Annual report pursuant to Section 13 and 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
Dec. 31, 2019
Dec. 31, 2018
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 6.00%  
Minimum Regulatory Requirement Ratio for Tier 1 capital to average assets 4.00%  
Minimum to Be Categorized as Well Capitalized Ratio, Total capital to risk-weighted assets 10.00%  
Minimum to Be Categorized as Well Capitalized Ratio, Tier 1 capital to risk-weighted assets 8.00%  
Hanmi Financial    
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Actual Capital, Total capital to risk-weighted assets $ 714,288 $ 682,398
Actual Capital, Tier 1 capital to risk-weighted assets 556,820 550,839
Actual Capital, Common equity Tier 1 capital to risk-weighted assets 536,781 531,177
Actual Capital, Tier 1 capital to average assets $ 556,820 $ 550,839
Actual Capital Ratio, Total capital to risk-weighted assets 15.11% 14.54%
Actual Capital Ratio, Tier 1 capital to risk-weighted assets 11.78% 11.74%
Actual Capital Ratio, Common equity Tier 1 capital to risk-weighted assets 11.36% 11.32%
Actual Capital Ratio, Tier 1 capital to average assets 10.15% 10.18%
Minimum Regulatory Requirement Capital, Total capital to risk-weighted assets $ 378,059 $ 375,449
Minimum Regulatory Requirement Capital, Tier 1 capital to risk-weighted assets 283,544 281,587
Minimum Regulatory Requirement Capital, Common equity Tier 1 capital to risk-weighted assets 212,658 211,190
Minimum Regulatory Requirement Capital, Tier 1 capital to average assets $ 219,367 $ 216,526
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 6.00% 6.00%
Minimum Regulatory Requirement Ratio for Common equity Tier 1 capital to risk-weighted assets 4.50% 4.50%
Minimum Regulatory Requirement Ratio for Tier 1 capital to average assets 4.00% 4.00%
Hanmi Bank    
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Actual Capital, Total capital to risk-weighted assets $ 691,024 $ 664,195
Actual Capital, Tier 1 capital to risk-weighted assets 631,978 630,782
Actual Capital, Common equity Tier 1 capital to risk-weighted assets 631,978 630,782
Actual Capital, Tier 1 capital to average assets $ 631,978 $ 630,782
Actual Capital Ratio, Total capital to risk-weighted assets 14.64% 14.19%
Actual Capital Ratio, Tier 1 capital to risk-weighted assets 13.39% 13.47%
Actual Capital Ratio, Common equity Tier 1 capital to risk-weighted assets 13.39% 13.47%
Actual Capital Ratio, Tier 1 capital to average assets 11.56% 11.67%
Minimum Regulatory Requirement Capital, Total capital to risk-weighted assets $ 377,516 $ 374,538
Minimum Regulatory Requirement Capital, Tier 1 capital to risk-weighted assets 283,137 280,904
Minimum Regulatory Requirement Capital, Common equity Tier 1 capital to risk-weighted assets 212,353 210,678
Minimum Regulatory Requirement Capital, Tier 1 capital to average assets $ 218,748 $ 216,265
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 6.00% 6.00%
Minimum Regulatory Requirement Ratio for Common equity Tier 1 capital to risk-weighted assets 4.50% 4.50%
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 $ 471,895 $ 468,173
Minimum to Be Categorized as Well Capitalized Capital, Tier 1 capital to risk-weighted assets 377,516 374,538
Minimum to Be Categorized as Well Capitalized Capital, Common equity Tier 1 capital to risk-weighted average 306,732 304,312
Minimum to Be Categorized as Well Capitalized Capital, Tier 1 capital to average assets $ 273,435 $ 270,331
Minimum to Be Categorized as Well Capitalized Ratio, Total capital to risk-weighted assets 10.00% 10.00%
Minimum to Be Categorized as Well Capitalized Ratio, Tier 1 capital to risk-weighted assets 8.00% 8.00%
Minimum to Be Categorized as Well Capitalized Ratio, Common equity Tier 1 capital to risk-weighted assets 6.50% 6.50%
Minimum to Be Categorized as Well Capitalized Ratio, Tier 1 capital to average assets 5.00% 5.00%