XML 55 R44.htm IDEA: XBRL DOCUMENT v3.25.3

Fair Value - Schedule of Fair Value of Assets Measured on Nonrecurring Basis (Details) - Remeasured and Impaired Loans - Nonrecurring - Level 3 - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value of collateral dependent loans before allowance	$ 7,692	$ 1,672
Specific allowance	(682)	(658)
Fair value of collateral dependent loans	7,010	1,014
Foreclosed assets remeasured at initial recognition:
Carrying value of foreclosed assets prior to remeasurement	0	38
Charge-offs	0	0
Fair value of foreclosed assets	$ 0	$ 38

X

- Definition

Financing Receivable, Fair Value Disclosure

+ References

No definition available.

+ Details

Name:	rrbi_FinancingReceivableFairValueDisclosure
Namespace Prefix:	rrbi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Financing Receivable, Gross

+ References

No definition available.

+ Details

Name:	rrbi_FinancingReceivableGross
Namespace Prefix:	rrbi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Financing Receivable, Specific Allowance

+ References

No definition available.

+ Details

Name:	rrbi_FinancingReceivableSpecificAllowance
Namespace Prefix:	rrbi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Foreclosed Assets, at Carrying Value, Foreclosed

+ References

No definition available.

+ Details

Name:	rrbi_ForeclosedAssetsAtCarryingValueForeclosed
Namespace Prefix:	rrbi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Foreclosed Assets, Charge-Off, Fair Value Disclosure

+ References

No definition available.

+ Details

Name:	rrbi_ForeclosedAssetsChargeOffFairValueDisclosure
Namespace Prefix:	rrbi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Foreclosed Assets, Fair Value Disclosure, Foreclosed

+ References

No definition available.

+ Details

Name:	rrbi_ForeclosedAssetsFairValueDisclosureForeclosed
Namespace Prefix:	rrbi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 100
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482078/820-10-55-100

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-3

+ Details

Name:	us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_ForeclosedAssetsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=rrbi_RemeasuredAndImpairedLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsNonrecurringMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: