Annual report pursuant to Section 13 and 15(d)

Regulatory Matters - Capital Ratios of Hanmi Financial and Bank (Detail)

v2.4.1.9
Regulatory Matters - Capital Ratios of Hanmi Financial and Bank (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Minimum Regulatory Requirement Ratio for Total capital to risk-weighted assets 8.00%us-gaap_CapitalRequiredForCapitalAdequacyToRiskWeightedAssets  
Minimum Regulatory Requirement Ratio for Tier 1 capital to risk-weighted assets 4.00%us-gaap_TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets  
Minimum Regulatory Requirement Ratio for Tier 1 capital to average assets 4.00%us-gaap_TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets  
Minimum to Be Categorized as Well Capitalized Percentage, Total capital to risk-weighted assets 10.00%us-gaap_CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets  
Minimum to Be Categorized as Well Capitalized Percentage, Tier 1 capital to risk-weighted assets 6.00%us-gaap_TierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets  
Hanmi Financial [Member]    
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Actual Capital, Total capital to risk-weighted assets $ 493,598us-gaap_Capital
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember 		$ 426,614us-gaap_Capital
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Actual Capital, Tier 1 capital to risk-weighted assets 454,582us-gaap_TierOneRiskBasedCapital
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember 		395,763us-gaap_TierOneRiskBasedCapital
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Actual Capital, Tier 1 capital to average assets 454,582us-gaap_TierOneLeverageCapital
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember 		395,763us-gaap_TierOneLeverageCapital
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Actual Capital Percentage, Total capital to risk-weighted assets 15.89%us-gaap_CapitalToRiskWeightedAssets
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember 		17.48%us-gaap_CapitalToRiskWeightedAssets
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Actual Capital Percentage, Tier 1 capital to risk-weighted assets 14.63%us-gaap_TierOneRiskBasedCapitalToRiskWeightedAssets
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember 		16.26%us-gaap_TierOneRiskBasedCapitalToRiskWeightedAssets
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Actual Capital Percentage, Tier 1 capital to average assets 10.91%us-gaap_TierOneLeverageCapitalToAverageAssets
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember 		13.62%us-gaap_TierOneLeverageCapitalToAverageAssets
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Minimum Regulatory Requirement Capital, Total capital to risk-weighted assets 248,501us-gaap_CapitalRequiredForCapitalAdequacy
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember 		195,210us-gaap_CapitalRequiredForCapitalAdequacy
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Minimum Regulatory Requirement Capital, Tier 1 capital to risk-weighted assets 124,250us-gaap_TierOneRiskBasedCapitalRequiredForCapitalAdequacy
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember 		97,605us-gaap_TierOneRiskBasedCapitalRequiredForCapitalAdequacy
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Minimum Regulatory Requirement Capital, Tier 1 capital to average assets 166,600us-gaap_TierOneLeverageCapitalRequiredForCapitalAdequacy
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember 		116,249us-gaap_TierOneLeverageCapitalRequiredForCapitalAdequacy
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Minimum Regulatory Requirement Ratio for Total capital to risk-weighted assets 8.00%us-gaap_CapitalRequiredForCapitalAdequacyToRiskWeightedAssets
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember 		8.00%us-gaap_CapitalRequiredForCapitalAdequacyToRiskWeightedAssets
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Minimum Regulatory Requirement Ratio for Tier 1 capital to risk-weighted assets 4.00%us-gaap_TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember 		4.00%us-gaap_TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Minimum Regulatory Requirement Ratio for Tier 1 capital to average assets 4.00%us-gaap_TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember 		4.00%us-gaap_TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Hanmi Bank [Member]    
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Actual Capital, Total capital to risk-weighted assets 470,934us-gaap_Capital
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember 		409,095us-gaap_Capital
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Actual Capital, Tier 1 capital to risk-weighted assets 431,971us-gaap_TierOneRiskBasedCapital
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember 		378,295us-gaap_TierOneRiskBasedCapital
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Actual Capital, Tier 1 capital to average assets 431,971us-gaap_TierOneLeverageCapital
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember 		378,295us-gaap_TierOneLeverageCapital
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Actual Capital Percentage, Total capital to risk-weighted assets 15.18%us-gaap_CapitalToRiskWeightedAssets
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember 		16.79%us-gaap_CapitalToRiskWeightedAssets
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Actual Capital Percentage, Tier 1 capital to risk-weighted assets 13.93%us-gaap_TierOneRiskBasedCapitalToRiskWeightedAssets
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember 		15.53%us-gaap_TierOneRiskBasedCapitalToRiskWeightedAssets
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Actual Capital Percentage, Tier 1 capital to average assets 10.39%us-gaap_TierOneLeverageCapitalToAverageAssets
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember 		13.05%us-gaap_TierOneLeverageCapitalToAverageAssets
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Minimum Regulatory Requirement Capital, Total capital to risk-weighted assets 248,157us-gaap_CapitalRequiredForCapitalAdequacy
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember 		194,880us-gaap_CapitalRequiredForCapitalAdequacy
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Minimum Regulatory Requirement Capital, Tier 1 capital to risk-weighted assets 124,078us-gaap_TierOneRiskBasedCapitalRequiredForCapitalAdequacy
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember 		97,440us-gaap_TierOneRiskBasedCapitalRequiredForCapitalAdequacy
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Minimum Regulatory Requirement Capital, Tier 1 capital to average assets 166,332us-gaap_TierOneLeverageCapitalRequiredForCapitalAdequacy
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember 		115,984us-gaap_TierOneLeverageCapitalRequiredForCapitalAdequacy
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Minimum Regulatory Requirement Ratio for Total capital to risk-weighted assets 8.00%us-gaap_CapitalRequiredForCapitalAdequacyToRiskWeightedAssets
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember 		8.00%us-gaap_CapitalRequiredForCapitalAdequacyToRiskWeightedAssets
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Minimum Regulatory Requirement Ratio for Tier 1 capital to risk-weighted assets 4.00%us-gaap_TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember 		4.00%us-gaap_TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Minimum Regulatory Requirement Ratio for Tier 1 capital to average assets 4.00%us-gaap_TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember 		4.00%us-gaap_TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Minimum to Be Categorized as Well Capitalized Capital, Total capital to risk-weighted assets 310,196us-gaap_CapitalRequiredToBeWellCapitalized
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember 		243,600us-gaap_CapitalRequiredToBeWellCapitalized
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Minimum to Be Categorized as Well Capitalized Capital, Tier 1 capital to risk-weighted assets 186,118us-gaap_TierOneRiskBasedCapitalRequiredToBeWellCapitalized
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember 		146,160us-gaap_TierOneRiskBasedCapitalRequiredToBeWellCapitalized
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Minimum to Be Categorized as Well Capitalized Capital, Tier 1 capital to average assets $ 207,915us-gaap_TierOneLeverageCapitalRequiredToBeWellCapitalized
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember 		$ 144,980us-gaap_TierOneLeverageCapitalRequiredToBeWellCapitalized
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Minimum to Be Categorized as Well Capitalized Percentage, Total capital to risk-weighted assets 10.00%us-gaap_CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember 		10.00%us-gaap_CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Minimum to Be Categorized as Well Capitalized Percentage, Tier 1 capital to risk-weighted assets 6.00%us-gaap_TierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember 		6.00%us-gaap_TierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Minimum to Be Categorized as Well Capitalized Percentage, Tier 1 capital to average assets 5.00%us-gaap_TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember 		5.00%us-gaap_TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember