Hanmi Financial (HAFC) 10-Q 11 May 15 2015 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Mar. 31, 2015	Apr. 30, 2015
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	FALSE
Document Period End Date	31-Mar-15
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Trading Symbol	HAFC
Entity Registrant Name	HANMI FINANCIAL CORP
Entity Central Index Key	1109242
Current Fiscal Year End Date	-19
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		31,936,384

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Assets
Cash and cash equivalents	$182,054	$158,320
Securities available for sale, at fair value (amortized cost of $849,190 as of March 31, 2015 and $1,061,703 as of December 31, 2014)	858,064	1,060,717
Loans held for sale, at the lower of cost or fair value	8,677	5,451
Loans receivable, net of allowance for loan losses of $52,951 as of March 31, 2015 and $52,666 as of December 31, 2014	2,767,080	2,735,832
Accrued interest receivable	9,238	9,749
Premises and equipment, net	30,934	30,912
Other real estate owned ("OREO"), net	12,114	15,790
Customers' liability on acceptances	2,598	1,847
Servicing assets	13,321	13,773
Other intangible assets, net	1,985	2,080
Investment in Federal Home Loan Bank stock ("FHLB"), at cost	17,581	17,580
Investment in Federal Reserve Bank ("FRB") stock, at cost	12,273	12,273
Income tax asset	86,478	84,371
Bank-owned life insurance	47,795	48,866
Prepaid expenses	3,918	2,672
Other assets	29,905	32,210
Total assets	4,084,015	4,232,443
Deposits:
Noninterest-bearing	1,064,695	1,022,972
Interest-bearing	2,487,981	2,533,774
Total deposits	3,552,676	3,556,746
Accrued interest payable	3,497	3,450
Bank's liability on acceptances	2,598	1,847
FHLB advances		150,000
Servicing liabilities	5,529	5,971
FDIC loss sharing liability	543	2,074
Rescinded stock obligation	150	933
Subordinated debentures	18,582	18,544
Accrued expenses and other liabilities	32,970	39,491
Total liabilities	3,616,545	3,779,056
Stockholders' equity:
Common stock, $0.001 par value; authorized 62,500,000 shares; issued 32,511,528 shares (31,933,634 shares outstanding) as of March 31, 2015 and 32,488,097 shares (31,910,203 shares outstanding) as of December 31, 2014	257	257
Additional paid-in capital	555,710	554,904
Accumulated other comprehensive income, net of tax expense (benefit) of $2,691 as of March 31, 2015 and ($1,432) as of December 31, 2014	6,199	463
Accumulated deficit	-24,838	-32,379
Less: treasury stock, at cost; 577,894 shares as of March 31, 2015 and December 31, 2014	-69,858	-69,858
Total stockholders' equity	467,470	453,387
Total liabilities and stockholders' equity	$4,084,015	$4,232,443

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, except Share data, unless otherwise specified
Statement of Financial Position [Abstract]
Amortized cost of securities available-for-sale	$849,190	$1,061,703
Allowance for loan losses of loans receivable	52,951	52,666
Common stock, par value	$0.00	$0.00
Common stock, shares authorized	62,500,000	62,500,000
Common stock, shares issued	32,511,528	32,488,097
Common stock, shares outstanding	31,933,634	31,910,203
Accumulated other comprehensive income (loss), net of tax expense (benefit)	$2,691	($1,432)
Treasury stock, shares	577,894	577,894

Consolidated_Statements_of_Inc

Consolidated Statements of Income (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Interest and Dividend Income:
Interest and fees on loans	$37,250	$27,329
Taxable interest on investment securities	3,854	2,537
Tax-exempt interest on investment securities	20	76
Interest on interest-bearing deposits in other banks	48	21
Dividends on FRB stock	184	168
Dividends on FHLB stock	298	236
Total interest and dividend income	41,654	30,367
Interest Expense:
Interest on deposits	3,780	3,221
Interest on FHLB advances	56	48
Interest on subordinated debentures	145
Total interest expense	3,981	3,269
Net interest income before provision for credit losses	37,673	27,098
Negative provision for credit losses	-1,985	-3,300
Net interest income after provision for credit losses	39,658	30,398
Noninterest Income:
Service charges on deposit accounts	3,211	2,474
Remittance fees	561	438
Trade finance fees	281	252
Other service charges and fees	425	331
Bank-owned life insurance income	253	223
Gain on sale of SBA loans	1,684	547
Net gain on sales of investment securities	2,184	1,421
Disposition gains on PCI loans	881
Other operating income	1,154	528
Total noninterest income	10,634	6,214
Noninterest Expense:
Salaries and employee benefits	16,384	10,259
Occupancy and equipment	4,303	2,396
Merger and integration costs	1,611	85
Deposit insurance premiums and regulatory assessments	893	437
Data processing	2,132	1,158
OREO expense	417	6
Professional fees	2,341	748
Directors and officers liability insurance	176	191
Supplies and communications	830	501
Advertising and promotion	523	581
Loan-related expense	669	83
Amortization of other intangible assets	95
Other operating expenses	1,330	1,354
Total noninterest expense	31,704	17,799
Income from continuing operations before provision for income taxes	18,588	18,813
Provision for income taxes	7,534	7,844
Income from continuing operations, net of taxes	11,054	10,969
Discontinued operations:
Income from operations of discontinued subsidiaries		37
Income tax expense		15
Income from discontinued operations		22
Net income	$11,054	$10,991
Basic earnings per share:
Income from continuing operations, net of taxes	$0.35	$0.35
Income from discontinued operations, net of taxes	$0	$0
Basic earnings per share	$0.35	$0.35
Diluted earnings per share:
Income from continuing operations, net of taxes	$0.35	$0.34
Income from discontinued operations, net of taxes	$0	$0
Diluted earnings per share	$0.35	$0.34
Weighted-average shares outstanding:
Basic	31,747,299	31,659,705
Diluted	32,026,723	31,934,163

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income	$11,054	$10,991
Unrealized gain on securities
Unrealized holding gain arising during period	12,043	8,098
Less: reclassification adjustment for net gain included in net income	-2,184	-1,421
Unrealized loss on interest-only strip of servicing assets		1
Income tax expense related to items of other comprehensive income	-4,123	-2,807
Other comprehensive income (loss)	5,736	3,871
Comprehensive Income	$16,790	$14,862

Consolidated_Statements_of_Cha

Consolidated Statements of Changes in Stockholders' Equity (USD $)	Total	Common Stock - Number of Shares, Shares Issued [Member]	Common Stock - Number of Shares, Treasury Shares [Member]	Common Stock - Number of Shares, Shares Outstanding [Member]	Stockholders' Equity, Additional Paid-in Capital [Member]	Stockholders' Equity, Accumulated Other Comprehensive Income (Loss) [Member]	Stockholders' Equity, Accumulated Deficit [Member]
In Thousands, except Share data, unless otherwise specified
Beginning balance at Dec. 31, 2013	$400,077	$257	($69,858)		$552,270	($9,380)	($73,212)
Beginning balance, shares at Dec. 31, 2013		32,339,444	-577,894	31,761,550
Exercises of stock options	190				190
Exercises of stock options, shares	15,195	15,195		15,195
Exercises of stock warrants	2				2
Exercises of stock warrants, shares		363		363
Restricted stock awards, net of shares forfeited	0	0	0	0	0	0	0
Restricted stock awards, net of shares forfeited, shares		18,000		18,000
Share-based compensation expense	605				605
Cash dividends declared	-2,225						-2,225
Comprehensive income:
Net income	10,991						10,991
Change in unrealized gain (loss) on securities available for sale and interest-only strips, net of income taxes	3,871					3,871
Ending balance at Mar. 31, 2014	413,511	257	-69,858		553,067	-5,509	-64,446
Ending balance, shares at Mar. 31, 2014		32,373,002	-577,894	31,795,108
Beginning balance at Dec. 31, 2014	453,387	257	-69,858		554,904	463	-32,379
Beginning balance, shares at Dec. 31, 2014		32,488,097	-577,894	31,910,203
Exercises of stock options	278				278
Exercises of stock options, shares	19,581	19,581		19,581
Restricted stock awards, net of shares forfeited	0	0	0	0	0	0	0
Restricted stock awards, net of shares forfeited, shares		3,850		3,850
Share-based compensation expense	528				528
Cash dividends declared	-3,513						-3,513
Comprehensive income:
Net income	11,054						11,054
Change in unrealized gain (loss) on securities available for sale and interest-only strips, net of income taxes	5,736					5,736
Ending balance at Mar. 31, 2015	$467,470	$257	($69,858)		$555,710	$6,199	($24,838)
Ending balance, shares at Mar. 31, 2015		32,511,528	-577,894	31,933,634

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Cash flows from operating activities:
Net income	$11,054	$10,991
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	5,441	1,556
Share-based compensation expense	528	605
Negative provision for credit losses	-1,985	-3,300
Gain on sales of investment securities	-2,184	-1,421
Gain on sales of loans	-1,684	-547
Disposition gains on PCI loans	-881
Loss on sales of other real estate owned		2
Valuation adjustment on OREO	-215
Origination of loans held for sale	-23,108	-6,354
Proceeds from sales of SBA loans guaranteed portion	21,996	6,626
Change in accrued interest receivable	511	-52
Change in FDIC loss sharing liability	-1,531
Change in bank-owned life insurance	-253	-223
Change in prepaid expenses	-1,246	-847
Change in other assets	989	7,388
Change in income tax assets	-6,230	7,534
Change in accrued interest payable	47	-47
Change in other liabilities	-6,256	1,354
Net cash (used in) provided by operating activities	-5,007	23,265
Cash flows from investing activities:
Proceeds from matured or called securities available for sale	34,613	13,049
Proceeds from sales of securities available for sale	176,848	85,234
Proceeds from sales of other real estate owned	4,038	734
Proceeds from liquidation on bank-owned life insurance	1,323
Change in loans receivable	13,611	-40,728
Purchases of securities available for sale		-55,751
Purchases of premises and equipment	-903	-120
Purchases of loans receivable	-43,979
Purchases of FRB stock	-1
Net cash provided by investing activities	185,550	2,418
Cash flows from financing activities:
Change in deposits	-4,070	-5,745
Change in short-term FHLB advances	-150,000	4,899
Redemption of rescinded stock obligation	-783
Proceeds from exercise of stock options	278	190
Cash dividends paid	-2,234
Net cash used in financing activities	-156,809	-656
Net increase in cash and cash equivalents	23,734	25,027
Cash and cash equivalents at beginning of year	158,320	179,357
Cash and cash equivalents at end of period	182,054	204,384
Cash paid during the period for:
Interest	3,934	3,316
Income taxes	13,172	16
Non-cash activities:
Transfer of loans receivable to other real estate owned	627
Conversion of stock warrants into common stock		2
Income tax expense related to items of other comprehensive income	-4,123	-2,807
Change in unrealized gain in accumulated other comprehensive income	-12,043	-8,099
Cash dividends declared	($3,513)	($2,225)

Basis_of_Presentation

Basis of Presentation	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Basis of Presentation	Note 1 — Basis of Presentation
	Hanmi Financial Corporation (“Hanmi Financial,” the “Company,” “we,” “us” or “our”) was formed as a holding company of Hanmi Bank (the “Bank”) and registered with the Securities and Exchange Commission under the Act on March 17, 2001. Our primary operations are related to traditional banking activities, including the acceptance of deposits and the lending and investing of money through operation of the Bank.
	On August 31, 2014, Hanmi Financial completed its acquisition of Central Bancorp, Inc., a Texas corporation (“CBI”). See “Note 2 — Acquisition” and “Note 6 — Loans” for accounting policies regarding purchased loans. During the second quarter of 2014, we sold two subsidiaries, Chun-Ha Insurance Services, Inc., a California corporation (“Chun-Ha”), and All World Insurance Services, Inc., a California corporation (“All World”). See “Note 4 — Sale of Insurance Subsidiaries and Discontinued Operations.”
	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, 2015, 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, 2014 (the “2014 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. Actual results could differ from those estimates. Material estimates subject to change include, among other items, the fair value estimates of assets acquired and liabilities assumed in the CBI acquisition as discussed in “Note 2 – Acquisition.” The acquired assets and assumed liabilities of CBI were measured at their estimated fair values. The Company made significant estimates and exercised significant judgment in estimating fair values and accounting for such acquired assets and assumed liabilities.
	Descriptions of our significant accounting policies are included in “Note 1 — Summary of Significant Accounting Policies” in our 2014 Annual Report on Form 10-K. During the second quarter of 2014, we adopted an accounting policy related to accounting for investments in low-income housing tax credit according to Financial Accounting Standards Board (“FASB”) ASU 2014-01, Accounting for Investments in Qualified Affordable Housing Projects. See “Note 3 — Accounting for Investments in Qualified Affordable Housing Projects.”

Acquisition

Acquisition	3 Months Ended
	Mar. 31, 2015
Business Combinations [Abstract]
Acquisition	Note 2 — Acquisition
	Acquisition of Central Bancorp, Inc.
	On August 31, 2014, Hanmi Financial completed its acquisition of CBI, the parent company of United Central Bank (“UCB”). In the merger with CBI, each share of CBI common stock was exchanged for $17.64 per share or $50 million in the aggregate. In addition, Hanmi Financial paid $28.7 million to redeem CBI preferred stock immediately prior to the consummation of the merger. The merger consideration was funded from consolidated cash of Hanmi Financial. At August 31, 2014, CBI had total assets, liabilities and net assets of $1.27 billion, $1.17 billion and $93.3 million, respectively. Total loans and deposits were $297.3 million and $1.1 billion, respectively, at August 31, 2014.
	CBI was headquartered in Garland, Texas and through UCB, operated 23 branch locations within Texas, Illinois, Virginia, New York, New Jersey and California. The combined companies operate as Hanmi Financial Corporation and Hanmi Bank, respectively, with banking operations under the Hanmi Bank brand. Following the acquisition, Hanmi Bank has expanded its geographic presence through a network of 49 branches located throughout the United States. The acquisition was accounted for under the acquisition method of accounting pursuant to ASC 805, Business Combinations. The assets and liabilities, both tangible and intangible, were recorded at their estimated fair values as of the acquisition date. The Company made significant estimates and exercised significant judgment in estimating the fair values and accounting for such acquired assets and assumed liabilities. Such fair values are preliminary estimates and are subject to adjustment for up to one year after the acquisition date or when additional information relative to the closing date fair values becomes available and such information is considered final, whichever is earlier. The fair values are based on provisional valuation estimates of the fair values of the acquired assets and assumed liabilities. The valuation of acquired loans, income taxes and the core deposit intangibles are based on a preliminary estimate and are subject to change as the provisional amounts are finalized. Such changes to the preliminary estimates during the measurement period are recorded as retrospective adjustments to the consolidated financial statements. During the measurement period, the Company identified retrospective adjustments to certain of the provisional amounts recorded that had the net effect of increasing the bargain purchase gain, net of deferred taxes by $8.0 million.
	The following table presents the purchase price allocation reported as of the acquisition date:
		(In thousands)
	Consideration paid:
	CBI stockholders	$	50,000
	Redemption of preferred and cumulative unpaid dividends		28,675
			78,675
	Assets acquired:
	Cash and cash equivalents		197,209
	Securities available for sale		663,497
	Loans		297,272
	Premises and equipment		17,925
	Other real estate owned		25,952
	Income tax assets, net		12,011
	Core deposit intangible		2,213
	FDIC loss sharing assets		11,413
	Bank-owned life insurance		18,296
	Servicing assets		7,497
	Other assets		14,636
	Total assets acquired		1,267,921
	Liabilities assumed:
	Deposits		1,098,997
	Subordinated debentures		18,473
	Rescinded stock obligation		15,485
	FHLB advances		10,000
	Servicing liabilities		6,039
	Other liabilities		25,675
	Total liabilities assumed		1,174,669
	Total identifiable net assets	$	93,252
	Bargain purchase gain, net of deferred taxes	$	14,577
	The provisional application of the acquisition method of accounting resulted in a bargain purchase gain of $14.6 million. The operations of CBI are included in our operating results since the acquisition date. Acquisition-related costs of $6.6 million for the year ended December 31, 2014 were expensed as incurred as merger and integration costs. These expenses are comprised primarily of system conversion costs and professional fees. For the three months ended March 31, 2015, acquisition-related costs of $1.6 million were expensed as incurred as merger and integration costs. The $297.3 million estimated fair value of loans acquired from CBI was determined by utilizing a discounted cash flow methodology considering credit and interest rate risk. Cash flows were determined by estimating future credit losses and the rate of prepayments. Projected monthly cash flows were then discounted to present value based on a current market rate for similar loans. There was no carryover of CBI’s allowance for loan losses associated with the loans acquired as loans were initially recorded at fair value.
	The following table summarizes the accretable yield on the purchased credit impaired loans acquired from the CBI merger at August 31, 2014.
		(In thousands)
	Undiscounted contractual cash flows	$	93,623
	Nonaccretable discount		(17,421	)
	Undiscounted cash flow to be collected		76,202
	Estimated fair value of PCI loans		65,346
	Accretable yield	$	10,856
	The core deposit intangible (“CDI”) of $2.2 million was recognized for the core deposits acquired from CBI. The CDI is amortized over its useful life of approximately ten years on an accelerated basis and reviewed for impairment at least quarterly. The amortization expense for the three months ended March 31, 2015 was $95,000.
	The fair value of savings and transactional deposit accounts was assumed to approximate the carrying value as these accounts have no stated maturity and are payable on demand. Expected cash flows were utilized for the fair value calculation of the certificates of deposit based on the contractual terms of the certificates of deposit and the cash flows were discounted based on a current market rate for certificates of deposit with corresponding maturities. The premium for certificates of deposit was $7.4 million with $1.6 million amortized for the three months ended March 31, 2015.
	The fair value of subordinated debentures was determined by estimating projected future cash flows and discounting them at a market rate of interest. A discount of $8.3 million was recognized for subordinated debentures, which will be amortized over their contractual term. The amortization for the three months ended March 31, 2015 was $38,000.
	Unaudited Pro Forma Results of Operations
	The following table presents our unaudited pro forma results of operations for the periods presented as if the CBI acquisition had been completed on January 1, 2014. The unaudited pro forma results of operations include the historical accounts of Hanmi Financial and CBI and pro forma adjustments as may be required, including the amortization of intangibles with definite lives and the amortization or accretion of any premiums or discounts arising from fair value adjustments for assets acquired and liabilities assumed. The unaudited pro forma information is intended for informational purposes only and is not necessarily indicative of our future operating results or operating results that would have occurred had the CBI acquisition been completed at the beginning of 2014. No assumptions have been applied to the pro forma results of operations regarding possible revenue enhancements, expense efficiencies or asset dispositions.
		Three Months Ended March 31,
		2015			2014
		(In thousands, except per share data)
	Pro forma revenues (net interest income plus noninterest income)	$	53,531		$	56,245
	Pro forma net income from continuing operations	$	12,611		$	16,280
	Pro forma earnings per share from continuing operations:
	Basic	$	0.4		$	0.51
	Diluted	$	0.39		$	0.51

Accounting_for_Investments_in_

Accounting for Investments in Qualified Affordable Housing Projects	3 Months Ended
	Mar. 31, 2015
Accounting Changes and Error Corrections [Abstract]
Accounting for Investments in Qualified Affordable Housing Projects	Note 3 — Accounting for Investments in Qualified Affordable Housing Projects
	The Bank invests in qualified affordable housing projects (low income housing) and previously accounted for them under the equity method of accounting. The Bank recognized its share of partnership losses in other operating expenses with the tax benefits recognized in the income tax provision. In January 2014, the FASB issued ASU 2014-01, Accounting for Investments in Qualified Affordable Housing Projects, which amends ASC 323 to provide the ability to elect the proportional amortization method with the amortization expense and tax benefits recognized through the income tax provision. This ASU is effective for the annual period beginning after December 15, 2014, with early adoption being permitted. The Bank elected to early adopt the provisions of the ASU in the second quarter of 2014 and elected the proportional amortization method as retrospective transition. This accounting change in the amortization methodology resulted in changes to account for amortization recognized in prior periods, which impacted the balance of tax credit investments and related tax accounts. The investment amortization expense is presented as a component of the income tax provision.
	The cumulative effect of the retrospective application of this accounting principle as of January 1, 2012 was a negative $1.1 million. Net incomes for the three months ended March 31, 2014 decreased $44,000 due to the change in accounting principle.
	The following tables present the effect of the retrospective application of this change in accounting principle on the Company’s Consolidated Balance Sheets, Statements of Income and Statement of Cash Flows for the respective periods:
	Hanmi Financial Corporations and Subsidiaries
	Consolidated Balance Sheet (Unaudited)
		As of March 31, 2014
		As Previously			Effect of Change in			As Adjusted
		Reported			Accounting Principle
		(In thousands)
	Assets
	Cash and cash equivalents	$	204,384		$	—		$	204,384
	Securities available for sale		520,990			—			520,990
	Loans receivable		2,221,520			—			2,221,520
	Income tax assets		53,227			273			53,500
	Other assets		96,841			(1,477	)		95,364
	Total assets	$	3,096,962		$	(1,204	)	$	3,095,758
	Liabilities and stockholders’ equity
	Liabilities	$	2,682,247		$	—		$	2,682,247
	Stockholders’ equity		414,715			(1,204	)		413,511
	Total liabilities and stockholders’ equity	$	3,096,962		$	(1,204	)	$	3,095,758
	Hanmi Financial Corporations and Subsidiaries
	Consolidated Statements of Income (Unaudited)
		As Previously			Effect of Change in			As Adjusted
		Reported			Accounting Principle
		(In thousands, except per share data)
	For the Three Months Ended March 31, 2014
	Interest and dividend income	$	30,367		$	—		$	30,367
	Interest expense		3,269			—			3,269
	Negative provision for credit losses		(3,300	)		—			(3,300	)
	Net interest income		30,398			—			30,398
	Noninterest income		6,214			—			6,214
	Noninterest expense		17,961			(162	)		17,799
	Income before provision for income taxes		18,651			162			18,813
	Provision for income taxes		7,638			206			7,844
	Income from continuing operations	$	11,013		$	(44	)	$	10,969
	Earnings per share from continuing operations
	Basic	$	0.35		$	—		$	0.35
	Diluted	$	0.35		$	(0.01	)	$	0.34
	Hanmi Financial Corporations and Subsidiaries
	Consolidated Statement of Cash Flows (Unaudited)
		As Previously			Effect of Change in			As Adjusted
		Reported			Accounting Principle
		(In thousands)
	For the Three Months Ended March 31, 2014
	Cash flows from operating activities:
	Net income	$	11,035		$	(44	)	$	10,991
	Total adjustment in net income		12,230			44			12,274
	Net cash provided by operating activities		23,265			—			23,265
	Cash flows from investing activities:
	Net cash provided by investing activities		2,418			—			2,418
	Cash flows from financing activities:
	Net cash used in financing activities		(656	)		—			(656	)
	Net increase in cash and cash equivalents		25,027			—			25,027
	Cash and cash equivalents at beginning of period		179,357			—			179,357
	Cash and cash equivalents at end of period	$	204,384		$	—		$	204,384
	The Bank determined that there were no events or changes in circumstances indicating that it is more likely than not that the carrying amount of the investment will not be realized. Therefore, no impairment was recognized as of March 31, 2015 or December 31, 2014. The investment in low income housing was $20.7 million and $21.3 million as of March 31, 2015 and December 31, 2014, respectively. The Bank’s unfunded commitments related to low income housing investments were $9.9 million and $11.9 million as of March 31, 2015 and December 31, 2014, respectively. The Bank recognized $584,000 and $171,000 as a component of income tax expense during the three months ended March 31, 2015 and 2014, respectively, and tax credits and other benefits received from the tax expenses were $829,000 and $255,000 during the three months ended March 31, 2015 and 2014, respectively.

Sale_of_Insurance_Subsidiaries

Sale of Insurance Subsidiaries and Discontinued Operations	3 Months Ended
	Mar. 31, 2015
Discontinued Operations and Disposal Groups [Abstract]
Sale of Insurance Subsidiaries and Discontinued Operations	Note 4 — Sale of Insurance Subsidiaries and Discontinued Operations
	In June 2014, Hanmi Financial sold its insurance subsidiaries, Chun-Ha and All World, and entered into a stock purchase agreement for their sale. The subsidiaries were classified as held for sale in April 2014 and accounted for as discontinued operations. The operations and cash flows of the businesses have been eliminated and in accordance with the provisions of ASC 205, Presentation of Financial Statements, the results are reported as discontinued operations for all periods presented.
	Hanmi Financial completed the sale of its two insurance subsidiaries to Chunha Holding Corporation on June 30, 2014 when total assets and net assets of Chun-Ha and All World were $5.6 million and $3.3 million as of June 30, 2014, respectively. The total sales price was $3.5 million, of which $2.0 million was paid upon signing. The remaining $1.5 million will be payable in three equal installments on each anniversary of the closing date through June 30, 2017.
	The sale resulted in a $51,000 gain, offset by a $470,000 capital gain tax, a $14,000 operating loss and an $11,000 income tax expense. Consequently, the net loss from discontinued operations for the second quarter of 2014 was $444,000, or $0.01 per diluted share. For the three months ended March 31, 2014, the discontinued operations generated noninterest income, primarily in the line item for insurance commissions, of $1.4 million and incurred noninterest expense of $1.4 million in various line items.
	Summarized financial information for our discontinued operations related to Chun-Ha and All World are as follows:
		March 31,
		2014
		(In thousands)
	Cash and cash equivalents	$	1,628
	Premises and equipment, net		73
	Other intangible assets, net		1,130
	Other assets		2,764
	Total assets	$	5,595
	Income tax payable	$	1,319
	Accrued expenses and other liabilities		1,785
	Total liabilities	$	3,104
	Net assets of discontinued operations	$	2,491
		Three Months
		Ended March 31,
		2014
		(In thousands)
	Noninterest income	$	37
	Provision for income taxes		15
	Net income from discontinued operations	$	22

Investment_Securities

Investment Securities	3 Months Ended
	Mar. 31, 2015
Investments, Debt and Equity Securities [Abstract]
Investment Securities	Note 5 — Investment Securities
	The following is a summary of investment securities available for sale as of March 31, 2015 and December 31, 2014:
			Amortized			Gross		Gross		Estimated
			Cost			Unrealized		Unrealized		Fair
						Gain		Loss		Value
			(In thousands)
	March 31, 2015
	Mortgage-backed securities (1) (2)		$	485,112		$	8,329	$	545	$	492,896
	Collateralized mortgage obligations (1)			164,163			1,719		477		165,405
	U.S. government agency securities			63,967			12		624		63,355
	SBA loan pool securities			75,236			70		279		75,027
	Municipal bonds-tax exempt			3,604			72		—		3,676
	Municipal bonds-taxable			16,562			561		81		17,042
	Corporate bonds			17,018			14		48		16,984
	U.S. treasury securities			162			1		—		163
	Other securities			22,916			260		76		23,100
	Equity securities			450			—		34		416
	Total securities available for sale		$	849,190		$	11,038	$	2,164	$	858,064
	December 31, 2014
	Mortgage-backed securities (1) (2)		$	571,678		$	2,811	$	1,203	$	573,286
	Collateralized mortgage obligations (1)			188,704			417		1,074		188,047
	U.S. government agency securities			129,857			172		1,822		128,207
	SBA loan pool securities			109,983			52		588		109,447
	Municipal bonds-tax exempt			4,319			71		—		4,390
	Municipal bonds-taxable			16,615			398		91		16,922
	Corporate bonds			17,018			2		72		16,948
	U.S. treasury securities			163			—		—		163
	Other securities			22,916			57		80		22,893
	Equity securities			450			—		36		414
	Total securities available for sale		$	1,061,703		$	3,980	$	4,966	$	1,060,717
	(1)	Collateralized by residential mortgages and guaranteed by U.S. government sponsored entities
	(2)	A portion of the mortgage-backed securities is comprised of home mortgage-backed securities backed by home equity conversion mortgages
	The amortized cost and estimated fair value of investment securities as of March 31, 2015, by contractual maturity, are shown below. Although mortgage-backed securities and collateralized mortgage obligations have contractual maturities through 2064, expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.
			Available for Sale
			Amortized			Estimated
			Cost			Fair Value
			(In thousands)
	Within one year		$	11,995		$	11,948
	Over one year through five years			11,341			11,363
	Over five years through ten years			88,960			89,001
	Over ten years			64,253			63,935
	Mortgage-backed securities			485,112			492,896
	Collateralized mortgage obligations			164,163			165,405
	Other securities			22,916			23,100
	Equity securities			450			416
	Total		$	849,190		$	858,064
	FASB ASC 320, Investments – Debt and Equity Securities, requires us to periodically evaluate our investments for other-than-temporary impairment (“OTTI”). There was no OTTI charge during the three months ended March 31, 2015.
	Gross unrealized losses on investment 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, 2015 and December 31, 2014:
			Holding Period
			Less Than 12 Months							12 Months or More						Total
			Gross			Estimated		Number		Gross		Estimated		Number		Gross		Estimated		Number
			Unrealized			Fair		of		Unrealized		Fair		of		Unrealized		Fair		of
			Loss			Value		Securities		Loss		Value		Securities		Loss		Value		Securities
			(In thousands, except number of securities)
	March 31, 2015
	Mortgage-backed securities		$	88		$	29,430		13	$	457	$	23,906		9	$	545	$	53,336		22
	Collateralized mortgage obligations			51			34,752		9		426		30,146		12		477		64,898		21
	U.S. government agency securities			127			23,864		9		497		30,480		10		624		54,344		19
	SBA loan pool securities			12			14,781		3		267		11,837		4		279		26,618		7
	Municipal bonds-taxable			2			1,517		2		79		802		1		81		2,319		3
	Corporate bonds			—			—		—		48		7,947		2		48		7,947		2
	Other securities			—			—		—		76		949		3		76		949		3
	Equity Securities			34			216		1		—		—		—		34		216		1
	Total		$	314		$	104,560		37	$	1,850	$	106,067		41	$	2,164	$	210,627		78
December 31, 2014
Mortgage-backed securities		$	288		$	102,704		21	$	915	$	50,625		19	$	1,203	$	153,329		40
Collateralized mortgage obligations			350			78,191		21		724		33,308		13		1,074		111,499		34
U.S. government agency securities			—			5,000		1		1,822		73,142		26		1,822		78,142		27
SBA loan pool securities			155			85,062		15		433		11,975		4		588		97,037		19
Municipal bonds-taxable			—			—		—		91		5,538		5		91		5,538		5
Corporate bonds			4			5,021		1		68		7,925		2		72		12,946		3
Other securities			—			—		—		80		1,945		4		80		1,945		4
Equity Securities			36			214		1		—		—		—		36		214		1
Total		$	833		$	276,192		60	$	4,133	$	184,458		73	$	4,966	$	460,650		133
All individual securities that have been in a continuous unrealized loss position for 12 months or longer as of March 31, 2015 and December 31, 2014 had investment grade ratings upon purchase. The issuers of these securities have not established any cause for default on these securities and the various rating agencies have reaffirmed these securities’ long-term investment grade status as of March 31, 2015 and December 31, 2014. These securities have fluctuated in value since their purchase dates as market interest rates have fluctuated.
FASB ASC 320 requires other-than-temporarily impaired investment securities to be written down when fair value is below amortized cost in circumstances where: (1) an entity has the intent to sell a security; (2) it is more likely than not that an entity will be required to sell the security before recovery of its amortized cost basis; or (3) an entity does not expect to recover the entire amortized cost basis of the security. If an entity intends to sell a security or if it is more likely than not the entity will be required to sell the security before recovery, an OTTI write-down is recognized in earnings equal to the entire difference between the security’s amortized cost basis and its fair value. If an entity does not intend to sell the security or it is not more likely than not that it will be required to sell the security before recovery, the OTTI write-down is separated into an amount representing credit loss, which is recognized in earnings, and the amount related to all other factors, which is recognized in other comprehensive income.
The Company does not intend to sell these securities and it is more likely than not that we will not be required to sell the investments before the recovery of its amortized cost basis. In addition, the unrealized losses on municipal and corporate bonds are not considered other-than-temporarily impaired, as the bonds are rated investment grade and there are no credit quality concerns with the issuers. Interest payments have been made as scheduled, and management believes this will continue in the future and that the bonds will be repaid in full as scheduled. Therefore, in management’s opinion, all securities that have been in a continuous unrealized loss position for the past 12 months or longer as of March 31, 2015 and December 31, 2014 were not other-than-temporarily impaired, and therefore, no impairment charges as of March 31, 2015 and December 31, 2014 were warranted.
Realized gains and losses on sales of investment securities and proceeds from sales of investment securities were as follows for the periods indicated:
		Three Months Ended March 31,
		2015			2014
		(In thousands)
Gross realized gains on sales of investment securities		$	2,194		$	1,421
Gross realized losses on sales of investment securities			(10	)		—
Net realized gains on sales of investment securities		$	2,184		$	1,421
Proceeds from sales of investment securities		$	176,848		$	85,234
For the three months ended March 31, 2015, there was a $2.2 million gain in earnings resulting from the sale of investment securities that had previously been recorded as net unrealized gains of $535,000 in comprehensive income. For the three months ended March 31, 2014, there was a $1.4 million net gain in earnings resulting from the sale of investment securities that had previously been recorded as net unrealized gains of $59,000 in comprehensive income.
Investment securities available for sale with market values of $73.5 million and $76.2 million as of March 31, 2015 and December 31, 2014, respectively, were pledged to secure FHLB advances, public deposits and for other purposes as required or permitted by law.

Loans

Loans	3 Months Ended
	Mar. 31, 2015
Receivables [Abstract]
Loans	Note 6 — Loans
	The loan portfolio includes originated and purchased loans. Loans are originated by the Company with the intent to hold them for investment and are stated at the principal amount outstanding, net of unearned income. Unearned income includes deferred unamortized nonrefundable loan fees and direct loan origination costs. Net deferred fees or costs are recognized as an adjustment to interest income over the contractual life of the loans using the effective interest method or taken into income when the related loans are paid off or sold. The amortization of loan fees or costs is discontinued when a loan is placed on nonaccrual status. Interest income is recorded on an accrual basis in accordance with the terms of the respective loan and includes prepayment penalties.
	Purchased loans, which are loans we have acquired through our acquisition of other banks, are stated at the principal amount outstanding, net of unearned discounts or unamortized premiums. All loans acquired in our acquisitions are initially measured and recorded at their fair value on the acquisition date. A component of the initial fair value measurement is an estimate of the credit losses over the life of the purchased loans. Purchased loans are also evaluated for impairment as of the acquisition date and are accounted for as “acquired non-impaired” or “purchased credit impaired” loans.
	Acquired non-impaired loans are those loans for which there was no evidence of credit deterioration at their acquisition date and it was probable that we would be able to collect all contractually required payments. Acquired non-impaired loans, together with originated loans, are referred to as non-purchased credit impaired (“Non-PCI”) loans. Purchase discount or premium on acquired non-impaired loans is recognized as an adjustment to interest income over the contractual life of such loans using the effective interest method or taken into income when the related loans are paid off or sold.
	Purchased credit impaired (“PCI”) loans are accounted for in accordance with ASC Subtopic 310-30, “Loans and Debt Securities Acquired with Deteriorated Credit Quality.” A purchased loan is deemed to be credit impaired when there is evidence of credit deterioration since its origination and it is probable at the acquisition date that we would be unable to collect all contractually required payments. We apply PCI loan accounting when we acquire loans deemed to be impaired.
	For PCI loans, at the time of acquisition we (i) calculated the contractual amount and timing of undiscounted principal and interest payments (the “undiscounted contractual cash flows”) and (ii) estimated the amount and timing of undiscounted expected principal and interest payments (the “undiscounted expected cash flows”). The difference between the undiscounted contractual cash flows and the undiscounted expected cash flows is the nonaccretable difference. The nonaccretable difference represents an estimate of the loss exposure of principal and interest related to the PCI loan portfolios; such amount is subject to change over time based on the performance of such loans. The carrying value of PCI loans is reduced by payments received, both principal and interest, and increased by the portion of the accretable yield recognized as interest income.
	The excess of expected cash flows at acquisition over the initial fair value of acquired impaired loans is referred to as the “accretable yield” and is recorded as interest income over the estimated life of the loans using the effective yield. If estimated cash flows are indeterminable, the recognition of interest income will cease to be recognized.
	At acquisition, the Company may aggregate PCI loans into pools having common credit risk characteristics such as product type, geographic location and risk rating. Increases in expected cash flows over those previously estimated increase the accretable yield and are recognized as interest income prospectively. Decreases in the amount and changes in the timing of expected cash flows compared to those previously estimated decrease the accretable yield and usually result in a provision for loan losses and the establishment of an allowance for loan losses. As the accretable yield increases or decreases from changes in cash flow expectations, the offset is a decrease or increase to the nonaccretable difference. The accretable yield is measured at each financial reporting date based on information then currently available and represents the difference between the remaining undiscounted expected cash flows and the current carrying value of the loans.
	The Board of Directors and management review and approve the Bank’s loan policy and procedures on a regular basis to reflect issues such as regulatory and organizational structure changes, strategic planning revisions, concentrations of credit, loan delinquencies and nonperforming loans, problem loans, and policy adjustments.
	Real estate loans are loans secured by liens or interest in real estate, to provide purchase, construction, and refinance on real estate properties. Commercial and industrial loans consist of commercial term loans, commercial lines of credit, and Small Business Administration (“SBA”) loans. Consumer loans consist of auto loans, personal loans, and home equity lines of credit. We maintain management loan review and monitoring departments that review and monitor pass graded loans as well as problem loans to prevent further deterioration.
	The majority of the Bank’s loan portfolio consists of commercial real estate, and commercial and industrial loans. The Bank has been diversifying and monitoring commercial real estate loans based on property types, tightening underwriting standards and portfolio liquidity and management, and has not exceeded certain specified limits set forth in the Bank’s loan policy.
	Loans Receivable
	Loans receivable consisted of the following as of the dates indicated:
			March 31, 2015									December 31, 2014
			Non-PCI Loans			PCI Loans			Total			Non-PCI Loans			PCI Loans			Total
			(In thousands)
	Real estate loans:
	Commercial property (1)
	Retail		$	679,938		$	10,565		$	690,503		$	675,072		$	8,535		$	683,607
	Hotel/motel			481,960			11,720			493,680			454,499			7,682			462,181
	Gas station			346,798			6,441			353,239			362,240			7,745			369,985
	Other			820,707			10,174			830,881			842,126			5,796			847,922
	Construction			15,123			—			15,123			9,517			—			9,517
	Residential property			154,797			1,716			156,513			120,932			14,371			135,303
	Total real estate loans			2,499,323			40,616			2,539,939			2,464,386			44,129			2,508,515
	Commercial and industrial loans:
	Commercial term			116,252			281			116,533			116,073			327			116,400
	Commercial lines of credit			97,761			—			97,761			93,860			—			93,860
	International loans			36,338			—			36,338			38,929			—			38,929
	Total commercial and industrial loans			250,351			281			250,632			248,862			327			249,189
	Consumer loans			25,942			44			25,986			27,512			45			27,557
	Total gross loans			2,775,616			40,941			2,816,557			2,740,760			44,501			2,785,261
	Allowance for loans losses			(51,515	)		(1,436	)		(52,951	)		(51,640	)		(1,026	)		(52,666	)
	Deferred loan costs			3,474			—			3,474			3,237			—			3,237
	Loans receivable, net		$	2,727,575		$	39,505		$	2,767,080		$	2,692,357		$	43,475		$	2,735,832
	(1)	Includes owner-occupied property loans of $1.14 billion and $1.12 billion as of March 31, 2015 and December 31, 2014, respectively.
	Accrued interest on loans receivable was $6.2 million and $6.4 million at March 31, 2015 and December 31, 2014, respectively. At March 31, 2015 and December 31, 2014, loans receivable totaling $802.0 million and $840.0 million, respectively, were pledged to secure advances from the FHLB and the FRB’s Federal Reserve discount window.
	The following table details the information on the sales and reclassifications of loans receivable to loans held for sale (excluding PCI loans) by portfolio segment for the three months ended March 31, 2015 and 2014:
			Real Estate			Commercial			Consumer			Total
						and Industrial						Non-PCI
			(In thousands)
	March 31, 2015
	Balance at beginning of period		$	3,323		$	2,128		$	—		$	5,451
	Origination of loans held for sale			16,927			6,181			—			23,108
	Sales of loans held for sale			(13,014	)		(6,840	)		—			(19,854	)
	Principal payoffs and amortization			(10	)		(18	)		—			(28	)
	Balance at end of period		$	7,226		$	1,451		$	—		$	8,677
	March 31, 2014
	Balance at beginning of period		$	—		$	—		$	—		$	—
	Origination of loans held for sale			6,269			85			—			6,354
	Sales of loans held for sale			(5,874	)		(84	)		—			(5,958	)
	Principal payoffs and amortization			(5	)		(1	)		—			(6	)
	Balance at end of period		$	390		$	—		$	—		$	390
	For the three months ended March 31, 2015, there was no reclassification of Non-PCI loans receivable as Non-PCI loans held for sale, and Non-PCI loans held for sale of $19.9 million were sold. In addition, there was no reclassification from Non-PCI loans held for sale to Non-PCI loans receivable for the three months ended March 31, 2015. For the three months ended March 31, 2014, there was no reclassification of Non-PCI loans receivable as Non-PCI loans held for sale, and Non-PCI loans held for sale of $6.0 million were sold. In addition, there was no reclassification from Non-PCI loans held for sale to Non-PCI loans receivable for the three months ended March 31, 2014.
	Allowance for Loan Losses and Allowance for Off-Balance Sheet Items
	Activity in the allowance for loan losses and allowance for off-balance sheet items was as follows for the periods indicated:
			March 31, 2015									March 31
			Non-PCI Loans			PCI Loans			Total			2014
			(In thousands)
	Allowance for loan losses:
	Balance at beginning of period		$	51,640		$	1,026		$	52,666		$	57,555
	Charge-offs			(34	)		(52	)		(86	)		(1,604	)
	Recoveries on loans previously charged off			1,692			352			2,044			4,251
	Net loan recoveries (charge-offs)			1,658			300			1,958			2,647
(Negative provision) provision charged to operating expense			(1,783	)		110			(1,673	)		(3,609	)
Balance at end of period		$	51,515		$	1,436		$	52,951		$	56,593
Allowance for off-balance sheet items:
Balance at beginning of period		$	1,366		$	—		$	1,366		$	1,248
(Negative provision) provision charged to operating expense			(312	)		—			(312	)		309
Balance at end of period		$	1,054		$	—		$	1,054		$	1,557
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. As of March 31, 2015 and 2014, the allowance for off-balance sheet items amounted to $1.1 million and $1.6 million, respectively. Net adjustments to the allowance for off-balance sheet items are included in the provision for credit losses.
The following table details the information on the allowance for loan losses by portfolio segment for the three months ended March 31, 2015 and 2014:
		Real Estate			Commercial			Consumer			Unallocated			Total
					and Industrial
		(In thousands)
March 31, 2015
Allowance for loan losses on Non-PCI loans:
Beginning balance		$	41,194		$	9,142		$	220		$	1,084		$	51,640
Charge-offs			—			(34	)		—			—			(34	)
Recoveries on loans previously charged off			32			1,660			—			—			1,692
(Negative provision) provision			1,324			(2,982	)		(35	)		(90	)		(1,783	)
Ending balance		$	42,550		$	7,786		$	185		$	994		$	51,515
Ending balance: individually evaluated for impairment		$	3,386		$	1,913		$	—		$	—		$	5,299
Ending balance: collectively evaluated for impairment		$	39,164		$	5,873		$	185		$	994		$	46,216
Non-PCI loans receivable:
Ending balance		$	2,499,323		$	250,351		$	25,942		$	—		$	2,775,616
Ending balance: individually evaluated for impairment		$	33,537		$	11,570		$	1,823		$	—		$	46,930
Ending balance: collectively evaluated for impairment		$	2,465,786		$	238,781		$	24,119		$	—		$	2,728,686
Allowance for loan losses on PCI loans:
Beginning balance		$	895		$	131		$	—		$	—		$	1,026
Charge-offs			(52	)		—			—			—			(52	)
Recoveries on loans previously charged off			—			352			—			—			352
Provision			475			(365	)		—			—			110
Ending balance: acquired with deteriorated credit quality		$	1,318		$	118		$	—		$	—		$	1,436
PCI loans receivable:
Ending balance: acquired with deteriorated credit quality		$	40,633		$	282		$	44		$	—		$	40,959
March 31, 2014
Allowance for loan losses on Non-PCI loans :
Beginning balance		$	43,550		$	11,287		$	1,427		$	1,291		$	57,555
Charge-offs			(1,128	)		(422	)		(54	)		—			(1,604	)
Recoveries on loans previously charged off			2,918			1,321			12			—			4,251
Provision (negative provision)			(1,110	)		(1,761	)		(752	)		14			(3,609	)
Ending balance		$	44,230		$	10,425		$	633		$	1,305		$	56,593
Ending balance: individually evaluated for impairment		$	1,029		$	3,973		$	117		$	—		$	5,119
Ending balance: collectively evaluated for impairment		$	43,201		$	6,452		$	516		$	1,305		$	51,474
Non-PCI loans receivable:
Ending balance		$	2,027,914		$	219,102		$	29,356		$	—		$	2,276,372
Ending balance: individually evaluated for impairment		$	34,294		$	14,503		$	1,553		$	—		$	50,350
Ending balance: collectively evaluated for impairment		$	1,993,620		$	204,599		$	27,803		$	—		$	2,226,022
Credit Quality Indicators
As part of the on-going monitoring of the credit quality of our loan portfolio, we utilize an internal loan grading system to identify credit risk and assign an appropriate grade (from (0) to (8)) for each and every loan in our loan portfolio. A third party loan review is required on an annual basis. Additional adjustments are made when determined to be necessary. The loan grade definitions are as follows:
Pass and Pass-Watch: Pass and pass-watch loans, 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 grading system. It incorporates all performing loans 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 of the debt and result in a Substandard classification. Loans 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, 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 classified as loss, grade (8), is considered uncollectible and of such little value that their continuance as active bank assets is not warranted. This classification does not mean that the loan 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 classified as Loss will be charged off in a timely manner.
Under regulatory guidance, loans graded special mention or worse are considered criticized loans and loans graded substandard or worse are considered classified loans.
As of March 31, 2015 and December 31, 2014, pass/pass-watch, special mention and classified loans (excluding PCI loans), disaggregated by loan class, were as follows:
		Pass/Pass-Watch			Special Mention			Classified			Total
					(In thousands)
March 31, 2015
Real estate loans:
Commercial property
Retail		$	658,292		$	12,141		$	9,505		$	679,938
Hotel/motel			425,710			42,938			13,312			481,960
Gas station			330,319			9,861			6,618			346,798
Other			800,758			9,087			10,862			820,707
Construction			15,123			—			—			15,123
Residential property			152,673			—			2,124			154,797
Commercial and industrial loans:
Commercial term			106,066			1,089			9,097			116,252
Commercial lines of credit			95,482			—			2,279			97,761
International loans			35,987			152			199			36,338
Consumer loans			23,674			121			2,147			25,942
Total Non-PCI loans		$	2,644,084		$	75,389		$	56,143		$	2,775,616
December 31, 2014
Real estate loans:
Commercial property
Retail		$	654,360		$	18,013		$	2,699		$	675,072
Hotel/motel			397,437			46,365			10,697			454,499
Gas station			345,775			8,899			7,566			362,240
Other			822,037			9,543			10,546			842,126
Construction			9,517			—			—			9,517
Residential property			118,688			66			2,178			120,932
Commercial and industrial loans:
Commercial term			106,326			1,225			8,522			116,073
Commercial lines of credit			92,312			993			555			93,860
International loans			36,121			252			2,556			38,929
Consumer loans			25,313			131			2,068			27,512
Total Non-PCI loans		$	2,607,886		$	85,487		$	47,387		$	2,740,760
The following is an aging analysis of gross loans (excluding PCI loans), disaggregated by loan class, as of the dates indicated:
		30-59 Days Past			60-89 Days Past			90 Days or			Total Past Due			Current			Total			Accruing 90
		Due			Due			More Past Due												Days or More
																				Past Due
											(In thousands)
March 31, 2015
Real estate loans:
Commercial property
Retail		$	1,943		$	6,031		$	2,950		$	10,924		$	669,014		$	679,938		$	—
Hotel/motel			2,659			—			3,421			6,080			475,880			481,960			—
Gas station			580			480			4,088			5,148			341,650			346,798			—
Other			1,770			278			3,544			5,592			815,115			820,707			—
Construction			—			—			—			—			15,123			15,123			—
Residential property			—			—			547			547			154,250			154,797			—
Commercial and industrial loans:
Commercial term			(30	)		87			3,062			3,119			113,133			116,252			—
Commercial lines of credit			1,407			—			819			2,226			95,535			97,761			—
International loans			131			—			—			131			36,207			36,338			—
Consumer loans			—			239			348			587			25,355			25,942			—
Total Non-PCI loans		$	8,460		$	7,115		$	18,779		$	34,354		$	2,741,262		$	2,775,616		$	—
December 31, 2014
Real estate loans:
Commercial property
Retail		$	1,554		$	281		$	1,920		$	3,755		$	671,317		$	675,072		$	—
Hotel/motel			1,531			2,340			433			4,304			450,195			454,499			—
Gas station			2,991			1,113			353			4,457			357,783			362,240			—
Other			1,674			2,156			1,142			4,972			837,154			842,126			—
Construction			—			—			—			—			9,517			9,517			—
Residential property			167			—			687			854			120,078			120,932			—
Commercial and industrial loans:
Commercial term			1,107			490			2,847			4,444			111,629			116,073			—
Commercial lines of credit			—			—			227			227			93,633			93,860			—
International loans			200			—			—			200			38,729			38,929			—
Consumer loans			489			349			248			1,086			26,426			27,512			—
Total Non-PCI loans		$	9,713		$	6,729		$	7,857		$	24,299		$	2,716,461		$	2,740,760		$	—
Impaired Loans
Loans are considered impaired when nonaccrual and principal or interest payments have been contractually past due for 90 days or more, unless the loan is both well-collateralized and in the process of collection; or they are classified as Troubled Debt Restructuring (“TDR”) loans 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 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 impairment in accordance with applicable GAAP. Impaired loans are measured based on the present value of expected future cash flows discounted at the loan’s effective interest rate or, as a practical expedient, at the loan’s observable market price or the fair value of the collateral if the loan is collateral dependent, less estimated costs to sell. If the measure of the impaired loan is less than the recorded investment in the loan, the deficiency is either charged off against the allowance for loan losses or we establish a specific allocation in the allowance for loan losses. Additionally, loans that are considered impaired are specifically excluded from the quarterly migration analysis when determining the amount of the allowance for loan losses required for the period.
The allowance for collateral-dependent loans is determined by calculating the difference between the outstanding loan balance and the value of the collateral as determined by recent appraisals. The allowance for collateral-dependent loans varies from loan to loan based on the collateral coverage of the loan at the time of designation as nonperforming. We continue to monitor the collateral coverage, using recent appraisals, on these loans on a quarterly basis and adjust the allowance accordingly.
The following tables provide information on impaired loans (excluding PCI loans), disaggregated by loan class, as of the dates indicated:
		Recorded			Unpaid Principal			With No			With an			Related			Average			Interest
		Investment			Balance			Related			Allowance			Allowance			Recorded			Income
								Allowance			Recorded						Investment			Recognized
								Recorded
								(In thousands)
March 31, 2015
Real estate loans:
Commercial property
Retail		$	5,963		$	6,133		$	3,496		$	2,467		$	189		$	5,990		$	72
Hotel/motel			6,228			6,910			4,974			1,254			2,767			6,272			182
Gas station			7,968			8,608			7,527			441			137			7,993			93
Other			10,291			11,896			9,120			1,171			293			10,254			208
Residential property			3,087			3,242			3,087			—			—			3,102			32
Commercial and industrial loans:
Commercial term			8,147			8,716			3,912			4,235			1,881			8,078			99
Commercial lines of credit			2,092			2,210			442			1,650			8			2,439			7
International loans			1,331			1,331			767			563			24			1,360			—
Consumer loans			1,823			2,005			1,823			—			—			1,830			17
Total Non-PCI loans		$	46,930		$	51,051		$	35,148		$	11,781		$	5,299		$	47,318		$	710
December 31, 2014
Real estate loans:
Commercial property
Retail		$	4,436		$	4,546		$	1,938		$	2,498		$	220		$	5,373		$	251
Hotel/motel			5,835			6,426			4,581			1,254			1,828			4,583			398
Gas station			8,974			9,594			8,526			448			150			11,281			787
Other			10,125			11,591			8,890			1,235			319			10,579			885
Residential property			3,127			3,268			3,127			—			—			2,924			115
Commercial and industrial loans:
Commercial term			7,614			8,133			2,999			4,615			2,443			9,458			566
Commercial lines of credit			466			575			466			—			—			1,205			66
International loans			3,546			3,546			2,628			918			286			1,736			33
Consumer loans			1,742			1,907			1,742			—			—			1,651			59
Total Non-PCI loans		$	45,865		$	49,586		$	34,897		$	10,968		$	5,246		$	48,790		$	3,160
The following is a summary of interest foregone on impaired loans (excluding PCI loans) for the periods indicated:
		Three Months Ended
		March 31			March 31
		2015			2014
		(In thousands)
Interest income that would have been recognized had impaired loans performed in accordance with their original terms		$	740		$	1,213
Less: Interest income recognized on impaired loans			(710	)		(764	)
Interest foregone on impaired loans		$	30		$	449
There were no commitments to lend additional funds to borrowers whose loans are included above.
Nonaccrual Loans
Loans are placed on nonaccrual status when, in the opinion of management, the full timely collection of principal or interest is in doubt. Generally, the accrual of interest is discontinued when principal or interest payments become more than 90 days past due, unless management believes the loan is adequately collateralized and in the process of collection. However, in certain instances, we may place a particular loan on nonaccrual status earlier, depending upon the individual circumstances surrounding the loan’s delinquency. When a loan 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 may be restored to accrual status when principal and interest payments become current and full repayment is expected.
The following table details nonaccrual loans (excluding PCI loans), disaggregated by loan class, as of the dates indicated:
		March 31			December 31
		2015			2014
		(In thousands)
Real estate loans:
Commercial property
Retail		$	3,988		$	2,160
Hotel/motel			4,431			3,835
Gas station			5,023			3,478
Other			5,548			4,961
Residential property			1,537			1,588
Commercial and industrial loans:
Commercial term			5,867			7,052
Commercial lines of credit			1,041			466
Consumer loans			1,823			1,742
Total nonaccrual Non-PCI loans		$	29,258		$	25,282
The following table details nonperforming assets (excluding PCI loans) as of the dates indicated:
		March 31			December 31
		2015			2014
		(In thousands)
Nonaccrual Non-PCI loans		$	29,258		$	25,282
Loans 90 days or more past due and still accruing			—			—
Total nonperforming Non-PCI loans			29,258			25,282
Other real estate owned			12,114			15,790
Total nonperforming assets		$	41,372		$	41,072
As of March 31, 2015, OREOs consisted of nineteen properties with a combined carrying value of $12.1 million. Of the $12.1 million, $11.8 million were OREOs acquired in the CBI acquisition or were obtained as a result of PCI loan collateral foreclosures subsequent to the acquisition date. As of December 31, 2014, OREOs consisted of twenty-five properties with a combined carrying value of $15.8 million. Of the $15.8 million, $15.3 million were OREOs acquired in the CBI acquisition or were obtained as a result of PCI loan collateral foreclosures subsequent to the acquisition date.
Troubled Debt Restructuring
The following table details TDRs (excluding PCI loans), disaggregated by concession type and by loan type, as of March 31, 2015 and December 31, 2014:
		Nonaccrual TDRs															Accrual TDRs
		Deferral			Deferral			Reduction			Extension			Total			Deferral			Deferral		Reduction		Extension		Total
		of			of			of			of						of			of		of		of
		Principal			Principal			Principal			Maturity						Principal			Principal		Principal		Maturity
					and			and												and		and
					Interest			Interest												Interest		Interest
														(In thousands)
March 31, 2015
Real estate loans:
Commercial property
Retail		$	—		$	—		$	—		$	2,003		$	2,003		$	304		$	—	$	—	$	—	$	304
Hotel/motel			1,073			(64	)		—			—			1,009			1,802			—		—		—		1,802
Gas station			3,033			—			—			—			3,033			352			—		—		—		352
Other			932			1,766			407			20			3,125			2,318			—		771		1,373		4,462
Residential property			729			—			—			—			729			—			—		—		306		306
Commercial and industrial loans:
Commercial term			12			(3	)		2,507			1,632			4,148			53			223		481		1,533		2,290
Commercial lines of credit			220			—			124			98			442			1,650			—		—		—		1,650
International loans			—			—			—			—			—			—			—		199		—		199
Consumer loans			—			—			127			—			127			—			—		—		—		—
Total Non-PCI loans		$	5,999		$	1,699		$	3,165		$	3,753		$	14,616		$	6,479		$	223	$	1,451	$	3,212	$	11,365
December 31, 2014
Real estate loans:
Commercial property
Retail		$	—		$	—		$	—		$	2,032		$	2,032		$	306		$	—	$	—	$	—	$	306
Hotel/motel			1,115			(53	)		—			—			1,062			1,807			—		—		—		1,807
Gas station			1,075			—			—			—			1,075			2,335			—		—		—		2,335
Other			943			1,498			433			24			2,898			2,343			—		782		1,372		4,497
Residential property			742			—			—			—			742			—			—		—		308		308
Commercial and industrial loans:
Commercial term			14			(1	)		2,556			1,481			4,050			57			226		567		1,358		2,208
Commercial lines of credit			227			—			126			113			466			2,156			—		—		—		2,156
International loans			—			—			—			—			—			—			—		200		—		200
Consumer loans			—			—			131			—			131			—			—		—		—		—
Total Non-PCI loans		$	4,116		$	1,444		$	3,246		$	3,650		$	12,456		$	9,004		$	226	$	1,549	$	3,038	$	13,817
As of March 31, 2015 and December 31, 2014, total TDRs, excluding loans held for sale, were $26.0 million and $26.3 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, 2015 and December 31, 2014, TDRs, excluding loans held for sale, were subjected to specific impairment analysis, and $2.2 million and $2.9 million, respectively, of reserves relating to these loans were included in the allowance for loan losses.
The following table details TDRs (excluding PCI loans), disaggregated by loan class, for the three months ended March 31, 2015 and 2014:
		March 31, 2015									March 31, 2014
		Number of			Pre-Modification			Post-Modification			Number of			Pre-Modification			Post-Modification
		Loans			Outstanding			Outstanding			Loans			Outstanding			Outstanding
					Recorded			Recorded						Recorded			Recorded
					Investment			Investment						Investment			Investment
					(In thousands, except number of loans)
Real estate loans:
Commercial property
Other (1)			—		$	—		$	—			1		$	943		$	943
Commercial and industrial loans:
Commercial term (2)			4			543			508			5			829			788
Commercial lines of credit (3)			—			—			—			1			250			242
Total Non-PCI loans			4		$	543		$	508			7		$	2,022		$	1,973
(1)	Includes a modification of $943,000 through a payment deferral for the three months ended March 31, 2014.
(2)	Includes modifications of $508,000 through extensions of maturity for the three months ended March 31, 2015, and modifications of $491,000 through a payment deferral, $107,000 through reductions of principal or accrued interest and $190,000 through an extension of maturity for the three months ended March 31, 2014
(3)	Includes a modification of $242,000 through a payment deferral for the three months ended March 31, 2014.
During the three months ended March 31, 2015, we restructured monthly payments on four loans, with a net carrying value of $508,000 as of March 31, 2015, through re-amortization. For the restructured loans on accrual status, we determined that, based on the financial capabilities of the borrowers at the time of the loan restructuring and the borrowers’ past performance in the payment of debt service under the previous loan terms, performance and collection under the revised terms are probable.
The following table details TDRs (excluding PCI loans) that defaulted subsequent to the modifications occurring within the previous twelve months, disaggregated by loan class, for the three months ended March 31, 2015 and 2014, respectively:
		Three Months Ended
		March 31, 2015						March 31, 2014
		Number of			Recorded			Number of			Recorded
		Loans			Investment			Loans			Investment
		(In thousands, except number of loans)
Real estate loans:
Commercial property
Retail			1		$	1,832			1		$	310
Hotel/motel			—			—			1			1,000
Gas station			1			1,990			1			87
Other			1			379			2			481
Commercial and industrial loans:
Commercial term			—			—			1			53
Commercial lines of credit			1			124			—			—
Consumer loans			—			—			1			149
Total Non-PCI loans			4		$	4,325			7		$	2,080
Purchased Credit Impaired Loans
As part of the acquisition of CBI, the Company purchased loans for which there was, at acquisition, evidence of deterioration of credit quality subsequent to origination and it was probable, at acquisition, that all contractually required payments would not be collected. The following table summarizes the changes in carrying value of PCI loans during the year ended March 31, 2015:
		Carrying			Accretable
		Amount			Yield
		(In thousands)
Balance at January 1, 2015		$	43,475		$	(11,025	)
Accretion			843			843
Payments received			(5,425	)		—
Disposal/transfer to OREO			722			—
Changes in expected cash flows, net			—			376
Provision for credit losses			(110	)		—
Balance at March 31, 2015		$	39,505		$	(9,806	)
As of March 31, 2015, pass/pass-watch, special mention and classified PCI loans, disaggregated by loan class, were as follows:
		Pass/Pass-Watch			Special Mention			Classified			Total			Allowance			Total
																	PCI Loans
								(In thousands)
March 31, 2015
Real estate loans:
Commercial property
Retail		$	1,201		$	168		$	9,196		$	10,565		$	404		$	10,161
Hotel/motel			252			—			11,468			11,720			146			11,574
Gas station			—			178			6,263			6,441			555			5,886
Other			—			—			10,174			10,174			167			10,007
Residential property			—			—			1,716			1,716			46			1,670
Commercial and industrial loans:
Commercial term			—			—			281			281			118			163
Consumer loans			—			—			44			44			—			44
Total PCI loans		$	1,453		$	346		$	39,142		$	40,941		$	1,436		$	39,505
December 31, 2014
Real estate loans:
Commercial property
Retail		$	1,207		$	219		$	7,109		$	8,535		$	401		$	8,134
Hotel/motel			—			—			7,682			7,682			99			7,583
Gas station			—			1,242			6,503			7,745			302			7,443
Other			—			—			5,796			5,796			65			5,731
Residential property			—			—			14,371			14,371			28			14,343
Commercial and industrial loans:
Commercial term			—			—			327			327			131			196
Consumer loans			—			—			45			45			—			45
Total PCI loans		$	1,207		$	1,461		$	41,833		$	44,501		$	1,026		$	43,475
Loans accounted for as PCI are generally considered accruing and performing loans as the accretable discount is accreted to interest income over the estimated life of the loan when cash flows are reasonably estimable. Accordingly, PCI loans that are contractually past due are still considered to be accruing and performing loans. If the timing and amount of future cash flows is not reasonably estimable, the loans are classified as nonaccrual loans and interest income is not recognized until the timing and amount of future cash flows can be reasonably estimated. As of March 31, 2015 and December 31, 2014, we had no PCI loans on nonaccrual status and included in the delinquency table below.
The following table presents a summary of the borrowers’ underlying payment status of PCI loans as of the dates indicated:
		30-59 Days Past			60-89 Days Past			90 Days or			Total Past Due			Current			Total			Allowance		Total
		Due			Due			More Past Due												Amount		PCI Loans
											(In thousands)
March 31, 2015
Real estate loans:
Commercial property
Retail		$	13		$	—		$	6,424		$	6,437		$	4,128		$	10,565		$	404	$	10,161
Hotel/motel			—			—			6,801			6,801			4,919			11,720			146		11,574
Gas station			831			—			3,868			4,699			1,742			6,441			555		5,886
Other			62			—			9,719			9,781			393			10,174			167		10,007
Residential property			—			—			1,056			1,056			660			1,716			46		1,670
Commercial and industrial loans:
Commercial term			—			6			110			116			165			281			118		163
Consumer loans			—			16			28			44			—			44			—		44
Total PCI loans		$	906		$	22		$	28,006		$	28,934		$	12,007		$	40,941		$	1,436	$	39,505
December 31, 2014
Real estate loans:
Commercial property
Retail		$	93		$	287		$	3,815		$	4,195		$	4,340		$	8,535		$	401	$	8,134
Hotel/motel			312			—			2,490			2,802			4,880			7,682			99		7,583
Gas station			1,139			1,053			3,178			5,370			2,375			7,745			302		7,443
Other			—			—			5,235			5,235			561			5,796			65		5,731
Residential property			—			—			13,594			13,594			777			14,371			28		14,343
Commercial and industrial loans:
Commercial term			30			—			135			165			162			327			131		196
Consumer loans			—			17			28			45			—			45			—		45
Total PCI loans		$	1,574		$	1,357		$	28,475		$	31,406		$	13,095		$	44,501		$	1,026	$	43,475
Servicing Assets and liabilities
The changes in servicing assets for the three months ended March 31, 2015 and 2014 were as follows:
		Three Months Ended March 31,
		2015			2014
		(In thousands)
Servicing assets:
Balance at beginning of period		$	13,773		$	6,833
Addition related to sale of SBA loans			617			200
Amortization			(1,069	)		(474	)
Balance at end of period		$	13,321		$	6,559
Servicing liabilities:
Balance at beginning of period		$	5,971		$	33
Amortization			(442	)		(3	)
Balance at end of period		$	5,529		$	30
At March 31, 2015 and 2014, we serviced loans sold to unaffiliated parties in the amounts of $486.1 million and $340.5 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 being serviced were SBA loans.
FDIC Loss Sharing Asset and Liability
The FDIC loss sharing asset related to the assumption of Single Family and Commercial Shared-Loss Agreement (“SLAs”) between CBI and the FDIC arising from the CBI’s acquisition of Mutual Bank. The loss sharing asset was measured at its fair value as of August 31, 2014 in conjunction with the acquisition of CBI. During the third quarter of 2014, the Bank submitted losses in excess of the stated reimbursement threshold of $611.0 million, increasing the reimbursable percentage to 95 from 80. The three-year recovery period on the Commercial Share-Loss Portfolio commenced on October 1, 2014. During this period, 95 percent of any recoveries of previously charged-off and reimbursed Commercial SLA loans need to be reimbursed to the FDIC, less any reasonable recovery costs incurred until cumulative submitted losses fall below the stated reimbursement threshold. As of March 31, 2015, the FDIC loss sharing liability was related to $543,000 net payables to the FDIC, consisting of $935,000 of FDIC recoveries partially offset by $392,000 of reimbursable expense owed to the Bank. Of the $543,000 net payable to the FDIC, all activity is related to the non Single Family SLA Portfolio.

Income_Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2015
Income Tax Disclosure [Abstract]
Income Taxes	Note 7 — Income Taxes
	The Company’s income tax expense for continuing operations was $7.5 million for the three months ended March 31, 2015, compared to $7.8 million for the same period in 2014. The effective income tax rate was 40.53 percent for the three months ended March 31, 2015, compared to 41.69 percent for the same period in 2014. The decrease in the effective tax rate for the three months ended March 31, 2015 was due mainly to an increased benefit from low income housing investment compared to the three months ended March 31, 2014. Management concluded that no valuation allowance is required for the deferred tax assets as of March 31, 2015.
	As of March 31, 2015, the Company was subject to examinations by various federal and state tax authorities for the tax years ended December 31, 2004 through 2013. As of March 31, 2015, the Company was subjected to audits or examinations by the Internal Revenue Service for the 2009 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 due to the results of the audits.

Subordinated_Debentures_and_Re

Subordinated Debentures and Rescinded Stock Obligation	3 Months Ended
	Mar. 31, 2015
Debt Disclosure [Abstract]
Subordinated Debentures and Rescinded Stock Obligation	Note 8 — Subordinated Debentures and Rescinded Stock Obligation
	Subordinated Debentures
	During the third quarter of 2014, the Company assumed CBI’s Junior Subordinated Deferrable Interest Debentures (“Subordinated Debentures”) with an unpaid principal balance of $26.8 million and an estimated fair value of $18.5 million. The $8.3 million discount will be amortized to interest expense over the remaining term. In December 2005, a trust was formed by CBI and issued $26.0 million 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 thereafter and invested the proceeds in Subordinated Debentures. The Subordinated Debentures will mature on December 31, 2035, however, the Bank may redeem the Subordinated Debentures at an earlier date if certain conditions are met. The TPS will be subject to mandatory redemption if the Subordinated Debentures are repaid by the Company. Interest is payable quarterly, and the Company has the option to defer interest payments on the Subordinated Debentures from time to time for a period not to exceed five consecutive years. The discount amortization was $38,000 for the three months ended March 31, 2015.
	Rescinded Stock Obligation
	Hanmi Finanical assumed a rescinded stock obligation of $15.5 million and related accrued interest payable of $4.5 million at the closing date of the CBI acquisition. The obligation resulted from the issuance of CBI common shares that CBI was not legally authorized to issue in 2010 and 2009. Interest has been accrued on the obligation at statutory interest rates that vary from state to state. The rescinded stock obligation and accrued interest as of March 31, 2015 were $150,000 and $65,000, respectively, and were $933,000 and $288,000, respectively, as of December 31, 2014.

Stockholders_Equity

Stockholders' Equity	3 Months Ended
	Mar. 31, 2015
Equity [Abstract]
Stockholders' Equity	Note 9 — Stockholders’ Equity
	Stock Warrants
	As part of an agreement dated as of July 27, 2010 with Cappello Capital Corp., the placement agent in connection with our best efforts offering and the financial advisor in connection with our completed rights offering, we issued warrants to purchase 250,000 shares of our common stock for services performed. The warrants had an exercise price of $9.60 per share. According to the agreement, the warrants vested on October 14, 2010 and were exercisable until their expiration on October 14, 2015. The Company followed the guidance of FASB ASC Topic 815-40, Derivatives and Hedging—Contracts in Entity’s Own Stock, which established a framework for determining whether certain freestanding and embedded instruments are indexed to a company’s own stock for purposes of evaluation of the accounting for such instruments under existing accounting literature. Under GAAP, the issuer is required to measure the fair value of the equity instruments in the transaction as of the earlier of (i) the date at which a commitment for performance by the counterparty to earn the equity instruments is reached or (ii) the date at which the counterparty’s performance is complete. The fair value of the warrants at the date of issuance totaling $2.0 million was recorded as a liability and a cost of equity, which was determined by the Black-Scholes option pricing model. The expected stock volatility was based on historical volatility of our common stock over the expected term of the warrants. We used a weighted average expected stock volatility of 111.46 percent. The expected life assumption was based on the contract term of five years. The dividend yield of zero was based on the fact that we had no intention to pay cash dividends for the term at the grant date. The risk free rate of 2.07 percent used for the warrants was equal to the zero coupon rate in effect at the time of the grant. During the years of 2012, 2013 and 2014, all the stock warrants were exercised and there were no outstanding stock warrants as of December 31, 2014.

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive Income	3 Months Ended
	Mar. 31, 2015
Equity [Abstract]
Accumulated Other Comprehensive Income	Note 10 – Accumulated Other Comprehensive Income
	Activity in accumulated other comprehensive income for the three months ended March 31, 2015 and 2014 was as follows:
		Unrealized Gains			Unrealized Gains
		and Losses on			and Losses on
		Available-for-Sale			Interest-Only		Tax Benefit
		Securities			Strip		(Expense)			Total
					(In thousands)
	For the three months ended March 31, 2015
	Balance at beginning of period	$	(985	)	$	16	$	1,432		$	463
	Other comprehensive income (loss) before reclassification		12,043			—		(4,123	)		7,920
	Reclassification from accumulated other comprehensive income		(2,184	)		—		—			(2,184	)
	Period change		9,859			—		(4,123	)		5,736
	Balance at end of period	$	8,874		$	16	$	(2,691	)	$	6,199
	For the three months ended March 31, 2014
	Balance at beginning of period	$	(18,187	)	$	16	$	8,791		$	(9,380	)
	Other comprehensive income (loss) before reclassification		8,098			1		(2,807	)		5,292
	Reclassification from accumulated other comprehensive income		(1,421	)		—		—			(1,421	)
	Period change		6,677			1		(2,807	)		3,871
	Balance at end of period	$	(11,510	)	$	17	$	5,984		$	(5,509	)
	For the three months ended March 31, 2015, there was a $2.2 million reclassification from accumulated other comprehensive income to gains in earnings resulting from the sale of available-for-sale securities. The $2.2 million reclassification adjustment out of accumulated other comprehensive income was included in net gain on sales of investment securities under noninterest income. The securities sold had a recorded unrealized gain of $535,000 in accumulated other comprehensive income as of December 31, 2014.
	For the three months ended March 31, 2014, there was a $1.4 million reclassification from accumulated other comprehensive income to gains in earnings resulting from the sale of available-for-sale securities. The $1.4 million reclassification adjustment out of accumulated other comprehensive income was included in net gain on sales of investment securities under noninterest income. The securities sold had a recorded unrealized gain of $59,000 in accumulated other comprehensive income as of December 31, 2013.

Regulatory_Matters

Regulatory Matters	3 Months Ended
	Mar. 31, 2015
Banking and Thrift [Abstract]
Regulatory Matters	Note 11 — Regulatory Matters
	Risk-Based Capital
	In July 2013, the Board of Governors of the Federal Reserve System, the Office of the Comptroller of the Currency and the Federal Deposit Insurance Corporation approved the Basel III regulatory capital framework and related Dodd-Frank Wall Street Reform and Consumer Protection Act changes. 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. Additionally, a new rule on the capital conservation buffer will be implemented beginning January 1, 2016. Under the final rules, institutions are subject to limitations on paying dividends, engaging in share repurchases, and paying discretionary bonuses if certain capital levels fall below newly required amounts. The rules became effective January 1, 2015 for smaller, non-complex banking organizations with full implementation of certain deductions and adjustments to regulatory capital through January 1, 2019.
	The capital ratios of Hanmi Financial and the Bank as of March 31, 2015 and December 31, 2014 were as follows:
							Minimum					Minimum to Be
							Regulatory					Categorized as
		Actual					Requirement					“Well Capitalized”
		Amount		Ratio			Amount		Ratio			Amount		Ratio
		(In thousands)
	March 31, 2015
	Total capital (to risk-weighted assets):
	Hanmi Financial	$	493,598		15.4	%	$	252,777		8	%		N/A		N/A
	Hanmi Bank	$	482,965		15.33	%	$	252,348		8	%	$	315,435		10	%
	Tier 1 capital (to risk-weighted assets):
	Hanmi Financial	$	454,582		14.15	%	$	189,583		6	%		N/A		N/A
	Hanmi Bank	$	443,946		14.08	%	$	189,261		6	%	$	252,348		8	%
	Common equity Tier 1 capital (to risk-weighted assets)
	Hanmi Financial	$	454,582		14.15	%	$	142,187		4.5	%		N/A		N/A
	Hanmi Bank	$	443,946		14.08	%	$	141,946		4.5	%	$	205,033		6.5	%
	Tier 1 capital (to average assets):
	Hanmi Financial	$	454,582		10.78	%	$	165,895		4	%		N/A		N/A
	Hanmi Bank	$	443,946		10.72	%	$	165,710		4	%	$	207,137		5	%
	December 31, 2014
	Total capital (to risk-weighted assets):
	Hanmi Financial	$	493,598		15.89	%	$	248,501		8	%		N/A		N/A
	Hanmi Bank	$	470,934		15.18	%	$	248,157		8	%	$	310,196		10	%
	Tier 1 capital (to risk-weighted assets):
	Hanmi Financial	$	454,582		14.63	%	$	124,250		4	%		N/A		N/A
	Hanmi Bank	$	431,971		13.93	%	$	124,078		4	%	$	186,118		6	%
	Tier 1 capital (to average assets):
	Hanmi Financial	$	454,582		10.91	%	$	166,600		4	%		N/A		N/A
	Hanmi Bank	$	431,971		10.39	%	$	166,332		4	%	$	207,915		5	%

Fair_Value_Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value Measurements	Note 12 — Fair Value Measurements
	Fair Value Measurements
	FASB 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 investment securities available for sale at fair value on a recurring basis. Certain other assets, such as loans held for sale, impaired loans, other real estate owned, and other intangible assets, are recorded at fair value on a non-recurring basis. Non- recurring fair value measurements typically involve assets that are periodically evaluated for impairment and for which any impairment is recorded in the period in which the re-measurement is performed.
	The following methods and assumptions were used to estimate the fair value of each class of financial instrument below:
	Investment securities available for sale – The fair values of investment 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 investment securities include U.S. government and agency debentures and equity securities 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 investment securities primarily include mortgage-backed securities, municipal bonds, collateralized mortgage obligations, SBA loan pool securities, and equity securities in markets that are not active. In determining the fair value of the securities categorized as Level 2, we obtain reports from nationally recognized broker-dealers detailing the fair value of each investment security held as of each reporting date. The broker-dealers use prices obtained from nationally recognized pricing services to value our fixed income securities. The fair value of the municipal bonds is determined based on a proprietary model maintained by the broker-dealers. We review the prices obtained for reasonableness based on our understanding of the marketplace, and also consider any credit issues related to the bonds. As we have not made any adjustments to the market quotes provided to us and as they are based on observable market data, they have been categorized as Level 2 within the fair value hierarchy. Level 3 investment 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.
	SBA loans held for sale – SBA loans held for sale are carried at the lower of cost or fair value. As of March 31, 2015 and December 31, 2014, we had $8.7 million and $5.5 million SBA loans held for sale, respectively. 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, 2015, the entire balance of SBA loans held for sale was recorded at its cost. We record SBA loans held for sale on a nonrecurring basis with Level 2 inputs.
	Impaired loans (excluding PCI loans) – Nonaccrual loans and performing restructured loans are considered impaired for reporting purposes and are measured and recorded at fair value on a non-recurring basis. Nonaccrual Non-PCI loans with an unpaid principal balance over $100,000 and all performing restructured loans are reviewed individually for the amount of impairment, if any. Nonaccrual Non-PCI loans with an unpaid principal balance of $100,000 or less are evaluated for impairment collectively. The Company does not record loans at fair value on a recurring basis. However, from time to time, nonrecurring fair value adjustments to collateral dependent impaired loans are recorded based on either the current appraised value of the collateral, a Level 2 measurement, or management’s judgment and estimation of value reported on older appraisals that are then adjusted based on recent market trends, a Level 3 measurement.
	Other real estate owned – Fair value of OREO is based primarily on third party appraisals, less costs to sell and result in a Level 2 classification of the inputs for determining fair value. Appraisals are required annually and may be updated more frequently as circumstances require and the fair value adjustments are made to OREO based on the updated appraised value of the property.
	Nonperforming loans held for sale – We reclassify certain nonperforming loans as held for sale when we decide to sell those loans. The fair value of nonperforming loans held for sale is generally based upon the quotes, bids or sales contract prices which approximate their fair value. Nonperforming loans held for sale are recorded at estimated fair value less anticipated liquidation cost. As of March 31, 2015 and December 31, 2014, we did not have nonperforming loans held for sale, which are measured on a nonrecurring basis with Level 2 inputs.
	Assets and Liabilities Measured at Fair Value on a Recurring Basis
	There were no transfers of assets between Level 1 and Level 2 of the fair value hierarchy for the three months ended March 31, 2015. As of March 31, 2015 and December 31, 2014, assets and liabilities measured at fair value on a recurring basis are as follows:
			Level 1		Level 2			Level 3
			Quoted Prices in		Significant			Significant		Balance
			Active Markets		Observable			Unobservable
			for Identical		Inputs with No			Inputs
			Assets		Active Market
					with Identical
					Characteristics
			(In thousands)
	March 31, 2015
	Assets:
	Securities available for sale:
	Mortgage-backed securities		$	—	$	492,896		$	—	$	492,896
	Collateralized mortgage obligations			—		165,405			—		165,405
	U.S. government agency securities			63,355		—			—		63,355
	SBA loan pools securities			—		75,027			—		75,027
	Municipal bonds-tax exempt			—		3,676			—		3,676
	Municipal bonds-taxable			—		17,042			—		17,042
	Corporate bonds			—		16,984			—		16,984
	U.S. treasury securities			163		—			—		163
	Other securities			—		23,100			—		23,100
	Equity securities			—		—			416		416
	Total securities available for sale		$	63,518	$	794,130		$	416	$	858,064
	December 31, 2014
	Assets:
	Securities available for sale:
	Mortgage-backed securities		$	—	$	573,286		$	—	$	573,286
	Collateralized mortgage obligations			—		188,047			—		188,047
	U.S. government agency securities			128,207		—			—		128,207
	SBA loan pools securities			—		109,447			—		109,447
	Municipal bonds-tax exempt			—		3,681			709		4,390
	Municipal bonds-taxable			—		16,922			—		16,922
	Corporate bonds			—		16,948			—		16,948
	U.S. treasury securities			163		—			—		163
	Other securities			—		22,893			—		22,893
	Equity securities			—		—			414		414
	Total securities available for sale		$	128,370	$	931,224		$	1,123	$	1,060,717
	The table below presents a reconciliation and income statement classification of gains and losses for all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the three months ended March 31, 2015:
			Beginning		Purchases,			Realized		Unrealized		Ending
			Balance as of		Issuances			Gains or		Gains or		Balance as of
			January 1,		and			Losses		Losses		March 31,
			2015		Settlement			in Earnings		in Other		2015
										Comprehensive
										Income
					(In thousands)
	Assets:
	Municipal bonds-tax exempt (1)		$	709	$	(709	)	$	—	$	—	$	—
	Equity securities (2)			414		—			—		2		416
	(1)	A zero coupon tax credit municipal bond matured during the first quarter of 2015.
(2)	Reflects two equity securities that are not actively traded. The fair value of one equity security with a fair value of $216,000 was computed using valuation multiples (price to book and price to earnings) derived from market transactions for comparable companies. The other equity security with a fair value of $200,000 was computed using valuation multiples (price to book and price to earnings) derived from 1) market transactions for comparable companies, and 2) publicly-traded comparable companies.
Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis
As of March 31, 2015 and December 31, 2014, assets and liabilities measured at fair value on a non-recurring basis are as follows:
		Level 1		Level 2			Level 3
		Quoted Prices in		Significant			Significant		Loss During the
		Active Markets		Observable			Unobservable		Three Months Ended
		for Identical		Inputs With No			Inputs		31-Mar-15
		Assets		Active Market
				With  Identical
				Characteristics
				(In thousands)
March 31, 2015
Assets:
Impaired loans (excluding PCI loans) (1)		$	—	$	32,116		$	956	$	1,200
Other real estate owned (2)			—		12,114			—		—
		Level 1		Level 2			Level 3
		Quoted Prices in		Significant			Significant		Loss During the
		Active Markets		Observable			Unobservable		Twelve Months Ended
		for Identical		Inputs With No			Inputs		31-Dec-14
		Assets		Active Market
				With Identical
				Characteristics
				(In thousands)
December 31, 2014
Assets:
Impaired loans (3)		$	—	$	32,171		$	781	$	2,774
Other real estate owned (4)			—		15,790			—		—
(1)	Include real estate loans of $30.1 million, commercial and industrial loans of $1.1 million, and consumer loans of $1.8 million.
(2)	Includes properties from the foreclosure of commercial property loans of $12.0 million and residential property loans of $163,000.
(3)	Include real estate loans of $30.0 million, commercial and industrial loans of $1.2 million, and consumer loans of $1.7 million.
(4)	Includes properties from the foreclosure of commercial property loans of $13.2 million and residential property loans of 2.6 million.
FASB ASC 825 requires disclosure of the fair value of financial assets and financial liabilities, including those financial assets and financial liabilities that are not measured and reported at fair value on a recurring basis or non-recurring basis. The methodologies for estimating the fair value of financial assets and financial liabilities that are measured on a recurring basis or non-recurring basis are discussed above.
The estimated fair value of financial instruments has been determined by using available market information and appropriate valuation methodologies. However, considerable judgment is required to interpret market data in order to develop estimates of fair value. Accordingly, the estimates presented herein are not necessarily indicative of the amounts that we could realize in a current market exchange. The use of different market assumptions and/or estimation methodologies may have a material effect on the estimated fair value amounts.
The estimated fair values of financial instruments were as follows:
		March 31, 2015
		Carrying		Fair Value
		Amount		Level 1			Level 2		Level 3
				(In thousands)
Financial assets:
Cash and cash equivalents		$	182,054	$	182,054		$	—	$	—
Securities available for sale			858,064		63,518			794,130		416
Loans receivable, net of allowance for loan losses			2,767,080		—			—		2,772,612
Loans held for sale			8,677		—			8,677		—
Accrued interest receivable			9,238		9,238			—		—
Servicing assets			13,321		—			—		13,321
Investment in FHLB stock			17,581		17,581			—		—
Investment in FRB stock			12,273		12,273			—		—
Financial liabilities:
Noninterest-bearing deposits			1,064,695		—			1,064,695		—
Interest-bearing deposits			2,487,981		—			—		2,500,027
Servicing liabilities			5,529		—			—		5,529
Borrowings			18,582		—			—		18,582
Accrued interest payable			3,497		3,497			—		—
Off-balance sheet items:
Commitments to extend credit			297,912		—			—		297,912
Standby letters of credit			6,299		—			—		6,299
		31-Dec-14
		Carrying		Fair Value
		Amount		Level 1			Level 2		Level 3
				(In thousands)
Financial assets:
Cash and cash equivalents		$	158,320	$	158,320		$	—	$	—
Securities available for sale			1,060,717		128,370			931,224		1,123
Loans receivable, net of allowance for loan losses			2,735,932		—			—		2,738,401
Loans held for sale			5,451		—			5,451		—
Accrued interest receivable			9,749		9,749			—		—
Servicing assets			13,773		—			—		13,773
Investment in FHLB stock			17,580		17,580			—		—
Investment in FRB stock			12,273		12,273			—		—
Financial liabilities:
Noninterest-bearing deposits			1,022,972		—			1,022,972		—
Interest-bearing deposits			2,533,774		—			—		2,528,304
Servicing liabilities			5,971		—			—		5,971
Borrowings			168,544		—			—		168,544
Accrued interest payable			3,450		3,450			—		—
Off-balance sheet items:
Commitments to extend credit			309,584		—			—		309,584
Standby letters of credit			8,982		—			—		8,982
The methods and assumptions used to estimate the fair value of each class of financial instruments for which it was practicable to estimate that value are explained below:
Cash and cash equivalents – The carrying amounts of cash and cash equivalents approximate fair value due to the short-term nature of these instruments (Level 1).
Investment securities – The fair value of investment securities, consisting of investment securities available for sale, is generally obtained from market bids for similar or identical securities, from independent securities brokers or dealers, or from other model-based valuation techniques described above (Level 1, 2 and 3).
Loans receivable, net of allowance for loan losses – Loans receivable include Non-PCI loans, PCI loans and Non-PCI impaired loans. The fair value of Non-PCI loans receivable is estimated based on the discounted cash flow approach. The discount rate was derived from the associated yield curve plus spreads and reflects the offering rates offered by the Bank for loans with similar financial characteristics. Yield curves are constructed by product type using the Bank’s loan pricing model for like-quality credits. The discount rates used in the Bank’s model represent the rates the Bank would offer to current borrowers for like-quality credits. These rates could be different from what other financial institutions could offer for these loans. No adjustments have been made for changes in credit within the loan portfolio. It is our opinion that the allowance for loan losses relating to performing and nonperforming loans results in a fair valuation of such loans. Additionally, the fair value of our loans may differ significantly from the values that would have been used had a ready market existed for such loans and may differ materially from the values that we may ultimately realize (Level 3).
The fair value of PCI loans receivable was estimated based on discounted expected cash flows. Increases in expected cash flows and improvements in the timing of cash flows over those previously estimated increase the amount of accretable yield and are recognized as an increase in yield and interest income prospectively. Decreases in the amount and delays in the timing of expected cash flows compared to those previously estimated decrease the amount of accretable yield and usually result in a provision for loan losses and the establishment of an allowance for loan losses (Level 3).
The fair value of impaired loans (excluding PCI loans) is estimated based on the net realizable fair value of the collateral or the observable market price of the most recent sale or quoted price from loans held for sale. The Company does not record loans at fair value on a recurring basis. Nonrecurring fair value adjustments to collateral dependent impaired loans are recorded based on the current appraised value of the collateral (Level 3).
Loans held for sale – Loans held for sale are carried at the lower of aggregate cost or fair market value, as determined based upon quotes, bids or sales contract prices, or as may be assessed based upon the fair value of the collateral which is obtained from recent real estate appraisals (Level 2). Adjustments are routinely made in the appraisal process by the appraisers to adjust for differences between the comparable sales and income data available. Such adjustment is typically significant and results in Level 3 classification of the inputs for determining fair value.
Accrued interest receivable – The carrying amount of accrued interest receivable approximates its fair value (Level 1).
Servicing assets or servicing liabilities – Servicing assets or servicing liabilities are carried at implied fair value. The fair values of the servicing assets or servicing liabilities are estimated by discounting future cash flows using market-based discount rates and prepayments speeds. The discount rate is based on the current U.S. Treasury yield curve, as published by the Department of the Treasury, plus a spread for the marketplace risk associated with these assets. (Level 3)
Investment in FHLB and FRB stock – The carrying amounts of investment in FHLB and FRB stock approximate fair value as such stock may be resold to the issuer at carrying value (Level 1).
Noninterest-bearing deposits – The fair value of noninterest-bearing deposits is the amount payable on demand at the reporting date (Level 2).
Interest-bearing deposits – The fair value of interest-bearing deposits, such as savings accounts, money market checking, and certificates of deposit, is estimated based on discounted cash flows. The cash flows for non-maturity deposits, including savings accounts and money market checking, are estimated based on their historical decaying experiences. The discount rate used for fair valuation is based on interest rates currently being offered by the Bank on comparable deposits as to amount and term (Level 3).
Borrowings – Borrowings consist of FHLB advances, subordinated debentures and other borrowings. Discounted cash flows based on current market rates for borrowings with similar remaining maturities are used to estimate the fair value of borrowings (Level 3).
Accrued interest payable – The carrying amount of accrued interest payable approximates its fair value (Level 1).
Commitments to extend credit and standby letters of credit – The fair values of commitments to extend credit and standby letters of credit are based upon the difference between the current value of similar loans and the price at which the Bank has committed to make the loans (Level 3).

ShareBased_Compensation

Share-Based Compensation	3 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-Based Compensation	Note 13 — Share-Based Compensation
	Share-Based Compensation Expense
	For the three months ended March 31, 2015 and 2014, share-based compensation expenses were $528,000 and $605,000, respectively. Net tax benefits recognized from stock option exercises and restricted stock awards vesting were $30,000 and $112,000 for the three months ended March 31, 2015 and 2014, respectively.
	Unrecognized Share-Based Compensation Expense
	As of March 31, 2015, unrecognized share-based compensation expense was as follows:
						Average Expected
			Unrecognized			Recognition
			Expense			Period
			(In thousands)
	Stock option awards		$	1,137			1.6 years
	Restricted stock awards			2,360			2.0 years
	Total unrecognized share-based compensation expense		$	3,497			1.8 years
	The table below provides stock option information for the three months ended March 31, 2015:
						Weighted-		Weighted-		Aggregate
						Average		Average		Intrinsic
						Exercise		Remaining		Value of
			Number of			Price Per		Contractual		In-the-Money
			Shares			Share		Life		Options
			(In thousands, except share and per share data)
	Options outstanding at beginning of period			603,872		$	23.78		8.3 years	$	2,853	(1)
	Options exercised			(19,581	)	$	14.2		8.0 years
	Options forfeited			(501	)	$	12.54		7.7 years
	Options expired			(125	)	$	144		1.1 years
	Options outstanding at end of period			583,665		$	24.09		8.0 years	$	2,383	(2)
	Options exercisable at end of period			205,058		$	35.12		6.8 years	$	1,158	(2)
	(1)	Intrinsic value represents the excess of the closing stock price on the last trading day of the period, which was $21.81 as of December 31, 2014, 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 $21.15 as of March 31, 2015, over the exercise price, multiplied by the number of options.
	There were 19,581 stock options exercised during the three months ended March 31, 2015, compared to 15,195 stock options exercised during the same period in 2014.
	Restricted Stock Awards
	Restricted stock awards under the Company’s 2007 and 2013 Equity Compensation Plans typically vest over three to five 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. Forfeitures of restricted stock are treated as cancelled shares.
	The table below provides information for restricted stock awards for the three months ended March 31, 2015:
			Number of			Weighted-
			Shares			Average
						Grant Date
						Fair Value
						Per Share
	Restricted stock at beginning of period			173,222		$	19.58
	Restricted stock granted			3,850		$	20.33
	Restricted stock vested			(2,000	)	$	24.45
	Restricted stock at end of period			175,072		$	19.55

Earnings_Per_Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Earnings Per Share	Note 14 — 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. Unvested restricted stock is excluded from the calculation of weighted-average common shares for basic EPS. For diluted EPS, weighted-average common shares include the impact of restricted stock under the treasury method.
	The following table is a reconciliation of the components used to derive basic and diluted EPS for the periods indicated:
		Three Months Ended March 31,
		2015						2014
				Weighted-						Weighted-
		Net		Average		Per		Net		Average		Per
		Income		Shares		Share		Income		Shares		Share
		(Numerator)		(Denominator)		Amount		(Numerator)		(Denominator)		Amount
		(In thousands, except share and per share data)
	Basic EPS
	Income from continuing operations, net of taxes	$	11,054		31,747,299	$	0.35	$	10,969		31,659,705	$	0.35
	Income from discontinued operations, net of taxes		—		31,747,299		—		22		31,659,705		—
	Basic EPS	$	11,054		31,747,299	$	0.35	$	10,991		31,659,705	$	0.35
	Effect of dilutive securities - options and unvested restricted stock		—		279,424		—		—		274,458		—
	Diluted EPS
	Income from continuing operations, net of taxes	$	11,054		32,026,723	$	0.35	$	10,969		31,934,163	$	0.34
	Income from discontinued operations, net of taxes		—		32,026,723		—		22		31,934,163		—
	Diluted EPS	$	11,054		32,026,723	$	0.35	$	10,991		31,934,163	$	0.34
	For the three months ended March 31, 2015 and 2014, stock options totaling 138,725 and 34,250 respectively, were not included in the computation of diluted EPS because their effect would be anti-dilutive.

OffBalance_Sheet_Commitments

Off-Balance Sheet Commitments	3 Months Ended
	Mar. 31, 2015
Risks and Uncertainties [Abstract]
Off-Balance Sheet Commitments	Note 15 — 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 credit 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,		December 31,
		2015		2014
		(In thousands)
	Commitments to extend credit	$	297,912	$	309,584
	Standby letters of credit		6,299		8,982
	Commercial letters of credit		4,590		7,046
	Total undisbursed loan commitments	$	308,801	$	325,612

Liquidity

Liquidity	3 Months Ended
	Mar. 31, 2015
Text Block [Abstract]
Liquidity	Note 16 — Liquidity
	Hanmi Financial
	Management believes that Hanmi Financial, on a stand-alone basis, has adequate liquid assets to meet its operating cash needs through March 31, 2016.
	Hanmi Bank
	The principal objective of our liquidity management program is to maintain the Bank’s ability to meet the day-to-day cash flow requirements of our customers who either wish to withdraw funds or to draw upon credit facilities to meet their cash needs. Management believes that the Bank, on a stand-alone basis, has adequate liquid assets to meet its current obligations. The Bank’s primary funding source will continue to be deposits originating from its branch platform. The Bank’s wholesale funds historically consisted of FHLB advances and brokered deposits. As of March 31, 2015, the Bank had $99,000 of brokered deposits assumed from the CBI acquisition.
	We monitor the sources and uses of funds on a regular basis to maintain an acceptable liquidity position. The Bank’s primary source of borrowings is the FHLB, from which the Bank is eligible to borrow up to 30 percent of its assets. As of March 31, 2015, the total borrowing capacity available based on pledged collateral and the remaining available borrowing capacity were $649.6 million and $649.6 million, respectively, compared to $649.5 million and $499.5 million, respectively, as of December 31, 2014. The Bank’s FHLB borrowings as of March 31, 2015 and December 31, 2014 totaled zero and $150.0 million, respectively, which represented zero percent and 3.54 percent of assets as of March 31, 2015 and December 31, 2014, respectively.
	The amount that the FHLB is willing to advance differs based on the quality and character of qualifying collateral pledged by the Bank, and the advance rates for qualifying collateral may be adjusted upwards or downwards by the FHLB from time to time. To the extent deposit renewals and deposit growth are not sufficient to fund maturing and withdrawable deposits, repay maturing borrowings, fund existing and future loans and investment securities and otherwise fund working capital needs and capital expenditures, the Bank may utilize the remaining borrowing capacity from its FHLB borrowing arrangement.
	As a means of augmenting its liquidity, the Bank had an available borrowing source of $55.9 million from the Federal Reserve Discount Window, to which the Bank pledged loans with a carrying value of $77.4 million, and had no borrowings as of December 31, 2015. The Bank has a line of credit with Raymond James & Associates, Inc. for repurchase agreements up to $100.0 million. The Bank has an unsecured federal funds lines of credit totaling $95.0 million from three financial institutions to support short-term liquidity.
	The Bank has Contingency Funding Plans (“CFPs”) designed to ensure that liquidity sources are sufficient to meet its ongoing obligations and commitments, particularly in the event of a liquidity contraction. The CFPs are designed to examine and quantify its liquidity under various “stress” scenarios. Furthermore, the CFPs provide a framework for management and other critical personnel to follow in the event of a liquidity contraction or in anticipation of such an event. The CFPs address authority for activation and decision making, liquidity options and the responsibilities of key departments in the event of a liquidity contraction.

Segment_Reporting

Segment Reporting	3 Months Ended
	Mar. 31, 2015
Segment Reporting [Abstract]
Segment Reporting	Note 17 — Segment Reporting
	Through our branch network and lending units, we provide a broad range of financial services to individuals and companies. These services include demand, time and savings deposits, and real estate, commercial, industrial and consumer lending. While our chief decision makers monitor the revenue streams of our various products and services, operations are managed and financial performance is evaluated on a company-wide basis. Accordingly, we consider all of our operations to be aggregated in one reportable operating segment.

Subsequent_Events

Subsequent Events	3 Months Ended
	Mar. 31, 2015
Subsequent Events [Abstract]
Subsequent Events	Note 18 — 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 quarterly period ended March 31, 2015, or would be required to be recognized in the Consolidated Financial Statements (Unaudited) as of March 31, 2015.

Fair_Value_Measurements_Polici

Fair Value Measurements (Policies)	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value Measurements	The estimated fair value of financial instruments has been determined by using available market information and appropriate valuation methodologies. However, considerable judgment is required to interpret market data in order to develop estimates of fair value. Accordingly, the estimates presented herein are not necessarily indicative of the amounts that we could realize in a current market exchange. The use of different market assumptions and/or estimation methodologies may have a material effect on the estimated fair value amounts.

Acquisition_Tables

Acquisition (Tables)	3 Months Ended
	Mar. 31, 2015
Business Combinations [Abstract]
Summary of Purchase Price Allocation Reported	The following table presents the purchase price allocation reported as of the acquisition date:
		(In thousands)
	Consideration paid:
	CBI stockholders	$	50,000
	Redemption of preferred and cumulative unpaid dividends		28,675
			78,675
	Assets acquired:
	Cash and cash equivalents		197,209
	Securities available for sale		663,497
	Loans		297,272
	Premises and equipment		17,925
	Other real estate owned		25,952
	Income tax assets, net		12,011
	Core deposit intangible		2,213
	FDIC loss sharing assets		11,413
	Bank-owned life insurance		18,296
	Servicing assets		7,497
	Other assets		14,636
	Total assets acquired		1,267,921
	Liabilities assumed:
	Deposits		1,098,997
	Subordinated debentures		18,473
	Rescinded stock obligation		15,485
	FHLB advances		10,000
	Servicing liabilities		6,039
	Other liabilities		25,675
	Total liabilities assumed		1,174,669
	Total identifiable net assets	$	93,252
	Bargain purchase gain, net of deferred taxes	$	14,577
Summary of Accretable Yield on Purchased Credit Impaired Loans Acquired	The following table summarizes the accretable yield on the purchased credit impaired loans acquired from the CBI merger at August 31, 2014.
		(In thousands)
	Undiscounted contractual cash flows	$	93,623
	Nonaccretable discount		(17,421	)
	Undiscounted cash flow to be collected		76,202
	Estimated fair value of PCI loans		65,346
	Accretable yield	$	10,856
Business Acquisition, Unaudited Proforma Result of Operation Information	The following table presents our unaudited pro forma results of operations for the periods presented as if the CBI acquisition had been completed on January 1, 2014. The unaudited pro forma results of operations include the historical accounts of Hanmi Financial and CBI and pro forma adjustments as may be required, including the amortization of intangibles with definite lives and the amortization or accretion of any premiums or discounts arising from fair value adjustments for assets acquired and liabilities assumed. The unaudited pro forma information is intended for informational purposes only and is not necessarily indicative of our future operating results or operating results that would have occurred had the CBI acquisition been completed at the beginning of 2014. No assumptions have been applied to the pro forma results of operations regarding possible revenue enhancements, expense efficiencies or asset dispositions.
		Three Months Ended March 31,
		2015			2014
		(In thousands, except per share data)
	Pro forma revenues (net interest income plus noninterest income)	$	53,531		$	56,245
	Pro forma net income from continuing operations	$	12,611		$	16,280
	Pro forma earnings per share from continuing operations:
	Basic	$	0.4		$	0.51
	Diluted	$	0.39		$	0.51

Accounting_for_Investments_in_1

Accounting for Investments in Qualified Affordable Housing Projects (Tables)	3 Months Ended
	Mar. 31, 2015
Accounting Changes and Error Corrections [Abstract]
Summary of Change in Accounting Principle on Balance Sheets	Hanmi Financial Corporations and Subsidiaries
	Consolidated Balance Sheet (Unaudited)
		As of March 31, 2014
		As Previously			Effect of Change in			As Adjusted
		Reported			Accounting Principle
		(In thousands)
	Assets
	Cash and cash equivalents	$	204,384		$	—		$	204,384
	Securities available for sale		520,990			—			520,990
	Loans receivable		2,221,520			—			2,221,520
	Income tax assets		53,227			273			53,500
	Other assets		96,841			(1,477	)		95,364
	Total assets	$	3,096,962		$	(1,204	)	$	3,095,758
	Liabilities and stockholders’ equity
	Liabilities	$	2,682,247		$	—		$	2,682,247
	Stockholders’ equity		414,715			(1,204	)		413,511
	Total liabilities and stockholders’ equity	$	3,096,962		$	(1,204	)	$	3,095,758
Summary of Change in Accounting Principle on Statements of Income	Hanmi Financial Corporations and Subsidiaries
	Consolidated Statements of Income (Unaudited)
		As Previously			Effect of Change in			As Adjusted
		Reported			Accounting Principle
		(In thousands, except per share data)
	For the Three Months Ended March 31, 2014
	Interest and dividend income	$	30,367		$	—		$	30,367
	Interest expense		3,269			—			3,269
	Negative provision for credit losses		(3,300	)		—			(3,300	)
	Net interest income		30,398			—			30,398
	Noninterest income		6,214			—			6,214
	Noninterest expense		17,961			(162	)		17,799
	Income before provision for income taxes		18,651			162			18,813
	Provision for income taxes		7,638			206			7,844
	Income from continuing operations	$	11,013		$	(44	)	$	10,969
	Earnings per share from continuing operations
	Basic	$	0.35		$	—		$	0.35
	Diluted	$	0.35		$	(0.01	)	$	0.34
Summary of Change in Accounting Principle on Statements of Cash Flows	Hanmi Financial Corporations and Subsidiaries
	Consolidated Statement of Cash Flows (Unaudited)
		As Previously			Effect of Change in			As Adjusted
		Reported			Accounting Principle
		(In thousands)
	For the Three Months Ended March 31, 2014
	Cash flows from operating activities:
	Net income	$	11,035		$	(44	)	$	10,991
	Total adjustment in net income		12,230			44			12,274
	Net cash provided by operating activities		23,265			—			23,265
	Cash flows from investing activities:
	Net cash provided by investing activities		2,418			—			2,418
	Cash flows from financing activities:
	Net cash used in financing activities		(656	)		—			(656	)
	Net increase in cash and cash equivalents		25,027			—			25,027
	Cash and cash equivalents at beginning of period		179,357			—			179,357
	Cash and cash equivalents at end of period	$	204,384		$	—		$	204,384

Sale_of_Insurance_Subsidiaries1

Sale of Insurance Subsidiaries and Discontinued Operations (Tables)	3 Months Ended
	Mar. 31, 2015
Discontinued Operations and Disposal Groups [Abstract]
Summarized Financial Information of Discontinued Operations	Summarized financial information for our discontinued operations related to Chun-Ha and All World are as follows:
		March 31,
		2014
		(In thousands)
	Cash and cash equivalents	$	1,628
	Premises and equipment, net		73
	Other intangible assets, net		1,130
	Other assets		2,764
	Total assets	$	5,595
	Income tax payable	$	1,319
	Accrued expenses and other liabilities		1,785
	Total liabilities	$	3,104
	Net assets of discontinued operations	$	2,491
		Three Months
		Ended March 31,
		2014
		(In thousands)
	Noninterest income	$	37
	Provision for income taxes		15
	Net income from discontinued operations	$	22

Investment_Securities_Tables

Investment Securities (Tables)	3 Months Ended
	Mar. 31, 2015
Investments, Debt and Equity Securities [Abstract]
Summary of Investment Securities Available for Sale	The following is a summary of investment securities available for sale as of March 31, 2015 and December 31, 2014:
			Amortized			Gross		Gross		Estimated
			Cost			Unrealized		Unrealized		Fair
						Gain		Loss		Value
			(In thousands)
	March 31, 2015
	Mortgage-backed securities (1) (2)		$	485,112		$	8,329	$	545	$	492,896
	Collateralized mortgage obligations (1)			164,163			1,719		477		165,405
	U.S. government agency securities			63,967			12		624		63,355
	SBA loan pool securities			75,236			70		279		75,027
	Municipal bonds-tax exempt			3,604			72		—		3,676
	Municipal bonds-taxable			16,562			561		81		17,042
	Corporate bonds			17,018			14		48		16,984
	U.S. treasury securities			162			1		—		163
	Other securities			22,916			260		76		23,100
	Equity securities			450			—		34		416
	Total securities available for sale		$	849,190		$	11,038	$	2,164	$	858,064
	December 31, 2014
	Mortgage-backed securities (1) (2)		$	571,678		$	2,811	$	1,203	$	573,286
	Collateralized mortgage obligations (1)			188,704			417		1,074		188,047
	U.S. government agency securities			129,857			172		1,822		128,207
	SBA loan pool securities			109,983			52		588		109,447
	Municipal bonds-tax exempt			4,319			71		—		4,390
	Municipal bonds-taxable			16,615			398		91		16,922
	Corporate bonds			17,018			2		72		16,948
	U.S. treasury securities			163			—		—		163
	Other securities			22,916			57		80		22,893
	Equity securities			450			—		36		414
	Total securities available for sale		$	1,061,703		$	3,980	$	4,966	$	1,060,717
	(1)	Collateralized by residential mortgages and guaranteed by U.S. government sponsored entities
	(2)	A portion of the mortgage-backed securities is comprised of home mortgage-backed securities backed by home equity conversion mortgages
Schedule of Amortized Cost and Estimated Fair Value of Investment Securities by Contractual Maturity	The amortized cost and estimated fair value of investment securities as of March 31, 2015, by contractual maturity, are shown below. Although mortgage-backed securities and collateralized mortgage obligations have contractual maturities through 2064, expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.
			Available for Sale
			Amortized			Estimated
			Cost			Fair Value
			(In thousands)
	Within one year		$	11,995		$	11,948
	Over one year through five years			11,341			11,363
	Over five years through ten years			88,960			89,001
	Over ten years			64,253			63,935
	Mortgage-backed securities			485,112			492,896
	Collateralized mortgage obligations			164,163			165,405
	Other securities			22,916			23,100
	Equity securities			450			416
	Total		$	849,190		$	858,064
Available for Sale Securities, Continuous Unrealized Loss Position, Fair value	Gross unrealized losses on investment 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, 2015 and December 31, 2014:
			Holding Period
			Less Than 12 Months							12 Months or More						Total
			Gross			Estimated		Number		Gross		Estimated		Number		Gross		Estimated		Number
			Unrealized			Fair		of		Unrealized		Fair		of		Unrealized		Fair		of
			Loss			Value		Securities		Loss		Value		Securities		Loss		Value		Securities
			(In thousands, except number of securities)
	March 31, 2015
	Mortgage-backed securities		$	88		$	29,430		13	$	457	$	23,906		9	$	545	$	53,336		22
	Collateralized mortgage obligations			51			34,752		9		426		30,146		12		477		64,898		21
	U.S. government agency securities			127			23,864		9		497		30,480		10		624		54,344		19
	SBA loan pool securities			12			14,781		3		267		11,837		4		279		26,618		7
	Municipal bonds-taxable			2			1,517		2		79		802		1		81		2,319		3
	Corporate bonds			—			—		—		48		7,947		2		48		7,947		2
	Other securities			—			—		—		76		949		3		76		949		3
	Equity Securities			34			216		1		—		—		—		34		216		1
	Total		$	314		$	104,560		37	$	1,850	$	106,067		41	$	2,164	$	210,627		78
	December 31, 2014
	Mortgage-backed securities		$	288		$	102,704		21	$	915	$	50,625		19	$	1,203	$	153,329		40
	Collateralized mortgage obligations			350			78,191		21		724		33,308		13		1,074		111,499		34
	U.S. government agency securities			—			5,000		1		1,822		73,142		26		1,822		78,142		27
	SBA loan pool securities			155			85,062		15		433		11,975		4		588		97,037		19
	Municipal bonds-taxable			—			—		—		91		5,538		5		91		5,538		5
	Corporate bonds			4			5,021		1		68		7,925		2		72		12,946		3
	Other securities			—			—		—		80		1,945		4		80		1,945		4
	Equity Securities			36			214		1		—		—		—		36		214		1
	Total		$	833		$	276,192		60	$	4,133	$	184,458		73	$	4,966	$	460,650		133
Realized Gains and Losses on Sales of Investment Securities	Realized gains and losses on sales of investment securities and proceeds from sales of investment securities were as follows for the periods indicated:
			Three Months Ended March 31,
			2015			2014
			(In thousands)
	Gross realized gains on sales of investment securities		$	2,194		$	1,421
	Gross realized losses on sales of investment securities			(10	)		—
	Net realized gains on sales of investment securities		$	2,184		$	1,421
	Proceeds from sales of investment securities		$	176,848		$	85,234

Loans_Tables

Loans (Tables)	3 Months Ended
	Mar. 31, 2015
Loans Receivable	Loans receivable consisted of the following as of the dates indicated:
			March 31, 2015									December 31, 2014
			Non-PCI Loans			PCI Loans			Total			Non-PCI Loans			PCI Loans			Total
			(In thousands)
	Real estate loans:
	Commercial property (1)
	Retail		$	679,938		$	10,565		$	690,503		$	675,072		$	8,535		$	683,607
	Hotel/motel			481,960			11,720			493,680			454,499			7,682			462,181
	Gas station			346,798			6,441			353,239			362,240			7,745			369,985
	Other			820,707			10,174			830,881			842,126			5,796			847,922
	Construction			15,123			—			15,123			9,517			—			9,517
	Residential property			154,797			1,716			156,513			120,932			14,371			135,303
	Total real estate loans			2,499,323			40,616			2,539,939			2,464,386			44,129			2,508,515
	Commercial and industrial loans:
	Commercial term			116,252			281			116,533			116,073			327			116,400
	Commercial lines of credit			97,761			—			97,761			93,860			—			93,860
	International loans			36,338			—			36,338			38,929			—			38,929
	Total commercial and industrial loans			250,351			281			250,632			248,862			327			249,189
	Consumer loans			25,942			44			25,986			27,512			45			27,557
	Total gross loans			2,775,616			40,941			2,816,557			2,740,760			44,501			2,785,261
	Allowance for loans losses			(51,515	)		(1,436	)		(52,951	)		(51,640	)		(1,026	)		(52,666	)
	Deferred loan costs			3,474			—			3,474			3,237			—			3,237
	Loans receivable, net		$	2,727,575		$	39,505		$	2,767,080		$	2,692,357		$	43,475		$	2,735,832
	(1)	Includes owner-occupied property loans of $1.14 billion and $1.12 billion as of March 31, 2015 and December 31, 2014, respectively.
Loans Receivable to Loans Held for Sale	The following table details the information on the sales and reclassifications of loans receivable to loans held for sale (excluding PCI loans) by portfolio segment for the three months ended March 31, 2015 and 2014:
			Real Estate			Commercial			Consumer			Total
						and Industrial						Non-PCI
			(In thousands)
	March 31, 2015
	Balance at beginning of period		$	3,323		$	2,128		$	—		$	5,451
	Origination of loans held for sale			16,927			6,181			—			23,108
	Sales of loans held for sale			(13,014	)		(6,840	)		—			(19,854	)
	Principal payoffs and amortization			(10	)		(18	)		—			(28	)
	Balance at end of period		$	7,226		$	1,451		$	—		$	8,677
	March 31, 2014
	Balance at beginning of period		$	—		$	—		$	—		$	—
	Origination of loans held for sale			6,269			85			—			6,354
	Sales of loans held for sale			(5,874	)		(84	)		—			(5,958	)
	Principal payoffs and amortization			(5	)		(1	)		—			(6	)
	Balance at end of period		$	390		$	—		$	—		$	390
Allowance for Loan Losses and Allowance for Off-Balance Sheet Items	Activity in the allowance for loan losses and allowance for off-balance sheet items was as follows for the periods indicated:
			March 31, 2015									March 31
			Non-PCI Loans			PCI Loans			Total			2014
			(In thousands)
	Allowance for loan losses:
	Balance at beginning of period		$	51,640		$	1,026		$	52,666		$	57,555
	Charge-offs			(34	)		(52	)		(86	)		(1,604	)
	Recoveries on loans previously charged off			1,692			352			2,044			4,251
	Net loan recoveries (charge-offs)			1,658			300			1,958			2,647
	(Negative provision) provision charged to operating expense			(1,783	)		110			(1,673	)		(3,609	)
	Balance at end of period		$	51,515		$	1,436		$	52,951		$	56,593
	Allowance for off-balance sheet items:
	Balance at beginning of period		$	1,366		$	—		$	1,366		$	1,248
	(Negative provision) provision charged to operating expense			(312	)		—			(312	)		309
	Balance at end of period		$	1,054		$	—		$	1,054		$	1,557
Allowance for Loan Losses by Portfolio Segment	The following table details the information on the allowance for loan losses by portfolio segment for the three months ended March 31, 2015 and 2014:
			Real Estate			Commercial			Consumer			Unallocated			Total
						and Industrial
			(In thousands)
	March 31, 2015
	Allowance for loan losses on Non-PCI loans:
	Beginning balance		$	41,194		$	9,142		$	220		$	1,084		$	51,640
	Charge-offs			—			(34	)		—			—			(34	)
	Recoveries on loans previously charged off			32			1,660			—			—			1,692
	(Negative provision) provision			1,324			(2,982	)		(35	)		(90	)		(1,783	)
	Ending balance		$	42,550		$	7,786		$	185		$	994		$	51,515
	Ending balance: individually evaluated for impairment		$	3,386		$	1,913		$	—		$	—		$	5,299
	Ending balance: collectively evaluated for impairment		$	39,164		$	5,873		$	185		$	994		$	46,216
	Non-PCI loans receivable:
	Ending balance		$	2,499,323		$	250,351		$	25,942		$	—		$	2,775,616
	Ending balance: individually evaluated for impairment		$	33,537		$	11,570		$	1,823		$	—		$	46,930
	Ending balance: collectively evaluated for impairment		$	2,465,786		$	238,781		$	24,119		$	—		$	2,728,686
	Allowance for loan losses on PCI loans:
	Beginning balance		$	895		$	131		$	—		$	—		$	1,026
	Charge-offs			(52	)		—			—			—			(52	)
	Recoveries on loans previously charged off			—			352			—			—			352
	Provision			475			(365	)		—			—			110
	Ending balance: acquired with deteriorated credit quality		$	1,318		$	118		$	—		$	—		$	1,436
	PCI loans receivable:
	Ending balance: acquired with deteriorated credit quality		$	40,633		$	282		$	44		$	—		$	40,959
	March 31, 2014
	Allowance for loan losses on Non-PCI loans :
	Beginning balance		$	43,550		$	11,287		$	1,427		$	1,291		$	57,555
	Charge-offs			(1,128	)		(422	)		(54	)		—			(1,604	)
	Recoveries on loans previously charged off			2,918			1,321			12			—			4,251
	Provision (negative provision)			(1,110	)		(1,761	)		(752	)		14			(3,609	)
	Ending balance		$	44,230		$	10,425		$	633		$	1,305		$	56,593
	Ending balance: individually evaluated for impairment		$	1,029		$	3,973		$	117		$	—		$	5,119
	Ending balance: collectively evaluated for impairment		$	43,201		$	6,452		$	516		$	1,305		$	51,474
	Non-PCI loans receivable:
	Ending balance		$	2,027,914		$	219,102		$	29,356		$	—		$	2,276,372
	Ending balance: individually evaluated for impairment		$	34,294		$	14,503		$	1,553		$	—		$	50,350
	Ending balance: collectively evaluated for impairment		$	1,993,620		$	204,599		$	27,803		$	—		$	2,226,022
Information on Impaired Loans, Disaggregated by Loan Class	The following tables provide information on impaired loans (excluding PCI loans), disaggregated by loan class, as of the dates indicated:
			Recorded			Unpaid Principal			With No			With an			Related			Average			Interest
			Investment			Balance			Related			Allowance			Allowance			Recorded			Income
									Allowance			Recorded						Investment			Recognized
									Recorded
									(In thousands)
	March 31, 2015
	Real estate loans:
	Commercial property
	Retail		$	5,963		$	6,133		$	3,496		$	2,467		$	189		$	5,990		$	72
	Hotel/motel			6,228			6,910			4,974			1,254			2,767			6,272			182
	Gas station			7,968			8,608			7,527			441			137			7,993			93
	Other			10,291			11,896			9,120			1,171			293			10,254			208
	Residential property			3,087			3,242			3,087			—			—			3,102			32
	Commercial and industrial loans:
	Commercial term			8,147			8,716			3,912			4,235			1,881			8,078			99
	Commercial lines of credit			2,092			2,210			442			1,650			8			2,439			7
	International loans			1,331			1,331			767			563			24			1,360			—
	Consumer loans			1,823			2,005			1,823			—			—			1,830			17
	Total Non-PCI loans		$	46,930		$	51,051		$	35,148		$	11,781		$	5,299		$	47,318		$	710
	December 31, 2014
	Real estate loans:
	Commercial property
	Retail		$	4,436		$	4,546		$	1,938		$	2,498		$	220		$	5,373		$	251
	Hotel/motel			5,835			6,426			4,581			1,254			1,828			4,583			398
	Gas station			8,974			9,594			8,526			448			150			11,281			787
	Other			10,125			11,591			8,890			1,235			319			10,579			885
	Residential property			3,127			3,268			3,127			—			—			2,924			115
	Commercial and industrial loans:
	Commercial term			7,614			8,133			2,999			4,615			2,443			9,458			566
	Commercial lines of credit			466			575			466			—			—			1,205			66
	International loans			3,546			3,546			2,628			918			286			1,736			33
	Consumer loans			1,742			1,907			1,742			—			—			1,651			59
	Total Non-PCI loans		$	45,865		$	49,586		$	34,897		$	10,968		$	5,246		$	48,790		$	3,160
Summary of Interest Foregone on Impaired Loans	The following is a summary of interest foregone on impaired loans (excluding PCI loans) for the periods indicated:
			Three Months Ended
			March 31			March 31
			2015			2014
			(In thousands)
	Interest income that would have been recognized had impaired loans performed in accordance with their original terms		$	740		$	1,213
	Less: Interest income recognized on impaired loans			(710	)		(764	)
	Interest foregone on impaired loans		$	30		$	449
Non-Accrual Loans, Disaggregated by Loan Class	The following table details nonaccrual loans (excluding PCI loans), disaggregated by loan class, as of the dates indicated:
			March 31			December 31
			2015			2014
			(In thousands)
	Real estate loans:
	Commercial property
	Retail		$	3,988		$	2,160
	Hotel/motel			4,431			3,835
	Gas station			5,023			3,478
	Other			5,548			4,961
	Residential property			1,537			1,588
	Commercial and industrial loans:
	Commercial term			5,867			7,052
	Commercial lines of credit			1,041			466
	Consumer loans			1,823			1,742
	Total nonaccrual Non-PCI loans		$	29,258		$	25,282
Non-Performing Assets	The following table details nonperforming assets (excluding PCI loans) as of the dates indicated:
			March 31			December 31
			2015			2014
			(In thousands)
	Nonaccrual Non-PCI loans		$	29,258		$	25,282
	Loans 90 days or more past due and still accruing			—			—
	Total nonperforming Non-PCI loans			29,258			25,282
	Other real estate owned			12,114			15,790
	Total nonperforming assets		$	41,372		$	41,072
Troubled Debt Restructurings, Disaggregated by Type of Concession and by Loan Type	The following table details TDRs (excluding PCI loans), disaggregated by concession type and by loan type, as of March 31, 2015 and December 31, 2014:
			Nonaccrual TDRs															Accrual TDRs
			Deferral			Deferral			Reduction			Extension			Total			Deferral			Deferral		Reduction		Extension		Total
			of			of			of			of						of			of		of		of
			Principal			Principal			Principal			Maturity						Principal			Principal		Principal		Maturity
						and			and												and		and
						Interest			Interest												Interest		Interest
															(In thousands)
	March 31, 2015
	Real estate loans:
	Commercial property
	Retail		$	—		$	—		$	—		$	2,003		$	2,003		$	304		$	—	$	—	$	—	$	304
	Hotel/motel			1,073			(64	)		—			—			1,009			1,802			—		—		—		1,802
	Gas station			3,033			—			—			—			3,033			352			—		—		—		352
	Other			932			1,766			407			20			3,125			2,318			—		771		1,373		4,462
	Residential property			729			—			—			—			729			—			—		—		306		306
	Commercial and industrial loans:
	Commercial term			12			(3	)		2,507			1,632			4,148			53			223		481		1,533		2,290
	Commercial lines of credit			220			—			124			98			442			1,650			—		—		—		1,650
	International loans			—			—			—			—			—			—			—		199		—		199
	Consumer loans			—			—			127			—			127			—			—		—		—		—
	Total Non-PCI loans		$	5,999		$	1,699		$	3,165		$	3,753		$	14,616		$	6,479		$	223	$	1,451	$	3,212	$	11,365
	December 31, 2014
	Real estate loans:
	Commercial property
	Retail		$	—		$	—		$	—		$	2,032		$	2,032		$	306		$	—	$	—	$	—	$	306
	Hotel/motel			1,115			(53	)		—			—			1,062			1,807			—		—		—		1,807
	Gas station			1,075			—			—			—			1,075			2,335			—		—		—		2,335
	Other			943			1,498			433			24			2,898			2,343			—		782		1,372		4,497
	Residential property			742			—			—			—			742			—			—		—		308		308
	Commercial and industrial loans:
	Commercial term			14			(1	)		2,556			1,481			4,050			57			226		567		1,358		2,208
	Commercial lines of credit			227			—			126			113			466			2,156			—		—		—		2,156
	International loans			—			—			—			—			—			—			—		200		—		200
	Consumer loans			—			—			131			—			131			—			—		—		—		—
	Total Non-PCI loans		$	4,116		$	1,444		$	3,246		$	3,650		$	12,456		$	9,004		$	226	$	1,549	$	3,038	$	13,817
Troubled Debt Restructurings, Disaggregated by Loan Class	The following table details TDRs (excluding PCI loans), disaggregated by loan class, for the three months ended March 31, 2015 and 2014:
			March 31, 2015									March 31, 2014
			Number of			Pre-Modification			Post-Modification			Number of			Pre-Modification			Post-Modification
			Loans			Outstanding			Outstanding			Loans			Outstanding			Outstanding
						Recorded			Recorded						Recorded			Recorded
						Investment			Investment						Investment			Investment
						(In thousands, except number of loans)
	Real estate loans:
	Commercial property
	Other (1)			—		$	—		$	—			1		$	943		$	943
	Commercial and industrial loans:
	Commercial term (2)			4			543			508			5			829			788
	Commercial lines of credit (3)			—			—			—			1			250			242
	Total Non-PCI loans			4		$	543		$	508			7		$	2,022		$	1,973
	(1)	Includes a modification of $943,000 through a payment deferral for the three months ended March 31, 2014.
	(2)	Includes modifications of $508,000 through extensions of maturity for the three months ended March 31, 2015, and modifications of $491,000 through a payment deferral, $107,000 through reductions of principal or accrued interest and $190,000 through an extension of maturity for the three months ended March 31, 2014
	(3)	Includes a modification of $242,000 through a payment deferral for the three months ended March 31, 2014.
Troubled Debt Restructurings that Defaulted Subsequent to Modifications Occurring Within Previous Twelve Months, Disaggregated by Loan Class	The following table details TDRs (excluding PCI loans) that defaulted subsequent to the modifications occurring within the previous twelve months, disaggregated by loan class, for the three months ended March 31, 2015 and 2014, respectively:
			Three Months Ended
			March 31, 2015						March 31, 2014
			Number of			Recorded			Number of			Recorded
			Loans			Investment			Loans			Investment
			(In thousands, except number of loans)
	Real estate loans:
	Commercial property
	Retail			1		$	1,832			1		$	310
	Hotel/motel			—			—			1			1,000
	Gas station			1			1,990			1			87
	Other			1			379			2			481
	Commercial and industrial loans:
	Commercial term			—			—			1			53
	Commercial lines of credit			1			124			—			—
	Consumer loans			—			—			1			149
	Total Non-PCI loans			4		$	4,325			7		$	2,080
Schedule of Changes in Carrying Value of PCI Loans	The following table summarizes the changes in carrying value of PCI loans during the year ended March 31, 2015:
			Carrying			Accretable
			Amount			Yield
			(In thousands)
	Balance at January 1, 2015		$	43,475		$	(11,025	)
	Accretion			843			843
	Payments received			(5,425	)		—
	Disposal/transfer to OREO			722			—
	Changes in expected cash flows, net			—			376
	Provision for credit losses			(110	)		—
	Balance at March 31, 2015		$	39,505		$	(9,806	)
Changes in Servicing Assets and Liabilities	Servicing Assets and liabilities
	The changes in servicing assets for the three months ended March 31, 2015 and 2014 were as follows:
			Three Months Ended March 31,
			2015			2014
			(In thousands)
	Servicing assets:
	Balance at beginning of period		$	13,773		$	6,833
	Addition related to sale of SBA loans			617			200
	Amortization			(1,069	)		(474	)
	Balance at end of period		$	13,321		$	6,559
	Servicing liabilities:
	Balance at beginning of period		$	5,971		$	33
	Amortization			(442	)		(3	)
	Balance at end of period		$	5,529		$	30
Non-PCI Loans [Member]
Credit Quality of Loan Portfolio	As of March 31, 2015 and December 31, 2014, pass/pass-watch, special mention and classified loans (excluding PCI loans), disaggregated by loan class, were as follows:
			Pass/Pass-Watch			Special Mention			Classified			Total
						(In thousands)
	March 31, 2015
	Real estate loans:
	Commercial property
	Retail		$	658,292		$	12,141		$	9,505		$	679,938
	Hotel/motel			425,710			42,938			13,312			481,960
	Gas station			330,319			9,861			6,618			346,798
	Other			800,758			9,087			10,862			820,707
	Construction			15,123			—			—			15,123
	Residential property			152,673			—			2,124			154,797
	Commercial and industrial loans:
	Commercial term			106,066			1,089			9,097			116,252
	Commercial lines of credit			95,482			—			2,279			97,761
	International loans			35,987			152			199			36,338
	Consumer loans			23,674			121			2,147			25,942
	Total Non-PCI loans		$	2,644,084		$	75,389		$	56,143		$	2,775,616
	December 31, 2014
	Real estate loans:
	Commercial property
	Retail		$	654,360		$	18,013		$	2,699		$	675,072
	Hotel/motel			397,437			46,365			10,697			454,499
	Gas station			345,775			8,899			7,566			362,240
	Other			822,037			9,543			10,546			842,126
	Construction			9,517			—			—			9,517
	Residential property			118,688			66			2,178			120,932
	Commercial and industrial loans:
	Commercial term			106,326			1,225			8,522			116,073
	Commercial lines of credit			92,312			993			555			93,860
	International loans			36,121			252			2,556			38,929
	Consumer loans			25,313			131			2,068			27,512
	Total Non-PCI loans		$	2,607,886		$	85,487		$	47,387		$	2,740,760
Analysis of Gross Loans, Disaggregated by Loan Class	The following is an aging analysis of gross loans (excluding PCI loans), disaggregated by loan class, as of the dates indicated:
			30-59 Days Past			60-89 Days Past			90 Days or			Total Past Due			Current			Total			Accruing 90
			Due			Due			More Past Due												Days or More
																					Past Due
												(In thousands)
	March 31, 2015
	Real estate loans:
	Commercial property
	Retail		$	1,943		$	6,031		$	2,950		$	10,924		$	669,014		$	679,938		$	—
	Hotel/motel			2,659			—			3,421			6,080			475,880			481,960			—
	Gas station			580			480			4,088			5,148			341,650			346,798			—
	Other			1,770			278			3,544			5,592			815,115			820,707			—
	Construction			—			—			—			—			15,123			15,123			—
	Residential property			—			—			547			547			154,250			154,797			—
	Commercial and industrial loans:
	Commercial term			(30	)		87			3,062			3,119			113,133			116,252			—
	Commercial lines of credit			1,407			—			819			2,226			95,535			97,761			—
	International loans			131			—			—			131			36,207			36,338			—
	Consumer loans			—			239			348			587			25,355			25,942			—
	Total Non-PCI loans		$	8,460		$	7,115		$	18,779		$	34,354		$	2,741,262		$	2,775,616		$	—
	December 31, 2014
	Real estate loans:
	Commercial property
	Retail		$	1,554		$	281		$	1,920		$	3,755		$	671,317		$	675,072		$	—
	Hotel/motel			1,531			2,340			433			4,304			450,195			454,499			—
	Gas station			2,991			1,113			353			4,457			357,783			362,240			—
	Other			1,674			2,156			1,142			4,972			837,154			842,126			—
	Construction			—			—			—			—			9,517			9,517			—
	Residential property			167			—			687			854			120,078			120,932			—
	Commercial and industrial loans:
	Commercial term			1,107			490			2,847			4,444			111,629			116,073			—
	Commercial lines of credit			—			—			227			227			93,633			93,860			—
	International loans			200			—			—			200			38,729			38,929			—
	Consumer loans			489			349			248			1,086			26,426			27,512			—
	Total Non-PCI loans		$	9,713		$	6,729		$	7,857		$	24,299		$	2,716,461		$	2,740,760		$	—
PCI Loans [Member]
Credit Quality of Loan Portfolio	As of March 31, 2015, pass/pass-watch, special mention and classified PCI loans, disaggregated by loan class, were as follows:
			Pass/Pass-Watch			Special Mention			Classified			Total			Allowance			Total
																		PCI Loans
									(In thousands)
	March 31, 2015
	Real estate loans:
	Commercial property
	Retail		$	1,201		$	168		$	9,196		$	10,565		$	404		$	10,161
	Hotel/motel			252			—			11,468			11,720			146			11,574
	Gas station			—			178			6,263			6,441			555			5,886
	Other			—			—			10,174			10,174			167			10,007
	Residential property			—			—			1,716			1,716			46			1,670
	Commercial and industrial loans:
	Commercial term			—			—			281			281			118			163
	Consumer loans			—			—			44			44			—			44
	Total PCI loans		$	1,453		$	346		$	39,142		$	40,941		$	1,436		$	39,505
	December 31, 2014
	Real estate loans:
	Commercial property
	Retail		$	1,207		$	219		$	7,109		$	8,535		$	401		$	8,134
	Hotel/motel			—			—			7,682			7,682			99			7,583
	Gas station			—			1,242			6,503			7,745			302			7,443
	Other			—			—			5,796			5,796			65			5,731
	Residential property			—			—			14,371			14,371			28			14,343
	Commercial and industrial loans:
	Commercial term			—			—			327			327			131			196
	Consumer loans			—			—			45			45			—			45
	Total PCI loans		$	1,207		$	1,461		$	41,833		$	44,501		$	1,026		$	43,475
Analysis of Gross Loans, Disaggregated by Loan Class	The following table presents a summary of the borrowers’ underlying payment status of PCI loans as of the dates indicated:
			30-59 Days Past			60-89 Days Past			90 Days or			Total Past Due			Current			Total			Allowance		Total
			Due			Due			More Past Due												Amount		PCI Loans
												(In thousands)
	March 31, 2015
	Real estate loans:
	Commercial property
	Retail		$	13		$	—		$	6,424		$	6,437		$	4,128		$	10,565		$	404	$	10,161
	Hotel/motel			—			—			6,801			6,801			4,919			11,720			146		11,574
	Gas station			831			—			3,868			4,699			1,742			6,441			555		5,886
	Other			62			—			9,719			9,781			393			10,174			167		10,007
	Residential property			—			—			1,056			1,056			660			1,716			46		1,670
	Commercial and industrial loans:
	Commercial term			—			6			110			116			165			281			118		163
	Consumer loans			—			16			28			44			—			44			—		44
	Total PCI loans		$	906		$	22		$	28,006		$	28,934		$	12,007		$	40,941		$	1,436	$	39,505
	December 31, 2014
	Real estate loans:
	Commercial property
	Retail		$	93		$	287		$	3,815		$	4,195		$	4,340		$	8,535		$	401	$	8,134
	Hotel/motel			312			—			2,490			2,802			4,880			7,682			99		7,583
	Gas station			1,139			1,053			3,178			5,370			2,375			7,745			302		7,443
	Other			—			—			5,235			5,235			561			5,796			65		5,731
	Residential property			—			—			13,594			13,594			777			14,371			28		14,343
	Commercial and industrial loans:
	Commercial term			30			—			135			165			162			327			131		196
	Consumer loans			—			17			28			45			—			45			—		45
	Total PCI loans		$	1,574		$	1,357		$	28,475		$	31,406		$	13,095		$	44,501		$	1,026	$	43,475

Accumulated_Other_Comprehensiv1

Accumulated Other Comprehensive Income (Tables)	3 Months Ended
	Mar. 31, 2015
Equity [Abstract]
Activity in Accumulated Other Comprehensive Income	Activity in accumulated other comprehensive income for the three months ended March 31, 2015 and 2014 was as follows:
		Unrealized Gains			Unrealized Gains
		and Losses on			and Losses on
		Available-for-Sale			Interest-Only		Tax Benefit
		Securities			Strip		(Expense)			Total
					(In thousands)
	For the three months ended March 31, 2015
	Balance at beginning of period	$	(985	)	$	16	$	1,432		$	463
	Other comprehensive income (loss) before reclassification		12,043			—		(4,123	)		7,920
	Reclassification from accumulated other comprehensive income		(2,184	)		—		—			(2,184	)
	Period change		9,859			—		(4,123	)		5,736
	Balance at end of period	$	8,874		$	16	$	(2,691	)	$	6,199
	For the three months ended March 31, 2014
	Balance at beginning of period	$	(18,187	)	$	16	$	8,791		$	(9,380	)
	Other comprehensive income (loss) before reclassification		8,098			1		(2,807	)		5,292
	Reclassification from accumulated other comprehensive income		(1,421	)		—		—			(1,421	)
	Period change		6,677			1		(2,807	)		3,871
	Balance at end of period	$	(11,510	)	$	17	$	5,984		$	(5,509	)

Regulatory_Matters_Tables

Regulatory Matters (Tables)	3 Months Ended
	Mar. 31, 2015
Banking and Thrift [Abstract]
Capital Ratios of Hanmi Financial and Bank	The capital ratios of Hanmi Financial and the Bank as of March 31, 2015 and December 31, 2014 were as follows:
							Minimum					Minimum to Be
							Regulatory					Categorized as
		Actual					Requirement					“Well Capitalized”
		Amount		Ratio			Amount		Ratio			Amount		Ratio
		(In thousands)
	March 31, 2015
	Total capital (to risk-weighted assets):
	Hanmi Financial	$	493,598		15.4	%	$	252,777		8	%		N/A		N/A
	Hanmi Bank	$	482,965		15.33	%	$	252,348		8	%	$	315,435		10	%
	Tier 1 capital (to risk-weighted assets):
	Hanmi Financial	$	454,582		14.15	%	$	189,583		6	%		N/A		N/A
	Hanmi Bank	$	443,946		14.08	%	$	189,261		6	%	$	252,348		8	%
	Common equity Tier 1 capital (to risk-weighted assets)
	Hanmi Financial	$	454,582		14.15	%	$	142,187		4.5	%		N/A		N/A
	Hanmi Bank	$	443,946		14.08	%	$	141,946		4.5	%	$	205,033		6.5	%
	Tier 1 capital (to average assets):
	Hanmi Financial	$	454,582		10.78	%	$	165,895		4	%		N/A		N/A
	Hanmi Bank	$	443,946		10.72	%	$	165,710		4	%	$	207,137		5	%
	December 31, 2014
	Total capital (to risk-weighted assets):
	Hanmi Financial	$	493,598		15.89	%	$	248,501		8	%		N/A		N/A
	Hanmi Bank	$	470,934		15.18	%	$	248,157		8	%	$	310,196		10	%
	Tier 1 capital (to risk-weighted assets):
	Hanmi Financial	$	454,582		14.63	%	$	124,250		4	%		N/A		N/A
	Hanmi Bank	$	431,971		13.93	%	$	124,078		4	%	$	186,118		6	%
	Tier 1 capital (to average assets):
	Hanmi Financial	$	454,582		10.91	%	$	166,600		4	%		N/A		N/A
	Hanmi Bank	$	431,971		10.39	%	$	166,332		4	%	$	207,915		5	%

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Assets and Liabilities Measured at Fair Value on Recurring Basis	As of March 31, 2015 and December 31, 2014, assets and liabilities measured at fair value on a recurring basis are as follows:
			Level 1		Level 2			Level 3
			Quoted Prices in		Significant			Significant		Balance
			Active Markets		Observable			Unobservable
			for Identical		Inputs with No			Inputs
			Assets		Active Market
					with Identical
					Characteristics
			(In thousands)
	March 31, 2015
	Assets:
	Securities available for sale:
	Mortgage-backed securities		$	—	$	492,896		$	—	$	492,896
	Collateralized mortgage obligations			—		165,405			—		165,405
	U.S. government agency securities			63,355		—			—		63,355
	SBA loan pools securities			—		75,027			—		75,027
	Municipal bonds-tax exempt			—		3,676			—		3,676
	Municipal bonds-taxable			—		17,042			—		17,042
	Corporate bonds			—		16,984			—		16,984
	U.S. treasury securities			163		—			—		163
	Other securities			—		23,100			—		23,100
	Equity securities			—		—			416		416
	Total securities available for sale		$	63,518	$	794,130		$	416	$	858,064
	December 31, 2014
	Assets:
	Securities available for sale:
	Mortgage-backed securities		$	—	$	573,286		$	—	$	573,286
	Collateralized mortgage obligations			—		188,047			—		188,047
	U.S. government agency securities			128,207		—			—		128,207
	SBA loan pools securities			—		109,447			—		109,447
	Municipal bonds-tax exempt			—		3,681			709		4,390
	Municipal bonds-taxable			—		16,922			—		16,922
	Corporate bonds			—		16,948			—		16,948
	U.S. treasury securities			163		—			—		163
	Other securities			—		22,893			—		22,893
	Equity securities			—		—			414		414
	Total securities available for sale		$	128,370	$	931,224		$	1,123	$	1,060,717
Reconciliation and Income Statement Classification of Gains and Losses for All Assets and Liabilities	The table below presents a reconciliation and income statement classification of gains and losses for all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the three months ended March 31, 2015:
			Beginning		Purchases,			Realized		Unrealized		Ending
			Balance as of		Issuances			Gains or		Gains or		Balance as of
			January 1,		and			Losses		Losses		March 31,
			2015		Settlement			in Earnings		in Other		2015
										Comprehensive
										Income
					(In thousands)
	Assets:
	Municipal bonds-tax exempt (1)		$	709	$	(709	)	$	—	$	—	$	—
	Equity securities (2)			414		—			—		2		416
	(1)	A zero coupon tax credit municipal bond matured during the first quarter of 2015.
	(2)	Reflects two equity securities that are not actively traded. The fair value of one equity security with a fair value of $216,000 was computed using valuation multiples (price to book and price to earnings) derived from market transactions for comparable companies. The other equity security with a fair value of $200,000 was computed using valuation multiples (price to book and price to earnings) derived from 1) market transactions for comparable companies, and 2) publicly-traded comparable companies.
Assets and Liabilities Measured at Fair Value on Non-Recurring Basis	As of March 31, 2015 and December 31, 2014, assets and liabilities measured at fair value on a non-recurring basis are as follows:
			Level 1		Level 2			Level 3
			Quoted Prices in		Significant			Significant		Loss During the
			Active Markets		Observable			Unobservable		Three Months Ended
			for Identical		Inputs With No			Inputs		31-Mar-15
			Assets		Active Market
					With  Identical
					Characteristics
					(In thousands)
	March 31, 2015
	Assets:
	Impaired loans (excluding PCI loans) (1)		$	—	$	32,116		$	956	$	1,200
	Other real estate owned (2)			—		12,114			—		—
			Level 1		Level 2			Level 3
			Quoted Prices in		Significant			Significant		Loss During the
			Active Markets		Observable			Unobservable		Twelve Months Ended
			for Identical		Inputs With No			Inputs		31-Dec-14
			Assets		Active Market
					With Identical
					Characteristics
					(In thousands)
	December 31, 2014
	Assets:
	Impaired loans (3)		$	—	$	32,171		$	781	$	2,774
	Other real estate owned (4)			—		15,790			—		—
	(1)	Include real estate loans of $30.1 million, commercial and industrial loans of $1.1 million, and consumer loans of $1.8 million.
	(2)	Includes properties from the foreclosure of commercial property loans of $12.0 million and residential property loans of $163,000.
	(3)	Include real estate loans of $30.0 million, commercial and industrial loans of $1.2 million, and consumer loans of $1.7 million.
	(4)	Includes properties from the foreclosure of commercial property loans of $13.2 million and residential property loans of 2.6 million.
Estimated Fair Values of Financial Instruments	The estimated fair values of financial instruments were as follows:
			March 31, 2015
			Carrying		Fair Value
			Amount		Level 1			Level 2		Level 3
					(In thousands)
	Financial assets:
	Cash and cash equivalents		$	182,054	$	182,054		$	—	$	—
	Securities available for sale			858,064		63,518			794,130		416
	Loans receivable, net of allowance for loan losses			2,767,080		—			—		2,772,612
	Loans held for sale			8,677		—			8,677		—
	Accrued interest receivable			9,238		9,238			—		—
	Servicing assets			13,321		—			—		13,321
	Investment in FHLB stock			17,581		17,581			—		—
	Investment in FRB stock			12,273		12,273			—		—
	Financial liabilities:
	Noninterest-bearing deposits			1,064,695		—			1,064,695		—
	Interest-bearing deposits			2,487,981		—			—		2,500,027
	Servicing liabilities			5,529		—			—		5,529
	Borrowings			18,582		—			—		18,582
	Accrued interest payable			3,497		3,497			—		—
	Off-balance sheet items:
	Commitments to extend credit			297,912		—			—		297,912
	Standby letters of credit			6,299		—			—		6,299
			31-Dec-14
			Carrying		Fair Value
			Amount		Level 1			Level 2		Level 3
					(In thousands)
	Financial assets:
	Cash and cash equivalents		$	158,320	$	158,320		$	—	$	—
	Securities available for sale			1,060,717		128,370			931,224		1,123
	Loans receivable, net of allowance for loan losses			2,735,932		—			—		2,738,401
	Loans held for sale			5,451		—			5,451		—
	Accrued interest receivable			9,749		9,749			—		—
	Servicing assets			13,773		—			—		13,773
	Investment in FHLB stock			17,580		17,580			—		—
	Investment in FRB stock			12,273		12,273			—		—
	Financial liabilities:
	Noninterest-bearing deposits			1,022,972		—			1,022,972		—
	Interest-bearing deposits			2,533,774		—			—		2,528,304
	Servicing liabilities			5,971		—			—		5,971
	Borrowings			168,544		—			—		168,544
	Accrued interest payable			3,450		3,450			—		—
	Off-balance sheet items:
	Commitments to extend credit			309,584		—			—		309,584
	Standby letters of credit			8,982		—			—		8,982

ShareBased_Compensation_Tables

Share-Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Unrecognized Share-Based Compensation Expense	As of March 31, 2015, unrecognized share-based compensation expense was as follows:
						Average Expected
			Unrecognized			Recognition
			Expense			Period
			(In thousands)
	Stock option awards		$	1,137			1.6 years
	Restricted stock awards			2,360			2.0 years
	Total unrecognized share-based compensation expense		$	3,497			1.8 years
Summary of Stock Options Outstanding under Plans	The table below provides stock option information for the three months ended March 31, 2015:
						Weighted-		Weighted-		Aggregate
						Average		Average		Intrinsic
						Exercise		Remaining		Value of
			Number of			Price Per		Contractual		In-the-Money
			Shares			Share		Life		Options
			(In thousands, except share and per share data)
	Options outstanding at beginning of period			603,872		$	23.78		8.3 years	$	2,853	(1)
	Options exercised			(19,581	)	$	14.2		8.0 years
	Options forfeited			(501	)	$	12.54		7.7 years
	Options expired			(125	)	$	144		1.1 years
	Options outstanding at end of period			583,665		$	24.09		8.0 years	$	2,383	(2)
	Options exercisable at end of period			205,058		$	35.12		6.8 years	$	1,158	(2)
	(1)	Intrinsic value represents the excess of the closing stock price on the last trading day of the period, which was $21.81 as of December 31, 2014, 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 $21.15 as of March 31, 2015, over the exercise price, multiplied by the number of options.
Schedule of Restricted Stock Awards under 2013 Plan	The table below provides information for restricted stock awards for the three months ended March 31, 2015:
			Number of			Weighted-
			Shares			Average
						Grant Date
						Fair Value
						Per Share
	Restricted stock at beginning of period			173,222		$	19.58
	Restricted stock granted			3,850		$	20.33
	Restricted stock vested			(2,000	)	$	24.45
	Restricted stock at end of period			175,072		$	19.55

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Reconciliation of Components Used to Derive Basic and Diluted EPS	The following table is a reconciliation of the components used to derive basic and diluted EPS for the periods indicated:
		Three Months Ended March 31,
		2015						2014
				Weighted-						Weighted-
		Net		Average		Per		Net		Average		Per
		Income		Shares		Share		Income		Shares		Share
		(Numerator)		(Denominator)		Amount		(Numerator)		(Denominator)		Amount
		(In thousands, except share and per share data)
	Basic EPS
	Income from continuing operations, net of taxes	$	11,054		31,747,299	$	0.35	$	10,969		31,659,705	$	0.35
	Income from discontinued operations, net of taxes		—		31,747,299		—		22		31,659,705		—
	Basic EPS	$	11,054		31,747,299	$	0.35	$	10,991		31,659,705	$	0.35
	Effect of dilutive securities - options and unvested restricted stock		—		279,424		—		—		274,458		—
	Diluted EPS
	Income from continuing operations, net of taxes	$	11,054		32,026,723	$	0.35	$	10,969		31,934,163	$	0.34
	Income from discontinued operations, net of taxes		—		32,026,723		—		22		31,934,163		—
	Diluted EPS	$	11,054		32,026,723	$	0.35	$	10,991		31,934,163	$	0.34

OffBalance_Sheet_Commitments_T

Off-Balance Sheet Commitments (Tables)	3 Months Ended
	Mar. 31, 2015
Risks and Uncertainties [Abstract]
Distribution of Undisbursed Loan Commitments	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,		December 31,
		2015		2014
		(In thousands)
	Commitments to extend credit	$	297,912	$	309,584
	Standby letters of credit		6,299		8,982
	Commercial letters of credit		4,590		7,046
	Total undisbursed loan commitments	$	308,801	$	325,612

Acquisition_Additional_Informa

Acquisition - Additional Information (Detail) (USD $)	0 Months Ended	3 Months Ended		12 Months Ended
	Aug. 31, 2014	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
		Branches
Loans At Acquisition Date [Line Items]
Number of branch locations		49
Merger and integration expense		$1,611,000	$85,000
Core deposit intangible	2,200,000
Core deposit intangible, useful life	10 years
Amortization expense of core deposit intangible		95,000
Certificates of deposit	7,400,000
Amortization of certificates of deposit		1,600,000
Discount on subordinated debentures	8,300,000
Amortization of subordinated debentures		38,000
Effect of Change in Accounting Principle [Member]
Loans At Acquisition Date [Line Items]
Bargain purchase gain, net of deferred taxes	8,000,000
Central Bancorp, Inc [Member]
Loans At Acquisition Date [Line Items]
Consideration paid for redemption of preferred stock	28,675,000
Common stock, price per share after acquisition	$17.64
Consideration paid	50,000,000
Total assets acquired	1,267,921,000
Total liabilities assumed	1,174,669,000
Total identifiable net assets	93,252,000
Loans	297,272,000
Total deposits	1,098,997,000
Number of branch locations		23
Bargain purchase gain, net of deferred taxes	14,577,000
Merger and integration expense		1,600,000		6,600,000
Core deposit intangible	$2,213,000

Acquisition_Summary_of_Purchas

Acquisition - Summary of Purchase Price Allocation Reported (Detail) (USD $)	0 Months Ended
	Aug. 31, 2014	Aug. 31, 2014
Assets acquired:
Core deposit intangible	$2,200,000	$2,200,000
Central Bancorp, Inc [Member]
Consideration paid:
CBI stockholders	50,000,000
Redemption of preferred and cumulative unpaid dividends	28,675,000
Total consideration paid:	78,675,000
Assets acquired:
Cash and cash equivalents	197,209,000	197,209,000
Securities available for sale	663,497,000	663,497,000
Loans	297,272,000	297,272,000
Premises and equipment	17,925,000	17,925,000
Other real estate owned	25,952,000	25,952,000
Income tax assets, net	12,011,000	12,011,000
Core deposit intangible	2,213,000	2,213,000
FDIC loss sharing assets	11,413,000	11,413,000
Bank-owned life insurance	18,296,000	18,296,000
Servicing assets	7,497,000	7,497,000
Other assets	14,636,000	14,636,000
Total assets acquired	1,267,921,000	1,267,921,000
Liabilities assumed:
Deposits	1,098,997,000	1,098,997,000
Subordinated debentures	18,473,000	18,473,000
Rescinded stock obligation	15,485,000	15,485,000
FHLB advances	10,000,000	10,000,000
Servicing liabilities	6,039,000	6,039,000
Other liabilities	25,675,000	25,675,000
Total liabilities assumed	1,174,669,000	1,174,669,000
Total identifiable net assets	93,252,000	93,252,000
Bargain purchase gain, net of deferred taxes	$14,577,000

Acquisition_Summary_of_Accreta

Acquisition - Summary of Accretable Yield on Purchased Credit Impaired Loans Acquired (Detail) (USD $)	Aug. 31, 2014
In Thousands, unless otherwise specified
Payables and Accruals [Abstract]
Undiscounted contractual cash flows	$93,623
Nonaccretable discount	-17,421
Undiscounted cash flow to be collected	76,202
Estimated fair value of PCI loans	65,346
Accretable yield	$10,856

Acquisition_Business_Acquisiti

Acquisition - Business Acquisition, Unaudited Proforma Result of Operation Information (Detail) (Central Bancorp, Inc [Member], USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Central Bancorp, Inc [Member]
Loans At Acquisition Date [Line Items]
Pro forma revenues (net interest income plus noninterest income)	$53,531	$56,245
Pro forma net income from continuing operations	$12,611	$16,280
Pro forma earnings per share from continuing operations:
Basic	$0.40	$0.51
Diluted	$0.39	$0.51

Accounting_for_Investments_in_2

Accounting for Investments in Qualified Affordable Housing Projects - Additional Information (Detail) (USD $)	0 Months Ended	3 Months Ended		12 Months Ended
	Jan. 01, 2012	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Adjusted Earnings Before Interest Taxes Depreciation And Amortization And Other Non Cash Items [Abstract]
Cumulative effect of retrospective application of accounting principle	$1,100,000
Decrease in net income			44,000
Impairment of investments		0		0
Investment in low income housing		20,700,000		21,300,000
Unfunded commitments on low income housing		9,900,000		11,900,000
Income tax expense		584,000	171,000
Tax credit and other benefit received from tax expenses		$829,000	$255,000

Accounting_for_Investments_in_3

Accounting for Investments in Qualified Affordable Housing Projects - Summary of Change in Accounting Principle on Balance Sheets (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Assets
Cash and cash equivalents	$182,054	$158,320	$204,384	$179,357
Available-for-Sale, Estimated Fair Value	858,064	1,060,717	520,990
Loans receivable	2,767,080	2,735,832	2,221,520
Income tax assets	86,478	84,371	53,500
Other assets			95,364
Total assets	4,084,015	4,232,443	3,095,758
Liabilities and Stockholders' Equity
Liabilities	3,616,545	3,779,056	2,682,247
Stockholders' equity	467,470	453,387	413,511	400,077
Total liabilities and stockholders' equity	4,084,015	4,232,443	3,095,758
As Previously Reported [Member]
Assets
Cash and cash equivalents			204,384	179,357
Available-for-Sale, Estimated Fair Value			520,990
Loans receivable			2,221,520
Income tax assets			53,227
Other assets			96,841
Total assets			3,096,962
Liabilities and Stockholders' Equity
Liabilities			2,682,247
Stockholders' equity			414,715
Total liabilities and stockholders' equity			3,096,962
Effect of Change in Accounting Principle [Member]
Assets
Income tax assets			273
Other assets			-1,477
Total assets			-1,204
Liabilities and Stockholders' Equity
Stockholders' equity			-1,204
Total liabilities and stockholders' equity			($1,204)

Accounting_for_Investments_in_4

Accounting for Investments in Qualified Affordable Housing Projects - Summary of Change in Accounting Principle on Statements of Income (Detail) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Interest and dividend income	$41,654	$30,367
Interest expense	3,981	3,269
Negative provision for credit losses	-1,985	-3,300
Net interest income before provision for credit losses	37,673	27,098
Noninterest income	10,634	6,214
Noninterest expense	31,704	17,799
Income from continuing operations before provision for income taxes	18,588	18,813
(Benefit) provision for income taxes	7,534	7,844
Income from continuing operations	11,054	10,969
Earnings per share from continuing operations
Basic	$0.35	$0.35
Diluted	$0.35	$0.34
As Previously Reported [Member]
Interest and dividend income		30,367
Interest expense		3,269
Negative provision for credit losses		-3,300
Net interest income before provision for credit losses		30,398
Noninterest income		6,214
Noninterest expense		17,961
Income from continuing operations before provision for income taxes		18,651
(Benefit) provision for income taxes		7,638
Income from continuing operations		11,013
Earnings per share from continuing operations
Basic		$0.35
Diluted		$0.35
Effect of Change in Accounting Principle [Member]
Noninterest expense		-162
Income from continuing operations before provision for income taxes		162
(Benefit) provision for income taxes		206
Income from continuing operations		($44)
Earnings per share from continuing operations
Diluted		($0.01)

Accounting_for_Investments_in_5

Accounting for Investments in Qualified Affordable Housing Projects - Summary of Change in Accounting Principle on Statements of Cash Flows (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Cash flows from operating activities:
Net income	$11,054	$10,991
Total adjustment in net income		12,274
Net cash provided by operating activities	-5,007	23,265
Cash flows from investing activities:
Net cash provided by investing activities	185,550	2,418
Cash flows from financing activities:
Net cash used in financing activities	-156,809	-656
Net increase in cash and cash equivalents	23,734	25,027
Cash and cash equivalents at beginning of year	158,320	179,357
Cash and cash equivalents at end of period	182,054	204,384
As Previously Reported [Member]
Cash flows from operating activities:
Net income		11,035
Total adjustment in net income		12,230
Net cash provided by operating activities		23,265
Cash flows from investing activities:
Net cash provided by investing activities		2,418
Cash flows from financing activities:
Net cash used in financing activities		-656
Net increase in cash and cash equivalents		25,027
Cash and cash equivalents at beginning of year		179,357
Cash and cash equivalents at end of period		204,384
Effect of Change in Accounting Principle [Member]
Cash flows from operating activities:
Net income		-44
Total adjustment in net income		$44

Sale_of_Insurance_Subsidiaries2

Sale of Insurance Subsidiaries and Discontinued Operations - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015	Jun. 30, 2014	Mar. 31, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total assets			$5,595,000
Net assets			2,491,000
Net loss from discontinued operations		-444,000	22,000
Income from discontinued operation per diluted share	$0	$0.01	$0
Gain on disposal	51,000
Income tax benefit from operating loss	11,000
Capital gain tax	470,000
Operating loss	-14,000		37,000
Noninterest income	10,634,000		6,214,000
Noninterest expense	31,704,000		17,799,000
Chun Ha and All World To Chunha Holdings Corporation [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total sale price	3,500,000
Sale consideration received	2,000,000
Consideration due	1,500,000
Discontinued operations held for sale, Description	The total sales price was $3.5 million, of which $2.0 million was paid upon signing. The remaining $1.5 million will be payable in three equal installments on each anniversary of the closing date through June 30, 2017.
Number of installments payable	3
Number of subsidiaries sold	2
Total assets		5,600,000
Net assets		3,300,000
Discontinued operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Noninterest income			1,400,000
Noninterest expense			$1,400,000

Sale_of_Insurance_Subsidiaries3

Sale of Insurance Subsidiaries and Discontinued Operations - Summarized Financial Information of Discontinued Operations (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Jun. 30, 2014	Mar. 31, 2014
Discontinued Operations and Disposal Groups [Abstract]
Cash and cash equivalents			$1,628
Premises and equipment, net			73
Other intangible assets, net			1,130
Other assets			2,764
Total assets			5,595
Income tax payable			1,319
Accrued expenses and other liabilities			1,785
Total liabilities			3,104
Net assets of discontinued operations			2,491
Noninterest income	-14		37
Provision for income taxes			15
Income from discontinued operations		($444)	$22

Investment_Securities_Summary_

Investment Securities - Summary of Investment Securities Available for Sale (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$849,190	$1,061,703
Gross Unrealized Gain	11,038	3,980
Gross Unrealized Loss	2,164	4,966
Estimated Fair Value	858,064	1,060,717	520,990
Collateralized mortgage obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	164,163	188,704
Gross Unrealized Gain	1,719	417
Gross Unrealized Loss	477	1,074
Estimated Fair Value	165,405	188,047
Municipal bonds-tax exempt [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	3,604	4,319
Gross Unrealized Gain	72	71
Estimated Fair Value	3,676	4,390
Municipal bonds-taxable [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	16,562	16,615
Gross Unrealized Gain	561	398
Gross Unrealized Loss	81	91
Estimated Fair Value	17,042	16,922
Corporate bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	17,018	17,018
Gross Unrealized Gain	14	2
Gross Unrealized Loss	48	72
Estimated Fair Value	16,984	16,948
Mortgage-backed securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	485,112	571,678
Gross Unrealized Gain	8,329	2,811
Gross Unrealized Loss	545	1,203
Estimated Fair Value	492,896	573,286
U.S. government agency securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	63,967	129,857
Gross Unrealized Gain	12	172
Gross Unrealized Loss	624	1,822
Estimated Fair Value	63,355	128,207
SBA loan pool securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	75,236	109,983
Gross Unrealized Gain	70	52
Gross Unrealized Loss	279	588
Estimated Fair Value	75,027	109,447
U.S treasury securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	162	163
Gross Unrealized Gain	1
Estimated Fair Value	163	163
Other securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	22,916	22,916
Gross Unrealized Gain	260	57
Gross Unrealized Loss	76	80
Estimated Fair Value	23,100	22,893
Equity securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	450	450
Gross Unrealized Loss	34	36
Estimated Fair Value	$416	$414

Investment_Securities_Schedule

Investment Securities - Schedule of Amortized Cost and Estimated Fair Value of Investment Securities by Contractual Maturity (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
In Thousands, unless otherwise specified
Summary of Investment Holdings [Line Items]
Available-for-Sale Within one year, Amortized Cost	$11,995
Available-for-Sale Over one year through five years, Amortized Cost	11,341
Available-for-Sale Over five years through ten years, Amortized Cost	88,960
Available-for-Sale Over ten years, Amortized Cost	64,253
Available-for-Sale, Amortized Cost	849,190	1,061,703
Available-for-Sale Within one year, Estimated Fair Value	11,948
Available-for-Sale Over one year through five years, Estimated Fair Value	11,363
Available-for-Sale Over five years through ten years, Estimated Fair Value	89,001
Available-for-Sale Over ten years, Estimated Fair Value	63,935
Available-for-Sale, Estimated Fair Value	858,064	1,060,717	520,990
Collateralized mortgage obligations [Member]
Summary of Investment Holdings [Line Items]
Available-for-Sale, Amortized Cost	164,163	188,704
Available-for-Sale, Estimated Fair Value	165,405	188,047
Mortgage-backed securities [Member]
Summary of Investment Holdings [Line Items]
Available-for-Sale, Amortized Cost	485,112	571,678
Available-for-Sale, Estimated Fair Value	492,896	573,286
Other securities [Member]
Summary of Investment Holdings [Line Items]
Available-for-Sale, Amortized Cost	22,916	22,916
Available-for-Sale, Estimated Fair Value	23,100	22,893
Equity securities [Member]
Summary of Investment Holdings [Line Items]
Available-for-Sale, Amortized Cost	450	450
Available-for-Sale, Estimated Fair Value	$416	$414

Investment_Securities_Addition

Investment Securities - Additional Information (Detail) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013
Investment Securities [Line Items]
Other-than-temporary impairment charge	$0		$0
Impairment charges on securities in continuous unrealized loss position for 12 months or longer	0		0
Net realized gain (loss) on sale of investment securities	2,184,000	1,421,000
Recognized in earnings resulting from the sale of investment securities	535,000	59,000	535,000	59,000
Investment securities available-for-sale, market values	858,064,000	520,990,000	1,060,717,000
Securities Pledged as Collateral [Member]
Investment Securities [Line Items]
Investment securities available-for-sale, market values	$73,500,000		$76,200,000

Investment_Securities_Availabl

Investment Securities - Available for Sale Securities, Continuous Unrealized Loss Position, Fair value (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified	Security	Security
Summary of Investment Holdings [Line Items]
Available-for-Sale Within One Year, Gross Unrealized Loss	$314	$833
Available-for-Sale Within One Year, Estimated Fair Value	104,560	276,192
Available-for-Sale Within One Year, Number of Securities	37	60
Available-for-Sale More than One Year, Gross Unrealized Loss	1,850	4,133
Available-for-Sale More than One Year, Estimated Fair Value	106,067	184,458
Available-for-Sale More than One Year, Number of Securities	41	73
Available-for-Sale, Gross Unrealized Loss	2,164	4,966
Available-for-Sale, Estimated Fair Value	210,627	460,650
Available-for-Sale, Number of Securities	78	133
Municipal bonds-taxable [Member]
Summary of Investment Holdings [Line Items]
Available-for-Sale Within One Year, Gross Unrealized Loss	2
Available-for-Sale Within One Year, Estimated Fair Value	1,517
Available-for-Sale Within One Year, Number of Securities	2
Available-for-Sale More than One Year, Gross Unrealized Loss	79	91
Available-for-Sale More than One Year, Estimated Fair Value	802	5,538
Available-for-Sale More than One Year, Number of Securities	1	5
Available-for-Sale, Gross Unrealized Loss	81	91
Available-for-Sale, Estimated Fair Value	2,319	5,538
Available-for-Sale, Number of Securities	3	5
Collateralized mortgage obligations [Member]
Summary of Investment Holdings [Line Items]
Available-for-Sale Within One Year, Gross Unrealized Loss	51	350
Available-for-Sale Within One Year, Estimated Fair Value	34,752	78,191
Available-for-Sale Within One Year, Number of Securities	9	21
Available-for-Sale More than One Year, Gross Unrealized Loss	426	724
Available-for-Sale More than One Year, Estimated Fair Value	30,146	33,308
Available-for-Sale More than One Year, Number of Securities	12	13
Available-for-Sale, Gross Unrealized Loss	477	1,074
Available-for-Sale, Estimated Fair Value	64,898	111,499
Available-for-Sale, Number of Securities	21	34
Mortgage-backed securities [Member]
Summary of Investment Holdings [Line Items]
Available-for-Sale Within One Year, Gross Unrealized Loss	88	288
Available-for-Sale Within One Year, Estimated Fair Value	29,430	102,704
Available-for-Sale Within One Year, Number of Securities	13	21
Available-for-Sale More than One Year, Gross Unrealized Loss	457	915
Available-for-Sale More than One Year, Estimated Fair Value	23,906	50,625
Available-for-Sale More than One Year, Number of Securities	9	19
Available-for-Sale, Gross Unrealized Loss	545	1,203
Available-for-Sale, Estimated Fair Value	53,336	153,329
Available-for-Sale, Number of Securities	22	40
U.S. government agency securities [Member]
Summary of Investment Holdings [Line Items]
Available-for-Sale Within One Year, Gross Unrealized Loss	127
Available-for-Sale Within One Year, Estimated Fair Value	23,864	5,000
Available-for-Sale Within One Year, Number of Securities	9	1
Available-for-Sale More than One Year, Gross Unrealized Loss	497	1,822
Available-for-Sale More than One Year, Estimated Fair Value	30,480	73,142
Available-for-Sale More than One Year, Number of Securities	10	26
Available-for-Sale, Gross Unrealized Loss	624	1,822
Available-for-Sale, Estimated Fair Value	54,344	78,142
Available-for-Sale, Number of Securities	19	27
SBA loan pool securities [Member]
Summary of Investment Holdings [Line Items]
Available-for-Sale Within One Year, Gross Unrealized Loss	12	155
Available-for-Sale Within One Year, Estimated Fair Value	14,781	85,062
Available-for-Sale Within One Year, Number of Securities	3	15
Available-for-Sale More than One Year, Gross Unrealized Loss	267	433
Available-for-Sale More than One Year, Estimated Fair Value	11,837	11,975
Available-for-Sale More than One Year, Number of Securities	4	4
Available-for-Sale, Gross Unrealized Loss	279	588
Available-for-Sale, Estimated Fair Value	26,618	97,037
Available-for-Sale, Number of Securities	7	19
Corporate bonds [Member]
Summary of Investment Holdings [Line Items]
Available-for-Sale Within One Year, Gross Unrealized Loss		4
Available-for-Sale Within One Year, Estimated Fair Value		5,021
Available-for-Sale Within One Year, Number of Securities		1
Available-for-Sale More than One Year, Gross Unrealized Loss	48	68
Available-for-Sale More than One Year, Estimated Fair Value	7,947	7,925
Available-for-Sale More than One Year, Number of Securities	2	2
Available-for-Sale, Gross Unrealized Loss	48	72
Available-for-Sale, Estimated Fair Value	7,947	12,946
Available-for-Sale, Number of Securities	2	3
Other securities [Member]
Summary of Investment Holdings [Line Items]
Available-for-Sale More than One Year, Gross Unrealized Loss	76	80
Available-for-Sale More than One Year, Estimated Fair Value	949	1,945
Available-for-Sale More than One Year, Number of Securities	3	4
Available-for-Sale, Gross Unrealized Loss	76	80
Available-for-Sale, Estimated Fair Value	949	1,945
Available-for-Sale, Number of Securities	3	4
Equity securities [Member]
Summary of Investment Holdings [Line Items]
Available-for-Sale Within One Year, Gross Unrealized Loss	34	36
Available-for-Sale Within One Year, Estimated Fair Value	216	214
Available-for-Sale Within One Year, Number of Securities	1	1
Available-for-Sale, Gross Unrealized Loss	34	36
Available-for-Sale, Estimated Fair Value	$216	$214
Available-for-Sale, Number of Securities	1	1

Investment_Securities_Realized

Investment Securities - Realized Gains and Losses on Sales of Investment Securities (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Amortized Cost and Fair Value Debt Securities [Abstract]
Gross realized gains on sales of investment securities	$2,194	$1,421
Gross realized losses on sales of investment securities	-10
Net realized gains on sales of investment securities	2,184	1,421
Proceeds from sales of investment securities	$176,848	$85,234

Loans_Loans_Receivable_Detail

Loans - Loans Receivable (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	$2,816,557	$2,785,261
Allowance for loans losses	-52,951	-52,666
Deferred loan costs	3,474	3,237
Loans receivable, net	2,767,080	2,735,832	2,221,520
Real estate loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	2,539,939	2,508,515
Commercial and industrial loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	250,632	249,189
Consumer loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	25,986	27,557
Non-PCI Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	2,775,616	2,740,760
Allowance for loans losses	-51,515	-51,640	-56,593	-57,555
Deferred loan costs	3,474	3,237
Loans receivable, net	2,727,575	2,692,357
Non-PCI Loans [Member] | Real estate loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	2,499,323	2,464,386
Allowance for loans losses	-42,550	-41,194	-44,230	-43,550
Non-PCI Loans [Member] | Commercial and industrial loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	250,351	248,862
Allowance for loans losses	-7,786	-9,142	-10,425	-11,287
Non-PCI Loans [Member] | Consumer loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	25,942	27,512
Allowance for loans losses	-185	-220	-633	-1,427
PCI Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	40,941	44,501
Allowance for loans losses	-1,436	-1,026
Loans receivable, net	39,505	43,475
PCI Loans [Member] | Real estate loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	40,616	44,129
Allowance for loans losses		-895
PCI Loans [Member] | Commercial and industrial loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	281	327
Allowance for loans losses		-131
PCI Loans [Member] | Consumer loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	44	45
Loans receivable, net	44	45
Retail [Member] | Real estate loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	690,503	683,607
Retail [Member] | Non-PCI Loans [Member] | Real estate loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	679,938	675,072
Retail [Member] | PCI Loans [Member] | Real estate loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	10,565	8,535
Allowance for loans losses	-404	-401
Loans receivable, net	10,161	8,134
Hotel/motel [Member] | Real estate loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	493,680	462,181
Hotel/motel [Member] | Non-PCI Loans [Member] | Real estate loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	481,960	454,499
Hotel/motel [Member] | PCI Loans [Member] | Real estate loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	11,720	7,682
Allowance for loans losses	-146	-99
Loans receivable, net	11,574	7,583
Gas station [Member] | Real estate loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	353,239	369,985
Gas station [Member] | Non-PCI Loans [Member] | Real estate loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	346,798	362,240
Gas station [Member] | PCI Loans [Member] | Real estate loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	6,441	7,745
Allowance for loans losses	-555	-302
Loans receivable, net	5,886	7,443
Other [Member] | Real estate loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	830,881	847,922
Other [Member] | Non-PCI Loans [Member] | Real estate loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	820,707	842,126
Other [Member] | PCI Loans [Member] | Real estate loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	10,174	5,796
Allowance for loans losses	-167	-65
Loans receivable, net	10,007	5,731
Construction [Member] | Real estate loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	15,123	9,517
Construction [Member] | Non-PCI Loans [Member] | Real estate loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	15,123	9,517
Residential property [Member] | Real estate loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	156,513	135,303
Residential property [Member] | Non-PCI Loans [Member] | Real estate loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	154,797	120,932
Residential property [Member] | PCI Loans [Member] | Real estate loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	1,716	14,371
Allowance for loans losses	-46	-28
Loans receivable, net	1,670	14,343
Commercial term [Member] | Commercial and industrial loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	116,533	116,400
Commercial term [Member] | Non-PCI Loans [Member] | Commercial and industrial loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	116,252	116,073
Commercial term [Member] | PCI Loans [Member] | Commercial and industrial loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	281	327
Allowance for loans losses	-118	-131
Loans receivable, net	163	196
Commercial lines of credit [Member] | Commercial and industrial loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	97,761	93,860
Commercial lines of credit [Member] | Non-PCI Loans [Member] | Commercial and industrial loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	97,761	93,860
International loans [Member] | Commercial and industrial loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	36,338	38,929
International loans [Member] | Non-PCI Loans [Member] | Commercial and industrial loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	$36,338	$38,929

Loans_Loans_Receivable_Parenth

Loans - Loans Receivable (Parenthetical) (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	$2,816,557	$2,785,261
Real estate loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	2,539,939	2,508,515
Commercial property [Member] | Owner occupied real estate [Member] | Real estate loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	$1,140,000	$1,120,000

Loans_Additional_Information_D

Loans - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Sep. 30, 2014	Dec. 31, 2014
	Property			Property
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrued interest receivable	$9,238,000			$9,749,000
Loans receivable	2,767,080,000	2,221,520,000		2,735,832,000
Non-PCI loans receivable reclassified as Non-PCI loans held for sale	0	0
Sale of loans held for sale	19,854,000	5,958,000
Non-PCI loans held for sale reclassified to Non-PCI loans receivable	0	0
Allowance for off-balance sheet items	1,100,000	1,600,000
Number of real estate properties	19			25
Net carrying value of other real estate property	12,114,000			15,790,000
TDR loans receivable	26,000,000			26,300,000
Principal and interest due	3 months
Reserves relating to loans included in allowance for loan losses	2,200,000			2,900,000
Net carrying value	508,000	1,973,000
Number of loans restructured	4
Loans on non-accrual status	29,258,000			25,282,000
Serviced loans sold to unaffiliated parties	486,100,000	340,500,000
Insurance reimbursement settlement			611,000,000
Recoveries of previously charged-off and reimbursed Commercial SLA loans which needs to be reimbursed	95.00%
FDIC loss sharing liability	543,000			2,074,000
FDIC recoveries partially offset	935,000
Reimbursable expense owed to bank	392,000
PCI Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	39,505,000			43,475,000
Loans on non-accrual status	0			0
Minimum [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Due period for considering loans as impaired	90 days
Recoveries of previously charged-off and reimbursed Commercial SLA loans which needs to be reimbursed			80.00%
Maximum [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recoveries of previously charged-off and reimbursed Commercial SLA loans which needs to be reimbursed			95.00%
Central Bancorp, Inc [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Net carrying value of other real estate property	11,800,000			15,300,000
Securities Pledged as Collateral [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	802,000,000			840,000,000
Loans and Finance Receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrued interest receivable	$6,200,000			$6,400,000

Loans_Loans_Receivable_to_Loan

Loans - Loans Receivable to Loans Held for Sale (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Financing Receivable, Recorded Investment, Past Due [Line Items]
Balance at beginning of period	$5,451
Origination of loans held for sale	23,108	6,354
Sales of loans held for sale	-19,854	-5,958
Principal payoffs and amortization	-28	-6
Balance at end of period	8,677	390
Real estate loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Balance at beginning of period	3,323
Origination of loans held for sale	16,927	6,269
Sales of loans held for sale	-13,014	-5,874
Principal payoffs and amortization	-10	-5
Balance at end of period	7,226	390
Commercial and industrial loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Balance at beginning of period	2,128
Origination of loans held for sale	6,181	85
Sales of loans held for sale	-6,840	-84
Principal payoffs and amortization	-18	-1
Balance at end of period	$1,451

Loans_Allowance_for_Loan_Losse

Loans - Allowance for Loan Losses and Allowance for Off-Balance Sheet Items (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period			$52,666
Balance at end of period	52,951		52,666
Non-PCI Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	51,640	57,555
Charge-offs	-34	-1,604
Recoveries on loans previously charged off	1,692	4,251
(Negative provision) provision charged to operating expense	1,783	3,609
Balance at end of period	51,515	56,593
PCI Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	1,026
Charge-offs	-52
Recoveries on loans previously charged off	352
(Negative provision) provision charged to operating expense	-110
Balance at end of period	1,436
Allowance for loan losses [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	52,666	57,555
Charge-offs	-86	-1,604
Recoveries on loans previously charged off	2,044	4,251
Net loan recoveries (charge-offs)	1,958	2,647
(Negative provision) provision charged to operating expense	-1,673	-3,609
Balance at end of period	52,951	56,593
Allowance for loan losses [Member] | Non-PCI Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	51,640
Charge-offs	-34
Recoveries on loans previously charged off	1,692
Net loan recoveries (charge-offs)	1,658
(Negative provision) provision charged to operating expense	-1,783
Balance at end of period	51,515
Allowance for loan losses [Member] | PCI Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	1,026
Charge-offs	-52
Recoveries on loans previously charged off	352
Net loan recoveries (charge-offs)	300
(Negative provision) provision charged to operating expense	110
Balance at end of period	1,436
Allowance for off-balance sheet items [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	1,366	1,248
(Negative provision) provision charged to operating expense	-312	309
Balance at end of period	1,054	1,557
Allowance for off-balance sheet items [Member] | Non-PCI Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	1,366
(Negative provision) provision charged to operating expense	-312
Balance at end of period	$1,054

Loans_Allowance_for_Loan_Losse1

Loans - Allowance for Loan Losses by Portfolio Segment (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Allowance for loan losses:
Balance at beginning of period			$52,666
Balance at end of period	52,951		52,666
Loans receivable:
Balance at end of period	2,816,557		2,785,261
Non-PCI Loans [Member]
Allowance for loan losses:
Balance at beginning of period	51,640	57,555
Charge-offs	-34	-1,604
Recoveries on loans previously charged off	1,692	4,251
(Negative provision) provision	-1,783	-3,609
Balance at end of period	51,515	56,593
Loans receivable:
Balance at end of period	2,775,616		2,740,760
PCI Loans [Member]
Allowance for loan losses:
Balance at beginning of period	1,026
Charge-offs	-52
Recoveries on loans previously charged off	352
(Negative provision) provision	110
Balance at end of period	1,436
Loans receivable:
Balance at end of period	40,941		44,501
Allowance for Loans and Leases Receivable [Member] | Non-PCI Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Ending balance: individually evaluated for impairment	5,299	5,119
Ending balance: collectively evaluated for impairment	46,216	51,474
Allowance for Loans and Leases Receivable [Member] | PCI Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Ending balance: acquired with deteriorated credit quality	1,436
Loans receivable:
Ending balance: acquired with deteriorated credit quality	1,436
Loans [Member] | Non-PCI Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Ending balance: individually evaluated for impairment	46,930	50,350
Ending balance: collectively evaluated for impairment	2,728,686	2,226,022
Loans receivable:
Balance at end of period	2,775,616	2,276,372
Loans [Member] | PCI Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Ending balance: acquired with deteriorated credit quality	40,959
Loans receivable:
Ending balance: acquired with deteriorated credit quality	40,959
Real estate loans [Member]
Loans receivable:
Balance at end of period	2,539,939		2,508,515
Real estate loans [Member] | Non-PCI Loans [Member]
Allowance for loan losses:
Balance at beginning of period	41,194	43,550
Charge-offs		-1,128
Recoveries on loans previously charged off	32	2,918
(Negative provision) provision	1,324	-1,110
Balance at end of period	42,550	44,230
Loans receivable:
Balance at end of period	2,499,323		2,464,386
Real estate loans [Member] | PCI Loans [Member]
Allowance for loan losses:
Balance at beginning of period	895
Charge-offs	-52
(Negative provision) provision	475
Loans receivable:
Balance at end of period	40,616		44,129
Real estate loans [Member] | Allowance for Loans and Leases Receivable [Member] | Non-PCI Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Ending balance: individually evaluated for impairment	3,386	1,029
Ending balance: collectively evaluated for impairment	39,164	43,201
Real estate loans [Member] | Allowance for Loans and Leases Receivable [Member] | PCI Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Ending balance: acquired with deteriorated credit quality	1,318
Loans receivable:
Ending balance: acquired with deteriorated credit quality	1,318
Real estate loans [Member] | Loans [Member] | Non-PCI Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Ending balance: individually evaluated for impairment	33,537	34,294
Ending balance: collectively evaluated for impairment	2,465,786	1,993,620
Loans receivable:
Balance at end of period	2,499,323	2,027,914
Real estate loans [Member] | Loans [Member] | PCI Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Ending balance: acquired with deteriorated credit quality	40,633
Loans receivable:
Ending balance: acquired with deteriorated credit quality	40,633
Commercial and industrial loans [Member]
Loans receivable:
Balance at end of period	250,632		249,189
Commercial and industrial loans [Member] | Non-PCI Loans [Member]
Allowance for loan losses:
Balance at beginning of period	9,142	11,287
Charge-offs	-34	-422
Recoveries on loans previously charged off	1,660	1,321
(Negative provision) provision	-2,982	-1,761
Balance at end of period	7,786	10,425
Loans receivable:
Balance at end of period	250,351		248,862
Commercial and industrial loans [Member] | PCI Loans [Member]
Allowance for loan losses:
Balance at beginning of period	131
Recoveries on loans previously charged off	352
(Negative provision) provision	-365
Loans receivable:
Balance at end of period	281		327
Commercial and industrial loans [Member] | Allowance for Loans and Leases Receivable [Member] | Non-PCI Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Ending balance: individually evaluated for impairment	1,913	3,973
Ending balance: collectively evaluated for impairment	5,873	6,452
Commercial and industrial loans [Member] | Allowance for Loans and Leases Receivable [Member] | PCI Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Ending balance: acquired with deteriorated credit quality	118
Loans receivable:
Ending balance: acquired with deteriorated credit quality	118
Commercial and industrial loans [Member] | Loans [Member] | Non-PCI Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Ending balance: individually evaluated for impairment	11,570	14,503
Ending balance: collectively evaluated for impairment	238,781	204,599
Loans receivable:
Balance at end of period	250,351	219,102
Commercial and industrial loans [Member] | Loans [Member] | PCI Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Ending balance: acquired with deteriorated credit quality	282
Loans receivable:
Ending balance: acquired with deteriorated credit quality	282
Consumer loans [Member]
Loans receivable:
Balance at end of period	25,986		27,557
Consumer loans [Member] | Non-PCI Loans [Member]
Allowance for loan losses:
Balance at beginning of period	220	1,427
Charge-offs		-54
Recoveries on loans previously charged off		12
(Negative provision) provision	-35	-752
Balance at end of period	185	633
Loans receivable:
Balance at end of period	25,942		27,512
Consumer loans [Member] | PCI Loans [Member]
Loans receivable:
Balance at end of period	44		45
Consumer loans [Member] | Allowance for Loans and Leases Receivable [Member] | Non-PCI Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Ending balance: individually evaluated for impairment		117
Ending balance: collectively evaluated for impairment	185	516
Consumer loans [Member] | Loans [Member] | Non-PCI Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Ending balance: individually evaluated for impairment	1,823	1,553
Ending balance: collectively evaluated for impairment	24,119	27,803
Loans receivable:
Balance at end of period	25,942	29,356
Consumer loans [Member] | Loans [Member] | PCI Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Ending balance: acquired with deteriorated credit quality	44
Loans receivable:
Ending balance: acquired with deteriorated credit quality	44
Unallocated [Member] | Non-PCI Loans [Member]
Allowance for loan losses:
Balance at beginning of period	1,084	1,291
(Negative provision) provision	-90	14
Balance at end of period	994	1,305
Unallocated [Member] | Allowance for Loans and Leases Receivable [Member] | Non-PCI Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Ending balance: collectively evaluated for impairment	$994	$1,305

Loans_Credit_Quality_of_Loan_P

Loans - Credit Quality of Loan Portfolio (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	$2,816,557	$2,785,261
Real estate loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	2,539,939	2,508,515
Real estate loans [Member] | Retail [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	690,503	683,607
Real estate loans [Member] | Hotel/motel [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	493,680	462,181
Real estate loans [Member] | Gas station [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	353,239	369,985
Real estate loans [Member] | Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	830,881	847,922
Real estate loans [Member] | Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	15,123	9,517
Real estate loans [Member] | Residential property [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	156,513	135,303
Commercial and industrial loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	250,632	249,189
Commercial and industrial loans [Member] | Commercial term [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	116,533	116,400
Commercial and industrial loans [Member] | Commercial lines of credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	97,761	93,860
Commercial and industrial loans [Member] | International loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	36,338	38,929
Consumer loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	25,986	27,557
Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	2,775,616	2,740,760
Non-PCI Loans [Member] | Pass/Pass-Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	2,644,084	2,607,886
Non-PCI Loans [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	75,389	85,487
Non-PCI Loans [Member] | Classified [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	56,143	47,387
Non-PCI Loans [Member] | Real estate loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	2,499,323	2,464,386
Non-PCI Loans [Member] | Real estate loans [Member] | Retail [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	679,938	675,072
Non-PCI Loans [Member] | Real estate loans [Member] | Hotel/motel [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	481,960	454,499
Non-PCI Loans [Member] | Real estate loans [Member] | Gas station [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	346,798	362,240
Non-PCI Loans [Member] | Real estate loans [Member] | Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	820,707	842,126
Non-PCI Loans [Member] | Real estate loans [Member] | Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	15,123	9,517
Non-PCI Loans [Member] | Real estate loans [Member] | Residential property [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	154,797	120,932
Non-PCI Loans [Member] | Real estate loans [Member] | Pass/Pass-Watch [Member] | Retail [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	658,292	654,360
Non-PCI Loans [Member] | Real estate loans [Member] | Pass/Pass-Watch [Member] | Hotel/motel [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	425,710	397,437
Non-PCI Loans [Member] | Real estate loans [Member] | Pass/Pass-Watch [Member] | Gas station [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	330,319	345,775
Non-PCI Loans [Member] | Real estate loans [Member] | Pass/Pass-Watch [Member] | Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	800,758	822,037
Non-PCI Loans [Member] | Real estate loans [Member] | Pass/Pass-Watch [Member] | Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	15,123	9,517
Non-PCI Loans [Member] | Real estate loans [Member] | Pass/Pass-Watch [Member] | Residential property [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	152,673	118,688
Non-PCI Loans [Member] | Real estate loans [Member] | Special Mention [Member] | Retail [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	12,141	18,013
Non-PCI Loans [Member] | Real estate loans [Member] | Special Mention [Member] | Hotel/motel [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	42,938	46,365
Non-PCI Loans [Member] | Real estate loans [Member] | Special Mention [Member] | Gas station [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	9,861	8,899
Non-PCI Loans [Member] | Real estate loans [Member] | Special Mention [Member] | Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	9,087	9,543
Non-PCI Loans [Member] | Real estate loans [Member] | Special Mention [Member] | Residential property [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans		66
Non-PCI Loans [Member] | Real estate loans [Member] | Classified [Member] | Retail [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	9,505	2,699
Non-PCI Loans [Member] | Real estate loans [Member] | Classified [Member] | Hotel/motel [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	13,312	10,697
Non-PCI Loans [Member] | Real estate loans [Member] | Classified [Member] | Gas station [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	6,618	7,566
Non-PCI Loans [Member] | Real estate loans [Member] | Classified [Member] | Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	10,862	10,546
Non-PCI Loans [Member] | Real estate loans [Member] | Classified [Member] | Residential property [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	2,124	2,178
Non-PCI Loans [Member] | Commercial and industrial loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	250,351	248,862
Non-PCI Loans [Member] | Commercial and industrial loans [Member] | Commercial term [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	116,252	116,073
Non-PCI Loans [Member] | Commercial and industrial loans [Member] | Commercial lines of credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	97,761	93,860
Non-PCI Loans [Member] | Commercial and industrial loans [Member] | International loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	36,338	38,929
Non-PCI Loans [Member] | Commercial and industrial loans [Member] | Pass/Pass-Watch [Member] | Commercial term [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	106,066	106,326
Non-PCI Loans [Member] | Commercial and industrial loans [Member] | Pass/Pass-Watch [Member] | Commercial lines of credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	95,482	92,312
Non-PCI Loans [Member] | Commercial and industrial loans [Member] | Pass/Pass-Watch [Member] | International loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	35,987	36,121
Non-PCI Loans [Member] | Commercial and industrial loans [Member] | Special Mention [Member] | Commercial term [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	1,089	1,225
Non-PCI Loans [Member] | Commercial and industrial loans [Member] | Special Mention [Member] | Commercial lines of credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans		993
Non-PCI Loans [Member] | Commercial and industrial loans [Member] | Special Mention [Member] | International loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	152	252
Non-PCI Loans [Member] | Commercial and industrial loans [Member] | Classified [Member] | Commercial term [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	9,097	8,522
Non-PCI Loans [Member] | Commercial and industrial loans [Member] | Classified [Member] | Commercial lines of credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	2,279	555
Non-PCI Loans [Member] | Commercial and industrial loans [Member] | Classified [Member] | International loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	199	2,556
Non-PCI Loans [Member] | Consumer loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	25,942	27,512
Non-PCI Loans [Member] | Consumer loans [Member] | Pass/Pass-Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	23,674	25,313
Non-PCI Loans [Member] | Consumer loans [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	121	131
Non-PCI Loans [Member] | Consumer loans [Member] | Classified [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Non-PCI loans	$2,147	$2,068

Loans_Analysis_of_Gross_Loans_

Loans - Analysis of Gross Loans, Disaggregated by Loan Class (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	$2,816,557	$2,785,261
Accruing 90 Days or More Past Due	0	0
Real estate loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	2,539,939	2,508,515
Real estate loans [Member] | Retail [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	690,503	683,607
Real estate loans [Member] | Hotel/motel [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	493,680	462,181
Real estate loans [Member] | Gas station [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	353,239	369,985
Real estate loans [Member] | Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	830,881	847,922
Real estate loans [Member] | Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	15,123	9,517
Real estate loans [Member] | Residential property [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	156,513	135,303
Commercial and industrial loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	250,632	249,189
Commercial and industrial loans [Member] | Commercial term [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	116,533	116,400
Commercial and industrial loans [Member] | Commercial lines of credit [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	97,761	93,860
Commercial and industrial loans [Member] | International loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	36,338	38,929
Consumer loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	25,986	27,557
Non-PCI Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	8,460	9,713
60-89 Days Past Due	7,115	6,729
90 Days or More Past Due	18,779	7,857
Total Past Due	34,354	24,299
Current	2,741,262	2,716,461
Total Loans	2,775,616	2,740,760
Accruing 90 Days or More Past Due	0	0
Non-PCI Loans [Member] | Real estate loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	2,499,323	2,464,386
Non-PCI Loans [Member] | Real estate loans [Member] | Retail [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	1,943	1,554
60-89 Days Past Due	6,031	281
90 Days or More Past Due	2,950	1,920
Total Past Due	10,924	3,755
Current	669,014	671,317
Total Loans	679,938	675,072
Accruing 90 Days or More Past Due	0	0
Non-PCI Loans [Member] | Real estate loans [Member] | Hotel/motel [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	2,659	1,531
60-89 Days Past Due		2,340
90 Days or More Past Due	3,421	433
Total Past Due	6,080	4,304
Current	475,880	450,195
Total Loans	481,960	454,499
Accruing 90 Days or More Past Due	0	0
Non-PCI Loans [Member] | Real estate loans [Member] | Gas station [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	580	2,991
60-89 Days Past Due	480	1,113
90 Days or More Past Due	4,088	353
Total Past Due	5,148	4,457
Current	341,650	357,783
Total Loans	346,798	362,240
Accruing 90 Days or More Past Due	0	0
Non-PCI Loans [Member] | Real estate loans [Member] | Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	1,770	1,674
60-89 Days Past Due	278	2,156
90 Days or More Past Due	3,544	1,142
Total Past Due	5,592	4,972
Current	815,115	837,154
Total Loans	820,707	842,126
Accruing 90 Days or More Past Due	0	0
Non-PCI Loans [Member] | Real estate loans [Member] | Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	15,123	9,517
Total Loans	15,123	9,517
Accruing 90 Days or More Past Due	0	0
Non-PCI Loans [Member] | Real estate loans [Member] | Residential property [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due		167
90 Days or More Past Due	547	687
Total Past Due	547	854
Current	154,250	120,078
Total Loans	154,797	120,932
Accruing 90 Days or More Past Due	0	0
Non-PCI Loans [Member] | Commercial and industrial loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	250,351	248,862
Non-PCI Loans [Member] | Commercial and industrial loans [Member] | Commercial term [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	-30	1,107
60-89 Days Past Due	87	490
90 Days or More Past Due	3,062	2,847
Total Past Due	3,119	4,444
Current	113,133	111,629
Total Loans	116,252	116,073
Accruing 90 Days or More Past Due	0	0
Non-PCI Loans [Member] | Commercial and industrial loans [Member] | Commercial lines of credit [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	1,407
90 Days or More Past Due	819	227
Total Past Due	2,226	227
Current	95,535	93,633
Total Loans	97,761	93,860
Accruing 90 Days or More Past Due	0	0
Non-PCI Loans [Member] | Commercial and industrial loans [Member] | International loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	131	200
Total Past Due	131	200
Current	36,207	38,729
Total Loans	36,338	38,929
Accruing 90 Days or More Past Due	0	0
Non-PCI Loans [Member] | Consumer loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due		489
60-89 Days Past Due	239	349
90 Days or More Past Due	348	248
Total Past Due	587	1,086
Current	25,355	26,426
Total Loans	25,942	27,512
Accruing 90 Days or More Past Due	$0	$0

Loans_Information_on_Impaired_

Loans - Information on Impaired Loans, Disaggregated by Loan Class (Detail) (USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Financing Receivable, Impaired [Line Items]
Recorded Investment	$46,930	$45,865
Unpaid Principal Balance	51,051	49,586
With No Related Allowance Recorded	35,148	34,897
With an Allowance Recorded	11,781	10,968
Related Allowance	5,299	5,246
Average Recorded Investment	47,318	48,790
Interest Income Recognized	710	3,160
Real estate loans [Member] | Retail [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	5,963	4,436
Unpaid Principal Balance	6,133	4,546
With No Related Allowance Recorded	3,496	1,938
With an Allowance Recorded	2,467	2,498
Related Allowance	189	220
Average Recorded Investment	5,990	5,373
Interest Income Recognized	72	251
Real estate loans [Member] | Hotel/motel [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	6,228	5,835
Unpaid Principal Balance	6,910	6,426
With No Related Allowance Recorded	4,974	4,581
With an Allowance Recorded	1,254	1,254
Related Allowance	2,767	1,828
Average Recorded Investment	6,272	4,583
Interest Income Recognized	182	398
Real estate loans [Member] | Gas station [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	7,968	8,974
Unpaid Principal Balance	8,608	9,594
With No Related Allowance Recorded	7,527	8,526
With an Allowance Recorded	441	448
Related Allowance	137	150
Average Recorded Investment	7,993	11,281
Interest Income Recognized	93	787
Real estate loans [Member] | Other [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	10,291	10,125
Unpaid Principal Balance	11,896	11,591
With No Related Allowance Recorded	9,120	8,890
With an Allowance Recorded	1,171	1,235
Related Allowance	293	319
Average Recorded Investment	10,254	10,579
Interest Income Recognized	208	885
Real estate loans [Member] | Residential property [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	3,087	3,127
Unpaid Principal Balance	3,242	3,268
With No Related Allowance Recorded	3,087	3,127
Average Recorded Investment	3,102	2,924
Interest Income Recognized	32	115
Commercial and industrial loans [Member] | Commercial term [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	8,147	7,614
Unpaid Principal Balance	8,716	8,133
With No Related Allowance Recorded	3,912	2,999
With an Allowance Recorded	4,235	4,615
Related Allowance	1,881	2,443
Average Recorded Investment	8,078	9,458
Interest Income Recognized	99	566
Commercial and industrial loans [Member] | Commercial lines of credit [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	2,092	466
Unpaid Principal Balance	2,210	575
With No Related Allowance Recorded	442	466
With an Allowance Recorded	1,650
Related Allowance	8
Average Recorded Investment	2,439	1,205
Interest Income Recognized	7	66
Commercial and industrial loans [Member] | International loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	1,331	3,546
Unpaid Principal Balance	1,331	3,546
With No Related Allowance Recorded	767	2,628
With an Allowance Recorded	563	918
Related Allowance	24	286
Average Recorded Investment	1,360	1,736
Interest Income Recognized		33
Consumer loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	1,823	1,742
Unpaid Principal Balance	2,005	1,907
With No Related Allowance Recorded	1,823	1,742
Average Recorded Investment	1,830	1,651
Interest Income Recognized	$17	$59

Loans_Summary_of_Interest_Fore

Loans - Summary of Interest Foregone on Impaired Loans (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Receivables [Abstract]
Interest income that would have been recognized had impaired loans performed in accordance with their original terms	$740	$1,213
Less: Interest income recognized on impaired loans	-710	-764
Interest foregone on impaired loans	$30	$449

Loans_NonAccrual_Loans_Disaggr

Loans - Non-Accrual Loans, Disaggregated by Loan Class (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual Non-PCI loans	$29,258,000	$25,282,000
Real estate loans [Member] | Retail [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual Non-PCI loans	3,988,000	2,160,000
Real estate loans [Member] | Hotel/motel [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual Non-PCI loans	4,431,000	3,835,000
Real estate loans [Member] | Gas station [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual Non-PCI loans	5,023,000	3,478,000
Real estate loans [Member] | Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual Non-PCI loans	5,548,000	4,961,000
Real estate loans [Member] | Residential property [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual Non-PCI loans	1,537,000	1,588,000
Commercial and industrial loans [Member] | Commercial term [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual Non-PCI loans	5,867,000	7,052,000
Commercial and industrial loans [Member] | Commercial lines of credit [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual Non-PCI loans	1,041,000	466,000
Consumer loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual Non-PCI loans	$1,823,000	$1,742,000

Loans_NonPerforming_Assets_Det

Loans - Non-Performing Assets (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Receivables [Abstract]
Nonaccrual Non-PCI loans	$29,258	$25,282
Loans 90 days or more past due and still accruing	0	0
Total nonperforming Non-PCI loans	29,258	25,282
Other real estate owned	12,114	15,790
Total nonperforming assets	$41,372	$41,072

Loans_Troubled_Debt_Restructur

Loans - Troubled Debt Restructurings, Disaggregated by Type of Concession and by Loan Type (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Financing Receivable, Modifications [Line Items]
Non-Accrual TDRs, Deferral of Principal	$5,999	$4,116
Non-Accrual TDRs, Deferral of Principal and Interest	1,699	1,444
Non-Accrual TDRs, Reduction of Principal and Interest	3,165	3,246
Non-Accrual TDRs, Extension of Maturity	3,753	3,650
Non-Accrual TDRs, Total	14,616	12,456
Accrual TDRs, Deferral of Principal	6,479	9,004
Accrual TDRs, Deferral of Principal and Interest	223	226
Accrual TDRs, Reduction of Principal and Interest	1,451	1,549
Accrual TDRs, Extension of Maturity	3,212	3,038
Accrual TDRs	11,365	13,817
Consumer loans [Member]
Financing Receivable, Modifications [Line Items]
Non-Accrual TDRs, Reduction of Principal and Interest	127	131
Non-Accrual TDRs, Total	127	131
Real estate loans [Member] | Retail [Member]
Financing Receivable, Modifications [Line Items]
Non-Accrual TDRs, Extension of Maturity	2,003	2,032
Non-Accrual TDRs, Total	2,003	2,032
Accrual TDRs, Deferral of Principal	304	306
Accrual TDRs	304	306
Real estate loans [Member] | Hotel/motel [Member]
Financing Receivable, Modifications [Line Items]
Non-Accrual TDRs, Deferral of Principal	1,073	1,115
Non-Accrual TDRs, Deferral of Principal and Interest	-64	-53
Non-Accrual TDRs, Total	1,009	1,062
Accrual TDRs, Deferral of Principal	1,802	1,807
Accrual TDRs	1,802	1,807
Real estate loans [Member] | Gas station [Member]
Financing Receivable, Modifications [Line Items]
Non-Accrual TDRs, Deferral of Principal	3,033	1,075
Non-Accrual TDRs, Total	3,033	1,075
Accrual TDRs, Deferral of Principal	352	2,335
Accrual TDRs	352	2,335
Real estate loans [Member] | Other [Member]
Financing Receivable, Modifications [Line Items]
Non-Accrual TDRs, Deferral of Principal	932	943
Non-Accrual TDRs, Deferral of Principal and Interest	1,766	1,498
Non-Accrual TDRs, Reduction of Principal and Interest	407	433
Non-Accrual TDRs, Extension of Maturity	20	24
Non-Accrual TDRs, Total	3,125	2,898
Accrual TDRs, Deferral of Principal	2,318	2,343
Accrual TDRs, Reduction of Principal and Interest	771	782
Accrual TDRs, Extension of Maturity	1,373	1,372
Accrual TDRs	4,462	4,497
Real estate loans [Member] | Residential property [Member]
Financing Receivable, Modifications [Line Items]
Non-Accrual TDRs, Deferral of Principal	729	742
Non-Accrual TDRs, Total	729	742
Accrual TDRs, Extension of Maturity	306	308
Accrual TDRs	306	308
Commercial and industrial loans [Member] | Commercial term [Member]
Financing Receivable, Modifications [Line Items]
Non-Accrual TDRs, Deferral of Principal	12	14
Non-Accrual TDRs, Deferral of Principal and Interest	-3	-1
Non-Accrual TDRs, Reduction of Principal and Interest	2,507	2,556
Non-Accrual TDRs, Extension of Maturity	1,632	1,481
Non-Accrual TDRs, Total	4,148	4,050
Accrual TDRs, Deferral of Principal	53	57
Accrual TDRs, Deferral of Principal and Interest	223	226
Accrual TDRs, Reduction of Principal and Interest	481	567
Accrual TDRs, Extension of Maturity	1,533	1,358
Accrual TDRs	2,290	2,208
Commercial and industrial loans [Member] | Commercial lines of credit [Member]
Financing Receivable, Modifications [Line Items]
Non-Accrual TDRs, Deferral of Principal	220	227
Non-Accrual TDRs, Reduction of Principal and Interest	124	126
Non-Accrual TDRs, Extension of Maturity	98	113
Non-Accrual TDRs, Total	442	466
Accrual TDRs, Deferral of Principal	1,650	2,156
Accrual TDRs	1,650	2,156
Commercial and industrial loans [Member] | International loans [Member]
Financing Receivable, Modifications [Line Items]
Accrual TDRs, Reduction of Principal and Interest	199	200
Accrual TDRs	$199	$200

Loans_Troubled_Debt_Restructur1

Loans - Troubled Debt Restructurings, Disaggregated by Loan Class (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
	SecurityLoan	SecurityLoan
Financing Receivable, Modifications [Line Items]
Number of Loans	4	7
Pre-Modification Outstanding Recorded Investment	$543	$2,022
Post-Modification Outstanding Recorded Investment	508	1,973
Real estate loans [Member] | Other [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans		1
Pre-Modification Outstanding Recorded Investment		943
Post-Modification Outstanding Recorded Investment		943
Commercial and industrial loans [Member] | Commercial term [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans	4	5
Pre-Modification Outstanding Recorded Investment	543	829
Post-Modification Outstanding Recorded Investment	508	788
Commercial and industrial loans [Member] | Commercial lines of credit [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans		1
Pre-Modification Outstanding Recorded Investment		250
Post-Modification Outstanding Recorded Investment		$242

Loans_Troubled_Debt_Restructur2

Loans - Troubled Debt Restructurings, Disaggregated by Loan Class (Parenthetical) (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Real estate loans [Member] | Other [Member]
Financing Receivable, Modifications [Line Items]
Loan modification made through deferrals principal payment		$943,000
Commercial and industrial loans [Member] | Commercial term [Member]
Financing Receivable, Modifications [Line Items]
Loan modification made through deferrals principal payment		491,000
Amount of loan modification through extension of maturity	508,000	190,000
Loan modifications made through reduction of principal or accrued interest payments		107,000
Commercial and industrial loans [Member] | Commercial lines of credit [Member]
Financing Receivable, Modifications [Line Items]
Loan modification made through deferrals principal payment		$242,000

Loans_Troubled_Debt_Restructur3

Loans - Troubled Debt Restructurings that Defaulted Subsequent to Modifications Occurring Within Previous Twelve Months, Disaggregated by Loan Class (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
	SecurityLoan	SecurityLoan
Financing Receivable, Modifications [Line Items]
Number of Loans	4	7
Recorded Investment	$4,325	$2,080
Consumer loans [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans		1
Recorded Investment		149
Real estate loans [Member] | Retail [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans	1	1
Recorded Investment	1,832	310
Real estate loans [Member] | Hotel/motel [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans		1
Recorded Investment		1,000
Real estate loans [Member] | Gas station [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans	1	1
Recorded Investment	1,990	87
Real estate loans [Member] | Other [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans	1	2
Recorded Investment	379	481
Commercial and industrial loans [Member] | Commercial term [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans		1
Recorded Investment		53
Commercial and industrial loans [Member] | Commercial lines of credit [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans	1
Recorded Investment	$124

Loans_Schedule_of_Changes_in_C

Loans - Schedule of Changes in Carrying Value of PCI Loans (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Carrying Amount
Balance at beginning of period		$2,785,261
Provision for credit losses	-52,951	-52,666
Balance at end of period	2,816,557	2,785,261
PCI Loans [Member]
Carrying Amount
Balance at beginning of period	44,501
Accretion	843
Payments received	-5,425
Disposal/transfer to OREO	722
Changes in expected cash flows, net	0
Provision for credit losses	-1,436	-1,026
Balance at end of period	40,941
Accretable Yield
Balance at beginning of period	-11,025
Accretion	843
Payments received	0
Disposal/transfer to OREO	0
Changes in expected cash flows, net	376
Provision for credit losses	0
Balance at end of period	($9,806)

Loans_Credit_Quality_of_PCI_Lo

Loans - Credit Quality of PCI Loan (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment [Line Items]
Total	$2,816,557	$2,785,261
Allowance Amount	52,951	52,666
Total PCI loans	2,767,080	2,735,832	2,221,520
Real estate loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	2,539,939	2,508,515
Real estate loans [Member] | Retail [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	690,503	683,607
Real estate loans [Member] | Hotel/motel [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	493,680	462,181
Real estate loans [Member] | Gas station [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	353,239	369,985
Real estate loans [Member] | Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	830,881	847,922
Real estate loans [Member] | Residential property [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	156,513	135,303
Commercial and industrial loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	250,632	249,189
Commercial and industrial loans [Member] | Commercial term [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	116,533	116,400
Consumer loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	25,986	27,557
PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	40,941	44,501
Allowance Amount	1,436	1,026
Total PCI loans	39,505	43,475
PCI Loans [Member] | Pass/Pass-Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	1,453	1,207
PCI Loans [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	346	1,461
PCI Loans [Member] | Classified [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	39,142	41,833
PCI Loans [Member] | Real estate loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	40,616	44,129
Allowance Amount		895
PCI Loans [Member] | Real estate loans [Member] | Retail [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	10,565	8,535
Allowance Amount	404	401
Total PCI loans	10,161	8,134
PCI Loans [Member] | Real estate loans [Member] | Hotel/motel [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	11,720	7,682
Allowance Amount	146	99
Total PCI loans	11,574	7,583
PCI Loans [Member] | Real estate loans [Member] | Gas station [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	6,441	7,745
Allowance Amount	555	302
Total PCI loans	5,886	7,443
PCI Loans [Member] | Real estate loans [Member] | Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	10,174	5,796
Allowance Amount	167	65
Total PCI loans	10,007	5,731
PCI Loans [Member] | Real estate loans [Member] | Residential property [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	1,716	14,371
Allowance Amount	46	28
Total PCI loans	1,670	14,343
PCI Loans [Member] | Real estate loans [Member] | Pass/Pass-Watch [Member] | Retail [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	1,201	1,207
PCI Loans [Member] | Real estate loans [Member] | Pass/Pass-Watch [Member] | Hotel/motel [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	252
PCI Loans [Member] | Real estate loans [Member] | Special Mention [Member] | Retail [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	168	219
PCI Loans [Member] | Real estate loans [Member] | Special Mention [Member] | Gas station [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	178	1,242
PCI Loans [Member] | Real estate loans [Member] | Classified [Member] | Retail [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	9,196	7,109
PCI Loans [Member] | Real estate loans [Member] | Classified [Member] | Hotel/motel [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	11,468	7,682
PCI Loans [Member] | Real estate loans [Member] | Classified [Member] | Gas station [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	6,263	6,503
PCI Loans [Member] | Real estate loans [Member] | Classified [Member] | Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	10,174	5,796
PCI Loans [Member] | Real estate loans [Member] | Classified [Member] | Residential property [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	1,716	14,371
PCI Loans [Member] | Commercial and industrial loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	281	327
Allowance Amount		131
PCI Loans [Member] | Commercial and industrial loans [Member] | Commercial term [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	281	327
Allowance Amount	118	131
Total PCI loans	163	196
PCI Loans [Member] | Commercial and industrial loans [Member] | Classified [Member] | Commercial term [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	281	327
PCI Loans [Member] | Consumer loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	44	45
Total PCI loans	44	45
PCI Loans [Member] | Consumer loans [Member] | Classified [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	$44	$45

Loans_Analysis_of_Gross_Loans_1

Loans - Analysis of Gross Loans, Disaggregated by PCI Loan Class (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	$2,816,557	$2,785,261
Allowance Amount	52,951	52,666
Loans receivable, net	2,767,080	2,735,832	2,221,520
Real estate loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	2,539,939	2,508,515
Real estate loans [Member] | Retail [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	690,503	683,607
Real estate loans [Member] | Hotel/motel [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	493,680	462,181
Real estate loans [Member] | Gas station [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	353,239	369,985
Real estate loans [Member] | Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	830,881	847,922
Real estate loans [Member] | Residential property [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	156,513	135,303
Commercial and industrial loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	250,632	249,189
Commercial and industrial loans [Member] | Commercial term [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	116,533	116,400
Consumer loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	25,986	27,557
PCI Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	906	1,574
60-89 Days Past Due	22	1,357
90 Days or More Past Due	28,006	28,475
Total Past Due	28,934	31,406
Current	12,007	13,095
Total Loans	40,941	44,501
Allowance Amount	1,436	1,026
Loans receivable, net	39,505	43,475
PCI Loans [Member] | Real estate loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	40,616	44,129
Allowance Amount		895
PCI Loans [Member] | Real estate loans [Member] | Retail [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	13	93
60-89 Days Past Due		287
90 Days or More Past Due	6,424	3,815
Total Past Due	6,437	4,195
Current	4,128	4,340
Total Loans	10,565	8,535
Allowance Amount	404	401
Loans receivable, net	10,161	8,134
PCI Loans [Member] | Real estate loans [Member] | Hotel/motel [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due		312
90 Days or More Past Due	6,801	2,490
Total Past Due	6,801	2,802
Current	4,919	4,880
Total Loans	11,720	7,682
Allowance Amount	146	99
Loans receivable, net	11,574	7,583
PCI Loans [Member] | Real estate loans [Member] | Gas station [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	831	1,139
60-89 Days Past Due		1,053
90 Days or More Past Due	3,868	3,178
Total Past Due	4,699	5,370
Current	1,742	2,375
Total Loans	6,441	7,745
Allowance Amount	555	302
Loans receivable, net	5,886	7,443
PCI Loans [Member] | Real estate loans [Member] | Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	62
90 Days or More Past Due	9,719	5,235
Total Past Due	9,781	5,235
Current	393	561
Total Loans	10,174	5,796
Allowance Amount	167	65
Loans receivable, net	10,007	5,731
PCI Loans [Member] | Real estate loans [Member] | Residential property [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 Days or More Past Due	1,056	13,594
Total Past Due	1,056	13,594
Current	660	777
Total Loans	1,716	14,371
Allowance Amount	46	28
Loans receivable, net	1,670	14,343
PCI Loans [Member] | Commercial and industrial loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	281	327
Allowance Amount		131
PCI Loans [Member] | Commercial and industrial loans [Member] | Commercial term [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due		30
60-89 Days Past Due	6
90 Days or More Past Due	110	135
Total Past Due	116	165
Current	165	162
Total Loans	281	327
Allowance Amount	118	131
Loans receivable, net	163	196
PCI Loans [Member] | Consumer loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
60-89 Days Past Due	16	17
90 Days or More Past Due	28	28
Total Past Due	44	45
Total Loans	44	45
Loans receivable, net	$44	$45

Loans_Changes_in_Servicing_Ass

Loans - Changes in Servicing Assets and Liabilities (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Servicing assets:
Balance at beginning of period	$13,773	$6,833
Addition related to sale of SBA loans	617	200
Amortization	-1,069	-474
Balance at end of period	13,321	6,559
Servicing liabilities:
Balance at beginning of period	5,971	33
Amortization	-442	-3
Balance at end of period	$5,529	$30

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Income Tax Disclosure [Abstract]
Provision (benefit) for income taxes for continuing operations	$7,534,000	$7,844,000
Effective income tax rate	40.53%	41.69%
Valuation allowance	$0
Income tax years under examination	December 31, 2004 through 2013

Subordinated_Debentures_and_Re1

Subordinated Debentures and Rescinded Stock Obligation - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Nov. 30, 2014	Aug. 31, 2014	Sep. 30, 2014	Dec. 31, 2005
Debt Instrument [Line Items]
Subordinated debentures	$18,582,000	$18,544,000
Debt instrument discount				8,300,000
Amortization of subordinated debentures	38,000
Rescinded stock obligation	150,000	933,000	15,500,000
Accrued interest payable	65,000	288,000	4,500,000
Central Bancorp, Inc [Member] | Subordinated Debentures [Member]
Debt Instrument [Line Items]
Subordinated debentures, unpaid principal amount					26,800,000	26,000,000
Subordinated debentures					18,500,000
Debt instrument discount					8,300,000
Fixed interest rate						6.26%
Variable interest rate basis	3 month LIBOR plus 140 basis
Maturity date of subordinated debentures	31-Dec-35
Frequency of interest payment	Quarterly
Amortization of subordinated debentures	$38,000

Stockholders_Equity_Additional

Stockholders' Equity - Additional Information (Detail) (USD $)	3 Months Ended	0 Months Ended
In Millions, except Share data, unless otherwise specified	Mar. 31, 2015	Jul. 27, 2010	Dec. 31, 2014
Stockholders Equity Note [Line Items]
Number of shares of common stock to be purchased by issuing warrants		250,000
Exercise price of stock warrants		9.6
Date from which warrants or rights exercisable	14-Oct-10
Warrants expiration date	14-Oct-15
Fair value of warrants outstanding		2
Outstanding stock warrants			0
Stock warrants [Member]
Stockholders Equity Note [Line Items]
Percentage of weighted average expected stock volatility for warrant		111.46%
Contract term of expected life assumption	5 years
Percentage of risk free rate for warrants		2.07%
Dividend yield		0.00%

Accumulated_Other_Comprehensiv2

Accumulated Other Comprehensive Income - Activity in Accumulated Other Comprehensive Income (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Accumulated Other Comprehensive Income [Line Items]
Balance at beginning of period	$463	($9,380)
Other comprehensive income (loss) before reclassification	7,920	5,292
Reclassification from accumulated other comprehensive income	-2,184	-1,421
Other comprehensive income (loss)	5,736	3,871
Balance at end of period	6,199	-5,509
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Accumulated Other Comprehensive Income [Line Items]
Balance at beginning of period	-985	-18,187
Other comprehensive income (loss) before reclassification	12,043	8,098
Reclassification from accumulated other comprehensive income	-2,184	-1,421
Other comprehensive income (loss)	9,859	6,677
Balance at end of period	8,874	-11,510
Accumulated Net Unrealized Investment Gain (Loss) [Member] | Interest-Only Strip [Member]
Accumulated Other Comprehensive Income [Line Items]
Balance at beginning of period	16	16
Other comprehensive income (loss) before reclassification		1
Reclassification from accumulated other comprehensive income
Other comprehensive income (loss)		1
Balance at end of period	16	17
Tax (Expense) Benefit [Member]
Accumulated Other Comprehensive Income [Line Items]
Balance at beginning of period	1,432	8,791
Other comprehensive income (loss) before reclassification	-4,123	-2,807
Other comprehensive income (loss)	-4,123	-2,807
Balance at end of period	($2,691)	$5,984

Accumulated_Other_Comprehensiv3

Accumulated Other Comprehensive Income - Additional Information (Detail) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013
Accumulated Other Comprehensive Income [Line Items]
Net realized gain (loss) on sale of investment securities	$2,184,000	$1,421,000
Net gain on sales of investment securities	2,184,000	1,421,000
Recognized in earnings resulting from the sale of investment securities	535,000	59,000	535,000	59,000
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Unrealized Investment Gain (Loss) [Member]
Accumulated Other Comprehensive Income [Line Items]
Net gain on sales of investment securities	$2,200,000	$1,400,000

Regulatory_Matters_Capital_Rat

Regulatory Matters - Capital Ratios of Hanmi Financial and Bank (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Hanmi Financial [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Actual Capital, Total capital to risk-weighted assets	$493,598	$493,598
Actual Capital, Tier 1 capital to risk-weighted assets	454,582	454,582
Actual Capital, Tier 1 capital to average assets	454,582	454,582
Actual Capital Percentage, Total capital to risk-weighted assets	15.40%	15.89%
Actual Capital Percentage, Tier 1 capital to risk-weighted assets	14.15%	14.63%
Actual Capital Percentage, Tier 1 capital to average assets	10.78%	10.91%
Minimum Regulatory Requirement Capital, Total capital to risk-weighted assets	252,777	248,501
Minimum Regulatory Requirement Capital, Tier 1 capital to risk-weighted assets	189,583	124,250
Minimum Regulatory Requirement Capital, Tier 1 capital to average assets	165,895	166,600
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%	4.00%
Minimum Regulatory Requirement Ratio for Tier 1 capital to average assets	4.00%	4.00%
Hanmi Financial [Member] | Common Equity [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Actual Capital, Tier 1 capital to risk-weighted assets	454,582
Actual Capital Percentage, Tier 1 capital to risk-weighted assets	14.15%
Minimum Regulatory Requirement Capital, Tier 1 capital to risk-weighted assets	142,187
Minimum Regulatory Requirement Ratio for Tier 1 capital to risk-weighted assets	4.50%
Hanmi Bank [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Actual Capital, Total capital to risk-weighted assets	482,965	470,934
Actual Capital, Tier 1 capital to risk-weighted assets	443,946	431,971
Actual Capital, Tier 1 capital to average assets	443,946	431,971
Actual Capital Percentage, Total capital to risk-weighted assets	15.33%	15.18%
Actual Capital Percentage, Tier 1 capital to risk-weighted assets	14.08%	13.93%
Actual Capital Percentage, Tier 1 capital to average assets	10.72%	10.39%
Minimum Regulatory Requirement Capital, Total capital to risk-weighted assets	252,348	248,157
Minimum Regulatory Requirement Capital, Tier 1 capital to risk-weighted assets	189,261	124,078
Minimum Regulatory Requirement Capital, Tier 1 capital to average assets	165,710	166,332
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%	4.00%
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	315,435	310,196
Minimum to Be Categorized as Well Capitalized Capital, Tier 1 capital to risk-weighted assets	252,348	186,118
Minimum to Be Categorized as Well Capitalized Capital, Tier 1 capital to average assets	207,137	207,915
Minimum to Be Categorized as Well Capitalized Percentage, Total capital to risk-weighted assets	10.00%	10.00%
Minimum to Be Categorized as Well Capitalized Percentage, Tier 1 capital to risk-weighted assets	8.00%	6.00%
Minimum to Be Categorized as Well Capitalized Percentage, Tier 1 capital to average assets	5.00%	5.00%
Hanmi Bank [Member] | Common Equity [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Actual Capital, Tier 1 capital to risk-weighted assets	443,946
Actual Capital Percentage, Tier 1 capital to risk-weighted assets	14.08%
Minimum Regulatory Requirement Capital, Tier 1 capital to risk-weighted assets	141,946
Minimum Regulatory Requirement Ratio for Tier 1 capital to risk-weighted assets	4.50%
Minimum to Be Categorized as Well Capitalized Capital, Tier 1 capital to risk-weighted assets	$205,033
Minimum to Be Categorized as Well Capitalized Percentage, Tier 1 capital to risk-weighted assets	6.50%

Fair_Value_Measurements_Additi

Fair Value Measurements - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	$8,677,000	$5,451,000	$390,000
Impaired loans, description	Nonaccrual Non-PCI loans with an unpaid principal balance over $100,000 and all performing restructured loans are reviewed individually for the amount of impairment, if any. Nonaccrual Non-PCI loans with an unpaid principal balance of $100,000 or less are evaluated for impairment collectively.
Transfers of assets between Level 1 and Level 2 of fair value hierarchy	0
Minimum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unpaid principal balance of Non-accrual Non-PCI loans reviewed individually for amount of impairment	100,000
Maximum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unpaid principal balance of Non-accrual Non-PCI loans reviewed collectively for amount of impairment	100,000
Significant Observable Inputs with No Active Market with Identical Characteristics [Member] | Non-recurring Basis [Member] | Non-Performing Loans Held for Sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	0	0
Significant Observable Inputs with No Active Market with Identical Characteristics [Member] | Non-recurring Basis [Member] | Small Business Administration Loans Held for Sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	$8,700,000	$5,500,000

Fair_Value_Measurements_Assets

Fair Value Measurements - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	$858,064	$1,060,717	$520,990
Mortgage-backed securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	492,896	573,286
U.S. government agency securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	63,355	128,207
Corporate bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	16,984	16,948
U.S treasury securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	163	163
Other securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	23,100	22,893
Equity securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	416	414
SBA loan pools securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	75,027	109,447
Municipal bonds-tax exempt [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	3,676	4,390
Municipal bonds-taxable [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	17,042	16,922
Collateralized mortgage obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	165,405	188,047
Recurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	63,518	128,370
Recurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets [Member] | U.S. government agency securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	63,355	128,207
Recurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets [Member] | U.S treasury securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	163	163
Recurring Basis [Member] | Significant Observable Inputs with No Active Market with Identical Characteristics [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	794,130	931,224
Recurring Basis [Member] | Significant Observable Inputs with No Active Market with Identical Characteristics [Member] | Mortgage-backed securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	492,896	573,286
Recurring Basis [Member] | Significant Observable Inputs with No Active Market with Identical Characteristics [Member] | Corporate bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	16,984	16,948
Recurring Basis [Member] | Significant Observable Inputs with No Active Market with Identical Characteristics [Member] | Other securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	23,100	22,893
Recurring Basis [Member] | Significant Observable Inputs with No Active Market with Identical Characteristics [Member] | SBA loan pools securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	75,027	109,447
Recurring Basis [Member] | Significant Observable Inputs with No Active Market with Identical Characteristics [Member] | Municipal bonds-tax exempt [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	3,676	3,681
Recurring Basis [Member] | Significant Observable Inputs with No Active Market with Identical Characteristics [Member] | Municipal bonds-taxable [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	17,042	16,922
Recurring Basis [Member] | Significant Unobservable Inputs [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	416	1,123
Recurring Basis [Member] | Significant Unobservable Inputs [Member] | Equity securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	416	414
Recurring Basis [Member] | Significant Unobservable Inputs [Member] | Municipal bonds-tax exempt [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale		709
Recurring Basis [Member] | Collateralized mortgage obligations [Member] | Significant Observable Inputs with No Active Market with Identical Characteristics [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	$165,405	$188,047

Fair_Value_Measurements_Reconc

Fair Value Measurements - Reconciliation and Income Statement Classification of Gains and Losses for All Assets and Liabilities (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015
Municipal bonds-tax exempt [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Beginning Balance	$709,000
Purchases, Issuances and Settlement	-709,000
Realized Gains or Losses in Earnings	0
Equity securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Beginning Balance	414,000
Realized Gains or Losses in Earnings	0
Unrealized Gains or Losses in Other Comprehensive Income	2,000
Ending Balance	$416,000

Fair_Value_Measurements_Reconc1

Fair Value Measurements - Reconciliation and Income Statement Classification of Gains and Losses for All Assets and Liabilities (Parenthetical) (Detail) (Equity securities [Member], USD $)	3 Months Ended
	Mar. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of equity securities	2
Security One [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Purchases, Issuances and Settlement	$216,000
Security Two [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Purchases, Issuances and Settlement	$200,000

Fair_Value_Measurements_Assets1

Fair Value Measurements - Assets and Liabilities Measured at Fair Value on Non-Recurring Basis (Detail) (Non-recurring Basis [Member], USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unrealized losses impaired loans	$1,200	$2,774
Unrealized losses other real estate owned	0	0
Significant Observable Inputs with No Active Market with Identical Characteristics [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	32,116	32,171
Other real estate owned	12,114	15,790
Significant Unobservable Inputs [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	$956	$781

Fair_Value_Measurements_Assets2

Fair Value Measurements - Assets and Liabilities Measured at Fair Value on Non-Recurring Basis (Parenthetical) (Detail) (Non-recurring Basis [Member], USD $)	Mar. 31, 2015	Dec. 31, 2014
Impaired Loans [Member] | Real estate loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	$30,100,000	$30,000,000
Impaired Loans [Member] | Commercial and industrial loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	1,100,000	1,200,000
Impaired Loans [Member] | Consumer loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	1,800,000	1,700,000
Other Real Estate Owned [Member] | Commercial property loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-performing loans held for sale	12,000,000	13,200,000
Other Real Estate Owned [Member] | Residential property loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-performing loans held for sale	$163,000	$2,600,000

Fair_Value_Measurements_Estima

Fair Value Measurements - Estimated Fair Values of Financial Instruments (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
In Thousands, unless otherwise specified
Financial assets:
Available-for-Sale, Estimated Fair Value	$858,064	$1,060,717	$520,990
Accrued interest receivable	9,238	9,749
Investment in FRB stock	12,273	12,273
Financial liabilities:
Noninterest-bearing deposits	1,064,695	1,022,972
Interest-bearing deposits	2,487,981	2,533,774
Accrued interest payable	3,497	3,450
Carrying Amount [Member]
Financial assets:
Cash and cash equivalents	182,054	158,320
Available-for-Sale, Estimated Fair Value	858,064	1,060,717
Loans receivable, net of allowance for loan losses	2,767,080	2,735,932
Loans held for sale	8,677	5,451
Accrued interest receivable	9,238	9,749
Servicing assets	13,321	13,773
Investment in FHLB stock	17,581	17,580
Investment in FRB stock	12,273	12,273
Financial liabilities:
Noninterest-bearing deposits	1,064,695	1,022,972
Interest-bearing deposits	2,487,981	2,533,774
Servicing liabilities	5,529	5,971
Borrowings	18,582	168,544
Accrued interest payable	3,497	3,450
Off-balance sheet items:
Commitments to extend credit	297,912	309,584
Standby letters of credit	6,299	8,982
Fair Value [Member] | Quoted Prices in Active Markets for Identical Assets [Member]
Financial assets:
Cash and cash equivalents	182,054	158,320
Available-for-Sale, Estimated Fair Value	63,518	128,370
Accrued interest receivable	9,238	9,749
Investment in FHLB stock	17,581	17,580
Investment in FRB stock	12,273	12,273
Financial liabilities:
Accrued interest payable	3,497	3,450
Fair Value [Member] | Significant Observable Inputs with No Active Market with Identical Characteristics [Member]
Financial assets:
Available-for-Sale, Estimated Fair Value	794,130	931,224
Loans held for sale	8,677	5,451
Financial liabilities:
Noninterest-bearing deposits	1,064,695	1,022,972
Fair Value [Member] | Significant Unobservable Inputs [Member]
Financial assets:
Available-for-Sale, Estimated Fair Value	416	1,123
Loans receivable, net of allowance for loan losses	2,772,612	2,738,401
Servicing assets	13,321	13,773
Financial liabilities:
Interest-bearing deposits	2,500,027	2,528,304
Servicing liabilities	5,529	5,971
Borrowings	18,582	168,544
Off-balance sheet items:
Commitments to extend credit	297,912	309,584
Standby letters of credit	$6,299	$8,982

ShareBased_Compensation_Additi

Share-Based Compensation - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-based compensation expense	$528,000	$605,000
Related tax benefits on non-qualified stock options	$30,000	$112,000
Number of shares, stock options exercised	19,581	15,195
Restricted stock awards, continuous employment period for vesting of grant	Three to five years

ShareBased_Compensation_Unreco

Share-Based Compensation - Unrecognized Share-Based Compensation Expense (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Expense	$3,497
Average Expected Recognition Period	1 year 9 months 18 days
Stock option awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Expense	1,137
Average Expected Recognition Period	1 year 7 months 6 days
Restricted stock awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Expense	$2,360
Average Expected Recognition Period	2 years

ShareBased_Compensation_Summar

Share-Based Compensation - Summary of Stock Options Outstanding under Plans (Detail) (USD $)	3 Months Ended		12 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Number of Shares, Options outstanding at beginning of period	603,872
Number of Shares, Options exercised	-19,581	-15,195
Number of Shares, Options forfeited	-501
Number of Shares, Options expired	-125
Number of Shares, Options outstanding at end of period	583,665		603,872
Number of Shares, Options exercisable at end of period	205,058
Weighted-Average Exercise Price Per Share, Options outstanding at beginning of period	$23.78
Weighted-Average Exercise Price Per Share, Options exercised	$14.20
Weighted-Average Exercise Price Per Share, Options forfeited	$12.54
Weighted-Average Exercise Price Per Share, Options expired	$144
Weighted-Average Exercise Price Per Share, Options outstanding at end of period	$24.09		$23.78
Weighted-Average Exercise Price Per Share, Options exercisable at end of period	$35.12
Weighted-Average Remaining Contractual Life, Options outstanding	8 years		8 years 3 months 18 days
Weighted-Average Remaining Contractual Life, Options exercised	8 years
Weighted-Average Remaining Contractual Life, Options forfeited	7 years 8 months 12 days
Weighted-Average Remaining Contractual Life, Options expired	1 year 1 month 6 days
Weighted-Average Remaining Contractual Life, Options exercisable at end of period	6 years 9 months 18 days
Aggregate Intrinsic Value of In-the-Money Options, Options outstanding at beginning of period	$2,853
Aggregate Intrinsic Value of In-the-Money Options, Options exercised	0
Aggregate Intrinsic Value of In-the-Money Options, Options forfeited	0
Aggregate Intrinsic Value of In-the-Money Options, Options expired	0
Aggregate Intrinsic Value of In-the-Money Options, Options outstanding at end of period	2,383		2,853
Aggregate Intrinsic Value of In-the-Money Options, Options exercisable at end of period	$1,158

ShareBased_Compensation_Summar1

Share-Based Compensation - Summary of Stock Options Outstanding under Plans (Parenthetical) (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Intrinsic value represents the excess of the closing stock price related to options outstanding	$21.15	$21.81

ShareBased_Compensation_Schedu

Share-Based Compensation - Schedule of Restricted Stock Awards under 2013 Plan (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Number of Shares, Restricted stock at beginning of period	173,222
Number of Shares, Restricted stock granted	3,850
Number of Shares, Restricted stock vested	-2,000
Number of Shares, Restricted stock at end of period	175,072
Weighted-Average Grant Date Fair Value Per Share, Restricted stock at beginning of period	$19.58
Weighted-Average Grant Date Fair Value Per Share, Restricted stock granted	$20.33
Weighted-Average Grant Date Fair Value Per Share, Restricted stock vested	$24.45
Weighted-Average Grant Date Fair Value Per Share, Restricted stock at end of period	$19.55

Earnings_Per_Share_Reconciliat

Earnings Per Share - Reconciliation of Components Used to Derive Basic and Diluted EPS (Detail) (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Jun. 30, 2014	Mar. 31, 2014
Earnings Per Share [Abstract]
Income from continuing operations, net of taxes	$11,054		$10,969
Income from discontinued operations, net of taxes			22
Net income	11,054		10,991
Effect of dilutive securities - options and unvested restricted stock	0		0
Income from continuing operations, net of taxes	11,054		10,969
Income from discontinued operations, net of taxes			22
Net income	$11,054		$10,991
Weighted-Average Shares, Income from continuing operations, net of taxes	31,747,299		31,659,705
Weighted-Average Shares, Basic EPS	31,747,299		31,659,705
Weighted-Average Shares, Effect of dilutive securities - options and unvested restricted stock	279,424		274,458
Weighted-Average Shares, Income from continuing operations, net of taxes	32,026,723		31,934,163
Weighted-Average Shares, Diluted EPS	32,026,723		31,934,163
Per Share Amount, Income from continuing operations, net of taxes	$0.35		$0.35
Per Share Amount, Income from discontinued operations, net of taxes	$0		$0
Per Share Amount, Basic EPS	$0.35		$0.35
Per Share Amount, Effect of dilutive securities - options and unvested restricted stock	$0		$0
Per Share Amount, Income from continuing operations, net of taxes	$0.35		$0.34
Per Share Amount, Income from discontinued operations, net of taxes	$0	$0.01	$0
Diluted earnings per share	$0.35		$0.34

Earnings_Per_Share_Additional_

Earnings Per Share - Additional Information (Detail) (Stock option awards [Member])	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Stock option awards [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive shares	138,725	34,250

OffBalance_Sheet_Commitments_D

Off-Balance Sheet Commitments - Distribution of Undisbursed Loan Commitments (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Loss Contingencies [Line Items]
Total undisbursed loan commitments	$308,801	$325,612
Commitments to extend credit [Member]
Loss Contingencies [Line Items]
Total undisbursed loan commitments	297,912	309,584
Standby letters of credit [Member]
Loss Contingencies [Line Items]
Total undisbursed loan commitments	6,299	8,982
Commercial letters of credit [Member]
Loss Contingencies [Line Items]
Total undisbursed loan commitments	$4,590	$7,046

Liquidity_Additional_Informati

Liquidity - Additional Information (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
	Financial_Institution
Line of Credit Facility [Line Items]
Bank's FHLB borrowings		$150,000,000
Line of credit	95,000,000
Number of financial institutions	3
Hanmi Bank [Member]
Line of Credit Facility [Line Items]
Broker deposits	99,000
Total borrowing capacity based on pledged collateral	649,600,000	649,500,000
Borrowing capacity available based on pledged collateral	649,600,000	499,500,000
Bank's FHLB borrowings	0	150,000,000
Borrowing percentage of assets	0.00%	3.54%
Amount available from borrowing source		55,900,000
Carrying value for loans pledged by Bank		77,400,000
Borrowings		0
Maximum borrowing capacity of line of credit	$100,000,000
Hanmi Bank [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Percentage of borrowings from FHLB	30.00%

Segment_Reporting_Additional_I

Segment Reporting - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2015
	Segment
Segment Reporting [Abstract]
Number of operating segment	1