratio for Tier 1 capital to risk-weighted assets	6.00%	6.00%
Minimum Regulatory Requirement Ratio for Common equity Tier 1 capital to risk-weighted assets	4.50%	4.50%
Minimum Regulatory Requirement Ratio for Tier 1 capital to average assets	4.00%	4.00%
Hanmi Bank [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Actual Capital, Total capital to risk-weighted assets	$ 670,896	$ 544,759
Actual Capital, Tier 1 capital to risk-weighted assets	638,557	511,146
Actual Capital, Common equity Tier 1 capital to risk-weighted assets	638,557	511,146
Actual Capital, Tier 1 capital to average assets	$ 638,557	$ 511,146
Actual Capital Percentage, Total capital to risk-weighted assets	15.20%	13.64%
Actual Capital Percentage, Tier 1 capital to risk-weighted assets	14.47%	12.80%
Actual Capital Percentage, Common equity Tier 1 capital to risk-weighted assets	14.47%	12.80%
Actual Capital Percentage, Tier 1 capital to average assets	12.44%	11.33%
Minimum Regulatory Requirement Capital, Total capital to risk-weighted assets	$ 353,091	$ 319,520
Minimum Regulatory Requirement Capital, Tier 1 capital to risk-weighted assets	264,818	239,640
Minimum Regulatory Requirement Capital, Common equity Tier 1 capital to risk-weighted assets	198,614	179,730
Minimum Regulatory Requirement Capital, Tier 1 capital to average assets	$ 205,385	$ 180,411
Minimum Regulatory Requirement Ratio for Total capital to risk-weighted assets	8.00%	8.00%
Minimum Regulatory Requirement Ratio for Tier 1 capital to risk-weighted assets	6.00%	6.00%
Minimum Regulatory Requirement Ratio for Common equity Tier 1 capital to risk-weighted assets	4.50%	4.50%
Minimum Regulatory Requirement Ratio for Tier 1 capital to average assets	4.00%	4.00%
Minimum to Be Categorized as Well Capitalized Capital, Total capital to risk-weighted assets	$ 441,364	$ 399,399
Minimum to Be Categorized as Well Capitalized Capital, Tier 1 capital to risk-weighted assets	353,091	319,520
Minimum to Be Categorized as Well Capitalized Capital,. Common equity Tier 1 capital to risk-weighted average	286,886	259,610
Minimum to Be Categorized as Well Capitalized Capital, Tier 1 capital to average assets	$ 256,731	$ 225,514
Minimum to Be Categorized as Well Capitalized Percentage, Total capital to risk-weighted assets	10.00%	10.00%
Minimum to Be Categorized as Well Capitalized Percentage, Tier 1 capital to risk-weighted assets	8.00%	8.00%
Minimum to Be Categorized as Well Capitalized Percentage, Common equity Tier 1 capital to risk-weighted assets	6.50%	6.50%
Minimum to Be Categorized as Well Capitalized Percentage, Tier 1 capital to average assets	5.00%	5.00%

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Detail) - USD ($)	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	$ 6,394,000	$ 9,316,000	$ 2,874,000
Minimum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unpaid principal balance of Non-accrual Non-PCI loans reviewed individually for amount of impairment	100,000
Maximum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unpaid principal balance of Non-accrual Non-PCI loans reviewed collectively for amount of impairment	100,000
Significant Observable Inputs with No Active Market with Identical Characteristics [Member] | Non-recurring Basis [Member] | Nonperforming Loans Held For Sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	$ 0	$ 0

Fair Value Measurements - Asset

Fair Value Measurements - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	$ 578,804	$ 516,964
Collateralized mortgage obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	117,768	76,451
U.S. government agency securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	7,414	7,441
Other securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	22,386	22,394
Recurring Basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	578,804	516,964
Recurring Basis [Member] | SBA loan pools securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale		4,146
Recurring Basis [Member] | Municipal bonds-tax exempt [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	127,475	158,030
Recurring Basis [Member] | Municipal bonds-taxable [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale		13,701
Recurring Basis [Member] | Collateralized mortgage obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	117,768	76,451
Recurring Basis [Member] | Mortgage-backed securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	303,609	229,630
Recurring Basis [Member] | U.S. government agency securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	7,414	7,441
Recurring Basis [Member] | Corporate bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale		5,015
Recurring Basis [Member] | U.S treasury securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	152	156
Recurring Basis [Member] | Other securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	22,386	22,394
Recurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	22,538	22,550
Recurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets [Member] | SBA loan pools securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale		0
Recurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets [Member] | Municipal bonds-tax exempt [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	0	0
Recurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets [Member] | Municipal bonds-taxable [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale		0
Recurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets [Member] | Collateralized mortgage obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	0	0
Recurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets [Member] | Mortgage-backed securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	0	0
Recurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets [Member] | U.S. government agency securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	0	0
Recurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets [Member] | Corporate bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale		0
Recurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets [Member] | U.S treasury securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	152	156
Recurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets [Member] | Other securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	22,386	22,394
Recurring Basis [Member] | Significant Observable Inputs with No Active Market with Identical Characteristics [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	556,266	494,414
Recurring Basis [Member] | Significant Observable Inputs with No Active Market with Identical Characteristics [Member] | SBA loan pools securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale		4,146
Recurring Basis [Member] | Significant Observable Inputs with No Active Market with Identical Characteristics [Member] | Municipal bonds-tax exempt [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	127,475	158,030
Recurring Basis [Member] | Significant Observable Inputs with No Active Market with Identical Characteristics [Member] | Municipal bonds-taxable [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale		13,701
Recurring Basis [Member] | Significant Observable Inputs with No Active Market with Identical Characteristics [Member] | Collateralized mortgage obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	117,768	76,451
Recurring Basis [Member] | Significant Observable Inputs with No Active Market with Identical Characteristics [Member] | Mortgage-backed securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	303,609	229,630
Recurring Basis [Member] | Significant Observable Inputs with No Active Market with Identical Characteristics [Member] | U.S. government agency securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	7,414	7,441
Recurring Basis [Member] | Significant Observable Inputs with No Active Market with Identical Characteristics [Member] | Corporate bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale		5,015
Recurring Basis [Member] | Significant Observable Inputs with No Active Market with Identical Characteristics [Member] | U.S treasury securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	0	0
Recurring Basis [Member] | Significant Observable Inputs with No Active Market with Identical Characteristics [Member] | Other securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	0	0
Recurring Basis [Member] | Significant Unobservable Inputs [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	0	0
Recurring Basis [Member] | Significant Unobservable Inputs [Member] | SBA loan pools securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale		0
Recurring Basis [Member] | Significant Unobservable Inputs [Member] | Municipal bonds-tax exempt [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	0	0
Recurring Basis [Member] | Significant Unobservable Inputs [Member] | Municipal bonds-taxable [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale		0
Recurring Basis [Member] | Significant Unobservable Inputs [Member] | Collateralized mortgage obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	0	0
Recurring Basis [Member] | Significant Unobservable Inputs [Member] | Mortgage-backed securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	0	0
Recurring Basis [Member] | Significant Unobservable Inputs [Member] | U.S. government agency securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	0	0
Recurring Basis [Member] | Significant Unobservable Inputs [Member] | Corporate bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale		0
Recurring Basis [Member] | Significant Unobservable Inputs [Member] | U.S treasury securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	0	0
Recurring Basis [Member] | Significant Unobservable Inputs [Member] | Other securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	$ 0	$ 0

Fair Value Measurements - As103

Fair Value Measurements - Assets and Liabilities Measured at Fair Value on Non-Recurring Basis (Detail) - Non-recurring Basis [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unrealized losses impaired loans	$ 2,730	$ 868
Unrealized losses other real estate owned	0	0
Real estate loans [Member] | Impaired Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	6,700	17,800
Commercial and industrial loans [Member] | Impaired Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	1,700	3,800
Consumer loans [Member] | Impaired Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans		419
Commercial property loans [Member] | Other Real Estate Owned [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	237	5,400
Residential property loans [Member] | Other Real Estate Owned [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	1,700	2,100
Quoted Prices in Active Markets for Identical Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0	0
Other real estate owned	0	0
Significant Observable Inputs with No Active Market with Identical Characteristics [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	6,121	15,257
Other real estate owned	1,946	7,484
Significant Unobservable Inputs [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	2,436	6,767
Other real estate owned	$ 0	$ 0

Fair Value Measurements - Estim

Fair Value Measurements - Estimated Fair Values of Financial Instruments (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Financial assets:
Cash and due from banks	$ 153,826	$ 147,235
Securities available for sale	578,804	516,964
Accrued interest receivable	12,770	10,987
Financial liabilities:
Noninterest-bearing deposits	1,312,274	1,203,240
Interest-bearing deposits	3,036,380	2,606,497
Accrued interest payable	5,309	2,567
U.S. government agency securities [Member]
Financial assets:
Securities available for sale	7,414	7,441
Other securities [Member]
Financial assets:
Securities available for sale	22,386	22,394
Carrying Amount [Member]
Financial assets:
Cash and due from banks	153,826	147,235
Securities available for sale	578,804	516,964
Loans and leases receivable, net of allowance for loan and lease losses	4,273,415	3,812,340
Loans held for sale	6,394	9,316
Accrued interest receivable	12,770	10,987
FHLB stock	16,385	16,385
Financial liabilities:
Noninterest-bearing deposits	1,312,274	1,203,240
Interest-bearing deposits	3,036,380	2,606,497
Borrowings	267,270	333,978
Accrued interest payable	5,309	2,567
Off-balance sheet items:
Commitments to extend credit	318,634	310,987
Standby letters of credit	19,294	15,669
Commercial letters of credit	9,308	4,215
Fair Value [Member] | Quoted Prices in Active Markets for Identical Assets [Member]
Financial assets:
Cash and due from banks	153,826	147,235
Securities available for sale	22,538	22,550
Loans and leases receivable, net of allowance for loan and lease losses	0	0
Loans held for sale	0	0
Accrued interest receivable	12,770	10,987
FHLB stock	0	0
Financial liabilities:
Noninterest-bearing deposits	0	0
Interest-bearing deposits	0	0
Borrowings	0	0
Accrued interest payable	5,309	2,567
Off-balance sheet items:
Commitments to extend credit	0	0
Standby letters of credit	0	0
Commercial letters of credit	0	0
Fair Value [Member] | Significant Observable Inputs with No Active Market with Identical Characteristics [Member]
Financial assets:
Cash and due from banks	0	0
Securities available for sale	556,266	494,414
Loans and leases receivable, net of allowance for loan and lease losses	0	0
Loans held for sale	6,394	9,316
Accrued interest receivable	0	0
FHLB stock	16,385	16,385
Financial liabilities:
Noninterest-bearing deposits	1,312,274	1,203,240
Interest-bearing deposits	0	0
Borrowings	0	0
Accrued interest payable	0	0
Off-balance sheet items:
Commitments to extend credit	0	0
Standby letters of credit	0	0
Commercial letters of credit	0	0
Fair Value [Member] | Significant Unobservable Inputs [Member]
Financial assets:
Cash and due from banks	0	0
Securities available for sale	0	0
Loans and leases receivable, net of allowance for loan and lease losses	4,213,689	3,789,579
Loans held for sale	0	0
Accrued interest receivable	0	0
FHLB stock	0	0
Financial liabilities:
Noninterest-bearing deposits	0	0
Interest-bearing deposits	2,973,139	2,541,929
Borrowings	267,270	333,978
Accrued interest payable	0	0
Off-balance sheet items:
Commitments to extend credit	318,634	310,987
Standby letters of credit	19,294	15,669
Commercial letters of credit	$ 9,308	$ 4,215

Share-based Compensation - Addi

Share-based Compensation - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2017planshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of incentive plans | plan	3
Number of shares of common stock to be granted under equity incentive awards	1,500,000
Shares available for issuance under the Plan	533,541
Stock options, expiration term from date of grant	10 years
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period of continuous service	3 years
Minimum [Member] | Restricted stock awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options, expiration term from date of grant	3 years
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period of continuous service	5 years
Maximum [Member] | Restricted stock awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options, expiration term from date of grant	5 years

Share-based Compensation - Shar

Share-based Compensation - Share-Based Compensation Expense and Related Tax Benefits (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-based compensation expense	$ 2,893	$ 3,008	$ 2,241
Related tax benefits	$ 1,179	$ 1,191	$ 755

Share-based Compensation - Unre

Share-based Compensation - Unrecognized Share-Based Compensation Expense (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2017USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Expense	$ 4,659
Average Expected Recognition Period	1 year 8 months 15 days
Stock option awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Expense	$ 11
Average Expected Recognition Period	5 months 2 days
Restricted stock awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Expense	$ 4,648
Average Expected Recognition Period	1 year 8 months

Share-based Compensation - Weig

Share-based Compensation - Weighted-Average Assumptions Used to Estimate Fair Value Per Share of Options Granted (Detail)	12 Months Ended
	Dec. 31, 2015
Weighted-average assumption
Dividend yield	1.80%
Expected volatility	25.00%
Expected term	3 years
Risk-free interest rate	1.11%

Share-based Compensation - Summ

Share-based Compensation - Summary of Information under Plans (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Grant date fair value of options granted	$ 0	$ 0	$ 78
Fair value of options vested	820	2,322	2,668
Total intrinsic value of options exercised	432	1,862	488
Proceeds from exercise of stock options	$ 288	$ 1,453	$ 616
Weighted-average estimated fair value per share of options granted (in usd per share)	$ 0	$ 0	$ 3.62

Share-based Compensation - S110

Share-based Compensation - Summary of Stock Option Transactions under Plans (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Number of Shares, options outstanding at beginning of period	387,901	510,148	603,872
Number of Shares, Options granted	0	0	28,000
Number of Shares, Options exercised	(23,813)	(94,997)	(46,516)
Number of Shares, Options forfeited	0	(125)	(71,608)
Number of Shares, Options expired	0	(27,125)	(3,600)
Number of Shares, Options outstanding at end of period	364,088	387,901	510,148
Number of Shares, Options exercisable at end of period	354,753	341,561	333,460
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Weighted-Average Exercise Price Per Share, Options outstanding at beginning of period (in usd per share)	$ 17.49	$ 24.38	$ 23.78
Weighted-Average Exercise Price Per Share, Options granted (in usd per share)	0	0	23.47
Weighted-Average Exercise Price Per Share, Options exercised (in usd per share)	12.21	15.29	13.24
Weighted-Average Exercise Price Per Share, Options forfeited (in usd per share)	0	144	20.59
Weighted-Average Exercise Price Per Share, Options expired (in usd per share)	0	154.09	136.79
Weighted-Average Exercise Price Per Share, Options outstanding at end of period (in usd per share)	17.86	17.49	24.38
Weighted-Average Exercise Price Per Share, Options exercisable at end of period (in usd per share)	$ 17.71	$ 16.85	$ 27.16

Share-based Compensation - S111

Share-based Compensation - Summary of Transactions for Non-Vested Stock Options (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward]
Number of Shares, Non-vested options outstanding at beginning of period	46,340	176,688	379,106
Number of Shares, Options granted	0	0	28,000
Number of Shares, Options vested	(37,005)	(130,223)	(158,810)
Number of Shares, Options forfeited	0	(125)	(71,608)
Number of Shares, Non-vested options outstanding at end of period	9,335	46,340	176,688
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Weighted-Average Exercise Price Per Share, Non-vested options outstanding at beginning of period (in usd per share)	$ 22.42	$ 19.13	$ 18.11
Weighted-Average Exercise Price Per Share, Options granted (in usd per share)	0	0	23.47
Weighted-Average Exercise Price Per Share, Options vested (in usd per share)	22.16	17.83	16.80
Weighted-Average Exercise Price Per Share, Options forfeited (in usd per share)	0	144	20.59
Weighted-Average Exercise Price Per Share, Non-vested options outstanding at end of period (in usd per share)	$ 23.47	$ 22.42	$ 19.13

Share-based Compensation - S112

Share-based Compensation - Summary of Stock Options Outstanding under Plans (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Number of Shares	364,088	387,901	510,148	603,872
Options Outstanding, Intrinsic Value	$ 4,548
Options Outstanding, Weighted-Average Exercise Price Per Share (in usd per share)	$ 17.86	$ 17.49	$ 24.38	$ 23.78
Options Outstanding, Weighted-Average Remaining Contractual Life
Options Exercisable, Number of Shares	354,753	341,561	333,460
Options Exercisable, Intrinsic Value	$ 4,483
Options Exercisable, Weighted-Average Exercise Price Per Share (in usd per share)	$ 17.71	$ 16.85	$ 27.16
Options Exercisable, Weighted-Average Remaining Contractual Life
Intrinsic value of stock options outstanding (in usd per share)	$ 30.35
$10.88 to $14.99 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price Range, Lower Limit (in usd per share)	10.88
Exercise Price Range, Upper Limit (in usd per share)	$ 14.99
Options Outstanding, Number of Shares	13,088
Options Outstanding, Intrinsic Value	$ 235
Options Outstanding, Weighted-Average Exercise Price Per Share (in usd per share)	$ 12.37
Options Outstanding, Weighted-Average Remaining Contractual Life	4 years 7 months
Options Exercisable, Number of Shares	13,088
Options Exercisable, Intrinsic Value	$ 235
Options Exercisable, Weighted-Average Exercise Price Per Share (in usd per share)	$ 12.37
Options Exercisable, Weighted-Average Remaining Contractual Life	4 years 7 months
$15.00 to $19.99 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price Range, Lower Limit (in usd per share)	$ 15
Exercise Price Range, Upper Limit (in usd per share)	$ 19.99
Options Outstanding, Number of Shares	255,000
Options Outstanding, Intrinsic Value	$ 3,550
Options Outstanding, Weighted-Average Exercise Price Per Share (in usd per share)	$ 16.43
Options Outstanding, Weighted-Average Remaining Contractual Life	5 years 8 months
Options Exercisable, Number of Shares	255,000
Options Exercisable, Intrinsic Value	$ 3,550
Options Exercisable, Weighted-Average Exercise Price Per Share (in usd per share)	$ 16.43
Options Exercisable, Weighted-Average Remaining Contractual Life	5 years 8 months
$20.00 to $24.83 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price Range, Lower Limit (in usd per share)	$ 20
Exercise Price Range, Upper Limit (in usd per share)	$ 24.83
Options Outstanding, Number of Shares	96,000
Options Outstanding, Intrinsic Value	$ 763
Options Outstanding, Weighted-Average Exercise Price Per Share (in usd per share)	$ 22.41
Options Outstanding, Weighted-Average Remaining Contractual Life	6 years 8 months
Options Exercisable, Number of Shares	86,665
Options Exercisable, Intrinsic Value	$ 698
Options Exercisable, Weighted-Average Exercise Price Per Share (in usd per share)	$ 22.29
Options Exercisable, Weighted-Average Remaining Contractual Life	6 years 7 months

Share-based Compensation - Sche

Share-based Compensation - Schedule of Restricted Stock Awards under 2013 Plan (Detail) - Restricted stock awards [Member] - $ / shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Number of Shares, Restricted stock at beginning of period	343,958	137,114	173,222
Number of Shares, Restricted stock granted	127,239	287,179	58,092
Number of Shares, Restricted stock vested	(139,298)	(77,515)	(68,017)
Number of Shares, Restricted stock forfeited	(14,116)	(2,820)	(26,183)
Number of Shares, Restricted stock at end of period	317,783	343,958	137,114
Weighted-Average Grant Date Fair Value Per Share, Restricted stock at beginning of period (in usd per share)	$ 16.60	$ 20.74	$ 19.58
Weighted-Average Grant Date Fair Value Per Share, Restricted stock granted (in usd per share)	31.06	15.52	22.53
Weighted-Average Grant Date Fair Value Per Share, Restricted stock vested (in usd per share)	18.73	19.75	19.16
Weighted-Average Grant Date Fair Value Per Share, Restricted stock forfeited (in usd per share)	24.73	21.58	21.16
Weighted-Average Grant Date Fair Value Per Share, Restricted stock at end of period (in usd per share)	$ 21.09	$ 16.60	$ 20.74

Earnings per Share - Reconcilia

Earnings per Share - Reconciliation of Components Used to Derive Basic and Diluted EPS (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Earnings Per Share [Abstract]
Net income	$ 11,497	$ 14,923	$ 14,457	$ 13,783	$ 14,416	$ 13,121	$ 14,148	$ 14,804	$ 54,660	$ 56,489	$ 53,823
Less: income allocated to unvested restricted shares									339	457
Income from continuing operations, net of taxes											53,823
Income (loss) from discontinued operations											145
Net Income (Loss) Available to Common Stockholders, Basic									54,321	56,032	53,678
Income allocated to common shares									$ 54,321	$ 56,032	$ 53,678
Weighted-average shares for basic EPS (shares)									32,071,585	31,899,582	31,788,215
Effect of dilutive securities - options, warrants and unvested restricted stock (shares)									178,333	149,122	88,605
Weighted-average shares for diluted EPS									32,249,918	32,048,704	31,876,820
Net income per share, basic (in usd per share)									$ 1.71	$ 1.77
Net income per share, diluted (in usd per share)									1.70	1.76
Income from continuing operations, net of taxes (in usd per share)											$ 1.69
Effect of dilutive securities (in USD per share)									0.01	0.01
Loss from discontinued operations, net of taxes (in usd per share)											0
Basic earnings per share (in usd per share)	$ 0.36	$ 0.46	$ 0.45	$ 0.43	$ 0.45	$ 0.41	$ 0.44	$ 0.46	1.70	1.76	1.69
Income from continuing operations, net of taxes (in usd per share)											1.68
Net loss from discontinued operation per diluted share (in usd per share)											0
Diluted earnings per share (in usd per share)	$ 0.36	$ 0.46	$ 0.45	$ 0.43	$ 0.45	$ 0.41	$ 0.44	$ 0.46	$ 1.69	$ 1.75	$ 1.68

Earnings per Share - Additional

Earnings per Share - Additional Information (Detail) - shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Stock option awards [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive shares	0	74,389	30,250

Employee Benefits - Additional

Employee Benefits - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Bank-Owned Life Insurance [Member]
Defined Contribution Plan Disclosure [Line Items]
Cash surrender value	$ 50.6
Section 401(k) Plan [Member]
Defined Contribution Plan Disclosure [Line Items]
Percent of participant contributions (percent)	75.00%
Percent of employer contribution (up to, percent)	8.00%
Contributions	$ 2	$ 1.9	$ 1.6

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Operating leases initial non-cancelable lease term	1 year
Rental expenses	$ 7	$ 6.6	$ 7.6

Commitments and Contingencie118

Commitments and Contingencies - Future Minimum Annual Rental Commitments under Non-Cancelable Operating Leases (Detail) $ in Thousands	Dec. 31, 2017USD ($)
Commitments and Contingencies Disclosure [Abstract]
2,018	$ 5,621
2,019	4,759
2,020	4,244
2,021	2,746
2,022	2,138
Thereafter	7,743
Total	$ 27,251

Off-Balance Sheet Commitments -

Off-Balance Sheet Commitments - Distribution of Undisbursed Loan Commitments (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Loss Contingencies [Line Items]
Total undisbursed loan commitments	$ 347,236	$ 330,871
Commitments to extend credit [Member]
Loss Contingencies [Line Items]
Total undisbursed loan commitments	318,634	310,987
Standby letters of credit [Member]
Loss Contingencies [Line Items]
Total undisbursed loan commitments	19,294	15,669
Commercial letters of credit [Member]
Loss Contingencies [Line Items]
Total undisbursed loan commitments	$ 9,308	$ 4,215

Off-Balance Sheet Commitment120

Off-Balance Sheet Commitments - Allowance for Off-Balance Sheet Commitments (Details) - Allowance for off-balance sheet items [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	$ 1,184	$ 986	$ 1,366
Provision (income)	112	198	(380)
Balance at end of period	$ 1,296	$ 1,184	$ 986

Liquidity - Additional Informat

Liquidity - Additional Information (Detail)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Jun. 30, 2014USD ($)Financial_Institution	Dec. 31, 2012USD ($)
Line of Credit Facility [Line Items]
Cash on deposit with bank subsidiary	$ 4,348,654,000	$ 3,809,737,000
Percentage of borrowings from FHLB (up to)	1.41%
Total borrowing capacity based on pledged collateral	$ 802,900,000
Borrowing capacity available based on pledged collateral	652,900,000
Bank's FHLB borrowings	150,000,000	315,000,000
Borrowings	0
Line of credit			$ 95,000,000
Number of financial institutions | Financial_Institution			3
Hanmi Bank [Member]
Line of Credit Facility [Line Items]
Cash on deposit with bank subsidiary	13,100,000
Broker deposits	$ 187,300,000
Percentage of borrowings from FHLB (up to)	30.00%
Total borrowing capacity based on pledged collateral	$ 802,900,000	736,600,000
Borrowing capacity available based on pledged collateral	652,900,000	421,600,000
Bank's FHLB borrowings	150,000,000	$ 315,000,000
Amount available from borrowing source	8,500,000
Carrying value for loans pledged by Bank	9,000,000
Borrowings	$ 0
Maximum borrowing capacity of line of credit				$ 100,000,000

Condensed Financial Informat122

Condensed Financial Information of Parent Company - Balance Sheets of Parent Company (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Assets
Total assets	$ 5,210,485	$ 4,701,346
Liabilities:
Subordinated debentures	117,270	18,978
Other liabilities	25,972	23,061
Total liabilities	4,648,008	4,170,321
Stockholders’ equity	562,477	531,025	$ 493,918	$ 453,387
Total liabilities and stockholders’ equity	5,210,485	4,701,346
Hanmi Financial [Member]
Assets
Cash	13,087	3,885
Investment in consolidated subsidiaries	666,371	540,672
Other assets	831	5,572
Total assets	680,289	550,129
Liabilities:
Subordinated debentures	117,270	18,978
Other liabilities	542	126
Total liabilities	117,812	19,104
Stockholders’ equity	562,477	531,025
Total liabilities and stockholders’ equity	$ 680,289	$ 550,129

Condensed Financial Informat123

Condensed Financial Information of Parent Company - Statement of Income of Parent Company (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Condensed Income Statements, Captions [Line Items]
Interest expense	$ (9,440)	$ (8,936)	$ (8,148)	$ (5,995)	$ (5,247)	$ (4,743)	$ (4,179)	$ (4,105)	$ (32,519)	$ (18,274)	$ (16,109)
Other operating expenses									(10,868)	(10,993)	(10,806)
Income tax benefit	(13,049)	(9,890)	(9,057)	(8,628)	(9,611)	(8,248)	(8,857)	(6,183)	(40,624)	(32,899)	(38,182)
Equity in undistributed earnings of subsidiary									339	457
Net income	$ 11,497	$ 14,923	$ 14,457	$ 13,783	$ 14,416	$ 13,121	$ 14,148	$ 14,804	54,660	56,489	53,823
Hanmi Financial [Member]
Condensed Income Statements, Captions [Line Items]
Dividends from bank subsidiary									22,619	8,978	15,129
Interest expense									(5,353)	(825)	(623)
Other operating expenses									(5,291)	(5,188)	(4,639)
Income before taxes and undistributed income									11,975	2,965	9,867
Income tax benefit									7,513	2,382	2,140
Income before undistributed income of subsidiary									19,488	5,347	12,007
Equity in undistributed earnings of subsidiary									35,172	51,142	41,816
Net income									$ 54,660	$ 56,489	$ 53,823

Condensed Financial Informat124

Condensed Financial Information of Parent Company - Statement of Cash Flows of Parent Company (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash Flows from Operating Activities:
Net income	$ 11,497	$ 14,923	$ 14,457	$ 13,783	$ 14,416	$ 13,121	$ 14,148	$ 14,804	$ 54,660	$ 56,489	$ 53,823
Adjustments to reconcile net income to net cash used in operating activities:
Share-based compensation expense									2,893	3,008	2,241
Change in other liabilities									1,113	(8,346)	(11,596)
Net cash provided by operating activities									79,864	54,383	66,530
Cash flows from investing activities:
Cash paid for repurchases of vested shares due to employee tax liability									97,271	78,282	454,201
Net cash used in investing activities									(518,392)	(491,486)	(20,267)
Cash flows from financing activities:
Proceeds from exercise of stock options and stock warrants									288	1,453	616
Cash paid for repurchases of vested shares due to employee tax liability									97,828	0	0
Cash dividend paid									(25,811)	(25,661)	(12,783)
Net cash provided by (used in) financing activities									445,119	419,974	(40,219)
Net increase (decrease) in cash									6,591	(17,129)	6,044
Cash and cash equivalents at beginning of year				147,235				164,364	147,235	164,364	158,320
Cash and cash equivalents at end of period	153,826				147,235				153,826	147,235	164,364
Hanmi Financial [Member]
Cash Flows from Operating Activities:
Net income									54,660	56,489	53,823
Adjustments to reconcile net income to net cash used in operating activities:
Income from subsidiary									(35,172)	(51,141)	(56,840)
Amortization of subordinated debentures									463	275	159
Share-based compensation expense									2,893	3,008	2,241
Change in other assets and liabilities									5,156	(95)	(2,680)
Net cash provided by operating activities									28,000	8,536	(3,297)
Cash flows from investing activities:
Cash paid for repurchases of vested shares due to employee tax liability									0	0	0
Cash acquired in acquisition, net of cash consideration paid									0	0	0
Proceeds from Hanmi Bank									0	0	12,782
Payments to Hanmi Bank									(90,000)	0	0
Net cash used in investing activities									(90,000)	0	12,782
Cash flows from financing activities:
Proceeds from exercise of stock options and stock warrants									288	1,453	616
Proceeds from issuance of long-term debt									97,828	0	0
Cash paid for repurchases of vested shares due to employee tax liability									(1,103)	(579)	(349)
Cash dividend paid									(25,811)	(21,185)	(12,780)
Net cash provided by (used in) financing activities									71,202	(20,311)	(12,513)
Net increase (decrease) in cash									9,202	(11,775)	(3,028)
Cash and cash equivalents at beginning of year				$ 3,885				$ 15,660	3,885	15,660	18,688
Cash and cash equivalents at end of period	$ 13,087				$ 3,885				$ 13,087	$ 3,885	$ 15,660

Quarterly Financial Data (Un125

Quarterly Financial Data (Unaudited) - Summary of Quarterly Financial Data (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Quarterly Financial Information Disclosure [Abstract]
Interest and dividend income	$ 55,784	$ 53,862	$ 51,326	$ 48,349	$ 47,313	$ 44,325	$ 44,159	$ 42,674	$ 209,321	$ 178,471	$ 164,226
Interest expense	9,440	8,936	8,148	5,995	5,247	4,743	4,179	4,105	32,519	18,274	16,109
Net interest income before provision for loan and lease losses	46,344	44,926	43,178	42,354	42,066	39,582	39,980	38,569	176,802	160,197	148,117
Loan and lease loss provision (income)	220	269	422	(80)	151	(1,450)	(1,515)	(1,525)	831	(4,339)	(11,614)
Non-interest income	7,680	8,816	9,702	7,217	8,067	8,674	9,373	6,961	33,415	33,075	47,602
Non-interest expense	29,258	28,660	28,944	27,240	25,955	28,337	27,863	26,068	114,102	108,223	115,328
Income before provision for income taxes	24,546	24,813	23,514	22,411	24,027	21,369	23,005	20,987
Provision for income taxes	13,049	9,890	9,057	8,628	9,611	8,248	8,857	6,183	40,624	32,899	38,182
Net income	$ 11,497	$ 14,923	$ 14,457	$ 13,783	$ 14,416	$ 13,121	$ 14,148	$ 14,804	$ 54,660	$ 56,489	$ 53,823
Basic earnings per share:
Basic earnings per share (in usd per share)	$ 0.36	$ 0.46	$ 0.45	$ 0.43	$ 0.45	$ 0.41	$ 0.44	$ 0.46	$ 1.70	$ 1.76	$ 1.69
Diluted earnings per share:
Diluted earnings per share (in usd per share)	$ 0.36	$ 0.46	$ 0.45	$ 0.43	$ 0.45	$ 0.41	$ 0.44	$ 0.46	$ 1.69	$ 1.75	$ 1.68