XML 149 R139.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Fair Value of Assets and Liabilities - Summary of the Significant Unobservable Inputs (Details) - Significant Other Unobservable Inputs (Level 3) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($)
Discounted Cash Flow Technique | Interest Rate Swap Agreements |  |
Level3 Assets And Liabilities Fair Value And Fair Value Unobservable Inputs [Line Items] |  |
Interest Rate Derivative Instruments Not Designated as Hedging Instruments at Fair Value, Net |  | $ (122,129)
Discounted Cash Flow Technique | Mortgage Servicing Rights |  |
Level3 Assets And Liabilities Fair Value And Fair Value Unobservable Inputs [Line Items] |  |
Mortgage Servicing Rights, at Fair Value | $ 26,851 | 28,040
Pricing Model | Interest Rate Lock Commitments |  |
Level3 Assets And Liabilities Fair Value And Fair Value Unobservable Inputs [Line Items] |  |
Interest Rate Derivative Instruments Not Designated as Hedging Instruments at Fair Value, Net | $ 148 | $ 58
Weighted Average Constant Prepayment Rate (as a percent) | Discounted Cash Flow Technique | Mortgage Servicing Rights |  |
Level3 Assets And Liabilities Fair Value And Fair Value Unobservable Inputs [Line Items] |  |
Mortgage Servicing Rights, Fair Value Inputs | 0.0406 | 0.0402
Measurement Input, Discount Rate | Discounted Cash Flow Technique |  |
Level3 Assets And Liabilities Fair Value And Fair Value Unobservable Inputs [Line Items] |  |
Mortgage Servicing Rights, Fair Value Inputs | 0.0948 | 0.0993
Weighted Average Closing Ratio (as a percent) | Pricing Model | Interest Rate Lock Commitments |  |
Level3 Assets And Liabilities Fair Value And Fair Value Unobservable Inputs [Line Items] |  |
Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Fair Value Inputs | 0.8553 | 0.9286
Weighted Average Credit Factor (as a percent) | Discounted Cash Flow Technique | Interest Rate Swap Agreements |  |
Level3 Assets And Liabilities Fair Value And Fair Value Unobservable Inputs [Line Items] |  |
Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Fair Value Inputs |  | 0.0001
Maximum | Discounted Cash Flow Technique | Mortgage Servicing Rights |  |
Level3 Assets And Liabilities Fair Value And Fair Value Unobservable Inputs [Line Items] |  |
Fair Value Assumption, Date of Securitization or Asset-backed Financing Arrangement, Transferor's Continuing Involvement, Servicing Assets or Liabilities, Discount Rate | 21.18% | 10.63%
Maximum | Measurement Input, Discount Rate | Discounted Cash Flow Technique |  |
Level3 Assets And Liabilities Fair Value And Fair Value Unobservable Inputs [Line Items] |  |
Mortgage Servicing Rights, Fair Value Inputs | 0.1079 | 0.1040
Maximum | Weighted Average Closing Ratio (as a percent) | Pricing Model | Interest Rate Lock Commitments |  |
Level3 Assets And Liabilities Fair Value And Fair Value Unobservable Inputs [Line Items] |  |
Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Fair Value Inputs | 0.9900 | 0.9900
Maximum | Weighted Average Credit Factor (as a percent) | Discounted Cash Flow Technique | Interest Rate Swap Agreements |  |
Level3 Assets And Liabilities Fair Value And Fair Value Unobservable Inputs [Line Items] |  |
Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Fair Value Inputs |  | 0.0049
Minimum | Discounted Cash Flow Technique | Mortgage Servicing Rights |  |
Level3 Assets And Liabilities Fair Value And Fair Value Unobservable Inputs [Line Items] |  |
Fair Value Assumption, Date of Securitization or Asset-backed Financing Arrangement, Transferor's Continuing Involvement, Servicing Assets or Liabilities, Discount Rate | 2.98% | 2.81%
Minimum | Measurement Input, Discount Rate | Discounted Cash Flow Technique |  |
Level3 Assets And Liabilities Fair Value And Fair Value Unobservable Inputs [Line Items] |  |
Mortgage Servicing Rights, Fair Value Inputs | 0.0765 | 0.087
Minimum | Weighted Average Closing Ratio (as a percent) | Pricing Model | Interest Rate Lock Commitments |  |
Level3 Assets And Liabilities Fair Value And Fair Value Unobservable Inputs [Line Items] |  |
Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Fair Value Inputs | 0.8350 | 0.8410
Minimum | Weighted Average Credit Factor (as a percent) | Discounted Cash Flow Technique | Interest Rate Swap Agreements |  |
Level3 Assets And Liabilities Fair Value And Fair Value Unobservable Inputs [Line Items] |  |
Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Fair Value Inputs |  | 0.0000

X
- Definition Level 3 Assets and Liabilities, Fair Value and Fair Value Unobservable Inputs [Line Items] + References No definition available. + Details
Name: | boh_Level3AssetsAndLiabilitiesFairValueAndFairValueUnobservableInputsLineItems
Namespace Prefix: | boh_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition This element represents the assets reported on a recurring or nonrecurring basis on the balance sheet at period end at fair value. + References No definition available. + Details
Name: | boh_MortgageServicingRightsFairValueDisclosure
Namespace Prefix: | boh_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Discount rate which is used to value residual cash flows generated by financial assets of the securitization, asset-backed financing arrangement, or similar transfer for initial fair value measurement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 860 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481326/860-20-50-3 + Details
Name: | us-gaap_AssumptionForFairValueOnSecuritizationDateOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesDiscountRate
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Value of input used to measure net derivative asset (liability). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
Name: | us-gaap_DerivativeAssetLiabilityNetMeasurementInput
Namespace Prefix: | us-gaap_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Fair value as of the balance sheet date of all derivatives not designated as hedging instruments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 5 -SubTopic 10 -Topic 815 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480463/815-10-45-5 + Details
Name: | us-gaap_InterestRateDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAtFairValueNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Value of input used to measure servicing asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
Name: | us-gaap_ServicingAssetMeasurementInput
Namespace Prefix: | us-gaap_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ValuationTechniqueAxis=boh_DiscountedCashFlowTechniqueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateSwapMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=boh_MortgageServicingRightsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ValuationTechniqueAxis=boh_PricingModelTechniqueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateLockCommitmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputConstantPrepaymentRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputDiscountRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=boh_Boh_MeasurementInputClosingRatioMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputEntityCreditRiskMember
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: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |