XML 104 R83.htm IDEA: XBRL DOCUMENT
v3.25.0.1

EMPLOYEE BENEFIT PLANS - Allocation of Plan Assets (Details) - Pension Plans - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | --- | ---
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | $ 8,971 | $ 9,349 | $ 9,044
Recurring |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 8,971 | 9,349 |
Recurring | Large-cap |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 839 | 680 |
Recurring | Mid-cap |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 221 | 195 |
Recurring | Small-cap |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 213 | 199 |
Recurring | International |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 396 | 391 |
Recurring | Long duration |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 6,093 | 6,698 |
Recurring | Common stock |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 691 | 663 |
Recurring | Common/collective trusts - large-cap |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 200 | 180 |
Recurring | Cash equivalents - money market |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 318 | 343 |
Level 1 | Recurring |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 8,771 | 9,169 |
Level 1 | Recurring | Large-cap |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 839 | 680 |
Level 1 | Recurring | Mid-cap |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 221 | 195 |
Level 1 | Recurring | Small-cap |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 213 | 199 |
Level 1 | Recurring | International |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 396 | 391 |
Level 1 | Recurring | Long duration |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 6,093 | 6,698 |
Level 1 | Recurring | Common stock |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 691 | 663 |
Level 1 | Recurring | Cash equivalents - money market |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 318 | 343 |
Level 2 | Recurring |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 200 | 180 |
Level 2 | Recurring | Common/collective trusts - large-cap |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | $ 200 | $ 180 |

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_DefinedBenefitPlanDisclosureLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 17 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480482/715-20-55-17 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(02) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(ii) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(01) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 6: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(ii) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 7: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(01) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
Name: | us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=us-gaap_PensionPlansDefinedBenefitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=bhb_LargeCapitalizationMutualFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=bhb_MiddleCapitalizationMutualFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=bhb_SmallCapitalizationMutualFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=bhb_InternationalMutualFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=bhb_FixedIncomeSecuritiesLongDurationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_EquitySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=bhb_CommonCollectiveTrustsLargeCapitalizationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_MoneyMarketFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |