LOANS AND ALLOWANCE FOR LOAN AND LEASE LOSSES - TDR ACCRUAL STATUS (Details) $ in Thousands	12 Months Ended
Dec. 31, 2019 USD ($) loan	Dec. 31, 2018 USD ($) loan
Troubled Debt Restructurings disclosures
Number of Loans \| loan	1,828	495
Recorded Investment \| $	$ 30,781	$ 32,863
Residential Real Estate
Troubled Debt Restructurings disclosures
Number of Loans \| loan	194	216
Recorded Investment \| $	$ 19,770	$ 23,610
Commercial Real Estate
Troubled Debt Restructurings disclosures
Number of Loans \| loan	13	17
Recorded Investment \| $	$ 8,925	$ 7,774
Construction & land development
Troubled Debt Restructurings disclosures
Number of Loans \| loan	1	1
Recorded Investment \| $	$ 54	$ 65
Commercial & industrial
Troubled Debt Restructurings disclosures
Number of Loans \| loan	7	5
Recorded Investment \| $	$ 1,446	$ 979
Consumer
Troubled Debt Restructurings disclosures
Number of Loans \| loan	1,613	256
Recorded Investment \| $	$ 586	$ 435
Loans on nonaccrual status
Troubled Debt Restructurings disclosures
Minimum period for which TDRs continue to be reported as non-performing loans	6 months
Number of Loans \| loan	61	65
Recorded Investment \| $	$ 9,866	$ 8,152
Loans on nonaccrual status \| Residential Real Estate
Troubled Debt Restructurings disclosures
Number of Loans \| loan	53	60
Recorded Investment \| $	$ 4,402	$ 6,378
Loans on nonaccrual status \| Commercial Real Estate
Troubled Debt Restructurings disclosures
Number of Loans \| loan	4	3
Recorded Investment \| $	$ 4,040	$ 1,203
Loans on nonaccrual status \| Commercial & industrial
Troubled Debt Restructurings disclosures
Number of Loans \| loan	4	2
Recorded Investment \| $	$ 1,424	$ 571
Accrual Loans
Troubled Debt Restructurings disclosures
Number of Loans \| loan	1,767	430
Recorded Investment \| $	$ 20,915	$ 24,711
Accrual Loans \| Residential Real Estate
Troubled Debt Restructurings disclosures
Number of Loans \| loan	141	156
Recorded Investment \| $	$ 15,368	$ 17,232
Accrual Loans \| Commercial Real Estate
Troubled Debt Restructurings disclosures
Number of Loans \| loan	9	14
Recorded Investment \| $	$ 4,885	$ 6,571
Accrual Loans \| Construction & land development
Troubled Debt Restructurings disclosures
Number of Loans \| loan	1	1
Recorded Investment \| $	$ 54	$ 65
Accrual Loans \| Commercial & industrial
Troubled Debt Restructurings disclosures
Number of Loans \| loan	3	3
Recorded Investment \| $	$ 22	$ 408
Accrual Loans \| Consumer
Troubled Debt Restructurings disclosures
Number of Loans \| loan	1,613	256
Recorded Investment \| $	$ 586	$ 435

Represents the minimum period for which TDRs continue to be reported as non-performing loans.

No definition available.

Name:	rbcaa_MinimumPeriodForWhichFinancingReceivableModificationsRecordedInvestmentAreReported
Namespace Prefix:	rbcaa_
Data Type:	xbrli:durationItemType
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:	us-gaap_FinancingReceivableModificationsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953676-111524

+ Details

Name:	us-gaap_FinancingReceivableModificationsNumberOfContracts2
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, after troubled debt restructuring, of modified financing receivable.

+ References

+ Details

Name:	us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

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

- Details

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

- Details

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

- Details

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

- Details

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

- Details

Name:	us-gaap_InternalCreditAssessmentAxis=rbcaa_NonAccrualLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_InternalCreditAssessmentAxis=rbcaa_AccrualLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: