Amount of additions to the accretable amount for acquired loans with evidence of deterioration of credit quality.

No definition available.

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

- Definition

Represents the amount loan's discounts on the balance sheet, which are accreted into income over time.

+ References

No definition available.

+ Details

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Namespace Prefix:	rbcaa_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of net accretion into interest income on loans, including loans fees, in acquired loans with evidence of deterioration of credit quality.

+ References

No definition available.

+ Details

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

- Definition

The amount of the loan's contractually required payments receivable in excess of the amount of its cash flows expected to be collected. This relates to loans with and without deteriorating of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

+ References

No definition available.

+ Details

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Namespace Prefix:	rbcaa_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents the amount of reclassification to (from) non-accretable and accretable amounts in acquired loans with evidence of deterioration of credit quality.

+ References

No definition available.

+ Details

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

- Definition

Represents the amount of discounts on the balance sheet, which are accreted into income over time with and without evidence of deterioration of credit quality.

+ References

No definition available.

+ Details

Name:	rbcaa_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableAmount
Namespace Prefix:	rbcaa_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Fair value at acquisition of acquired loans not accounted for as debt securities with and without evidence of deterioration of credit quality.

+ References

No definition available.

+ Details

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

- Definition

Gross amount of contractually required payments on loans and leases receivable.

+ References

No definition available.

+ Details

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

- Definition

Period of time for loans to be past due in determining which loans are classified as PCI loans.

+ References

No definition available.

+ Details

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

- Definition

The amount of the loan's contractually required payments receivable in excess of the amount of its cash flows expected to be collected. This relates to loans with deteriorating of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

+ References

No definition available.

+ Details

Name:	us-gaap_CertainLoansAcquiredInTransferNonaccretableDifference
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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

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

- Definition

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=65884687&loc=d3e4428-111522

+ Details

Name:	us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	us-gaap_BusinessAcquisitionAxis=rbcaa_CornerstoneBancorpIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=rbcaa_NonPurchasedCreditImpairedLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=us-gaap_ReceivablesAcquiredWithDeterioratedCreditQualityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=rbcaa_NonOwnerOccupiedResidentialRealEstateLoansMember
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
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Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_HomeEquityMember
Namespace Prefix:
Data Type:	na
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- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix:
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LOANS AND ALLOWANCE FOR LOAN AND LEASE LOSSES - PCI RECONCILIATION OF LOANS (Details) - USD ($) $ in Thousands		12 Months Ended
	May 17, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2017	Dec. 31, 2016
Disclosures on loans acquired
Contractually receivable					$ 4,014,673	$ 3,816,086
Carrying value of loans					4,014,034	3,810,778
Cornerstone
Disclosures on loans acquired
Contractually receivable	$ 195,136
Non-accretable Discount	(1,941)
Accretable Discount	(3,571)
Acquisition-Day Fair Value	$ 189,624
Cornerstone \| Minimum
Disclosures on loans acquired
Period of past due loans to be considered PCI loans	90 days
Non PCI Loans \| Cornerstone
Disclosures on loans acquired
Contractually receivable	$ 185,510
Accretable Discount	(3,182)
Acquisition-Day Fair Value	182,328
PCI loan
Disclosures on loans acquired
Contractually receivable					5,435	15,587
Non-accretable amount					(1,691)	(1,713)
Accretable amount		$ (3,600)	$ (4,125)	$ (2,297)	(140)	(3,600)
Carrying value of loans					3,604	10,274
Rollforward of the accretable discount on PCI loans
Balance at the beginning of the period		(3,600)	(4,125)	(2,297)
Transfers between non-accretable and accretable		(28)	(206)	(4,055)
Net accretion into interest income on loans, including loan fees		3,488	1,120	2,227
Generated from acquisition of Cornerstone Bancorp, Inc. (recasted)			(389)
Balance at the end of the period		$ (140)	$ (3,600)	$ (4,125)
PCI loan \| Cornerstone
Disclosures on loans acquired
Contractually receivable	9,626
Non-accretable Discount	(1,941)
Accretable Discount	(389)
Acquisition-Day Fair Value	7,296
Residential Real Estate - Owner Occupied
Disclosures on loans acquired
Carrying value of loans					921,565	1,000,148
Residential Real Estate - Owner Occupied \| Non PCI Loans \| Cornerstone
Disclosures on loans acquired
Contractually receivable	15,487
Accretable Discount	(393)
Acquisition-Day Fair Value	15,094
Residential Real Estate - Owner Occupied \| PCI loan \| Cornerstone
Disclosures on loans acquired
Contractually receivable	2,963
Non-accretable Discount	(822)
Accretable Discount	(15)
Acquisition-Day Fair Value	2,126
Residential Real Estate - Non Owner Occupied
Disclosures on loans acquired
Carrying value of loans					205,081	156,605
Residential Real Estate - Non Owner Occupied \| Non PCI Loans \| Cornerstone
Disclosures on loans acquired
Contractually receivable	11,196
Accretable Discount	(101)
Acquisition-Day Fair Value	11,095
Residential Real Estate - Non Owner Occupied \| PCI loan \| Cornerstone
Disclosures on loans acquired
Contractually receivable	1,721
Non-accretable Discount	(320)
Accretable Discount	(167)
Acquisition-Day Fair Value	1,234
Commercial Real Estate \| Non PCI Loans \| Cornerstone
Disclosures on loans acquired
Contractually receivable	106,089
Accretable Discount	(1,498)
Acquisition-Day Fair Value	104,591
Commercial Real Estate \| PCI loan \| Cornerstone
Disclosures on loans acquired
Contractually receivable	4,315
Non-accretable Discount	(617)
Accretable Discount	(197)
Acquisition-Day Fair Value	3,501
Construction & land development \| Non PCI Loans \| Cornerstone
Disclosures on loans acquired
Contractually receivable	18,277
Accretable Discount	(502)
Acquisition-Day Fair Value	17,775
Construction & land development \| PCI loan \| Cornerstone
Disclosures on loans acquired
Contractually receivable	175
Acquisition-Day Fair Value	175
Commercial & industrial \| Non PCI Loans \| Cornerstone
Disclosures on loans acquired
Contractually receivable	11,462
Accretable Discount	(191)
Acquisition-Day Fair Value	11,271
Commercial & industrial \| PCI loan \| Cornerstone
Disclosures on loans acquired
Contractually receivable	66
Non-accretable Discount	(1)
Accretable Discount	1
Acquisition-Day Fair Value	66
Home equity lines of credit
Disclosures on loans acquired
Carrying value of loans					$ 347,655	$ 341,285
Home equity lines of credit \| Non PCI Loans \| Cornerstone
Disclosures on loans acquired
Contractually receivable	20,652
Accretable Discount	(350)
Acquisition-Day Fair Value	20,302
Home equity lines of credit \| PCI loan \| Cornerstone
Disclosures on loans acquired
Contractually receivable	382
Non-accretable Discount	(178)
Accretable Discount	(11)
Acquisition-Day Fair Value	193
Consumer and other \| Non PCI Loans \| Cornerstone
Disclosures on loans acquired
Contractually receivable	2,347
Accretable Discount	(147)
Acquisition-Day Fair Value	2,200
Consumer and other \| PCI loan \| Cornerstone
Disclosures on loans acquired
Contractually receivable	4
Non-accretable Discount	(3)
Acquisition-Day Fair Value	$ 1