XML 76 R63.htm IDEA: XBRL DOCUMENT
v3.7.0.1

Purchased Loans (Details 2) - Purchased - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2017 | Mar. 31, 2016 | Dec. 31, 2016
Impaired loans |  |  |
Unpaid Contractual Principal Balance | $ 9,239 |  | $ 6,674
Recorded Investment With Allowance | 4,827 |  | 4,538
Recorded Investment With No Allowance | 3,728 |  | 1,847
Total Recorded Investment | 8,555 |  | 6,385
Related Allowance | 127 |  | 515
Average Recorded Investment | 9,197 | $ 2,333 |
Interest Income Recognized | 58 | 19 |
Commercial, financial, agricultural |  |  |
Impaired loans |  |  |
Unpaid Contractual Principal Balance | 567 |  | 732
Recorded Investment With Allowance | 121 |  | 487
Recorded Investment With No Allowance | 423 |  | 224
Total Recorded Investment | 544 |  | 711
Related Allowance | 18 |  | 310
Average Recorded Investment | 541 | 8 |
Interest Income Recognized | 2 | 0 |
Lease financing |  |  |
Impaired loans |  |  |
Unpaid Contractual Principal Balance | 0 |  | 0
Recorded Investment With Allowance | 0 |  | 0
Recorded Investment With No Allowance | 0 |  | 0
Total Recorded Investment | 0 |  | 0
Related Allowance | 0 |  | 0
Average Recorded Investment | 0 | 0 |
Interest Income Recognized | 0 | 0 |
Real estate – construction |  |  |
Impaired loans |  |  |
Unpaid Contractual Principal Balance | 0 |  | 147
Recorded Investment With Allowance | 0 |  | 145
Recorded Investment With No Allowance | 0 |  | 0
Total Recorded Investment | 0 |  | 145
Related Allowance | 0 |  | 0
Average Recorded Investment | 0 | 0 |
Interest Income Recognized | 0 | 0 |
Real estate – 1-4 family mortgage |  |  |
Impaired loans |  |  |
Unpaid Contractual Principal Balance | 5,463 |  | 3,095
Recorded Investment With Allowance | 1,746 |  | 1,496
Recorded Investment With No Allowance | 3,114 |  | 1,385
Total Recorded Investment | 4,860 |  | 2,881
Related Allowance | 54 |  | 43
Average Recorded Investment | 5,481 | 810 |
Interest Income Recognized | 21 | 9 |
Real estate – commercial mortgage |  |  |
Impaired loans |  |  |
Unpaid Contractual Principal Balance | 3,108 |  | 2,485
Recorded Investment With Allowance | 2,898 |  | 2,275
Recorded Investment With No Allowance | 178 |  | 183
Total Recorded Investment | 3,076 |  | 2,458
Related Allowance | 52 |  | 48
Average Recorded Investment | 3,090 | 1,515 |
Interest Income Recognized | 35 | 10 |
Installment loans to individuals |  |  |
Impaired loans |  |  |
Unpaid Contractual Principal Balance | 101 |  | 215
Recorded Investment With Allowance | 62 |  | 135
Recorded Investment With No Allowance | 13 |  | 55
Total Recorded Investment | 75 |  | 190
Related Allowance | 3 |  | 114
Average Recorded Investment | 85 | 0 |
Interest Income Recognized | 0 | 0 |
Receivables Acquired with Deteriorated Credit Quality |  |  |
Impaired loans |  |  |
Unpaid Contractual Principal Balance | 318,296 |  | 340,104
Recorded Investment With Allowance | 85,974 |  | 89,257
Recorded Investment With No Allowance | 169,765 |  | 182,501
Total Recorded Investment | 255,739 |  | 271,758
Related Allowance | 2,719 |  | 2,820
Average Recorded Investment | 291,340 | 374,716 |
Interest Income Recognized | 3,452 | 4,165 |
Receivables Acquired with Deteriorated Credit Quality | Commercial, financial, agricultural |  |  |
Impaired loans |  |  |
Unpaid Contractual Principal Balance | 21,357 |  | 20,697
Recorded Investment With Allowance | 6,451 |  | 4,555
Recorded Investment With No Allowance | 6,577 |  | 7,439
Total Recorded Investment | 13,028 |  | 11,994
Related Allowance | 378 |  | 372
Average Recorded Investment | 14,088 | 18,024 |
Interest Income Recognized | 247 | 327 |
Receivables Acquired with Deteriorated Credit Quality | Lease financing |  |  |
Impaired loans |  |  |
Unpaid Contractual Principal Balance | 0 |  | 0
Recorded Investment With Allowance | 0 |  | 0
Recorded Investment With No Allowance | 0 |  | 0
Total Recorded Investment | 0 |  | 0
Related Allowance | 0 |  | 0
Average Recorded Investment | 0 | 0 |
Interest Income Recognized | 0 | 0 |
Receivables Acquired with Deteriorated Credit Quality | Real estate – construction |  |  |
Impaired loans |  |  |
Unpaid Contractual Principal Balance | 0 |  | 1,141
Recorded Investment With Allowance | 0 |  | 0
Recorded Investment With No Allowance | 0 |  | 840
Total Recorded Investment | 0 |  | 840
Related Allowance |  |  | 0
Average Recorded Investment | 0 | 2,608 |
Interest Income Recognized | 0 | 25 |
Receivables Acquired with Deteriorated Credit Quality | Real estate – 1-4 family mortgage |  |  |
Impaired loans |  |  |
Unpaid Contractual Principal Balance | 80,398 |  | 86,725
Recorded Investment With Allowance | 20,725 |  | 21,887
Recorded Investment With No Allowance | 47,340 |  | 50,065
Total Recorded Investment | 68,065 |  | 71,952
Related Allowance | 767 |  | 841
Average Recorded Investment | 78,341 | 101,089 |
Interest Income Recognized | 865 | 953 |
Receivables Acquired with Deteriorated Credit Quality | Real estate – commercial mortgage |  |  |
Impaired loans |  |  |
Unpaid Contractual Principal Balance | 214,450 |  | 229,075
Recorded Investment With Allowance | 58,271 |  | 62,449
Recorded Investment With No Allowance | 114,448 |  | 122,538
Total Recorded Investment | 172,719 |  | 184,987
Related Allowance | 1,573 |  | 1,606
Average Recorded Investment | 196,807 | 250,041 |
Interest Income Recognized | 2,319 | 2,831 |
Receivables Acquired with Deteriorated Credit Quality | Installment loans to individuals |  |  |
Impaired loans |  |  |
Unpaid Contractual Principal Balance | 2,091 |  | 2,466
Recorded Investment With Allowance | 527 |  | 366
Recorded Investment With No Allowance | 1,400 |  | 1,619
Total Recorded Investment | 1,927 |  | 1,985
Related Allowance | 1 |  | $ 1
Average Recorded Investment | 2,104 | 2,954 |
Interest Income Recognized | $ 21 | $ 29 |

X
- Definition Average 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 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5258-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of interest income recognized on a cash-basis method of accounting that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired. + 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 (c)(3) -URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableInterestIncomeCashBasisMethod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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=66008989&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 -Glossary Recorded Investment -URI http://asc.fasb.org/extlink&oid=65880944 Reference 2: 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=66008989&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=66008989&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=66008989&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=66008989&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_LoanPortfolioPurchasedMember
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: |

X
- Details
Name: | us-gaap_ReceivablesAcquiredWithDeterioratedCreditQualityAxis=us-gaap_ReceivablesAcquiredWithDeterioratedCreditQualityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |