Represents information pertaining to the ownership interest retained from consumer loans held for sale.

No definition available.

Name:	rbcaa_ConsumerLoansHeldForSaleInterestRetained
Namespace Prefix:	rbcaa_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents information pertaining to consumer loans held for sale period within origination.

+ References

No definition available.

+ Details

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

- Definition

The net realizable value of loans that will be sold to other entities.

+ References

No definition available.

+ Details

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

- Definition

Number of tranches carried at fair value.

+ References

No definition available.

+ Details

Name:	rbcaa_NumberOfTranchesCarriedAtFairValue
Namespace Prefix:	rbcaa_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- 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:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the reclassification of interest into held-for-sale.

+ References

No definition available.

+ Details

Name:	rbcaa_ReclassificationOfInterestIntoHeldForSale
Namespace Prefix:	rbcaa_
Data Type:	num:percentItemType
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

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

- Definition

The face amount of loans that will be sold to other entities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522

+ Details

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

- Definition

Value of loans held-for-sale transferred to loans held in the entity's portfolio in noncash transactions.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4332-108586

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4313-108586

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=rbcaa_RepublicCreditSolutionsDivisionMember
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:

- Details

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

- Details

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

Name:	us-gaap_FairValueByAssetClassAxis=us-gaap_ServicingContractsMember
Namespace Prefix:
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FAIR VALUE - POLICIES (Details) $ in Thousands	3 Months Ended		9 Months Ended	27 Months Ended	30 Months Ended
FAIR VALUE - POLICIES (Details) $ in Thousands	Sep. 30, 2018 USD ($) item	Jun. 30, 2018 USD ($)	Sep. 30, 2018 USD ($) item	Mar. 31, 2018	Mar. 31, 2018	Dec. 31, 2017 item
Assets and Liabilities Measured on Recurring Basis
Transfers from loans held for sale to held for investment			$ 2,237
Republic Credit Solutions \| Installment loan
Assets and Liabilities Measured on Recurring Basis
Percentage of loan receivable held for sale (as a percent)				100.00%
Consumer loans held for sale period				21 days
Transfers from loans held for sale to held for investment		$ 2,200
Republic Credit Solutions \| Credit card
Assets and Liabilities Measured on Recurring Basis
Percentage of loan receivable held for sale (as a percent)	100.00%				90.00%
Consumer loans held for sale period					2 days
Interest retained (as a percent)					10.00%
Reclassification of interest into held-for-sale	10.00%
Book value of portfolio	$ 3,500		3,500
Net realizable value of portfolio	$ 1,500		$ 1,500
Republic Credit Solutions \| Line of credit and credit card
Assets and Liabilities Measured on Recurring Basis
Percentage of loan receivable held for sale (as a percent)			90.00%
Consumer loans held for sale period			2 days
Interest retained (as a percent)			10.00%
Mortgage Servicing Rights
Assets and Liabilities Measured on Recurring Basis
Number of tranches carried at fair value \| item	0		0			0