$RNST
RENASANT CORP Stock $rnst

$rnst Overview Financials Valuation SEC Filings Company Website

2018 Q4 Form 10-K Financial Statement

#000071507220000046 Filed on February 27, 2020

Income Statement

Concept	2018 Q4	2018 Q3	2018 Q2
Revenue	$137.1M	$117.8M	$106.6M
YoY Change	31.09%	16.98%	21.69%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	-$200.0K	$1.800M	$1.200M
YoY Change	-115.38%	100.0%	-45.45%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$21.65M	$18.36M	$14.19M
YoY Change	91.15%	71.9%	77.85%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$57.52M	$40.50M	$47.13M
YoY Change	23.05%	-0.31%	26.44%
Income Tax	$13.10M	$8.532M	$10.42M
% Of Pretax Income	22.77%	21.07%	22.12%
Net Earnings	$44.42M	$31.96M	$36.71M
YoY Change	169.03%	20.98%	45.19%
Net Earnings / Revenue	32.4%	27.14%	34.45%
Basic Earnings Per Share	$0.76	$0.61	$0.74
Diluted Earnings Per Share	$0.76	$0.61	$0.74
COMMON SHARES
Basic Shares Outstanding	58.71M shares	52.47M shares	49.41M shares
Diluted Shares Outstanding		52.61M shares	49.55M shares

Balance Sheet

Concept	2018 Q4	2018 Q3	2018 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$569.1M	$369.6M	$293.0M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment	$209.2M	$206.8M	$186.6M
YoY Change	14.14%	10.76%	4.65%
Goodwill	$932.9M	$927.3M	$611.0M
YoY Change	52.68%	51.75%	29.86%
Intangibles	$44.87M	$46.85M	$21.27M
YoY Change	83.05%	78.71%	1.18%
Long-Term Investments	$6.000M	$6.000M	$7.000M
YoY Change
Other Assets
YoY Change
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$12.93B	$12.75B	$10.54B
YoY Change	31.59%	23.47%	18.85%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$387.7M	$175.6M	$313.4M
YoY Change	331.68%	-54.31%	160.9%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$8.000M	$46.00M	$8.000M
YoY Change	14.29%	-88.02%	-93.33%
LONG-TERM LIABILITIES
Long-Term Debt	$257.0M	$257.0M	$200.0M
YoY Change	28.5%	23.56%	4.17%
Other Long-Term Liabilities	$111.0M	$125.0M	$84.00M
YoY Change	14.43%	23.76%	-2.33%
Total Long-Term Liabilities	$368.0M	$382.0M	$284.0M
YoY Change	23.91%	23.62%	2.16%
TOTAL LIABILITIES
Total Short-Term Liabilities	$8.000M	$46.00M	$8.000M
Total Long-Term Liabilities	$368.0M	$382.0M	$284.0M
Total Liabilities	$10.89B	$10.74B	$8.986B
YoY Change	30.98%	21.84%	18.23%
SHAREHOLDERS EQUITY
Retained Earnings	$500.7M	$468.6M	$448.5M
YoY Change	26.0%	20.71%	20.97%
Common Stock	$296.5M	$296.5M	$250.0M
YoY Change	18.62%	18.62%	10.83%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$24.25M	$17.23M	$17.52M
YoY Change	21.8%	-13.52%	-12.85%
Treasury Stock Shares	750.2K shares
Shareholders Equity	$2.044B	$2.011B	$1.559B
YoY Change
Total Liabilities & Shareholders Equity	$12.93B	$12.75B	$10.54B
YoY Change	31.59%	23.47%	18.85%

Cashflow Statement

Concept	2018 Q4	2018 Q3	2018 Q2
OPERATING ACTIVITIES
Net Income	$44.42M	$31.96M	$36.71M
YoY Change	169.03%	20.98%	45.19%
Depreciation, Depletion And Amortization	-$200.0K	$1.800M	$1.200M
YoY Change	-115.38%	100.0%	-45.45%
Cash From Operating Activities	$80.10M	$75.10M	-$11.90M
YoY Change	-48.19%	68.01%	-74.89%
INVESTING ACTIVITIES
Capital Expenditures	-$6.800M	-$5.300M	-$5.900M
YoY Change	518.18%	26.19%	78.79%
Acquisitions
YoY Change
Other Investing Activities	-$23.80M	$113.0M	-$209.3M
YoY Change	-108.03%	-710.81%	33.14%
Cash From Investing Activities	-$30.60M	$107.7M	-$215.2M
YoY Change	-110.37%	-574.45%	34.08%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	150.0M	-106.3M	269.2M
YoY Change	-129.96%	-243.26%	267.76%
NET CHANGE
Cash From Operating Activities	80.10M	75.10M	-11.90M
Cash From Investing Activities	-30.60M	107.7M	-215.2M
Cash From Financing Activities	150.0M	-106.3M	269.2M
Net Change In Cash	199.5M	76.50M	42.10M
YoY Change	-492.72%	-20.48%	-131.25%
FREE CASH FLOW
Cash From Operating Activities	$80.10M	$75.10M	-$11.90M
Capital Expenditures	-$6.800M	-$5.300M	-$5.900M
Free Cash Flow	$86.90M	$80.40M	-$6.000M
YoY Change	-44.19%	64.42%	-86.39%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2019	dei	Amendment Flag AmendmentFlag	false
CY2019	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2019	dei	Document Annual Report DocumentAnnualReport	true
CY2019	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2019	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2019
CY2019	dei	Document Transition Report DocumentTransitionReport	false
CY2019	dei	Entity Central Index Key EntityCentralIndexKey	0000715072
CY2019Q4	rnst	Capital Requiredtobe Significantly Undercapitalizedto Risk Weighted Assets CapitalRequiredtobeSignificantlyUndercapitalizedtoRiskWeightedAssets	0.06
CY2019Q4	rnst	Capital Requiredtobe Undercapitalizedto Risk Weighted Assets CapitalRequiredtobeUndercapitalizedtoRiskWeightedAssets	0.08
CY2019Q4	rnst	Common Equity Tier One Leverage Capital Required For Capital Adequacy To Average Assets CommonEquityTierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.045
CY2019Q4	rnst	Common Equity Tier One Leverage Capital Required To Be Significantly Undercapitalizedto Average Assets CommonEquityTierOneLeverageCapitalRequiredToBeSignificantlyUndercapitalizedtoAverageAssets	0.03
CY2019Q4	rnst	Common Equity Tier One Leverage Capital Required To Be Undercapitalized To Average Assets CommonEquityTierOneLeverageCapitalRequiredToBeUndercapitalizedToAverageAssets	0.045
CY2019Q4	rnst	Common Equity Tier One Leverage Capital Required To Be Well Capitalized To Average Assets CommonEquityTierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets	0.065
CY2017	rnst	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Weighted Average Servicing Fee ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueWeightedAverageServicingFee	0.002636
CY2018	rnst	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Weighted Average Servicing Fee ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueWeightedAverageServicingFee	0.002747
CY2019	rnst	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Weighted Average Servicing Fee ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueWeightedAverageServicingFee	0.002920
CY2019Q4	rnst	Tangible Capital Requiredtobe Critically Undercapitalizedto Total Assets TangibleCapitalRequiredtobeCriticallyUndercapitalizedtoTotalAssets	0.02
CY2019Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	5
CY2018Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	150000000	shares
CY2019Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	150000000	shares
CY2018Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	59276725	shares
CY2019Q4	rnst	Tier One Leverage Capital Requiredtobe Significantly Undercapitalizedto Average Assets TierOneLeverageCapitalRequiredtobeSignificantlyUndercapitalizedtoAverageAssets	0.03
CY2019Q4	rnst	Tier One Leverage Capital Requiredtobe Undercapitalizedto Average Assets TierOneLeverageCapitalRequiredtobeUndercapitalizedtoAverageAssets	0.04
CY2019Q4	rnst	Tier One Risk Based Capital Requiredtobe Significantly Undercapitalizedto Risk Weighted Assets TierOneRiskBasedCapitalRequiredtobeSignificantlyUndercapitalizedtoRiskWeightedAssets	0.04
CY2019Q4	rnst	Tier One Risk Based Capital Requiredtobe Undercapitalizedto Risk Weighted Assets TierOneRiskBasedCapitalRequiredtobeUndercapitalizedtoRiskWeightedAssets	0.06
CY2019Q4	us-gaap	Capital Required For Capital Adequacy To Risk Weighted Assets CapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.08
CY2019Q4	us-gaap	Capital Required To Be Well Capitalized To Risk Weighted Assets CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.1
CY2018	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.80
CY2018Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	5
CY2018	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2018Q4	us-gaap	Line Of Credit LineOfCredit	0	USD
CY2017	us-gaap	Mortgage Servicing Rights Msr Impairment Recovery MortgageServicingRightsMSRImpairmentRecovery	0	USD
CY2019Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	59296725	shares
CY2018Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	58546480	shares
CY2019Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	56855022	shares
CY2018	us-gaap	Fair Value Assets And Liabilities Measured On Recurring Basis Gain Loss Included In Earnings FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisGainLossIncludedInEarnings	0	USD
CY2019Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2018Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2017	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2018Q4	us-gaap	Mortgages Held For Sale Fair Value Disclosure MortgagesHeldForSaleFairValueDisclosure	219848000	USD
CY2019Q4	us-gaap	Mortgages Held For Sale Fair Value Disclosure MortgagesHeldForSaleFairValueDisclosure	318272000	USD
CY2018Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2019Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2018Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2019Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2018Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2019Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2019Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy To Average Assets TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.04
CY2019Q4	us-gaap	Tier One Leverage Capital Required To Be Well Capitalized To Average Assets TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets	0.05
CY2019Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.06
CY2019Q4	us-gaap	Tier One Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets TierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.08
CY2018Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	750245	shares
CY2019Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	2441723	shares
CY2019	dei	Document Type DocumentType	10-K
CY2019	dei	Document Period End Date DocumentPeriodEndDate	2019-12-31
CY2019	dei	Entity File Number EntityFileNumber	001-13253
CY2019	dei	Entity Registrant Name EntityRegistrantName	RENASANT CORP
CY2019	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	MS
CY2019	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	64-0676974
CY2019	dei	Entity Address Address Line1 EntityAddressAddressLine1	209 Troy Street,
CY2019	dei	Entity Address City Or Town EntityAddressCityOrTown	Tupelo,
CY2019	dei	Entity Address State Or Province EntityAddressStateOrProvince	MS
CY2019	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	38804-4827
CY2019	dei	City Area Code CityAreaCode	662
CY2019	dei	Local Phone Number LocalPhoneNumber	680-1001
CY2019	dei	Security12b Title Security12bTitle	Common stock, $5.00 par value per share
CY2019	dei	Trading Symbol TradingSymbol	RNST
CY2019	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2019	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2019	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2019	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2019	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2019	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2019	dei	Entity Small Business EntitySmallBusiness	false
CY2019	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2019	dei	Entity Shell Company EntityShellCompany	false
CY2019Q2	dei	Entity Public Float EntityPublicFloat	2019319054	USD
CY2020Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	56562634	shares
CY2019Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	191065000	USD
CY2018Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	198515000	USD
CY2019Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	223865000	USD
CY2018Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	370596000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	414930000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	569111000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1290613000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1250777000	USD
CY2019Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	318272000	USD
CY2018Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	411427000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	9689638000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	9083129000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	52162000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	49026000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Net Reported Amount Covered And Not Covered LoansAndLeasesReceivableNetReportedAmountCoveredAndNotCovered	9637476000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Net Reported Amount Covered And Not Covered LoansAndLeasesReceivableNetReportedAmountCoveredAndNotCovered	9034103000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	309697000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	209168000	USD
CY2019Q4	rnst	Not Covered Under Loss Share Agreements Other Real Estate Owned And Repossessions NotCoveredUnderLossShareAgreementsOtherRealEstateOwnedAndRepossessions	2762000	USD
CY2018Q4	rnst	Not Covered Under Loss Share Agreements Other Real Estate Owned And Repossessions NotCoveredUnderLossShareAgreementsOtherRealEstateOwnedAndRepossessions	4853000	USD
CY2019Q4	rnst	Not Coveredunder Lossshare Agreements Other Real Estate Ownedand Repossessions Acquired NotCoveredunderLossshareAgreementsOtherRealEstateOwnedandRepossessionsAcquired	5248000	USD
CY2018Q4	rnst	Not Coveredunder Lossshare Agreements Other Real Estate Ownedand Repossessions Acquired NotCoveredunderLossshareAgreementsOtherRealEstateOwnedandRepossessionsAcquired	6187000	USD
CY2019Q4	us-gaap	Other Real Estate And Foreclosed Assets OtherRealEstateAndForeclosedAssets	8010000	USD
CY2018Q4	us-gaap	Other Real Estate And Foreclosed Assets OtherRealEstateAndForeclosedAssets	11040000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	939683000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	932928000	USD
CY2019Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	37260000	USD
CY2018Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	44865000	USD
CY2019Q4	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	225942000	USD
CY2018Q4	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	220608000	USD
CY2019Q4	us-gaap	Servicing Asset ServicingAsset	53208000	USD
CY2018Q4	us-gaap	Servicing Asset ServicingAsset	48230000	USD
CY2019Q4	us-gaap	Other Assets OtherAssets	165527000	USD
CY2018Q4	us-gaap	Other Assets OtherAssets	202621000	USD
CY2019Q4	us-gaap	Assets Assets	13400618000	USD
CY2018Q4	us-gaap	Assets Assets	12934878000	USD
CY2019Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	2551770000	USD
CY2018Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	2318706000	USD
CY2019Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	7661398000	USD
CY2018Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	7809851000	USD
CY2019Q4	us-gaap	Deposits Deposits	10213168000	USD
CY2018Q4	us-gaap	Deposits Deposits	10128557000	USD
CY2019Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	489091000	USD
CY2018Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	387706000	USD
CY2019Q4	us-gaap	Long Term Debt LongTermDebt	376507000	USD
CY2018Q4	us-gaap	Long Term Debt LongTermDebt	263618000	USD
CY2019Q4	us-gaap	Other Liabilities OtherLiabilities	196163000	USD
CY2018Q4	us-gaap	Other Liabilities OtherLiabilities	111084000	USD
CY2019Q4	us-gaap	Liabilities Liabilities	11274929000	USD
CY2018Q4	us-gaap	Liabilities Liabilities	10890965000	USD
CY2019Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2018Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2019Q4	us-gaap	Common Stock Value CommonStockValue	296483000	USD
CY2018Q4	us-gaap	Common Stock Value CommonStockValue	296483000	USD
CY2019Q4	us-gaap	Treasury Stock Value TreasuryStockValue	83189000	USD
CY2018Q4	us-gaap	Treasury Stock Value TreasuryStockValue	24245000	USD
CY2019Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	1294276000	USD
CY2018Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	1288911000	USD
CY2019Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	617355000	USD
CY2018Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	500660000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	764000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-17896000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	2125689000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	2043913000	USD
CY2019Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	13400618000	USD
CY2018Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	12934878000	USD
CY2019	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	501336000	USD
CY2018	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	428374000	USD
CY2017	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	344472000	USD
CY2019	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	29875000	USD
CY2018	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	23948000	USD
CY2017	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	18531000	USD
CY2019	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	5477000	USD
CY2018	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	6456000	USD
CY2017	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	9433000	USD
CY2019	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	5892000	USD
CY2018	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	3076000	USD
CY2017	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	2314000	USD
CY2019	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	542580000	USD
CY2018	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	461854000	USD
CY2017	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	374750000	USD
CY2019	us-gaap	Interest Expense Deposits InterestExpenseDeposits	81995000	USD
CY2018	us-gaap	Interest Expense Deposits InterestExpenseDeposits	49760000	USD
CY2017	us-gaap	Interest Expense Deposits InterestExpenseDeposits	24620000	USD
CY2019	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	16928000	USD
CY2018	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	15569000	USD
CY2017	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	13233000	USD
CY2019	us-gaap	Interest Expense InterestExpense	98923000	USD
CY2018	us-gaap	Interest Expense InterestExpense	65329000	USD
CY2017	us-gaap	Interest Expense InterestExpense	37853000	USD
CY2019	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	443657000	USD
CY2018	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	396525000	USD
CY2017	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	336897000	USD
CY2019	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	7050000	USD
CY2018	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	6810000	USD
CY2017	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	7550000	USD
CY2019	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	436607000	USD
CY2018	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	389715000	USD
CY2017	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	329347000	USD
CY2019	rnst	Feesand Commissions Depositor Accounts1 FeesandCommissionsDepositorAccounts1	35972000	USD
CY2018	rnst	Feesand Commissions Depositor Accounts1 FeesandCommissionsDepositorAccounts1	34660000	USD
CY2017	rnst	Feesand Commissions Depositor Accounts1 FeesandCommissionsDepositorAccounts1	33224000	USD
CY2019	rnst	Feesand Commissions1 FeesandCommissions1	19430000	USD
CY2018	rnst	Feesand Commissions1 FeesandCommissions1	23868000	USD
CY2017	rnst	Feesand Commissions1 FeesandCommissions1	21934000	USD
CY2019	us-gaap	Insurance Commissions And Fees InsuranceCommissionsAndFees	8919000	USD
CY2018	us-gaap	Insurance Commissions And Fees InsuranceCommissionsAndFees	8590000	USD
CY2017	us-gaap	Insurance Commissions And Fees InsuranceCommissionsAndFees	8361000	USD
CY2019	rnst	Feesand Commissions Fiduciaryand Trust Activities1 FeesandCommissionsFiduciaryandTrustActivities1	14433000	USD
CY2018	rnst	Feesand Commissions Fiduciaryand Trust Activities1 FeesandCommissionsFiduciaryandTrustActivities1	13540000	USD
CY2017	rnst	Feesand Commissions Fiduciaryand Trust Activities1 FeesandCommissionsFiduciaryandTrustActivities1	11884000	USD
CY2019	rnst	Feesand Commissions Mortgage Banking1 FeesandCommissionsMortgageBanking1	57896000	USD
CY2018	rnst	Feesand Commissions Mortgage Banking1 FeesandCommissionsMortgageBanking1	50142000	USD
CY2017	rnst	Feesand Commissions Mortgage Banking1 FeesandCommissionsMortgageBanking1	43415000	USD
CY2019	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	348000	USD
CY2018	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	-16000	USD
CY2017	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	148000	USD
CY2019	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	6109000	USD
CY2018	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	4644000	USD
CY2017	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	4353000	USD
CY2019	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	10147000	USD
CY2018	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	8533000	USD
CY2017	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	8821000	USD
CY2019	us-gaap	Noninterest Income NoninterestIncome	153254000	USD
CY2018	us-gaap	Noninterest Income NoninterestIncome	143961000	USD
CY2017	us-gaap	Noninterest Income NoninterestIncome	132140000	USD
CY2019	us-gaap	Labor And Related Expense LaborAndRelatedExpense	250784000	USD
CY2018	us-gaap	Labor And Related Expense LaborAndRelatedExpense	214294000	USD
CY2017	us-gaap	Labor And Related Expense LaborAndRelatedExpense	184540000	USD
CY2019	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	19679000	USD
CY2018	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	18627000	USD
CY2017	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	16474000	USD
CY2019	us-gaap	Occupancy Net OccupancyNet	49553000	USD
CY2018	us-gaap	Occupancy Net OccupancyNet	42111000	USD
CY2017	us-gaap	Occupancy Net OccupancyNet	37756000	USD
CY2019	us-gaap	Foreclosed Real Estate Expense ForeclosedRealEstateExpense	2013000	USD
CY2018	us-gaap	Foreclosed Real Estate Expense ForeclosedRealEstateExpense	1892000	USD
CY2017	us-gaap	Foreclosed Real Estate Expense ForeclosedRealEstateExpense	2470000	USD
CY2019	us-gaap	Professional Fees ProfessionalFees	10166000	USD
CY2018	us-gaap	Professional Fees ProfessionalFees	8753000	USD
CY2017	us-gaap	Professional Fees ProfessionalFees	7150000	USD
CY2019	us-gaap	Advertising Expense AdvertisingExpense	11607000	USD
CY2018	us-gaap	Advertising Expense AdvertisingExpense	9464000	USD
CY2017	us-gaap	Advertising Expense AdvertisingExpense	8248000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	8105000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	7179000	USD
CY2017	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	6530000	USD
CY2019	us-gaap	Communication Communication	8858000	USD
CY2018	us-gaap	Communication Communication	8318000	USD
CY2017	us-gaap	Communication Communication	7578000	USD
CY2019	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	279000	USD
CY2018	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	14246000	USD
CY2017	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	10378000	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-54000	USD
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2017	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-205000	USD
CY2019	us-gaap	Other Noninterest Expense OtherNoninterestExpense	13076000	USD
CY2018	us-gaap	Other Noninterest Expense OtherNoninterestExpense	20145000	USD
CY2017	us-gaap	Other Noninterest Expense OtherNoninterestExpense	20289000	USD
CY2019	us-gaap	Noninterest Expense NoninterestExpense	374174000	USD
CY2018	us-gaap	Noninterest Expense NoninterestExpense	345029000	USD
CY2017	us-gaap	Noninterest Expense NoninterestExpense	301618000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	215687000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	188647000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	159869000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	48091000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	41727000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	67681000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	167596000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	146920000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	92188000	USD
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.89
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.80
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.97
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.88
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.79
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.96
CY2019	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.87
CY2018	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.80
CY2017	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.73
CY2019	us-gaap	Net Income Loss NetIncomeLoss	167596000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	146920000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	92188000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	18625000	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-8315000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-2218000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-1872000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-12000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	91000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Transfers From Held To Maturity To Available For Sale Securities Net Of Tax OtherComprehensiveIncomeLossTransfersFromHeldToMaturityToAvailableForSaleSecuritiesNetOfTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Loss Transfers From Held To Maturity To Available For Sale Securities Net Of Tax OtherComprehensiveIncomeLossTransfersFromHeldToMaturityToAvailableForSaleSecuritiesNetOfTax	0	USD
CY2017	us-gaap	Other Comprehensive Income Loss Transfers From Held To Maturity To Available For Sale Securities Net Of Tax OtherComprehensiveIncomeLossTransfersFromHeldToMaturityToAvailableForSaleSecuritiesNetOfTax	8108000	USD
CY2019	rnst	Amortization Of Unrealized Holding Gains On Securities Transferred To Held To Maturity Category AmortizationOfUnrealizedHoldingGainsOnSecuritiesTransferredToHeldToMaturityCategory	0	USD
CY2018	rnst	Amortization Of Unrealized Holding Gains On Securities Transferred To Held To Maturity Category AmortizationOfUnrealizedHoldingGainsOnSecuritiesTransferredToHeldToMaturityCategory	0	USD
CY2017	rnst	Amortization Of Unrealized Holding Gains On Securities Transferred To Held To Maturity Category AmortizationOfUnrealizedHoldingGainsOnSecuritiesTransferredToHeldToMaturityCategory	173000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	20497000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-8303000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	5626000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-2217000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	365000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	536000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-2217000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	365000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	536000	USD
CY2019	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	68000	USD
CY2018	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	308000	USD
CY2017	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	1028000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-312000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-245000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-249000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-380000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-553000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-1277000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	18660000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-7385000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	7439000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	186256000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	139535000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	99627000	USD
CY2016Q4	us-gaap	Stockholders Equity StockholdersEquity	1232883000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	92188000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	7439000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	99627000	USD
CY2017	rnst	Tax Cuts And Jobs Act Of2017 Reclassification From Aoci To Retained Earnings TaxCutsAndJobsActOf2017ReclassificationFromAociToRetainedEarnings	0	USD
CY2017	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	34416000	USD
CY2017	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	213590000	USD
CY2017	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-2190000	USD
CY2017	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Stock Options Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition	5293000	USD
CY2017	us-gaap	Stockholders Equity Other StockholdersEquityOther	-196000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	1514983000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	146920000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-7385000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	139535000	USD
CY2018	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	7062000	USD
CY2018	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	43614000	USD
CY2018	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	434519000	USD
CY2018	rnst	Stock Repurchased During Period Acquisition Related Sharebased Compensation Value StockRepurchasedDuringPeriodAcquisitionRelatedSharebasedCompensationValue	93000	USD
CY2018	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-1863000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Stock Options Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition	7251000	USD
CY2018	us-gaap	Stockholders Equity Other StockholdersEquityOther	-257000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	2043913000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	167596000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	18660000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	186256000	USD
CY2019	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	62944000	USD
CY2019	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	50901000	USD
CY2019	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-831000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Stock Options Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition	10196000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	2125689000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	167596000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	146920000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	92188000	USD
CY2019	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	7050000	USD
CY2018	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	6810000	USD
CY2017	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	7550000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	8185000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	3496000	USD
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	4832000	USD
CY2019	rnst	Deferred Income Tax Expense Benefit Excluding Revaluation Dueto Changein Tax Law DeferredIncomeTaxExpenseBenefitExcludingRevaluationDuetoChangeinTaxLaw	20041000	USD
CY2018	rnst	Deferred Income Tax Expense Benefit Excluding Revaluation Dueto Changein Tax Law DeferredIncomeTaxExpenseBenefitExcludingRevaluationDuetoChangeinTaxLaw	16444000	USD
CY2017	rnst	Deferred Income Tax Expense Benefit Excluding Revaluation Dueto Changein Tax Law DeferredIncomeTaxExpenseBenefitExcludingRevaluationDuetoChangeinTaxLaw	23461000	USD
CY2019	rnst	Deferred Income Tax Expense Benefit Revaluationdueto Changesin Tax Law DeferredIncomeTaxExpenseBenefitRevaluationduetoChangesinTaxLaw	0	USD
CY2018	rnst	Deferred Income Tax Expense Benefit Revaluationdueto Changesin Tax Law DeferredIncomeTaxExpenseBenefitRevaluationduetoChangesinTaxLaw	0	USD
CY2017	rnst	Deferred Income Tax Expense Benefit Revaluationdueto Changesin Tax Law DeferredIncomeTaxExpenseBenefitRevaluationduetoChangesinTaxLaw	14486000	USD
CY2019	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	2381178000	USD
CY2018	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	1763246000	USD
CY2017	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	1683454000	USD
CY2019	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	2328607000	USD
CY2018	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	1698141000	USD
CY2017	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	1775450000	USD
CY2019	us-gaap	Gain Loss On Sale Of Mortgage Loans GainLossOnSaleOfMortgageLoans	45854000	USD
CY2018	us-gaap	Gain Loss On Sale Of Mortgage Loans GainLossOnSaleOfMortgageLoans	40318000	USD
CY2017	us-gaap	Gain Loss On Sale Of Mortgage Loans GainLossOnSaleOfMortgageLoans	19675000	USD
CY2019	us-gaap	Mortgage Servicing Rights Msr Impairment Recovery MortgageServicingRightsMSRImpairmentRecovery	1836000	USD
CY2018	us-gaap	Mortgage Servicing Rights Msr Impairment Recovery MortgageServicingRightsMSRImpairmentRecovery	0	USD
CY2017	us-gaap	Mortgage Servicing Rights Msr Impairment Recovery MortgageServicingRightsMSRImpairmentRecovery	0	USD
CY2019	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	348000	USD
CY2018	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	-16000	USD
CY2017	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	148000	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-54000	USD
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2017	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-205000	USD
CY2019	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	881000	USD
CY2018	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	198000	USD
CY2017	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-565000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	10196000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	7251000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	5293000	USD
CY2019	us-gaap	Proceeds From Sale Of Other Loans Held For Sale ProceedsFromSaleOfOtherLoansHeldForSale	59885000	USD
CY2018	us-gaap	Proceeds From Sale Of Other Loans Held For Sale ProceedsFromSaleOfOtherLoansHeldForSale	60599000	USD
CY2017	us-gaap	Proceeds From Sale Of Other Loans Held For Sale ProceedsFromSaleOfOtherLoansHeldForSale	0	USD
CY2019	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-683000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	11849000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	1139000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-12249000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-41954000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-12572000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	163623000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	82112000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	207042000	USD
CY2019	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	492018000	USD
CY2018	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	686887000	USD
CY2017	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	210190000	USD
CY2019	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	212485000	USD
CY2018	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	2387000	USD
CY2017	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	495340000	USD
CY2019	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	262287000	USD
CY2018	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	160703000	USD
CY2017	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	169445000	USD
CY2019	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	0	USD
CY2018	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	0	USD
CY2017	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	15882000	USD
CY2019	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	465182000	USD
CY2018	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	115208000	USD
CY2017	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	440205000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	34966000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	22360000	USD
CY2017	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	13047000	USD
CY2019	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	3728000	USD
CY2018	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	921000	USD
CY2017	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	2101000	USD
CY2019	us-gaap	Payments To Acquire Federal Home Loan Bank Stock PaymentsToAcquireFederalHomeLoanBankStock	11315000	USD
CY2018	us-gaap	Payments To Acquire Federal Home Loan Bank Stock PaymentsToAcquireFederalHomeLoanBankStock	4706000	USD
CY2017	us-gaap	Payments To Acquire Federal Home Loan Bank Stock PaymentsToAcquireFederalHomeLoanBankStock	5481000	USD
CY2019	us-gaap	Proceeds From Sale Of Other Assets Investing Activities ProceedsFromSaleOfOtherAssetsInvestingActivities	18404000	USD
CY2018	us-gaap	Proceeds From Sale Of Other Assets Investing Activities ProceedsFromSaleOfOtherAssetsInvestingActivities	8361000	USD
CY2017	us-gaap	Proceeds From Sale Of Other Assets Investing Activities ProceedsFromSaleOfOtherAssetsInvestingActivities	14131000	USD
CY2019	us-gaap	Payments For Previous Acquisition PaymentsForPreviousAcquisition	250000	USD
CY2018	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	153502000	USD
CY2017	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	41685000	USD
CY2019	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-917000	USD
CY2018	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	0	USD
CY2017	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	0	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-505910000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-503287000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	69661000	USD
CY2019	us-gaap	Net Change Noninterest Bearing Deposits Domestic NetChangeNoninterestBearingDepositsDomestic	233064000	USD
CY2018	us-gaap	Net Change Noninterest Bearing Deposits Domestic NetChangeNoninterestBearingDepositsDomestic	49087000	USD
CY2017	us-gaap	Net Change Noninterest Bearing Deposits Domestic NetChangeNoninterestBearingDepositsDomestic	11588000	USD
CY2019	us-gaap	Net Change Interest Bearing Deposits Domestic NetChangeInterestBearingDepositsDomestic	-147139000	USD
CY2018	us-gaap	Net Change Interest Bearing Deposits Domestic NetChangeInterestBearingDepositsDomestic	447317000	USD
CY2017	us-gaap	Net Change Interest Bearing Deposits Domestic NetChangeInterestBearingDepositsDomestic	-88717000	USD
CY2019	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	101385000	USD
CY2018	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	263753000	USD
CY2017	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-19862000	USD
CY2019	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	150000000	USD
CY2018	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2017	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2019	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	35359000	USD
CY2018	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	849000	USD
CY2017	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	170240000	USD
CY2019	us-gaap	Payments Of Dividends PaymentsOfDividends	50901000	USD
CY2018	us-gaap	Payments Of Dividends PaymentsOfDividends	43614000	USD
CY2017	us-gaap	Payments Of Dividends PaymentsOfDividends	34416000	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	62944000	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	7062000	USD
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2019	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	USD
CY2018	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	201000	USD
CY2017	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	173000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	188106000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	708833000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-301474000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-154181000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	287658000	USD
CY2017	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-24771000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	569111000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	281453000	USD
CY2016Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	306224000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	414930000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	569111000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	281453000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	98396000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	66706000	USD
CY2017	us-gaap	Interest Paid Net InterestPaidNet	36888000	USD
CY2019	us-gaap	Income Taxes Paid IncomeTaxesPaid	26727000	USD
CY2018	us-gaap	Income Taxes Paid IncomeTaxesPaid	24520000	USD
CY2017	us-gaap	Income Taxes Paid IncomeTaxesPaid	32556000	USD
CY2019	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	4764000	USD
CY2018	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	3826000	USD
CY2017	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	6699000	USD
CY2019	rnst	Real Estate Owned Financed Salesof Other Real Estate RealEstateOwnedFinancedSalesofOtherRealEstate	611000	USD
CY2018	rnst	Real Estate Owned Financed Salesof Other Real Estate RealEstateOwnedFinancedSalesofOtherRealEstate	531000	USD
CY2017	rnst	Real Estate Owned Financed Salesof Other Real Estate RealEstateOwnedFinancedSalesofOtherRealEstate	773000	USD
CY2019	us-gaap	Business Combination Consideration Transferred Equity Interests Issued And Issuable BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable	0	USD
CY2018	us-gaap	Business Combination Consideration Transferred Equity Interests Issued And Issuable BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable	434519000	USD
CY2017	us-gaap	Business Combination Consideration Transferred Equity Interests Issued And Issuable BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable	213590000	USD
CY2019	rnst	Recognitionof Operating Rightof Use Asset RecognitionofOperatingRightofUseAsset	91181000	USD
CY2019	rnst	Recognitionof Operating Rightof Use Liabilities RecognitionofOperatingRightofUseLiabilities	94700000	USD
CY2019	us-gaap	Nature Of Operations NatureOfOperations	<div style="line-height:120%;padding-bottom:12px;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;text-decoration:underline;">Nature of Operations</span><span style="font-family:inherit;font-size:10pt;">: Renasant Corporation (referred to herein as the “Company”) owns and operates Renasant Bank (“Renasant Bank” or the “Bank”) and Renasant Insurance, Inc. Through its subsidiaries, the Company offers a diversified range of financial, wealth management, fiduciary and insurance services to its retail and commercial customers from full service offices located throughout north and central Mississippi, Tennessee, Alabama, Georgia and Florida.</span></div>
CY2019	us-gaap	Use Of Estimates UseOfEstimates	<div style="line-height:120%;padding-bottom:12px;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;text-decoration:underline;">Use of Estimates</span><span style="font-family:inherit;font-size:10pt;">: The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”) requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates.</span></div>
CY2019	rnst	Number Of Days Past Due For Discontinued Recognition Of Interest On Mortgage And Commercial Loans NumberOfDaysPastDueForDiscontinuedRecognitionOfInterestOnMortgageAndCommercialLoans	P90D
CY2019	rnst	Number Of Days Past Due When Consumer And Other Retail Loans Charged Off NumberOfDaysPastDueWhenConsumerAndOtherRetailLoansChargedOff	P120D
CY2019	rnst	Restructured Loans Discontinued Past Due Period RestructuredLoansDiscontinuedPastDuePeriod	P90D
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2019	rnst	Lock In Period For Interest Rates LockInPeriodForInterestRates	P45D
CY2019Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	1276871000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	18620000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	4878000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1290613000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	1264529000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	4517000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	18269000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1250777000	USD
CY2019	rnst	Debt Securities Availablefor Sale Securities Soldat Carrying Value DebtSecuritiesAvailableforSaleSecuritiesSoldatCarryingValue	212137000	USD
CY2019	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	212485000	USD
CY2019	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	348000	USD
CY2018	rnst	Debt Securities Availablefor Sale Securities Soldat Carrying Value DebtSecuritiesAvailableforSaleSecuritiesSoldatCarryingValue	2403000	USD
CY2018	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	2387000	USD
CY2018	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	-16000	USD
CY2017	rnst	Debt Securities Availablefor Sale Securities Soldat Carrying Value DebtSecuritiesAvailableforSaleSecuritiesSoldatCarryingValue	495192000	USD
CY2017	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	495340000	USD
CY2017	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	148000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	5163000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions	171	security
CY2019	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	2979000	USD
CY2018	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	11000	USD
CY2017	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	2497000	USD
CY2019	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	2631000	USD
CY2018	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	27000	USD
CY2017	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	2349000	USD
CY2019	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	348000	USD
CY2018	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	-16000	USD
CY2017	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	148000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	17132000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	17294000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	30969000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	31820000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	78892000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	81860000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	120038000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	118890000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	1276871000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1290613000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions	79	security
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	331023000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	2394000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions	22	security
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	33700000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	2484000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	101	security
CY2019Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	364723000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	4878000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions	168	security
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	509808000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	312698000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	13106000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	339	security
CY2018Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	822506000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	18269000	USD
CY2019	rnst	Number Of Securities Representing Interests In Tranches Of Trusts NumberOfSecuritiesRepresentingInterestsInTranchesOfTrusts	2	Tranche
CY2019	rnst	Number Of Institutions Issuing Debt NumberOfInstitutionsIssuingDebt	148	institution
CY2018Q4	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	261000	USD
CY2017Q4	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	261000	USD
CY2019	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions No Previous Impairment OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsNoPreviousImpairment	0	USD
CY2018	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions No Previous Impairment OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsNoPreviousImpairment	0	USD
CY2019	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions Additional Credit Losses OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsAdditionalCreditLosses	0	USD
CY2018	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions Additional Credit Losses OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsAdditionalCreditLosses	0	USD
CY2019	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Securities Sold OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsSecuritiesSold	0	USD
CY2018	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Securities Sold OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsSecuritiesSold	0	USD
CY2019Q4	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	261000	USD
CY2018Q4	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	261000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	9693463000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	9086256000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	3825000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	3127000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	9689638000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	9083129000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	52162000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	49026000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Net Reported Amount Covered And Not Covered LoansAndLeasesReceivableNetReportedAmountCoveredAndNotCovered	9637476000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Net Reported Amount Covered And Not Covered LoansAndLeasesReceivableNetReportedAmountCoveredAndNotCovered	9034103000	USD
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	49026000	USD
CY2019	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	13478000	USD
CY2019	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	9564000	USD
CY2019	us-gaap	Financing Receivable Allowance For Credit Losses Period Increase Decrease FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease	-3914000	USD
CY2019	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	7050000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	52162000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	2012000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	48179000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	52162000	USD
CY2017Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	46211000	USD
CY2018	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	6428000	USD
CY2018	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	2433000	USD
CY2018	us-gaap	Financing Receivable Allowance For Credit Losses Period Increase Decrease FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease	-3995000	USD
CY2018	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	6810000	USD
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	49026000	USD
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	1514000	USD
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	44960000	USD
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	49026000	USD
CY2016Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	42737000	USD
CY2017	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	7008000	USD
CY2017	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	2932000	USD
CY2017	us-gaap	Financing Receivable Allowance For Credit Losses Period Increase Decrease FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease	-4076000	USD
CY2017	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	7550000	USD
CY2017Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	46211000	USD
CY2017Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	2674000	USD
CY2017Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	41760000	USD
CY2017Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	46211000	USD
CY2019Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	51179000	USD
CY2019Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	9466195000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	9689638000	USD
CY2018Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	35278000	USD
CY2018Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	8825597000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	9083129000	USD
CY2019Q4	rnst	Operating Lease Right Of Use Asset Before Accumulated Amortization OperatingLeaseRightOfUseAssetBeforeAccumulatedAmortization	84754000	USD
CY2019Q4	rnst	Property Plantand Equipmentand Operating Lease Rightof Use Assetbefore Accumulated Depreciationand Amortization PropertyPlantandEquipmentandOperatingLeaseRightofUseAssetbeforeAccumulatedDepreciationandAmortization	418270000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	302152000	USD
CY2019Q4	rnst	Property Plantand Equipmentand Operating Lease Rightof Use Asset Accumulated Depreciationand Amortization PropertyPlantandEquipmentandOperatingLeaseRightofUseAssetAccumulatedDepreciationandAmortization	108573000	USD
CY2018Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	92984000	USD
CY2019Q4	rnst	Property Plantand Equipmentand Operating Lease Rightof Use Assetafter Accumulated Depreciationand Amortization PropertyPlantandEquipmentandOperatingLeaseRightofUseAssetafterAccumulatedDepreciationandAmortization	309697000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	209168000	USD
CY2019	us-gaap	Depreciation Depreciation	16379000	USD
CY2018	us-gaap	Depreciation Depreciation	14358000	USD
CY2017	us-gaap	Depreciation Depreciation	13136000	USD
CY2019Q4	rnst	Covered Under Loss Share Agreements Other Real Estate Owned And Repossessions CoveredUnderLossShareAgreementsOtherRealEstateOwnedAndRepossessions	5248000	USD
CY2019Q4	rnst	Not Covered Under Loss Share Agreements Other Real Estate Owned And Repossessions NotCoveredUnderLossShareAgreementsOtherRealEstateOwnedAndRepossessions	2762000	USD
CY2019Q4	us-gaap	Other Real Estate And Foreclosed Assets OtherRealEstateAndForeclosedAssets	8010000	USD
CY2018Q4	rnst	Covered Under Loss Share Agreements Other Real Estate Owned And Repossessions CoveredUnderLossShareAgreementsOtherRealEstateOwnedAndRepossessions	6187000	USD
CY2018Q4	rnst	Not Covered Under Loss Share Agreements Other Real Estate Owned And Repossessions NotCoveredUnderLossShareAgreementsOtherRealEstateOwnedAndRepossessions	4853000	USD
CY2018Q4	us-gaap	Other Real Estate And Foreclosed Assets OtherRealEstateAndForeclosedAssets	11040000	USD
CY2017Q4	us-gaap	Other Real Estate Covered OtherRealEstateCovered	11524000	USD
CY2017Q4	us-gaap	Other Real Estate Non Covered OtherRealEstateNonCovered	4410000	USD
CY2017Q4	us-gaap	Other Real Estate OtherRealEstate	15934000	USD
CY2018	rnst	Other Real Estate Covered Transfers Of Loans OtherRealEstateCoveredTransfersOfLoans	906000	USD
CY2018	rnst	Other Real Estate Not Covered Transfers Of Loans OtherRealEstateNotCoveredTransfersOfLoans	2920000	USD
CY2018	rnst	Other Real Estate Transfers Of Loans OtherRealEstateTransfersOfLoans	3826000	USD
CY2018	us-gaap	Other Real Estate Covered Valuation Adjustments OtherRealEstateCoveredValuationAdjustments	1021000	USD
CY2018	us-gaap	Other Real Estate Non Covered Valuation Adjustments OtherRealEstateNonCoveredValuationAdjustments	524000	USD
CY2018	us-gaap	Other Real Estate Valuation Adjustments OtherRealEstateValuationAdjustments	1545000	USD
CY2018	us-gaap	Other Real Estate Covered Disposals OtherRealEstateCoveredDisposals	5220000	USD
CY2018	us-gaap	Other Real Estate Non Covered Disposals OtherRealEstateNonCoveredDisposals	1907000	USD
CY2018	us-gaap	Other Real Estate Disposals OtherRealEstateDisposals	7127000	USD
CY2018	us-gaap	Other Real Estate Covered Period Increase Decrease OtherRealEstateCoveredPeriodIncreaseDecrease	-2000	USD
CY2018	us-gaap	Other Real Estate Non Covered Period Increase Decrease OtherRealEstateNonCoveredPeriodIncreaseDecrease	-46000	USD
CY2018	us-gaap	Other Real Estate Period Increase Decrease OtherRealEstatePeriodIncreaseDecrease	-48000	USD
CY2018Q4	us-gaap	Other Real Estate Covered OtherRealEstateCovered	6187000	USD
CY2018Q4	us-gaap	Other Real Estate Non Covered OtherRealEstateNonCovered	4853000	USD
CY2018Q4	us-gaap	Other Real Estate OtherRealEstate	11040000	USD
CY2019	rnst	Other Real Estate Covered Transfers Of Loans OtherRealEstateCoveredTransfersOfLoans	2287000	USD
CY2019	rnst	Other Real Estate Not Covered Transfers Of Loans OtherRealEstateNotCoveredTransfersOfLoans	2477000	USD
CY2019	rnst	Other Real Estate Transfers Of Loans OtherRealEstateTransfersOfLoans	4764000	USD
CY2019	us-gaap	Other Real Estate Covered Valuation Adjustments OtherRealEstateCoveredValuationAdjustments	890000	USD
CY2019	us-gaap	Other Real Estate Non Covered Valuation Adjustments OtherRealEstateNonCoveredValuationAdjustments	375000	USD
CY2019	us-gaap	Other Real Estate Valuation Adjustments OtherRealEstateValuationAdjustments	1265000	USD
CY2019	us-gaap	Other Real Estate Covered Disposals OtherRealEstateCoveredDisposals	2305000	USD
CY2019	us-gaap	Other Real Estate Non Covered Disposals OtherRealEstateNonCoveredDisposals	4193000	USD
CY2019	us-gaap	Other Real Estate Disposals OtherRealEstateDisposals	6498000	USD
CY2019	us-gaap	Other Real Estate Covered Period Increase Decrease OtherRealEstateCoveredPeriodIncreaseDecrease	-31000	USD
CY2019	us-gaap	Other Real Estate Non Covered Period Increase Decrease OtherRealEstateNonCoveredPeriodIncreaseDecrease	0	USD
CY2019	us-gaap	Other Real Estate Period Increase Decrease OtherRealEstatePeriodIncreaseDecrease	-31000	USD
CY2019Q4	us-gaap	Other Real Estate Covered OtherRealEstateCovered	5248000	USD
CY2019Q4	us-gaap	Other Real Estate Non Covered OtherRealEstateNonCovered	2762000	USD
CY2019Q4	us-gaap	Other Real Estate OtherRealEstate	8010000	USD
CY2019	us-gaap	Cost Of Property Repairs And Maintenance CostOfPropertyRepairsAndMaintenance	326000	USD
CY2018	us-gaap	Cost Of Property Repairs And Maintenance CostOfPropertyRepairsAndMaintenance	425000	USD
CY2017	us-gaap	Cost Of Property Repairs And Maintenance CostOfPropertyRepairsAndMaintenance	728000	USD
CY2019	us-gaap	Real Estate Taxes And Insurance RealEstateTaxesAndInsurance	343000	USD
CY2018	us-gaap	Real Estate Taxes And Insurance RealEstateTaxesAndInsurance	385000	USD
CY2017	us-gaap	Real Estate Taxes And Insurance RealEstateTaxesAndInsurance	423000	USD
CY2019	rnst	Other Real Estate Owned Impairments OtherRealEstateOwnedImpairments	1265000	USD
CY2018	rnst	Other Real Estate Owned Impairments OtherRealEstateOwnedImpairments	1545000	USD
CY2017	rnst	Other Real Estate Owned Impairments OtherRealEstateOwnedImpairments	1893000	USD
CY2019	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-94000	USD
CY2018	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	423000	USD
CY2017	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	405000	USD
CY2019	rnst	Other Real Estate Owned Rental Income OtherRealEstateOwnedRentalIncome	15000	USD
CY2018	rnst	Other Real Estate Owned Rental Income OtherRealEstateOwnedRentalIncome	40000	USD
CY2017	rnst	Other Real Estate Owned Rental Income OtherRealEstateOwnedRentalIncome	169000	USD
CY2019	us-gaap	Foreclosed Real Estate Expense ForeclosedRealEstateExpense	2013000	USD
CY2018	us-gaap	Foreclosed Real Estate Expense ForeclosedRealEstateExpense	1892000	USD
CY2017	us-gaap	Foreclosed Real Estate Expense ForeclosedRealEstateExpense	2470000	USD
CY2017Q4	us-gaap	Goodwill Goodwill	611046000	USD
CY2018	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	321882000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	932928000	USD
CY2019	us-gaap	Goodwill Transfers GoodwillTransfers	6755000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	939683000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	84962000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	47702000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	37260000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	84462000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	39597000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	44865000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	7121000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	6041000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	5121000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	4223000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	3679000	USD
CY2017Q4	us-gaap	Servicing Asset At Amortized Value ServicingAssetAtAmortizedValue	39339000	USD
CY2018	rnst	Capitalization Of Mortgage Servicing Rights CapitalizationOfMortgageServicingRights	13905000	USD
CY2018	us-gaap	Amortization Of Mortgage Servicing Rights Ms Rs AmortizationOfMortgageServicingRightsMSRs	5014000	USD
CY2018Q4	us-gaap	Servicing Asset At Amortized Value ServicingAssetAtAmortizedValue	48230000	USD
CY2019	rnst	Capitalization Of Mortgage Servicing Rights CapitalizationOfMortgageServicingRights	13823000	USD
CY2019	us-gaap	Amortization Of Mortgage Servicing Rights Ms Rs AmortizationOfMortgageServicingRightsMSRs	7009000	USD
CY2019	us-gaap	Servicing Asset At Amortized Value Valuation Allowance ServicingAssetAtAmortizedValueValuationAllowance	1836000	USD
CY2019Q4	us-gaap	Servicing Asset At Amortized Value ServicingAssetAtAmortizedValue	53208000	USD
CY2019	us-gaap	Mortgage Servicing Rights Msr Impairment Recovery MortgageServicingRightsMSRImpairmentRecovery	1836000	USD
CY2018	us-gaap	Mortgage Servicing Rights Msr Impairment Recovery MortgageServicingRightsMSRImpairmentRecovery	0	USD
CY2019Q4	rnst	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Unpaid Principle Balance ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueUnpaidPrincipleBalance	4871155000	USD
CY2018Q4	rnst	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Unpaid Principle Balance ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueUnpaidPrincipleBalance	4635712000	USD
CY2017Q4	rnst	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Unpaid Principle Balance ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueUnpaidPrincipleBalance	4012519000	USD
CY2019	us-gaap	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Prepayment Speed ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValuePrepaymentSpeed	0.1148
CY2018	us-gaap	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Prepayment Speed ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValuePrepaymentSpeed	0.0795
CY2017	us-gaap	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Prepayment Speed ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValuePrepaymentSpeed	0.0804
CY2019Q4	us-gaap	Sensitivity Analysis Of Fair Value Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities Impact Of10 Percent Adverse Change In Prepayment Speed SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactOf10PercentAdverseChangeInPrepaymentSpeed	2469000	USD
CY2018Q4	us-gaap	Sensitivity Analysis Of Fair Value Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities Impact Of10 Percent Adverse Change In Prepayment Speed SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactOf10PercentAdverseChangeInPrepaymentSpeed	1264000	USD
CY2017Q4	us-gaap	Sensitivity Analysis Of Fair Value Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities Impact Of10 Percent Adverse Change In Prepayment Speed SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactOf10PercentAdverseChangeInPrepaymentSpeed	1592000	USD
CY2019Q4	us-gaap	Sensitivity Analysis Of Fair Value Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities Impact Of20 Percent Adverse Change In Prepayment Speed SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactOf20PercentAdverseChangeInPrepaymentSpeed	4774000	USD
CY2018Q4	us-gaap	Sensitivity Analysis Of Fair Value Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities Impact Of20 Percent Adverse Change In Prepayment Speed SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactOf20PercentAdverseChangeInPrepaymentSpeed	2569000	USD
CY2017Q4	us-gaap	Sensitivity Analysis Of Fair Value Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities Impact Of20 Percent Adverse Change In Prepayment Speed SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactOf20PercentAdverseChangeInPrepaymentSpeed	3095000	USD
CY2019	us-gaap	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Discount Rate ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueDiscountRate	0.0969
CY2018	us-gaap	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Discount Rate ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueDiscountRate	0.0945
CY2017	us-gaap	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Discount Rate ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueDiscountRate	0.0969
CY2019Q4	us-gaap	Sensitivity Analysis Of Fair Value Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities Impact Of10 Percent Adverse Change In Discount Rate SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactOf10PercentAdverseChangeInDiscountRate	2027000	USD
CY2018Q4	us-gaap	Sensitivity Analysis Of Fair Value Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities Impact Of10 Percent Adverse Change In Discount Rate SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactOf10PercentAdverseChangeInDiscountRate	2657000	USD
CY2017Q4	us-gaap	Sensitivity Analysis Of Fair Value Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities Impact Of10 Percent Adverse Change In Discount Rate SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactOf10PercentAdverseChangeInDiscountRate	2027000	USD
CY2019Q4	us-gaap	Sensitivity Analysis Of Fair Value Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities Impact Of20 Percent Adverse Change In Discount Rate SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactOf20PercentAdverseChangeInDiscountRate	3908000	USD
CY2018Q4	us-gaap	Sensitivity Analysis Of Fair Value Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities Impact Of20 Percent Adverse Change In Discount Rate SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactOf20PercentAdverseChangeInDiscountRate	5103000	USD
CY2017Q4	us-gaap	Sensitivity Analysis Of Fair Value Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities Impact Of20 Percent Adverse Change In Discount Rate SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactOf20PercentAdverseChangeInDiscountRate	3896000	USD
CY2019	rnst	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Weighted Average Coupon Interest Rate ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueWeightedAverageCouponInterestRate	0.0404
CY2018	rnst	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Weighted Average Coupon Interest Rate ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueWeightedAverageCouponInterestRate	0.0404
CY2017	rnst	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Weighted Average Coupon Interest Rate ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueWeightedAverageCouponInterestRate	0.0389
CY2019	rnst	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Weighted Average Remaining Maturity ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueWeightedAverageRemainingMaturity	P6Y4M6D
CY2018	rnst	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Weighted Average Remaining Maturity ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueWeightedAverageRemainingMaturity	P8Y10D
CY2017	rnst	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Weighted Average Remaining Maturity ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueWeightedAverageRemainingMaturity	P7Y11M23D
CY2019Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	2551770000	USD
CY2018Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	2318706000	USD
CY2019Q4	us-gaap	Demand Deposit Accounts DemandDepositAccounts	4832945000	USD
CY2018Q4	us-gaap	Demand Deposit Accounts DemandDepositAccounts	4822382000	USD
CY2019Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	667821000	USD
CY2018Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	624685000	USD
CY2019Q4	us-gaap	Time Deposits TimeDeposits	2160632000	USD
CY2018Q4	us-gaap	Time Deposits TimeDeposits	2362784000	USD
CY2019Q4	us-gaap	Deposits Deposits	10213168000	USD
CY2018Q4	us-gaap	Deposits Deposits	10128557000	USD
CY2019Q4	us-gaap	Time Deposit Maturities Year One TimeDepositMaturitiesYearOne	1403585000	USD
CY2019Q4	us-gaap	Time Deposit Maturities Year Two TimeDepositMaturitiesYearTwo	460652000	USD
CY2019Q4	us-gaap	Time Deposit Maturities Year Three TimeDepositMaturitiesYearThree	253961000	USD
CY2019Q4	us-gaap	Time Deposit Maturities Year Four TimeDepositMaturitiesYearFour	21481000	USD
CY2019Q4	us-gaap	Time Deposit Maturities Year Five TimeDepositMaturitiesYearFive	17634000	USD
CY2019Q4	us-gaap	Time Deposit Maturities After Year Five TimeDepositMaturitiesAfterYearFive	3319000	USD
CY2019Q4	us-gaap	Time Deposits TimeDeposits	2160632000	USD
CY2019Q4	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	585717000	USD
CY2018Q4	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	549351000	USD
CY2019Q4	us-gaap	Related Party Deposit Liabilities RelatedPartyDepositLiabilities	33929000	USD
CY2018Q4	us-gaap	Related Party Deposit Liabilities RelatedPartyDepositLiabilities	44327000	USD
CY2019Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	489091000	USD
CY2018Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	387706000	USD
CY2019	us-gaap	Shortterm Debt Average Outstanding Amount ShorttermDebtAverageOutstandingAmount	123444000	USD
CY2018	us-gaap	Shortterm Debt Average Outstanding Amount ShorttermDebtAverageOutstandingAmount	155735000	USD
CY2017	us-gaap	Shortterm Debt Average Outstanding Amount ShorttermDebtAverageOutstandingAmount	217547000	USD
CY2019Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0243
CY2018Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0210
CY2017Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0122
CY2019Q4	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	150000000	USD
CY2019Q4	us-gaap	Line Of Credit LineOfCredit	0	USD
CY2019Q4	us-gaap	Long Term Debt LongTermDebt	376507000	USD
CY2018Q4	us-gaap	Long Term Debt LongTermDebt	263618000	USD
CY2019Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Amount Of Available Unused Funds FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresAmountOfAvailableUnusedFunds	3159942000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	4000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	140000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	484000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	0	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	0	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	375879000	USD
CY2019Q4	us-gaap	Long Term Debt LongTermDebt	376507000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	28020000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	24945000	USD
CY2019	rnst	Health Care Benefits Eligible Employee Retirement Agefrom Service Minimum HealthCareBenefitsEligibleEmployeeRetirementAgefromServiceMinimum	P55Y
CY2019	rnst	Health Care Benefits Eligible Employee Retirement Agefrom Service Maximum HealthCareBenefitsEligibleEmployeeRetirementAgefromServiceMaximum	P65Y
CY2019	rnst	Health Care Benefits Eligible Employee Years Of Service Minimum HealthCareBenefitsEligibleEmployeeYearsOfServiceMinimum	P15Y
CY2019	rnst	Health Care Benefits Eligible Employee Number Of Points Minimum HealthCareBenefitsEligibleEmployeeNumberOfPointsMinimum	70	point
CY2019	rnst	Minimum Eligible Agefor Medicare Coverage MinimumEligibleAgeforMedicareCoverage	P65Y
CY2019Q4	us-gaap	Defined Benefit Plan Expected Future Employer Contributions Next Fiscal Year DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear	155000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Ultimate Health Care Cost Trend Rate1 DefinedBenefitPlanUltimateHealthCareCostTrendRate1	0.048
CY2019	us-gaap	Fair Value Investments Entities That Calculate Net Asset Value Per Share Investment Redemption Notice Period1 FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareInvestmentRedemptionNoticePeriod1	P60D
CY2019Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	28585000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	25206000	USD
CY2019	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent DefinedContributionPlanEmployerMatchingContributionPercent	0.04
CY2019	rnst	Percentage Of Plan Compensation As Nondiscretionary Contribution PercentageOfPlanCompensationAsNondiscretionaryContribution	0.05
CY2019	rnst	Percentage Of Plan Compensation In Excess Of Social Security Wage Base PercentageOfPlanCompensationInExcessOfSocialSecurityWageBase	0.05
CY2019	rnst	Defined Contribution Plan Eligible Employee Numberof Hours Minimum DefinedContributionPlanEligibleEmployeeNumberofHoursMinimum	PT1000H
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	16009000	USD
CY2018	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	13477000	USD
CY2017	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	11471000	USD
CY2019	rnst	Deferred Compensation Arrangementwith Individual Numberof Plans DeferredCompensationArrangementwithIndividualNumberofPlans	2	plan
CY2019	us-gaap	Deferred Compensation Arrangement With Individual Compensation Expense DeferredCompensationArrangementWithIndividualCompensationExpense	3610000	USD
CY2018	us-gaap	Deferred Compensation Arrangement With Individual Compensation Expense DeferredCompensationArrangementWithIndividualCompensationExpense	1290000	USD
CY2017	us-gaap	Deferred Compensation Arrangement With Individual Compensation Expense DeferredCompensationArrangementWithIndividualCompensationExpense	1935000	USD
CY2007	rnst	Pensionand Other Postretirement Defined Benefit Plans Assumedin Acquisitions Numberof Officers Providedfor PensionandOtherPostretirementDefinedBenefitPlansAssumedinAcquisitionsNumberofOfficersProvidedfor	4	officer
CY2007	rnst	Pensionand Other Postretirement Defined Benefit Plans Benefits Expiration Period Subsequentto Retirement PensionandOtherPostretirementDefinedBenefitPlansBenefitsExpirationPeriodSubsequenttoRetirement	P15Y
CY2019Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Current And Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent	3921000	USD
CY2018Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Current And Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent	3865000	USD
CY2019	rnst	Incentive Compensation Plan Expense IncentiveCompensationPlanExpense	4200000	USD
CY2018	rnst	Incentive Compensation Plan Expense IncentiveCompensationPlanExpense	5117000	USD
CY2017	rnst	Incentive Compensation Plan Expense IncentiveCompensationPlanExpense	4490000	USD
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Expiration Period SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod	P10Y
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	185625	shares
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	15.97
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2017	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	0
CY2017	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	95875	shares
CY2017	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	16.25
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	0	shares
CY2017	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	0
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	89750	shares
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	15.67
CY2017	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P3Y1M20D
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	2263000	USD
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	89750	shares
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	15.67
CY2017	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P3Y1M20D
CY2017Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	2263000	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	0
CY2018	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	41000	shares
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	15.54
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	5000	shares
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	15.32
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	43750	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	15.84
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P2Y7M17D
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	627000	USD
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	43750	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	15.84
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P2Y7M17D
CY2018Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	627000	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	0
CY2019	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	14500	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	15.79
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	0	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	0
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	29250	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	15.86
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P1Y11M8D
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	574000	USD
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	29250	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	15.86
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P1Y11M8D
CY2019Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	574000	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	290000	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	1180000	USD
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	2487000	USD
CY2019Q4	us-gaap	Common Stock Capital Shares Reserved For Future Issuance CommonStockCapitalSharesReservedForFutureIssuance	1455971	shares
CY2019Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	61000	USD
CY2018Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	1620000	USD
CY2019Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	9974000	USD
CY2018Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	6768000	USD
CY2019Q4	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	0	USD
CY2018Q4	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	0	USD
CY2019Q4	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	0	USD
CY2018Q4	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	0	USD
CY2019Q4	us-gaap	Derivative Assets DerivativeAssets	61000	USD
CY2018Q4	us-gaap	Derivative Assets DerivativeAssets	1620000	USD
CY2019Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	9974000	USD
CY2018Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	6768000	USD
CY2019Q4	us-gaap	Derivative Asset Not Offset Policy Election Deduction DerivativeAssetNotOffsetPolicyElectionDeduction	61000	USD
CY2018Q4	us-gaap	Derivative Asset Not Offset Policy Election Deduction DerivativeAssetNotOffsetPolicyElectionDeduction	1620000	USD
CY2019Q4	us-gaap	Derivative Liability Not Offset Policy Election Deduction DerivativeLiabilityNotOffsetPolicyElectionDeduction	61000	USD
CY2018Q4	us-gaap	Derivative Liability Not Offset Policy Election Deduction DerivativeLiabilityNotOffsetPolicyElectionDeduction	1620000	USD
CY2019Q4	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	0	USD
CY2018Q4	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	0	USD
CY2019Q4	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	8698000	USD
CY2018Q4	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	2745000	USD
CY2019Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral	0	USD
CY2018Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral	0	USD
CY2019Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral	1215000	USD
CY2018Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral	2403000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	23786000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	1205000	USD
CY2018	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	1433000	USD
CY2017	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	3595000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	22658000	USD
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	28380000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	4264000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	2625000	USD
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1354000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	28050000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	25283000	USD
CY2017	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	29734000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	17331000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	13369000	USD
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	22314000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	2710000	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	3075000	USD
CY2017	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	1147000	USD
CY2019	rnst	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Change In Tax Rate Deferred Tax Asset Provisional Income Tax Expense Benefit TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetProvisionalIncomeTaxExpenseBenefit	0	USD
CY2018	rnst	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Change In Tax Rate Deferred Tax Asset Provisional Income Tax Expense Benefit TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetProvisionalIncomeTaxExpenseBenefit	0	USD
CY2017	rnst	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Change In Tax Rate Deferred Tax Asset Provisional Income Tax Expense Benefit TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetProvisionalIncomeTaxExpenseBenefit	14486000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	20041000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	16444000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	37947000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	48091000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	41727000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	67681000	USD
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	45294000	USD
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	39616000	USD
CY2017	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	55955000	USD
CY2019	rnst	Income Tax Reconciliation Bank Owned Life Insurance IncomeTaxReconciliationBankOwnedLifeInsurance	1283000	USD
CY2018	rnst	Income Tax Reconciliation Bank Owned Life Insurance IncomeTaxReconciliationBankOwnedLifeInsurance	975000	USD
CY2017	rnst	Income Tax Reconciliation Bank Owned Life Insurance IncomeTaxReconciliationBankOwnedLifeInsurance	1524000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	1863000	USD
CY2018	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	1863000	USD
CY2017	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	1591000	USD
CY2019	rnst	Income Tax Reconciliation Amortization Of Investment In Low Income Housing Tax Credits IncomeTaxReconciliationAmortizationOfInvestmentInLowIncomeHousingTaxCredits	1575000	USD
CY2018	rnst	Income Tax Reconciliation Amortization Of Investment In Low Income Housing Tax Credits IncomeTaxReconciliationAmortizationOfInvestmentInLowIncomeHousingTaxCredits	1592000	USD
CY2017	rnst	Income Tax Reconciliation Amortization Of Investment In Low Income Housing Tax Credits IncomeTaxReconciliationAmortizationOfInvestmentInLowIncomeHousingTaxCredits	1873000	USD
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	5509000	USD
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	4502000	USD
CY2017	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	1626000	USD
CY2019	rnst	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Change In Tax Rate Deferred Tax Asset Provisional Income Tax Expense Benefit TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetProvisionalIncomeTaxExpenseBenefit	0	USD
CY2018	rnst	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Change In Tax Rate Deferred Tax Asset Provisional Income Tax Expense Benefit TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetProvisionalIncomeTaxExpenseBenefit	0	USD
CY2017	rnst	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Change In Tax Rate Deferred Tax Asset Provisional Income Tax Expense Benefit TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetProvisionalIncomeTaxExpenseBenefit	14486000	USD
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	64000	USD
CY2018	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	288000	USD
CY2017	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	451000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	48091000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	41727000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	67681000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	14304000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	14097000	USD
CY2019Q4	rnst	Deferred Tax Assets Purchase Accounting Adjustments DeferredTaxAssetsPurchaseAccountingAdjustments	10284000	USD
CY2018Q4	rnst	Deferred Tax Assets Purchase Accounting Adjustments DeferredTaxAssetsPurchaseAccountingAdjustments	18655000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	12050000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	10001000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Availablefor Sale Securities Gross DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross	0	USD
CY2018Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Availablefor Sale Securities Gross DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross	6180000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Impairment Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsImpairmentLosses	1108000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Impairment Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsImpairmentLosses	1280000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	9387000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	19065000	USD
CY2019Q4	rnst	Deferred Tax Assets Lease Liabilities DeferredTaxAssetsLeaseLiabilities	22686000	USD
CY2018Q4	rnst	Deferred Tax Assets Lease Liabilities DeferredTaxAssetsLeaseLiabilities	0	USD
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	934000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	9800000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	70753000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	79078000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Unrealized Gains On Trading Securities DeferredTaxLiabilitiesUnrealizedGainsOnTradingSecurities	190000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Unrealized Gains On Trading Securities DeferredTaxLiabilitiesUnrealizedGainsOnTradingSecurities	0	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Investments DeferredTaxLiabilitiesInvestments	967000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Investments DeferredTaxLiabilitiesInvestments	1572000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	2952000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	3865000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Mortgage Servicing Rights DeferredTaxLiabilitiesMortgageServicingRights	13472000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Mortgage Servicing Rights DeferredTaxLiabilitiesMortgageServicingRights	12350000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Financing Arrangements DeferredTaxLiabilitiesFinancingArrangements	2304000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Financing Arrangements DeferredTaxLiabilitiesFinancingArrangements	1607000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	0	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	6190000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	21727000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	0	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	1859000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	1792000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	43471000	USD
CY2018Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	27376000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	27282000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	51702000	USD
CY2017	rnst	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Change In Tax Rate Deferred Tax Asset Provisional Income Tax Expense Benefit TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetProvisionalIncomeTaxExpenseBenefit	14486000	USD
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.2230
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.2212
CY2019Q4	us-gaap	Operating Loss Carryforwards Valuation Allowance OperatingLossCarryforwardsValuationAllowance	0	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1919000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1606000	USD
CY2016Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1510000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	158000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	313000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	467000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	1410000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2017	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2019	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	0	USD
CY2018	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	0	USD
CY2017	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	371000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	667000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1919000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1606000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	105000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	244000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	169000	USD
CY2019	us-gaap	Fair Value Assets And Liabilities Measured On Recurring Basis Gain Loss Included In Earnings FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisGainLossIncludedInEarnings	0	USD
CY2019Q4	rnst	Contractual Balance Impaired Loans Measured At Fair Value On Nonrecurring Basis ContractualBalanceImpairedLoansMeasuredAtFairValueOnNonrecurringBasis	29606000	USD
CY2018Q4	rnst	Contractual Balance Impaired Loans Measured At Fair Value On Nonrecurring Basis ContractualBalanceImpairedLoansMeasuredAtFairValueOnNonrecurringBasis	22621000	USD
CY2019	us-gaap	Mortgage Servicing Rights Msr Impairment Recovery MortgageServicingRightsMSRImpairmentRecovery	1836000	USD
CY2018	us-gaap	Mortgage Servicing Rights Msr Impairment Recovery MortgageServicingRightsMSRImpairmentRecovery	0	USD
CY2019	us-gaap	Fair Value Option Changes In Fair Value Gain Loss1 FairValueOptionChangesInFairValueGainLoss1	1286000	USD
CY2018	us-gaap	Fair Value Option Changes In Fair Value Gain Loss1 FairValueOptionChangesInFairValueGainLoss1	4892000	USD
CY2017	us-gaap	Fair Value Option Changes In Fair Value Gain Loss1 FairValueOptionChangesInFairValueGainLoss1	1594000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	25029000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	6369000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	18660000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-9908000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-2523000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-7385000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	11832000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	4393000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	7439000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	21563000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	1066000	USD
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	9369000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Other Than Temporary Impairment Not Credit Loss Net Of Tax Debt Securities AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxDebtSecurities	11319000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Other Than Temporary Impairment Not Credit Loss Net Of Tax Debt Securities AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxDebtSecurities	11319000	USD
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Other Than Temporary Impairment Not Credit Loss Net Of Tax Debt Securities AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxDebtSecurities	11319000	USD
CY2019Q4	us-gaap	Aoci Loss Cash Flow Hedge Cumulative Gain Loss After Tax AociLossCashFlowHedgeCumulativeGainLossAfterTax	-2847000	USD
CY2018Q4	us-gaap	Aoci Loss Cash Flow Hedge Cumulative Gain Loss After Tax AociLossCashFlowHedgeCumulativeGainLossAfterTax	-630000	USD
CY2017Q4	us-gaap	Aoci Loss Cash Flow Hedge Cumulative Gain Loss After Tax AociLossCashFlowHedgeCumulativeGainLossAfterTax	-995000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	6633000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	7013000	USD
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	7566000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	764000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-17896000	USD
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-10511000	USD
CY2019Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	137094000	USD
CY2019Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	137862000	USD
CY2019Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	134476000	USD
CY2019Q4	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	133148000	USD
CY2019Q1	us-gaap	Interest Expense InterestExpense	23947000	USD
CY2019Q2	us-gaap	Interest Expense InterestExpense	25062000	USD
CY2019Q3	us-gaap	Interest Expense InterestExpense	25651000	USD
CY2019Q4	us-gaap	Interest Expense InterestExpense	24263000	USD
CY2019Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	113147000	USD
CY2019Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	112800000	USD
CY2019Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	108825000	USD
CY2019Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	108885000	USD
CY2019Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	1500000	USD
CY2019Q2	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	900000	USD
CY2019Q3	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	1700000	USD
CY2019Q4	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	2950000	USD
CY2019Q1	us-gaap	Noninterest Income NoninterestIncome	35885000	USD
CY2019Q2	us-gaap	Noninterest Income NoninterestIncome	41960000	USD
CY2019Q3	us-gaap	Noninterest Income NoninterestIncome	37953000	USD
CY2019Q4	us-gaap	Noninterest Income NoninterestIncome	37456000	USD
CY2019Q1	us-gaap	Noninterest Expense NoninterestExpense	88832000	USD
CY2019Q2	us-gaap	Noninterest Expense NoninterestExpense	93290000	USD
CY2019Q3	us-gaap	Noninterest Expense NoninterestExpense	96500000	USD
CY2019Q4	us-gaap	Noninterest Expense NoninterestExpense	95552000	USD
CY2019Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	58700000	USD
CY2019Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	60570000	USD
CY2019Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	48578000	USD
CY2019Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	47839000	USD
CY2019Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	13590000	USD
CY2019Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	13945000	USD
CY2019Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	11132000	USD
CY2019Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	9424000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	45110000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	46625000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	37446000	USD
CY2019Q4	us-gaap	Net Income Loss NetIncomeLoss	38415000	USD
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.77
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.80
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.65
CY2019Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.67
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.77
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.80
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.64
CY2019Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.67
CY2018Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	100380000	USD
CY2018Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	106574000	USD
CY2018Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	117795000	USD
CY2018Q4	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	137105000	USD
CY2018Q1	us-gaap	Interest Expense InterestExpense	11140000	USD
CY2018Q2	us-gaap	Interest Expense InterestExpense	14185000	USD
CY2018Q3	us-gaap	Interest Expense InterestExpense	18356000	USD
CY2018Q4	us-gaap	Interest Expense InterestExpense	21648000	USD
CY2018Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	89240000	USD
CY2018Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	92389000	USD
CY2018Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	99439000	USD
CY2018Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	115457000	USD
CY2018Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	1750000	USD
CY2018Q2	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	1810000	USD
CY2018Q3	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	2250000	USD
CY2018Q4	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	1000000	USD
CY2018Q1	us-gaap	Noninterest Income NoninterestIncome	33953000	USD
CY2018Q2	us-gaap	Noninterest Income NoninterestIncome	35581000	USD
CY2018Q3	us-gaap	Noninterest Income NoninterestIncome	38053000	USD
CY2018Q4	us-gaap	Noninterest Income NoninterestIncome	36374000	USD
CY2018Q1	us-gaap	Noninterest Expense NoninterestExpense	77944000	USD
CY2018Q2	us-gaap	Noninterest Expense NoninterestExpense	79026000	USD
CY2018Q3	us-gaap	Noninterest Expense NoninterestExpense	94746000	USD
CY2018Q4	us-gaap	Noninterest Expense NoninterestExpense	93313000	USD
CY2018Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	43499000	USD
CY2018Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	47134000	USD
CY2018Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	40496000	USD
CY2018Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	57518000	USD
CY2018Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	9673000	USD
CY2018Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	10424000	USD
CY2018Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	8532000	USD
CY2018Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	13098000	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	33826000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	36710000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	31964000	USD
CY2018Q4	us-gaap	Net Income Loss NetIncomeLoss	44420000	USD
CY2018Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.69
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.74
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.61
CY2018Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.76
CY2018Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.68
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.74
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.61
CY2018Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.76
CY2019	us-gaap	Net Income Loss NetIncomeLoss	167596000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	146920000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	92188000	USD
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	58046716	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	52492104	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	46874502	shares
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.89
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.80
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.97
CY2019	us-gaap	Net Income Loss NetIncomeLoss	167596000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	146920000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	92188000	USD
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	58046716	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	52492104	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	46874502	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	179970	shares
CY2018	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	134746	shares
CY2017	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	127014	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	58226686	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	52626850	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	47001516	shares
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.88
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.79
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.96
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	643	shares
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	73257	shares
CY2017	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	77545	shares
CY2019Q4	rnst	Unfunded Loan UnfundedLoan	2324262000	USD
CY2019Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	94824000	USD
CY2018Q4	rnst	Unfunded Loan UnfundedLoan	2068749000	USD
CY2018Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	104664000	USD
CY2019Q4	rnst	Reserve Requirements With Federal Reserve ReserveRequirementsWithFederalReserve	187839000	USD
CY2018Q4	rnst	Reserve Requirements With Federal Reserve ReserveRequirementsWithFederalReserve	113341000	USD
CY2019Q4	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	31092000	USD
CY2018Q4	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	19777000	USD
CY2019Q4	rnst	Federal Home Loan Bank Stock Required Investment Amount FederalHomeLoanBankStockRequiredInvestmentAmount	31092000	USD
CY2018Q4	rnst	Federal Home Loan Bank Stock Required Investment Amount FederalHomeLoanBankStockRequiredInvestmentAmount	7471000	USD
CY2019Q4	rnst	Regulatory Restrictionson Paymentof Dividends Excess Surplus Ratio RegulatoryRestrictionsonPaymentofDividendsExcessSurplusRatio	10
CY2019Q4	rnst	Amount Transferable Loans Maximum AmountTransferableLoansMaximum	138862000	USD
CY2019Q4	rnst	Inter Company Borrowed Funds InterCompanyBorrowedFunds	0	USD
CY2019	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	443657000	USD
CY2019	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	7050000	USD
CY2019	us-gaap	Noninterest Income NoninterestIncome	153254000	USD
CY2019	us-gaap	Noninterest Expense NoninterestExpense	374174000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	215687000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	48091000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	167596000	USD
CY2019Q4	us-gaap	Assets Assets	13400618000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	939683000	USD
CY2018	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	396525000	USD
CY2018	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	6810000	USD
CY2018	us-gaap	Noninterest Income NoninterestIncome	143961000	USD
CY2018	us-gaap	Noninterest Expense NoninterestExpense	345029000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	188647000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	41727000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	146920000	USD
CY2018Q4	us-gaap	Assets Assets	12934878000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	932928000	USD
CY2017	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	336897000	USD
CY2017	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	7550000	USD
CY2017	us-gaap	Noninterest Income NoninterestIncome	132140000	USD
CY2017	us-gaap	Noninterest Expense NoninterestExpense	301618000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	159869000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	67681000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	92188000	USD
CY2017Q4	us-gaap	Assets Assets	9829981000	USD
CY2017Q4	us-gaap	Goodwill Goodwill	611046000	USD
CY2019Q4	us-gaap	Cash Collateral For Borrowed Securities CashCollateralForBorrowedSecurities	3840000	USD
CY2018Q4	us-gaap	Cash Collateral For Borrowed Securities CashCollateralForBorrowedSecurities	3737000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	9725000	USD
CY2019Q4	us-gaap	Net Investment In Lease NetInvestmentInLease	12441000	USD
CY2019Q4	us-gaap	Net Investment In Lease Current NetInvestmentInLeaseCurrent	10735000	USD
CY2019Q4	us-gaap	Residual Value Of Leased Asset ResidualValueOfLeasedAsset	2739000	USD
CY2019Q4	us-gaap	Net Investment In Lease Noncurrent NetInvestmentInLeaseNoncurrent	1033000	USD
CY2019	us-gaap	Lease Income LeaseIncome	331000	USD
CY2019Q4	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received Next Twelve Months SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedNextTwelveMonths	1011000	USD
CY2019Q4	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received Two Years SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedTwoYears	1314000	USD
CY2019Q4	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received Three Years SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedThreeYears	1989000	USD
CY2019Q4	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received Four Years SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedFourYears	3256000	USD
CY2019Q4	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received Five Years SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedFiveYears	1057000	USD
CY2019Q4	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received Thereafter SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedThereafter	3814000	USD
CY2019Q4	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceived	12441000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	84754000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	88494000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	10149000	USD
CY2019	us-gaap	Short Term Lease Cost ShortTermLeaseCost	67000	USD
CY2019	us-gaap	Variable Lease Cost VariableLeaseCost	1612000	USD
CY2019	us-gaap	Sublease Income SubleaseIncome	560000	USD
CY2019	us-gaap	Lease Cost LeaseCost	11268000	USD
CY2019	rnst	Operating Lease Payments Fixed OperatingLeasePaymentsFixed	9678000	USD
CY2019	rnst	Operating Lease Payments Liability Reduction OperatingLeasePaymentsLiabilityReduction	8407000	USD
CY2019	rnst	Operating Lease Weighted Average Remaining Lease Term Over The Period OperatingLeaseWeightedAverageRemainingLeaseTermOverThePeriod	P17Y4M20D
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0340
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	38881000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	8889000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	8420000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	8131000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	7549000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	78124000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	120838000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	32344000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	88494000	USD
CY2019	us-gaap	Operating Lease Expense OperatingLeaseExpense	9159	USD
CY2018	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	6157	USD
CY2017	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	4827	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	9389000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	8199000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	6339000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	4929000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	3711000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	12592000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	45159000	USD

Files In Submission

Name	View Source	Status
0000715072-20-000046-index-headers.html	Edgar Link	pending
0000715072-20-000046-index.html	Edgar Link	pending
0000715072-20-000046.txt	Edgar Link	pending
0000715072-20-000046-xbrl.zip	Edgar Link	pending
chart-cd6ee584b42f55dd95a.jpg	Edgar Link	pending
ex23horneconsent2019.htm	Edgar Link	pending
exhibit10xxxiiiamendme.htm	Edgar Link	pending
exhibit4viiitothe10-kx.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
kca17.jpg	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R100.htm	Edgar Link	pending
R101.htm	Edgar Link	pending
R102.htm	Edgar Link	pending
R103.htm	Edgar Link	pending
R104.htm	Edgar Link	pending
R105.htm	Edgar Link	pending
R106.htm	Edgar Link	pending
R107.htm	Edgar Link	pending
R108.htm	Edgar Link	pending
R109.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
R110.htm	Edgar Link	pending
R111.htm	Edgar Link	pending
R112.htm	Edgar Link	pending
R113.htm	Edgar Link	pending
R114.htm	Edgar Link	pending
R115.htm	Edgar Link	pending
R116.htm	Edgar Link	pending
R117.htm	Edgar Link	pending
R118.htm	Edgar Link	pending
R119.htm	Edgar Link	pending
R12.htm	Edgar Link	pending
R120.htm	Edgar Link	pending
R121.htm	Edgar Link	pending
R122.htm	Edgar Link	pending
R123.htm	Edgar Link	pending
R124.htm	Edgar Link	pending
R125.htm	Edgar Link	pending
R126.htm	Edgar Link	pending
R127.htm	Edgar Link	pending
R128.htm	Edgar Link	pending
R129.htm	Edgar Link	pending
R13.htm	Edgar Link	pending
R130.htm	Edgar Link	pending
R131.htm	Edgar Link	pending
R132.htm	Edgar Link	pending
R133.htm	Edgar Link	pending
R134.htm	Edgar Link	pending
R135.htm	Edgar Link	pending
R136.htm	Edgar Link	pending
R137.htm	Edgar Link	pending
R138.htm	Edgar Link	pending
R139.htm	Edgar Link	pending
R14.htm	Edgar Link	pending
R140.htm	Edgar Link	pending
R141.htm	Edgar Link	pending
R142.htm	Edgar Link	pending
R143.htm	Edgar Link	pending
R144.htm	Edgar Link	pending
R145.htm	Edgar Link	pending
R146.htm	Edgar Link	pending
R147.htm	Edgar Link	pending
R148.htm	Edgar Link	pending
R149.htm	Edgar Link	pending
R15.htm	Edgar Link	pending
R150.htm	Edgar Link	pending
R151.htm	Edgar Link	pending
R152.htm	Edgar Link	pending
R153.htm	Edgar Link	pending
R154.htm	Edgar Link	pending
R155.htm	Edgar Link	pending
R156.htm	Edgar Link	pending
R157.htm	Edgar Link	pending
R158.htm	Edgar Link	pending
R159.htm	Edgar Link	pending
R16.htm	Edgar Link	pending
R160.htm	Edgar Link	pending
R161.htm	Edgar Link	pending
R162.htm	Edgar Link	pending
R17.htm	Edgar Link	pending
R18.htm	Edgar Link	pending
R19.htm	Edgar Link	pending
R2.htm	Edgar Link	pending
R20.htm	Edgar Link	pending
R21.htm	Edgar Link	pending
R22.htm	Edgar Link	pending
R23.htm	Edgar Link	pending
R24.htm	Edgar Link	pending
R25.htm	Edgar Link	pending
R26.htm	Edgar Link	pending
R27.htm	Edgar Link	pending
R28.htm	Edgar Link	pending
R29.htm	Edgar Link	pending
R3.htm	Edgar Link	pending
R30.htm	Edgar Link	pending
R31.htm	Edgar Link	pending
R32.htm	Edgar Link	pending
R33.htm	Edgar Link	pending
R34.htm	Edgar Link	pending
R35.htm	Edgar Link	pending
R36.htm	Edgar Link	pending
R37.htm	Edgar Link	pending
R38.htm	Edgar Link	pending
R39.htm	Edgar Link	pending
R4.htm	Edgar Link	pending
R40.htm	Edgar Link	pending
R41.htm	Edgar Link	pending
R42.htm	Edgar Link	pending
R43.htm	Edgar Link	pending
R44.htm	Edgar Link	pending
R45.htm	Edgar Link	pending
R46.htm	Edgar Link	pending
R47.htm	Edgar Link	pending
R48.htm	Edgar Link	pending
R49.htm	Edgar Link	pending
R5.htm	Edgar Link	pending
R50.htm	Edgar Link	pending
R51.htm	Edgar Link	pending
R52.htm	Edgar Link	pending
R53.htm	Edgar Link	pending
R54.htm	Edgar Link	pending
R55.htm	Edgar Link	pending
R56.htm	Edgar Link	pending
R57.htm	Edgar Link	pending
R58.htm	Edgar Link	pending
R59.htm	Edgar Link	pending
R6.htm	Edgar Link	pending
R60.htm	Edgar Link	pending
R61.htm	Edgar Link	pending
R62.htm	Edgar Link	pending
R63.htm	Edgar Link	pending
R64.htm	Edgar Link	pending
R65.htm	Edgar Link	pending
R66.htm	Edgar Link	pending
R67.htm	Edgar Link	pending
R68.htm	Edgar Link	pending
R69.htm	Edgar Link	pending
R7.htm	Edgar Link	pending
R70.htm	Edgar Link	pending
R71.htm	Edgar Link	pending
R72.htm	Edgar Link	pending
R73.htm	Edgar Link	pending
R74.htm	Edgar Link	pending
R75.htm	Edgar Link	pending
R76.htm	Edgar Link	pending
R77.htm	Edgar Link	pending
R78.htm	Edgar Link	pending
R79.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R80.htm	Edgar Link	pending
R81.htm	Edgar Link	pending
R82.htm	Edgar Link	pending
R83.htm	Edgar Link	pending
R84.htm	Edgar Link	pending
R85.htm	Edgar Link	pending
R86.htm	Edgar Link	pending
R87.htm	Edgar Link	pending
R88.htm	Edgar Link	pending
R89.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
R90.htm	Edgar Link	pending
R91.htm	Edgar Link	pending
R92.htm	Edgar Link	pending
R93.htm	Edgar Link	pending
R94.htm	Edgar Link	pending
R95.htm	Edgar Link	pending
R96.htm	Edgar Link	pending
R97.htm	Edgar Link	pending
R98.htm	Edgar Link	pending
R99.htm	Edgar Link	pending
report.css	Edgar Link	pending
rnst-20191231.xsd	Edgar Link	pending
rnst-20191231_cal.xml	Edgar Link	unprocessable
rnst-20191231_def.xml	Edgar Link	unprocessable
rnst-20191231_lab.xml	Edgar Link	unprocessable
rnst-20191231_pre.xml	Edgar Link	unprocessable
rnst1231201910k.htm	Edgar Link	pending
rnst1231201910k_htm.xml	Edgar Link	completed
rnst12312019exhibit21s.htm	Edgar Link	pending
rnst12312019exhibit311.htm	Edgar Link	pending
rnst12312019exhibit312.htm	Edgar Link	pending
rnst12312019exhibit321.htm	Edgar Link	pending
rnst12312019exhibit322.htm	Edgar Link	pending
Show.js	Edgar Link	pending
signaturea02.jpg	Edgar Link	pending

Create your account

Find Stocks Worth Researching

Deeply Understand Businesses

Value Businesses Intelligently

$RNST
RENASANT CORP Stock $rnst

2018 Q4 Form 10-K Financial Statement

#000071507220000046 Filed on February 27, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$RNST RENASANT CORP Stock $rnst

2018 Q4 Form 10-K Financial Statement

#000071507220000046 Filed on February 27, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$RNST
RENASANT CORP Stock $rnst