Quarterly report pursuant to Section 13 or 15(d)

Regulatory Matters - Capital Ratios of Hanmi Financial and Bank (Detail)

v3.8.0.1
Regulatory Matters - Capital Ratios of Hanmi Financial and Bank (Detail) - USD ($)
$ in Thousands
Mar. 31, 2018
Dec. 31, 2017
Hanmi Financial [Member]    
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Capital conservation buffer (percent) 6.52% 6.55%
Actual Capital, Total capital to risk-weighted assets $ 695,483 $ 684,272
Actual Capital, Tier 1 capital to risk-weighted assets 564,376 553,970
Actual Capital, Common equity Tier 1 capital to risk-weighted assets 544,983 537,950
Actual Capital, Tier 1 capital to average assets $ 564,376 $ 553,970
Actual Capital Ratio, Total capital to risk-weighted assets 15.43% 15.50%
Actual Capital Ratio, Tier 1 capital to risk-weighted assets 12.52% 12.55%
Actual Capital Ratio, Common equity Tier 1 capital to risk-weighted assets 12.09% 12.19%
Actual Capital Ratio, Tier 1 capital to average assets 10.88% 10.79%
Minimum Regulatory Requirement Capital, Total capital to risk-weighted assets $ 360,582 $ 353,171
Minimum Regulatory Requirement Capital, Tier 1 capital to risk-weighted assets 270,436 264,878
Minimum Regulatory Requirement Capital, Common equity Tier 1 capital to risk-weighted assets 202,827 198,658
Minimum Regulatory Requirement Capital, Tier 1 capital to average assets $ 207,452 $ 205,344
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) 7.13% 7.20%
Actual Capital, Total capital to risk-weighted assets $ 681,539 $ 670,896
Actual Capital, Tier 1 capital to risk-weighted assets 648,439 638,557
Actual Capital, Common equity Tier 1 capital to risk-weighted assets 648,439 638,557
Actual Capital, Tier 1 capital to average assets $ 648,439 $ 638,557
Actual Capital Ratio, Total capital to risk-weighted assets 15.13% 15.20%
Actual Capital Ratio, Tier 1 capital to risk-weighted assets 14.39% 14.47%
Actual Capital Ratio, Common equity Tier 1 capital to risk-weighted assets 14.39% 14.47%
Actual Capital Ratio, Tier 1 capital to average assets 12.51% 12.44%
Minimum Regulatory Requirement Capital, Total capital to risk-weighted assets $ 360,395 $ 353,091
Minimum Regulatory Requirement Capital, Tier 1 capital to risk-weighted assets 270,296 264,818
Minimum Regulatory Requirement Capital, Common equity Tier 1 capital to risk-weighted assets 202,722 198,614
Minimum Regulatory Requirement Capital, Tier 1 capital to average assets $ 207,361 $ 205,385
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 $ 450,494 $ 441,364
Minimum to Be Categorized as Well Capitalized Capital, Tier 1 capital to risk-weighted assets 360,395 353,091
Minimum to Be Categorized as Well Capitalized Capital, Common equity Tier 1 capital to risk-weighted assets 292,821 286,886
Minimum to Be Categorized as Well Capitalized Capital, Tier 1 capital to average assets $ 259,201 $ 256,731
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%