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INVESTMENT SECURITIES - ACCRUED INTEREST (Details) - Other Assets - USD ($)	Mar. 31, 2026	Dec. 31, 2025
Debt and Equity Securities, FV-NI [Line Items]
Accrued interest on AFS debt securities excluded from ACLS	$ 5,000,000	$ 5,000,000
Accrued interest on HTM debt securities excluded from ACLS	$ 11,000	$ 12,000

X

- Definition

Accrued interest on available for sale debt securities excluded from Allowances for credit losses on securities.

+ References

No definition available.

+ Details

Name:	rbcaa_AccruedInterestOnAvailableForSaleDebtSecurities
Namespace Prefix:	rbcaa_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Accrued interest on held to maturity debt securities excluded from Allowances for credit losses on securities.

+ References

No definition available.

+ Details

Name:	rbcaa_AccruedInterestOnHeldToMaturityDebtSecurities
Namespace Prefix:	rbcaa_
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/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6B
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6B

+ Details

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

X

- Details

Name:	us-gaap_BalanceSheetLocationAxis=rbcaa_OtherAssetsAndAccruedInterestReceivableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: