XML 71 R55.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Securities - Schedule of Proceeds from Sales of Securities AFS and Gross Gain (Loss) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Investments, Debt and Equity Securities [Abstract] |  |  |
Proceeds | $ 0 | $ 0 | $ 41,234
Gross gain | 0 | 0 | 64
Gross loss | $ 0 | $ 0 | $ (123)

X
- Definition Debt Securities, Realized Gain + References No definition available. + Details
Name: | rrbi_DebtSecuritiesRealizedGain
Namespace Prefix: | rrbi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Debt Securities, Realized Loss + References No definition available. + Details
Name: | rrbi_DebtSecuritiesRealizedLoss
Namespace Prefix: | rrbi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Proceeds From Sale Of Debt Securities + References No definition available. + Details
Name: | rrbi_ProceedsFromSaleOfDebtSecurities
Namespace Prefix: | rrbi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration