Annual report pursuant to Section 13 and 15(d)

Income Taxes - Reconciliation between Federal Statutory Income Tax Rate and Effective Tax Rate (Detail)

v2.4.1.9
Income Taxes - Reconciliation between Federal Statutory Income Tax Rate and Effective Tax Rate (Detail)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Income Tax Disclosure [Abstract]      
Federal statutory income tax rate 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
State taxes, net of federal tax benefits 5.86%hafc_StateIncomeTaxesNetOfFederalIncomeTaxBenefit 4.40%hafc_StateIncomeTaxesNetOfFederalIncomeTaxBenefit 0.11%hafc_StateIncomeTaxesNetOfFederalIncomeTaxBenefit
Tax-exempt municipal securities (0.07%)hafc_EffectiveIncomeTaxRateReconciliationMunicipalSecuritiesTaxBenefit (0.16%)hafc_EffectiveIncomeTaxRateReconciliationMunicipalSecuritiesTaxBenefit (0.32%)hafc_EffectiveIncomeTaxRateReconciliationMunicipalSecuritiesTaxBenefit
Tax credit-federal (2.27%)hafc_EffectiveIncomeTaxRateReconciliationFederalTaxCredits (1.88%)hafc_EffectiveIncomeTaxRateReconciliationFederalTaxCredits (2.90%)hafc_EffectiveIncomeTaxRateReconciliationFederalTaxCredits
Bargain purchase gain (7.03%)hafc_EffectiveIncomeTaxRateReconciliationBargainPurchaseGain 0.00%hafc_EffectiveIncomeTaxRateReconciliationBargainPurchaseGain 0.00%hafc_EffectiveIncomeTaxRateReconciliationBargainPurchaseGain
Other (0.01%)us-gaap_EffectiveIncomeTaxRateReconciliationDeductionsOther (0.99%)us-gaap_EffectiveIncomeTaxRateReconciliationDeductionsOther (0.35%)us-gaap_EffectiveIncomeTaxRateReconciliationDeductionsOther
Valuation allowance 0.00%hafc_ChangeInValuationAllowancePercent 0.00%hafc_ChangeInValuationAllowancePercent (138.58%)hafc_ChangeInValuationAllowancePercent
Effective tax rate 31.48%hafc_EffectiveIncomeTaxBenefitRate 36.37%hafc_EffectiveIncomeTaxBenefitRate (107.04%)hafc_EffectiveIncomeTaxBenefitRate