XML 116 R105.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Fair Value Measurements - OREO Measured at Fair Value on a Nonrecurring Basis (Details) - Level 3 - Fair Value, Measurements, Nonrecurring - USD ($) $ in Thousands | Jun. 30, 2018 | Dec. 31, 2017
--- | --- | ---
OREO measured at fair value on a nonrecurring basis |  |
Carrying amount prior to remeasurement | $ 3,212 | $ 8,732
Impairment recognized in results of operations | (550) | (1,340)
Fair value | $ 2,662 | $ 7,392

X
- Definition Other Real Estate, Non Covered, Carrying Amount + References No definition available. + Details
Name: | rnst_OtherRealEstateNonCoveredCarryingAmount
Namespace Prefix: | rnst_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Other Real Estate, Non Covered, Impairment Recognized + References No definition available. + Details
Name: | rnst_OtherRealEstateNonCoveredImpairmentRecognized
Namespace Prefix: | rnst_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Other real estate owned measured at fair value on nonrecurring basis. + References No definition available. + Details
Name: | rnst_OtherRealEstateOwnedMeasuredAtFairValueOnNonrecurringBasisAbstract
Namespace Prefix: | rnst_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Other real estate owned non covered fair value. + References No definition available. + Details
Name: | rnst_OtherRealEstateOwnedNonCoveredFairValue
Namespace Prefix: | rnst_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsNonrecurringMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |