XML 68 R57.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Non Purchased Loans - Impaired Loans (Details) - Non purchased loans and leases - USD ($) $ in Thousands | Jun. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Impaired loans |  |
Unpaid Contractual Principal Balance | $ 20,044 | $ 26,382
Recorded Investment With Allowance | 14,147 | 21,040
Recorded Investment With No Allowance | 1,316 | 703
Total Recorded Investment | 15,463 | 21,743
Related Allowance | 1,393 | 2,567
Commercial, financial, agricultural |  |
Impaired loans |  |
Unpaid Contractual Principal Balance | 2,634 | 3,043
Recorded Investment With Allowance | 2,319 | 2,365
Recorded Investment With No Allowance | 0 | 0
Total Recorded Investment | 2,319 | 2,365
Related Allowance | 376 | 138
Lease financing |  |
Impaired loans |  |
Unpaid Contractual Principal Balance | 335 | 159
Recorded Investment With Allowance | 335 | 159
Recorded Investment With No Allowance | 0 | 0
Total Recorded Investment | 335 | 159
Related Allowance | 4 | 2
Real estate – construction |  |
Impaired loans |  |
Unpaid Contractual Principal Balance | 0 | 578
Recorded Investment With Allowance | 0 | 578
Recorded Investment With No Allowance | 0 | 0
Total Recorded Investment | 0 | 578
Related Allowance | 0 | 4
Real estate – 1-4 family mortgage |  |
Impaired loans |  |
Unpaid Contractual Principal Balance | 8,065 | 10,018
Recorded Investment With Allowance | 6,935 | 8,169
Recorded Investment With No Allowance | 0 | 703
Total Recorded Investment | 6,935 | 8,872
Related Allowance | 64 | 561
Real estate – commercial mortgage |  |
Impaired loans |  |
Unpaid Contractual Principal Balance | 8,901 | 12,463
Recorded Investment With Allowance | 4,454 | 9,652
Recorded Investment With No Allowance | 1,316 | 0
Total Recorded Investment | 5,770 | 9,652
Related Allowance | 948 | 1,861
Installment loans to individuals |  |
Impaired loans |  |
Unpaid Contractual Principal Balance | 109 | 121
Recorded Investment With Allowance | 104 | 117
Recorded Investment With No Allowance | 0 | 0
Total Recorded Investment | 104 | 117
Related Allowance | $ 1 | $ 1

X
- Definition Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953550-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

X
- Definition Amount of allowance for credit losses related to recorded investment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableRelatedAllowance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investment in impaired financing receivables for which there is no related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953550-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investment in impaired financing receivables for which there is a related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953550-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

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

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

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ConstructionLoansMember
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_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=rnst_CommercialResidentialMortgageMember
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: |