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Regulatory Matters - Capital Ratios of Hanmi Financial and Bank (Detail) $ in Thousands | Mar. 31, 2024 USD ($) | Dec. 31, 2023 USD ($)
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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 | 0.080 |
Minimum Regulatory Requirement Ratio for Tier 1 capital to risk-weighted assets | 0.060 |
Minimum Regulatory Requirement Ratio for Tier 1 capital to average assets | 0.040 |
Minimum to Be Categorized as Well Capitalized Ratio, Total capital to risk-weighted assets | 0.100 |
Minimum to Be Categorized as Well Capitalized Ratio, Tier 1 capital to risk-weighted assets | 0.080 |
Hanmi Financial |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
Actual Capital, Total capital to risk-weighted assets | $ 958,173 | $ 947,286
Actual Capital, Tier 1 capital to risk-weighted assets | 781,521 | 773,179
Actual Capital, Common equity Tier 1 capital to risk-weighted assets | 759,752 | 751,516
Actual Capital, Tier 1 capital to average assets | $ 781,521 | $ 773,179
Actual Capital Ratio, Total capital to risk-weighted assets | 0.152 | 0.1495
Actual Capital Ratio, Tier 1 capital to risk-weighted assets | 0.124 | 0.122
Actual Capital Ratio, Common equity Tier 1 capital to risk-weighted assets | 0.1205 | 0.1186
Actual Capital Ratio, Tier 1 capital to average assets | 0.1036 | 0.1037
Minimum Regulatory Requirement Capital, Total capital to risk-weighted assets | $ 504,319 | $ 506,891
Minimum Regulatory Requirement Capital, Tier 1 capital to risk-weighted assets | 378,239 | 380,168
Minimum Regulatory Requirement Capital, Common equity Tier 1 capital to risk-weighted assets | 283,680 | 285,126
Minimum Regulatory Requirement Capital, Tier 1 capital to average assets | $ 301,758 | $ 298,277
Minimum Regulatory Requirement Ratio for Total capital to risk-weighted assets | 0.08 | 0.08
Minimum Regulatory Requirement Ratio for Tier 1 capital to risk-weighted assets | 0.06 | 0.06
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 | 0.04 | 0.04
Hanmi Bank |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
Actual Capital, Total capital to risk-weighted assets | $ 914,061 | $ 904,153
Actual Capital, Tier 1 capital to risk-weighted assets | 847,409 | 840,046
Actual Capital, Common equity Tier 1 capital to risk-weighted assets | 847,409 | 840,046
Actual Capital, Tier 1 capital to average assets | $ 847,409 | $ 840,046
Actual Capital Ratio, Total capital to risk-weighted assets | 0.145 | 0.1427
Actual Capital Ratio, Tier 1 capital to risk-weighted assets | 0.1344 | 0.1326
Actual Capital Ratio, Common equity Tier 1 capital to risk-weighted assets | 0.1344 | 0.1326
Actual Capital Ratio, Tier 1 capital to average assets | 0.1129 | 0.1132
Minimum Regulatory Requirement Capital, Total capital to risk-weighted assets | $ 504,340 | $ 506,741
Minimum Regulatory Requirement Capital, Tier 1 capital to risk-weighted assets | 378,255 | 380,056
Minimum Regulatory Requirement Capital, Common equity Tier 1 capital to risk-weighted assets | 283,691 | 285,042
Minimum Regulatory Requirement Capital, Tier 1 capital to average assets | $ 300,334 | $ 296,948
Minimum Regulatory Requirement Ratio for Total capital to risk-weighted assets | 0.08 | 0.08
Minimum Regulatory Requirement Ratio for Tier 1 capital to risk-weighted assets | 0.06 | 0.06
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 | 0.04 | 0.04
Minimum to Be Categorized as Well Capitalized Capital, Total capital to risk-weighted assets | $ 630,425 | $ 633,426
Minimum to Be Categorized as Well Capitalized Capital, Tier 1 capital to risk-weighted assets | 504,340 | 506,741
Minimum to Be Categorized as Well Capitalized Capital, Common equity Tier 1 capital to risk-weighted average | 409,776 | 411,727
Minimum to Be Categorized as Well Capitalized Capital, Tier 1 capital to average assets | $ 375,417 | $ 371,185
Minimum to Be Categorized as Well Capitalized Ratio, Total capital to risk-weighted assets | 0.10 | 0.10
Minimum to Be Categorized as Well Capitalized Ratio, Tier 1 capital to risk-weighted assets | 0.08 | 0.08
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 | 0.05 | 0.05

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