XML 52 R45.htm IDEA: XBRL DOCUMENT v3.25.3

Loans and ACL - Summary of Amortized Cost of Collateral-Dependent Loans, Individually Evaluated for Credit Losses (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2025	Dec. 31, 2024
Loans and Leases Receivable Disclosure [Line Items]
Amortized cost of collateral dependent loans	$ 59,238	$ 79,419
Commercial and Industrial [Member]
Loans and Leases Receivable Disclosure [Line Items]
Amortized cost of collateral dependent loans	20,145	42,723
Real Estate [Member] | Construction, Commercial [Member]
Loans and Leases Receivable Disclosure [Line Items]
Amortized cost of collateral dependent loans	0	116
Real Estate [Member] | Commercial [Member]
Loans and Leases Receivable Disclosure [Line Items]
Amortized cost of collateral dependent loans	32,879	26,994
Real Estate [Member] | Residential [Member]
Loans and Leases Receivable Disclosure [Line Items]
Amortized cost of collateral dependent loans	$ 6,214	$ 9,586

X

- Definition

Amortized cost of collateral dependent loans

+ References

No definition available.

+ Details

Name:	brbs_AmortizedCostOfCollateralDependentLoans
Namespace Prefix:	brbs_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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_LoansAndLeasesReceivableDisclosureLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=brbs_CommercialAndIndustrialMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_RealEstateLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=brbs_CommercialConstructionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=brbs_CommercialMortgageMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=brbs_ResidentialMortgagesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: