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)
$ in Thousands
Sep. 30, 2020
USD ($)
Dec. 31, 2019
USD ($)
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Minimum Regulatory Requirement Ratio for Total capital to risk-weighted assets 8.0  
Minimum Regulatory Requirement Ratio for Tier 1 capital to risk-weighted assets 6.0  
Minimum Regulatory Requirement Ratio for Tier 1 capital to average assets 4.0  
Minimum to Be Categorized as Well Capitalized Ratio, Total capital to risk-weighted assets 10.0  
Minimum to Be Categorized as Well Capitalized Ratio, Tier 1 capital to risk-weighted assets 8.0  
Hanmi Financial    
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Actual Capital, Total capital to risk-weighted assets $ 728,350 $ 714,288
Actual Capital, Tier 1 capital to risk-weighted assets 569,390 556,820
Actual Capital, Common equity Tier 1 capital to risk-weighted assets 549,060 536,781
Actual Capital, Tier 1 capital to average assets $ 569,390 $ 556,820
Actual Capital Ratio, Total capital to risk-weighted assets 15.16 15.11
Actual Capital Ratio, Tier 1 capital to risk-weighted assets 11.85 11.78
Actual Capital Ratio, Common equity Tier 1 capital to risk-weighted assets 11.43 11.36
Actual Capital Ratio, Tier 1 capital to average assets 9.53 10.15
Minimum Regulatory Requirement Capital, Total capital to risk-weighted assets $ 384,456 $ 378,059
Minimum Regulatory Requirement Capital, Tier 1 capital to risk-weighted assets 288,342 283,544
Minimum Regulatory Requirement Capital, Common equity Tier 1 capital to risk-weighted assets 216,257 212,658
Minimum Regulatory Requirement Capital, Tier 1 capital to average assets $ 238,916 $ 219,367
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 $ 709,528 $ 691,024
Actual Capital, Tier 1 capital to risk-weighted assets 649,086 631,978
Actual Capital, Common equity Tier 1 capital to risk-weighted assets 649,086 631,978
Actual Capital, Tier 1 capital to average assets $ 649,086 $ 631,978
Actual Capital Ratio, Total capital to risk-weighted assets 14.77 14.64
Actual Capital Ratio, Tier 1 capital to risk-weighted assets 13.51 13.39
Actual Capital Ratio, Common equity Tier 1 capital to risk-weighted assets 13.51 13.39
Actual Capital Ratio, Tier 1 capital to average assets 10.88 11.56
Minimum Regulatory Requirement Capital, Total capital to risk-weighted assets $ 384,279 $ 377,516
Minimum Regulatory Requirement Capital, Tier 1 capital to risk-weighted assets 288,209 283,137
Minimum Regulatory Requirement Capital, Common equity Tier 1 capital to risk-weighted assets 216,157 212,353
Minimum Regulatory Requirement Capital, Tier 1 capital to average assets $ 238,601 $ 218,748
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 $ 480,349 $ 471,895
Minimum to Be Categorized as Well Capitalized Capital, Tier 1 capital to risk-weighted assets 384,279 377,516
Minimum to Be Categorized as Well Capitalized Capital, Common equity Tier 1 capital to risk-weighted average 312,227 306,732
Minimum to Be Categorized as Well Capitalized Capital, Tier 1 capital to average assets $ 298,252 $ 273,435
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