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Regulatory Capital Requirements (Tables) | 6 Months Ended
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Jun. 30, 2023
Regulatory Capital Requirements |
Schedule of regulatory capital ratios | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | First Hawaiian | ​ | Minimum | ​ | Well- | ​
​ | ​ | First Hawaiian, Inc. | ​ | Bank | ​ | Capital | ​ | Capitalized | ​
(dollars in thousands) |  | Amount |  | Ratio | ​ | Amount |  | Ratio | ​ | Ratio(1) |  | Ratio(1) | ​
June 30, 2023: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Common equity tier 1 capital to risk-weighted assets | ​ | $ | 1,976,982 | ​ | 12.05 | % | $ | 1,963,228 | ​ | 11.96 | % | 4.50 | % | 6.50 | %
Tier 1 capital to risk-weighted assets | ​ | ​ | 1,976,982 | ​ | 12.05 | % | ​ | 1,963,228 | ​ | 11.96 | % | 6.00 | % | 8.00 | %
Total capital to risk-weighted assets | ​ | ​ | 2,161,762 | ​ | 13.17 | % | ​ | 2,148,008 | ​ | 13.09 | % | 8.00 | % | 10.00 | %
Tier 1 capital to average assets (leverage ratio) | ​ | ​ | 1,976,982 | ​ | 8.30 | % | ​ | 1,963,228 | ​ | 8.24 | % | 4.00 | % | 5.00 | %
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
December 31, 2022: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Common equity tier 1 capital to risk-weighted assets | ​ | $ | 1,912,767 | ​ | 11.82 | % | $ | 1,895,693 | ​ | 11.71 | % | 4.50 | % | 6.50 | %
Tier 1 capital to risk-weighted assets | ​ | ​ | 1,912,767 | ​ | 11.82 | % | ​ | 1,895,693 | ​ | 11.71 | % | 6.00 | % | 8.00 | %
Total capital to risk-weighted assets | ​ | ​ | 2,090,502 | ​ | 12.92 | % | ​ | 2,073,428 | ​ | 12.81 | % | 8.00 | % | 10.00 | %
Tier 1 capital to average assets (leverage ratio) | ​ | ​ | 1,912,767 | ​ | 8.11 | % | ​ | 1,895,693 | ​ | 8.04 | % | 4.00 | % | 5.00 | %
(1) | As defined by the regulations issued by the Board of Governors of the Federal Reserve System, the Office of the Comptroller of the Currency, and Federal Deposit Insurance Corporation (“FDIC”).

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- Definition Tabular disclosure of the capital amounts and ratios as of the balance sheet date, indicating whether the entity or entities are in compliance with regulatory capital requirements, by entity. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480696/942-505-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Publisher FASB -URI https://asc.fasb.org//1943274/2147480696/942-505-50-1B + Details
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