XML 155 R133.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Regulatory Matters - Narrative (Details) | Jan. 01, 2020
--- | ---
Banking and Thrift, Interest [Abstract] |
Regulatory capital, transitional period to phase out capital benefit by two-year delay | 3 years

X
- Definition Regulatory Capital, Transitional Period to Phase Out Capital Benefit by Two-Year Delay + References No definition available. + Details
Name: | rnst_RegulatoryCapitalTransitionalPeriodToPhaseOutCapitalBenefitByTwoYearDelay
Namespace Prefix: | rnst_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_BankingAndThriftInterestAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration