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INVESTMENT SECURITIES - TRUST PREFERRED SECURITY (Details) - Trust Preferred Securities Subject to Mandatory Redemption [Member] $ in Millions	12 Months Ended
	Dec. 31, 2015 USD ($)
Marketable Securities [Line Items]
Par value of trust preferred security	$ 5
Interest rate - basis spread	1.59%
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]	us-gaap:SecuredOvernightFinancingRateSofrMember

X

- Definition

The average percentage points added to the reference rate to compute the variable rate on the group of interest rate on securities.

+ References

No definition available.

+ Details

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

X

- Definition

Par value of trust preferred security.

+ References

No definition available.

+ Details

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

X

- Definition

Indicates type of variable interest rate on debt instrument.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 470
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477734/942-470-50-3

+ Details

Name:	us-gaap_DebtInstrumentVariableInterestRateTypeExtensibleEnumeration
Namespace Prefix:	us-gaap_
Data Type:	enum2:enumerationSetItemType
Balance Type:	na
Period Type:	duration

X

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

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_TrustPreferredSecuritiesSubjectToMandatoryRedemptionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: