INVESTMENT SECURITIES - SALES OF AFS (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2018	Mar. 31, 2017
INVESTMENT SECURITIES
Net gains (losses) on securities available for sale	$ 0	$ 0

Amount of realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

No definition available.

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