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Regulatory Matters - Capital Ratios of Hanmi Financial and Bank (Detail) $ in Thousands | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
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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 | $ 743,091 | $ 714,288
Actual Capital, Tier 1 capital to risk-weighted assets | 583,076 | 556,820
Actual Capital, Common equity Tier 1 capital to risk-weighted assets | 562,647 | 536,781
Actual Capital, Tier 1 capital to average assets | $ 583,076 | $ 556,820
Actual Capital Ratio, Total capital to risk-weighted assets | 15.21 | 15.11
Actual Capital Ratio, Tier 1 capital to risk-weighted assets | 11.93 | 11.78
Actual Capital Ratio, Common equity Tier 1 capital to risk-weighted assets | 11.52 | 11.36
Actual Capital Ratio, Tier 1 capital to average assets | 9.49 | 10.15
Minimum Regulatory Requirement Capital, Total capital to risk-weighted assets | $ 390,884 | $ 378,059
Minimum Regulatory Requirement Capital, Tier 1 capital to risk-weighted assets | 293,163 | 283,544
Minimum Regulatory Requirement Capital, Common equity Tier 1 capital to risk-weighted assets | 219,872 | 212,658
Minimum Regulatory Requirement Capital, Tier 1 capital to average assets | $ 245,882 | $ 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 | $ 726,532 | $ 691,024
Actual Capital, Tier 1 capital to risk-weighted assets | 665,058 | 631,978
Actual Capital, Common equity Tier 1 capital to risk-weighted assets | 665,058 | 631,978
Actual Capital, Tier 1 capital to average assets | $ 665,059 | $ 631,978
Actual Capital Ratio, Total capital to risk-weighted assets | 14.86 | 14.64
Actual Capital Ratio, Tier 1 capital to risk-weighted assets | 13.60 | 13.39
Actual Capital Ratio, Common equity Tier 1 capital to risk-weighted assets | 13.60 | 13.39
Actual Capital Ratio, Tier 1 capital to average assets | 10.83 | 11.56
Minimum Regulatory Requirement Capital, Total capital to risk-weighted assets | $ 391,114 | $ 377,516
Minimum Regulatory Requirement Capital, Tier 1 capital to risk-weighted assets | 293,336 | 283,137
Minimum Regulatory Requirement Capital, Common equity Tier 1 capital to risk-weighted assets | 220,002 | 212,353
Minimum Regulatory Requirement Capital, Tier 1 capital to average assets | $ 245,736 | $ 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 | $ 488,893 | $ 471,895
Minimum to Be Categorized as Well Capitalized Capital, Tier 1 capital to risk-weighted assets | 391,114 | 377,516
Minimum to Be Categorized as Well Capitalized Capital, Common equity Tier 1 capital to risk-weighted average | 317,780 | 306,732
Minimum to Be Categorized as Well Capitalized Capital, Tier 1 capital to average assets | $ 307,170 | $ 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

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