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Subsequent Events (Details) - CSF Acquisition [Member] - Subsequent Event [Member] $ in Millions | Oct. 27, 2016 USD ($)
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Subsequent Event [Line Items] |
Equipment leases acquired | $ 209
Equipment leases expected to be transferred prior to year-end 2016 | $ 25

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- Definition Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Equipment Leases + References No definition available. + Details
Name: | hafc_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedEquipmentLeases
Namespace Prefix: | hafc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Equipment Leases Receivable In Future + References No definition available. + Details
Name: | hafc_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedEquipmentLeasesReceivableInFuture
Namespace Prefix: | hafc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
Name: | us-gaap_SubsequentEventLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_BusinessAcquisitionAxis=hafc_CommercialSpecialtyFinanceUnitOfBancOfCaliforniaAcquisitionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |