XML 61 R51.htm IDEA: XBRL DOCUMENT
v3.22.1

Non Purchased Loans - Impact of Modifications Classified as Restructured Loans (Details) - Non purchased loans and leases $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2022 USD ($) loan | Mar. 31, 2021 USD ($) loan
Restructured loans |  |
Number of Loans | loan | 8 | 4
Pre- Modification Amortized Cost | $ 7,365 | $ 1,269
Post- Modification Amortized Cost | $ 7,373 | $ 1,245
Real estate – 1-4 family mortgage: | Primary |  |
Restructured loans |  |
Number of Loans | loan | 7 | 3
Pre- Modification Amortized Cost | $ 865 | $ 432
Post- Modification Amortized Cost | $ 873 | $ 435
Real estate – commercial mortgage: | Owner-occupied |  |
Restructured loans |  |
Number of Loans | loan | 1 |
Pre- Modification Amortized Cost | $ 6,500 |
Post- Modification Amortized Cost | $ 6,500 |
Real estate – commercial mortgage: | Non-owner occupied |  |
Restructured loans |  |
Number of Loans | loan |  | 1
Pre- Modification Amortized Cost |  | $ 837
Post- Modification Amortized Cost |  | $ 810

X
- Definition Troubled Debt Restructuring Financing Receivable Modifications [Abstract] + References No definition available. + Details
Name: | rnst_TroubledDebtRestructuringFinancingReceivableModificationsAbstract
Namespace Prefix: | rnst_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953676-111524 + Details
Name: | us-gaap_FinancingReceivableModificationsNumberOfContracts2
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, after troubled debt restructuring, of modified financing receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953676-111524 + Details
Name: | us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount, before troubled debt restructuring, of financing receivable to be modified. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953676-111524 + Details
Name: | us-gaap_FinancingReceivableModificationsPreModificationRecordedInvestment2
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=rnst_LoanPortfolioNonPurchasedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=rnst_RealEstateOneToFourFamilyMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ParticipatingMortgageLoansAxis=rnst_PrimaryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=rnst_CommercialResidentialMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ParticipatingMortgageLoansAxis=rnst_OwnerOccupiedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ParticipatingMortgageLoansAxis=rnst_NonownerOccupiedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |