XML 87 R74.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Loans and Leases and the Allowance for Credit Losses - Schedule of Aging Analysis by Class of Loan and Lease Portfolio (Parenthetical) (Details) | 12 Months Ended
--- | ---
Dec. 31, 2021
Loans And Leases And Allowance For Loan And Lease Losses [Abstract] |
Number of days non-accrual loans and leases are not past due | 30 days

X
- Definition Represents the number of days that the nonaccrual loans that are not past due. + References No definition available. + Details
Name: | boh_FinancingReceivableRecordedInvestmentNonaccrualStatusCurrentNumberOfDaysNotPastDue
Namespace Prefix: | boh_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Loans and Leases and Allowance for Loan and Lease Losses. + References No definition available. + Details
Name: | boh_LoansAndLeasesAndAllowanceForLoanAndLeaseLossesAbstract
Namespace Prefix: | boh_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration