Quarterly report pursuant to Section 13 or 15(d)

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

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Regulatory Matters - Capital Ratios of Hanmi Financial and Bank (Detail) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2013
Mar. 31, 2012
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Minimum Regulatory Requirement Ratio for Total Capital to Risk-Weighted Assets 8.00%  
Minimum Regulatory Requirement Ratio for Tier 1 Capital to Risk-Weighted Assets 4.00%  
Minimum Regulatory Requirement Ratio for Tier 1 Capital to Average Assets 4.00%  
Minimum to Be Categorized as Well Capitalized Percentage, Total Capital to Risk-Weighted Assets 10.00%  
Minimum to Be Categorized as Well Capitalized Percentage, Tier 1 Capital to Risk-Weighted Assets 6.00%  
Hanmi Financial [Member]
   
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Actual Capital, Total Capital to Risk-Weighted Assets $ 439,587 $ 394,973
Actual Capital, Tier 1 Capital to Risk-Weighted Assets 410,825 367,927
Actual Capital, Tier 1 Capital to Average Assets 410,825 367,927
Actual Capital Percentage, Total Capital to Risk-Weighted Assets 19.45% 18.74%
Actual Capital Percentage, Tier 1 Capital to Risk-Weighted Assets 18.17% 17.46%
Actual Capital Percentage, Tier 1 Capital to Average Assets 14.68% 13.44%
Minimum Regulatory Requirement Capital, Total Capital to Risk-Weighted Assets 180,839 168,569
Minimum Regulatory Requirement Capital, Tier 1 Capital to Risk-Weighted Assets 90,419 84,284
Minimum Regulatory Requirement Capital, Tier 1 Capital to Average Assets 111,968 109,456
Minimum Regulatory Requirement Ratio for Total Capital to Risk-Weighted Assets 8.00% 8.00%
Minimum Regulatory Requirement Ratio for Tier 1 Capital to Risk-Weighted Assets 4.00% 4.00%
Minimum Regulatory Requirement Ratio for Tier 1 Capital to Average Assets 4.00% 4.00%
Hanmi Bank [Member]
   
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Actual Capital, Total Capital to Risk-Weighted Assets 421,661 373,171
Actual Capital, Tier 1 Capital to Risk-Weighted Assets 393,015 346,154
Actual Capital, Tier 1 Capital to Average Assets 393,015 346,154
Actual Capital Percentage, Total Capital to Risk-Weighted Assets 18.69% 17.74%
Actual Capital Percentage, Tier 1 Capital to Risk-Weighted Assets 17.42% 16.45%
Actual Capital Percentage, Tier 1 Capital to Average Assets 14.07% 12.67%
Minimum Regulatory Requirement Capital, Total Capital to Risk-Weighted Assets 180,515 168,325
Minimum Regulatory Requirement Capital, Tier 1 Capital to Risk-Weighted Assets 90,257 84,162
Minimum Regulatory Requirement Capital, Tier 1 Capital to Average Assets 111,758 109,247
Minimum Regulatory Requirement Ratio for Total Capital to Risk-Weighted Assets 8.00% 8.00%
Minimum Regulatory Requirement Ratio for Tier 1 Capital to Risk-Weighted Assets 4.00% 4.00%
Minimum Regulatory Requirement Ratio for Tier 1 Capital to Average Assets 4.00% 4.00%
Minimum to Be Categorized as Well Capitalized Capital, Total Capital to Risk-Weighted Assets 225,644 210,406
Minimum to Be Categorized as Well Capitalized Capital, Tier 1 Capital to Risk-Weighted Assets 135,386 126,243
Minimum to Be Categorized as Well Capitalized Capital, Tier 1 Capital to Average Assets $ 139,698 $ 136,559
Minimum to Be Categorized as Well Capitalized Percentage, Total Capital to Risk-Weighted Assets 10.00% 10.00%
Minimum to Be Categorized as Well Capitalized Percentage, Tier 1 Capital to Risk-Weighted Assets 6.00% 6.00%
Minimum to Be Categorized as Well Capitalized Percentage, Tier 1 Capital to Average Assets 5.00% 5.00%