LOANS AND ALLOWANCE FOR LOAN AND LEASE LOSSES - TDR ACCRUAL STATUS (Details) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2016 USD ($) item	Dec. 31, 2015 USD ($) item
Troubled Debt Restructurings disclosures
Number of Loans \| item	339	347
Recorded Investment \| $	$ 46,167	$ 49,580
Residential Real Estate
Troubled Debt Restructurings disclosures
Number of Loans \| item	303	307
Recorded Investment \| $	$ 33,464	$ 35,209
Commercial real estate
Troubled Debt Restructurings disclosures
Number of Loans \| item	25	26
Recorded Investment \| $	$ 11,489	$ 11,332
Construction & land development
Troubled Debt Restructurings disclosures
Number of Loans \| item	5	8
Recorded Investment \| $	$ 912	$ 2,717
Commercial & Industrial
Troubled Debt Restructurings disclosures
Number of Loans \| item	6	6
Recorded Investment \| $	$ 302	$ 322
Loans on nonaccrual status
Troubled Debt Restructurings disclosures
Number of Loans \| item	85	86
Recorded Investment \| $	$ 11,376	$ 12,472
Minimum period for which TDRs continue to be reported as non-performing loans	6 months
Loans on nonaccrual status \| Residential Real Estate
Troubled Debt Restructurings disclosures
Number of Loans \| item	75	74
Recorded Investment \| $	$ 7,494	$ 7,365
Loans on nonaccrual status \| Commercial real estate
Troubled Debt Restructurings disclosures
Number of Loans \| item	8	9
Recorded Investment \| $	$ 3,603	$ 3,324
Loans on nonaccrual status \| Construction & land development
Troubled Debt Restructurings disclosures
Number of Loans \| item	1	2
Recorded Investment \| $	$ 86	$ 1,589
Loans on nonaccrual status \| Commercial & Industrial
Troubled Debt Restructurings disclosures
Number of Loans \| item	1	1
Recorded Investment \| $	$ 193	$ 194
Accrual Loans
Troubled Debt Restructurings disclosures
Number of Loans \| item	254	261
Recorded Investment \| $	$ 34,791	$ 37,108
Accrual Loans \| Residential Real Estate
Troubled Debt Restructurings disclosures
Number of Loans \| item	228	233
Recorded Investment \| $	$ 25,970	$ 27,844
Accrual Loans \| Commercial real estate
Troubled Debt Restructurings disclosures
Number of Loans \| item	17	17
Recorded Investment \| $	$ 7,886	$ 8,008
Accrual Loans \| Construction & land development
Troubled Debt Restructurings disclosures
Number of Loans \| item	4	6
Recorded Investment \| $	$ 826	$ 1,128
Accrual Loans \| Commercial & Industrial
Troubled Debt Restructurings disclosures
Number of Loans \| item	5	5
Recorded Investment \| $	$ 109	$ 128

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 within the previous 12 months and for which there was a payment default.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953682-111524

+ Details

Name:	us-gaap_FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of investment related to financing receivables modified by troubled debt restructurings within the previous 12 months, for which there was a payment default.

+ References

+ Details

Name:	us-gaap_FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

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

- Details

Name:	us-gaap_FinancingReceivableTroubledDebtRestructuringAxis=us-gaap_CommercialRealEstateOtherReceivableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableTroubledDebtRestructuringAxis=us-gaap_CommercialRealEstateConstructionFinancingReceivableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableTroubledDebtRestructuringAxis=rbcaa_CommercialAndIndustrialMember
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: