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Fair Value Measurements - Reconciliation and Income Statement Classification of Gains and Losses for All Assets and Liabilities (Detail) (USD $) | 3 Months Ended
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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 hafc_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisAssetValue / us-gaap_EligibleItemOrGroupForFairValueOptionAxis = us-gaap_NontaxableMunicipalBondsMember
Purchases, Issuances and Settlement | (709,000)us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases / us-gaap_EligibleItemOrGroupForFairValueOptionAxis = us-gaap_NontaxableMunicipalBondsMember
Realized Gains or Losses in Earnings | 0 hafc_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainsAndLossesReportedInEarnings / us-gaap_EligibleItemOrGroupForFairValueOptionAxis = us-gaap_NontaxableMunicipalBondsMember
Equity securities [Member] |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
Beginning Balance | 414,000 hafc_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisAssetValue / us-gaap_EligibleItemOrGroupForFairValueOptionAxis = us-gaap_EquitySecuritiesMember
Realized Gains or Losses in Earnings | 0 hafc_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainsAndLossesReportedInEarnings / us-gaap_EligibleItemOrGroupForFairValueOptionAxis = us-gaap_EquitySecuritiesMember
Unrealized Gains or Losses in Other Comprehensive Income | 2,000 us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss / us-gaap_EligibleItemOrGroupForFairValueOptionAxis = us-gaap_EquitySecuritiesMember
Ending Balance | $ 416,000 hafc_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisAssetValue / us-gaap_EligibleItemOrGroupForFairValueOptionAxis = us-gaap_EquitySecuritiesMember

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- Definition Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gains And Losses Reported In Earnings + References No definition available. + Details
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Namespace Prefix: | hafc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Asset Value + References No definition available. + Details
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Namespace Prefix: | hafc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
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Period Type: | duration

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- Definition Amount of gain (loss) recognized in other comprehensive income (loss) for financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1a) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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Balance Type: | credit
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- Definition Amount of purchases of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |