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FAIR VALUE (Details 8) (USD $)
3 Months Ended 12 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Real Estate, Write-down or Reserve      
Carrying value of other real estate owned $ 6,736,000us-gaap_RealEstateAcquiredThroughForeclosure   $ 11,243,000us-gaap_RealEstateAcquiredThroughForeclosure
Other real estate owned writedowns 484,000us-gaap_ImpairmentOfRealEstate 884,000us-gaap_ImpairmentOfRealEstate  
Other Real Estate Owned      
Real Estate, Write-down or Reserve      
Other Real Estate 6,736,000us-gaap_OtherRealEstate
/ us-gaap_RealEstatePropertiesAxis
= rbcaa_OtherRealEstateOwnedMember
  11,243,000us-gaap_OtherRealEstate
/ us-gaap_RealEstatePropertiesAxis
= rbcaa_OtherRealEstateOwnedMember
Other real estate owned writedowns 484,000us-gaap_ImpairmentOfRealEstate
/ us-gaap_RealEstatePropertiesAxis
= rbcaa_OtherRealEstateOwnedMember
884,000us-gaap_ImpairmentOfRealEstate
/ us-gaap_RealEstatePropertiesAxis
= rbcaa_OtherRealEstateOwnedMember
 
Hudson, Florida banking center      
Premises, Held for Sale      
Fair value of assets held for sale 1,000,000us-gaap_AssetsHeldForSaleLongLivedFairValueDisclosure
/ us-gaap_MajorPropertyClassAxis
= us-gaap_AssetsHeldForSaleMember
  1,000,000us-gaap_AssetsHeldForSaleLongLivedFairValueDisclosure
/ us-gaap_MajorPropertyClassAxis
= us-gaap_AssetsHeldForSaleMember
Written down value of assets $ 33,000,000us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf
/ us-gaap_MajorPropertyClassAxis
= us-gaap_AssetsHeldForSaleMember
  $ 0us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf
/ us-gaap_MajorPropertyClassAxis
= us-gaap_AssetsHeldForSaleMember