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INVESTMENT SECURITIES - TRUST PREFERRED SECURITY (Details) - Trust Preferred Securities $ in Millions	12 Months Ended
	Dec. 31, 2015 USD ($)
Marketable Securities [Line Items]
Par value of trust preferred security	$ 5
3-month Term SOFR rate plus
Marketable Securities [Line Items]
Interest rate - basis spread	1.59%

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

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:

X

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: