XML 46 R34.htm IDEA: XBRL DOCUMENT
v3.25.1

Loans and Asset Quality - Schedule of Allowance of Credit Losses By Category (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Dec. 31, 2024
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Beginning Balance | $ 21,731 | $ 21,336 | $ 21,336
Provision for credit losses | 450 |  |
Provision for credit losses | 450 | 300 |
Charge-offs | (387) | (131) | (803)
Recoveries | 41 | 59 |
Ending Balance | 21,835 | 21,564 | 21,731
Unfunded commitments |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Beginning Balance | 642 | 442 | 442
Provision for credit losses | 0 | 0 |
Ending Balance | 642 | 442 | 642
Real estate | Commercial real estate |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Beginning Balance | 9,047 | 9,118 | 9,118
Provision for credit losses | 112 |  |
Provision for credit losses |  | 115 |
Charge-offs | 0 | 0 |
Recoveries | 0 | 0 |
Ending Balance | 9,159 | 9,233 | 9,047
Real estate | One-to-four family residential |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Beginning Balance | 6,452 | 7,484 | 7,484
Provision for credit losses | 22 |  |
Provision for credit losses |  | 49 |
Charge-offs | (22) | 0 |
Recoveries | 3 | 3 |
Ending Balance | 6,455 | 7,536 | 6,452
Real estate | Construction and development |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Beginning Balance | 1,653 | 1,309 | 1,309
Provision for credit losses | 202 |  |
Provision for credit losses |  | (117) |
Charge-offs | (250) | 0 |
Recoveries | 0 | 0 |
Ending Balance | 1,605 | 1,192 | 1,653
Commercial and industrial |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Beginning Balance | 4,123 | 2,553 | 2,553
Provision for credit losses | 117 |  |
Provision for credit losses |  | 258 |
Charge-offs | (39) | (51) |
Recoveries | 7 | 15 |
Ending Balance | 4,208 | 2,775 | 4,123
Tax-exempt |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Beginning Balance | 103 | 575 | 575
Provision for credit losses | (4) |  |
Provision for credit losses |  | (50) |
Charge-offs | 0 | 0 |
Recoveries | 0 | 0 |
Ending Balance | 99 | 525 | 103
Consumer |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Beginning Balance | 353 | 297 | 297
Provision for credit losses | 1 |  |
Provision for credit losses |  | 45 |
Charge-offs | (76) | (80) |
Recoveries | 31 | 41 |
Ending Balance | $ 309 | $ 303 | $ 353

X
- Definition Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal) Excluding Unfunded Loan Commitments + References No definition available. + Details
Name: | rrbi_FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversalExcludingUnfundedLoanCommitments
Namespace Prefix: | rrbi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-1 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, excluding accrued interest, of increase in allowance for credit loss on financing receivable from recovery. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossRecovery
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount, excluding accrued interest, of credit loss expense (reversal of expense) on financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_UnfundedLoanCommitmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=rrbi_RealEstatePortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_CommercialRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ResidentialRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=rrbi_ConstructionAndDevelopmentEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=rrbi_CommercialAndIndustrialSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=rrbi_TaxExemptPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |