XML 90 R81.htm IDEA: XBRL DOCUMENT
v3.23.3

Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2023 | Jan. 01, 2023 | Dec. 31, 2022
Other Commitments [Line Items] |  |  |
Outstanding loan commitments | $ 707,900 |  | $ 736,100
Outstanding stand-by letters of credit | 29,300 |  | 29,800
Reserve for unfunded commitments (1) |  | $ 3,700 | 1,812
Credit losses for unfunded commitments | 400 |  |
Future commitments outstanding related to investments | 17,700 |  |
Other Liabilities [Member] |  |  |
Other Commitments [Line Items] |  |  |
Reserve for unfunded commitments (1) | 5,100 |  | 1,800
Performance Stand-by Letters of Credit [Member] |  |  |
Other Commitments [Line Items] |  |  |
Outstanding stand-by letters of credit | $ 0 |  | $ 0

X
- Definition Credit losses for unfunded commitments. + References No definition available. + Details
Name: | brbs_CreditLossesForUnfundedCommitments1
Namespace Prefix: | brbs_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Future commitments outstanding related to investments. + References No definition available. + Details
Name: | brbs_FutureCommitmentsOutstandingRelatedToInvestments
Namespace Prefix: | brbs_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Outstanding loan commitments. + References No definition available. + Details
Name: | brbs_OutstandingLoanCommitments
Namespace Prefix: | brbs_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Reserve for unfunded commitments. + References No definition available. + Details
Name: | brbs_ReserveForUnfundedCommitments
Namespace Prefix: | brbs_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 460 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482425/460-10-50-4 + Details
Name: | us-gaap_GuaranteeObligationsCurrentCarryingValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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 No definition available. + Details
Name: | us-gaap_OtherCommitmentsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_OtherLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=brbs_PerformanceStandByLettersOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |