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v3.23.3

Organization and Basis of Presentation (Details) | 9 Months Ended
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Sep. 30, 2023 item
Capitalization |
Loan modification, period of nonaccrual status | 6 months
Estimated credit loss model, forecast horizon | 1 year
Number of Portfolio Segments | 3
Commercial Lending |
Capitalization |
Number of distinct classes within portfolio segment | 4
Residential mortgage |
Capitalization |
Number of distinct classes within portfolio segment | 2
First Hawaiian, Inc. (FHI) |
Capitalization |
Outstanding common stock owned (as a percent) | 100.00%

X
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X
- Definition Represents the minimum period of time that modified loans remain on nonaccrual status. + References No definition available. + Details
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Namespace Prefix: | fhb_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of distinct classes of loans within particular portfolio segments. + References No definition available. + Details
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- Definition Represents the number of portfolio segments. + References No definition available. + Details
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Balance Type: | na
Period Type: | duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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X
- Details
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X
- Details
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Period Type: |