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Regulatory Capital Requirements (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
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Regulatory capital requirements |  |
Limit on allowable reserve for credit losses for total risk-based capital ratio as a percentage of risk-weighted assets | 1.25% | 1.25%
Common equity tier 1 capital to risk-weighted assets |  |
Amount | $ 1,912,767 | $ 1,783,113
Ratio (as a percent) | 0.1182 | 0.1224
Minimum Capital Ratio (as a percent) | 0.0450 | 0.0450
Well-Capitalized Ratio (as a percent) | 0.0650 | 0.0650
Tier 1 capital to risk-weighted assets |  |
Amount | $ 1,912,767 | $ 1,783,113
Ratio (as a percent) | 0.1182 | 0.1224
Minimum Capital Ratio (as a percent) | 0.0600 | 0.0600
Well-Capitalized Ratio (percent) | 0.0800 | 0.0800
Total capital to risk-weighted assets |  |
Amount | $ 2,090,502 | $ 1,965,280
Ratio (as a percent) | 0.1292 | 0.1349
Minimum Capital Ratio (as a percent) | 0.0800 | 0.0800
Well-Capitalized Ratio (as a percent) | 0.1000 | 0.1000
Tier 1 capital to average assets (leverage ratio) |  |
Amount | $ 1,912,767 | $ 1,783,113
Ratio | 0.0811 | 0.0724
Minimum Capital Ratio (as a percent) | 0.0400 | 0.0400
Well-Capitalized Ratio (percent) | 0.0500 | 0.0500
First Hawaiian Bank (FHB) |  |
Common equity tier 1 capital to risk-weighted assets |  |
Amount | $ 1,895,693 | $ 1,769,214
Ratio (as a percent) | 0.1171 | 0.1214
Tier 1 capital to risk-weighted assets |  |
Amount | $ 1,895,693 | $ 1,769,214
Ratio (as a percent) | 0.1171 | 0.1214
Total capital to risk-weighted assets |  |
Amount | $ 2,073,428 | $ 1,951,377
Ratio (as a percent) | 0.1281 | 0.1340
Tier 1 capital to average assets (leverage ratio) |  |
Amount | $ 1,895,693 | $ 1,769,214
Ratio | 0.0804 | 0.0718

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- Definition Ratio of minimum Common Equity Tier 1 risk-based capital to risk-weighted assets required for capital adequacy as defined by regulatory framework. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1B -URI https://asc.fasb.org/extlink&oid=117337116&loc=SL5958570-112826 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI https://asc.fasb.org/extlink&oid=117337116&loc=SL5958568-112826 + Details
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- Definition Amount of total capital as defined by regulatory framework. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI https://asc.fasb.org/extlink&oid=117337116&loc=SL5958568-112826 + Details
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