XML 53 R43.htm IDEA: XBRL DOCUMENT
v3.21.2

Organization and Basis of Presentation - Additional Information (Detail) $ in Millions |  | 1 Months Ended | 6 Months Ended
--- | --- | --- | ---
Apr. 30, 2021 | Apr. 30, 2021 | Mar. 31, 2021 | Jun. 30, 2021 USD ($)
Organization And Basis Of Presentation [Line Items] |  |  |  |
Stockholders equity note reverse stocks split conversion ratio | 1.5 | 1.5 | 1.5 |
Stock split description |  | 3-for-2 stock split | In March 2021, the Company’s board of directors approved a three-for-two stock split (“Stock Split”) effected in the form of a 50% stock dividend on the Company’s common stock outstanding paid on April 30, 2021 to shareholders of record as of April 20, 2021. |
Percentage of stock dividend payable on stock split of common stock. |  |  | 50.00% |
Dividend, payment date |  |  | Apr. 30, 2021 |
Dividend, record date |  |  | Apr. 20, 2021 |
Correction of Prior Period Classification Error [Member] |  |  |  |
Organization And Basis Of Presentation [Line Items] |  |  |  |
Decrease in loans held for sale |  |  |  | $ 30.4
Increase in loans held for investment |  |  |  | $ 30.4

X
- Definition Decrease in loans held for sale. + References No definition available. + Details
Name: | brbs_DecreaseInLoansHeldForSale
Namespace Prefix: | brbs_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Increase in loans held for investment. + References No definition available. + Details
Name: | brbs_IncreaseInLoansHeldForInvestment
Namespace Prefix: | brbs_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Organization and basis of presentation. + References No definition available. + Details
Name: | brbs_OrganizationAndBasisOfPresentationLineItems
Namespace Prefix: | brbs_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of stock dividend payable on stock split of common stock. + References No definition available. + Details
Name: | brbs_PercentageOfStockDividendPayableOnStockSplitOfCommonStock
Namespace Prefix: | brbs_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Date the declared dividend will be paid, in CCYY-MM-DD format. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=121583591&loc=d3e4304-108586 + Details
Name: | us-gaap_DividendPayableDateToBePaidDayMonthAndYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format. + References No definition available. + Details
Name: | us-gaap_DividendsPayableDateOfRecordDayMonthAndYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition Description of the stock split arrangement. Also provide the retroactive effect given by a stock split that occurs after the balance date but before the release of financial statements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 4.C) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187143-122770 + Details
Name: | us-gaap_StockholdersEquityNoteStockSplit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB TOPIC 4.C) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187143-122770 + Details
Name: | us-gaap_StockholdersEquityNoteStockSplitConversionRatio1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_RestatementAxis=srt_RevisionOfPriorPeriodReclassificationAdjustmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |