LOANS HELD FOR SALE - CONSUMER LOANS - LOWER COST (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023
Carried at lower of cost or fair value
Balance, beginning of period	$ 16,094	$ 13,169
Origination of consumer loans held for sale	153,188	184,425
Proceeds from the sale of consumer loans held for sale	(158,573)	(186,639)
Net gain on sale of consumer loans held for sale	2,374	1,789
Balance, end of period	$ 13,083	$ 12,744
Republic Credit Solutions \| Line of credit and credit card \| Minimum
Loans held for sale
Percentage of loan receivable held for sale (as a percent)	90.00%
Republic Credit Solutions \| Line of credit and credit card \| Maximum
Loans held for sale
Percentage of loan receivable held for sale (as a percent)	95.00%
Republic Credit Solutions \| Healthcare receivables
Loans held for sale
Percentage of loan receivable held for sale (as a percent)	100.00%
Republic Credit Solutions \| Installment loan
Loans held for sale
Term for intent to sell loans	16 days
Republic Credit Solutions \| Installment loan \| Minimum
Loans held for sale
Loan held-for-sale term	12 months
Republic Credit Solutions \| Installment loan \| Maximum
Loans held for sale
Loan held-for-sale term	60 months
Term for intent to sell loans	16 days

Represents information pertaining to gain or loss on sales of consumer loans lower of cost or fair value.

No definition available.

Name:	rbcaa_GainLossOnSalesOfConsumerLoansLowerOfCostOrFairValue
Namespace Prefix:	rbcaa_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- 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:	rbcaa_LoansHeldForSaleAtLowerOfCostOrFairValueRollForward
Namespace Prefix:	rbcaa_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- 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

No definition available.

+ Details

Name:	rbcaa_LoansHeldForSaleLineItems
Namespace Prefix:	rbcaa_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, after allowance for bad debt, of line of credit and credit card loan receivables held-for-sale, at lower of cost or fair value, that are not part of a disposal group. Excludes loans and leases covered under loss sharing agreements and loans classified as debt securities.

+ References

No definition available.

+ Details

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

- Definition

The amount of cash paid for the origination of consumer loans that are held for sale (lower of cost or fair value).

+ References

No definition available.

+ Details

Name:	rbcaa_PaymentsForOriginationOfConsumerLoansHeldForSaleLowerOfCostOrFairValue
Namespace Prefix:	rbcaa_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Represents information pertaining to percentage of consumer loans receivables held for sale.

+ References

No definition available.

+ Details

Name:	rbcaa_PercentageOfLoanReceivableHeldForSale
Namespace Prefix:	rbcaa_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The cash inflow resulting from the sale of consumer loans that are held with the intention to resell in the near future (lower of cost or fair value).

+ References

No definition available.

+ Details

Name:	rbcaa_ProceedsFromSaleOfConsumerLoansHeldForSaleLowerOfCostOrFairValue
Namespace Prefix:	rbcaa_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Term of sale of loan originated under the restarted program carried as held for sale.

+ References

No definition available.

+ Details

Name:	rbcaa_TermOfSaleOfLoanOriginatedUnderRestartedProgram
Namespace Prefix:	rbcaa_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Period between issuance and maturity of loan held for sale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- Details

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Namespace Prefix:
Data Type:	na
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- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=rbcaa_ShortTermLineOfCreditAndCreditCardMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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- Details

Name:	srt_RangeAxis=srt_MaximumMember
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Data Type:	na
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- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=rbcaa_ShortTermHealthcareReceivablesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=rbcaa_ShortTermInstallmentLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: