Hanmi Financial (HAFC) 10-Q 10 May 18 2018 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2018	May 07, 2018
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2018
Document Fiscal Year focus	2,018
Document Fiscal Year Focus	Q1
Trading Symbol	HAFC
Entity Registrant Name	HANMI FINANCIAL CORP
Entity Central Index Key	1,109,242
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		32,496,604

Consolidated Balance Sheets (Un

Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Assets
Cash and due from banks	$ 151,611	$ 153,826
Securities available for sale, at fair value (amortized cost of $581,874 as of March 31, 2018 and $581,992 as of December 31, 2017)	570,351	578,804
Loans held for sale, at the lower of cost or fair value	6,008	6,394
Loans and leases receivable, net of allowance for loan and lease losses of $31,777 as of March 31, 2018 and $31,043 as of December 31, 2017	4,381,780	4,273,415
Accrued interest receivable	12,751	12,770
Premises and equipment, net	26,465	26,655
Other real estate owned (OREO), net	1,660	1,946
Customers’ liability on acceptances	870	803
Servicing assets	9,867	10,218
Goodwill and other intangible assets, net	12,454	12,544
Federal Home Loan Bank (FHLB) stock, at cost	16,385	16,385
Bank-owned life insurance	50,831	50,554
Prepaid expenses and other assets	66,268	68,117
Total assets	5,305,641	5,210,485
Deposits:
Noninterest-bearing	1,352,162	1,312,274
Interest-bearing	3,025,939	3,036,380
Total deposits	4,378,101	4,348,654
Accrued interest payable	5,931	5,309
Bank’s liability on acceptances	870	803
Borrowings	220,000	150,000
Subordinated debentures	117,400	117,270
Accrued expenses and other liabilities	19,061	25,972
Total liabilities	4,741,363	4,648,008
Stockholders’ equity:
Common stock, $0.001 par value; authorized 62,500,000 shares; issued 33,167,768 shares (32,502,658 shares outstanding) as of March 31, 2018 and issued 33,083,133 shares (32,431,627 shares outstanding) as of December 31, 2017	33	33
Additional paid-in capital	567,081	565,627
Accumulated other comprehensive loss, net of tax benefit of $3,316 as of March 31, 2018 and $1,319 as of December 31, 2017	(8,207)	(1,869)
Retained earnings	77,691	70,575
Less: treasury stock, at cost; 665,110 shares as of March 31, 2018 and 651,506 shares as of December 31, 2017	(72,320)	(71,889)
Total stockholders’ equity	564,278	562,477
Total liabilities and stockholders’ equity	$ 5,305,641	$ 5,210,485

Consolidated Balance Sheets (U3

Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Amortized cost of securities available for sale	$ 581,874	$ 581,992
Allowance for loan losses of loans receivable	$ 31,777	$ 31,043
Common stock, par value (in usd per share)	$ 0.001	$ 0.001
Common stock authorized (shares)	62,500,000	62,500,000
Common stock issued (shares)	33,167,768	33,083,133
Common stock outstanding (shares)	32,502,658	32,431,627
Accumulated other comprehensive loss, tax expense/(benefit)	$ 3,316	$ 1,319
Treasury stock (shares)	665,110	651,506

Consolidated Statements of Inco

Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Interest and dividend income:
Interest and fees on loans and leases	$ 51,574	$ 45,378
Interest on securities	3,105	2,520
Dividends on FHLB stock	289	374
Interest on deposits in other banks	114	77
Total interest and dividend income	55,082	48,349
Interest expense:
Interest on deposits	7,785	5,154
Interest on borrowings	679	468
Interest on subordinated debentures	1,694	373
Total interest expense	10,158	5,995
Net interest income before provision for loan and lease losses	44,924	42,354
Loan and lease loss provision (income)	649	(80)
Net interest income after provision for loan and lease losses	44,275	42,434
Noninterest income:
Service charges on deposit accounts	2,511	2,528
Trade finance and other service charges and fees	1,173	1,047
Gain on sales of Small Business Administration (SBA) loans	1,448	1,464
Disposition gains on Purchased Credit Impaired (PCI) loans	133	183
Net (loss) gain on sales of securities	(428)	269
Other operating income	1,224	1,726
Total noninterest income	6,061	7,217
Noninterest expense:
Salaries and employee benefits	18,702	17,104
Occupancy and equipment	4,072	3,982
Data processing	1,678	1,631
Professional fees	1,369	1,148
Supplies and communications	708	635
Advertising and promotion	876	802
Other operating expenses	2,352	1,938
Total noninterest expense	29,757	27,240
Income before income tax expense	20,579	22,411
Income tax expense	5,724	8,628
Net income	$ 14,855	$ 13,783
Basic earnings per share (in usd per share)	$ 0.46	$ 0.43
Diluted earnings per share (in usd per share)	$ 0.46	$ 0.43
Weighted-average shares outstanding:
Basic (shares)	32,145,214	32,001,766
Diluted (shares)	32,301,095	32,191,458

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 14,855	$ 13,783
Unrealized gain (loss) on securities:
Unrealized holding (loss) gain arising during period	(8,864)	1,620
Less: reclassification adjustment for net loss (gain) included in net income	0	(269)
Income tax benefit (expense) related to items of other comprehensive income	2,543	(560)
Other comprehensive (loss) income, net of tax	(6,321)	791
Comprehensive income	$ 8,534	$ 14,574

Consolidated Statements of Chan

Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock - Number of Shares, Shares Issued [Member]	Common Stock - Number of Shares, Treasury Shares [Member]	Stockholders' Equity Additional Paid-in Capital [Member]	Stockholders' Equity Accumulated Other Comprehensive Income (Loss) [Member]	Stockholders' Equity Retained Earnings [Member]
Balance at beginning of period at Dec. 31, 2016	$ 531,025	$ 33	$ (70,786)	$ 562,446	$ (2,394)	$ 41,726
Beginning balance, shares issued (shares) at Dec. 31, 2016		32,946,197
Beginning balance, treasury stock (shares) at Dec. 31, 2016			(615,450)
Beginning balance, shares outstanding (shares) at Dec. 31, 2016	32,330,747
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock options exercised	$ 13			13
Stock options exercised (shares)	1,000	1,000
Restricted stock awards, net of forfeitures	$ 0			0
Restricted stock awards, net of forfeitures (shares)	81,411	81,411
Share-based compensation expense	$ 692			692
Restricted stock surrendered due to employee tax liability	$ (648)		$ (648)
Restricted stock surrendered due to employee tax liability (shares)	(20,578)		(20,578)
Cash dividends declared	$ (6,114)					(6,114)
Net income	13,783					13,783
Change in unrealized gain (loss) on securities available for sale, net of income taxes	791				791
Balance at end of period at Mar. 31, 2017	$ 539,542	$ 33	$ (71,434)	563,151	(1,603)	49,395
Ending balance, shares issued (shares) at Mar. 31, 2017		33,028,608
Ending balance, treasury stock (shares) at Mar. 31, 2017			(636,028)
Ending balance, shares outstanding (shares) at Mar. 31, 2017	32,392,580
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Adjustments related to adoption of new accounting standards:
Adjustments related to adoption of new accounting standards: | ASU 2016-01 [Member]	0					(382)
Adjustments related to adoption of new accounting standards: | ASU 2018-02 [Member]	0					399
Adjusted balance at January 1, 2018	562,477	33	$ (71,889)	565,627	(1,886)	70,592
Balance at beginning of period at Dec. 31, 2017	$ 562,477	$ 33	$ (71,889)	565,627	(1,869)	70,575
Beginning balance, shares issued (shares) at Dec. 31, 2017		33,083,133
Beginning balance, treasury stock (shares) at Dec. 31, 2017	(651,506)		(651,506)
Beginning balance, shares outstanding (shares) at Dec. 31, 2017	32,431,627
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock options exercised	$ 570			570
Stock options exercised (shares)	25,750	25,750
Restricted stock awards, net of forfeitures	$ 0			0
Restricted stock awards, net of forfeitures (shares)	58,885	58,885
Share-based compensation expense	$ 884			884
Restricted stock surrendered due to employee tax liability	$ (431)		$ (431)
Restricted stock surrendered due to employee tax liability (shares)	(13,604)		(13,604)
Cash dividends declared	$ (7,756)					(7,756)
Net income	14,855					14,855
Change in unrealized gain (loss) on securities available for sale, net of income taxes	(6,321)				(6,321)
Balance at end of period at Mar. 31, 2018	$ 564,278	$ 33	$ (72,320)	$ 567,081	$ (8,207)	$ 77,691
Ending balance, shares issued (shares) at Mar. 31, 2018		33,167,768
Ending balance, treasury stock (shares) at Mar. 31, 2018	(665,110)		(665,110)
Ending balance, shares outstanding (shares) at Mar. 31, 2018	32,502,658

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities:
Net income	$ 14,855	$ 13,783
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	1,757	3,885
Share-based compensation expense	884	692
Loan and lease loss provision (income)	649	(80)
Gain (loss) on sales of securities	428	(269)
Gain on sales of SBA loans	(1,448)	(1,464)
Disposition gains on PCI loans	(133)	(183)
Origination of SBA loans held for sale	(18,805)	(19,192)
Proceeds from sales of SBA loans	20,981	21,414
Change in accrued interest receivable	19	213
Change in bank-owned life insurance	(277)	(282)
Change in prepaid expenses and other assets	5,192	5,117
Change in accrued interest payable	622	52
Change in accrued expenses and other liabilities	(6,357)	(3,569)
Net cash provided by operating activities	18,367	20,117
Cash flows from investing activities:
Proceeds from matured, called and repayment of securities	22,495	17,404
Proceeds from sales of securities available for sale	21,958	12,573
Proceeds from sales of other real estate owned (OREO)	0	3,349
Change in loans and leases receivable, excluding purchases	(70,838)	(66,556)
Purchases of securities	(46,641)	(60,960)
Purchases of premises and equipment	(481)	(411)
Purchases of loans receivable	(38,905)	(33,573)
Net cash used in investing activities	(112,412)	(128,174)
Cash flows from financing activities:
Change in deposits	29,447	273,428
Change in overnight FHLB borrowings	70,000	(265,000)
Issuance of subordinated debentures	0	97,735
Proceeds from exercise of stock options	570	13
Cash paid for treasury shares acquired in respect of share-based compensation	(431)	(648)
Cash dividends paid	(7,756)	(6,114)
Net cash provided by financing activities	91,830	99,414
Net decrease in cash and cash equivalents	(2,215)	(8,643)
Cash and cash equivalents at beginning of year	153,826	147,235
Cash and cash equivalents at end of period	151,611	138,592
Cash paid (received) during the period for:
Interest	9,536	5,943
Income taxes	39	(101)
Non-cash activities:
Income tax benefit (expense) related to items in other comprehensive income	2,543	(560)
Change in unrealized loss (gain) in accumulated other comprehensive income	8,864	(1,620)
Cash dividends declared	$ (7,756)	$ (6,114)

Organization and Basis of Prese

Organization and Basis of Presentation	3 Months Ended
	Mar. 31, 2018
Accounting Policies [Abstract]
Organization and Basis of Presentation	Organization and Basis of Presentation Hanmi Financial Corporation (“Hanmi Financial,” the “Company,” “we,” “us” or “our”) is a bank holding company whose subsidiary is Hanmi Bank (the “Bank”). Our primary operations are related to traditional banking activities, including the acceptance of deposits and the lending and investing of money through the operation of the Bank. In management’s opinion, the accompanying unaudited consolidated financial statements of Hanmi Financial and its subsidiaries reflect all adjustments of a normal and recurring nature that are necessary for a fair presentation of the results for the interim period ended March 31, 2018 , but are not necessarily indicative of the results that will be reported for the entire year or any other interim period. Certain information and footnote disclosures normally included in annual financial statements prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) have been condensed or omitted. The aforementioned unaudited consolidated financial statements are in conformity with GAAP. Such interim consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q pursuant to the rules and regulations of the Securities and Exchange Commission. The interim information should be read in conjunction with our Annual Report on Form 10-K for the fiscal year ended December 31, 2017 (the “ 2017 Annual Report on Form 10-K”). The preparation of interim consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the 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. Material estimates subject to change include, among other items, the determination of allowance for loan and lease losses and various other assets and liabilities measured at fair value. Actual results could differ from those estimates. Descriptions of our significant accounting policies are included in Note 1 - Summary of Significant Accounting Policies in the Notes to Consolidated Financial Statements in our 2017 Annual Report on Form 10-K. During the three months ended March 31, 2018, the Company adopted Accounting Standards Update ("ASU") 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities (Topic 825) and ASU 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income (Topic 220). Summaries of ASU 2016-01 and 2018-02 and the impact of their adoption are included in Notes 2 and 5 to the Consolidated Financial Statements, respectively. In addition to other provisions, ASU 2016-01 requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes. Beginning with the current quarter ended March 31, 2018, the Company measured the fair value of certain financial instruments, included in Note 10 to the Consolidated Financial Statements, using an exit price notion. The Company also adopted ASU 2014-09, Revenue from Contracts with Customers (Topic 606), as of January 1, 2018, as required. ASU 2014-09 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. See Note 14 to the Consolidated Financial Statements for the impact of the adoption of this new standard on the Company's consolidated financial statement.

Securities

Securities	3 Months Ended
	Mar. 31, 2018
Investments, Debt and Equity Securities [Abstract]
Securities	Securities The following is a summary of securities available for sale as of March 31, 2018 and December 31, 2017 : Amortized Cost Gross Unrealized Gain Gross Unrealized Loss Estimated Fair Value (in thousands) March 31, 2018 Mortgage-backed securities (1) $ 322,186 $ 6 $ 7,223 $ 314,969 Collateralized mortgage obligations (1) 127,125 8 2,945 124,188 U.S. government agency securities 7,499 — 131 7,368 Municipal bonds-tax exempt 125,064 219 1,457 123,826 Total securities available for sale $ 581,874 $ 233 $ 11,756 $ 570,351 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 (1) Collateralized by residential mortgages and guaranteed by U.S. government sponsored entities. The amortized cost and estimated fair value of securities as of March 31, 2018 , by contractual or expected maturity, are shown below. Collateralized mortgage obligations are included in the table shown below based on their expected maturities. All other securities are included based on their contractual maturities. Available for Sale Amortized Cost Estimated Fair Value (in thousands) Within one year $ 12,847 $ 12,801 Over one year through five years 77,973 76,519 Over five years through ten years 251,941 247,151 Over ten years 239,113 233,880 Total $ 581,874 $ 570,351 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 March 31, 2018 and December 31, 2017 : Holding Period Less Than 12 Months 12 Months or More Total Gross Unrealized Loss Estimated Fair Value Number of Securities Gross Unrealized Loss Estimated Fair Value Number of Securities Gross Unrealized Loss Estimated Fair Value Number of Securities (in thousands, except number of securities) March 31, 2018 Mortgage-backed securities $ 5,777 $ 243,061 83 $ 1,446 $ 54,871 28 $ 7,223 $ 297,932 111 Collateralized mortgage obligations 1,388 65,798 18 1,557 51,314 36 2,945 117,112 54 U.S. government agency securities 36 1,464 1 95 5,905 2 131 7,369 3 Municipal bonds-tax exempt 1,331 89,320 40 126 2,632 2 1,457 91,952 42 Total $ 8,532 $ 399,643 142 $ 3,224 $ 114,722 68 $ 11,756 $ 514,365 210 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 Municipal bonds-taxable — — — — — — — — — 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 All individual securities that have been in a continuous unrealized loss position for 12 months or longer as of March 31, 2018 and December 31, 2017 included securities with issuers which have not established any cause for default on these securities. These securities have fluctuated in value since their purchase dates as market interest rates have fluctuated. 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 securities before the recovery of their amortized cost basis. 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 March 31, 2018 and December 31, 2017 were not other-than-temporarily impaired, and therefore, no impairment charges as of March 31, 2018 and December 31, 2017 were warranted. Realized gains and losses on sales of securities and proceeds from sales of securities were as follows for the periods indicated: Three Months Ended 2018 2017 (in thousands) Gross realized gains on sales of securities $ — $ 269 Gross realized losses on sales of securities (957 ) — Net realized (losses) gains on sales of securities $ (957 ) $ 269 Proceeds from sales of securities $ 21,958 $ 12,573 In January 2016, the Financial Accounting Standards Board ("FASB") issued ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities (Topic 825). This new guidance, among other provisions, amends accounting related to the classification and measurement of investments in equity securities. We adopted this guidance, as required, in the first quarter of 2018. ASU 2016-01 requires the amounts reported in accumulated other comprehensive income for equity securities that exist as of the date of adoption previously classified as available-for-sale to be reclassified to retained earnings. The Company reduced the balance of securities by $529,000 as of January 1, 2018, representing the loss related to all of our mutual fund equity securities, which resulted in a net reduction of retained earnings of $382,000 and an increase of $147,000 in net deferred tax assets based on the transition requirements of this standard. During the three months ended March 31, 2018 , we sold all of our mutual fund equity securities with gross realized losses of $957,000 . The Company recorded a $428,000 net loss in earnings resulting from the sale these securities. The remaining loss of $529,000 related to these sold securities was recorded as a transition adjustment upon adoption of ASU 2016-01 as of the beginning of the period as described in the preceding paragraph. There was a $269,000 net gain in earnings resulting from sales of securities during the three months ended March 31, 2017 , that had previously been recorded as net unrealized gains of $319,000 in comprehensive income. Securities available for sale with market values of $ 130.8 million and $ 130.1 million as of March 31, 2018 and December 31, 2017 , respectively, were pledged to secure public deposits and for other purposes as required or permitted by law.

Loans and Leases

Loans and Leases	3 Months Ended
	Mar. 31, 2018
Receivables [Abstract]
Loans and Leases	Loans and leases Loans and Leases Receivable, Net Loans and leases receivable consisted of the following as of the dates indicated: March 31, 2018 December 31, 2017 (in thousands) Real estate loans: Commercial property Retail $ 909,414 $ 915,273 Hospitality 731,531 681,325 Other (1) 1,423,903 1,417,273 Total commercial property loans 3,064,848 3,013,871 Construction 57,896 55,190 Residential property 545,053 521,853 Total real estate loans 3,667,797 3,590,914 Commercial and industrial loans: Commercial term 184,083 182,685 Commercial lines of credit 190,255 181,894 International loans 35,042 34,622 Total commercial and industrial loans 409,380 399,201 Leases receivable 321,481 297,284 Consumer loans (2) 14,899 17,059 Loans and leases receivable 4,413,557 4,304,458 Allowance for loan and lease losses (31,777 ) (31,043 ) Loans and leases receivable, net $ 4,381,780 $ 4,273,415 (1) Includes, among other types, mixed-use, apartment, office, industrial, gas stations, faith-based facilities and warehouse; all other property types represent less than one percent of total loans and leases receivable. (2) Consumer loans include home equity lines of credit of $12.7 million and $14.2 million as of March 31, 2018 and December 31, 2017 , respectively. Accrued interest on loans and leases receivable was $10.3 million and $10.2 million at March 31, 2018 and December 31, 2017 , respectively. At March 31, 2018 and December 31, 2017 , loans receivable of $1.1 billion were pledged to secure borrowing facilities from the FHLB. Loans Held for Sale The following is the activity for SBA loans held for sale for the three months ended March 31, 2018 and 2017 : SBA Loans Held for Sale Real Estate Commercial and Industrial Total (in thousands) March 31, 2018 Balance at beginning of period $ 3,746 $ 2,648 $ 6,394 Originations 10,433 8,372 18,805 Sales (12,028 ) (7,159 ) (19,187 ) Principal payoffs and amortization — (4 ) (4 ) Balance at end of period $ 2,151 $ 3,857 $ 6,008 March 31, 2017 Balance at beginning of period $ 7,410 $ 1,906 $ 9,316 Originations 12,633 6,559 19,192 Sales (12,254 ) (7,389 ) (19,643 ) Principal payoffs and amortization — (16 ) (16 ) Balance at end of period $ 7,789 $ 1,060 $ 8,849 Allowance for Loan and Lease Losses Activity in the allowance for loan and lease losses was as follows for the periods indicated: As of and for the Three Months Ended March 31, 2018 March 31, 2017 (in thousands) Allowance for loan and lease losses: Balance at beginning of period $ 31,043 $ 32,429 Charge-offs (1,632 ) (186 ) Recoveries on loans and leases previously charged off 1,717 989 Net recoveries 85 803 Loan and lease loss provision (income) 649 (80 ) Balance at end of period $ 31,777 $ 33,152 Management believes the allowance for loan and lease losses is appropriate to provide for probable losses inherent in the loan and lease 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 and composition of the loan and lease 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, Texas, Illinois, Virginia, New Jersey, New York, Colorado, Georgia and Washington State. The following table details the information on the allowance for loan and lease losses by portfolio segment as of and for the three months ended March 31, 2018 and 2017 : Real Estate Commercial and Industrial Leases Receivable Consumer Unallocated Total (In thousands) As of and for the Three Months Ended March 31, 2018 Allowance for loan and lease losses on loans and leases: Beginning balance $ 17,012 $ 7,400 6,279 $ 122 $ 230 $ 31,043 Charge-offs (989 ) (279 ) (364 ) — — (1,632 ) Recoveries on loans and leases previously charged off 885 736 95 1 — 1,717 Loan and lease loss provision (income) 732 (967 ) 1,100 2 (218 ) 649 Ending balance $ 17,640 $ 6,890 $ 7,110 $ 125 $ 12 $ 31,777 Individually evaluated for impairment $ 1,549 $ 357 $ 1,110 $ — $ — $ 3,016 Collectively evaluated for impairment $ 16,091 $ 6,533 $ 6,000 $ 125 $ 12 $ 28,761 Loans and leases receivable $ 3,667,797 $ 409,380 $ 321,481 $ 14,899 $ — $ 4,413,557 Individually evaluated for impairment $ 18,513 $ 2,843 $ 4,200 $ 894 $ — $ 26,450 Collectively evaluated for impairment $ 3,649,284 $ 406,537 $ 317,281 $ 14,005 $ — $ 4,387,107 As of and for the Three Months Ended March 31, 2017 Allowance for loan and lease losses on loans and leases: Beginning balance $ 26,134 $ 5,623 307 $ 199 $ 166 $ 32,429 Charge-offs (104 ) (40 ) (42 ) — — (186 ) Recoveries on loans and leases previously charged off 712 277 — — — 989 Loan and lease loss provision (income) (1,140 ) 95 715 (69 ) 319 (80 ) Ending balance $ 25,602 $ 5,955 $ 980 $ 130 $ 485 $ 33,152 Individually evaluated for impairment $ 3,756 $ 791 $ — $ — $ — $ 4,547 Collectively evaluated for impairment $ 21,846 $ 5,164 $ 980 $ — $ 130 $ 485 $ 28,605 Loans and leases receivable $ 3,348,875 $ 317,682 $ 259,591 $ 17,803 $ — $ 3,943,951 Individually evaluated for impairment $ 20,795 $ 3,828 $ — $ 321 $ — $ 24,944 Collectively evaluated for impairment $ 3,328,080 $ 313,854 $ 259,591 $ 17,482 $ — $ 3,919,007 Loan and Lease Quality Indicators As part of the on-going monitoring of the credit 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 loan or lease in our loan and lease portfolio. Third party loan reviews are performed throughout the year. 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 in all respects 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 incorporates all performing loans and leases with no credit weaknesses. It includes cash and stock/security secured loans or other investment grade loans. Special Mention: A special mention credit, grade 5, has potential weaknesses that deserve management’s close attention. If not corrected, these potential weaknesses may result in deterioration of the repayment prospects 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 credit, grade 6, has a well-defined weakness that jeopardizes the liquidation of the debt. A credit 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 credit, 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 credit, 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 its continuance as an active bank asset 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 are charged off in a timely manner. Under regulatory guidance, loans and leases graded special mention or worse are considered criticized loans and leases, and loans and leases graded substandard or worse are considered classified loans and leases. As of March 31, 2018 and December 31, 2017 , pass/pass-watch, special mention and classified loans and leases, disaggregated by loan class, were as follows: Pass/Pass-Watch Special Mention Classified Total (in thousands) March 31, 2018 Real estate loans: Commercial property Retail $ 903,510 $ 375 $ 5,529 $ 909,414 Hospitality 717,252 4,220 10,059 731,531 Other 1,407,438 9,040 7,425 1,423,903 Construction 57,896 — — 57,896 Residential property 544,516 301 236 545,053 Total real estate loans 3,630,612 13,936 23,249 3,667,797 Commercial and industrial loans: Commercial term 180,355 757 2,971 184,083 Commercial lines of credit 189,514 741 — 190,255 International loans 35,042 — — 35,042 Total commercial and industrial loans 404,911 1,498 2,971 409,380 Leases receivable 317,281 — 4,200 321,481 Consumer loans 13,864 202 833 14,899 Total loans and leases $ 4,366,668 $ 15,636 $ 31,253 $ 4,413,557 December 31, 2017 Real estate loans: Commercial property Retail $ 909,682 $ 454 $ 5,137 $ 915,273 Hospitality 667,254 4,976 9,095 681,325 Other 1,397,658 11,045 8,570 1,417,273 Construction 55,190 — — 55,190 Residential property 521,261 305 287 521,853 Total real estate loans 3,551,045 16,780 23,089 3,590,914 Commercial and industrial loans: Commercial term 179,835 439 2,411 182,685 Commercial lines of credit 181,462 250 182 181,894 International loans 34,622 — — 34,622 Total commercial and industrial loans 395,919 689 2,593 399,201 Leases receivable 292,832 — 4,452 297,284 Consumer loans 15,995 — 1,064 17,059 Total loans and leases $ 4,255,791 $ 17,469 $ 31,198 $ 4,304,458 The following is an aging analysis of loans and leases, 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 (in thousands) March 31, 2018 Real estate loans: Commercial property Retail $ 295 $ — $ 689 $ 984 $ 908,430 $ 909,414 Hospitality 5,585 — 819 6,404 725,127 731,531 Other 348 — 683 1,031 1,422,872 1,423,903 Construction — — — — 57,896 57,896 Residential property 1,715 — — 1,715 543,338 545,053 Total real estate loans 7,943 — 2,191 10,134 3,657,663 3,667,797 Commercial and industrial loans: Commercial term 496 406 259 1,161 182,922 184,083 Commercial lines of credit — — — — 190,255 190,255 International loans — — — — 35,042 35,042 Total commercial and industrial loans 496 406 259 1,161 408,219 409,380 Leases receivable 2,211 816 3,089 6,116 315,365 321,481 Consumer loans 6 2 — 8 14,891 14,899 Total loans and leases $ 10,656 $ 1,224 $ 5,539 $ 17,419 $ 4,396,138 $ 4,413,557 December 31, 2017 Real estate loans: Commercial property Retail $ 96 $ 15 $ 630 $ 741 $ 914,532 $ 915,273 Hospitality 3,421 168 398 3,987 677,338 681,325 Other 1,245 1,333 563 3,141 1,414,132 1,417,273 Construction — — — — 55,190 55,190 Residential property 609 — — 609 521,244 521,853 Total real estate loans 5,371 1,516 1,591 8,478 3,582,436 3,590,914 Commercial and industrial loans: Commercial term 430 567 829 1,826 180,859 182,685 Commercial lines of credit 250 — 182 432 181,462 181,894 International loans — — — — 34,622 34,622 Total commercial and industrial loans 680 567 1,011 2,258 396,943 399,201 Leases receivable 2,295 944 3,554 6,793 290,491 297,284 Consumer loans — — — — 17,059 17,059 Total loans and leases $ 8,346 $ 3,027 $ 6,156 $ 17,529 $ 4,286,929 $ 4,304,458 There was $17,000 of loans that were 90 days or more past due and accruing interest as of March 31, 2018 and no loans that were 90 days or more past due and accruing interest as of December 31, 2017 . Impaired Loans and Leases Loans and leases are considered impaired when the Bank will be unable to collect all interest and principal payments per the contractual terms of the loan and lease agreement, unless the loan is well-collateralized and in the process of collection; or they are classified as Troubled Debt Restructurings (“TDRs”) because, due to the financial difficulties of the borrowers, we have granted concessions to the borrowers we would not otherwise consider; or when current information or events make it unlikely to collect in full according to the contractual terms of the loan or lease agreements; or 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 and lease impairment in accordance with applicable GAAP. Impaired loans and leases are measured based on the present value of expected future cash flows discounted at the receivable's effective interest rate or, as a practical expedient, at the receivable's observable market price or the fair value of the collateral if the loan or lease is collateral dependent, less estimated costs to sell. If the measure of the impaired loan or lease is less than the recorded investment in the loan or lease, the deficiency is either charged off against the allowance for loan and lease losses or we establish a specific allocation in the allowance for loan and lease losses. Additionally, loans and leases that are considered impaired are specifically excluded from the quarterly migration analysis when determining the amount of the allowance for loan and lease 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 tables provide information on impaired loans and leases, disaggregated by loan class, as of the dates indicated: Recorded Unpaid With No With an Related (in thousands) March 31, 2018 Real estate loans: Commercial property Retail $ 1,394 $ 1,417 $ 1,336 $ 58 $ 5 Hospitality 7,413 8,962 3,671 3,742 1,543 Other 7,255 7,778 7,140 116 1 Residential property 2,450 2,596 2,450 — — Total real estate loans 18,512 20,753 14,597 3,916 1,549 Commercial and industrial loans 2,843 2,934 1,344 1,499 357 Leases receivable 4,200 4,324 934 3,265 1,110 Consumer loans 894 1,087 895 — — Total loans and leases $ 26,449 $ 29,098 $ 17,770 $ 8,680 $ 3,016 December 31, 2017 Real estate loans: Commercial property Retail $ 1,403 $ 1,423 $ 1,246 $ 157 $ 1 Hospitality 6,184 7,220 2,144 4,040 1,677 Other 8,513 9,330 7,569 944 394 Residential property 2,563 2,728 824 1,739 21 Total real estate loans 18,663 20,701 11,783 6,880 2,093 Commercial and industrial loans 3,039 3,081 1,068 1,971 441 Leases receivable 4,452 4,626 455 3,997 3,334 Consumer loans 1,029 1,215 919 110 10 Total loans and leases $ 27,183 $ 29,623 $ 14,225 $ 12,958 $ 5,878 Three Months Ended Average Recorded Investment Interest Income Recognized (in thousands) March 31, 2018 Real estate loans: Commercial property Retail $ 1,409 $ 22 Hospitality 8,105 141 Other 7,843 110 Residential property 2,580 30 Total real estate loans 19,937 303 Commercial and industrial loans 2,914 40 Leases receivable 4,603 10 Consumer loans 1,048 14 Total loans and leases $ 28,502 $ 367 March 31, 2017 Real estate loans: Commercial property Retail $ 1,667 $ 31 Hospitality 6,254 67 Other 10,160 183 Residential property 2,773 33 Total real estate loans 20,854 314 Commercial and industrial loans 3,892 59 Consumer loans 324 3 Total loans and leases $ 25,070 $ 376 The following is a summary of interest foregone on impaired loans and leases for the periods indicated: Three Months Ended 2018 2017 (in thousands) Interest income that would have been recognized had impaired loans and leases performed in accordance with their original terms $ 654 $ 591 Less: Interest income recognized on impaired loans and leases (367 ) (376 ) Interest foregone on impaired loans and leases $ 287 $ 215 There were no commitments to lend additional funds to borrowers whose loans are included in the table above. Nonaccrual Loans and Leases and Nonperforming Assets 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 receivable is adequately collateralized and in the process of collection. However, in certain instances, we may place a particular loan or lease receivable on nonaccrual status earlier, depending upon the individual circumstances surrounding the delinquency. When a receivable 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 nonaccrual PCI loans of $1.0 million and $0.9 million as of March 31, 2018 and December 31, 2017, respectively, disaggregated by loan class, as of the dates indicated: March 31, 2018 December 31, 2017 (in thousands) Real estate loans: Commercial property Retail $ 237 $ 224 Hospitality 6,495 5,263 Other 1,292 2,462 Residential property 451 591 Total real estate loans 8,475 8,540 Commercial and industrial loans: Commercial term 1,881 1,710 Commercial lines of credit — 182 Total commercial and industrial loans 1,881 1,892 Leases receivable 4,200 4,452 Consumer loans 789 921 Total nonaccrual loans and leases $ 15,345 $ 15,805 The following table details nonperforming assets as of the dates indicated: March 31, 2018 December 31, 2017 (in thousands) Nonaccrual loans and leases $ 15,345 $ 15,805 Loans and leases 90 days or more past due and still accruing 17 — Total nonperforming loans and leases 15,362 15,805 Other real estate owned ("OREO") 1,660 1,946 Total nonperforming assets $ 17,022 $ 17,751 OREO is included in prepaid expenses and other assets in the accompanying Consolidated Balance Sheets as of March 31, 2018 and December 31, 2017. Troubled Debt Restructurings The following table details TDRs as of March 31, 2018 and December 31, 2017 : Nonaccrual TDRs Accrual TDRs Deferral Deferral Reduction Extension Total Deferral Deferral Reduction Extension Total (in thousands) March 31, 2018 Real estate loans $ 1,479 $ 3,709 $ 15 $ — $ 5,203 $ 3,408 $ — $ 1,356 $ 1,230 5,994 Commercial and industrial loans 128 107 740 484 1,459 177 471 369 1,017 Consumer loans 789 — — — 789 — — 104 — 104 Total TDR loans $ 2,396 $ 3,816 $ 755 $ 484 $ 7,451 $ 3,408 $ 177 $ 1,931 $ 1,599 $ 7,115 December 31, 2017 Real estate loans $ 1,935 $ 3,761 $ 64 $ — $ 5,760 $ 3,409 $ — $ 1,387 $ 1,237 $ 6,033 Commercial and industrial loans 131 123 1,173 102 1,529 6 182 503 427 1,118 Consumer loans 811 — — — 811 — — 108 — 108 Total TDR loans $ 2,877 $ 3,884 $ 1,237 $ 102 $ 8,100 $ 3,415 $ 182 $ 1,998 $ 1,664 $ 7,259 As of March 31, 2018 and December 31, 2017 , total TDRs were $14.6 million and $15.4 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 three months or more. 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 March 31, 2018 and December 31, 2017 , $1.7 million and $2.2 million , respectively, of allowance relating to these loans were included in the allowance for loan and lease losses. 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.

Servicing Assets and Liabilitie

Servicing Assets and Liabilities	3 Months Ended
	Mar. 31, 2018
Transfers and Servicing [Abstract]
Servicing Assets and Liabilities	Servicing Assets and Liabilities The changes in servicing assets and liabilities for the three months ended March 31, 2018 and 2017 were as follows: 2018 2017 (in thousands) Servicing assets: Balance at beginning of period $ 10,218 $ 10,564 Addition related to sale of SBA loans 435 442 Amortization (786 ) (727 ) Reversal of allowance — 330 Balance at end of period $ 9,867 $ 10,609 Servicing liabilities: Balance at beginning of period $ 2,217 $ 3,143 Amortization (195 ) (300 ) Reversal of allowance — (67 ) Balance at end of period $ 2,022 $ 2,776 At March 31, 2018 and December 31, 2017 , we serviced loans sold to unaffiliated parties in the amounts of $471.9 million and $ 476.5 million , respectively. These represented 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 serviced were SBA loans. The Company recorded servicing fee income of $1.1 million and $1.2 million for three months ended March 31, 2018 and 2017 , respectively. Servicing fee income, net of the amortization of servicing assets and liabilities, is included in other operating income in the consolidated statements of income. Net amortization expense was $591,000 and $427,000 for the three months ended March 31, 2018 and 2017 , respectively.

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company’s income tax expense was $5.7 million and $8.6 million for the three months ended March 31, 2018 and 2017 , respectively. The effective income tax rate was 27.8 percent and 38.5 percent for the three months ended March 31, 2018 and 2017 , respectively. Management concluded that as of March 31, 2018 and December 31, 2017 , 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. A net deferred tax asset of $35.6 million and $38.3 million as of March 31, 2018 and December 31, 2017, respectively, is included in prepaid expenses and other assets in the accompanying Consolidated Balance Sheets. In February 2018, the FASB issued ASU 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income (Topic 220). This ASU eliminates the stranded tax effects in other comprehensive income resulting from the Tax Cuts and Jobs Act (the “Tax Act”). Because the amendments only relate to the reclassification of the income tax effects of the Tax Act, the underlying guidance that requires that the effect of a change in tax laws or rates be included in income from continuing operations was not affected. ASU 2018-02 allows a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the Tax Act. The Company adopted this standard as of January 1, 2018, and recorded the impact as an adjustment which increased retained earnings by $399,000 as of the date of adoption. 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 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. During the period ended December 31, 2017 the Company made a provisional estimate of the impact of the Tax Act, which was discussed in Note 11 to our Consolidated Financial Statement included in our Form 10-K filed for that period. The Company is continuing to evaluate the impact of the Tax Act on its financial statements, and has not made any adjustments to this estimate during the period ended March 31, 2018. The Company is subject to examination by various federal and state tax authorities for certain years ended December 31, 2008 through 2016. As of March 31, 2018 , the Company was subject to audit or examination by the Internal Revenue Service for the 2014 tax year and the California Franchise Tax Board for the 2008 and 2009 tax years. Management does not anticipate any material changes in our financial statements as a result of these audits or examinations.

Borrowings and Subordinated Deb

Borrowings and Subordinated Debentures	3 Months Ended
	Mar. 31, 2018
Debt Disclosure [Abstract]
Borrowings and Subordinated Debentures	Borrowings and Subordinated Debentures Borrowings The Bank had advances from the FHLB of $220.0 million and $150.0 million as of March 31, 2018 and December 31, 2017 , respectively. The FHLB advances were all overnight borrowings at March 31, 2018 and December 31, 2017 . For the three months ended March 31, 2018 and 2017 , interest expense on FHLB advances was $679,000 and $468,000 , respectively, and the weighted-average interest rate was 1.54 percent and 0.70 percent , respectively. The Bank maintains a secured credit facility with the FHLB, allowing the Bank to borrow on an overnight and term basis. The Bank had $1.1 billion of loans pledged as collateral with the FHLB, which provides $871.0 million in borrowing capacity, of which $651.0 million remained available at March 31, 2018 . The Bank also has securities with market values of $8.1 million pledged with the Federal Reserve Bank ("FRB"), which provides $8.0 million in available borrowing capacity through the Fed Discount Window. There were no outstanding borrowings with the FRB as of March 31, 2018 and December 31, 2017 . Subordinated Debentures The Company issued Fixed-to-Floating Subordinated Notes (the “Notes”) of $100 million on March 21, 2017, with a final maturity on March 30, 2027. The Notes have an initial fixed interest rate of 5.45% per annum, payable semi-monthly on March 30 and September 30 of each year. From and including March 30, 2022 and thereafter, the Notes 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 $2.3 million , which is being amortized through the Notes' maturity date. At March 31, 2018 , 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 $45,000 and $4,000 for the three months ended March 31, 2018 and 2017 , respectively. The Company assumed Junior Subordinated Deferrable Interest Debentures (“Subordinated Debentures”) as a result of the acquisition of Central Bancorp Inc. ("CBI") in 2014 with an unpaid principal balance of $26.8 million and an estimated fair value of $18.5 million . The $8.3 million discount is being amortized to interest expense through the debentures' maturity date of March 15, 2036. CBI formed a trust in 2005 and issued $26.0 million of Trust Preferred Securities (“TPS”) at 6.26 percent fixed rate for the first five years and a variable rate at the 3 month LIBOR plus 140 basis points thereafter and invested the proceeds in the Subordinated Debentures. The Company 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. At March 31, 2018 and December 31, 2017 , the balance of Subordinated Debentures included in the Company's consolidated balance sheets, net of discount of $7.6 million and $7.7 million , was $19.4 million and $19.0 million , respectively. The amortization of discount was $ 86,000 and $77,000 for the three months ended March 31, 2018 , and 2017 , respectively.

Earnings Per Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2018
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 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 unvested restricted stock under the treasury method. 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 common shares. For diluted EPS, weighted-average number of common shares 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: Three Months Ended 2018 2017 (in thousands, except for share and per share data) Basic EPS: Net income $ 14,855 $ 13,783 Less: income allocated to unvested restricted shares 89 84 Income allocated to common shares $ 14,766 $ 13,699 Weighted-average shares for basic EPS 32,145,214 32,001,766 Basic EPS $ 0.46 $ 0.43 Effect of dilutive securities - options and unvested restricted stock 155,881 189,692 Diluted EPS: Income allocated to common shares $ 14,766 $ 13,699 Weighted-average shares for diluted EPS 32,301,095 32,191,458 Diluted EPS $ 0.46 $ 0.43 There were no stock options with an anti-dilutive effect for the three months ended March 31, 2018 or 2017.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income	3 Months Ended
	Mar. 31, 2018
Equity [Abstract]
Accumulated Other Comprehensive Income	Accumulated Other Comprehensive Income Activity in accumulated other comprehensive income for the three months ended March 31, 2018 and 2017 was as follows: Unrealized Gains and Losses on Available for Sale Securities Tax Benefit (Expense) Total (in thousands) March 31, 2018 Balance at beginning of period $ (3,188 ) $ 1,319 $ (1,869 ) Other comprehensive loss before reclassification (8,864 ) 2,543 (6,321 ) Adjustment to accumulated other comprehensive income related to adoption of ASU 2016-01 and 2018-02 (see Notes 2 and 5) 529 (546 ) (17 ) Period change (8,335 ) 1,997 (6,338 ) Balance at end of period $ (11,523 ) $ 3,316 $ (8,207 ) March 31, 2017 Balance at beginning of period $ (4,089 ) $ 1,695 $ (2,394 ) Other comprehensive income before reclassification 1,620 (560 ) 1,060 Reclassification from accumulated other comprehensive income (269 ) — (269 ) Period change 1,351 (560 ) 791 Balance at end of period $ (2,738 ) $ 1,135 $ (1,603 ) For the three months ended March 31, 2018 , there was a net $17,000 adjustment related to adoption of two new accounting standards (ASU 2016-01 and ASU 2018-02) effective January 1, 2018. The $17,000 includes a $529,000 reduction of unrealized losses related to all of the Company's mutual funds equity securities upon adoption of ASU 2016-01 and a $546,000 reduction in tax benefits upon adoption of ASU 2016-01 and ASU 2018-02. For the three months ended March 31, 2017 , there was a $269,000 reclassification from accumulated other comprehensive income to gains in earnings resulting from the sale of available-for-sale securities. The $269,000 reclassification adjustment out of accumulated other comprehensive income was included in net gain on sales of securities under noninterest income. Net unrealized gains of $319,000 related to these sold securities had previously been recorded in accumulated other comprehensive income as of the beginning of the period.

Regulatory Matters

Regulatory Matters	3 Months Ended
	Mar. 31, 2018
Banking and Thrift [Abstract]
Regulatory Matters	Regulatory Matters 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 revise minimum capital requirements and adjust prompt corrective action thresholds. The rules also revise the regulatory capital elements, add a new common equity Tier I capital ratio, and increase 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 Company and the Bank's capital conservation buffer was 6.52% and 7.13% , respectively, as of March 31, 2018 , and 6.55% and 7.20% , respectively, as of December 31, 2017 . The capital ratios of Hanmi Financial and the Bank as of March 31, 2018 and December 31, 2017 were as follows: Actual Minimum Regulatory Requirement Minimum to Be Categorized as “Well Capitalized” Amount Ratio Amount Ratio Amount Ratio (dollars in thousands) March 31, 2018 Total capital (to risk-weighted assets): Hanmi Financial $ 695,483 15.43 % $ 360,582 8.00 % N/A N/A Hanmi Bank $ 681,539 15.13 % $ 360,395 8.00 % $ 450,494 10.00 % Tier 1 capital (to risk-weighted assets): Hanmi Financial $ 564,376 12.52 % $ 270,436 6.00 % N/A N/A Hanmi Bank $ 648,439 14.39 % $ 270,296 6.00 % $ 360,395 8.00 % Common equity Tier 1 capital (to risk-weighted assets): Hanmi Financial $ 544,983 12.09 % $ 202,827 4.50 % N/A N/A Hanmi Bank $ 648,439 14.39 % $ 202,722 4.50 % $ 292,821 6.50 % Tier 1 capital (to average assets): Hanmi Financial $ 564,376 10.88 % $ 207,452 4.00 % N/A N/A Hanmi Bank $ 648,439 12.51 % $ 207,361 4.00 % $ 259,201 5.00 % 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 %

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2018
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements Fair Value Measurements ASC 820, Fair Value Measurements and Disclosures , defines fair value, establishes a framework for measuring fair value including a three-level valuation hierarchy, and expands disclosures about 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, and core deposit intangible, 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 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 securities is determined based on pricing data provided by nationally recognized pricing services. 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 - Loans held for sale are all SBA loans and 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 March 31, 2018 , 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 - 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 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 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. Assets and Liabilities Measured at Fair Value on a Recurring Basis As of March 31, 2018 and December 31, 2017 , assets and liabilities measured at fair value on a recurring basis are as follows: Level 1 Level 2 Level 3 Quoted Prices in Active Markets for Identical Assets Significant Observable Inputs with No Active Market with Identical Characteristics Significant Unobservable Inputs Balance (in thousands) March 31, 2018 Assets: Securities available for sale: Mortgage-backed securities $ — $ 314,969 $ — $ 314,969 Collateralized mortgage obligations — 124,188 — 124,188 U.S. government agency securities — 7,368 — 7,368 Municipal bonds-tax exempt — 123,826 — 123,826 Total securities available for sale $ — $ 570,351 $ — $ 570,351 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 Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis As of March 31, 2018 and December 31, 2017 , assets and liabilities measured at fair value on a non-recurring basis are as follows: Level 1 Level 2 Level 3 Quoted Prices in Active Markets for Identical Assets Significant Observable Inputs With No Active Market With Identical Characteristics Significant Unobservable Inputs Loss During the Three Months Ended March 31, 2018 (in thousands) March 31, 2018 Assets: Impaired loans (1) $ — $ 4,786 $ 1,031 $ 456 OREO — 1,660 — — Loss During the Twelve Months Ended December 31, 2017 December 31, 2017 Assets: Impaired loans (2) $ — $ 6,121 $ 2,436 $ 2,730 OREO — 1,946 — — (1) Consist of real estate loans of $4.7 million and commercial and industrial loans of $1.1 million . (2) Consist of real estate loans of $6.7 million , commercial and industrial loans of $1.7 million . ASC 825, Financial Instruments , 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. During the three months ended March 31, 2018, as required, the Company adopted ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities (Topic 825). This standard, among other provisions, requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes. Other than certain financial instruments for which we have concluded that the carrying amounts approximate fair value, the fair value estimates shown below have are based on an exit price notion as of March 31, 2018, as required by ASU 2016-01. The financial instruments for which we have concluded that the carrying amounts approximate fair value include, cash and due from banks, accrued interest receivable and payable, FHLB stock, and noninterest-bearing deposits. The fair values of off-balance sheet items 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. The estimated fair values of financial instruments were as follows: March 31, 2018 Carrying Fair Value Amount Level 1 Level 2 Level 3 (in thousands) Financial assets: Cash and due from banks 151,611 151,611 — — Securities available for sale 570,351 — 570,351 — Loans and leases receivable, net of allowance for loan and lease losses 4,381,780 — — 4,392,889 Loans held for sale 6,008 — 6,461 — Accrued interest receivable 12,751 12,751 — — FHLB stock 16,385 — 16,385 — Financial liabilities: Noninterest-bearing deposits 1,352,162 — 1,352,162 — Interest-bearing deposits 3,025,939 — — 2,905,169 Borrowings and subordinated debentures 337,400 — — 337,822 Accrued interest payable 5,931 5,931 — — Off-balance sheet items: Commitments to extend credit 324,528 — — 324,528 Standby letters of credit 22,288 — — 22,288 Commercial letters of credit 11,560 — — 11,560 December 31, 2017 Carrying Fair Value Amount 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 and subordinated debentures 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

Share-Based Compensation

Share-Based Compensation	3 Months Ended
	Mar. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-Based Compensation	Share-Based Compensation Share-Based Compensation Expense For the three months ended March 31, 2018 and 2017 , share-based compensation expenses were $ 884,000 and $692,000 , respectively, and net tax benefits recognized from stock option and restricted stock awards were $ 247,000 and $276,000 , respectively. Excess tax benefits related to the Company's share-based compensation are recognized as income tax expense in the consolidated statement of income. Unrecognized Share-Based Compensation Expense As of March 31, 2018 , unrecognized share-based compensation expense was as follows: Unrecognized Average Expected (in thousands) Stock option awards $ 4 0.2 years Restricted stock awards 6,073 2.0 years Total unrecognized share-based compensation expense $ 6,077 2.2 years Stock Option Awards The table below provides stock option information for the three months ended March 31, 2018 : Number of Weighted- Weighted- Aggregate (in thousands) Options outstanding at beginning of period 364,088 $ 17.86 5.9 years $ 4,548 (1) Options exercised (25,750 ) $ 22.06 5.9 years — Options outstanding at end of period 338,338 $ 17.54 5.5 years $ 4,469 (2) Options exercisable at end of period 329,003 $ 17.37 5.4 years $ 4,625 (2) (1) Intrinsic value represents the excess of the closing stock price on the last trading day of the period, which was $30.35 as of December 31, 2017, over the exercise price, multiplied by the number of options. (2) Intrinsic value represents the excess of the closing stock price on the last trading day of the period, which was $30.75 as of March 31, 2018 , over the exercise price, multiplied by the number of options. There were 25,750 and 1,000 stock options exercised during the three months ended March 31, 2018 and 2017 , respectively. Restricted Stock Awards Restricted stock awards under the Company’s 2007 and 2013 Equity Compensation Plans typically vest over three years and are subject to forfeiture if employment terminates prior to the lapse of restrictions. 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. Forfeited shares of restricted stock become available for future grants upon forfeiture. The table below provides information for restricted stock awards for the three months ended March 31, 2018 : Three Months Ended Number of Shares Weighted- Average Grant Date Fair Value Per Share Restricted stock at beginning of period 317,783 $ 21.09 Restricted stock granted 97,724 24.08 Restricted stock vested (52,913 ) 26.86 Restricted stock forfeited (38,498 ) 9.97 Restricted stock at end of period 324,096 22.38

Off-Balance Sheet Commitments

Off-Balance Sheet Commitments	3 Months Ended
	Mar. 31, 2018
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 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: March 31, 2018 December 31, 2017 (in thousands) Commitments to extend credit $ 324,528 $ 318,634 Standby letters of credit 22,288 19,294 Commercial letters of credit 11,560 9,308 Total undisbursed loan commitments $ 358,376 $ 347,236 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 loan off-balance sheet items was as follows for the periods indicated: Three Months Ended 2018 2017 (in thousands) Balance at beginning of period $ 1,296 $ 1,184 Provision (income) 27 — Balance at end of period $ 1,323 $ 1,184

Subsequent Events

Subsequent Events	3 Months Ended
	Mar. 31, 2018
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 Quarterly Report on Form 10-Q for the period ended March 31, 2018 , or would be required to be recognized in the Consolidated Financial Statements (Unaudited) as of March 31, 2018 .

Revenue Recognition

Revenue Recognition	3 Months Ended
	Mar. 31, 2018
Revenue from Contract with Customer [Abstract]
Revenue Recognition	Revenue Recognition The Company also adopted ASU 2014-09, Revenue from Contracts with Customers (Topic 606), as of January 1, 2018. 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 deferred the original effective date for all entities by one year. Public business entities are required to apply the guidance in ASU 2015-14 to annual reporting periods beginning after December 15, 2017, including interim reporting periods within that reporting period. The standard’s core principle is that a company shall recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. In doing so, companies generally are required to use more judgment and make more estimates than under prior guidance. These may include identifying performance obligations in the contract, estimating the amount of variable consideration to include in the transaction price and allocating the transaction price to each separate performance obligation. Subsequent to the issuance of ASU 2014-09, the FASB issued targeted updates to clarify specific implementation issues including ASU No. 2016-08, Principal versus Agent Considerations (Reporting Revenue Gross versus Net) , ASU No. 2016-10, Identifying Performance Obligations and Licensing , ASU No. 2016-12, Narrow-Scope Improvements and Practical Expedients , and ASU No. 2016-20. Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers . For financial reporting purposes, the standard allows for either full retrospective adoption, meaning the standard is applied to all of the periods presented, or modified retrospective adoption, meaning the standard is applied only to the most current period presented in the financial statements with the cumulative effect of initially applying the standard recognized at the date of initial application. Since the guidance does not apply to revenue associated with financial instruments, including loans and securities that are accounted for under other GAAP, the new guidance did not have an impact on revenue most closely associated with our financial instruments, including interest income and expense. The Company completed its overall assessment of revenue streams and review of related contracts potentially affected by the ASU, including revenue streams associated with our noninterest income. Based on this assessment, the Company concluded that ASU 2014-09 did not change the method in which the Company currently recognizes revenue for these revenue streams. The Company's noninterest income primarily includes service charges on deposit accounts, trade finance and other service charges and fees, servicing income, bank-owned life insurance income and gains or losses on sale of SBA loans, PCI loans and securities. Based on our assessment of revenue streams related to the Company's noninterest income, we concluded that the Companies performance obligations for such revenue streams are typically satisfied as services are rendered. If applicable, the Company records contract liabilities, or deferred revenue, when payments from customers are received or due in advance of providing services to customers and records contract assets when services are provided to customers before payment is received or before payment is due. The Company’s noninterest revenue streams are largely based on transactional activities and since the Company generally receives payments for its services during the period or at the time services are provided, there are no contract asset or receivable balances as of March 31, 2018. Consideration is often received immediately or shortly after the Company satisfies its performance obligation and revenue is recognized. The Company also completed its evaluation of certain costs related to these revenue streams to determine whether such costs should be presented as expenses or contra-revenue (i.e., gross versus net) and concluded that our Consolidated Statements of Income do not include any revenue streams that are impacted by such gross versus net provisions of the new standard. The Company adopted ASU 2014-09 and its related amendments on its required effective date of January 1, 2018 utilizing the modified retrospective approach. Since there was no impact upon adoption of this new standard, a cumulative effect adjustment to opening retained earnings was not deemed necessary.

Organization and Basis of Pre22

Organization and Basis of Presentation (Policies)	3 Months Ended
	Mar. 31, 2018
Accounting Policies [Abstract]
Basis of Accounting	In management’s opinion, the accompanying unaudited consolidated financial statements of Hanmi Financial and its subsidiaries reflect all adjustments of a normal and recurring nature that are necessary for a fair presentation of the results for the interim period ended March 31, 2018 , but are not necessarily indicative of the results that will be reported for the entire year or any other interim period. Certain information and footnote disclosures normally included in annual financial statements prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) have been condensed or omitted. The aforementioned unaudited consolidated financial statements are in conformity with GAAP. Such interim consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q pursuant to the rules and regulations of the Securities and Exchange Commission. The interim information should be read in conjunction with our Annual Report on Form 10-K for the fiscal year ended December 31, 2017 (the “ 2017 Annual Report on Form 10-K”).
Use of Estimates	The preparation of interim consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the 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. Material estimates subject to change include, among other items, the determination of allowance for loan and lease losses and various other assets and liabilities measured at fair value.
Recent Accounting Pronouncements	Descriptions of our significant accounting policies are included in Note 1 - Summary of Significant Accounting Policies in the Notes to Consolidated Financial Statements in our 2017 Annual Report on Form 10-K. During the three months ended March 31, 2018, the Company adopted Accounting Standards Update ("ASU") 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities (Topic 825) and ASU 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income (Topic 220). Summaries of ASU 2016-01 and 2018-02 and the impact of their adoption are included in Notes 2 and 5 to the Consolidated Financial Statements, respectively. In addition to other provisions, ASU 2016-01 requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes. Beginning with the current quarter ended March 31, 2018, the Company measured the fair value of certain financial instruments, included in Note 10 to the Consolidated Financial Statements, using an exit price notion. The Company also adopted ASU 2014-09, Revenue from Contracts with Customers (Topic 606), as of January 1, 2018, as required. ASU 2014-09 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. See Note 14 to the Consolidated Financial Statements for the impact of the adoption of this new standard on the Company's consolidated financial statement.
Fair Value Assumptions of Financial Instruments	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 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 securities is determined based on pricing data provided by nationally recognized pricing services. 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 - Loans held for sale are all SBA loans and 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 March 31, 2018 , 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 - 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 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 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.
Fair Value Measurements	ASC 825, Financial Instruments , 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. During the three months ended March 31, 2018, as required, the Company adopted ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities (Topic 825). This standard, among other provisions, requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes. Other than certain financial instruments for which we have concluded that the carrying amounts approximate fair value, the fair value estimates shown below have are based on an exit price notion as of March 31, 2018, as required by ASU 2016-01. The financial instruments for which we have concluded that the carrying amounts approximate fair value include, cash and due from banks, accrued interest receivable and payable, FHLB stock, and noninterest-bearing deposits. The fair values of off-balance sheet items 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.

Securities (Tables)

Securities (Tables)	3 Months Ended
	Mar. 31, 2018
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 March 31, 2018 and December 31, 2017 : Amortized Cost Gross Unrealized Gain Gross Unrealized Loss Estimated Fair Value (in thousands) March 31, 2018 Mortgage-backed securities (1) $ 322,186 $ 6 $ 7,223 $ 314,969 Collateralized mortgage obligations (1) 127,125 8 2,945 124,188 U.S. government agency securities 7,499 — 131 7,368 Municipal bonds-tax exempt 125,064 219 1,457 123,826 Total securities available for sale $ 581,874 $ 233 $ 11,756 $ 570,351 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 (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 March 31, 2018 , by contractual or expected maturity, are shown below. Collateralized mortgage obligations are included in the table shown below based on their expected maturities. All other securities are included based on their contractual maturities. Available for Sale Amortized Cost Estimated Fair Value (in thousands) Within one year $ 12,847 $ 12,801 Over one year through five years 77,973 76,519 Over five years through ten years 251,941 247,151 Over ten years 239,113 233,880 Total $ 581,874 $ 570,351
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 March 31, 2018 and December 31, 2017 : Holding Period Less Than 12 Months 12 Months or More Total Gross Unrealized Loss Estimated Fair Value Number of Securities Gross Unrealized Loss Estimated Fair Value Number of Securities Gross Unrealized Loss Estimated Fair Value Number of Securities (in thousands, except number of securities) March 31, 2018 Mortgage-backed securities $ 5,777 $ 243,061 83 $ 1,446 $ 54,871 28 $ 7,223 $ 297,932 111 Collateralized mortgage obligations 1,388 65,798 18 1,557 51,314 36 2,945 117,112 54 U.S. government agency securities 36 1,464 1 95 5,905 2 131 7,369 3 Municipal bonds-tax exempt 1,331 89,320 40 126 2,632 2 1,457 91,952 42 Total $ 8,532 $ 399,643 142 $ 3,224 $ 114,722 68 $ 11,756 $ 514,365 210 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 Municipal bonds-taxable — — — — — — — — — 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
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: Three Months Ended 2018 2017 (in thousands) Gross realized gains on sales of securities $ — $ 269 Gross realized losses on sales of securities (957 ) — Net realized (losses) gains on sales of securities $ (957 ) $ 269 Proceeds from sales of securities $ 21,958 $ 12,573

Loans and Leases (Tables)

Loans and Leases (Tables)	3 Months Ended
	Mar. 31, 2018
Receivables [Abstract]
Loans Receivable	Loans and leases receivable consisted of the following as of the dates indicated: March 31, 2018 December 31, 2017 (in thousands) Real estate loans: Commercial property Retail $ 909,414 $ 915,273 Hospitality 731,531 681,325 Other (1) 1,423,903 1,417,273 Total commercial property loans 3,064,848 3,013,871 Construction 57,896 55,190 Residential property 545,053 521,853 Total real estate loans 3,667,797 3,590,914 Commercial and industrial loans: Commercial term 184,083 182,685 Commercial lines of credit 190,255 181,894 International loans 35,042 34,622 Total commercial and industrial loans 409,380 399,201 Leases receivable 321,481 297,284 Consumer loans (2) 14,899 17,059 Loans and leases receivable 4,413,557 4,304,458 Allowance for loan and lease losses (31,777 ) (31,043 ) Loans and leases receivable, net $ 4,381,780 $ 4,273,415 (1) Includes, among other types, mixed-use, apartment, office, industrial, gas stations, faith-based facilities and warehouse; all other property types represent less than one percent of total loans and leases receivable. (2) Consumer loans include home equity lines of credit of $12.7 million and $14.2 million as of March 31, 2018 and December 31, 2017 , respectively.
Loans Receivable to Loans Held for Sale	The following is the activity for SBA loans held for sale for the three months ended March 31, 2018 and 2017 : SBA Loans Held for Sale Real Estate Commercial and Industrial Total (in thousands) March 31, 2018 Balance at beginning of period $ 3,746 $ 2,648 $ 6,394 Originations 10,433 8,372 18,805 Sales (12,028 ) (7,159 ) (19,187 ) Principal payoffs and amortization — (4 ) (4 ) Balance at end of period $ 2,151 $ 3,857 $ 6,008 March 31, 2017 Balance at beginning of period $ 7,410 $ 1,906 $ 9,316 Originations 12,633 6,559 19,192 Sales (12,254 ) (7,389 ) (19,643 ) Principal payoffs and amortization — (16 ) (16 ) Balance at end of period $ 7,789 $ 1,060 $ 8,849
Allowance for Non-PCI Losses and Allowance for Off-Balance Sheet Items	Activity in the allowance for loan and lease losses was as follows for the periods indicated: As of and for the Three Months Ended March 31, 2018 March 31, 2017 (in thousands) Allowance for loan and lease losses: Balance at beginning of period $ 31,043 $ 32,429 Charge-offs (1,632 ) (186 ) Recoveries on loans and leases previously charged off 1,717 989 Net recoveries 85 803 Loan and lease loss provision (income) 649 (80 ) Balance at end of period $ 31,777 $ 33,152 Activity in the allowance for loan off-balance sheet items was as follows for the periods indicated: Three Months Ended 2018 2017 (in thousands) Balance at beginning of period $ 1,296 $ 1,184 Provision (income) 27 — Balance at end of period $ 1,323 $ 1,184
Allowance for Loan Losses by Portfolio Segment	The following table details the information on the allowance for loan and lease losses by portfolio segment as of and for the three months ended March 31, 2018 and 2017 : Real Estate Commercial and Industrial Leases Receivable Consumer Unallocated Total (In thousands) As of and for the Three Months Ended March 31, 2018 Allowance for loan and lease losses on loans and leases: Beginning balance $ 17,012 $ 7,400 6,279 $ 122 $ 230 $ 31,043 Charge-offs (989 ) (279 ) (364 ) — — (1,632 ) Recoveries on loans and leases previously charged off 885 736 95 1 — 1,717 Loan and lease loss provision (income) 732 (967 ) 1,100 2 (218 ) 649 Ending balance $ 17,640 $ 6,890 $ 7,110 $ 125 $ 12 $ 31,777 Individually evaluated for impairment $ 1,549 $ 357 $ 1,110 $ — $ — $ 3,016 Collectively evaluated for impairment $ 16,091 $ 6,533 $ 6,000 $ 125 $ 12 $ 28,761 Loans and leases receivable $ 3,667,797 $ 409,380 $ 321,481 $ 14,899 $ — $ 4,413,557 Individually evaluated for impairment $ 18,513 $ 2,843 $ 4,200 $ 894 $ — $ 26,450 Collectively evaluated for impairment $ 3,649,284 $ 406,537 $ 317,281 $ 14,005 $ — $ 4,387,107 As of and for the Three Months Ended March 31, 2017 Allowance for loan and lease losses on loans and leases: Beginning balance $ 26,134 $ 5,623 307 $ 199 $ 166 $ 32,429 Charge-offs (104 ) (40 ) (42 ) — — (186 ) Recoveries on loans and leases previously charged off 712 277 — — — 989 Loan and lease loss provision (income) (1,140 ) 95 715 (69 ) 319 (80 ) Ending balance $ 25,602 $ 5,955 $ 980 $ 130 $ 485 $ 33,152 Individually evaluated for impairment $ 3,756 $ 791 $ — $ — $ — $ 4,547 Collectively evaluated for impairment $ 21,846 $ 5,164 $ 980 $ — $ 130 $ 485 $ 28,605 Loans and leases receivable $ 3,348,875 $ 317,682 $ 259,591 $ 17,803 $ — $ 3,943,951 Individually evaluated for impairment $ 20,795 $ 3,828 $ — $ 321 $ — $ 24,944 Collectively evaluated for impairment $ 3,328,080 $ 313,854 $ 259,591 $ 17,482 $ — $ 3,919,007
Credit Quality of Loan Portfolio	As of March 31, 2018 and December 31, 2017 , pass/pass-watch, special mention and classified loans and leases, disaggregated by loan class, were as follows: Pass/Pass-Watch Special Mention Classified Total (in thousands) March 31, 2018 Real estate loans: Commercial property Retail $ 903,510 $ 375 $ 5,529 $ 909,414 Hospitality 717,252 4,220 10,059 731,531 Other 1,407,438 9,040 7,425 1,423,903 Construction 57,896 — — 57,896 Residential property 544,516 301 236 545,053 Total real estate loans 3,630,612 13,936 23,249 3,667,797 Commercial and industrial loans: Commercial term 180,355 757 2,971 184,083 Commercial lines of credit 189,514 741 — 190,255 International loans 35,042 — — 35,042 Total commercial and industrial loans 404,911 1,498 2,971 409,380 Leases receivable 317,281 — 4,200 321,481 Consumer loans 13,864 202 833 14,899 Total loans and leases $ 4,366,668 $ 15,636 $ 31,253 $ 4,413,557 December 31, 2017 Real estate loans: Commercial property Retail $ 909,682 $ 454 $ 5,137 $ 915,273 Hospitality 667,254 4,976 9,095 681,325 Other 1,397,658 11,045 8,570 1,417,273 Construction 55,190 — — 55,190 Residential property 521,261 305 287 521,853 Total real estate loans 3,551,045 16,780 23,089 3,590,914 Commercial and industrial loans: Commercial term 179,835 439 2,411 182,685 Commercial lines of credit 181,462 250 182 181,894 International loans 34,622 — — 34,622 Total commercial and industrial loans 395,919 689 2,593 399,201 Leases receivable 292,832 — 4,452 297,284 Consumer loans 15,995 — 1,064 17,059 Total loans and leases $ 4,255,791 $ 17,469 $ 31,198 $ 4,304,458
Analysis of Past Due Loans, Disaggregated by Loan Class	The following is an aging analysis of loans and leases, 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 (in thousands) March 31, 2018 Real estate loans: Commercial property Retail $ 295 $ — $ 689 $ 984 $ 908,430 $ 909,414 Hospitality 5,585 — 819 6,404 725,127 731,531 Other 348 — 683 1,031 1,422,872 1,423,903 Construction — — — — 57,896 57,896 Residential property 1,715 — — 1,715 543,338 545,053 Total real estate loans 7,943 — 2,191 10,134 3,657,663 3,667,797 Commercial and industrial loans: Commercial term 496 406 259 1,161 182,922 184,083 Commercial lines of credit — — — — 190,255 190,255 International loans — — — — 35,042 35,042 Total commercial and industrial loans 496 406 259 1,161 408,219 409,380 Leases receivable 2,211 816 3,089 6,116 315,365 321,481 Consumer loans 6 2 — 8 14,891 14,899 Total loans and leases $ 10,656 $ 1,224 $ 5,539 $ 17,419 $ 4,396,138 $ 4,413,557 December 31, 2017 Real estate loans: Commercial property Retail $ 96 $ 15 $ 630 $ 741 $ 914,532 $ 915,273 Hospitality 3,421 168 398 3,987 677,338 681,325 Other 1,245 1,333 563 3,141 1,414,132 1,417,273 Construction — — — — 55,190 55,190 Residential property 609 — — 609 521,244 521,853 Total real estate loans 5,371 1,516 1,591 8,478 3,582,436 3,590,914 Commercial and industrial loans: Commercial term 430 567 829 1,826 180,859 182,685 Commercial lines of credit 250 — 182 432 181,462 181,894 International loans — — — — 34,622 34,622 Total commercial and industrial loans 680 567 1,011 2,258 396,943 399,201 Leases receivable 2,295 944 3,554 6,793 290,491 297,284 Consumer loans — — — — 17,059 17,059 Total loans and leases $ 8,346 $ 3,027 $ 6,156 $ 17,529 $ 4,286,929 $ 4,304,458
Information on Impaired Loans, Disaggregated by Loan Class	The following tables provide information on impaired loans and leases, disaggregated by loan class, as of the dates indicated: Recorded Unpaid With No With an Related (in thousands) March 31, 2018 Real estate loans: Commercial property Retail $ 1,394 $ 1,417 $ 1,336 $ 58 $ 5 Hospitality 7,413 8,962 3,671 3,742 1,543 Other 7,255 7,778 7,140 116 1 Residential property 2,450 2,596 2,450 — — Total real estate loans 18,512 20,753 14,597 3,916 1,549 Commercial and industrial loans 2,843 2,934 1,344 1,499 357 Leases receivable 4,200 4,324 934 3,265 1,110 Consumer loans 894 1,087 895 — — Total loans and leases $ 26,449 $ 29,098 $ 17,770 $ 8,680 $ 3,016 December 31, 2017 Real estate loans: Commercial property Retail $ 1,403 $ 1,423 $ 1,246 $ 157 $ 1 Hospitality 6,184 7,220 2,144 4,040 1,677 Other 8,513 9,330 7,569 944 394 Residential property 2,563 2,728 824 1,739 21 Total real estate loans 18,663 20,701 11,783 6,880 2,093 Commercial and industrial loans 3,039 3,081 1,068 1,971 441 Leases receivable 4,452 4,626 455 3,997 3,334 Consumer loans 1,029 1,215 919 110 10 Total loans and leases $ 27,183 $ 29,623 $ 14,225 $ 12,958 $ 5,878 Three Months Ended Average Recorded Investment Interest Income Recognized (in thousands) March 31, 2018 Real estate loans: Commercial property Retail $ 1,409 $ 22 Hospitality 8,105 141 Other 7,843 110 Residential property 2,580 30 Total real estate loans 19,937 303 Commercial and industrial loans 2,914 40 Leases receivable 4,603 10 Consumer loans 1,048 14 Total loans and leases $ 28,502 $ 367 March 31, 2017 Real estate loans: Commercial property Retail $ 1,667 $ 31 Hospitality 6,254 67 Other 10,160 183 Residential property 2,773 33 Total real estate loans 20,854 314 Commercial and industrial loans 3,892 59 Consumer loans 324 3 Total loans and leases $ 25,070 $ 376
Summary of Interest Foregone on Impaired Loans	The following is a summary of interest foregone on impaired loans and leases for the periods indicated: Three Months Ended 2018 2017 (in thousands) Interest income that would have been recognized had impaired loans and leases performed in accordance with their original terms $ 654 $ 591 Less: Interest income recognized on impaired loans and leases (367 ) (376 ) Interest foregone on impaired loans and leases $ 287 $ 215
Non-Accrual Loans, Disaggregated by Loan Class	The following table details nonaccrual loans and leases, excluding nonaccrual PCI loans of $1.0 million and $0.9 million as of March 31, 2018 and December 31, 2017, respectively, disaggregated by loan class, as of the dates indicated: March 31, 2018 December 31, 2017 (in thousands) Real estate loans: Commercial property Retail $ 237 $ 224 Hospitality 6,495 5,263 Other 1,292 2,462 Residential property 451 591 Total real estate loans 8,475 8,540 Commercial and industrial loans: Commercial term 1,881 1,710 Commercial lines of credit — 182 Total commercial and industrial loans 1,881 1,892 Leases receivable 4,200 4,452 Consumer loans 789 921 Total nonaccrual loans and leases $ 15,345 $ 15,805
Non-Performing Assets	The following table details nonperforming assets as of the dates indicated: March 31, 2018 December 31, 2017 (in thousands) Nonaccrual loans and leases $ 15,345 $ 15,805 Loans and leases 90 days or more past due and still accruing 17 — Total nonperforming loans and leases 15,362 15,805 Other real estate owned ("OREO") 1,660 1,946 Total nonperforming assets $ 17,022 $ 17,751
Troubled Debt Restructurings, Disaggregated by Type of Concession and by Loan Type	The following table details TDRs as of March 31, 2018 and December 31, 2017 : Nonaccrual TDRs Accrual TDRs Deferral Deferral Reduction Extension Total Deferral Deferral Reduction Extension Total (in thousands) March 31, 2018 Real estate loans $ 1,479 $ 3,709 $ 15 $ — $ 5,203 $ 3,408 $ — $ 1,356 $ 1,230 5,994 Commercial and industrial loans 128 107 740 484 1,459 177 471 369 1,017 Consumer loans 789 — — — 789 — — 104 — 104 Total TDR loans $ 2,396 $ 3,816 $ 755 $ 484 $ 7,451 $ 3,408 $ 177 $ 1,931 $ 1,599 $ 7,115 December 31, 2017 Real estate loans $ 1,935 $ 3,761 $ 64 $ — $ 5,760 $ 3,409 $ — $ 1,387 $ 1,237 $ 6,033 Commercial and industrial loans 131 123 1,173 102 1,529 6 182 503 427 1,118 Consumer loans 811 — — — 811 — — 108 — 108 Total TDR loans $ 2,877 $ 3,884 $ 1,237 $ 102 $ 8,100 $ 3,415 $ 182 $ 1,998 $ 1,664 $ 7,259

Servicing Assets and Liabilit25

Servicing Assets and Liabilities (Tables)	3 Months Ended
	Mar. 31, 2018
Transfers and Servicing [Abstract]
Changes in Servicing Assets	The changes in servicing assets and liabilities for the three months ended March 31, 2018 and 2017 were as follows: 2018 2017 (in thousands) Servicing assets: Balance at beginning of period $ 10,218 $ 10,564 Addition related to sale of SBA loans 435 442 Amortization (786 ) (727 ) Reversal of allowance — 330 Balance at end of period $ 9,867 $ 10,609 Servicing liabilities: Balance at beginning of period $ 2,217 $ 3,143 Amortization (195 ) (300 ) Reversal of allowance — (67 ) Balance at end of period $ 2,022 $ 2,776

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2018
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The following table is a reconciliation of the components used to derive basic and diluted EPS for the periods indicated: Three Months Ended 2018 2017 (in thousands, except for share and per share data) Basic EPS: Net income $ 14,855 $ 13,783 Less: income allocated to unvested restricted shares 89 84 Income allocated to common shares $ 14,766 $ 13,699 Weighted-average shares for basic EPS 32,145,214 32,001,766 Basic EPS $ 0.46 $ 0.43 Effect of dilutive securities - options and unvested restricted stock 155,881 189,692 Diluted EPS: Income allocated to common shares $ 14,766 $ 13,699 Weighted-average shares for diluted EPS 32,301,095 32,191,458 Diluted EPS $ 0.46 $ 0.43

Accumulated Other Comprehensi27

Accumulated Other Comprehensive Income (Tables)	3 Months Ended
	Mar. 31, 2018
Equity [Abstract]
Activity in Accumulated Other Comprehensive Income	Activity in accumulated other comprehensive income for the three months ended March 31, 2018 and 2017 was as follows: Unrealized Gains and Losses on Available for Sale Securities Tax Benefit (Expense) Total (in thousands) March 31, 2018 Balance at beginning of period $ (3,188 ) $ 1,319 $ (1,869 ) Other comprehensive loss before reclassification (8,864 ) 2,543 (6,321 ) Adjustment to accumulated other comprehensive income related to adoption of ASU 2016-01 and 2018-02 (see Notes 2 and 5) 529 (546 ) (17 ) Period change (8,335 ) 1,997 (6,338 ) Balance at end of period $ (11,523 ) $ 3,316 $ (8,207 ) March 31, 2017 Balance at beginning of period $ (4,089 ) $ 1,695 $ (2,394 ) Other comprehensive income before reclassification 1,620 (560 ) 1,060 Reclassification from accumulated other comprehensive income (269 ) — (269 ) Period change 1,351 (560 ) 791 Balance at end of period $ (2,738 ) $ 1,135 $ (1,603 )

Regulatory Matters (Tables)

Regulatory Matters (Tables)	3 Months Ended
	Mar. 31, 2018
Banking and Thrift [Abstract]
Capital Ratios of Hanmi Financial and Bank	The capital ratios of Hanmi Financial and the Bank as of March 31, 2018 and December 31, 2017 were as follows: Actual Minimum Regulatory Requirement Minimum to Be Categorized as “Well Capitalized” Amount Ratio Amount Ratio Amount Ratio (dollars in thousands) March 31, 2018 Total capital (to risk-weighted assets): Hanmi Financial $ 695,483 15.43 % $ 360,582 8.00 % N/A N/A Hanmi Bank $ 681,539 15.13 % $ 360,395 8.00 % $ 450,494 10.00 % Tier 1 capital (to risk-weighted assets): Hanmi Financial $ 564,376 12.52 % $ 270,436 6.00 % N/A N/A Hanmi Bank $ 648,439 14.39 % $ 270,296 6.00 % $ 360,395 8.00 % Common equity Tier 1 capital (to risk-weighted assets): Hanmi Financial $ 544,983 12.09 % $ 202,827 4.50 % N/A N/A Hanmi Bank $ 648,439 14.39 % $ 202,722 4.50 % $ 292,821 6.50 % Tier 1 capital (to average assets): Hanmi Financial $ 564,376 10.88 % $ 207,452 4.00 % N/A N/A Hanmi Bank $ 648,439 12.51 % $ 207,361 4.00 % $ 259,201 5.00 % 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 %

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2018
Fair Value Disclosures [Abstract]
Assets and Liabilities Measured at Fair Value on Recurring Basis	As of March 31, 2018 and December 31, 2017 , assets and liabilities measured at fair value on a recurring basis are as follows: Level 1 Level 2 Level 3 Quoted Prices in Active Markets for Identical Assets Significant Observable Inputs with No Active Market with Identical Characteristics Significant Unobservable Inputs Balance (in thousands) March 31, 2018 Assets: Securities available for sale: Mortgage-backed securities $ — $ 314,969 $ — $ 314,969 Collateralized mortgage obligations — 124,188 — 124,188 U.S. government agency securities — 7,368 — 7,368 Municipal bonds-tax exempt — 123,826 — 123,826 Total securities available for sale $ — $ 570,351 $ — $ 570,351 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
Assets and Liabilities Measured at Fair Value on Non-Recurring Basis	As of March 31, 2018 and December 31, 2017 , assets and liabilities measured at fair value on a non-recurring basis are as follows: Level 1 Level 2 Level 3 Quoted Prices in Active Markets for Identical Assets Significant Observable Inputs With No Active Market With Identical Characteristics Significant Unobservable Inputs Loss During the Three Months Ended March 31, 2018 (in thousands) March 31, 2018 Assets: Impaired loans (1) $ — $ 4,786 $ 1,031 $ 456 OREO — 1,660 — — Loss During the Twelve Months Ended December 31, 2017 December 31, 2017 Assets: Impaired loans (2) $ — $ 6,121 $ 2,436 $ 2,730 OREO — 1,946 — — (1) Consist of real estate loans of $4.7 million and commercial and industrial loans of $1.1 million . (2) Consist of real estate loans of $6.7 million , commercial and industrial loans of $1.7 million .
Estimated Fair Values of Financial Instruments	estimated fair values of financial instruments were as follows: March 31, 2018 Carrying Fair Value Amount Level 1 Level 2 Level 3 (in thousands) Financial assets: Cash and due from banks 151,611 151,611 — — Securities available for sale 570,351 — 570,351 — Loans and leases receivable, net of allowance for loan and lease losses 4,381,780 — — 4,392,889 Loans held for sale 6,008 — 6,461 — Accrued interest receivable 12,751 12,751 — — FHLB stock 16,385 — 16,385 — Financial liabilities: Noninterest-bearing deposits 1,352,162 — 1,352,162 — Interest-bearing deposits 3,025,939 — — 2,905,169 Borrowings and subordinated debentures 337,400 — — 337,822 Accrued interest payable 5,931 5,931 — — Off-balance sheet items: Commitments to extend credit 324,528 — — 324,528 Standby letters of credit 22,288 — — 22,288 Commercial letters of credit 11,560 — — 11,560 December 31, 2017 Carrying Fair Value Amount 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 and subordinated debentures 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

Share-Based Compensation (Table

Share-Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Unrecognized Share-Based Compensation Expense	As of March 31, 2018 , unrecognized share-based compensation expense was as follows: Unrecognized Average Expected (in thousands) Stock option awards $ 4 0.2 years Restricted stock awards 6,073 2.0 years Total unrecognized share-based compensation expense $ 6,077 2.2 years
Summary of Stock Options Outstanding under Plans	The table below provides stock option information for the three months ended March 31, 2018 : Number of Weighted- Weighted- Aggregate (in thousands) Options outstanding at beginning of period 364,088 $ 17.86 5.9 years $ 4,548 (1) Options exercised (25,750 ) $ 22.06 5.9 years — Options outstanding at end of period 338,338 $ 17.54 5.5 years $ 4,469 (2) Options exercisable at end of period 329,003 $ 17.37 5.4 years $ 4,625 (2) (1) Intrinsic value represents the excess of the closing stock price on the last trading day of the period, which was $30.35 as of December 31, 2017, over the exercise price, multiplied by the number of options. (2) Intrinsic value represents the excess of the closing stock price on the last trading day of the period, which was $30.75 as of March 31, 2018 , over the exercise price, multiplied by the number of options.
Schedule of Restricted Stock Awards	The table below provides information for restricted stock awards for the three months ended March 31, 2018 : Three Months Ended Number of Shares Weighted- Average Grant Date Fair Value Per Share Restricted stock at beginning of period 317,783 $ 21.09 Restricted stock granted 97,724 24.08 Restricted stock vested (52,913 ) 26.86 Restricted stock forfeited (38,498 ) 9.97 Restricted stock at end of period 324,096 22.38

Off-Balance Sheet Commitments (

Off-Balance Sheet Commitments (Tables)	3 Months Ended
	Mar. 31, 2018
Risks and Uncertainties [Abstract]
Distribution of Undisbursed Loan Commitments	The following table shows the distribution of undisbursed loan commitments as of the dates indicated: March 31, 2018 December 31, 2017 (in thousands) Commitments to extend credit $ 324,528 $ 318,634 Standby letters of credit 22,288 19,294 Commercial letters of credit 11,560 9,308 Total undisbursed loan commitments $ 358,376 $ 347,236
Allowance For Loan Losses And Allowance For Off Balance Sheet Items	Activity in the allowance for loan and lease losses was as follows for the periods indicated: As of and for the Three Months Ended March 31, 2018 March 31, 2017 (in thousands) Allowance for loan and lease losses: Balance at beginning of period $ 31,043 $ 32,429 Charge-offs (1,632 ) (186 ) Recoveries on loans and leases previously charged off 1,717 989 Net recoveries 85 803 Loan and lease loss provision (income) 649 (80 ) Balance at end of period $ 31,777 $ 33,152 Activity in the allowance for loan off-balance sheet items was as follows for the periods indicated: Three Months Ended 2018 2017 (in thousands) Balance at beginning of period $ 1,296 $ 1,184 Provision (income) 27 — Balance at end of period $ 1,323 $ 1,184

Securities - Summary of Investm

Securities - Summary of Investment Securities Available for Sale (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 581,874	$ 581,992
Gross Unrealized Gain	233	2,096
Gross Unrealized Loss	11,756	5,284
Estimated Fair Value	570,351	578,804
Mortgage-backed securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	322,186
Gross Unrealized Gain	6
Gross Unrealized Loss	7,223
Estimated Fair Value	314,969
Collateralized mortgage obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	127,125
Gross Unrealized Gain	8
Gross Unrealized Loss	2,945
Estimated Fair Value	124,188
Mortgage-backed securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		306,166
Gross Unrealized Gain		145
Gross Unrealized Loss		2,702
Estimated Fair Value		303,609
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	131	85
Estimated Fair Value	7,368	7,414
Municipal bonds-tax exempt [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	125,064	125,601
Gross Unrealized Gain	219	1,943
Gross Unrealized Loss	1,457	69
Estimated Fair Value	$ 123,826	127,475
U.S treasury securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		152
Gross Unrealized Gain		0
Gross Unrealized Loss		0
Estimated Fair Value		152
Mutual funds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		22,916
Gross Unrealized Gain		0
Gross Unrealized Loss		530
Estimated Fair Value		22,386
Collateralized mortgage obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		119,658
Gross Unrealized Gain		8
Gross Unrealized Loss		1,898
Estimated Fair Value		$ 117,768

Securities - Schedule of Amorti

Securities - Schedule of Amortized Cost and Estimated Fair Value of Investment Securities by Contractual Maturity (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Available-for-Sale Within one year, Amortized Cost	$ 12,847
Available-for-Sale Over one year through five years, Amortized Cost	77,973
Available-for-Sale Over five years through ten years, Amortized Cost	251,941
Available-for-Sale Over ten years, Amortized Cost	239,113
Amortized Cost	581,874	$ 581,992
Available-for-Sale Within one year, Estimated Fair Value	12,801
Available-for-Sale Over one year through five years, Estimated Fair Value	76,519
Available-for-Sale Over five years through ten years, Estimated Fair Value	247,151
Available-for-Sale Over ten years, Estimated Fair Value	233,880
Securities available for sale	$ 570,351	$ 578,804

Securities - Available for Sale

Securities - Available for Sale Securities, Continuous Unrealized Loss Position, Fair value (Detail) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2018USD ($)Security	Dec. 31, 2017USD ($)Security
Summary of Investment Holdings [Line Items]
Available-for-Sale Within One Year, Gross Unrealized Loss	$ 8,532	$ 2,691
Available-for-Sale Within One Year, Estimated Fair Value	$ 399,643	$ 276,372
Available-for-Sale Within One Year, Number of Securities | Security	142	93
Available-for-Sale More than One Year, Gross Unrealized Loss	$ 3,224	$ 2,593
Available-for-Sale More than One Year, Estimated Fair Value	$ 114,722	$ 138,033
Available-for-Sale More than One Year, Number of Securities | Security	68	67
Available-for-Sale, Gross Unrealized Loss	$ 11,756	$ 5,284
Available-for-Sale, Estimated Fair Value	$ 514,365	$ 414,405
Available-for-Sale, Number of Securities | Security	210	160
Mortgage-backed securities [Member]
Summary of Investment Holdings [Line Items]
Available-for-Sale Within One Year, Gross Unrealized Loss	$ 5,777	$ 1,855
Available-for-Sale Within One Year, Estimated Fair Value	$ 243,061	$ 197,621
Available-for-Sale Within One Year, Number of Securities | Security	83	66
Available-for-Sale More than One Year, Gross Unrealized Loss	$ 1,446	$ 847
Available-for-Sale More than One Year, Estimated Fair Value	$ 54,871	$ 56,998
Available-for-Sale More than One Year, Number of Securities | Security	28	25
Available-for-Sale, Gross Unrealized Loss	$ 7,223	$ 2,702
Available-for-Sale, Estimated Fair Value	$ 297,932	$ 254,619
Available-for-Sale, Number of Securities | Security	111	91
Collateralized mortgage obligations [Member]
Summary of Investment Holdings [Line Items]
Available-for-Sale Within One Year, Gross Unrealized Loss	$ 1,388	$ 773
Available-for-Sale Within One Year, Estimated Fair Value	$ 65,798	$ 65,726
Available-for-Sale Within One Year, Number of Securities | Security	18	20
Available-for-Sale More than One Year, Gross Unrealized Loss	$ 1,557	$ 1,125
Available-for-Sale More than One Year, Estimated Fair Value	$ 51,314	$ 49,986
Available-for-Sale More than One Year, Number of Securities | Security	36	32
Available-for-Sale, Gross Unrealized Loss	$ 2,945	$ 1,898
Available-for-Sale, Estimated Fair Value	$ 117,112	$ 115,712
Available-for-Sale, Number of Securities | Security	54	52
U.S. government agency securities [Member]
Summary of Investment Holdings [Line Items]
Available-for-Sale Within One Year, Gross Unrealized Loss	$ 36	$ 15
Available-for-Sale Within One Year, Estimated Fair Value	$ 1,464	$ 1,484
Available-for-Sale Within One Year, Number of Securities | Security	1	1
Available-for-Sale More than One Year, Gross Unrealized Loss	$ 95	$ 70
Available-for-Sale More than One Year, Estimated Fair Value	$ 5,905	$ 5,930
Available-for-Sale More than One Year, Number of Securities | Security	2	2
Available-for-Sale, Gross Unrealized Loss	$ 131	$ 85
Available-for-Sale, Estimated Fair Value	$ 7,369	$ 7,414
Available-for-Sale, Number of Securities | Security	3	3
Municipal bonds-tax exempt [Member]
Summary of Investment Holdings [Line Items]
Available-for-Sale Within One Year, Gross Unrealized Loss	$ 1,331	$ 48
Available-for-Sale Within One Year, Estimated Fair Value	$ 89,320	$ 11,541
Available-for-Sale Within One Year, Number of Securities | Security	40	6
Available-for-Sale More than One Year, Gross Unrealized Loss	$ 126	$ 21
Available-for-Sale More than One Year, Estimated Fair Value	$ 2,632	$ 2,737
Available-for-Sale More than One Year, Number of Securities | Security	2	2
Available-for-Sale, Gross Unrealized Loss	$ 1,457	$ 69
Available-for-Sale, Estimated Fair Value	$ 91,952	$ 14,278
Available-for-Sale, Number of Securities | Security	42	8
Municipal bonds-taxable [Member]
Summary of Investment Holdings [Line Items]
Available-for-Sale Within One Year, Gross Unrealized Loss		$ 0
Available-for-Sale Within One Year, Estimated Fair Value		$ 0
Available-for-Sale Within One Year, Number of Securities | Security		0
Available-for-Sale More than One Year, Gross Unrealized Loss		$ 0
Available-for-Sale More than One Year, Estimated Fair Value		$ 0
Available-for-Sale More than One Year, Number of Securities | Security		0
Available-for-Sale, Gross Unrealized Loss		$ 0
Available-for-Sale, Estimated Fair Value		$ 0
Available-for-Sale, Number of Securities | Security		0
Mutual funds [Member]
Summary of Investment Holdings [Line Items]
Available-for-Sale Within One Year, Gross Unrealized Loss		$ 0
Available-for-Sale Within One Year, Estimated Fair Value		$ 0
Available-for-Sale Within One Year, Number of Securities | Security		0
Available-for-Sale More than One Year, Gross Unrealized Loss		$ 530
Available-for-Sale More than One Year, Estimated Fair Value		$ 22,382
Available-for-Sale More than One Year, Number of Securities | Security		6
Available-for-Sale, Gross Unrealized Loss		$ 530
Available-for-Sale, Estimated Fair Value		$ 22,382
Available-for-Sale, Number of Securities | Security		6

Securities - Additional Informa

Securities - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Jan. 01, 2018	Dec. 31, 2017
Investment Securities [Line Items]
Securities available for sale	$ 570,351,000			$ 578,804,000
Retained earnings	(77,691,000)			(70,575,000)
Net deferred tax asset	35,600,000			38,300,000
Impairment charges on securities in continuous unrealized loss position for 12 months or longer	0			0
Net realized gains (losses) on sales of securities	957,000	$ (269,000)
Net gain (loss) in earnings resulting from sale of securities	(428,000)	269,000
Net unrealized gains (losses) recorded in comprehensive income	(529,000)	$ 319,000
Securities Pledged as Collateral [Member]
Investment Securities [Line Items]
Securities available for sale	$ 130,800,000			$ 130,100,000
ASU 2016-01 [Member]
Investment Securities [Line Items]
Securities available for sale			$ (529,000)
Retained earnings			382,000
Net deferred tax asset			$ 147,000

Securities - Realized Gains and

Securities - Realized Gains and Losses on Sales of Investment Securities (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Gross realized gains on sales of securities	$ 0	$ 269
Gross realized losses on sales of securities	(957)	0
Net realized (losses) gains on sales of securities	(957)	269
Proceeds from sales of securities	$ 21,958	$ 12,573

Loans and Leases - Loans Receiv

Loans and Leases - Loans Receivable (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans and leases receivable	$ 4,413,557	$ 4,304,458
Allowance for loan and lease losses	(31,777)	(31,043)
Loans and leases receivable, net	4,381,780	4,273,415
Real estate loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans and leases receivable	3,667,797	3,590,914
Real estate loans [Member] | Commercial property loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans and leases receivable	3,064,848	3,013,871
Real estate loans [Member] | Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans and leases receivable	909,414	915,273
Real estate loans [Member] | Hospitality [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans and leases receivable	731,531	681,325
Real estate loans [Member] | Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans and leases receivable	1,423,903	1,417,273
Real estate loans [Member] | Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans and leases receivable	57,896	55,190
Real estate loans [Member] | Residential property [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans and leases receivable	545,053	521,853
Commercial and industrial loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans and leases receivable	409,380	399,201
Commercial and industrial loans [Member] | Commercial term [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans and leases receivable	184,083	182,685
Commercial and industrial loans [Member] | Commercial lines of credit [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans and leases receivable	190,255	181,894
Commercial and industrial loans [Member] | International loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans and leases receivable	35,042	34,622
Leases Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans and leases receivable	321,481	297,284
Consumer loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans and leases receivable	14,899	17,059
Non-PCI Loans and Leases [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans and leases receivable	4,413,557	4,304,458	$ 3,943,951
Allowance for loan and lease losses	(31,777)	(31,043)	$ (33,152)	$ (32,429)
Non-PCI Loans and Leases [Member] | Real estate loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans and leases receivable	3,667,797	3,590,914
Non-PCI Loans and Leases [Member] | Real estate loans [Member] | Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans and leases receivable	909,414	915,273
Non-PCI Loans and Leases [Member] | Real estate loans [Member] | Hospitality [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans and leases receivable	731,531	681,325
Non-PCI Loans and Leases [Member] | Real estate loans [Member] | Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans and leases receivable	57,896	55,190
Non-PCI Loans and Leases [Member] | Real estate loans [Member] | Residential property [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans and leases receivable	545,053	521,853
Non-PCI Loans and Leases [Member] | Commercial and industrial loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans and leases receivable	409,380	399,201
Non-PCI Loans and Leases [Member] | Commercial and industrial loans [Member] | Commercial term [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans and leases receivable	184,083	182,685
Non-PCI Loans and Leases [Member] | Commercial and industrial loans [Member] | Commercial lines of credit [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans and leases receivable	190,255	181,894
Non-PCI Loans and Leases [Member] | Commercial and industrial loans [Member] | International loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans and leases receivable	35,042	34,622
Non-PCI Loans and Leases [Member] | Leases Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans and leases receivable	321,481	297,284
Non-PCI Loans and Leases [Member] | Consumer loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans and leases receivable	$ 14,899	$ 17,059

Loans and Leases - Additional I

Loans and Leases - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans and leases receivable	$ 4,413,557,000	$ 4,304,458,000
Accrued interest receivable	12,751,000	12,770,000
Loans and leases receivable	4,381,780,000	4,273,415,000
Loans 90 days or more past due and still accruing	17,000	0
Non-accrual Non-PCI loans and leases	15,345,000	15,805,000
Other real estate owned (OREO), net	1,660,000	1,946,000
TDR loans receivable	$ 14,600,000	15,400,000
Principal and interest due	3 months
Reserves relating to loans included in allowance for loan losses	$ 1,700,000	2,200,000
Home equity line of credit [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans and leases receivable	12,700,000	14,200,000
Securities Pledged as Collateral [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	1,100,000,000	1,100,000,000
Loans and Finance Receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrued interest receivable	10,300,000	10,200,000
Non-Accrual Loans and Leases, Excluding PCI Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual Non-PCI loans and leases	$ 1,000,000	$ 900,000

Loans and Leases - Activity for

Loans and Leases - Activity for SBA Loans Held for Sale (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Financing Receivable, Reclassification From Portfolio Loans To Loans Held For Sale [Roll Forward]
Balance at beginning of period	$ 6,394	$ 9,316
Originations	18,805	19,192
Sales	(19,187)	(19,643)
Principal payoffs and amortization	(4)	(16)
Balance at end of period	6,008	8,849
Real estate loans [Member]
Financing Receivable, Reclassification From Portfolio Loans To Loans Held For Sale [Roll Forward]
Balance at beginning of period	3,746	7,410
Originations	10,433	12,633
Sales	(12,028)	(12,254)
Principal payoffs and amortization	0	0
Balance at end of period	2,151	7,789
Commercial and industrial loans [Member]
Financing Receivable, Reclassification From Portfolio Loans To Loans Held For Sale [Roll Forward]
Balance at beginning of period	2,648	1,906
Originations	8,372	6,559
Sales	(7,159)	(7,389)
Principal payoffs and amortization	(4)	(16)
Balance at end of period	$ 3,857	$ 1,060

Loans and Leases - Allowance fo

Loans and Leases - Allowance for Loan and Lease Losses (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Allowance for loan losses:
Balance at beginning of period	$ 31,043
Loan and lease loss provision (income)	649	$ (80)
Balance at end of period	31,777
Allowance for loan and lease losses [Member]
Allowance for loan losses:
Balance at beginning of period	31,043	32,429
Charge-offs	(1,632)	(186)
Recoveries on loans and leases previously charged off	1,717	989
Net recoveries	85	803
Loan and lease loss provision (income)	649	(80)
Balance at end of period	$ 31,777	$ 33,152

Loans and Leases - Allowance 41

Loans and Leases - Allowance for Loan Losses by Portfolio Segment (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Allowance for loan losses:
Balance at beginning of period	$ 31,043
Loan and lease loss provision (income)	649	$ (80)
Balance at end of period	31,777
Loans receivable:
Total Loans and leases receivable	4,413,557		$ 4,304,458
Non-PCI Loans and Leases [Member]
Allowance for loan losses:
Balance at beginning of period	31,043	32,429
Charge-offs	(1,632)	(186)
Recoveries on loans and leases previously charged off	1,717	989
Loan and lease loss provision (income)	649	(80)
Balance at end of period	31,777	33,152
Ending balance: individually evaluated for impairment	3,016	4,547
Ending balance: collectively evaluated for impairment	28,761	28,605
Loans receivable:
Total Loans and leases receivable	4,413,557	3,943,951	$ 4,304,458
Individually evaluated for impairment	26,450	24,944
Collectively evaluated for impairment	4,387,107	3,919,007
Non-PCI Loans and Leases [Member] | Real estate loans [Member]
Allowance for loan losses:
Balance at beginning of period	17,012	26,134
Charge-offs	(989)	(104)
Recoveries on loans and leases previously charged off	885	712
Loan and lease loss provision (income)	732	(1,140)
Balance at end of period	17,640	25,602
Ending balance: individually evaluated for impairment	1,549	3,756
Ending balance: collectively evaluated for impairment	16,091	21,846
Loans receivable:
Total Loans and leases receivable	3,667,797	3,348,875
Individually evaluated for impairment	18,513	20,795
Collectively evaluated for impairment	3,649,284	3,328,080
Non-PCI Loans and Leases [Member] | Commercial and industrial loans [Member]
Allowance for loan losses:
Balance at beginning of period	7,400	5,623
Charge-offs	(279)	(40)
Recoveries on loans and leases previously charged off	736	277
Loan and lease loss provision (income)	(967)	95
Balance at end of period	6,890	5,955
Ending balance: individually evaluated for impairment	357	791
Ending balance: collectively evaluated for impairment	6,533	5,164
Loans receivable:
Total Loans and leases receivable	409,380	317,682
Individually evaluated for impairment	2,843	3,828
Collectively evaluated for impairment	406,537	313,854
Non-PCI Loans and Leases [Member] | Leases Receivable [Member]
Allowance for loan losses:
Balance at beginning of period	6,279	307
Charge-offs	(364)	(42)
Recoveries on loans and leases previously charged off	95	0
Loan and lease loss provision (income)	1,100	715
Balance at end of period	7,110	980
Ending balance: individually evaluated for impairment	1,110	0
Ending balance: collectively evaluated for impairment	6,000	980
Loans receivable:
Total Loans and leases receivable	321,481	259,591
Individually evaluated for impairment	4,200	0
Collectively evaluated for impairment	317,281	259,591
Non-PCI Loans and Leases [Member] | Consumer loans [Member]
Allowance for loan losses:
Balance at beginning of period	122	199
Charge-offs	0	0
Recoveries on loans and leases previously charged off	1	0
Loan and lease loss provision (income)	2	(69)
Balance at end of period	125	130
Ending balance: individually evaluated for impairment	0	0
Ending balance: collectively evaluated for impairment	125	130
Loans receivable:
Total Loans and leases receivable	14,899	17,803
Individually evaluated for impairment	894	321
Collectively evaluated for impairment	14,005	17,482
Non-PCI Loans and Leases [Member] | Unallocated [Member]
Allowance for loan losses:
Balance at beginning of period	230	166
Charge-offs	0	0
Recoveries on loans and leases previously charged off	0	0
Loan and lease loss provision (income)	(218)	319
Balance at end of period	12	485
Ending balance: individually evaluated for impairment	0	0
Ending balance: collectively evaluated for impairment	12	485
Loans receivable:
Total Loans and leases receivable	0	0
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	$ 0	$ 0

Loans and Leases - Credit Quali

Loans and Leases - Credit Quality of Loan and Lease Portfolio (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	$ 4,413,557	$ 4,304,458
Real estate loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	3,667,797	3,590,914
Real estate loans [Member] | Retail [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	909,414	915,273
Real estate loans [Member] | Hospitality [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	731,531	681,325
Real estate loans [Member] | Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	57,896	55,190
Real estate loans [Member] | Residential property [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	545,053	521,853
Commercial and industrial loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	409,380	399,201
Commercial and industrial loans [Member] | Commercial term [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	184,083	182,685
Commercial and industrial loans [Member] | Commercial lines of credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	190,255	181,894
Commercial and industrial loans [Member] | International loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	35,042	34,622
Leases Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	321,481	297,284
Consumer loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	14,899	17,059
Non-PCI Loans and Leases [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	4,413,557	4,304,458	$ 3,943,951
Non-PCI Loans and Leases [Member] | Pass/Pass-Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	4,366,668	4,255,791
Non-PCI Loans and Leases [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	15,636	17,469
Non-PCI Loans and Leases [Member] | Classified [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	31,253	31,198
Non-PCI Loans and Leases [Member] | Real estate loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	3,667,797	3,590,914
Non-PCI Loans and Leases [Member] | Real estate loans [Member] | Retail [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	909,414	915,273
Non-PCI Loans and Leases [Member] | Real estate loans [Member] | Hospitality [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	731,531	681,325
Non-PCI Loans and Leases [Member] | Real estate loans [Member] | Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	1,423,903	1,417,273
Non-PCI Loans and Leases [Member] | Real estate loans [Member] | Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	57,896	55,190
Non-PCI Loans and Leases [Member] | Real estate loans [Member] | Residential property [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	545,053	521,853
Non-PCI Loans and Leases [Member] | Real estate loans [Member] | Pass/Pass-Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	3,630,612	3,551,045
Non-PCI Loans and Leases [Member] | Real estate loans [Member] | Pass/Pass-Watch [Member] | Retail [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	903,510	909,682
Non-PCI Loans and Leases [Member] | Real estate loans [Member] | Pass/Pass-Watch [Member] | Hospitality [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	717,252	667,254
Non-PCI Loans and Leases [Member] | Real estate loans [Member] | Pass/Pass-Watch [Member] | Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	1,407,438	1,397,658
Non-PCI Loans and Leases [Member] | Real estate loans [Member] | Pass/Pass-Watch [Member] | Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	57,896	55,190
Non-PCI Loans and Leases [Member] | Real estate loans [Member] | Pass/Pass-Watch [Member] | Residential property [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	544,516	521,261
Non-PCI Loans and Leases [Member] | Real estate loans [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	13,936	16,780
Non-PCI Loans and Leases [Member] | Real estate loans [Member] | Special Mention [Member] | Retail [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	375	454
Non-PCI Loans and Leases [Member] | Real estate loans [Member] | Special Mention [Member] | Hospitality [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	4,220	4,976
Non-PCI Loans and Leases [Member] | Real estate loans [Member] | Special Mention [Member] | Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	9,040	11,045
Non-PCI Loans and Leases [Member] | Real estate loans [Member] | Special Mention [Member] | Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	0	0
Non-PCI Loans and Leases [Member] | Real estate loans [Member] | Special Mention [Member] | Residential property [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	301	305
Non-PCI Loans and Leases [Member] | Real estate loans [Member] | Classified [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	23,249	23,089
Non-PCI Loans and Leases [Member] | Real estate loans [Member] | Classified [Member] | Retail [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	5,529	5,137
Non-PCI Loans and Leases [Member] | Real estate loans [Member] | Classified [Member] | Hospitality [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	10,059	9,095
Non-PCI Loans and Leases [Member] | Real estate loans [Member] | Classified [Member] | Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	7,425	8,570
Non-PCI Loans and Leases [Member] | Real estate loans [Member] | Classified [Member] | Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	0	0
Non-PCI Loans and Leases [Member] | Real estate loans [Member] | Classified [Member] | Residential property [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	236	287
Non-PCI Loans and Leases [Member] | Commercial and industrial loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	409,380	399,201
Non-PCI Loans and Leases [Member] | Commercial and industrial loans [Member] | Commercial term [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	184,083	182,685
Non-PCI Loans and Leases [Member] | Commercial and industrial loans [Member] | Commercial lines of credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	190,255	181,894
Non-PCI Loans and Leases [Member] | Commercial and industrial loans [Member] | International loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	35,042	34,622
Non-PCI Loans and Leases [Member] | Commercial and industrial loans [Member] | Pass/Pass-Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	404,911	395,919
Non-PCI Loans and Leases [Member] | Commercial and industrial loans [Member] | Pass/Pass-Watch [Member] | Commercial term [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	180,355	179,835
Non-PCI Loans and Leases [Member] | Commercial and industrial loans [Member] | Pass/Pass-Watch [Member] | Commercial lines of credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	189,514	181,462
Non-PCI Loans and Leases [Member] | Commercial and industrial loans [Member] | Pass/Pass-Watch [Member] | International loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	35,042	34,622
Non-PCI Loans and Leases [Member] | Commercial and industrial loans [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	1,498	689
Non-PCI Loans and Leases [Member] | Commercial and industrial loans [Member] | Special Mention [Member] | Commercial term [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	757	439
Non-PCI Loans and Leases [Member] | Commercial and industrial loans [Member] | Special Mention [Member] | Commercial lines of credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	741	250
Non-PCI Loans and Leases [Member] | Commercial and industrial loans [Member] | Special Mention [Member] | International loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	0	0
Non-PCI Loans and Leases [Member] | Commercial and industrial loans [Member] | Classified [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	2,971	2,593
Non-PCI Loans and Leases [Member] | Commercial and industrial loans [Member] | Classified [Member] | Commercial term [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	2,971	2,411
Non-PCI Loans and Leases [Member] | Commercial and industrial loans [Member] | Classified [Member] | Commercial lines of credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	0	182
Non-PCI Loans and Leases [Member] | Commercial and industrial loans [Member] | Classified [Member] | International loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	0	0
Non-PCI Loans and Leases [Member] | Leases Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	321,481	297,284
Non-PCI Loans and Leases [Member] | Leases Receivable [Member] | Pass/Pass-Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	317,281	292,832
Non-PCI Loans and Leases [Member] | Leases Receivable [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	0	0
Non-PCI Loans and Leases [Member] | Leases Receivable [Member] | Classified [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	4,200	4,452
Non-PCI Loans and Leases [Member] | Consumer loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	14,899	17,059
Non-PCI Loans and Leases [Member] | Consumer loans [Member] | Pass/Pass-Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	13,864	15,995
Non-PCI Loans and Leases [Member] | Consumer loans [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	202	0
Non-PCI Loans and Leases [Member] | Consumer loans [Member] | Classified [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases receivable	$ 833	$ 1,064

Loans and Leases - Analysis of

Loans and Leases - Analysis of Past Due Loans, Disaggregated by Loan Class, Non-PCI (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans and leases receivable	$ 4,413,557	$ 4,304,458
Real estate loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans and leases receivable	3,667,797	3,590,914
Real estate loans [Member] | Hospitality [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans and leases receivable	731,531	681,325
Real estate loans [Member] | Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans and leases receivable	57,896	55,190
Real estate loans [Member] | Residential property [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans and leases receivable	545,053	521,853
Commercial and industrial loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans and leases receivable	409,380	399,201
Commercial and industrial loans [Member] | Commercial term [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans and leases receivable	184,083	182,685
Commercial and industrial loans [Member] | Commercial lines of credit [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans and leases receivable	190,255	181,894
Commercial and industrial loans [Member] | International loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans and leases receivable	35,042	34,622
Leases Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans and leases receivable	321,481	297,284
Consumer loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans and leases receivable	14,899	17,059
30-59 Days Past Due | Commercial and industrial loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	496	680
30-59 Days Past Due | Commercial and industrial loans [Member] | International loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	0	0
30-59 Days Past Due | Leases Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	2,211	2,295
Non-PCI Loans and Leases [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	17,419	17,529
Current	4,396,138	4,286,929
Total Loans and leases receivable	4,413,557	4,304,458	$ 3,943,951
Non-PCI Loans and Leases [Member] | Real estate loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	10,134	8,478
Current	3,657,663	3,582,436
Total Loans and leases receivable	3,667,797	3,590,914
Non-PCI Loans and Leases [Member] | Real estate loans [Member] | Retail [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	984	741
Current	908,430	914,532
Total Loans and leases receivable	909,414	915,273
Non-PCI Loans and Leases [Member] | Real estate loans [Member] | Hospitality [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	6,404	3,987
Current	725,127	677,338
Total Loans and leases receivable	731,531	681,325
Non-PCI Loans and Leases [Member] | Real estate loans [Member] | Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	1,031	3,141
Current	1,422,872	1,414,132
Total Loans and leases receivable	1,423,903	1,417,273
Non-PCI Loans and Leases [Member] | Real estate loans [Member] | Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	0	0
Current	57,896	55,190
Total Loans and leases receivable	57,896	55,190
Non-PCI Loans and Leases [Member] | Real estate loans [Member] | Residential property [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	1,715	609
Current	543,338	521,244
Total Loans and leases receivable	545,053	521,853
Non-PCI Loans and Leases [Member] | Commercial and industrial loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	1,161	2,258
Current	408,219	396,943
Total Loans and leases receivable	409,380	399,201
Non-PCI Loans and Leases [Member] | Commercial and industrial loans [Member] | Commercial term [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	1,161	1,826
Current	182,922	180,859
Total Loans and leases receivable	184,083	182,685
Non-PCI Loans and Leases [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	432
Current	190,255	181,462
Total Loans and leases receivable	190,255	181,894
Non-PCI Loans and Leases [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
Current	35,042	34,622
Total Loans and leases receivable	35,042	34,622
Non-PCI Loans and Leases [Member] | Leases Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	6,116	6,793
Current	315,365	290,491
Total Loans and leases receivable	321,481	297,284
Non-PCI Loans and Leases [Member] | Consumer loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	8	0
Current	14,891	17,059
Total Loans and leases receivable	14,899	17,059
Non-PCI Loans and Leases [Member] | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	10,656	8,346
Non-PCI Loans and Leases [Member] | 30-59 Days Past Due | Real estate loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	7,943	5,371
Non-PCI Loans and Leases [Member] | 30-59 Days Past Due | Real estate loans [Member] | Retail [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	295	96
Non-PCI Loans and Leases [Member] | 30-59 Days Past Due | Real estate loans [Member] | Hospitality [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	5,585	3,421
Non-PCI Loans and Leases [Member] | 30-59 Days Past Due | Real estate loans [Member] | Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	348	1,245
Non-PCI Loans and Leases [Member] | 30-59 Days Past Due | 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 and Leases [Member] | 30-59 Days Past Due | Real estate loans [Member] | Residential property [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	1,715	609
Non-PCI Loans and Leases [Member] | 30-59 Days Past Due | Commercial and industrial loans [Member] | Commercial term [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	496	430
Non-PCI Loans and Leases [Member] | 30-59 Days Past Due | 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	250
Non-PCI Loans and Leases [Member] | 30-59 Days Past Due | Consumer loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	6	0
Non-PCI Loans and Leases [Member] | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	1,224	3,027
Non-PCI Loans and Leases [Member] | 60-89 Days Past Due | Real estate loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	0	1,516
Non-PCI Loans and Leases [Member] | 60-89 Days Past Due | Real estate loans [Member] | Retail [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	0	15
Non-PCI Loans and Leases [Member] | 60-89 Days Past Due | Real estate loans [Member] | Hospitality [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	0	168
Non-PCI Loans and Leases [Member] | 60-89 Days Past Due | Real estate loans [Member] | Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	0	1,333
Non-PCI Loans and Leases [Member] | 60-89 Days Past Due | 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 and Leases [Member] | 60-89 Days Past Due | Real estate loans [Member] | Residential property [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	0	0
Non-PCI Loans and Leases [Member] | 60-89 Days Past Due | Commercial and industrial loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	406	567
Non-PCI Loans and Leases [Member] | 60-89 Days Past Due | Commercial and industrial loans [Member] | Commercial term [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	406	567
Non-PCI Loans and Leases [Member] | 60-89 Days Past Due | 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 and Leases [Member] | 60-89 Days Past Due | 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 and Leases [Member] | 60-89 Days Past Due | Leases Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	816	944
Non-PCI Loans and Leases [Member] | 60-89 Days Past Due | Consumer loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	2	0
Non-PCI Loans and Leases [Member] | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	5,539	6,156
Non-PCI Loans and Leases [Member] | 90 Days or More Past Due | Real estate loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	2,191	1,591
Non-PCI Loans and Leases [Member] | 90 Days or More Past Due | Real estate loans [Member] | Retail [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	689	630
Non-PCI Loans and Leases [Member] | 90 Days or More Past Due | Real estate loans [Member] | Hospitality [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	819	398
Non-PCI Loans and Leases [Member] | 90 Days or More Past Due | Real estate loans [Member] | Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	683	563
Non-PCI Loans and Leases [Member] | 90 Days or More Past Due | 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 and Leases [Member] | 90 Days or More Past Due | Real estate loans [Member] | Residential property [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	0	0
Non-PCI Loans and Leases [Member] | 90 Days or More Past Due | Commercial and industrial loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	259	1,011
Non-PCI Loans and Leases [Member] | 90 Days or More Past Due | Commercial and industrial loans [Member] | Commercial term [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	259	829
Non-PCI Loans and Leases [Member] | 90 Days or More Past Due | 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	182
Non-PCI Loans and Leases [Member] | 90 Days or More Past Due | 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 and Leases [Member] | 90 Days or More Past Due | Leases Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans and leases receivable	3,089	3,554
Non-PCI Loans and Leases [Member] | 90 Days or More Past Due | 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	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Financing Receivable, Impaired [Line Items]
Recorded Investment	$ 26,449		$ 27,183
Unpaid Principal Balance	29,098		29,623
With No Related Allowance Recorded	17,770		14,225
With an Allowance Recorded	8,680		12,958
Related Allowance	3,016		5,878
Average Recorded Investment	28,502	$ 25,070
Interest Income Recognized	367	376
Real estate loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	18,512		18,663
Unpaid Principal Balance	20,753		20,701
With No Related Allowance Recorded	14,597		11,783
With an Allowance Recorded	3,916		6,880
Related Allowance	1,549		2,093
Average Recorded Investment	19,937	20,854
Interest Income Recognized	303	314
Real estate loans [Member] | Retail [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	1,394		1,403
Unpaid Principal Balance	1,417		1,423
With No Related Allowance Recorded	1,336		1,246
With an Allowance Recorded	58		157
Related Allowance	5		1
Average Recorded Investment	1,409	1,667
Interest Income Recognized	22	31
Real estate loans [Member] | Hospitality [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	7,413		6,184
Unpaid Principal Balance	8,962		7,220
With No Related Allowance Recorded	3,671		2,144
With an Allowance Recorded	3,742		4,040
Related Allowance	1,543		1,677
Average Recorded Investment	8,105	6,254
Interest Income Recognized	141	67
Real estate loans [Member] | Other [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	7,255		8,513
Unpaid Principal Balance	7,778		9,330
With No Related Allowance Recorded	7,140		7,569
With an Allowance Recorded	116		944
Related Allowance	1		394
Average Recorded Investment	7,843	10,160
Interest Income Recognized	110	183
Real estate loans [Member] | Residential property [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	2,450		2,563
Unpaid Principal Balance	2,596		2,728
With No Related Allowance Recorded	2,450		824
With an Allowance Recorded	0		1,739
Related Allowance	0		21
Average Recorded Investment	2,580	2,773
Interest Income Recognized	30	33
Commercial and industrial loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	2,843		3,039
Unpaid Principal Balance	2,934		3,081
With No Related Allowance Recorded	1,344		1,068
With an Allowance Recorded	1,499		1,971
Related Allowance	357		441
Average Recorded Investment	2,914	3,892
Interest Income Recognized	40	59
Leases Receivable [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	4,200		4,452
Unpaid Principal Balance	4,324		4,626
With No Related Allowance Recorded	934		455
With an Allowance Recorded	3,265		3,997
Related Allowance	1,110		3,334
Average Recorded Investment	4,603
Interest Income Recognized	10
Consumer loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	894		1,029
Unpaid Principal Balance	1,087		1,215
With No Related Allowance Recorded	895		919
With an Allowance Recorded	0		110
Related Allowance	0		$ 10
Average Recorded Investment	1,048	324
Interest Income Recognized	$ 14	$ 3

Loans and Leases - Summary of I

Loans and Leases - Summary of Interest Foregone on Impaired Loans (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Receivables [Abstract]
Interest income that would have been recognized had impaired loans performed in accordance with their original terms	$ 654	$ 591
Less: Interest income recognized on impaired loans	(367)	(376)
Interest foregone on impaired loans	$ 287	$ 215

Loans and Leases - Non-Accrual

Loans and Leases - Non-Accrual Loans and Leases, Disaggregated by Class (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual Non-PCI loans and leases	$ 15,345	$ 15,805
Real estate loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual Non-PCI loans and leases	8,475	8,540
Real estate loans [Member] | Retail [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual Non-PCI loans and leases	237	224
Real estate loans [Member] | Hospitality [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual Non-PCI loans and leases	6,495	5,263
Real estate loans [Member] | Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual Non-PCI loans and leases	1,292	2,462
Real estate loans [Member] | Residential property [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual Non-PCI loans and leases	451	591
Commercial and industrial loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual Non-PCI loans and leases	1,881	1,892
Commercial and industrial loans [Member] | Commercial term [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual Non-PCI loans and leases	1,881	1,710
Commercial and industrial loans [Member] | Commercial lines of credit [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual Non-PCI loans and leases	0	182
Leases Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual Non-PCI loans and leases	4,200	4,452
Consumer loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual Non-PCI loans and leases	$ 789	$ 921

Loans and Leases - Non-Performi

Loans and Leases - Non-Performing Assets (Detail) - USD ($)	Mar. 31, 2018	Dec. 31, 2017
Receivables [Abstract]
Non-accrual Non-PCI loans and leases	$ 15,345,000	$ 15,805,000
Loans 90 days or more past due and still accruing	17,000	0
Total non-performing loans	15,362,000	15,805,000
OREO	1,660,000	1,946,000
Total non-performing assets	$ 17,022,000	$ 17,751,000

Loans and Leases - Troubled Deb

Loans and Leases - Troubled Debt Restructurings, Disaggregated by Type of Concession and by Loan Type (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Modifications [Line Items]
Non-Accrual TDRs, Deferral of Principal	$ 2,396	$ 2,877
Non-Accrual TDRs, Deferral of Principal and Interest	3,816	3,884
Non-Accrual TDRs, Reduction of Principal and Interest	755	1,237
Non-Accrual TDRs, Extension of Maturity	484	102
Non-Accrual TDRs, Total	7,451	8,100
Accrual TDRs, Deferral of Principal	3,408	3,415
Accrual Tdrs Deferral Of Principal and Interest	177	182
Accrual TDRs, Reduction of Principal and Interest	1,931	1,998
Accrual TDRs, Extension of Maturity	1,599	1,664
Accrual TDRs	7,115	7,259
Real estate loans [Member]
Financing Receivable, Modifications [Line Items]
Non-Accrual TDRs, Deferral of Principal	1,479	1,935
Non-Accrual TDRs, Deferral of Principal and Interest	3,709	3,761
Non-Accrual TDRs, Reduction of Principal and Interest	15	64
Non-Accrual TDRs, Extension of Maturity	0	0
Non-Accrual TDRs, Total	5,203	5,760
Accrual TDRs, Deferral of Principal	3,408	3,409
Accrual Tdrs Deferral Of Principal and Interest	0	0
Accrual TDRs, Reduction of Principal and Interest	1,356	1,387
Accrual TDRs, Extension of Maturity	1,230	1,237
Accrual TDRs	5,994	6,033
Commercial and industrial loans [Member]
Financing Receivable, Modifications [Line Items]
Non-Accrual TDRs, Deferral of Principal	128	131
Non-Accrual TDRs, Deferral of Principal and Interest	107	123
Non-Accrual TDRs, Reduction of Principal and Interest	740	1,173
Non-Accrual TDRs, Extension of Maturity	484	102
Non-Accrual TDRs, Total	1,459	1,529
Accrual TDRs, Deferral of Principal		6
Accrual Tdrs Deferral Of Principal and Interest	177	182
Accrual TDRs, Reduction of Principal and Interest	471	503
Accrual TDRs, Extension of Maturity	369	427
Accrual TDRs	1,017	1,118
Consumer loans [Member]
Financing Receivable, Modifications [Line Items]
Non-Accrual TDRs, Deferral of Principal	789	811
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	789	811
Accrual TDRs, Deferral of Principal	0	0
Accrual Tdrs Deferral Of Principal and Interest	0	0
Accrual TDRs, Reduction of Principal and Interest	104	108
Accrual TDRs, Extension of Maturity	0	0
Accrual TDRs	$ 104	$ 108

Servicing Assets and Liabilit49

Servicing Assets and Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Servicing assets:
Balance at beginning of period	$ 10,218	$ 10,564
Addition related to sale of SBA loans	435	442
Amortization	(786)	(727)
Reversal of allowance	0	330
Balance at end of period	9,867	10,609
Servicing liabilities:
Balance at beginning of period	2,217	3,143
Amortization	(195)	(300)
Reversal of allowance	0	(67)
Balance at end of period	2,022	2,776
Serviced loans sold to unaffiliated parties	471,900	476,500
Servicing fee income	1,100	1,200
Net amortization expense	$ 591	$ 427

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	Jan. 01, 2018	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Operating Loss Carryforwards [Line Items]
Provision (benefit) for income taxes for continuing operations		$ 5,724	$ 8,628
Effective income tax rate		27.80%	38.50%
Valuation allowance		$ 2,800		$ 2,800
Net deferred tax asset		$ 35,600		$ 38,300
ASU 2018-02 [Member]
Operating Loss Carryforwards [Line Items]
Impact on retained earnings of adopting recent accounting pronouncement	$ 399

Borrowings and Subordinated D51

Borrowings and Subordinated Debentures - Additional Information (Detail) - USD ($)	Mar. 21, 2017	Dec. 31, 2005	Dec. 31, 2005	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017	Aug. 31, 2014
Debt Instrument [Line Items]
Borrowings				$ 220,000,000		$ 150,000,000
Interest on borrowings				$ 679,000	$ 468,000
Weighted-average interest rate				1.54%	0.70%
Loans pledged as collateral				$ 1,100,000,000
Borrowing capacity				871,000,000
Available borrowing capacity				651,000,000
Loans pledged with FRB				8,100,000
Borrowing capacity through Fed Discount Window				8,000,000
Outstanding borrowings				0		0
Subordinated Debentures [Member]
Debt Instrument [Line Items]
Subordinated debentures issued	$ 100,000,000
Fixed interest rate	5.45%
Debt issue cost	$ 2,300,000
Debt outstanding, net of issuance cost				98,000,000
Amortization of debt issue costs				45,000	$ 4,000
Subordinated Debentures [Member] | 3-month London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Basis spread	3.315%
Central Bancorp, Inc [Member] | Subordinated Debentures [Member]
Debt Instrument [Line Items]
Subordinated debentures issued		$ 26,000,000	$ 26,000,000
Fixed interest rate		6.26%	6.26%
Debt outstanding, net of issuance cost				19,400,000		19,000,000
Unpaid principal balance							$ 26,800,000
Estimated fair value							18,500,000
Debt instrument discount				7,600,000		$ 7,700,000	$ 8,300,000
Term for the initial fixed interest rate			5 years
Optional interest payment deferral period (not to exceed)			5 years
Amortization of discount on debentures				$ 86,000	$ 77,000
Central Bancorp, Inc [Member] | Subordinated Debentures [Member] | 3-month London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Basis spread		1.40%

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Basic EPS:
Net income	$ 14,855	$ 13,783
Less: income allocated to unvested restricted shares	89	84
Income allocated to common shares	$ 14,766	$ 13,699
Weighted-average shares for basic EPS (shares)	32,145,214	32,001,766
Basic earnings per share (in usd per share)	$ 0.46	$ 0.43
Effect of dilutive securities - options and unvested restricted stock (shares)	155,881	189,692
Diluted EPS:
Income allocated to common shares	$ 14,766	$ 13,699
Weighted-average shares for diluted EPS (shares)	32,301,095	32,191,458
Diluted earnings per share (in usd per share)	$ 0.46	$ 0.43

Earnings Per Share - Additional

Earnings Per Share - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2018shares
Stock option awards [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of diluted EPS (shares)	0

Accumulated Other Comprehensi54

Accumulated Other Comprehensive Income - Activity in Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
AOCI before Tax, Attributable to Parent	$ (11,523)	$ (2,738)
Balance at beginning of period	562,477	531,025
OCI, before Reclassifications, Net of Tax, Attributable to Parent	(6,321)	1,060
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent	(17)	(269)
Change in unrealized gain (loss) on securities available for sale, net of income taxes	(6,338)
Change in unrealized gain (loss) on securities available for sale, net of income taxes	(6,321)	791
Balance at end of period	564,278	539,542
Accumulated Net Unrealized Investment Gain (Loss) [Member]
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
AOCI before Tax, Attributable to Parent	(3,188)	(4,089)
OCI, before Reclassifications, before Tax, Attributable to Parent	(8,864)	1,620
Reclassification from AOCI, Current Period, before Tax, Attributable to Parent	529	(269)
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent	(8,335)	1,351
Tax Expense Benefit [Member]
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
AOCI Tax, Attributable to Parent	1,319	1,695
Other comprehensive (loss) income before reclassification, tax	2,543	(560)
Reclassification from accumulated other comprehensive income, tax	(546)	0
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent	1,997	(560)
AOCI Tax, Attributable to Parent	3,316	1,135
AOCI Attributable to Parent [Member]
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at beginning of period	(1,869)	(2,394)
Change in unrealized gain (loss) on securities available for sale, net of income taxes	(6,321)	791
Balance at end of period	$ (8,207)	$ (1,603)

Accumulated Other Comprehensi55

Accumulated Other Comprehensive Income - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Accumulated Other Comprehensive Income [Line Items]
Net (loss) gain on sales of securities	$ (428)	$ 269
Net unrealized gains (losses) recorded in comprehensive income	(529)	319
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Unrealized Investment Gain (Loss) [Member]
Accumulated Other Comprehensive Income [Line Items]
Net (loss) gain on sales of securities		$ 269
ASU 2016-01 [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Unrealized Investment Gain (Loss) [Member]
Accumulated Other Comprehensive Income [Line Items]
Reduction of unrealized losses related to securities	529
ASU 2016-01 and ASU 2018-02 [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Unrealized Investment Gain (Loss) [Member]
Accumulated Other Comprehensive Income [Line Items]
Net (loss) gain on sales of securities	17
Reduction in tax benefits upon adoption of ASUs	$ 546

Regulatory Matters - Capital Ra

Regulatory Matters - Capital Ratios of Hanmi Financial and Bank (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Hanmi Financial [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Capital conservation buffer (percent)	6.52%	6.55%
Actual Capital, Total capital to risk-weighted assets	$ 695,483	$ 684,272
Actual Capital, Tier 1 capital to risk-weighted assets	564,376	553,970
Actual Capital, Common equity Tier 1 capital to risk-weighted assets	544,983	537,950
Actual Capital, Tier 1 capital to average assets	$ 564,376	$ 553,970
Actual Capital Ratio, Total capital to risk-weighted assets	15.43%	15.50%
Actual Capital Ratio, Tier 1 capital to risk-weighted assets	12.52%	12.55%
Actual Capital Ratio, Common equity Tier 1 capital to risk-weighted assets	12.09%	12.19%
Actual Capital Ratio, Tier 1 capital to average assets	10.88%	10.79%
Minimum Regulatory Requirement Capital, Total capital to risk-weighted assets	$ 360,582	$ 353,171
Minimum Regulatory Requirement Capital, Tier 1 capital to risk-weighted assets	270,436	264,878
Minimum Regulatory Requirement Capital, Common equity Tier 1 capital to risk-weighted assets	202,827	198,658
Minimum Regulatory Requirement Capital, Tier 1 capital to average assets	$ 207,452	$ 205,344
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]
Capital conservation buffer (percent)	7.13%	7.20%
Actual Capital, Total capital to risk-weighted assets	$ 681,539	$ 670,896
Actual Capital, Tier 1 capital to risk-weighted assets	648,439	638,557
Actual Capital, Common equity Tier 1 capital to risk-weighted assets	648,439	638,557
Actual Capital, Tier 1 capital to average assets	$ 648,439	$ 638,557
Actual Capital Ratio, Total capital to risk-weighted assets	15.13%	15.20%
Actual Capital Ratio, Tier 1 capital to risk-weighted assets	14.39%	14.47%
Actual Capital Ratio, Common equity Tier 1 capital to risk-weighted assets	14.39%	14.47%
Actual Capital Ratio, Tier 1 capital to average assets	12.51%	12.44%
Minimum Regulatory Requirement Capital, Total capital to risk-weighted assets	$ 360,395	$ 353,091
Minimum Regulatory Requirement Capital, Tier 1 capital to risk-weighted assets	270,296	264,818
Minimum Regulatory Requirement Capital, Common equity Tier 1 capital to risk-weighted assets	202,722	198,614
Minimum Regulatory Requirement Capital, Tier 1 capital to average assets	$ 207,361	$ 205,385
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	$ 450,494	$ 441,364
Minimum to Be Categorized as Well Capitalized Capital, Tier 1 capital to risk-weighted assets	360,395	353,091
Minimum to Be Categorized as Well Capitalized Capital, Common equity Tier 1 capital to risk-weighted assets	292,821	286,886
Minimum to Be Categorized as Well Capitalized Capital, Tier 1 capital to average assets	$ 259,201	$ 256,731
Minimum to Be Categorized as Well Capitalized Ratio, Total capital to risk-weighted assets	10.00%	10.00%
Minimum to Be Categorized as Well Capitalized Ratio, Tier 1 capital to risk-weighted assets	8.00%	8.00%
Minimum to Be Categorized as Well Capitalized Ratio, Common equity Tier 1 capital to risk-weighted assets	6.50%	6.50%
Minimum to Be Categorized as Well Capitalized Ratio, Tier 1 capital to average assets	5.00%	5.00%

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Detail)	Mar. 31, 2018USD ($)
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

Fair Value Measurements - Asset

Fair Value Measurements - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	$ 570,351	$ 578,804
Mortgage-backed securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	314,969
Collateralized mortgage obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	124,188
U.S. government agency securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	7,368	7,414
Municipal bonds-tax exempt [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	123,826	127,475
U.S treasury securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		152
Mutual funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		22,386
Recurring Basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	570,351	578,804
Recurring Basis [Member] | Mortgage-backed securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	314,969	303,609
Recurring Basis [Member] | Collateralized mortgage obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	124,188	117,768
Recurring Basis [Member] | U.S. government agency securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	7,368	7,414
Recurring Basis [Member] | Municipal bonds-tax exempt [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	123,826	127,475
Recurring Basis [Member] | U.S treasury securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		152
Recurring Basis [Member] | Mutual funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		22,386
Recurring Basis [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	570,351	556,266
Recurring Basis [Member] | Fair Value, Inputs, Level 2 [Member] | U.S treasury securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		0
Recurring Basis [Member] | Fair Value, Inputs, Level 2 [Member] | Mutual funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		0
Recurring Basis [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Recurring Basis [Member] | Fair Value, Inputs, Level 3 [Member] | Mortgage-backed securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Recurring Basis [Member] | Fair Value, Inputs, Level 3 [Member] | Collateralized mortgage obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Recurring Basis [Member] | Fair Value, Inputs, Level 3 [Member] | U.S. government agency securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Recurring Basis [Member] | Fair Value, Inputs, Level 3 [Member] | Municipal bonds-tax exempt [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Recurring Basis [Member] | Fair Value, Inputs, Level 3 [Member] | U.S treasury securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		0
Recurring Basis [Member] | Fair Value, Inputs, Level 3 [Member] | Mutual funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		0
Recurring Basis [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	22,538
Recurring Basis [Member] | Fair Value, Inputs, Level 1 [Member] | Mortgage-backed securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Recurring Basis [Member] | Fair Value, Inputs, Level 1 [Member] | Collateralized mortgage obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Recurring Basis [Member] | Fair Value, Inputs, Level 1 [Member] | U.S. government agency securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Recurring Basis [Member] | Fair Value, Inputs, Level 1 [Member] | Municipal bonds-tax exempt [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	$ 0	$ 0

Fair Value Measurements - Ass59

Fair Value Measurements - Assets and Liabilities Measured at Fair Value on Non-Recurring Basis (Detail) - Non-recurring Basis [Member] - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unrealized losses impaired loans	$ 456	$ 2,730
Unrealized losses other real estate owned	0	0
Impaired loans [Member] | Real estate loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	4,700	6,700
Impaired loans [Member] | Commercial and industrial loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	1,100	1,700
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0	0
Other real estate owned	0	0
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	4,786	6,121
Other real estate owned	1,660	1,946
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	1,031	2,436
Other real estate owned	$ 0	$ 0

Fair Value Measurements - Estim

Fair Value Measurements - Estimated Fair Values of Financial Instruments (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financial assets:
Cash and due from banks	$ 151,611	$ 153,826
Securities available for sale	570,351	578,804
Accrued interest receivable	12,751	12,770
Financial liabilities:
Noninterest-bearing deposits	1,352,162	1,312,274
Interest-bearing deposits	3,025,939	3,036,380
Accrued interest payable	5,931	5,309
Carrying Amount [Member]
Financial assets:
Cash and due from banks	151,611	153,826
Securities available for sale	570,351	578,804
Loans and leases receivable, net of allowance for loan and lease losses	4,381,780	4,273,415
Loans held for sale	6,008	6,394
Accrued interest receivable	12,751	12,770
FHLB stock	16,385	16,385
Financial liabilities:
Noninterest-bearing deposits	1,352,162	1,312,274
Interest-bearing deposits	3,025,939	3,036,380
Borrowings and subordinated debentures	337,400	267,270
Accrued interest payable	5,931	5,309
Off-balance sheet items:
Commitments to extend credit	324,528	318,634
Carrying Amount [Member] | Standby letters of credit [Member]
Off-balance sheet items:
Letters of credit	22,288	19,294
Carrying Amount [Member] | Commercial letters of credit [Member]
Off-balance sheet items:
Letters of credit	11,560	9,308
Fair Value, Inputs, Level 1 [Member] | Fair Value [Member]
Financial assets:
Cash and due from banks	151,611	153,826
Securities available for sale		22,538
Loans and leases receivable, net of allowance for loan and lease losses	0	0
Loans held for sale	0	0
Accrued interest receivable	12,751	12,770
FHLB stock	0	0
Financial liabilities:
Noninterest-bearing deposits	0	0
Interest-bearing deposits	0	0
Borrowings and subordinated debentures	0	0
Accrued interest payable	5,931	5,309
Off-balance sheet items:
Commitments to extend credit	0	0
Fair Value, Inputs, Level 1 [Member] | Fair Value [Member] | Standby letters of credit [Member]
Off-balance sheet items:
Letters of credit	0	0
Fair Value, Inputs, Level 1 [Member] | Fair Value [Member] | Commercial letters of credit [Member]
Off-balance sheet items:
Letters of credit	0	0
Fair Value, Inputs, Level 2 [Member] | Fair Value [Member]
Financial assets:
Cash and due from banks	0	0
Securities available for sale		556,266
Loans and leases receivable, net of allowance for loan and lease losses	0	0
Loans held for sale	6,461	6,394
Accrued interest receivable	0	0
FHLB stock	16,385	16,385
Financial liabilities:
Noninterest-bearing deposits	1,352,162	1,312,274
Interest-bearing deposits	0	0
Borrowings and subordinated debentures	0	0
Accrued interest payable	0	0
Off-balance sheet items:
Commitments to extend credit	0	0
Fair Value, Inputs, Level 2 [Member] | Fair Value [Member] | Standby letters of credit [Member]
Off-balance sheet items:
Letters of credit	0	0
Fair Value, Inputs, Level 2 [Member] | Fair Value [Member] | Commercial letters of credit [Member]
Off-balance sheet items:
Letters of credit	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value [Member]
Financial assets:
Cash and due from banks	0	0
Securities available for sale		0
Loans and leases receivable, net of allowance for loan and lease losses	4,392,889	4,213,689
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	2,905,169	2,973,139
Borrowings and subordinated debentures	337,822	267,270
Accrued interest payable	0	0
Off-balance sheet items:
Commitments to extend credit	324,528	318,634
Fair Value, Inputs, Level 3 [Member] | Fair Value [Member] | Standby letters of credit [Member]
Off-balance sheet items:
Letters of credit	22,288	19,294
Fair Value, Inputs, Level 3 [Member] | Fair Value [Member] | Commercial letters of credit [Member]
Off-balance sheet items:
Letters of credit	$ 11,560	$ 9,308

Share-Based Compensation - Addi

Share-Based Compensation - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Share-based compensation expense	$ 884	$ 692
Related tax benefits on non-qualified stock options	$ 247	$ 276
Number of shares, stock options exercised (shares)	25,750	1,000

Share-Based Compensation - Unre

Share-Based Compensation - Unrecognized Share-Based Compensation Expense (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2018USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Expense	$ 6,077
Average Expected Recognition Period	2 years 2 months 12 days
Stock option awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Expense	$ 4
Average Expected Recognition Period	2 months 12 days
Restricted stock awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Expense	$ 6,073
Average Expected Recognition Period	2 years

Share-Based Compensation - Summ

Share-Based Compensation - Summary of Stock Options Outstanding under Plans (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Jun. 30, 2017	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Number of Shares, Options outstanding at beginning of period	364,088
Number of shares, stock options exercised (shares)	(25,750)	(1,000)
Number of Shares, Options outstanding at end of period	338,338
Number of Shares, Options exercisable at end of period	329,003
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)	$ 17.86
Weighted-Average Exercise Price Per Share, Options exercised (in usd per share)	22.06
Weighted-Average Exercise Price Per Share, Options outstanding at end of period (in usd per share)	17.54
Weighted-Average Exercise Price Per Share, Options exercisable at end of period (in usd per share)	$ 17.37
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term [Abstract]
Weighted-Average Remaining Contractual Life, Options outstanding at beginning of period	5 years 6 months		5 years 10 months 24 days
Weighted-Average Remaining Contractual Life, Options exercised	5 years 10 months 24 days
Weighted-Average Remaining Contractual Life, Options outstanding at end of period	5 years 6 months		5 years 10 months 24 days
Weighted-Average Remaining Contractual Life, Options exercisable at end of period	5 years 4 months 24 days
Aggregate Intrinsic Value of In-the-Money Options, Options outstanding at beginning of period	$ 4,548
Aggregate Intrinsic Value of In-the-Money Options, Options outstanding at end of period	4,469
Aggregate Intrinsic Value of In-the-Money Options, Options exercisable at end of period	$ 4,625
Intrinsic value represents the excess of the closing stock price related to options outstanding (in usd per share)	$ 30.75			$ 30.35

Share-Based Compensation - Sche

Share-Based Compensation - Schedule of Restricted Stock Awards (Detail) - Restricted stock awards [Member]	3 Months Ended
	Mar. 31, 2018$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
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 | shares	317,783
Number of Shares, Restricted stock granted | shares	97,724
Number of Shares, Restricted stock vested | shares	(52,913)
Number of Shares, Restricted stock forfeited | shares	(38,498)
Number of Shares, Restricted stock at end of period | shares	324,096
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Weighted-Average Grant Date Fair Value Per Share, Restricted stock at beginning of period (in usd per share) | $ / shares	$ 21.09
Weighted-Average Grant Date Fair Value Per Share, Restricted stock granted (in usd per share) | $ / shares	24.08
Weighted-Average Grant Date Fair Value Per Share, Restricted stock vested (in usd per share) | $ / shares	26.86
Weighted-Average Grant Date Fair Value Per Share, Restricted stock forfeited (in usd per share) | $ / shares	9.97
Weighted-Average Grant Date Fair Value Per Share, Restricted stock at end of period (in usd per share) | $ / shares	$ 22.38

Off-Balance Sheet Commitments -

Off-Balance Sheet Commitments - Distribution of Undisbursed Loan Commitments (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Loss Contingencies [Line Items]
Total undisbursed loan commitments	$ 358,376		$ 347,236
Allowance for Loan Off-Balance Sheet Items [Roll Forward]
Balance at beginning of period	31,043
Loan and lease loss provision (income)	649	$ (80)
Balance at end of period	31,777
Non-PCI Loans and Leases [Member]
Allowance for Loan Off-Balance Sheet Items [Roll Forward]
Balance at beginning of period	31,043	32,429
Loan and lease loss provision (income)	649	(80)
Balance at end of period	31,777	33,152
Allowance for off-balance sheet items [Member] | Non-PCI Loans and Leases [Member]
Allowance for Loan Off-Balance Sheet Items [Roll Forward]
Balance at beginning of period	1,296	1,184
Loan and lease loss provision (income)	27	0
Balance at end of period	1,323	$ 1,184
Commitments to extend credit [Member]
Loss Contingencies [Line Items]
Total undisbursed loan commitments	324,528		318,634
Standby letters of credit [Member]
Loss Contingencies [Line Items]
Total undisbursed loan commitments	22,288		19,294
Commercial letters of credit [Member]
Loss Contingencies [Line Items]
Total undisbursed loan commitments	$ 11,560		$ 9,308