Regulatory Matters - Capital Ratios of Hanmi Financial and Bank (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Minimum Regulatory Requirement Ratio for Total capital to risk-weighted assets	8.00%
Minimum Regulatory Requirement Ratio for Tier 1 capital to risk-weighted assets	4.00%
Minimum Regulatory Requirement Ratio for Tier 1 capital to average assets	4.00%
Minimum to Be Categorized as Well Capitalized Percentage, Total capital to risk-weighted assets	10.00%
Minimum to Be Categorized as Well Capitalized Percentage, Tier 1 capital to risk-weighted assets	6.00%
Hanmi Financial [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Actual Capital, Total capital to risk-weighted assets	$ 499,076	$ 493,598
Actual Capital, Tier 1 capital to risk-weighted assets	456,941	454,582
Actual Capital, Common equity Tier 1 capital to risk-weighted assets	456,941
Actual Capital, Tier 1 capital to average assets	$ 456,941	$ 454,582
Actual Capital Percentage, Total capital to risk-weighted assets	14.91%	15.89%
Actual Capital Percentage, Tier 1 capital to risk-weighted assets	13.65%	14.63%
Actual Capital Percentage, Common equity Tier 1 capital to risk-weighted assets	13.65%
Actual Capital Percentage, Tier 1 capital to average assets	11.31%	10.91%
Minimum Regulatory Requirement Capital, Total capital to risk-weighted assets	$ 267,760	$ 248,501
Minimum Regulatory Requirement Capital, Tier 1 capital to risk-weighted assets	200,820	124,250
Minimum Regulatory Requirement Capital, Common equity Tier 1 capital to risk-weighted assets	150,615
Minimum Regulatory Requirement Capital, Tier 1 capital to average assets	$ 161,620	$ 166,600
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%	4.00%
Minimum Regulatory Requirement Ratio for Common equity Tier 1 capital to risk-weighted assets	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]
Actual Capital, Total capital to risk-weighted assets	$ 496,710	$ 470,934
Actual Capital, Tier 1 capital to risk-weighted assets	454,634	431,971
Actual Capital, Common equity Tier 1 capital to risk-weighted assets	454,634
Actual Capital, Tier 1 capital to average assets	$ 454,634	$ 431,971
Actual Capital Percentage, Total capital to risk-weighted assets	14.86%	15.18%
Actual Capital Percentage, Tier 1 capital to risk-weighted assets	13.60%	13.93%
Actual Capital Percentage, Common equity Tier 1 capital to risk-weighted assets	13.60%
Actual Capital Percentage, Tier 1 capital to average assets	11.27%	10.39%
Minimum Regulatory Requirement Capital, Total capital to risk-weighted assets	$ 267,377	$ 248,157
Minimum Regulatory Requirement Capital, Tier 1 capital to risk-weighted assets	200,533	124,078
Minimum Regulatory Requirement Capital, Common equity Tier 1 capital to risk-weighted assets	150,400
Minimum Regulatory Requirement Capital, Tier 1 capital to average assets	$ 161,399	$ 166,332
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%	4.00%
Minimum Regulatory Requirement Ratio for Common equity Tier 1 capital to risk-weighted assets	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	$ 334,222	$ 310,196
Minimum to Be Categorized as Well Capitalized Capital, Tier 1 capital to risk-weighted assets	267,377	186,118
Minimum to Be Categorized as Well Capitalized Capital,. Common equity Tier 1 capital to risk-weighted average	217,244
Minimum to Be Categorized as Well Capitalized Capital, Tier 1 capital to average assets	$ 201,749	$ 207,915
Minimum to Be Categorized as Well Capitalized Percentage, Total capital to risk-weighted assets	10.00%	10.00%
Minimum to Be Categorized as Well Capitalized Percentage, Tier 1 capital to risk-weighted assets	8.00%	6.00%
Minimum to Be Categorized as Well Capitalized Percentage, Common equity Tier 1 capital to risk-weighted assets	6.50%
Minimum to Be Categorized as Well Capitalized Percentage, Tier 1 capital to average assets	5.00%	5.00%

Tier One Common Capital Required for Capital Adequacy to Risk Weighted Assets

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Tier One Common Capital Required to be Well Capitalized

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Tier One Common Capital to Risk Weighted Assets

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Tier One Common Equity

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The amount of total capital as defined in the regulations.

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The minimum Total risk based capital ratio (total capital divided by risk weighted assets) required for capital adequacy purposes under the regulatory framework for prompt corrective action.

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The amount of Total Capital required to be categorized as well as capitalized under the regulatory framework for prompt corrective action.

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Total Capital divided by risk weighted assets as defined in the regulations.

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Tier 1 Leverage Capital as defined in the regulations. Also called Core Capital.

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The minimum amount of Tier 1 Leverage Capital for capital adequacy purposes divided by average assets as defined in the regulations.

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Tier 1 Risk Based Capital as defined in the regulations.

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Tier 1 capital divided by risk weighted assets as defined by regulations.

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