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Regulatory Matters - Capital Ratios of Hanmi Financial and Bank (Detail) - USD ($) $ in Thousands | Jun. 30, 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) | 6.58% | 5.86%
Actual Capital, Total capital to risk-weighted assets | $ 669,476 | $ 554,089
Actual Capital, Tier 1 capital to risk-weighted assets | 536,708 | 520,477
Actual Capital, Common equity Tier 1 capital to risk-weighted assets | 521,442 | 509,239
Actual Capital, Tier 1 capital to average assets | $ 536,708 | $ 520,477
Actual Capital Ratio, Total capital to risk-weighted assets | 15.69% | 13.86%
Actual Capital Ratio, Tier 1 capital to risk-weighted assets | 12.58% | 13.02%
Actual Capital Ratio, Common equity Tier 1 capital to risk-weighted assets | 12.22% | 12.73%
Actual Capital Ratio, Tier 1 capital to average assets | 11.08% | 11.53%
Minimum Regulatory Requirement Capital, Total capital to risk-weighted assets | $ 341,429 | $ 319,901
Minimum Regulatory Requirement Capital, Tier 1 capital to risk-weighted assets | 256,072 | 239,926
Minimum Regulatory Requirement Capital, Common equity Tier 1 capital to risk-weighted assets | 192,054 | 179,944
Minimum Regulatory Requirement Capital, Tier 1 capital to average assets | $ 193,732 | $ 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) | 7.44% | 5.64%
Actual Capital, Total capital to risk-weighted assets | $ 659,526 | $ 544,759
Actual Capital, Tier 1 capital to risk-weighted assets | 624,633 | 511,146
Actual Capital, Common equity Tier 1 capital to risk-weighted assets | 624,633 | 511,146
Actual Capital, Tier 1 capital to average assets | $ 624,633 | $ 511,146
Actual Capital Ratio, Total capital to risk-weighted assets | 15.44% | 13.64%
Actual Capital Ratio, Tier 1 capital to risk-weighted assets | 14.62% | 12.80%
Actual Capital Ratio, Common equity Tier 1 capital to risk-weighted assets | 14.62% | 12.80%
Actual Capital Ratio, Tier 1 capital to average assets | 12.89% | 11.33%
Minimum Regulatory Requirement Capital, Total capital to risk-weighted assets | $ 341,689 | $ 319,520
Minimum Regulatory Requirement Capital, Tier 1 capital to risk-weighted assets | 256,267 | 239,640
Minimum Regulatory Requirement Capital, Common equity Tier 1 capital to risk-weighted assets | 192,200 | 179,730
Minimum Regulatory Requirement Capital, Tier 1 capital to average assets | $ 193,822 | $ 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 | $ 427,111 | $ 399,399
Minimum to Be Categorized as Well Capitalized Capital, Tier 1 capital to risk-weighted assets | 341,689 | 319,520
Minimum to Be Categorized as Well Capitalized Capital, Common equity Tier 1 capital to risk-weighted assets | 277,622 | 259,610
Minimum to Be Categorized as Well Capitalized Capital, Tier 1 capital to average assets | $ 242,278 | $ 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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