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INVESTMENT SECURITIES - TRUST PREFERRED SECURITY (Details) - Trust Preferred Securities $ in Millions | 12 Months Ended
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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
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Balance Type: | na
Period Type: | duration

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- Definition Par value of trust preferred security. + References No definition available. + Details
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Namespace Prefix: | rbcaa_
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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
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |