INVESTMENT SECURITIES - ACLS ROLLFORWARD (Details) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2020 USD ($)	Jun. 30, 2020 USD ($)
Debt Securities
Balance	$ 297
Provision	(24)	$ 222
Balance	273	273
Debt Securities, Held-to-maturity, Nonaccrual	0	0
Bond maturity during the period	5,000
Debt Securities,Held To Maturity, Collateral Dependent	0	0
Corporate bonds \| Available-for-Sale Securities
Debt Securities
Balance	126
Provision		126
Balance	126	126
Corporate bonds \| Held-to-Maturity Securities
Debt Securities
Balance	171
Provision	(24)	96
Balance	$ 147	147
ASU 2016-13
Debt Securities
Balance		51
ASU 2016-13 \| Adjustment
Debt Securities
Balance		51
ASU 2016-13 \| Adjustment \| Corporate bonds \| Held-to-Maturity Securities
Debt Securities
Balance		$ 51

Represents the bond maturity amount during the period which reduced the allowance for credit losses.

No definition available.

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

- Definition

Amount of allowance for credit loss for debt securities.

+ 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 expense (reversal of expense) for expected credit loss on investment in debt security.

+ References

No definition available.

+ Details

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

- Definition

Amount of investment in debt security measured at amortized cost (held-to-maturity) considered collateral dependent.

+ References

No definition available.

+ Details

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

- Definition

Amount of investment in debt security measured at amortized cost (held-to-maturity) on nonaccrual status.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 16
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919258-210447

+ Details

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

- 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

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_InformationByCategoryOfDebtSecurityAxis=us-gaap_AvailableforsaleSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_InformationByCategoryOfDebtSecurityAxis=us-gaap_HeldtomaturitySecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AdjustmentsForNewAccountingPronouncementsAxis=us-gaap_AccountingStandardsUpdate201613Member
Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

Name:	srt_RestatementAxis=srt_RestatementAdjustmentMember
Namespace Prefix:
Data Type:	na
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Period Type: