Quarterly report pursuant to Section 13 or 15(d)

Accounting for Investments in Qualified Affordable Housing Projects - Additional Information (Detail)

v2.4.1.9
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 $ 1,100,000us-gaap_CumulativeEffectOfProspectiveApplicationOfNewAccountingPrinciple      
Decrease in net income     44,000hafc_DecreaseInNetIncome  
Impairment of investments   0us-gaap_ImpairmentOfInvestments   0us-gaap_ImpairmentOfInvestments
Investment in low income housing   20,700,000hafc_InvestmentsInQualifiedAffordableHousingProjects   21,300,000hafc_InvestmentsInQualifiedAffordableHousingProjects
Unfunded commitments on low income housing   9,900,000us-gaap_OtherCommitment   11,900,000us-gaap_OtherCommitment
Income tax expense   584,000us-gaap_OtherTaxExpenseBenefit 171,000us-gaap_OtherTaxExpenseBenefit  
Tax credit and other benefit received from tax expenses   $ 829,000us-gaap_IncomeTaxReconciliationTaxCredits $ 255,000us-gaap_IncomeTaxReconciliationTaxCredits