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Loans - Troubled Debt Restructurings, Disaggregated by Loan Class (Parenthetical) (Detail) (USD $) | 3 Months Ended
--- | ---
Mar. 31, 2014 | Mar. 31, 2013
Other [Member] | Real estate loans [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Loan modification made through deferrals principal payment | $ 943,000 |
Commercial term [Member] | Commercial and industrial loans [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Loan modification made through deferrals principal payment | 491,000 | 7,000
Loan modifications made through reduction of principal or accrued interest payments | 107,000 |
Amount of loan modification through extension of maturity | 190,000 | 198,000
Commercial lines of credit [Member] | Commercial and industrial loans [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Loan modification made through deferrals principal payment | 242,000 |
International loans [Member] | Commercial and industrial loans [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Loan modifications made through reduction of principal or accrued interest payments |  | $ 1,400,000

X
- Definition Amount of loan modification through extension of maturity. + References No definition available. + Details
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Namespace Prefix: | hafc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Loan modification made through deferral of principal payment. + References No definition available. + Details
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Namespace Prefix: | hafc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Loan modification made through reduction of principal or accrued interest payment. + References No definition available. + Details
Name: | hafc_LoanModificationMadeThroughReductionOfPrincipalOrAccruedInterestPayment
Namespace Prefix: | hafc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_FinancingReceivableModificationsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration