XML 67 R54.htm IDEA: XBRL DOCUMENT
v3.26.1

Allowance for Credit Losses - Schedule of Loans and Leases (Details) - USD ($) $ in Thousands | Mar. 31, 2026 | Dec. 31, 2025
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | $ 144,151 | $ 132,715
Allowance |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 24,027 | 21,435
Commercial and industrial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 60,487 | 46,860
Commercial and industrial | Allowance |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 11,952 | 4,502
Construction and land development |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 11,037 | 12,608
Construction and land development | Residential |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 1,991 | 2,033
Construction and land development | Other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 9,046 | 10,575
Construction and land development | Allowance |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 1,887 | 1,887
Construction and land development | Allowance | Residential |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 0 | 0
Construction and land development | Allowance | Other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 1,887 | 1,887
Real estate – 1-4 family mortgage: |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 3,574 | 3,763
Real estate – 1-4 family mortgage: | First lien |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 3,074 | 3,263
Real estate – 1-4 family mortgage: | Junior lien |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 0 | 0
Real estate – 1-4 family mortgage: | Home equity |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 500 | 500
Real estate – 1-4 family mortgage: | Allowance |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 134 | 116
Real estate – 1-4 family mortgage: | Allowance | First lien |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 134 | 116
Real estate – 1-4 family mortgage: | Allowance | Junior lien |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 0 | 0
Real estate – 1-4 family mortgage: | Allowance | Home equity |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 0 | 0
Commercial real estate - owner occupied |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 48,118 | 48,049
Commercial real estate - owner occupied | Other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 48,118 | 48,049
Commercial real estate - owner occupied | Commercial real estate - owner occupied |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 20,935 | 21,165
Commercial real estate - owner occupied | Multi family |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 0 | 0
Commercial real estate - owner occupied | Allowance |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 6,365 | 10,999
Commercial real estate - owner occupied | Allowance | Other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 6,365 | 10,999
Commercial real estate - owner occupied | Allowance | Commercial real estate - owner occupied |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 3,689 | 3,661
Commercial real estate - owner occupied | Allowance | Multi family |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 0 | 0
Consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 0 | 270
Consumer | Allowance |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 0 | 270
Real Estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 83,664 | 85,585
Real Estate | Commercial and industrial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 0 | 0
Real Estate | Construction and land development |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 11,037 | 12,608
Real Estate | Construction and land development | Residential |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 1,991 | 2,033
Real Estate | Construction and land development | Other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 9,046 | 10,575
Real Estate | Real estate – 1-4 family mortgage: |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 3,574 | 3,763
Real Estate | Real estate – 1-4 family mortgage: | First lien |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 3,074 | 3,263
Real Estate | Real estate – 1-4 family mortgage: | Junior lien |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 0 | 0
Real Estate | Real estate – 1-4 family mortgage: | Home equity |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 500 | 500
Real Estate | Commercial real estate - owner occupied |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 48,118 | 48,049
Real Estate | Commercial real estate - owner occupied | Other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 48,118 | 48,049
Real Estate | Commercial real estate - owner occupied | Commercial real estate - owner occupied |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 20,935 | 21,165
Real Estate | Commercial real estate - owner occupied | Multi family |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 0 | 0
Real Estate | Consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 0 | 0
Other Collateral |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 60,487 | 47,130
Other Collateral | Commercial and industrial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 60,487 | 46,860
Other Collateral | Construction and land development |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 0 | 0
Other Collateral | Construction and land development | Residential |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 0 | 0
Other Collateral | Construction and land development | Other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 0 | 0
Other Collateral | Real estate – 1-4 family mortgage: |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 0 | 0
Other Collateral | Real estate – 1-4 family mortgage: | First lien |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 0 | 0
Other Collateral | Real estate – 1-4 family mortgage: | Junior lien |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 0 | 0
Other Collateral | Real estate – 1-4 family mortgage: | Home equity |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 0 | 0
Other Collateral | Commercial real estate - owner occupied |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 0 | 0
Other Collateral | Commercial real estate - owner occupied | Other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 0 | 0
Other Collateral | Commercial real estate - owner occupied | Commercial real estate - owner occupied |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 0 | 0
Other Collateral | Commercial real estate - owner occupied | Multi family |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | 0 | 0
Other Collateral | Consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Collateral and the allowance for credit losses | $ 0 | $ 270

X
- Definition Collateral Dependent Loans and Lease, Allowance for Credit Losses + References No definition available. + Details
Name: | rnst_CollateralDependentLoansAndLeaseAllowanceForCreditLosses
Namespace Prefix: | rnst_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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 Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 310 -SubTopic 20 -Name Accounting Standards Codification -Section 40 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481628/310-20-40-7 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481990/310-10-45-2 + Details
Name: | us-gaap_AccountsNotesAndLoansReceivableLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

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

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

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

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

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

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

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

X
- Details
Name: | us-gaap_CollateralAxis=us-gaap_RealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CollateralAxis=rnst_OtherCollateralMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |