XML 71 R65.htm IDEA: XBRL DOCUMENT
v3.24.1.u1

Minimum Regulatory Capital Requirements - Additional Information (Detail) - USD ($) $ in Millions | Dec. 31, 2025 | Dec. 31, 2024 | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | --- | --- | ---
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items] |  |  |  |
Leverage ratio |  |  | 0.10 |
Capital ratio |  |  | 0.13 |
Banking regulation capital transitional amount |  |  | $ 8.1 |
Banking regulation capital transitional amount substracted |  |  | $ 4.1 | $ 2.0
CECL Adjustment to Regulatory Capital [Member] |  |  |  |
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items] |  |  |  |
Adjustment to regulatory capital |  |  |  | 25.00%
CECL Adjustment to Regulatory Capital [Member] | Forecast [Member] |  |  |  |
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items] |  |  |  |
Adjustment to regulatory capital | 25.00% | 50.00% |  |
Common Equity Tier 1 Capital [Member] |  |  |  |
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items] |  |  |  |
Capital conservation buffer |  |  | 2.50% |

X
- Definition Adjustment to regulatory capital + References No definition available. + Details
Name: | brbs_AdjustmentToRegulatoryCapital
Namespace Prefix: | brbs_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Banking regulation capital transitional amount. + References No definition available. + Details
Name: | brbs_BankingRegulationCapitalTransitionalAmount
Namespace Prefix: | brbs_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Banking regulation capital transitional amount substracted. + References No definition available. + Details
Name: | brbs_BankingRegulationCapitalTransitionalAmountSubstracted
Namespace Prefix: | brbs_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Risk weighted assets capital conservation buffer. + References No definition available. + Details
Name: | brbs_RiskWeightedAssetsCapitalConservationBuffer
Namespace Prefix: | brbs_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Minimum capital conservation buffer percentage required to avoid restriction on payout amount of eligible retained income as defined by regulatory framework. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480696/942-505-50-1 + Details
Name: | us-gaap_BankingRegulationCapitalConservationBufferCapitalConservedMinimum
Namespace Prefix: | us-gaap_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

X
- Definition Minimum leverage buffer percentage as defined by regulatory framework. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480696/942-505-50-1 + Details
Name: | us-gaap_BankingRegulationLeverageBufferMinimum
Namespace Prefix: | us-gaap_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

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 Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Publisher FASB -URI https://asc.fasb.org//1943274/2147480696/942-505-50-1B Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480696/942-505-50-1 + Details
Name: | us-gaap_ComplianceWithRegulatoryCapitalRequirementsUnderBankingRegulationsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=brbs_CeclAdjustmentToRegulatoryCapitalMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementScenarioAxis=srt_ScenarioForecastMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=brbs_CommonEquityTierOneCapitalMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |