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Regulatory Matters - Capital Ratios of Hanmi Financial and Bank (Detail) $ in Thousands | Mar. 31, 2023 USD ($) | Dec. 31, 2022 USD ($)
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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 | $ 917,551 | $ 901,239
Actual Capital, Tier 1 capital to risk-weighted assets | 740,064 | 728,344
Actual Capital, Common equity Tier 1 capital to risk-weighted assets | 718,717 | 707,101
Actual Capital, Tier 1 capital to average assets | $ 740,064 | $ 728,344
Actual Capital Ratio, Total capital to risk-weighted assets | 0.1480 | 0.1449
Actual Capital Ratio, Tier 1 capital to risk-weighted assets | 0.1194 | 0.1171
Actual Capital Ratio, Common equity Tier 1 capital to risk-weighted assets | 0.1159 | 0.1137
Actual Capital Ratio, Tier 1 capital to average assets | 0.1009 | 0.1007
Minimum Regulatory Requirement Capital, Total capital to risk-weighted assets | $ 495,951 | $ 497,508
Minimum Regulatory Requirement Capital, Tier 1 capital to risk-weighted assets | 371,963 | 373,131
Minimum Regulatory Requirement Capital, Common equity Tier 1 capital to risk-weighted assets | 278,973 | 279,848
Minimum Regulatory Requirement Capital, Tier 1 capital to average assets | $ 293,509 | $ 289,311
Minimum Regulatory Requirement Ratio for Total capital to risk-weighted assets | 0.0800 | 0.0800
Minimum Regulatory Requirement Ratio for Tier 1 capital to risk-weighted assets | 0.0600 | 0.0600
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 | 0.0400 | 0.0400
Hanmi Bank |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
Actual Capital, Total capital to risk-weighted assets | $ 876,961 | $ 860,503
Actual Capital, Tier 1 capital to risk-weighted assets | 809,474 | 797,608
Actual Capital, Common equity Tier 1 capital to risk-weighted assets | 809,474 | 797,608
Actual Capital, Tier 1 capital to average assets | $ 809,474 | $ 797,608
Actual Capital Ratio, Total capital to risk-weighted assets | 0.1415 | 0.1386
Actual Capital Ratio, Tier 1 capital to risk-weighted assets | 0.1306 | 0.1285
Actual Capital Ratio, Common equity Tier 1 capital to risk-weighted assets | 0.1306 | 0.1285
Actual Capital Ratio, Tier 1 capital to average assets | 0.1106 | 0.1107
Minimum Regulatory Requirement Capital, Total capital to risk-weighted assets | $ 495,874 | $ 496,607
Minimum Regulatory Requirement Capital, Tier 1 capital to risk-weighted assets | 371,905 | 372,455
Minimum Regulatory Requirement Capital, Common equity Tier 1 capital to risk-weighted assets | 278,929 | 279,341
Minimum Regulatory Requirement Capital, Tier 1 capital to average assets | $ 292,658 | $ 288,110
Minimum Regulatory Requirement Ratio for Total capital to risk-weighted assets | 0.0800 | 0.0800
Minimum Regulatory Requirement Ratio for Tier 1 capital to risk-weighted assets | 0.0600 | 0.0600
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 | 0.0400 | 0.0400
Minimum to Be Categorized as Well Capitalized Capital, Total capital to risk-weighted assets | $ 619,842 | $ 620,758
Minimum to Be Categorized as Well Capitalized Capital, Tier 1 capital to risk-weighted assets | 495,874 | 496,607
Minimum to Be Categorized as Well Capitalized Capital, Common equity Tier 1 capital to risk-weighted average | 402,897 | 403,493
Minimum to Be Categorized as Well Capitalized Capital, Tier 1 capital to average assets | $ 365,822 | $ 360,137
Minimum to Be Categorized as Well Capitalized Ratio, Total capital to risk-weighted assets | 0.1000 | 0.1000
Minimum to Be Categorized as Well Capitalized Ratio, Tier 1 capital to risk-weighted assets | 0.0800 | 0.0800
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 | 0.0500 | 0.0500

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