XML 69 R63.htm IDEA: XBRL DOCUMENT
v3.24.1.u1

Fair Value - Summary of Quantitative Information about Level 3 Fair Value Measurements of Assets Measured on a Nonrecurring Basis (Detail) - Fair Value, Nonrecurring [Member] - Selling Costs [Member] - Appraised Value Technique Member] - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2024 | Dec. 31, 2023
Disclosure Of Other Real Estate Owned Measured On Nonrecurring Vasis Valuation Techniques [Line Items] |  |
Collateral dependent loans | $ 45,423 | $ 56,068
Valuation Technique | Discounted appraised value technique | Discounted appraised value technique
Unobservable Input | Selling Costs | Selling Costs
Maximum [Member] |  |
Disclosure Of Other Real Estate Owned Measured On Nonrecurring Vasis Valuation Techniques [Line Items] |  |
Range | 15.00% | 15.00%
Minimum [Member] |  |
Disclosure Of Other Real Estate Owned Measured On Nonrecurring Vasis Valuation Techniques [Line Items] |  |
Range | 7.00% | 7.00%

X
- Definition Collateral dependent loans net fair value disclosure. + References No definition available. + Details
Name: | brbs_CollateralDependentLoansNetFairValueDisclosure
Namespace Prefix: | brbs_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Collateral dependent loans net unobservable inputs. + References No definition available. + Details
Name: | brbs_CollateralDependentLoansNetUnobservableInputs
Namespace Prefix: | brbs_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Collateral dependent loans net valuation technique. + References No definition available. + Details
Name: | brbs_CollateralDependentLoansNetValuationtechnique
Namespace Prefix: | brbs_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Collateral dependent loans range. + References No definition available. + Details
Name: | brbs_CollateralDependentLoansRange
Namespace Prefix: | brbs_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Disclosure of Other Real Estate Owned Measured on Nonrecurring Vasis Valuation Techniques [Line Items] + References No definition available. + Details
Name: | brbs_DisclosureOfOtherRealEstateOwnedMeasuredOnNonrecurringVasisValuationTechniquesLineItems
Namespace Prefix: | brbs_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

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

X
- Details
Name: | us-gaap_ValuationTechniqueAxis=brbs_AppraisedValueTechniqueMember
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: |