$SFNC
SIMMONS FIRST NATIONAL CORP Stock $sfnc

$sfnc Overview Financials Valuation SEC Filings Company Website

2023 Q4 Form 10-Q Financial Statement

#000162828023037027 Filed on November 06, 2023

Income Statement

Concept	2023 Q4	2023 Q3
Revenue		$310.3M
YoY Change		34.55%
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	$11.98M	$11.90M
YoY Change	-2.64%	-4.26%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense		$156.9M
YoY Change		323.55%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$19.43M	$56.50M
YoY Change	-79.56%	-42.09%
Income Tax	-$4.473M	$9.243M
% Of Pretax Income	-23.02%	16.36%
Net Earnings	$23.91M	$47.25M
YoY Change	-71.29%	-41.38%
Net Earnings / Revenue		15.23%
Basic Earnings Per Share		$0.38
Diluted Earnings Per Share	$0.19	$0.37
COMMON SHARES
Basic Shares Outstanding	125.2M shares	126.3M shares
Diluted Shares Outstanding		126.3M shares

Balance Sheet

Concept	2023 Q4	2023 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$614.1M	$605.6M
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	$570.7M	$567.0M
YoY Change	4.0%	3.1%
Goodwill	$1.320B	$1.320B
YoY Change	0.0%	0.76%
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$141.8M	$175.0M
YoY Change		7535.25%
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$27.35B	$27.56B
YoY Change	-0.42%	1.8%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$267.7M	$195.0M
YoY Change	3.81%	-28.04%
Accrued Expenses	$68.79M	$64.00M
YoY Change	43.76%	27.52%
Deferred Revenue
YoY Change
Short-Term Debt	$67.97M	$74.00M
YoY Change	-57.63%	-56.09%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$335.7M	$333.0M
YoY Change	30.16%	22.88%
LONG-TERM LIABILITIES
Long-Term Debt	$1.339B	$389.0M
YoY Change	9.24%	-70.77%
Other Long-Term Liabilities
YoY Change
Total Long-Term Liabilities	$1.339B	$389.0M
YoY Change	9.24%	-70.77%
TOTAL LIABILITIES
Total Short-Term Liabilities	$335.7M	$333.0M
Total Long-Term Liabilities	$1.339B	$389.0M
Total Liabilities	$23.92B	$24.28B
YoY Change	-1.13%	1.5%
SHAREHOLDERS EQUITY
Retained Earnings	$1.330B	$1.331B
YoY Change	5.9%	11.23%
Common Stock	$1.252M	$1.251M
YoY Change	-1.42%	-1.42%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$3.426B	$3.286B
YoY Change
Total Liabilities & Shareholders Equity	$27.35B	$27.56B
YoY Change	-0.42%	1.8%

Cashflow Statement

Concept	2023 Q4	2023 Q3
OPERATING ACTIVITIES
Net Income	$23.91M	$47.25M
YoY Change	-71.29%	-41.38%
Depreciation, Depletion And Amortization	$11.98M	$11.90M
YoY Change	-2.64%	-4.26%
Cash From Operating Activities	$420.6M	-$38.50M
YoY Change	338.15%	-179.63%
INVESTING ACTIVITIES
Capital Expenditures	$6.486M	$7.900M
YoY Change	-31.81%	-190.21%
Acquisitions
YoY Change
Other Investing Activities	-$11.81M	$262.4M
YoY Change	-96.57%	-213.96%
Cash From Investing Activities	-$18.29M	$254.5M
YoY Change	-94.83%	-206.48%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-393.8M	-356.3M
YoY Change	-251.03%	275.94%
NET CHANGE
Cash From Operating Activities	420.6M	-38.50M
Cash From Investing Activities	-18.29M	254.5M
Cash From Financing Activities	-393.8M	-356.3M
Net Change In Cash	8.470M	-140.3M
YoY Change	212.32%	-50.85%
FREE CASH FLOW
Cash From Operating Activities	$420.6M	-$38.50M
Capital Expenditures	$6.486M	$7.900M
Free Cash Flow	$414.1M	-$46.40M
YoY Change	378.84%	-181.25%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2023Q3	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	1196000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	3852854000	usd
CY2022Q4	us-gaap	Debt Securities DebtSecurities	7612560000	usd
CY2022Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	3486000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	16142124000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	196955000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	15945169000	usd
CY2022Q4	sfnc	Property Plantand Equipmentand Rightof Use Assetafter Accumulated Depreciationand Amortization PropertyPlantandEquipmentandRightofUseAssetafterAccumulatedDepreciationandAmortization	548741000	usd
CY2022Q4	us-gaap	Real Estate Acquired Through Foreclosure RealEstateAcquiredThroughForeclosure	2887000	usd
CY2022Q4	us-gaap	Interest Receivable InterestReceivable	102892000	usd
CY2022Q4	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	491340000	usd
CY2022Q4	us-gaap	Goodwill Goodwill	1319598000	usd
CY2022Q4	us-gaap	Other Assets OtherAssets	622520000	usd
CY2022Q4	us-gaap	Assets Assets	27461061000	usd
CY2022Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	6016651000	usd
CY2022Q4	us-gaap	Other Borrowings OtherBorrowings	859296000	usd
CY2022Q4	us-gaap	Subordinated Debt SubordinatedDebt	365989000	usd
CY2022Q4	us-gaap	Accounts Payable And Accrued Liabilities Current And Noncurrent AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	257917000	usd
CY2022Q4	us-gaap	Liabilities Liabilities	24191699000	usd
CY2023Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2023Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	350000000	shares
CY2023Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	125133281	shares
CY2022Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	127046654	shares
CY2022Q4	us-gaap	Common Stock Value CommonStockValue	1270000	usd
CY2022Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	2530066000	usd
CY2022Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1255586000	usd
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-517560000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	3269362000	usd
CY2022Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	27461061000	usd
	us-gaap	Interest And Fee Income Loans And Leases Held In Portfolio InterestAndFeeIncomeLoansAndLeasesHeldInPortfolio	478101000	usd
	us-gaap	Investment Income Interest InvestmentIncomeInterest	112514000	usd
	us-gaap	Interest And Fee Income Loans Held For Sale Mortgages InterestAndFeeIncomeLoansHeldForSaleMortgages	568000	usd
CY2023Q3	us-gaap	Interest And Fee Income Other Loans Held For Sale InterestAndFeeIncomeOtherLoansHeldForSale	0	usd
CY2022Q3	us-gaap	Interest And Fee Income Other Loans Held For Sale InterestAndFeeIncomeOtherLoansHeldForSale	998000	usd
	us-gaap	Interest And Fee Income Other Loans Held For Sale InterestAndFeeIncomeOtherLoansHeldForSale	0	usd
	us-gaap	Interest And Fee Income Other Loans Held For Sale InterestAndFeeIncomeOtherLoansHeldForSale	3061000	usd
CY2023Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	310286000	usd
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	886643000	usd
CY2023Q3	us-gaap	Interest Expense Deposits InterestExpenseDeposits	133157000	usd
CY2022Q3	us-gaap	Interest Expense Deposits InterestExpenseDeposits	25429000	usd
CY2023Q3	us-gaap	Interest Expense Federal Funds Purchased And Securities Sold Under Agreements To Repurchase InterestExpenseFederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase	277000	usd
	us-gaap	Interest Expense Other InterestExpenseOther	15671000	usd
	us-gaap	Interest Expense InterestExpense	392145000	usd
	us-gaap	Interest Expense InterestExpense	72861000	usd
CY2023Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	153433000	usd
CY2022Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	193585000	usd
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	494498000	usd
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	524290000	usd
CY2023Q3	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	7722000	usd
CY2022Q3	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	103000	usd
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	31999000	usd
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	510242000	usd
CY2023Q3	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	3095000	usd
CY2022Q3	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	2902000	usd
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	8623000	usd
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	8171000	usd
CY2023Q3	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	0	usd
CY2022Q3	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	-22000	usd
	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	-391000	usd
	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	-226000	usd
CY2023Q3	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	7433000	usd
CY2022Q3	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	6658000	usd
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	28532000	usd
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	20761000	usd
CY2022Q3	us-gaap	Labor And Related Expense LaborAndRelatedExpense	71923000	usd
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	219135000	usd
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	213964000	usd
CY2023Q3	us-gaap	Occupancy Net OccupancyNet	12020000	usd
CY2022Q3	us-gaap	Occupancy Net OccupancyNet	11674000	usd
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	131213000	usd
CY2023Q3	us-gaap	Noninterest Expense NoninterestExpense	131998000	usd
CY2022Q3	us-gaap	Noninterest Expense NoninterestExpense	138943000	usd
	us-gaap	Noninterest Expense NoninterestExpense	414922000	usd
	us-gaap	Noninterest Expense NoninterestExpense	424173000	usd
CY2023Q3	us-gaap	Income Loss Attributable To Parent IncomeLossAttributableToParent	56490000	usd
CY2022Q3	us-gaap	Income Loss Attributable To Parent IncomeLossAttributableToParent	97562000	usd
	us-gaap	Income Loss Attributable To Parent IncomeLossAttributableToParent	181169000	usd
	us-gaap	Income Loss Attributable To Parent IncomeLossAttributableToParent	211488000	usd
CY2023Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	9243000	usd
CY2022Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	16959000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	30019000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	38336000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	47247000	usd
CY2022Q3	us-gaap	Net Income Loss NetIncomeLoss	80603000	usd
	us-gaap	Net Income Loss NetIncomeLoss	151150000	usd
	us-gaap	Net Income Loss NetIncomeLoss	173152000	usd
CY2023Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.38
CY2022Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.63
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.19
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.41
CY2023Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.37
CY2022Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.63
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.19
CY2022Q3	us-gaap	Net Income Loss NetIncomeLoss	80603000	usd
	us-gaap	Net Income Loss NetIncomeLoss	151150000	usd
	us-gaap	Net Income Loss NetIncomeLoss	173152000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-131603000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-204940000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-96104000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-658717000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-22000	usd
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-391000	usd
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-226000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	24657000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	41412000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	39618000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	101443000	usd
CY2023Q3	sfnc	Other Comprehensive Income Unrealized Gains On Securities Transferred From Available For Sale To Held To Maturity OtherComprehensiveIncomeUnrealizedGainsOnSecuritiesTransferredFromAvailableForSaleToHeldToMaturity	0	usd
CY2022Q3	sfnc	Other Comprehensive Income Unrealized Gains On Securities Transferred From Available For Sale To Held To Maturity OtherComprehensiveIncomeUnrealizedGainsOnSecuritiesTransferredFromAvailableForSaleToHeldToMaturity	0	usd
	sfnc	Other Comprehensive Income Unrealized Gains On Securities Transferred From Available For Sale To Held To Maturity OtherComprehensiveIncomeUnrealizedGainsOnSecuritiesTransferredFromAvailableForSaleToHeldToMaturity	0	usd
	sfnc	Other Comprehensive Income Unrealized Gains On Securities Transferred From Available For Sale To Held To Maturity OtherComprehensiveIncomeUnrealizedGainsOnSecuritiesTransferredFromAvailableForSaleToHeldToMaturity	-206682000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-158806000	usd
	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-36309000	usd
	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-754329000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-26321000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-41504000	usd
	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-9489000	usd
	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-197144000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-74392000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-117302000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-26820000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-557185000	usd
CY2023Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-27145000	usd
CY2022Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-36699000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	124330000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-384033000	usd
	us-gaap	Net Income Loss NetIncomeLoss	151150000	usd
	us-gaap	Net Income Loss NetIncomeLoss	173152000	usd
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	35933000	usd
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	36660000	usd
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	31999000	usd
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	14048000	usd
	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	-391000	usd
	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	-226000	usd
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-10647000	usd
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	32531000	usd
	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	114000	usd
	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	274000	usd
	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	424000	usd
	us-gaap	Gain Loss On Sale Of Mortgage Loans GainLossOnSaleOfMortgageLoans	5711000	usd
	us-gaap	Gain Loss On Sale Of Mortgage Loans GainLossOnSaleOfMortgageLoans	7187000	usd
	us-gaap	Gain Loss On Sales Of Consumer Loans GainLossOnSalesOfConsumerLoans	0	usd
	us-gaap	Gain Loss On Sales Of Consumer Loans GainLossOnSalesOfConsumerLoans	282000	usd
	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-4202000	usd
	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-2924000	usd
	sfnc	Bank Owned Life Insuranceand Death Benefits Income BankOwnedLifeInsuranceandDeathBenefitsIncome	9811000	usd
	us-gaap	Investment Income Interest InvestmentIncomeInterest	112514000	usd
	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	391000	usd
CY2022Q3	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	8000	usd
CY2022Q3	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	30000	usd
	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	45000	usd
	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	271000	usd
	sfnc	Income Tax Benefit Related To Security Gains Losses Percentage IncomeTaxBenefitRelatedToSecurityGainsLossesPercentage	0.26135
	sfnc	Income Tax Benefit Related To Security Gains Losses Percentage IncomeTaxBenefitRelatedToSecurityGainsLossesPercentage	0.26135
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	16770000000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	16140000000	usd
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	16771888000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	16142124000	usd
	us-gaap	Financing Receivable Purchased With Credit Deterioration Discount Premium FinancingReceivablePurchasedWithCreditDeteriorationDiscountPremium	7700000	usd
CY2022	us-gaap	Financing Receivable Purchased With Credit Deterioration Discount Premium FinancingReceivablePurchasedWithCreditDeteriorationDiscountPremium	26400000	usd
CY2023Q3	us-gaap	Financing Receivable Accrued Interest Before Allowance For Credit Loss FinancingReceivableAccruedInterestBeforeAllowanceForCreditLoss	74300000	usd
CY2022Q4	us-gaap	Financing Receivable Accrued Interest Before Allowance For Credit Loss FinancingReceivableAccruedInterestBeforeAllowanceForCreditLoss	65400000	usd
CY2023Q3	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	81135000	usd
CY2022Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	58434000	usd
CY2023Q3	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	9200000	usd
CY2022Q4	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	16900000	usd
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	16771888000	usd
CY2023Q3	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	806000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	16142124000	usd
CY2022Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	507000	usd
CY2023Q3	us-gaap	Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://simmonsbank.com/20230930#PropertyPlantandEquipmentandRightofUseAssetafterAccumulatedDepreciationandAmortization
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://simmonsbank.com/20230930#PropertyPlantandEquipmentandRightofUseAssetafterAccumulatedDepreciationandAmortization
CY2022Q4	us-gaap	Operating Lease Liability Current Statement Of Financial Position Extensible List OperatingLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent
CY2023Q3	us-gaap	Operating Lease Liability Current Statement Of Financial Position Extensible List OperatingLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent
CY2023Q3	us-gaap	Derivative Asset Statement Of Financial Position Extensible Enumeration DerivativeAssetStatementOfFinancialPositionExtensibleEnumeration	http://fasb.org/us-gaap/2023#OtherAssets
CY2023Q3	us-gaap	Derivative Liability Statement Of Financial Position Extensible Enumeration DerivativeLiabilityStatementOfFinancialPositionExtensibleEnumeration	http://fasb.org/us-gaap/2023#OtherAssets
CY2022Q4	us-gaap	Derivative Asset Statement Of Financial Position Extensible Enumeration DerivativeAssetStatementOfFinancialPositionExtensibleEnumeration	http://fasb.org/us-gaap/2023#OtherAssets
CY2022Q4	us-gaap	Derivative Liability Statement Of Financial Position Extensible Enumeration DerivativeLiabilityStatementOfFinancialPositionExtensibleEnumeration	http://fasb.org/us-gaap/2023#OtherAssets
CY2022Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	4331413000	usd
CY2022Q4	us-gaap	Other Intangible Assets Net OtherIntangibleAssetsNet	128951000	usd
CY2022Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	11762885000	usd
CY2022Q4	us-gaap	Time Deposits TimeDeposits	4768558000	usd
CY2022Q4	us-gaap	Deposits Deposits	22548094000	usd
CY2022Q4	us-gaap	Federal Funds Purchased And Securities Sold Under Agreements To Repurchase FederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase	160403000	usd
	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	2907000	usd
CY2022Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	230618000	usd
	us-gaap	Interest Expense Subordinated Notes And Debentures InterestExpenseSubordinatedNotesAndDebentures	18268000	usd
	us-gaap	Interest Expense Subordinated Notes And Debentures InterestExpenseSubordinatedNotesAndDebentures	14698000	usd
CY2022Q3	us-gaap	Interest Expense InterestExpense	37033000	usd
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	14048000	usd
CY2023Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	145711000	usd
CY2022Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	193482000	usd
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	462499000	usd
CY2023Q3	us-gaap	Noninterest Income NoninterestIncome	42777000	usd
CY2022Q3	us-gaap	Noninterest Income NoninterestIncome	43023000	usd
	us-gaap	Noninterest Income NoninterestIncome	133592000	usd
	us-gaap	Noninterest Income NoninterestIncome	125419000	usd
CY2023Q3	us-gaap	Labor And Related Expense LaborAndRelatedExpense	67374000	usd
	us-gaap	Occupancy Net OccupancyNet	35008000	usd
	us-gaap	Occupancy Net OccupancyNet	32701000	usd
CY2023Q3	us-gaap	Equipment Expense EquipmentExpense	5117000	usd
CY2022Q3	us-gaap	Equipment Expense EquipmentExpense	5394000	usd
	us-gaap	Equipment Expense EquipmentExpense	15296000	usd
	us-gaap	Equipment Expense EquipmentExpense	15273000	usd
CY2023Q3	us-gaap	Foreclosed Real Estate Expense ForeclosedRealEstateExpense	228000	usd
CY2022Q3	us-gaap	Foreclosed Real Estate Expense ForeclosedRealEstateExpense	168000	usd
	us-gaap	Foreclosed Real Estate Expense ForeclosedRealEstateExpense	703000	usd
	us-gaap	Foreclosed Real Estate Expense ForeclosedRealEstateExpense	653000	usd
CY2023Q3	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	4672000	usd
CY2022Q3	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	3278000	usd
	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	14766000	usd
	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	7928000	usd
CY2023Q3	us-gaap	Acquisition Costs AcquisitionCosts	5000	usd
CY2022Q3	us-gaap	Acquisition Costs AcquisitionCosts	1422000	usd
	us-gaap	Acquisition Costs AcquisitionCosts	1420000	usd
	us-gaap	Acquisition Costs AcquisitionCosts	22441000	usd
CY2023Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	42582000	usd
CY2022Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	45084000	usd
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	128594000	usd
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.40
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	47247000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	0	usd
CY2023Q3	sfnc	Other Comprehensive Income Amortization Of Unrealized Gains On Securities Transferred From Available For Sale To Held To Maturity OtherComprehensiveIncomeAmortizationOfUnrealizedGainsOnSecuritiesTransferredFromAvailableForSaleToHeldToMaturity	-6233000	usd
CY2022Q3	sfnc	Other Comprehensive Income Amortization Of Unrealized Gains On Securities Transferred From Available For Sale To Held To Maturity OtherComprehensiveIncomeAmortizationOfUnrealizedGainsOnSecuritiesTransferredFromAvailableForSaleToHeldToMaturity	-4700000	usd
	sfnc	Other Comprehensive Income Amortization Of Unrealized Gains On Securities Transferred From Available For Sale To Held To Maturity OtherComprehensiveIncomeAmortizationOfUnrealizedGainsOnSecuritiesTransferredFromAvailableForSaleToHeldToMaturity	-19786000	usd
	sfnc	Other Comprehensive Income Amortization Of Unrealized Gains On Securities Transferred From Available For Sale To Held To Maturity OtherComprehensiveIncomeAmortizationOfUnrealizedGainsOnSecuritiesTransferredFromAvailableForSaleToHeldToMaturity	-9401000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-100713000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	9617000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	11475000	usd
	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	193000	usd
	sfnc	Bank Owned Life Insuranceand Death Benefits Income BankOwnedLifeInsuranceandDeathBenefitsIncome	8189000	usd
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	usd
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-365000	usd
	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	207822000	usd
	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	436477000	usd
	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	205329000	usd
	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	467261000	usd
	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	7469000	usd
	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	5852000	usd
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	99325000	usd
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	18712000	usd
	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	5115000	usd
	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	34850000	usd
	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-3730000	usd
	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-5373000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	120436000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	226208000	usd
	sfnc	Proceeds From Loan Originations And Principal Collections Net ProceedsFromLoanOriginationsAndPrincipalCollectionsNet	709735000	usd
	sfnc	Proceeds From Loan Originations And Principal Collections Net ProceedsFromLoanOriginationsAndPrincipalCollectionsNet	1344441000	usd
	us-gaap	Proceeds From Sale Of Loans Receivable ProceedsFromSaleOfLoansReceivable	51856000	usd
	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	1867000	usd
	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	3476000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	494388000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	974625000	usd
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	2286000	usd
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	261375000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	65786000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	60215000	usd
	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	62885000	usd
	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	329660000	usd
	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	3686000	usd
	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	1873000	usd
	us-gaap	Proceeds From Previous Acquisition ProceedsFromPreviousAcquisition	0	usd
	us-gaap	Proceeds From Previous Acquisition ProceedsFromPreviousAcquisition	276396000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-165280000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-592200000	usd
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	-316514000	usd
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	63128000	usd
	us-gaap	Repayments Of Subordinated Debt RepaymentsOfSubordinatedDebt	0	usd
	us-gaap	Repayments Of Subordinated Debt RepaymentsOfSubordinatedDebt	56189000	usd
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	75926000	usd
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	69963000	usd
	us-gaap	Proceeds From Repayments Of Other Debt ProceedsFromRepaymentsOfOtherDebt	488559000	usd
	us-gaap	Proceeds From Repayments Of Other Debt ProceedsFromRepaymentsOfOtherDebt	-411250000	usd
	us-gaap	Increase Decrease In Federal Funds Purchased And Securities Sold Under Agreements To Repurchase Net IncreaseDecreaseInFederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchaseNet	-85921000	usd
	us-gaap	Increase Decrease In Federal Funds Purchased And Securities Sold Under Agreements To Repurchase Net IncreaseDecreaseInFederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchaseNet	-16890000	usd
	sfnc	Proceeds From Payments For Issuanceof Shares Sharebased Payment Arrangement Including Option Exercised And Canceled ProceedsFromPaymentsForIssuanceofSharesSharebasedPaymentArrangementIncludingOptionExercisedAndCanceled	-2662000	usd
	sfnc	Proceeds From Payments For Issuanceof Shares Sharebased Payment Arrangement Including Option Exercised And Canceled ProceedsFromPaymentsForIssuanceofSharesSharebasedPaymentArrangementIncludingOptionExercisedAndCanceled	-4105000	usd
	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	833000	usd
	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	1151000	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	39999000	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	111133000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-31630000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-605251000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-76474000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-971243000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	682122000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1650653000	usd
CY2023Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	605648000	usd
CY2022Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	679410000	usd
CY2023Q2	us-gaap	Stockholders Equity StockholdersEquity	3356326000	usd
CY2023Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-27145000	usd
CY2023Q3	us-gaap	Stock Issued During Period Shares Share Based Compensation StockIssuedDuringPeriodSharesShareBasedCompensation	37536	shares
CY2023Q3	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	1442000	usd
CY2023Q3	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	1128962	shares
CY2023Q3	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	19977000	usd
CY2023Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.20
CY2023Q3	us-gaap	Dividends Common Stock DividendsCommonStock	25091000	usd
CY2023Q3	us-gaap	Stockholders Equity StockholdersEquity	3285555000	usd
CY2022Q2	us-gaap	Stockholders Equity StockholdersEquity	3259895000	usd
CY2022Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-36699000	usd
CY2022Q3	us-gaap	Stock Issued During Period Shares Share Based Compensation StockIssuedDuringPeriodSharesShareBasedCompensation	39416	shares
CY2022Q3	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	3111000	usd
CY2022Q3	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	1883713	shares
CY2022Q3	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	45037000	usd
CY2022Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.19
CY2022Q3	us-gaap	Dividends Common Stock DividendsCommonStock	24119000	usd
CY2022Q3	us-gaap	Stockholders Equity StockholdersEquity	3157151000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	3269362000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	124330000	usd
	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	42510	shares
	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	833000	usd
	us-gaap	Stock Issued During Period Shares Share Based Compensation StockIssuedDuringPeriodSharesShareBasedCompensation	301166	shares
	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	6955000	usd
	us-gaap	Stock Issued During Period Shares Acquisitions StockIssuedDuringPeriodSharesAcquisitions	2257049	shares
	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	39999000	usd
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.60
	us-gaap	Dividends Common Stock DividendsCommonStock	75926000	usd
CY2023Q3	us-gaap	Stockholders Equity StockholdersEquity	3285555000	usd
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	3248841000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-384033000	usd
	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	59475	shares
	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	1151000	usd
	us-gaap	Stock Issued During Period Shares Share Based Compensation StockIssuedDuringPeriodSharesShareBasedCompensation	326236	shares
	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	7370000	usd
	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	4432762	shares
	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	111133000	usd
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.57
	us-gaap	Dividends Common Stock DividendsCommonStock	69963000	usd
CY2022Q3	us-gaap	Stockholders Equity StockholdersEquity	3157151000	usd
CY2023Q3	sfnc	Number Of Financial Centers NumberOfFinancialCenters	232	center
CY2022Q2	us-gaap	Debt Securities Available For Sale Transfer To Held To Maturity Allowance For Credit Loss Expense DebtSecuritiesAvailableForSaleTransferToHeldToMaturityAllowanceForCreditLossExpense	1990000000	usd
CY2021Q3	us-gaap	Debt Securities Available For Sale Transfer To Held To Maturity Allowance For Credit Loss Expense DebtSecuritiesAvailableForSaleTransferToHeldToMaturityAllowanceForCreditLossExpense	500800000	usd
	sfnc	Debt Securities Held To Maturity Transfer Unrealized Loss DebtSecuritiesHeldToMaturityTransferUnrealizedLoss	131200000	usd
	sfnc	Debt Securities Available For Sale Transfer To Held To Maturity Gain Loss DebtSecuritiesAvailableForSaleTransferToHeldToMaturityGainLoss	0	usd
CY2023Q3	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss	3745506000	usd
CY2023Q3	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest	3214000	usd
CY2023Q3	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest After Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestAfterAllowanceForCreditLoss	3742292000	usd
CY2023Q3	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	26000	usd
CY2023Q3	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	894107000	usd
CY2023Q3	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	2848211000	usd
CY2022Q4	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss	3761094000	usd
CY2022Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest	1388000	usd
CY2022Q4	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest After Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestAfterAllowanceForCreditLoss	3759706000	usd
CY2022Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	283000	usd
CY2022Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	696756000	usd
CY2022Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	3063233000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	3890910000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	1196000	usd
CY2023Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	156000	usd
CY2023Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	531449000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	4331413000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	0	usd
CY2022Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	373000	usd
CY2022Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	478932000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	3852854000	usd
CY2023Q3	sfnc	Debt Securities Heldtomaturity Interest Receivable DebtSecuritiesHeldtomaturityInterestReceivable	17500000	usd
CY2023Q3	sfnc	Debt Securities Availableforsale Interest Receivable DebtSecuritiesAvailableforsaleInterestReceivable	18600000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	45424000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	4168000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	3282758000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	526085000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	3328182000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	530253000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	3360000000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	3330000000	usd
CY2023Q3	sfnc	Debt Securities Unrealized Loss Position Quantitative Disclosure Percent DebtSecuritiesUnrealizedLossPositionQuantitativeDisclosurePercent	0.991
CY2023Q2	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest	3214000	usd
CY2023Q3	us-gaap	Debt Securities Held To Maturity Credit Loss Expense Reversal DebtSecuritiesHeldToMaturityCreditLossExpenseReversal	0	usd
CY2023Q3	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Allowance For Credit Loss Period Increase Decrease DebtSecuritiesHeldToMaturityExcludingAccruedInterestAllowanceForCreditLossPeriodIncreaseDecrease	0	usd
CY2023Q3	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest	3214000	usd
CY2023Q2	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	2396000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest Transfer To Held To Maturity Allowance For Credit Loss Expense Reversal DebtSecuritiesAvailableForSaleExcludingAccruedInterestTransferToHeldToMaturityAllowanceForCreditLossExpenseReversal	0	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Not To Sell Before Recovery Credit Loss Previously Recorded Expense Reversal DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotToSellBeforeRecoveryCreditLossPreviouslyRecordedExpenseReversal	-1200000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	1196000	usd
CY2022Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest	1388000	usd
	us-gaap	Debt Securities Held To Maturity Credit Loss Expense Reversal DebtSecuritiesHeldToMaturityCreditLossExpenseReversal	1826000	usd
	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Allowance For Credit Loss Period Increase Decrease DebtSecuritiesHeldToMaturityExcludingAccruedInterestAllowanceForCreditLossPeriodIncreaseDecrease	0	usd
CY2023Q3	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest	3214000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	0	usd
	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest Transfer To Held To Maturity Allowance For Credit Loss Expense Reversal DebtSecuritiesAvailableForSaleExcludingAccruedInterestTransferToHeldToMaturityAllowanceForCreditLossExpenseReversal	12800000	usd
	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Securities Sold DebtSecuritiesAvailableForSaleAllowanceForCreditLossSecuritiesSold	-2078000	usd
	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Not To Sell Before Recovery Credit Loss Previously Recorded Expense Reversal DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotToSellBeforeRecoveryCreditLossPreviouslyRecordedExpenseReversal	-2526000	usd
	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest Allowance For Credit Loss Writeoff DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossWriteoff	7000000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	1196000	usd
CY2022Q2	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest	1381000	usd
CY2022Q3	us-gaap	Debt Securities Held To Maturity Credit Loss Expense Reversal DebtSecuritiesHeldToMaturityCreditLossExpenseReversal	0	usd
CY2022Q3	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Allowance For Credit Loss Period Increase Decrease DebtSecuritiesHeldToMaturityExcludingAccruedInterestAllowanceForCreditLossPeriodIncreaseDecrease	0	usd
CY2022Q3	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Recovery DebtSecuritiesHeldToMaturityAllowanceForCreditLossRecovery	3000	usd
CY2022Q3	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest	1384000	usd
CY2021Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest	1279000	usd
	us-gaap	Debt Securities Held To Maturity Credit Loss Expense Reversal DebtSecuritiesHeldToMaturityCreditLossExpenseReversal	0	usd
	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Allowance For Credit Loss Period Increase Decrease DebtSecuritiesHeldToMaturityExcludingAccruedInterestAllowanceForCreditLossPeriodIncreaseDecrease	0	usd
	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Recovery DebtSecuritiesHeldToMaturityAllowanceForCreditLossRecovery	105000	usd
CY2022Q3	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest	1384000	usd
	sfnc	Debt Securities Available For Sale Credit Loss Expense DebtSecuritiesAvailableForSaleCreditLossExpense	10300000	usd
CY2023Q3	sfnc	Debt Securities Available For Sale Credit Loss Reversal DebtSecuritiesAvailableForSaleCreditLossReversal	1200000	usd
	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest Allowance For Credit Loss Writeoff DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossWriteoff	7000000	usd
	sfnc	Debt Securities Available For Sale Number Of Uncollectible Securities DebtSecuritiesAvailableForSaleNumberOfUncollectibleSecurities	1	bond
CY2023Q3	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	1200000	usd
	sfnc	Debt Securities Available For Sale Number Of Nonperforming Securities DebtSecuritiesAvailableForSaleNumberOfNonperformingSecurities	2	bond
CY2023Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	50638000	usd
CY2022Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	40954000	usd
	us-gaap	Investment Income Interest InvestmentIncomeInterest	148163000	usd
CY2023Q3	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount	2192000	usd
CY2023Q3	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Fair Value HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue	2128000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	69877000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	68611000	usd
CY2023Q3	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount	9261000	usd
CY2023Q3	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	8731000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	159285000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	154113000	usd
CY2023Q3	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount	384518000	usd
CY2023Q3	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	319298000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	220681000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	189896000	usd
CY2023Q3	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount	2171211000	usd
CY2023Q3	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue	1512706000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	996002000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	788447000	usd
CY2023Q3	us-gaap	Held To Maturity Securities Debt Maturities Single Maturity Date Amortized Cost Basis HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis	1178324000	usd
CY2023Q3	us-gaap	Held To Maturity Securities Debt Maturities Single Maturity Date Fair Value HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateFairValue	1005348000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis	2444803000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate	2157092000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost	262000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue	262000	usd
CY2023Q3	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss	3745506000	usd
CY2023Q3	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	2848211000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	3358421000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Restricted DebtSecuritiesAvailableForSaleRestricted	3380000000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Restricted DebtSecuritiesAvailableForSaleRestricted	3960000000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	0	usd
	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	0	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	0	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	0	usd
	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	0	usd
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest Modified Period FinancingReceivableExcludingAccruedInterestModifiedPeriod	30702000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Modified Period FinancingReceivableExcludingAccruedInterestModifiedPeriod	31353000	usd
	sfnc	Financing Receivable Modifications Number Of Contracts In Payment Default FinancingReceivableModificationsNumberOfContractsInPaymentDefault	0	loan
CY2023Q3	sfnc	Financing Receivable Modifications Number Of Contracts In Payment Default FinancingReceivableModificationsNumberOfContractsInPaymentDefault	0	loan
CY2022Q3	sfnc	Financing Receivable Modifications Number Of Contracts3 FinancingReceivableModificationsNumberOfContracts3	3	loan
CY2022Q3	sfnc	Financing Receivable Troubled Debt Restructuring Premodification3 FinancingReceivableTroubledDebtRestructuringPremodification3	747000	usd
	sfnc	Financing Receivable Modifications Number Of Contracts3 FinancingReceivableModificationsNumberOfContracts3	4	loan
	sfnc	Financing Receivable Troubled Debt Restructuring Premodification3 FinancingReceivableTroubledDebtRestructuringPremodification3	760000	usd
CY2023Q3	sfnc	Financing Receivable Collateral Dependent Amount FinancingReceivableCollateralDependentAmount	129500000	usd
CY2022Q4	sfnc	Financing Receivable Collateral Dependent Amount FinancingReceivableCollateralDependentAmount	70900000	usd
CY2023Q3	sfnc	Financing Receivable Collateral Dependent Amount FinancingReceivableCollateralDependentAmount	129492000	usd
CY2022Q4	sfnc	Financing Receivable Collateral Dependent Amount FinancingReceivableCollateralDependentAmount	70926000	usd
CY2023Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	20222000	usd
CY2022Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-15897000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	36199000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-5405000	usd
CY2023Q3	sfnc	Provision For Unfunded Commitments ProvisionForUnfundedCommitments	-11300000	usd
CY2022Q3	sfnc	Provision For Unfunded Commitments ProvisionForUnfundedCommitments	16000000	usd
	sfnc	Provision For Unfunded Commitments ProvisionForUnfundedCommitments	-16300000	usd
	sfnc	Provision For Unfunded Commitments ProvisionForUnfundedCommitments	19453000	usd
CY2023Q3	us-gaap	Debt Securities Held To Maturity Credit Loss Expense Reversal DebtSecuritiesHeldToMaturityCreditLossExpenseReversal	0	usd
CY2022Q3	us-gaap	Debt Securities Held To Maturity Credit Loss Expense Reversal DebtSecuritiesHeldToMaturityCreditLossExpenseReversal	0	usd
	us-gaap	Debt Securities Held To Maturity Credit Loss Expense Reversal DebtSecuritiesHeldToMaturityCreditLossExpenseReversal	1826000	usd
	us-gaap	Debt Securities Held To Maturity Credit Loss Expense Reversal DebtSecuritiesHeldToMaturityCreditLossExpenseReversal	0	usd
CY2023Q3	sfnc	Debt Securities Available For Sale Credit Loss Expense Reversal DebtSecuritiesAvailableForSaleCreditLossExpenseReversal	-1200000	usd
CY2022Q3	sfnc	Debt Securities Available For Sale Credit Loss Expense Reversal DebtSecuritiesAvailableForSaleCreditLossExpenseReversal	0	usd
	sfnc	Debt Securities Available For Sale Credit Loss Expense Reversal DebtSecuritiesAvailableForSaleCreditLossExpenseReversal	10274000	usd
	sfnc	Debt Securities Available For Sale Credit Loss Expense Reversal DebtSecuritiesAvailableForSaleCreditLossExpenseReversal	0	usd
CY2023Q3	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	7722000	usd
CY2022Q3	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	103000	usd
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	31999000	usd
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	14048000	usd
CY2023Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	62357000	usd
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	46845000	usd
CY2023Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	63697000	usd
CY2022Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	47850000	usd
CY2023Q3	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y10M20D
CY2022Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P6Y8M8D
CY2023Q3	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0339
CY2022Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0241
CY2023Q3	us-gaap	Operating Lease Expense OperatingLeaseExpense	4200000	usd
	us-gaap	Operating Lease Expense OperatingLeaseExpense	11700000	usd
CY2022Q3	us-gaap	Operating Lease Expense OperatingLeaseExpense	3600000	usd
	us-gaap	Operating Lease Expense OperatingLeaseExpense	10500000	usd
CY2023Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	62357000	usd
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	46845000	usd
CY2023Q3	sfnc	Property Plantand Equipmentand Rightof Use Asset Accumulated Depreciationand Amortization PropertyPlantandEquipmentandRightofUseAssetAccumulatedDepreciationandAmortization	187849000	usd
CY2022Q4	sfnc	Property Plantand Equipmentand Rightof Use Asset Accumulated Depreciationand Amortization PropertyPlantandEquipmentandRightofUseAssetAccumulatedDepreciationandAmortization	199976000	usd
CY2023Q3	sfnc	Property Plantand Equipmentand Rightof Use Assetafter Accumulated Depreciationand Amortization PropertyPlantandEquipmentandRightofUseAssetafterAccumulatedDepreciationandAmortization	567167000	usd
CY2022Q4	sfnc	Property Plantand Equipmentand Rightof Use Assetafter Accumulated Depreciationand Amortization PropertyPlantandEquipmentandRightofUseAssetafterAccumulatedDepreciationandAmortization	548741000	usd
CY2022Q4	us-gaap	Goodwill Goodwill	1320000000	usd
CY2023Q3	us-gaap	Goodwill Goodwill	1320000000	usd
CY2023Q3	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	116660000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	128951000	usd
CY2023Q3	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	116660000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	128951000	usd
CY2023Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Remainder Of Fiscal Year FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear	4015000	usd
CY2023Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	15403000	usd
CY2023Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	12819000	usd
CY2023Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	12346000	usd
CY2023Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	12218000	usd
CY2023Q3	sfnc	Finite Lived Intangible Asset Expected Amortization After Year Four FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour	59859000	usd
CY2023Q3	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	116660000	usd
CY2023Q3	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	1670000000	usd
CY2022Q4	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	1080000000.00	usd
CY2023Q3	us-gaap	Interest Bearing Domestic Deposit Brokered InterestBearingDomesticDepositBrokered	3260000000	usd
CY2022Q4	us-gaap	Interest Bearing Domestic Deposit Brokered InterestBearingDomesticDepositBrokered	2750000000	usd
CY2023Q3	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	4706000	usd
CY2022Q3	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	14952000	usd
	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	25817000	usd
	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	35412000	usd
CY2023Q3	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	4537000	usd
CY2022Q3	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	2007000	usd
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	4202000	usd
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	2924000	usd
CY2023Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	9243000	usd
CY2022Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	16959000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	30019000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	38336000	usd
CY2023Q3	sfnc	Deferred Tax Assets Loans Acquired DeferredTaxAssetsLoansAcquired	4162000	usd
CY2022Q4	sfnc	Deferred Tax Assets Loans Acquired DeferredTaxAssetsLoansAcquired	5846000	usd
CY2023Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	47042000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	47145000	usd
CY2023Q3	sfnc	Deferred Tax Assets On Foreclosed Assets DeferredTaxAssetsOnForeclosedAssets	523000	usd
CY2022Q4	sfnc	Deferred Tax Assets On Foreclosed Assets DeferredTaxAssetsOnForeclosedAssets	523000	usd
CY2023Q3	us-gaap	Deferred Tax Assets Other Loss Carryforwards DeferredTaxAssetsOtherLossCarryforwards	9688000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Other Loss Carryforwards DeferredTaxAssetsOtherLossCarryforwards	10962000	usd
CY2023Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	3569000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	3867000	usd
CY2023Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Other DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOther	8065000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Other DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOther	8153000	usd
CY2023Q3	sfnc	Deferred Tax Assets Acquired Securities DeferredTaxAssetsAcquiredSecurities	7522000	usd
CY2022Q4	sfnc	Deferred Tax Assets Acquired Securities DeferredTaxAssetsAcquiredSecurities	7651000	usd
CY2023Q3	sfnc	Deferred Tax Assets Operating Lease Liabilities DeferredTaxAssetsOperatingLeaseLiabilities	15496000	usd
CY2022Q4	sfnc	Deferred Tax Assets Operating Lease Liabilities DeferredTaxAssetsOperatingLeaseLiabilities	11641000	usd
CY2023Q3	us-gaap	Deferred Tax Assets Unrealized Losses On Availablefor Sale Securities Gross DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross	193398000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Availablefor Sale Securities Gross DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross	177839000	usd
CY2023Q3	sfnc	Deferred Tax Assets Tax Deferred Expense Reservesand Accruals Unfunded Commitments DeferredTaxAssetsTaxDeferredExpenseReservesandAccrualsUnfundedCommitments	6235000	usd
CY2022Q4	sfnc	Deferred Tax Assets Tax Deferred Expense Reservesand Accruals Unfunded Commitments DeferredTaxAssetsTaxDeferredExpenseReservesandAccrualsUnfundedCommitments	10200000	usd
CY2023Q3	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	5886000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	4173000	usd
CY2023Q3	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	301586000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	288000000	usd
CY2023Q3	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	42438000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	44539000	usd
CY2023Q3	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	23415000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	24288000	usd
CY2023Q3	sfnc	Deferred Tax Liabilities Operating Right Of Use Assets DeferredTaxLiabilitiesOperatingRightOfUseAssets	15170000	usd
CY2022Q4	sfnc	Deferred Tax Liabilities Operating Right Of Use Assets DeferredTaxLiabilitiesOperatingRightOfUseAssets	11396000	usd
CY2023Q3	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	35230000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	25836000	usd
CY2023Q3	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	10304000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	8875000	usd
CY2023Q3	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	126557000	usd
CY2022Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	114934000	usd
CY2023Q3	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	175029000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	173066000	usd
CY2023Q3	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	11862000	usd
CY2022Q3	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	20488000	usd
	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	38045000	usd
	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	44412000	usd
CY2023Q3	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-40000	usd
CY2022Q3	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	1774000	usd
	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	657000	usd
	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	2339000	usd
CY2023Q3	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	28000	usd
CY2022Q3	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	16000	usd
	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	469000	usd
	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-89000	usd
CY2023Q3	sfnc	Effective Income Tax Rate Reconciliation Tax Exempt Interest Income EffectiveIncomeTaxRateReconciliationTaxExemptInterestIncome	3848000	usd
CY2022Q3	sfnc	Effective Income Tax Rate Reconciliation Tax Exempt Interest Income EffectiveIncomeTaxRateReconciliationTaxExemptInterestIncome	3682000	usd
	sfnc	Effective Income Tax Rate Reconciliation Tax Exempt Interest Income EffectiveIncomeTaxRateReconciliationTaxExemptInterestIncome	11523000	usd
	sfnc	Effective Income Tax Rate Reconciliation Tax Exempt Interest Income EffectiveIncomeTaxRateReconciliationTaxExemptInterestIncome	10704000	usd
CY2023Q3	sfnc	Effective Income Tax Reconciliation Bank Owned Life Insurance EffectiveIncomeTaxReconciliationBankOwnedLifeInsurance	636000	usd
CY2022Q3	sfnc	Effective Income Tax Reconciliation Bank Owned Life Insurance EffectiveIncomeTaxReconciliationBankOwnedLifeInsurance	509000	usd
	sfnc	Effective Income Tax Reconciliation Bank Owned Life Insurance EffectiveIncomeTaxReconciliationBankOwnedLifeInsurance	1973000	usd
	sfnc	Effective Income Tax Reconciliation Bank Owned Life Insurance EffectiveIncomeTaxReconciliationBankOwnedLifeInsurance	1399000	usd
CY2023Q3	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	567000	usd
CY2022Q3	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	301000	usd
	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	1501000	usd
	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	1838000	usd
CY2023Q3	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	2444000	usd
CY2022Q3	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-827000	usd
	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	5845000	usd
	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	5615000	usd
CY2023Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	9243000	usd
CY2022Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	16959000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	30019000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	38336000	usd
	sfnc	Number Of Tax Free Reorganization Transactions NumberOfTaxFreeReorganizationTransactions	4	transaction
CY2023Q3	us-gaap	Financial Assets Sold Under Agreements To Repurchase Gross Including Not Subject To Master Netting Arrangement FinancialAssetsSoldUnderAgreementsToRepurchaseGrossIncludingNotSubjectToMasterNettingArrangement	74100000	usd
CY2022Q4	us-gaap	Financial Assets Sold Under Agreements To Repurchase Gross Including Not Subject To Master Netting Arrangement FinancialAssetsSoldUnderAgreementsToRepurchaseGrossIncludingNotSubjectToMasterNettingArrangement	152400000	usd
	us-gaap	Schedule Of Repurchase Agreements ScheduleOfRepurchaseAgreements	The remaining contractual maturity of the securities sold under agreements to repurchase in the consolidated balance sheets as of September 30, 2023 and December 31, 2022 is presented in the following tables.<div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> </span></div><div style="margin-top:5pt"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:100.000%"><tr><td style="width:1.0%"></td><td style="width:32.808%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:11.543%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:0.518%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:11.543%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:0.518%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:11.543%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:0.518%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:11.543%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:0.518%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:11.548%"></td><td style="width:0.1%"></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%"> </span></td><td colspan="27" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Remaining Contractual Maturity of the Agreements</span></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">(In thousands)</span></td><td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Overnight and<br/>Continuous</span></td><td colspan="3" style="border-top:1pt solid #000000;padding:0 1pt"></td><td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Up to 30 Days</span></td><td colspan="3" style="border-top:1pt solid #000000;padding:0 1pt"></td><td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">30-90 Days</span></td><td colspan="3" style="border-top:1pt solid #000000;padding:0 1pt"></td><td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Greater than<br/>90 Days</span></td><td colspan="3" style="border-top:1pt solid #000000;padding:0 1pt"></td><td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Total</span></td></tr><tr><td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">September 30, 2023</span></td><td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%"> </span></td><td colspan="3" style="border-top:1pt solid #000000;padding:0 1pt"></td><td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%"> </span></td><td colspan="3" style="border-top:1pt solid #000000;padding:0 1pt"></td><td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%"> </span></td><td colspan="3" style="border-top:1pt solid #000000;padding:0 1pt"></td><td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%"> </span></td><td colspan="3" style="border-top:1pt solid #000000;padding:0 1pt"></td><td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%"> </span></td></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 10pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Repurchase agreements:</span></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 23.5pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">U.S. Government agencies</span></td><td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">74,082 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">— </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">— </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">— </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">74,082 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></tr><tr style="height:14pt"><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;border-top:3pt double #000000;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;border-top:3pt double #000000;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;border-top:3pt double #000000;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;border-top:3pt double #000000;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;border-top:3pt double #000000;padding:0 1pt"></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">December 31, 2022</span></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 10pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Repurchase agreements:</span></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 23.5pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">U.S. Government agencies</span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">152,403 </span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">— </span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">— </span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">— </span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">152,403 </span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></tr></table></div>
CY2023Q3	us-gaap	Long Term Debt LongTermDebt	1713958000	usd
CY2022Q4	us-gaap	Long Term Debt LongTermDebt	1225285000	usd
CY2023Q3	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	1330000000	usd
CY2022Q4	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	838500000	usd
CY2023Q3	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Collateral Pledged1 FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1	7050000000.00	usd
CY2023Q3	sfnc	Advances From Federal Home Loan Bank Available AdvancesFromFederalHomeLoanBankAvailable	5370000000	usd
CY2023Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal Remainder Of Fiscal Year LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear	441000	usd
CY2023Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	1822000	usd
CY2023Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	1822000	usd
CY2023Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	1824000	usd
CY2023Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	1920000	usd
CY2023Q3	sfnc	Long Term Debt Maturity After Year Four LongTermDebtMaturityAfterYearFour	381128000	usd
CY2023Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	388957000	usd
CY2009Q1	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	40040000	shares
CY2009Q1	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2023Q3	us-gaap	Preferred Stock Liquidation Preference Value PreferredStockLiquidationPreferenceValue	80000000	usd
CY2023Q3	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	1128962	shares
CY2023Q3	sfnc	Stock Repurchased During Period Value Price Per Share StockRepurchasedDuringPeriodValuePricePerShare	17.69
	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	2257049	shares
	sfnc	Stock Repurchased During Period Value Price Per Share StockRepurchasedDuringPeriodValuePricePerShare	17.72
	sfnc	Threshold Percentage Of Net Profits Exceeded By Dividends Declared Any Calendar Year ThresholdPercentageOfNetProfitsExceededByDividendsDeclaredAnyCalendarYear	0.75
	sfnc	Threshold Percentage Of Net Profits Exceeded By Dividends Declared Combined With Preceding Year ThresholdPercentageOfNetProfitsExceededByDividendsDeclaredCombinedWithPrecedingYear	0.75
CY2023Q3	us-gaap	Statutory Accounting Practices Statutory Amount Available For Dividend Payments Without Regulatory Approval StatutoryAccountingPracticesStatutoryAmountAvailableForDividendPaymentsWithoutRegulatoryApproval	238000000	usd
CY2023Q3	us-gaap	Tier One Leverage Capital Required To Be Well Capitalized To Average Assets TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets	0.05
CY2023Q3	us-gaap	Tier One Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets TierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.08
CY2023Q3	us-gaap	Capital Required To Be Well Capitalized To Risk Weighted Assets CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.10
CY2023Q3	sfnc	Common Equity Tier1 Ratio Required To Be Well Capitalized CommonEquityTier1RatioRequiredToBeWellCapitalized	0.065
CY2023Q3	sfnc	Capital Conservation Buffer CapitalConservationBuffer	0.025
CY2023Q3	us-gaap	Capital To Risk Weighted Assets CapitalToRiskWeightedAssets	0.1202
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	470000	shares
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	22.56
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	0
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	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	0	shares
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	0
CY2023Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	469000	shares
CY2023Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	22.58
CY2023Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	469000	shares
CY2023Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	22.58
	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Lower Range Limit ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit	20.29
	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Upper Range Limit ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit	24.07
CY2023Q3	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Outstanding Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions	469000	shares
	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Remaining Contractual Term2 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2	P1Y7M9D
CY2023Q3	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Exercise Price Beginning Balance1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1	22.58
CY2023Q3	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Exercisable Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions	469000	shares
CY2023Q3	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Exercisable Options Weighted Average Exercise Price1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1	22.58
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	9600000	usd
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	11500000	usd
CY2023Q3	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Stock Options EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions	0	usd
CY2023Q3	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Share Based Awards Other Than Options EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions	18500000	usd
	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P1Y4M24D
CY2023Q3	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	0	usd
CY2023Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	0	usd
CY2023Q3	us-gaap	Share Price SharePrice	16.96
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	6000	usd
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	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2023Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	47247000	usd
CY2022Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	80603000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	151150000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	173152000	usd
CY2023Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	125914000	shares
CY2022Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	127884000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	126730000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	122935000	shares
CY2023Q3	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	370000	shares
CY2022Q3	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	452000	shares
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	370000	shares
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	452000	shares
CY2023Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	126284000	shares
CY2022Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	128336000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	127100000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	123387000	shares
CY2023Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.38
CY2022Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.63
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.19
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.41
CY2023Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.37
CY2022Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.63
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.19
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.40
	us-gaap	Interest Paid Net InterestPaidNet	375536000	usd
	us-gaap	Interest Paid Net InterestPaidNet	66744000	usd
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	21915000	usd
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	14674000	usd
	sfnc	Transfers Of Available For Sale To Held To Maturity Securities TransfersOfAvailableForSaleToHeldToMaturitySecurities	0	usd
	sfnc	Transfers Of Available For Sale To Held To Maturity Securities TransfersOfAvailableForSaleToHeldToMaturitySecurities	1992542000	usd
CY2023Q3	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	7400000	usd
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	28500000	usd
CY2022Q3	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	6700000	usd
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	20800000	usd
	sfnc	Legal Reserve Recapture LegalReserveRecapture	4000000	usd
CY2023Q3	us-gaap	Professional Fees ProfessionalFees	4801000	usd
CY2022Q3	us-gaap	Professional Fees ProfessionalFees	4339000	usd
	us-gaap	Professional Fees ProfessionalFees	14443000	usd
	us-gaap	Professional Fees ProfessionalFees	13987000	usd
CY2023Q3	us-gaap	Postage Expense PostageExpense	2283000	usd
CY2022Q3	us-gaap	Postage Expense PostageExpense	2385000	usd
	us-gaap	Postage Expense PostageExpense	6973000	usd
	us-gaap	Postage Expense PostageExpense	6728000	usd
CY2023Q3	us-gaap	Communication Communication	1750000	usd
CY2022Q3	us-gaap	Communication Communication	1668000	usd
	us-gaap	Communication Communication	5182000	usd
	us-gaap	Communication Communication	4921000	usd
CY2023Q3	sfnc	Credit Card Expense CreditCardExpense	3356000	usd
CY2022Q3	sfnc	Credit Card Expense CreditCardExpense	3149000	usd
	sfnc	Credit Card Expense CreditCardExpense	9989000	usd
	sfnc	Credit Card Expense CreditCardExpense	8892000	usd
CY2023Q3	us-gaap	Marketing Expense MarketingExpense	5787000	usd
CY2022Q3	us-gaap	Marketing Expense MarketingExpense	6662000	usd
	us-gaap	Marketing Expense MarketingExpense	18041000	usd
	us-gaap	Marketing Expense MarketingExpense	21556000	usd
CY2023Q3	sfnc	Softwareand Technology Expense SoftwareandTechnologyExpense	10707000	usd
CY2022Q3	sfnc	Softwareand Technology Expense SoftwareandTechnologyExpense	10340000	usd
	sfnc	Softwareand Technology Expense SoftwareandTechnologyExpense	31299000	usd
	sfnc	Softwareand Technology Expense SoftwareandTechnologyExpense	30565000	usd
CY2023Q3	us-gaap	Supplies Expense SuppliesExpense	474000	usd
CY2022Q3	us-gaap	Supplies Expense SuppliesExpense	441000	usd
	us-gaap	Supplies Expense SuppliesExpense	1762000	usd
	us-gaap	Supplies Expense SuppliesExpense	1852000	usd
CY2023Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	4097000	usd
CY2022Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	4225000	usd
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	12291000	usd
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	11807000	usd
CY2023Q3	sfnc	Branch Right Sizing Expense BranchRightSizingExpense	547000	usd
CY2022Q3	sfnc	Branch Right Sizing Expense BranchRightSizingExpense	1170000	usd
	sfnc	Branch Right Sizing Expense BranchRightSizingExpense	1621000	usd
	sfnc	Branch Right Sizing Expense BranchRightSizingExpense	2371000	usd
CY2023Q3	us-gaap	Other General Expense OtherGeneralExpense	8780000	usd
CY2022Q3	us-gaap	Other General Expense OtherGeneralExpense	10705000	usd
	us-gaap	Other General Expense OtherGeneralExpense	26993000	usd
	us-gaap	Other General Expense OtherGeneralExpense	28534000	usd
CY2023Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	42582000	usd
CY2022Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	45084000	usd
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	128594000	usd
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	131213000	usd
CY2023Q3	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	55500000	usd
CY2022Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	44400000	usd
CY2023Q3	us-gaap	Hedged Asset Fair Value Hedge HedgedAssetFairValueHedge	901066000	usd
CY2022Q4	us-gaap	Hedged Asset Fair Value Hedge HedgedAssetFairValueHedge	944115000	usd
CY2023Q3	us-gaap	Hedged Asset Fair Value Hedge Cumulative Increase Decrease HedgedAssetFairValueHedgeCumulativeIncreaseDecrease	144979000	usd
CY2022Q4	us-gaap	Hedged Asset Fair Value Hedge Cumulative Increase Decrease HedgedAssetFairValueHedgeCumulativeIncreaseDecrease	106321000	usd
CY2023Q3	ecd	Rule10b51 Arr Adopted Flag Rule10b51ArrAdoptedFlag	false
CY2023Q3	ecd	Non Rule10b51 Arr Adopted Flag NonRule10b51ArrAdoptedFlag	false
CY2023Q3	ecd	Non Rule10b51 Arr Trmntd Flag NonRule10b51ArrTrmntdFlag	false
CY2023Q3	ecd	Rule10b51 Arr Trmntd Flag Rule10b51ArrTrmntdFlag	false

Files In Submission

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$SFNC
SIMMONS FIRST NATIONAL CORP Stock $sfnc

2023 Q4 Form 10-Q Financial Statement

#000162828023037027 Filed on November 06, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SFNC SIMMONS FIRST NATIONAL CORP Stock $sfnc

2023 Q4 Form 10-Q Financial Statement

#000162828023037027 Filed on November 06, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SFNC
SIMMONS FIRST NATIONAL CORP Stock $sfnc