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Regulatory Matters - Capital Ratios of Hanmi Financial and Bank (Detail) - USD ($) $ in Thousands | Mar. 31, 2017 | Dec. 31, 2016
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Hanmi Financial [Member] |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
Capital conservation buffer (percent) | 6.93% | 5.86%
Actual Capital, Total capital to risk-weighted assets | $ 659,841 | $ 554,089
Actual Capital, Tier 1 capital to risk-weighted assets | 527,765 | 520,477
Actual Capital, Common equity Tier 1 capital to risk-weighted assets | 512,580 | 509,239
Actual Capital, Tier 1 capital to average assets | $ 527,765 | $ 520,477
Actual Capital Ratio, Total capital to risk-weighted assets | 16.16% | 13.86%
Actual Capital Ratio, Tier 1 capital to risk-weighted assets | 12.93% | 13.02%
Actual Capital Ratio, Common equity Tier 1 capital to risk-weighted assets | 12.56% | 12.73%
Actual Capital Ratio, Tier 1 capital to average assets | 11.21% | 11.53%
Minimum Regulatory Requirement Capital, Total capital to risk-weighted assets | $ 326,587 | $ 319,901
Minimum Regulatory Requirement Capital, Tier 1 capital to risk-weighted assets | 244,941 | 239,926
Minimum Regulatory Requirement Capital, Common equity Tier 1 capital to risk-weighted assets | 183,705 | 179,944
Minimum Regulatory Requirement Capital, Tier 1 capital to average assets | $ 188,244 | $ 180,581
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 [Member] |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
Capital conservation buffer (percent) | 7.91% | 5.64%
Actual Capital, Total capital to risk-weighted assets | $ 649,785 | $ 544,759
Actual Capital, Tier 1 capital to risk-weighted assets | 615,449 | 511,146
Actual Capital, Common equity Tier 1 capital to risk-weighted assets | 615,449 | 511,146
Actual Capital, Tier 1 capital to average assets | $ 615,449 | $ 511,146
Actual Capital Ratio, Total capital to risk-weighted assets | 15.91% | 13.64%
Actual Capital Ratio, Tier 1 capital to risk-weighted assets | 15.07% | 12.80%
Actual Capital Ratio, Common equity Tier 1 capital to risk-weighted assets | 15.07% | 12.80%
Actual Capital Ratio, Tier 1 capital to average assets | 13.08% | 11.33%
Minimum Regulatory Requirement Capital, Total capital to risk-weighted assets | $ 326,769 | $ 319,520
Minimum Regulatory Requirement Capital, Tier 1 capital to risk-weighted assets | 245,077 | 239,640
Minimum Regulatory Requirement Capital, Common equity Tier 1 capital to risk-weighted assets | 183,808 | 179,730
Minimum Regulatory Requirement Capital, Tier 1 capital to average assets | $ 188,171 | $ 180,411
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 | $ 408,462 | $ 399,399
Minimum to Be Categorized as Well Capitalized Capital, Tier 1 capital to risk-weighted assets | 326,769 | 319,520
Minimum to Be Categorized as Well Capitalized Capital, Common equity Tier 1 capital to risk-weighted assets | 265,500 | 259,610
Minimum to Be Categorized as Well Capitalized Capital, Tier 1 capital to average assets | $ 235,214 | $ 225,514
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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- Definition The minimum Tier One Capital Ratio (Tier one capital divided by risk-weighted assets) required for capital adequacy purposes under the regulatory framework for prompt corrective action. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958568-112826 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958570-112826 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1H -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=35709795&loc=d3e65071-112826 + Details
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