Quarterly report pursuant to Section 13 or 15(d)

Loans - Additional Information (Detail)

v2.4.1.9
Loans - Additional Information (Detail) (USD $)
 3 Months Ended
Mar. 31, 2015
Property
Mar. 31, 2014
Sep. 30, 2014
Dec. 31, 2014
Property
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Accrued interest receivable $ 9,238,000us-gaap_InterestReceivable     $ 9,749,000us-gaap_InterestReceivable
Loans receivable 2,767,080,000us-gaap_LoansAndLeasesReceivableNetReportedAmount 2,221,520,000us-gaap_LoansAndLeasesReceivableNetReportedAmount   2,735,832,000us-gaap_LoansAndLeasesReceivableNetReportedAmount
Non-PCI loans receivable reclassified as Non-PCI loans held for sale 0us-gaap_TransferOfPortfolioLoansAndLeasesToHeldForSale1 0us-gaap_TransferOfPortfolioLoansAndLeasesToHeldForSale1    
Sale of loans held for sale 19,854,000us-gaap_ProceedsFromSaleOfLoansHeldForSale 5,958,000us-gaap_ProceedsFromSaleOfLoansHeldForSale    
Non-PCI loans held for sale reclassified to Non-PCI loans receivable 0us-gaap_TransferOfLoansHeldForSaleToPortfolioLoans1 0us-gaap_TransferOfLoansHeldForSaleToPortfolioLoans1    
Allowance for off-balance sheet items 1,100,000hafc_AllowanceForOffBalanceSheetItems 1,600,000hafc_AllowanceForOffBalanceSheetItems    
Number of real estate properties 19us-gaap_NumberOfRealEstateProperties     25us-gaap_NumberOfRealEstateProperties
Net carrying value of other real estate property 12,114,000us-gaap_OtherRealEstateAndForeclosedAssets     15,790,000us-gaap_OtherRealEstateAndForeclosedAssets
TDR loans receivable 26,000,000hafc_LoansHeldForSaleExcludedFromTdrLoansReceivable     26,300,000hafc_LoansHeldForSaleExcludedFromTdrLoansReceivable
Principal and interest due 3 months      
Reserves relating to loans included in allowance for loan losses 2,200,000hafc_ReserveRelatedToTdrLoansIncludedInAllowanceForLoanLosses     2,900,000hafc_ReserveRelatedToTdrLoansIncludedInAllowanceForLoanLosses
Net carrying value 508,000us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 1,973,000us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2    
Number of loans restructured 4hafc_NumberOfDefaultLoansRestructured      
Loans on non-accrual status 29,258,000us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus     25,282,000us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
Serviced loans sold to unaffiliated parties 486,100,000hafc_ServicedLoansSoldToUnaffiliatedParties 340,500,000hafc_ServicedLoansSoldToUnaffiliatedParties    
Insurance reimbursement settlement     611,000,000us-gaap_InsuranceSettlementsReceivable  
Recoveries of previously charged-off and reimbursed Commercial SLA loans which needs to be reimbursed 95.00%hafc_FdicPercentageOfLossRecoveries      
FDIC loss sharing liability 543,000hafc_FdicIndemnificationLiability     2,074,000hafc_FdicIndemnificationLiability
FDIC recoveries partially offset 935,000us-gaap_InsuranceRecoveries      
Reimbursable expense owed to bank 392,000us-gaap_CostOfReimbursableExpense      
PCI Loans [Member]        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Loans receivable 39,505,000us-gaap_LoansAndLeasesReceivableNetReportedAmount
/ hafc_ImpairedFinancialReceivableTypeAxis
= hafc_PurchaseCreditImpairedLoansMember 		    43,475,000us-gaap_LoansAndLeasesReceivableNetReportedAmount
/ hafc_ImpairedFinancialReceivableTypeAxis
= hafc_PurchaseCreditImpairedLoansMember
Loans on non-accrual status 0us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
/ hafc_ImpairedFinancialReceivableTypeAxis
= hafc_PurchaseCreditImpairedLoansMember 		    0us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
/ hafc_ImpairedFinancialReceivableTypeAxis
= hafc_PurchaseCreditImpairedLoansMember
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%hafc_FdicPercentageOfLossRecoveries
/ us-gaap_RangeAxis
= us-gaap_MinimumMember 		 
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%hafc_FdicPercentageOfLossRecoveries
/ us-gaap_RangeAxis
= us-gaap_MaximumMember 		 
Central Bancorp, Inc [Member]        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Net carrying value of other real estate property 11,800,000us-gaap_OtherRealEstateAndForeclosedAssets
/ us-gaap_BusinessAcquisitionAxis
= hafc_CentralBancorpIncMember 		    15,300,000us-gaap_OtherRealEstateAndForeclosedAssets
/ us-gaap_BusinessAcquisitionAxis
= hafc_CentralBancorpIncMember
Securities Pledged as Collateral [Member]        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Loans receivable 802,000,000us-gaap_LoansAndLeasesReceivableNetReportedAmount
/ us-gaap_FinancialInstrumentAxis
= us-gaap_SecuritiesPledgedAsCollateralMember 		    840,000,000us-gaap_LoansAndLeasesReceivableNetReportedAmount
/ us-gaap_FinancialInstrumentAxis
= us-gaap_SecuritiesPledgedAsCollateralMember
Loans and Finance Receivables [Member]        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Accrued interest receivable $ 6,200,000us-gaap_InterestReceivable
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= us-gaap_LoansAndFinanceReceivablesMember 		    $ 6,400,000us-gaap_InterestReceivable
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= us-gaap_LoansAndFinanceReceivablesMember