XML 69 R48.htm IDEA: XBRL DOCUMENT
v3.25.0.1

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 USD ($) segment
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Allowance | $ 568
Period of performance for return to accrual status | 6 months
Enrollment term of employee stock purchase plan | 6 months
Number of segments | segment | 1
Minimum |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Net actuarial gain or loss amortized (percentage) | 10.00%
Premises | Minimum |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Estimated useful live of premises and equipment | 5 years
Premises | Maximum |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Estimated useful live of premises and equipment | 39 years
Furniture and equipment | Minimum |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Estimated useful live of premises and equipment | 3 years
Furniture and equipment | Maximum |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Estimated useful live of premises and equipment | 8 years
Accounting Standards Update 2016-13 |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Allowance | $ 0

X
- Definition Enrollment Term of Employee Stock Purchase Plan + References No definition available. + Details
Name: | bhb_EnrollmentTermOfEmployeeStockPurchasePlan
Namespace Prefix: | bhb_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Threshold period of performance of non-accruing financing receivable upon which it is considered for return to accrual status, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | bhb_FinancingReceivableThresholdPeriodOfPerformanceForReturnToAccrualStatus
Namespace Prefix: | bhb_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The threshold percent of gain (loss) from change in actuarial assumptions, for amortization in net periodic benefit cost. + References No definition available. + Details
Name: | bhb_ThresholdPercentOfDefinedBenefitPlanBenefitObligationActuarialGainLossForAmortization
Namespace Prefix: | bhb_
Data Type: | dtr-types:percentItemType
Balance Type: | na
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 Amount excluding accrued interest, of allowance for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479130/326-30-45-1 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 18 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-18 + Details
Name: | us-gaap_NumberOfReportableSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

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

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_LandAndBuildingMember
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_PropertyPlantAndEquipmentByTypeAxis=us-gaap_FurnitureAndFixturesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AdjustmentsForNewAccountingPronouncementsAxis=us-gaap_AccountingStandardsUpdate201613Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |