$SFNC
SIMMONS FIRST NATIONAL CORP Stock $sfnc

$sfnc Overview Financials Valuation SEC Filings Company Website

2022 Q3 Form 10-Q Financial Statement

#000162828022021295 Filed on August 05, 2022

Income Statement

Concept	2022 Q3	2022 Q2	2022 Q1
Revenue	$230.6M	$204.8M	$161.7M
YoY Change	40.68%	22.66%	-4.55%
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	$12.43M	$12.59M	$11.64M
YoY Change	7.16%	9.5%	-5.57%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$37.03M	$19.71M	$16.12M
YoY Change	98.15%	-3.57%	-29.15%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$97.56M	$34.61M	$79.32M
YoY Change	-1.75%	-62.34%	-3.03%
Income Tax	$16.96M	$7.151M	$14.23M
% Of Pretax Income	17.38%	20.66%	17.93%
Net Earnings	$80.60M	$27.45M	$65.10M
YoY Change	0.04%	-63.36%	-3.45%
Net Earnings / Revenue	34.95%	13.4%	40.25%
Basic Earnings Per Share	$0.63	$0.21	$0.58
Diluted Earnings Per Share	$628.1K	$0.21	$0.58
COMMON SHARES
Basic Shares Outstanding	128.3M shares	128.3M shares	112.4M shares
Diluted Shares Outstanding	128.3M shares	128.7M shares	113.0M shares

Balance Sheet

Concept	2022 Q3	2022 Q2	2022 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$679.4M	$964.8M	$1.687B
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	$549.9M	$553.1M	$486.5M
YoY Change	18.52%	28.62%	13.68%
Goodwill	$1.310B	$1.310B	$1.100B
YoY Change	19.09%	19.09%	0.0%
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$2.292M	$194.2M	$115.2M
YoY Change	-92.61%	569.81%	109.38%
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$27.08B	$27.22B	$24.48B
YoY Change	16.58%	16.2%	4.86%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$271.0M	$233.1M	$156.4M
YoY Change	89.51%	72.68%	1.55%
Accrued Expenses	$50.19M	$52.70M	$53.53M
YoY Change	22.41%	50.56%	91.19%
Deferred Revenue
YoY Change
Short-Term Debt	$168.5M	$155.1M	$196.8M
YoY Change	-22.34%	-17.06%	-39.06%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$271.0M	$285.8M	$209.9M
YoY Change	47.28%	68.13%	15.34%
LONG-TERM LIABILITIES
Long-Term Debt	$1.331B	$456.9M	$1.721B
YoY Change	-22.72%	-73.47%	-0.12%
Other Long-Term Liabilities
YoY Change
Total Long-Term Liabilities	$1.331B	$456.9M	$1.721B
YoY Change	-22.72%	-73.47%	-0.12%
TOTAL LIABILITIES
Total Short-Term Liabilities	$271.0M	$285.8M	$209.9M
Total Long-Term Liabilities	$1.331B	$456.9M	$1.721B
Total Liabilities	$23.92B	$23.96B	$21.52B
YoY Change	18.44%	17.54%	5.4%
SHAREHOLDERS EQUITY
Retained Earnings	$1.196B	$1.140B	$1.137B
YoY Change	12.28%	13.51%	19.82%
Common Stock	$1.269M	$1.288M	$1.125M
YoY Change	19.04%	18.82%	3.88%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$3.157B	$3.260B	$2.962B
YoY Change
Total Liabilities & Shareholders Equity	$27.08B	$27.22B	$24.48B
YoY Change	16.58%	16.2%	4.86%

Cashflow Statement

Concept	2022 Q3	2022 Q2	2022 Q1
OPERATING ACTIVITIES
Net Income	$80.60M	$27.45M	$65.10M
YoY Change	0.04%	-63.36%	-3.45%
Depreciation, Depletion And Amortization	$12.43M	$12.59M	$11.64M
YoY Change	7.16%	9.5%	-5.57%
Cash From Operating Activities	$48.35M	$117.3M	$60.53M
YoY Change	10.9%	16.75%	-20.1%
INVESTING ACTIVITIES
Capital Expenditures	-$8.757M	-$9.844M	$7.156M
YoY Change	-71.75%	198.3%	184.65%
Acquisitions
YoY Change
Other Investing Activities	-$230.3M	-$322.5M	-$13.72M
YoY Change	-22.29%	-80.12%	-98.36%
Cash From Investing Activities	-$239.0M	-$332.3M	-$20.88M
YoY Change	-26.97%	-79.56%	-97.51%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net			$16.06M
YoY Change			421.27%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-94.78M	-507.2M	-$3.285M
YoY Change	-65.41%	1131.04%	-100.27%
NET CHANGE
Cash From Operating Activities	48.35M	117.3M	$60.53M
Cash From Investing Activities	-239.0M	-332.3M	-$20.88M
Cash From Financing Activities	-94.78M	-507.2M	-$3.285M
Net Change In Cash	-285.4M	-722.2M	$36.36M
YoY Change	-48.82%	-53.9%	-91.61%
FREE CASH FLOW
Cash From Operating Activities	$48.35M	$117.3M	$60.53M
Capital Expenditures	-$8.757M	-$9.844M	$7.156M
Free Cash Flow	$57.11M	$127.2M	$53.37M
YoY Change	-23.45%	22.52%	-27.13%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2022
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q2
	dei	Amendment Flag AmendmentFlag	false
	dei	Entity Central Index Key EntityCentralIndexKey	0000090498
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2022Q2	us-gaap	Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://simmonsbank.com/20220630#PropertyPlantandEquipmentandRightofUseAssetafterAccumulatedDepreciationandAmortization
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://simmonsbank.com/20220630#PropertyPlantandEquipmentandRightofUseAssetafterAccumulatedDepreciationandAmortization
CY2022Q2	us-gaap	Operating Lease Liability Current Statement Of Financial Position Extensible List OperatingLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2022#AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent
CY2021Q4	us-gaap	Operating Lease Liability Current Statement Of Financial Position Extensible List OperatingLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2022#AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent
	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2022-06-30
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity File Number EntityFileNumber	000-06253
	dei	Entity Registrant Name EntityRegistrantName	SIMMONS FIRST NATIONAL CORP
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	AR
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	71-0407808
	dei	Entity Address Address Line1 EntityAddressAddressLine1	501 Main Street
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	71601
	dei	Entity Address City Or Town EntityAddressCityOrTown	Pine Bluff
	dei	Entity Address State Or Province EntityAddressStateOrProvince	AR
	dei	City Area Code CityAreaCode	870
	dei	Local Phone Number LocalPhoneNumber	541-1000
	dei	Security12b Title Security12bTitle	Common stock, par value $0.01 per share
	dei	Trading Symbol TradingSymbol	SFNC
	dei	Security Exchange Name SecurityExchangeName	NASDAQ
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Entity Small Business EntitySmallBusiness	false
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	dei	Entity Shell Company EntityShellCompany	false
CY2022Q3	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	128317550	shares
CY2022Q2	us-gaap	Cash And Due From Banks CashAndDueFromBanks	193473000	usd
CY2021Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	209190000	usd
CY2022Q2	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	771374000	usd
CY2021Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	1441463000	usd
CY2022Q2	us-gaap	Cash Cash Equivalents And Federal Funds Sold CashCashEquivalentsAndFederalFundsSold	964847000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents And Federal Funds Sold CashCashEquivalentsAndFederalFundsSold	1650653000	usd
CY2022Q2	sfnc	Interest Bearing Balances Due From Banks Time InterestBearingBalancesDueFromBanksTime	1535000	usd
CY2021Q4	sfnc	Interest Bearing Balances Due From Banks Time InterestBearingBalancesDueFromBanksTime	1882000	usd
CY2022Q2	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	1381000	usd
CY2021Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	1279000	usd
CY2022Q2	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest After Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestAfterAllowanceForCreditLoss	3819682000	usd
CY2021Q4	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest After Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestAfterAllowanceForCreditLoss	1529221000	usd
CY2022Q2	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	4730178000	usd
CY2021Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	7130861000	usd
CY2022Q2	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	4341647000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	7113545000	usd
CY2022Q2	us-gaap	Debt Securities DebtSecurities	8161329000	usd
CY2021Q4	us-gaap	Debt Securities DebtSecurities	8642766000	usd
CY2022Q2	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	14437000	usd
CY2021Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	36356000	usd
CY2022Q2	sfnc	Assets Held For Sale Not Part Of Disposal Group Noncurrent Other AssetsHeldForSaleNotPartOfDisposalGroupNoncurrentOther	16375000	usd
CY2021Q4	sfnc	Assets Held For Sale Not Part Of Disposal Group Noncurrent Other AssetsHeldForSaleNotPartOfDisposalGroupNoncurrentOther	100000	usd
CY2022Q2	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	15110344000	usd
CY2021Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	12012503000	usd
CY2022Q2	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	212611000	usd
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	205332000	usd
CY2022Q2	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	14897733000	usd
CY2021Q4	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	11807171000	usd
CY2022Q2	sfnc	Property Plantand Equipmentand Rightof Use Assetafter Accumulated Depreciationand Amortization PropertyPlantandEquipmentandRightofUseAssetafterAccumulatedDepreciationandAmortization	553062000	usd
CY2021Q4	sfnc	Property Plantand Equipmentand Rightof Use Assetafter Accumulated Depreciationand Amortization PropertyPlantandEquipmentandRightofUseAssetafterAccumulatedDepreciationandAmortization	483469000	usd
CY2022Q2	us-gaap	Real Estate Acquired Through Foreclosure RealEstateAcquiredThroughForeclosure	4084000	usd
CY2021Q4	us-gaap	Real Estate Acquired Through Foreclosure RealEstateAcquiredThroughForeclosure	6032000	usd
CY2022Q2	us-gaap	Interest Receivable InterestReceivable	82332000	usd
CY2021Q4	us-gaap	Interest Receivable InterestReceivable	72990000	usd
CY2022Q2	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	486355000	usd
CY2021Q4	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	445305000	usd
CY2022Q2	us-gaap	Goodwill Goodwill	1310528000	usd
CY2021Q4	us-gaap	Goodwill Goodwill	1146007000	usd
CY2022Q2	us-gaap	Other Intangible Assets Net OtherIntangibleAssetsNet	137285000	usd
CY2021Q4	us-gaap	Other Intangible Assets Net OtherIntangibleAssetsNet	106235000	usd
CY2022Q2	us-gaap	Other Assets OtherAssets	588707000	usd
CY2021Q4	us-gaap	Other Assets OtherAssets	325793000	usd
CY2022Q2	us-gaap	Assets Assets	27218609000	usd
CY2021Q4	us-gaap	Assets Assets	24724759000	usd
CY2022Q2	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	6057186000	usd
CY2021Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	5325318000	usd
CY2022Q2	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	12816198000	usd
CY2021Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	11588770000	usd
CY2022Q2	us-gaap	Time Deposits TimeDeposits	3162479000	usd
CY2021Q4	us-gaap	Time Deposits TimeDeposits	2452460000	usd
CY2022Q2	us-gaap	Deposits Deposits	22035863000	usd
CY2021Q4	us-gaap	Deposits Deposits	19366548000	usd
CY2022Q2	us-gaap	Federal Funds Purchased And Securities Sold Under Agreements To Repurchase FederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase	155101000	usd
CY2021Q4	us-gaap	Federal Funds Purchased And Securities Sold Under Agreements To Repurchase FederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase	185403000	usd
CY2022Q2	us-gaap	Other Borrowings OtherBorrowings	1060244000	usd
CY2021Q4	us-gaap	Other Borrowings OtherBorrowings	1337973000	usd
CY2022Q2	us-gaap	Subordinated Debt SubordinatedDebt	421693000	usd
CY2021Q4	us-gaap	Subordinated Debt SubordinatedDebt	384131000	usd
CY2022Q2	us-gaap	Accounts Payable And Accrued Liabilities Current And Noncurrent AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	285813000	usd
CY2021Q4	us-gaap	Accounts Payable And Accrued Liabilities Current And Noncurrent AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	201863000	usd
CY2022Q2	us-gaap	Liabilities Liabilities	23958714000	usd
CY2021Q4	us-gaap	Liabilities Liabilities	21475918000	usd
CY2022Q2	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2021Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2022Q2	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	350000000	shares
CY2021Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	175000000	shares
CY2022Q2	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	128787764	shares
CY2022Q2	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	128787764	shares
CY2021Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	112715444	shares
CY2021Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	112715444	shares
CY2022Q2	us-gaap	Common Stock Value CommonStockValue	1288000	usd
CY2021Q4	us-gaap	Common Stock Value CommonStockValue	1127000	usd
CY2022Q2	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	2569060000	usd
CY2021Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	2164989000	usd
CY2022Q2	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1139975000	usd
CY2021Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1093270000	usd
CY2022Q2	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-450428000	usd
CY2021Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-10545000	usd
CY2022Q2	us-gaap	Stockholders Equity StockholdersEquity	3259895000	usd
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	3248841000	usd
CY2022Q2	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	27218609000	usd
CY2021Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	24724759000	usd
CY2022Q2	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	165641000	usd
CY2021Q2	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	138804000	usd
	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	292817000	usd
	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	285228000	usd
CY2022Q2	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	1117000	usd
CY2021Q2	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	651000	usd
	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	1766000	usd
	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	1449000	usd
CY2022Q2	us-gaap	Investment Income Interest InvestmentIncomeInterest	37848000	usd
CY2021Q2	us-gaap	Investment Income Interest InvestmentIncomeInterest	27128000	usd
	us-gaap	Investment Income Interest InvestmentIncomeInterest	71560000	usd
	us-gaap	Investment Income Interest InvestmentIncomeInterest	48701000	usd
CY2022Q2	sfnc	Interestand Fee Income Mortgage Loans Heldforsale InterestandFeeIncomeMortgageLoansHeldforsale	200000	usd
CY2021Q2	sfnc	Interestand Fee Income Mortgage Loans Heldforsale InterestandFeeIncomeMortgageLoansHeldforsale	386000	usd
	sfnc	Interestand Fee Income Mortgage Loans Heldforsale InterestandFeeIncomeMortgageLoansHeldforsale	390000	usd
	sfnc	Interestand Fee Income Mortgage Loans Heldforsale InterestandFeeIncomeMortgageLoansHeldforsale	1025000	usd
CY2022Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	204806000	usd
CY2021Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	166969000	usd
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	366533000	usd
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	336403000	usd
CY2022Q2	us-gaap	Interest Expense Deposits InterestExpenseDeposits	9754000	usd
CY2021Q2	us-gaap	Interest Expense Deposits InterestExpenseDeposits	10782000	usd
	us-gaap	Interest Expense Deposits InterestExpenseDeposits	16571000	usd
	us-gaap	Interest Expense Deposits InterestExpenseDeposits	23961000	usd
CY2022Q2	us-gaap	Interest Expense Federal Funds Purchased And Securities Sold Under Agreements To Repurchase InterestExpenseFederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase	119000	usd
CY2021Q2	us-gaap	Interest Expense Federal Funds Purchased And Securities Sold Under Agreements To Repurchase InterestExpenseFederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase	192000	usd
	us-gaap	Interest Expense Federal Funds Purchased And Securities Sold Under Agreements To Repurchase InterestExpenseFederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase	187000	usd
	us-gaap	Interest Expense Federal Funds Purchased And Securities Sold Under Agreements To Repurchase InterestExpenseFederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase	437000	usd
CY2022Q2	us-gaap	Interest Expense Other InterestExpenseOther	4844000	usd
CY2021Q2	us-gaap	Interest Expense Other InterestExpenseOther	4897000	usd
	us-gaap	Interest Expense Other InterestExpenseOther	9623000	usd
	us-gaap	Interest Expense Other InterestExpenseOther	9699000	usd
CY2022Q2	us-gaap	Interest Expense Subordinated Notes And Debentures InterestExpenseSubordinatedNotesAndDebentures	4990000	usd
CY2021Q2	us-gaap	Interest Expense Subordinated Notes And Debentures InterestExpenseSubordinatedNotesAndDebentures	4565000	usd
	us-gaap	Interest Expense Subordinated Notes And Debentures InterestExpenseSubordinatedNotesAndDebentures	9447000	usd
	us-gaap	Interest Expense Subordinated Notes And Debentures InterestExpenseSubordinatedNotesAndDebentures	9092000	usd
CY2022Q2	us-gaap	Interest Expense InterestExpense	19707000	usd
CY2021Q2	us-gaap	Interest Expense InterestExpense	20436000	usd
	us-gaap	Interest Expense InterestExpense	35828000	usd
	us-gaap	Interest Expense InterestExpense	43189000	usd
CY2022Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	185099000	usd
CY2021Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	146533000	usd
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	330705000	usd
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	293214000	usd
CY2022Q2	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	33859000	usd
CY2021Q2	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	-12951000	usd
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	13945000	usd
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	-11506000	usd
CY2022Q2	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	151240000	usd
CY2021Q2	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	159484000	usd
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	316760000	usd
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	304720000	usd
CY2022Q2	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	2563000	usd
CY2021Q2	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	2038000	usd
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	5269000	usd
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	3561000	usd
CY2022Q2	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	-150000	usd
CY2021Q2	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	5127000	usd
	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	-204000	usd
	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	10598000	usd
CY2022Q2	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	6837000	usd
CY2021Q2	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	8397000	usd
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	14103000	usd
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	18897000	usd
CY2022Q2	us-gaap	Noninterest Income NoninterestIncome	40178000	usd
CY2021Q2	us-gaap	Noninterest Income NoninterestIncome	47115000	usd
	us-gaap	Noninterest Income NoninterestIncome	82396000	usd
	us-gaap	Noninterest Income NoninterestIncome	96664000	usd
CY2022Q2	us-gaap	Labor And Related Expense LaborAndRelatedExpense	74135000	usd
CY2021Q2	us-gaap	Labor And Related Expense LaborAndRelatedExpense	60261000	usd
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	142041000	usd
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	120601000	usd
CY2022Q2	us-gaap	Occupancy Net OccupancyNet	11004000	usd
CY2021Q2	us-gaap	Occupancy Net OccupancyNet	9103000	usd
	us-gaap	Occupancy Net OccupancyNet	21027000	usd
	us-gaap	Occupancy Net OccupancyNet	18403000	usd
CY2022Q2	us-gaap	Equipment Expense EquipmentExpense	5104000	usd
CY2021Q2	us-gaap	Equipment Expense EquipmentExpense	4859000	usd
	us-gaap	Equipment Expense EquipmentExpense	9879000	usd
	us-gaap	Equipment Expense EquipmentExpense	10274000	usd
CY2022Q2	us-gaap	Foreclosed Real Estate Expense ForeclosedRealEstateExpense	142000	usd
CY2021Q2	us-gaap	Foreclosed Real Estate Expense ForeclosedRealEstateExpense	863000	usd
	us-gaap	Foreclosed Real Estate Expense ForeclosedRealEstateExpense	485000	usd
	us-gaap	Foreclosed Real Estate Expense ForeclosedRealEstateExpense	1206000	usd
CY2022Q2	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	2812000	usd
CY2021Q2	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	1687000	usd
	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	4650000	usd
	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	2995000	usd
CY2022Q2	us-gaap	Acquisition Costs AcquisitionCosts	19133000	usd
CY2021Q2	us-gaap	Acquisition Costs AcquisitionCosts	686000	usd
	us-gaap	Acquisition Costs AcquisitionCosts	21019000	usd
	us-gaap	Acquisition Costs AcquisitionCosts	919000	usd
CY2022Q2	us-gaap	Other Noninterest Expense OtherNoninterestExpense	44483000	usd
CY2021Q2	us-gaap	Other Noninterest Expense OtherNoninterestExpense	37198000	usd
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	86129000	usd
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	73261000	usd
CY2022Q2	us-gaap	Noninterest Expense NoninterestExpense	156813000	usd
CY2021Q2	us-gaap	Noninterest Expense NoninterestExpense	114657000	usd
	us-gaap	Noninterest Expense NoninterestExpense	285230000	usd
	us-gaap	Noninterest Expense NoninterestExpense	227659000	usd
CY2022Q2	us-gaap	Income Loss Attributable To Parent IncomeLossAttributableToParent	34605000	usd
CY2021Q2	us-gaap	Income Loss Attributable To Parent IncomeLossAttributableToParent	91942000	usd
	us-gaap	Income Loss Attributable To Parent IncomeLossAttributableToParent	113926000	usd
	us-gaap	Income Loss Attributable To Parent IncomeLossAttributableToParent	173725000	usd
CY2022Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7151000	usd
CY2021Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	17018000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	21377000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	31381000	usd
CY2022Q2	us-gaap	Net Income Loss NetIncomeLoss	27454000	usd
CY2021Q2	us-gaap	Net Income Loss NetIncomeLoss	74924000	usd
	us-gaap	Net Income Loss NetIncomeLoss	92549000	usd
	us-gaap	Net Income Loss NetIncomeLoss	142344000	usd
CY2022Q2	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	0	usd
CY2021Q2	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	13000	usd
	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	0	usd
	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	26000	usd
CY2022Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	27454000	usd
CY2021Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	74911000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	92549000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	142318000	usd
CY2022Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.21
CY2021Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.69
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.77
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.31
CY2022Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.21
CY2021Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.69
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.77
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.31
CY2022Q2	us-gaap	Net Income Loss NetIncomeLoss	27454000	usd
CY2021Q2	us-gaap	Net Income Loss NetIncomeLoss	74924000	usd
	us-gaap	Net Income Loss NetIncomeLoss	92549000	usd
	us-gaap	Net Income Loss NetIncomeLoss	142344000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	21333000	usd
CY2021Q2	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	71801000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-444375000	usd
	sfnc	Other Comprehensive Income Amortization Of Unrealized Gains Accretion Of Losses On Securities Transferred From Available For Sale To Held To Maturity OtherComprehensiveIncomeAmortizationOfUnrealizedGainsAccretionOfLossesOnSecuritiesTransferredFromAvailableForSaleToHeldToMaturity	0	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-53916000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-150000	usd
CY2021Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	5127000	usd
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-204000	usd
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	10598000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	22832000	usd
CY2021Q2	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	0	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	60031000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	0	usd
CY2022Q2	sfnc	Other Comprehensive Income Unrealized Gains On Securities Transferred From Available For Sale To Held To Maturity OtherComprehensiveIncomeUnrealizedGainsOnSecuritiesTransferredFromAvailableForSaleToHeldToMaturity	-206682000	usd
CY2021Q2	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
	sfnc	Other Comprehensive Income Unrealized Gains On Securities Transferred From Available For Sale To Held To Maturity OtherComprehensiveIncomeUnrealizedGainsOnSecuritiesTransferredFromAvailableForSaleToHeldToMaturity	0	usd
CY2022Q2	sfnc	Other Comprehensive Income Amortization Of Unrealized Gains Accretion Of Losses On Securities Transferred From Available For Sale To Held To Maturity OtherComprehensiveIncomeAmortizationOfUnrealizedGainsAccretionOfLossesOnSecuritiesTransferredFromAvailableForSaleToHeldToMaturity	4785000	usd
CY2021Q2	sfnc	Other Comprehensive Income Amortization Of Unrealized Gains Accretion Of Losses On Securities Transferred From Available For Sale To Held To Maturity OtherComprehensiveIncomeAmortizationOfUnrealizedGainsAccretionOfLossesOnSecuritiesTransferredFromAvailableForSaleToHeldToMaturity	0	usd
	sfnc	Other Comprehensive Income Amortization Of Unrealized Gains Accretion Of Losses On Securities Transferred From Available For Sale To Held To Maturity OtherComprehensiveIncomeAmortizationOfUnrealizedGainsAccretionOfLossesOnSecuritiesTransferredFromAvailableForSaleToHeldToMaturity	4701000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-167152000	usd
CY2021Q2	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	66674000	usd
	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-595523000	usd
	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-64514000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-43685000	usd
CY2021Q2	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	17425000	usd
	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-155640000	usd
	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-16861000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-123467000	usd
CY2021Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	49249000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-439883000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-47653000	usd
CY2022Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-96013000	usd
CY2021Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	124173000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-347334000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	94691000	usd
	us-gaap	Net Income Loss NetIncomeLoss	92549000	usd
	us-gaap	Net Income Loss NetIncomeLoss	142344000	usd
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	24230000	usd
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	23837000	usd
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	13945000	usd
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	-11506000	usd
	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	-204000	usd
	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	10598000	usd
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	24494000	usd
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	24377000	usd
	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	192000	usd
	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	269000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	8164000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	7592000	usd
	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	0	usd
	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	606000	usd
	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	290000	usd
	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	177000	usd
	us-gaap	Gain Loss On Sale Of Mortgage Loans GainLossOnSaleOfMortgageLoans	4333000	usd
	us-gaap	Gain Loss On Sale Of Mortgage Loans GainLossOnSaleOfMortgageLoans	20006000	usd
	us-gaap	Gain Loss On Sales Of Consumer Loans GainLossOnSalesOfConsumerLoans	228000	usd
	us-gaap	Gain Loss On Sales Of Consumer Loans GainLossOnSalesOfConsumerLoans	0	usd
	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	0	usd
	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	5300000	usd
	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-917000	usd
	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-6315000	usd
	sfnc	Bank Owned Life Insuranceand Death Benefits Income BankOwnedLifeInsuranceandDeathBenefitsIncome	5269000	usd
	sfnc	Bank Owned Life Insuranceand Death Benefits Income BankOwnedLifeInsuranceandDeathBenefitsIncome	3630000	usd
	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	329833000	usd
	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	534124000	usd
	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	356085000	usd
	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	655497000	usd
	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	1547000	usd
	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	-4680000	usd
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	2402000	usd
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	10064000	usd
	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	57874000	usd
	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	-58284000	usd
	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-245000	usd
	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	6786000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	177857000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	176310000	usd
	sfnc	Proceeds From Loan Originations And Principal Collections Net ProceedsFromLoanOriginationsAndPrincipalCollectionsNet	835002000	usd
	sfnc	Proceeds From Loan Originations And Principal Collections Net ProceedsFromLoanOriginationsAndPrincipalCollectionsNet	-1520504000	usd
	us-gaap	Proceeds From Sale Of Loans Receivable ProceedsFromSaleOfLoansReceivable	15556000	usd
	us-gaap	Proceeds From Sale Of Loans Receivable ProceedsFromSaleOfLoansReceivable	1847000	usd
	us-gaap	Proceeds From Payments For In Interest Bearing Deposits In Banks ProceedsFromPaymentsForInInterestBearingDepositsInBanks	347000	usd
	us-gaap	Proceeds From Payments For In Interest Bearing Deposits In Banks ProceedsFromPaymentsForInInterestBearingDepositsInBanks	244000	usd
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	17000000	usd
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	5829000	usd
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	0	usd
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	5156000	usd
	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	2819000	usd
	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	10988000	usd
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	usd
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	249454000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	762094000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	314547000	usd
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	259586000	usd
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	3672029000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	30848000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	9479000	usd
	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	329660000	usd
	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	606187000	usd
	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	0	usd
	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	160000000	usd
	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	0	usd
	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	3032000	usd
	sfnc	Proceeds From Divestiture Of Businesses Net Of Liabilities ProceedsFromDivestitureOfBusinessesNetOfLiabilities	0	usd
	sfnc	Proceeds From Divestiture Of Businesses Net Of Liabilities ProceedsFromDivestitureOfBusinessesNetOfLiabilities	-134166000	usd
	us-gaap	Proceeds From Previous Acquisition ProceedsFromPreviousAcquisition	276396000	usd
	us-gaap	Proceeds From Previous Acquisition ProceedsFromPreviousAcquisition	0	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-353188000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-2462960000	usd
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	-49701000	usd
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	1307965000	usd
	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	0	usd
	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	26000	usd
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	45844000	usd
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	39010000	usd
	us-gaap	Proceeds From Repayments Of Other Debt ProceedsFromRepaymentsOfOtherDebt	-315778000	usd
	us-gaap	Proceeds From Repayments Of Other Debt ProceedsFromRepaymentsOfOtherDebt	-2874000	usd
	us-gaap	Proceeds From Payments For In Securities Sold Under Agreements To Repurchase ProceedsFromPaymentsForInSecuritiesSoldUnderAgreementsToRepurchase	-30302000	usd
	us-gaap	Proceeds From Payments For In Securities Sold Under Agreements To Repurchase ProceedsFromPaymentsForInSecuritiesSoldUnderAgreementsToRepurchase	-111896000	usd
CY2022Q2	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	15110000000	usd
	sfnc	Proceeds From Payments For Issuanceof Shares Sharebased Payment Arrangement Including Option Exercised And Canceled ProceedsFromPaymentsForIssuanceofSharesSharebasedPaymentArrangementIncludingOptionExercisedAndCanceled	-3905000	usd
	sfnc	Proceeds From Payments For Issuanceof Shares Sharebased Payment Arrangement Including Option Exercised And Canceled ProceedsFromPaymentsForIssuanceofSharesSharebasedPaymentArrangementIncludingOptionExercisedAndCanceled	1373000	usd
	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	1151000	usd
	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	1170000	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	66096000	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	3080000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-510475000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	1153622000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-685806000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-1133028000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1650653000	usd
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	3472152000	usd
CY2022Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	964847000	usd
CY2021Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2339124000	usd
CY2022Q1	us-gaap	Stockholders Equity StockholdersEquity	2961607000	usd
CY2022Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-96013000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	94691000	usd
CY2022Q2	us-gaap	Stock Issued During Period Shares Share Based Compensation StockIssuedDuringPeriodSharesShareBasedCompensation	42459	shares
CY2022Q2	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	3893000	usd
CY2022Q2	us-gaap	Stock Issued During Period Shares Acquisitions StockIssuedDuringPeriodSharesAcquisitions	18275074	shares
CY2022Q2	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	464918000	usd
CY2022Q2	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	2035324	shares
CY2022Q2	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	50041000	usd
CY2022Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.19
CY2022Q2	us-gaap	Dividends Common Stock DividendsCommonStock	24469000	usd
CY2022Q2	us-gaap	Stockholders Equity StockholdersEquity	3259895000	usd
CY2021Q1	us-gaap	Stockholders Equity StockholdersEquity	2930775000	usd
CY2021Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	124173000	usd
CY2021Q2	us-gaap	Stock Issued During Period Shares Share Based Compensation StockIssuedDuringPeriodSharesShareBasedCompensation	40937	shares
CY2021Q2	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	3941000	usd
CY2021Q2	us-gaap	Dividends Preferred Stock DividendsPreferredStock	13000	usd
CY2021Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.18
CY2021Q2	us-gaap	Dividends Common Stock DividendsCommonStock	19510000	usd
CY2021Q2	us-gaap	Stockholders Equity StockholdersEquity	3039366000	usd
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	3248841000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-347334000	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	286820	shares
	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	4259000	usd
	us-gaap	Stock Issued During Period Shares Acquisitions StockIssuedDuringPeriodSharesAcquisitions	18275074	shares
	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	464918000	usd
	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	2549049	shares
	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	66096000	usd
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.38
	us-gaap	Dividends Common Stock DividendsCommonStock	45844000	usd
CY2022Q2	us-gaap	Stockholders Equity StockholdersEquity	3259895000	usd
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	2976656000	usd
	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	60697	shares
	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	1170000	usd
	us-gaap	Stock Issued During Period Shares Share Based Compensation StockIssuedDuringPeriodSharesShareBasedCompensation	379226	shares
	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	8965000	usd
	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	130916	shares
	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	3080000	usd
	us-gaap	Dividends Preferred Stock DividendsPreferredStock	26000	usd
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.36
	us-gaap	Dividends Common Stock DividendsCommonStock	39010000	usd
CY2021Q2	us-gaap	Stockholders Equity StockholdersEquity	3039366000	usd
CY2022Q2	sfnc	Number Of Financial Centers NumberOfFinancialCenters	233	center
	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	certain prior year amounts, have been reclassified to conform to the current year financial statement presentation. These changes and reclassifications did not impact previously reported net income or comprehensive income and were not material to the consolidated financial statements.
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
CY2022Q2	us-gaap	Held To Maturity Securities Transferred Security Unrealized Gain Loss HeldToMaturitySecuritiesTransferredSecurityUnrealizedGainLoss	-151900000	usd
CY2021Q3	us-gaap	Held To Maturity Securities Transferred Security Unrealized Gain Loss HeldToMaturitySecuritiesTransferredSecurityUnrealizedGainLoss	791000	usd
	sfnc	Debt Securities Available For Sale Transfer To Held To Maturity Gain Loss DebtSecuritiesAvailableForSaleTransferToHeldToMaturityGainLoss	0	usd
CY2022Q2	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss	3821063000	usd
CY2022Q2	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest	1381000	usd
CY2022Q2	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest After Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestAfterAllowanceForCreditLoss	3819682000	usd
CY2022Q2	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	4276000	usd
CY2022Q2	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	544996000	usd
CY2022Q2	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	3278962000	usd
CY2021Q4	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss	1530500000	usd
CY2021Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest	1279000	usd
CY2021Q4	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest After Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestAfterAllowanceForCreditLoss	1529221000	usd
CY2021Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	6398000	usd
CY2021Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	18241000	usd
CY2021Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	1517378000	usd
CY2022Q2	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	4730178000	usd
CY2022Q2	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	0	usd
CY2022Q2	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	1506000	usd
CY2022Q2	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	390037000	usd
CY2022Q2	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	4341647000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	7130861000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	0	usd
CY2021Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	44005000	usd
CY2021Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	61321000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	7113545000	usd
CY2022Q2	sfnc	Debt Securities Heldtomaturity Interest Receivable DebtSecuritiesHeldtomaturityInterestReceivable	15400000	usd
CY2022Q2	sfnc	Debt Securities Availableforsale Interest Receivable DebtSecuritiesAvailableforsaleInterestReceivable	20500000	usd
CY2022Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	3104616000	usd
CY2022Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	255386000	usd
CY2022Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	1095158000	usd
CY2022Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	134651000	usd
CY2022Q2	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	4199774000	usd
CY2022Q2	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	390037000	usd
CY2022Q2	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	4340000000	usd
CY2022Q2	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	4200000000	usd
CY2022Q2	sfnc	Debt Securities Unrealized Loss Position Quantitative Disclosure Percent DebtSecuritiesUnrealizedLossPositionQuantitativeDisclosurePercent	0.967
CY2022Q1	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest	1377000	usd
CY2022Q2	us-gaap	Debt Securities Held To Maturity Credit Loss Expense Reversal DebtSecuritiesHeldToMaturityCreditLossExpenseReversal	0	usd
CY2022Q2	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Writeoff DebtSecuritiesHeldToMaturityAllowanceForCreditLossWriteoff	0	usd
CY2022Q2	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Recovery DebtSecuritiesHeldToMaturityAllowanceForCreditLossRecovery	4000	usd
CY2022Q2	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest	1381000	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 Allowance For Credit Loss Writeoff DebtSecuritiesHeldToMaturityAllowanceForCreditLossWriteoff	0	usd
	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Recovery DebtSecuritiesHeldToMaturityAllowanceForCreditLossRecovery	102000	usd
CY2022Q2	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest	1381000	usd
CY2021Q1	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest	1618000	usd
CY2021Q2	us-gaap	Debt Securities Held To Maturity Credit Loss Expense Reversal DebtSecuritiesHeldToMaturityCreditLossExpenseReversal	-486000	usd
CY2021Q2	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest	1132000	usd
CY2021Q1	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	2454000	usd
CY2021Q2	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Not To Sell Before Recovery Credit Loss Previously Recorded Expense Reversal DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotToSellBeforeRecoveryCreditLossPreviouslyRecordedExpenseReversal	-2454000	usd
CY2021Q2	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	0	usd
CY2021Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	12010000000.00	usd
CY2020Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest	2915000	usd
	us-gaap	Debt Securities Held To Maturity Credit Loss Expense Reversal DebtSecuritiesHeldToMaturityCreditLossExpenseReversal	-1183000	usd
	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Writeoff DebtSecuritiesHeldToMaturityAllowanceForCreditLossWriteoff	600000	usd
CY2021Q2	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest	1132000	usd
CY2020Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	312000	usd
	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Securities Sold DebtSecuritiesAvailableForSaleAllowanceForCreditLossSecuritiesSold	11000	usd
	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Not To Sell Before Recovery Credit Loss Previously Recorded Expense Reversal DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotToSellBeforeRecoveryCreditLossPreviouslyRecordedExpenseReversal	-301000	usd
CY2021Q2	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	0	usd
CY2022Q2	sfnc	Debt Securities Available For Sale Credit Loss Expense Reversal DebtSecuritiesAvailableForSaleCreditLossExpenseReversal	0	usd
CY2021Q2	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Period Increase Decrease DebtSecuritiesAvailableForSaleAllowanceForCreditLossPeriodIncreaseDecrease	-2454000	usd
	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Period Increase Decrease DebtSecuritiesAvailableForSaleAllowanceForCreditLossPeriodIncreaseDecrease	-312000	usd
CY2022Q2	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	7556000	usd
CY2022Q2	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	171681000	usd
CY2022Q2	us-gaap	Investment Income Interest InvestmentIncomeInterest	37848000	usd
CY2021Q2	us-gaap	Investment Income Interest InvestmentIncomeInterest	27128000	usd
	us-gaap	Investment Income Interest InvestmentIncomeInterest	71560000	usd
	us-gaap	Investment Income Interest InvestmentIncomeInterest	48701000	usd
CY2022Q2	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount	3794000	usd
CY2022Q2	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Fair Value HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue	3813000	usd
CY2022Q2	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	4084000	usd
CY2022Q2	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	4077000	usd
CY2022Q2	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount	7513000	usd
CY2022Q2	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	167509000	usd
CY2022Q2	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount	313724000	usd
CY2022Q2	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	290805000	usd
CY2022Q2	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	278500000	usd
CY2022Q2	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	269311000	usd
CY2022Q2	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount	2251319000	usd
CY2022Q2	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue	1790105000	usd
CY2022Q2	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	1124785000	usd
CY2022Q2	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	936207000	usd
CY2022Q2	us-gaap	Held To Maturity Securities Debt Maturities Single Maturity Date Amortized Cost Basis HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis	1244713000	usd
CY2022Q2	us-gaap	Held To Maturity Securities Debt Maturities Single Maturity Date Fair Value HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateFairValue	1186683000	usd
CY2022Q2	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis	3150519000	usd
CY2022Q2	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate	2963934000	usd
CY2022Q2	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost	609000	usd
CY2022Q2	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue	609000	usd
CY2022Q2	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss	3821063000	usd
CY2022Q2	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	3278962000	usd
CY2022Q2	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	4730178000	usd
CY2022Q2	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	4341647000	usd
CY2022Q2	us-gaap	Debt Securities Available For Sale Restricted DebtSecuritiesAvailableForSaleRestricted	4160000000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Restricted DebtSecuritiesAvailableForSaleRestricted	3880000000	usd
CY2022Q2	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	150000	usd
	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	37000	usd
	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	240000	usd
CY2021Q2	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	5200000	usd
CY2021Q2	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	26000	usd
	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	10600000	usd
	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	39000	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
CY2022Q2	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	15110344000	usd
CY2021Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	12012503000	usd
	us-gaap	Financing Receivable Purchased With Credit Deterioration Discount Premium FinancingReceivablePurchasedWithCreditDeteriorationDiscountPremium	31800000	usd
CY2021	us-gaap	Financing Receivable Purchased With Credit Deterioration Discount Premium FinancingReceivablePurchasedWithCreditDeteriorationDiscountPremium	21500000	usd
CY2022Q2	us-gaap	Financing Receivable Accrued Interest Before Allowance For Credit Loss FinancingReceivableAccruedInterestBeforeAllowanceForCreditLoss	46500000	usd
CY2021Q4	us-gaap	Financing Receivable Accrued Interest Before Allowance For Credit Loss FinancingReceivableAccruedInterestBeforeAllowanceForCreditLoss	39800000	usd
CY2022Q2	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	62670000	usd
CY2021Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	68204000	usd
CY2022Q2	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	11800000	usd
CY2021Q4	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	14500000	usd
CY2022Q2	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	15110344000	usd
CY2022Q2	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	904000	usd
CY2021Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	12012503000	usd
CY2021Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	349000	usd
CY2022Q2	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	1	loan
	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	1	loan
CY2022Q2	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	13000	usd
	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	13000	usd
CY2021Q2	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	1	loan
	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	1	loan
CY2021Q2	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	784000	usd
	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	784000	usd
CY2022Q2	sfnc	Financing Receivable Collateral Dependent Amount FinancingReceivableCollateralDependentAmount	97500000	usd
CY2021Q4	sfnc	Financing Receivable Collateral Dependent Amount FinancingReceivableCollateralDependentAmount	47100000	usd
CY2022Q2	sfnc	Financing Receivable Collateral Dependent Amount FinancingReceivableCollateralDependentAmount	97493000	usd
CY2021Q2	us-gaap	Debt Securities Held To Maturity Credit Loss Expense Reversal DebtSecuritiesHeldToMaturityCreditLossExpenseReversal	-486000	usd
	us-gaap	Debt Securities Held To Maturity Credit Loss Expense Reversal DebtSecuritiesHeldToMaturityCreditLossExpenseReversal	0	usd
CY2021Q4	sfnc	Financing Receivable Collateral Dependent Amount FinancingReceivableCollateralDependentAmount	47089000	usd
CY2022Q2	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	25900000	usd
CY2021Q4	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	22400000	usd
	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	3500000	usd
CY2022Q2	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	3500000	usd
	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	0	usd
CY2021Q2	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	0	usd
CY2022Q2	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	30406000	usd
CY2021Q2	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-10011000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	10492000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-10011000	usd
CY2022Q2	sfnc	Provision For Unfunded Commitments ProvisionForUnfundedCommitments	3453000	usd
CY2021Q2	sfnc	Provision For Unfunded Commitments ProvisionForUnfundedCommitments	0	usd
	sfnc	Provision For Unfunded Commitments ProvisionForUnfundedCommitments	3453000	usd
	sfnc	Provision For Unfunded Commitments ProvisionForUnfundedCommitments	0	usd
CY2022Q2	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	-1183000	usd
CY2022Q2	sfnc	Debt Securities Available For Sale Credit Loss Expense Reversal DebtSecuritiesAvailableForSaleCreditLossExpenseReversal	0	usd
CY2021Q2	sfnc	Debt Securities Available For Sale Credit Loss Expense Reversal DebtSecuritiesAvailableForSaleCreditLossExpenseReversal	-2454000	usd
	sfnc	Debt Securities Available For Sale Credit Loss Expense Reversal DebtSecuritiesAvailableForSaleCreditLossExpenseReversal	0	usd
	sfnc	Debt Securities Available For Sale Credit Loss Expense Reversal DebtSecuritiesAvailableForSaleCreditLossExpenseReversal	-312000	usd
CY2022Q2	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	33859000	usd
CY2021Q2	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	-12951000	usd
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	13945000	usd
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	-11506000	usd
CY2022Q2	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	51879000	usd
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	48855000	usd
CY2022Q2	us-gaap	Operating Lease Liability OperatingLeaseLiability	52696000	usd
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	49321000	usd
CY2022Q2	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P8Y
CY2021Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y11M15D
CY2022Q2	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0202
CY2021Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0200
CY2022Q2	us-gaap	Operating Lease Expense OperatingLeaseExpense	3700000	usd
	us-gaap	Operating Lease Expense OperatingLeaseExpense	6900000	usd
CY2021Q2	us-gaap	Operating Lease Expense OperatingLeaseExpense	2900000	usd
	us-gaap	Operating Lease Expense OperatingLeaseExpense	5700000	usd
CY2022Q2	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	51879000	usd
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	48855000	usd
CY2022Q2	sfnc	Property Plantand Equipmentand Rightof Use Asset Accumulated Depreciationand Amortization PropertyPlantandEquipmentandRightofUseAssetAccumulatedDepreciationandAmortization	186829000	usd
CY2021Q4	sfnc	Property Plantand Equipmentand Rightof Use Asset Accumulated Depreciationand Amortization PropertyPlantandEquipmentandRightofUseAssetAccumulatedDepreciationandAmortization	171144000	usd
CY2022Q2	sfnc	Property Plantand Equipmentand Rightof Use Assetafter Accumulated Depreciationand Amortization PropertyPlantandEquipmentandRightofUseAssetafterAccumulatedDepreciationandAmortization	553062000	usd
CY2021Q4	sfnc	Property Plantand Equipmentand Rightof Use Assetafter Accumulated Depreciationand Amortization PropertyPlantandEquipmentandRightofUseAssetafterAccumulatedDepreciationandAmortization	483469000	usd
CY2022Q2	us-gaap	Goodwill Goodwill	1310000000	usd
CY2021Q4	us-gaap	Goodwill Goodwill	1150000000	usd
	us-gaap	Goodwill Period Increase Decrease GoodwillPeriodIncreaseDecrease	164500000	usd
CY2022Q2	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	usd
CY2022Q2	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	usd
CY2022Q2	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	137285000	usd
CY2021Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	106235000	usd
CY2022Q2	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	137285000	usd
CY2021Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	106235000	usd
CY2022Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense Remainder Of Fiscal Year FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear	8209000	usd
CY2022Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	16187000	usd
CY2022Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	15285000	usd
CY2022Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	12700000	usd
CY2022Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	12227000	usd
CY2022Q2	sfnc	Finite Lived Intangible Asset Expected Amortization After Year Four FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour	72677000	usd
CY2022Q2	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	137285000	usd
CY2022Q2	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	1010000000.00	usd
CY2021Q4	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	784900000	usd
CY2022Q2	us-gaap	Interest Bearing Domestic Deposit Brokered InterestBearingDomesticDepositBrokered	1350000000	usd
CY2021Q4	us-gaap	Interest Bearing Domestic Deposit Brokered InterestBearingDomesticDepositBrokered	466000000	usd
CY2022Q2	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	15341000	usd
CY2021Q2	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	13930000	usd
	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	20460000	usd
	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	25066000	usd
CY2022Q2	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-8190000	usd
CY2021Q2	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	3088000	usd
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	917000	usd
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	6315000	usd
CY2022Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7151000	usd
CY2021Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	17018000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	21377000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	31381000	usd
CY2022Q2	sfnc	Deferred Tax Assets Loans Acquired DeferredTaxAssetsLoansAcquired	7656000	usd
CY2021Q4	sfnc	Deferred Tax Assets Loans Acquired DeferredTaxAssetsLoansAcquired	4832000	usd
CY2022Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	50577000	usd
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	48462000	usd
CY2022Q2	sfnc	Deferred Tax Assets On Foreclosed Assets DeferredTaxAssetsOnForeclosedAssets	628000	usd
CY2021Q4	sfnc	Deferred Tax Assets On Foreclosed Assets DeferredTaxAssetsOnForeclosedAssets	628000	usd
CY2022Q2	us-gaap	Deferred Tax Assets Other Loss Carryforwards DeferredTaxAssetsOtherLossCarryforwards	13949000	usd
CY2021Q4	us-gaap	Deferred Tax Assets Other Loss Carryforwards DeferredTaxAssetsOtherLossCarryforwards	13537000	usd
CY2022Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	3545000	usd
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	3426000	usd
CY2022Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Other DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOther	5202000	usd
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Other DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOther	5776000	usd
CY2022Q2	sfnc	Deferred Tax Assets Acquired Securities DeferredTaxAssetsAcquiredSecurities	19795000	usd
CY2021Q4	sfnc	Deferred Tax Assets Acquired Securities DeferredTaxAssetsAcquiredSecurities	223000	usd
CY2022Q2	us-gaap	Financial Assets Sold Under Agreements To Repurchase Gross Including Not Subject To Master Netting Arrangement FinancialAssetsSoldUnderAgreementsToRepurchaseGrossIncludingNotSubjectToMasterNettingArrangement	146100000	usd
CY2022Q2	sfnc	Deferred Tax Assets Operating Lease Liabilities DeferredTaxAssetsOperatingLeaseLiabilities	12804000	usd
CY2021Q4	sfnc	Deferred Tax Assets Operating Lease Liabilities DeferredTaxAssetsOperatingLeaseLiabilities	11984000	usd
CY2022Q2	us-gaap	Deferred Tax Assets Unrealized Losses On Availablefor Sale Securities Gross DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross	139084000	usd
CY2021Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Availablefor Sale Securities Gross DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross	8164000	usd
CY2022Q2	sfnc	Deferred Tax Assets Tax Deferred Expense Reservesand Accruals Unfunded Commitments DeferredTaxAssetsTaxDeferredExpenseReservesandAccrualsUnfundedCommitments	6300000	usd
CY2021Q4	sfnc	Deferred Tax Assets Tax Deferred Expense Reservesand Accruals Unfunded Commitments DeferredTaxAssetsTaxDeferredExpenseReservesandAccrualsUnfundedCommitments	5442000	usd
CY2022Q2	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	6059000	usd
CY2021Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	7202000	usd
CY2022Q2	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	265599000	usd
CY2021Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	109676000	usd
CY2022Q2	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	45670000	usd
CY2021Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	38329000	usd
CY2022Q2	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	25183000	usd
CY2021Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	26347000	usd
CY2022Q2	sfnc	Deferred Tax Liabilities Operating Right Of Use Assets DeferredTaxLiabilitiesOperatingRightOfUseAssets	12605000	usd
CY2021Q4	sfnc	Deferred Tax Liabilities Operating Right Of Use Assets DeferredTaxLiabilitiesOperatingRightOfUseAssets	11871000	usd
CY2022Q2	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	0	usd
CY2021Q4	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	2767000	usd
CY2022Q2	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	4271000	usd
CY2021Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	3718000	usd
CY2022Q2	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	87729000	usd
CY2021Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	83032000	usd
CY2022Q2	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	177870000	usd
CY2021Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	26644000	usd
CY2022Q2	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	7267000	usd
CY2021Q2	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	19305000	usd
	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	23924000	usd
	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	36477000	usd
CY2022Q2	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-560000	usd
CY2021Q2	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	1488000	usd
	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	565000	usd
	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	3378000	usd
CY2022Q2	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	97000	usd
CY2021Q2	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-66000	usd
	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-105000	usd
	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	37000	usd
CY2022Q2	sfnc	Income Tax Rate Reconciliation Tax Exempt Interest Income IncomeTaxRateReconciliationTaxExemptInterestIncome	3619000	usd
CY2021Q2	sfnc	Income Tax Rate Reconciliation Tax Exempt Interest Income IncomeTaxRateReconciliationTaxExemptInterestIncome	2741000	usd
	sfnc	Income Tax Rate Reconciliation Tax Exempt Interest Income IncomeTaxRateReconciliationTaxExemptInterestIncome	7022000	usd
	sfnc	Income Tax Rate Reconciliation Tax Exempt Interest Income IncomeTaxRateReconciliationTaxExemptInterestIncome	5251000	usd
CY2022Q2	sfnc	Income Tax Reconciliation Bank Owned Life Insurance IncomeTaxReconciliationBankOwnedLifeInsurance	465000	usd
CY2021Q2	sfnc	Income Tax Reconciliation Bank Owned Life Insurance IncomeTaxReconciliationBankOwnedLifeInsurance	319000	usd
	sfnc	Income Tax Reconciliation Bank Owned Life Insurance IncomeTaxReconciliationBankOwnedLifeInsurance	890000	usd
	sfnc	Income Tax Reconciliation Bank Owned Life Insurance IncomeTaxReconciliationBankOwnedLifeInsurance	560000	usd
CY2022Q2	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	949000	usd
CY2021Q2	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	589000	usd
	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	1537000	usd
	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	1179000	usd
CY2022Q2	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	5380000	usd
CY2021Q2	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-60000	usd
	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	6442000	usd
	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-1521000	usd
CY2022Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7151000	usd
CY2021Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	17018000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	21377000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	31381000	usd
CY2021Q4	us-gaap	Financial Assets Sold Under Agreements To Repurchase Gross Including Not Subject To Master Netting Arrangement FinancialAssetsSoldUnderAgreementsToRepurchaseGrossIncludingNotSubjectToMasterNettingArrangement	170400000	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 June 30, 2022 and December 31, 2021 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 style="width:32.808%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:11.543%"/><td style="width:0.1%"/><td style="width:0.1%"/><td style="width:0.518%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:11.543%"/><td style="width:0.1%"/><td style="width:0.1%"/><td style="width:0.518%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:11.543%"/><td style="width:0.1%"/><td style="width:0.1%"/><td style="width:0.518%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:11.543%"/><td style="width:0.1%"/><td style="width:0.1%"/><td style="width:0.518%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:11.548%"/><td style="width:0.1%"/></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 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 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 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 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%">June 30, 2022</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 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 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 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 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 colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/></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%">146,101 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><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%">$</span></td><td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">— </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</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 colspan="3" style="background-color:#cceeff;padding:0 1pt"/><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%">$</span></td><td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">— </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</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%">146,101 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr style="height:14pt"><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;border-top:3pt double #000000;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;border-top:3pt double #000000;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;border-top:3pt double #000000;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;border-top:3pt double #000000;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;border-top:3pt double #000000;padding:0 1pt"/></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, 2021</span></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/></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 colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/></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%">$</span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">170,403 </span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td style="background-color:#cceeff;border-bottom:3pt double #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</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 colspan="3" style="background-color:#cceeff;padding:0 1pt"/><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%">$</span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">— </span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td style="background-color:#cceeff;border-bottom:3pt double #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</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 colspan="3" style="background-color:#cceeff;padding:0 1pt"/><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%">170,403 </span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr></table></div>
CY2022Q2	us-gaap	Long Term Debt LongTermDebt	1481937000	usd
CY2021Q4	us-gaap	Long Term Debt LongTermDebt	1722104000	usd
CY2022Q2	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	1030000000.00	usd
CY2021Q4	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	1310000000	usd
CY2022Q2	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Collateral Pledged1 FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1	4900000000	usd
CY2022Q2	sfnc	Advances From Federal Home Loan Bank Available AdvancesFromFederalHomeLoanBankAvailable	3700000000	usd
CY2022Q2	us-gaap	Long Term Debt Maturities Repayments Of Principal Remainder Of Fiscal Year LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear	777000	usd
CY2022Q2	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	1608000	usd
CY2022Q2	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	1693000	usd
CY2022Q2	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	4841000	usd
CY2022Q2	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	1844000	usd
CY2022Q2	sfnc	Long Term Debt Maturity After Year Four LongTermDebtMaturityAfterYearFour	446175000	usd
CY2022Q2	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	456938000	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
	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	513725	shares
	sfnc	Stock Repurchased During Period Value Average StockRepurchasedDuringPeriodValueAverage	31.25
CY2022Q2	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	2035324	shares
CY2022Q2	sfnc	Stock Repurchased During Period Value Average StockRepurchasedDuringPeriodValueAverage	24.59
	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	130916	shares
	sfnc	Stock Repurchased During Period Value Average StockRepurchasedDuringPeriodValueAverage	23.53
CY2021Q2	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	0	shares
	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	2000	shares
	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	13.89
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	0	shares
	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
CY2022Q2	us-gaap	Statutory Accounting Practices Statutory Amount Available For Dividend Payments Without Regulatory Approval StatutoryAccountingPracticesStatutoryAmountAvailableForDividendPaymentsWithoutRegulatoryApproval	232500000	usd
CY2022Q2	us-gaap	Tier One Leverage Capital Required To Be Well Capitalized To Average Assets TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets	0.05
CY2022Q2	us-gaap	Tier One Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets TierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.08
CY2022Q2	us-gaap	Capital Required To Be Well Capitalized To Risk Weighted Assets CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.10
CY2022Q2	sfnc	Common Equity Tier1 Ratio Required To Be Well Capitalized CommonEquityTier1RatioRequiredToBeWellCapitalized	0.065
CY2022Q2	sfnc	Capital Conservation Buffer CapitalConservationBuffer	0.025
CY2022Q2	us-gaap	Capital To Risk Weighted Assets CapitalToRiskWeightedAssets	0.1210
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	473000	shares
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	22.50
	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
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	0
CY2022Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	471000	shares
CY2022Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	22.54
CY2022Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	471000	shares
CY2022Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	22.54
	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Lower Range Limit ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit	10.65
	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Upper Range Limit ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit	24.07
CY2022Q2	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Outstanding Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions	471000	shares
	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Remaining Contractual Term2 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2	P3Y25D
CY2022Q2	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Exercise Price Beginning Balance1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1	22.54
CY2022Q2	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Exercisable Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions	471000	shares
CY2022Q2	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Exercisable Options Weighted Average Exercise Price1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1	22.54
CY2022Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	27454000	usd
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	8200000	usd
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	7600000	usd
CY2022Q2	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Stock Options EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions	0	usd
CY2022Q2	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Share Based Awards Other Than Options EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions	24100000	usd
	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P1Y9M18D
CY2022Q2	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	61000	usd
CY2022Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	61000	usd
CY2022Q2	us-gaap	Share Price SharePrice	21.26
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	1300000	usd
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2021Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	74911000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	92549000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	142318000	usd
CY2022Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	128313000	shares
CY2021Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	108362000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	120420000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	108286000	shares
CY2022Q2	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	407000	shares
CY2021Q2	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	460000	shares
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	407000	shares
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	460000	shares
CY2022Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	128720000	shares
CY2021Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	108822000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	120827000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	108746000	shares
CY2022Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.21
CY2021Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.69
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.77
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.31
CY2022Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.21
CY2021Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.69
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.77
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.31
	us-gaap	Interest Paid Net InterestPaidNet	36049000	usd
	us-gaap	Interest Paid Net InterestPaidNet	44281000	usd
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	4881000	usd
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-32980000	usd
	us-gaap	Transfer Of Other Real Estate TransferOfOtherRealEstate	0	usd
	us-gaap	Transfer Of Other Real Estate TransferOfOtherRealEstate	4368000	usd
CY2022Q2	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	6800000	usd
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	14100000	usd
CY2021Q2	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	8400000	usd
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	18900000	usd
	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	5900000	usd
CY2022Q2	us-gaap	Professional Fees ProfessionalFees	4202000	usd
CY2021Q2	us-gaap	Professional Fees ProfessionalFees	4561000	usd
	us-gaap	Professional Fees ProfessionalFees	9648000	usd
	us-gaap	Professional Fees ProfessionalFees	9808000	usd
CY2022Q2	us-gaap	Postage Expense PostageExpense	2217000	usd
CY2021Q2	us-gaap	Postage Expense PostageExpense	1943000	usd
	us-gaap	Postage Expense PostageExpense	4343000	usd
	us-gaap	Postage Expense PostageExpense	4313000	usd
CY2022Q2	us-gaap	Communication Communication	1695000	usd
CY2021Q2	us-gaap	Communication Communication	1610000	usd
	us-gaap	Communication Communication	3253000	usd
	us-gaap	Communication Communication	3242000	usd
CY2022Q2	sfnc	Credit Card Expense CreditCardExpense	3037000	usd
CY2021Q2	sfnc	Credit Card Expense CreditCardExpense	2530000	usd
	sfnc	Credit Card Expense CreditCardExpense	5743000	usd
	sfnc	Credit Card Expense CreditCardExpense	4861000	usd
CY2022Q2	us-gaap	Marketing Expense MarketingExpense	8754000	usd
CY2021Q2	us-gaap	Marketing Expense MarketingExpense	4740000	usd
	us-gaap	Marketing Expense MarketingExpense	14894000	usd
	us-gaap	Marketing Expense MarketingExpense	7893000	usd
CY2022Q2	sfnc	Softwareand Technology Expense SoftwareandTechnologyExpense	10078000	usd
CY2021Q2	sfnc	Softwareand Technology Expense SoftwareandTechnologyExpense	9857000	usd
	sfnc	Softwareand Technology Expense SoftwareandTechnologyExpense	20225000	usd
	sfnc	Softwareand Technology Expense SoftwareandTechnologyExpense	20108000	usd
CY2022Q2	us-gaap	Supplies Expense SuppliesExpense	713000	usd
CY2021Q2	us-gaap	Supplies Expense SuppliesExpense	838000	usd
	us-gaap	Supplies Expense SuppliesExpense	1411000	usd
	us-gaap	Supplies Expense SuppliesExpense	1408000	usd
CY2022Q2	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	4096000	usd
CY2021Q2	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	3332000	usd
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	7582000	usd
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	6676000	usd
CY2022Q2	sfnc	Branch Right Sizing Expense BranchRightSizingExpense	292000	usd
CY2021Q2	sfnc	Branch Right Sizing Expense BranchRightSizingExpense	468000	usd
	sfnc	Branch Right Sizing Expense BranchRightSizingExpense	1201000	usd
	sfnc	Branch Right Sizing Expense BranchRightSizingExpense	1093000	usd
CY2022Q2	us-gaap	Other General Expense OtherGeneralExpense	9399000	usd
CY2021Q2	us-gaap	Other General Expense OtherGeneralExpense	7319000	usd
	us-gaap	Other General Expense OtherGeneralExpense	17829000	usd
	us-gaap	Other General Expense OtherGeneralExpense	13859000	usd
CY2022Q2	us-gaap	Other Noninterest Expense OtherNoninterestExpense	44483000	usd
CY2021Q2	us-gaap	Other Noninterest Expense OtherNoninterestExpense	37198000	usd
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	86129000	usd
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	73261000	usd
CY2022Q2	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	41300000	usd
CY2021Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	37700000	usd
CY2022Q2	sfnc	Derivative Instrument Covenant Maximum Outstanding Notional Contract Amount Percent Of Assets DerivativeInstrumentCovenantMaximumOutstandingNotionalContractAmountPercentOfAssets	0.10
CY2022Q2	us-gaap	Hedged Asset Fair Value Hedge HedgedAssetFairValueHedge	821820	usd
CY2021Q4	us-gaap	Hedged Asset Fair Value Hedge HedgedAssetFairValueHedge	1063173	usd
CY2022Q2	us-gaap	Hedged Asset Fair Value Hedge Cumulative Increase Decrease HedgedAssetFairValueHedgeCumulativeIncreaseDecrease	69744000	usd
CY2021Q4	us-gaap	Hedged Asset Fair Value Hedge Cumulative Increase Decrease HedgedAssetFairValueHedgeCumulativeIncreaseDecrease	10524000	usd
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
CY2022Q2	us-gaap	Held To Maturity Securities Transferred Security Unrealized Gain Loss HeldToMaturitySecuritiesTransferredSecurityUnrealizedGainLoss	-151900000	usd
CY2021Q3	us-gaap	Held To Maturity Securities Transferred Security Unrealized Gain Loss HeldToMaturitySecuritiesTransferredSecurityUnrealizedGainLoss	791000	usd
	sfnc	Debt Securities Available For Sale Transfer To Held To Maturity Gain Loss DebtSecuritiesAvailableForSaleTransferToHeldToMaturityGainLoss	0	usd

Files In Submission

Name	View Source	Status
0001628280-22-021295-index-headers.html	Edgar Link	pending
0001628280-22-021295-index.html	Edgar Link	pending
0001628280-22-021295.txt	Edgar Link	pending
0001628280-22-021295-xbrl.zip	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R100.htm	Edgar Link	pending
R101.htm	Edgar Link	pending
R102.htm	Edgar Link	pending
R103.htm	Edgar Link	pending
R104.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
R12.htm	Edgar Link	pending
R13.htm	Edgar Link	pending
R14.htm	Edgar Link	pending
R15.htm	Edgar Link	pending
R16.htm	Edgar Link	pending
R17.htm	Edgar Link	pending
R18.htm	Edgar Link	pending
R19.htm	Edgar Link	pending
R2.htm	Edgar Link	pending
R20.htm	Edgar Link	pending
R21.htm	Edgar Link	pending
R22.htm	Edgar Link	pending
R23.htm	Edgar Link	pending
R24.htm	Edgar Link	pending
R25.htm	Edgar Link	pending
R26.htm	Edgar Link	pending
R27.htm	Edgar Link	pending
R28.htm	Edgar Link	pending
R29.htm	Edgar Link	pending
R3.htm	Edgar Link	pending
R30.htm	Edgar Link	pending
R31.htm	Edgar Link	pending
R32.htm	Edgar Link	pending
R33.htm	Edgar Link	pending
R34.htm	Edgar Link	pending
R35.htm	Edgar Link	pending
R36.htm	Edgar Link	pending
R37.htm	Edgar Link	pending
R38.htm	Edgar Link	pending
R39.htm	Edgar Link	pending
R4.htm	Edgar Link	pending
R40.htm	Edgar Link	pending
R41.htm	Edgar Link	pending
R42.htm	Edgar Link	pending
R43.htm	Edgar Link	pending
R44.htm	Edgar Link	pending
R45.htm	Edgar Link	pending
R46.htm	Edgar Link	pending
R47.htm	Edgar Link	pending
R48.htm	Edgar Link	pending
R49.htm	Edgar Link	pending
R5.htm	Edgar Link	pending
R50.htm	Edgar Link	pending
R51.htm	Edgar Link	pending
R52.htm	Edgar Link	pending
R53.htm	Edgar Link	pending
R54.htm	Edgar Link	pending
R55.htm	Edgar Link	pending
R56.htm	Edgar Link	pending
R57.htm	Edgar Link	pending
R58.htm	Edgar Link	pending
R59.htm	Edgar Link	pending
R6.htm	Edgar Link	pending
R60.htm	Edgar Link	pending
R61.htm	Edgar Link	pending
R62.htm	Edgar Link	pending
R63.htm	Edgar Link	pending
R64.htm	Edgar Link	pending
R65.htm	Edgar Link	pending
R66.htm	Edgar Link	pending
R67.htm	Edgar Link	pending
R68.htm	Edgar Link	pending
R69.htm	Edgar Link	pending
R7.htm	Edgar Link	pending
R70.htm	Edgar Link	pending
R71.htm	Edgar Link	pending
R72.htm	Edgar Link	pending
R73.htm	Edgar Link	pending
R74.htm	Edgar Link	pending
R75.htm	Edgar Link	pending
R76.htm	Edgar Link	pending
R77.htm	Edgar Link	pending
R78.htm	Edgar Link	pending
R79.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R80.htm	Edgar Link	pending
R81.htm	Edgar Link	pending
R82.htm	Edgar Link	pending
R83.htm	Edgar Link	pending
R84.htm	Edgar Link	pending
R85.htm	Edgar Link	pending
R86.htm	Edgar Link	pending
R87.htm	Edgar Link	pending
R88.htm	Edgar Link	pending
R89.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
R90.htm	Edgar Link	pending
R91.htm	Edgar Link	pending
R92.htm	Edgar Link	pending
R93.htm	Edgar Link	pending
R94.htm	Edgar Link	pending
R95.htm	Edgar Link	pending
R96.htm	Edgar Link	pending
R97.htm	Edgar Link	pending
R98.htm	Edgar Link	pending
R99.htm	Edgar Link	pending
report.css	Edgar Link	pending
sfnc-063022xex151.htm	Edgar Link	pending
sfnc-063022xex311.htm	Edgar Link	pending
sfnc-063022xex312.htm	Edgar Link	pending
sfnc-063022xex313.htm	Edgar Link	pending
sfnc-063022xex321.htm	Edgar Link	pending
sfnc-063022xex322.htm	Edgar Link	pending
sfnc-063022xex323.htm	Edgar Link	pending
sfnc-20220630.htm	Edgar Link	pending
sfnc-20220630.xsd	Edgar Link	pending
sfnc-20220630_cal.xml	Edgar Link	unprocessable
sfnc-20220630_def.xml	Edgar Link	unprocessable
sfnc-20220630_g1.jpg	Edgar Link	pending
sfnc-20220630_htm.xml	Edgar Link	completed
sfnc-20220630_lab.xml	Edgar Link	unprocessable
sfnc-20220630_pre.xml	Edgar Link	unprocessable
Show.js	Edgar Link	pending

Create your account

Find Stocks Worth Researching

Deeply Understand Businesses

Value Businesses Intelligently

$SFNC
SIMMONS FIRST NATIONAL CORP Stock $sfnc

2022 Q3 Form 10-Q Financial Statement

#000162828022021295 Filed on August 05, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SFNC SIMMONS FIRST NATIONAL CORP Stock $sfnc

2022 Q3 Form 10-Q Financial Statement

#000162828022021295 Filed on August 05, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SFNC
SIMMONS FIRST NATIONAL CORP Stock $sfnc