XML 55 R46.htm IDEA: XBRL DOCUMENT
v3.23.3

Loans and Leases and the Allowance for Credit Losses - Additional Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Dec. 31, 2022
Accounts Notes And Loans Receivable [Line Items] |  |  |  |  |
Net gains (loss) related to sales of residential mortgage loans |  |  | $ 300 | $ 200 |
Accrued interest receivable | $ 65,541 |  | 65,541 |  | $ 61,002
Revolving loans, converted to term loan during the period |  |  | $ 7,400 |  | 6,200
Number of days non-accrual loans are not past due |  |  | 30 days |  |
Consumer mortgage loans collateralized by residential real estate property that are in the process of foreclosure | 4,700 |  | $ 4,700 |  |
Pass | Residential Mortgage |  |  |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |  |  |
Number of days past due for loans and leases in classified credit quality indicator |  |  | 90 days |  |
Maximum current loan-to-value ratio for residential mortgage and home equity loans to be considered as pass (as a percent) |  |  | 60.00% |  |
Pass | Home Equity |  |  |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |  |  |
Number of days past due for loans and leases in classified credit quality indicator |  |  | 90 days |  |
Maximum current loan-to-value ratio for residential mortgage and home equity loans to be considered as pass (as a percent) |  |  | 60.00% |  |
Maximum current combined loan-to-value ratio for residential mortgage and home equity loans to be considered as pass (as a percent) |  |  | 60.00% |  |
Accrued Interest Receivable |  |  |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |  |  |
Accrued interest receivable | 45,000 |  | $ 45,000 |  | $ 40,100
Maximum |  |  |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |  |  |
Net gains (loss) related to sales of residential mortgage loans | $ 100 | $ 100 |  |  |
Consumer | Classified |  |  |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |  |  |
Number of days past due for loans and leases in classified credit quality indicator |  |  | 90 days |  |

X
- Definition Financing receivable credit quality current combined loan to value ratio percentage maximum. + References No definition available. + Details
Name: | boh_FinancingReceivableCreditQualityCurrentCombinedLoanToValueRatioPercentageMaximum
Namespace Prefix: | boh_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the maximum current loan-to-value ratio for residential mortgage and home equity loans to be considered as pass. + References No definition available. + Details
Name: | boh_FinancingReceivableCreditQualityCurrentLoanToValueRatioPercentageMaximum
Namespace Prefix: | boh_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Financing receivable past due for loans and leases to be classified as classified credit quality indicator period. + References No definition available. + Details
Name: | boh_FinancingReceivablePastDueForLoansAndLeasesToBeClassifiedAsClassifiedCreditQualityIndicatorPeriod
Namespace Prefix: | boh_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Financing receivable recorded investment nonaccrual status current not past due period. + References No definition available. + Details
Name: | boh_FinancingReceivableRecordedInvestmentNonaccrualStatusCurrentNotPastDuePeriod
Namespace Prefix: | boh_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Revolving Loans, Converted To Term Loan During the Period + References No definition available. + Details
Name: | boh_RevolvingLoansConvertedToTermLoanDuringthePeriod
Namespace Prefix: | boh_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- 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
Name: | us-gaap_AccountsNotesAndLoansReceivableLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The gains (losses) included in earnings that represent the difference between the sale price and the carrying value of loans made to finance real estate acquisitions. This element refers to the gain (loss) and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 45 -Paragraph 1 -SubTopic 310 -Topic 944 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479616/944-310-45-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 45 -Paragraph 2 -SubTopic 310 -Topic 944 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479616/944-310-45-2 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 310 -Topic 944 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479584/944-310-50-1 + Details
Name: | us-gaap_GainLossOnSaleOfMortgageLoans
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 946 -SubTopic 310 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480833/946-310-45-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(3)(a)(4)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_InterestReceivable
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Recorded investment of consumer mortgage loan receivables secured by residential real estate properties for which formal foreclosure proceedings are in process. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 35 -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-35 + Details
Name: | us-gaap_MortgageLoansInProcessOfForeclosureAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_PassMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ResidentialMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_HomeEquityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=boh_AccruedInterestReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_SubstandardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |