$EFSC
Enterprise Financial Services Corp Stock $efsc

$efsc Overview Financials Valuation SEC Filings Company Website

2020 Q4 Form 10-K Financial Statement

#000102583521000018 Filed on February 19, 2021

Income Statement

Concept	2020 Q4	2019 Q4	2019 Q3
Revenue	$84.11M	$77.24M	$81.08M
YoY Change	8.9%	20.68%	33.45%
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	$3.000M	$3.000M	$3.100M
YoY Change	0.0%	100.0%	106.67%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$6.667M	$15.63M	$18.03M
YoY Change	-57.33%	16.53%	42.39%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$35.44M	$36.34M	$36.54M
YoY Change	-2.47%	27.82%	50.25%
Income Tax	$6.508M	$7.246M	$7.469M
% Of Pretax Income	18.36%	19.94%	20.44%
Net Earnings	$28.93M	$29.09M	$29.07M
YoY Change	-0.55%	23.63%	29.1%
Net Earnings / Revenue	34.4%	37.66%	35.85%
Basic Earnings Per Share	$1.00	$1.10	$1.09
Diluted Earnings Per Share	$1.00	$1.09	$1.08
COMMON SHARES
Basic Shares Outstanding	26.21M shares	26.52M shares	26.78M shares
Diluted Shares Outstanding			26.87M shares

Balance Sheet

Concept	2020 Q4	2019 Q4	2019 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$537.7M	$167.3M	$256.5M
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	$53.17M	$60.01M	$59.22M
YoY Change	-11.4%	86.9%	83.03%
Goodwill	$260.6M	$210.3M	$211.3M
YoY Change	23.88%	79.25%	80.07%
Intangibles	$23.08M	$26.08M	$27.63M
YoY Change	-11.47%	204.88%	201.99%
Long-Term Investments
YoY Change
Other Assets
YoY Change
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$9.752B	$7.334B	$7.347B
YoY Change	32.97%	29.9%	33.15%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses		$15.00M	$14.00M
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$301.0M	$265.0M	$200.0M
YoY Change	13.58%	18.83%	23.46%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$301.0M	$15.00M	$14.00M
YoY Change	1906.67%	650.0%	600.0%
LONG-TERM LIABILITIES
Long-Term Debt	$204.0M	$141.0M	$141.0M
YoY Change	44.68%	19.49%	19.49%
Other Long-Term Liabilities	$132.0M	$51.00M	$60.00M
YoY Change	158.82%	27.5%	62.16%
Total Long-Term Liabilities	$336.0M	$192.0M	$201.0M
YoY Change	75.0%	21.52%	29.68%
TOTAL LIABILITIES
Total Short-Term Liabilities	$301.0M	$15.00M	$14.00M
Total Long-Term Liabilities	$336.0M	$192.0M	$201.0M
Total Liabilities	$8.673B	$6.467B	$6.501B
YoY Change	34.11%	28.26%	31.84%
SHAREHOLDERS EQUITY
Retained Earnings	$417.2M	$380.7M	$356.2M
YoY Change	9.58%	25.01%	25.4%
Common Stock	$332.0K	$281.0K	$280.0K
YoY Change	18.15%	17.57%	17.15%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$73.53M	$58.18M	$54.47M
YoY Change	26.38%	36.4%	80.92%
Treasury Stock Shares	1.980M shares	1.524M shares	1.430M shares
Shareholders Equity	$1.079B	$867.2M	$846.1M
YoY Change
Total Liabilities & Shareholders Equity	$9.752B	$7.334B	$7.347B
YoY Change	32.97%	29.9%	33.15%

Cashflow Statement

Concept	2020 Q4	2019 Q4	2019 Q3
OPERATING ACTIVITIES
Net Income	$28.93M	$29.09M	$29.07M
YoY Change	-0.55%	23.63%	29.1%
Depreciation, Depletion And Amortization	$3.000M	$3.000M	$3.100M
YoY Change	0.0%	100.0%	106.67%
Cash From Operating Activities	$35.30M	$25.90M	$46.00M
YoY Change	36.29%	-47.03%	475.0%
INVESTING ACTIVITIES
Capital Expenditures	-$700.0K	-$2.300M	-$1.800M
YoY Change	-69.57%	283.33%	260.0%
Acquisitions
YoY Change
Other Investing Activities	$111.7M	-$78.40M	-$100.0M
YoY Change	-242.47%	-22.53%	434.76%
Cash From Investing Activities	$111.1M	-$80.70M	-$101.8M
YoY Change	-237.67%	-20.73%	430.21%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-800.0K	-34.30M	122.8M
YoY Change	-97.67%	-136.76%	-1328.0%
NET CHANGE
Cash From Operating Activities	35.30M	25.90M	46.00M
Cash From Investing Activities	111.1M	-80.70M	-101.8M
Cash From Financing Activities	-800.0K	-34.30M	122.8M
Net Change In Cash	145.6M	-89.10M	67.00M
YoY Change	-263.41%	-320.54%	-416.04%
FREE CASH FLOW
Cash From Operating Activities	$35.30M	$25.90M	$46.00M
Capital Expenditures	-$700.0K	-$2.300M	-$1.800M
Free Cash Flow	$36.00M	$28.20M	$47.80M
YoY Change	27.66%	-43.03%	462.35%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2020	dei	Entity Central Index Key EntityCentralIndexKey	0001025835
CY2020	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-12-31
CY2020	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
CY2020	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2020	dei	Amendment Flag AmendmentFlag	false
CY2020Q4	efsc	Collateral Pledged CollateralPledged	36525000	USD
CY2019Q4	efsc	Collateral Pledged CollateralPledged	15285000	USD
CY2020Q4	efsc	State Tax Credits Held For Sale Carriedat Fair Value StateTaxCreditsHeldForSaleCarriedatFairValue	0	USD
CY2019Q4	efsc	State Tax Credits Held For Sale Carriedat Fair Value StateTaxCreditsHeldForSaleCarriedatFairValue	0	USD
CY2020Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2019Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2020Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2019Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2020Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2019Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2020Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2019Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2020Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2019Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2020Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	45000000	shares
CY2019Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	45000000	shares
CY2020Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	33190306	shares
CY2019Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	28067087	shares
CY2020Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	1980093	shares
CY2019Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	1523842	shares
CY2020	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.72
CY2019	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.62
CY2018	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.47
CY2020	us-gaap	Stock Issued During Period Shares Share Based Compensation StockIssuedDuringPeriodSharesShareBasedCompensation	146005	shares
CY2019	us-gaap	Stock Issued During Period Shares Share Based Compensation StockIssuedDuringPeriodSharesShareBasedCompensation	174895	shares
CY2018	us-gaap	Stock Issued During Period Shares Share Based Compensation StockIssuedDuringPeriodSharesShareBasedCompensation	157882	shares
CY2020	us-gaap	Stock Issued During Period Shares Conversion Of Convertible Securities StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities	0	shares
CY2019	us-gaap	Stock Issued During Period Shares Conversion Of Convertible Securities StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities	0	shares
CY2018	us-gaap	Stock Issued During Period Shares Conversion Of Convertible Securities StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities	0	shares
CY2020Q4	efsc	Shares Awarded Through Acquisition SharesAwardedThroughAcquisition	4977214	shares
CY2019Q4	efsc	Shares Awarded Through Acquisition SharesAwardedThroughAcquisition	3990822	shares
CY2018Q4	efsc	Shares Awarded Through Acquisition SharesAwardedThroughAcquisition	0	shares
CY2020	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	0	shares
CY2019	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	396737	shares
CY2018	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	435432	shares
CY2020	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	156000	shares
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	21000	shares
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
CY2020Q4	efsc	Maximum Percentage Of Shareholders Equity Security Holdings Held Of One Issuer MaximumPercentageOfShareholdersEquitySecurityHoldingsHeldOfOneIssuer	0.10
CY2020Q4	us-gaap	Derivative Liability Notional Amount DerivativeLiabilityNotionalAmount	0.0	USD
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Period1 ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1	P3Y
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Period1 ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1	P3Y
CY2020	dei	Entity File Number EntityFileNumber	001-15373
CY2020	dei	Document Type DocumentType	10-K
CY2020	dei	Document Annual Report DocumentAnnualReport	true
CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-12-31
CY2020	dei	Document Transition Report DocumentTransitionReport	false
CY2020	dei	Entity Registrant Name EntityRegistrantName	ENTERPRISE FINANCIAL SERVICES CORP
CY2020	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2020	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	43-1706259
CY2020	dei	Entity Address Address Line1 EntityAddressAddressLine1	150 North Meramec Avenue
CY2020	dei	Entity Address City Or Town EntityAddressCityOrTown	Clayton
CY2020	dei	Entity Address State Or Province EntityAddressStateOrProvince	MO
CY2020	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	63105
CY2020	dei	City Area Code CityAreaCode	314
CY2020	dei	Local Phone Number LocalPhoneNumber	725-5500
CY2020	dei	Security12b Title Security12bTitle	Common Stock, par value $.01 per share
CY2020	dei	Trading Symbol TradingSymbol	EFSC
CY2020	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2020	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2020	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2021Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	31225229	shares
CY2020Q2	dei	Entity Public Float EntityPublicFloat	740426000	USD
CY2020	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2020	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2020	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2020	dei	Entity Small Business EntitySmallBusiness	false
CY2020	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2020	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2020	dei	Entity Shell Company EntityShellCompany	false
CY2020Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	99760000	USD
CY2019Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	74769000	USD
CY2020Q4	us-gaap	Federal Funds Sold FederalFundsSold	1519000	USD
CY2019Q4	us-gaap	Federal Funds Sold FederalFundsSold	3060000	USD
CY2020Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	436424000	USD
CY2019Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	89427000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents And Federal Funds Sold CashCashEquivalentsAndFederalFundsSold	537703000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents And Federal Funds Sold CashCashEquivalentsAndFederalFundsSold	167256000	USD
CY2020Q4	efsc	Interest Bearing Deposits Greater Than90 Days InterestBearingDepositsGreaterThan90Days	7626000	USD
CY2019Q4	efsc	Interest Bearing Deposits Greater Than90 Days InterestBearingDepositsGreaterThan90Days	3730000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	912429000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1135317000	USD
CY2020Q4	efsc	Debt Securities Held To Maturity Net Of Allowance For Credit Losses DebtSecuritiesHeldToMaturityNetOfAllowanceForCreditLosses	487610000	USD
CY2019Q4	efsc	Debt Securities Held To Maturity Net Of Allowance For Credit Losses DebtSecuritiesHeldToMaturityNetOfAllowanceForCreditLosses	181166000	USD
CY2020Q4	us-gaap	Trade And Loans Receivables Held For Sale Net Not Part Of Disposal Group TradeAndLoansReceivablesHeldForSaleNetNotPartOfDisposalGroup	13564000	USD
CY2019Q4	us-gaap	Trade And Loans Receivables Held For Sale Net Not Part Of Disposal Group TradeAndLoansReceivablesHeldForSaleNetNotPartOfDisposalGroup	5570000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	7224935000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	5314337000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	136671000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	43288000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	7088264000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	5271049000	USD
CY2020Q4	us-gaap	Other Investments And Securities At Cost OtherInvestmentsAndSecuritiesAtCost	48764000	USD
CY2019Q4	us-gaap	Other Investments And Securities At Cost OtherInvestmentsAndSecuritiesAtCost	38044000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	53169000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	60013000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	260567000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	210344000	USD
CY2020Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	23084000	USD
CY2019Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	26076000	USD
CY2020Q4	us-gaap	Prepaid Expense And Other Assets PrepaidExpenseAndOtherAssets	318791000	USD
CY2019Q4	us-gaap	Prepaid Expense And Other Assets PrepaidExpenseAndOtherAssets	235226000	USD
CY2020Q4	us-gaap	Assets Assets	9751571000	USD
CY2019Q4	us-gaap	Assets Assets	7333791000	USD
CY2020Q4	us-gaap	Noninterest Bearing Domestic Deposit Demand NoninterestBearingDomesticDepositDemand	2711828000	USD
CY2019Q4	us-gaap	Noninterest Bearing Domestic Deposit Demand NoninterestBearingDomesticDepositDemand	1327348000	USD
CY2020Q4	us-gaap	Interest Bearing Domestic Deposit Checking InterestBearingDomesticDepositChecking	1768497000	USD
CY2019Q4	us-gaap	Interest Bearing Domestic Deposit Checking InterestBearingDomesticDepositChecking	1367444000	USD
CY2020Q4	us-gaap	Deposits Money Market Deposits DepositsMoneyMarketDeposits	2327066000	USD
CY2019Q4	us-gaap	Deposits Money Market Deposits DepositsMoneyMarketDeposits	1713615000	USD
CY2020Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	627903000	USD
CY2019Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	536169000	USD
CY2020Q4	us-gaap	Interest Bearing Domestic Deposit Brokered InterestBearingDomesticDepositBrokered	50209000	USD
CY2019Q4	us-gaap	Interest Bearing Domestic Deposit Brokered InterestBearingDomesticDepositBrokered	215758000	USD
CY2020Q4	us-gaap	Interest Bearing Domestic Deposit Other Time Deposit InterestBearingDomesticDepositOtherTimeDeposit	499886000	USD
CY2019Q4	us-gaap	Interest Bearing Domestic Deposit Other Time Deposit InterestBearingDomesticDepositOtherTimeDeposit	610689000	USD
CY2020Q4	us-gaap	Deposits Deposits	7985389000	USD
CY2019Q4	us-gaap	Deposits Deposits	5771023000	USD
CY2020Q4	us-gaap	Subordinated Debt SubordinatedDebt	203637000	USD
CY2019Q4	us-gaap	Subordinated Debt SubordinatedDebt	141258000	USD
CY2020Q4	us-gaap	Federal Home Loan Bank Advances Long Term FederalHomeLoanBankAdvancesLongTerm	50000000	USD
CY2019Q4	us-gaap	Federal Home Loan Bank Advances Long Term FederalHomeLoanBankAdvancesLongTerm	222406000	USD
CY2020Q4	us-gaap	Other Borrowings OtherBorrowings	271081000	USD
CY2019Q4	us-gaap	Other Borrowings OtherBorrowings	230886000	USD
CY2020Q4	us-gaap	Notes Payable To Bank NotesPayableToBank	30000000	USD
CY2019Q4	us-gaap	Notes Payable To Bank NotesPayableToBank	34286000	USD
CY2020Q4	us-gaap	Other Liabilities OtherLiabilities	132489000	USD
CY2019Q4	us-gaap	Other Liabilities OtherLiabilities	66747000	USD
CY2020Q4	us-gaap	Liabilities Liabilities	8672596000	USD
CY2019Q4	us-gaap	Liabilities Liabilities	6466606000	USD
CY2020Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2019Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2020Q4	us-gaap	Common Stock Value CommonStockValue	332000	USD
CY2019Q4	us-gaap	Common Stock Value CommonStockValue	281000	USD
CY2020Q4	us-gaap	Treasury Stock Value TreasuryStockValue	73528000	USD
CY2019Q4	us-gaap	Treasury Stock Value TreasuryStockValue	58181000	USD
CY2020Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	697839000	USD
CY2019Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	526599000	USD
CY2020Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	417212000	USD
CY2019Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	380737000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	37120000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	17749000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	1078975000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	867185000	USD
CY2020Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	9751571000	USD
CY2019Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	7333791000	USD
CY2020	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	270238000	USD
CY2019	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	269406000	USD
CY2018	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	217212000	USD
CY2020	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	24629000	USD
CY2018	us-gaap	Interest Expense Deposits InterestExpenseDeposits	33769000	USD
CY2019	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	29030000	USD
CY2018	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	17469000	USD
CY2020	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	8397000	USD
CY2019	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	3515000	USD
CY2018	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	1074000	USD
CY2020	us-gaap	Interest Income Domestic Deposits InterestIncomeDomesticDeposits	620000	USD
CY2019	us-gaap	Interest Income Domestic Deposits InterestIncomeDomesticDeposits	2128000	USD
CY2018	us-gaap	Interest Income Domestic Deposits InterestIncomeDomesticDeposits	1141000	USD
CY2020	us-gaap	Dividend Income Operating DividendIncomeOperating	895000	USD
CY2019	us-gaap	Dividend Income Operating DividendIncomeOperating	1055000	USD
CY2018	us-gaap	Dividend Income Operating DividendIncomeOperating	906000	USD
CY2020	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	304779000	USD
CY2019	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	305134000	USD
CY2018	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	237802000	USD
CY2020	us-gaap	Interest Expense Deposits InterestExpenseDeposits	21049000	USD
CY2019	us-gaap	Interest Expense Deposits InterestExpenseDeposits	49856000	USD
CY2020	us-gaap	Interest Expense Subordinated Notes And Debentures InterestExpenseSubordinatedNotesAndDebentures	9885000	USD
CY2019	us-gaap	Interest Expense Subordinated Notes And Debentures InterestExpenseSubordinatedNotesAndDebentures	7507000	USD
CY2018	us-gaap	Interest Expense Federal Home Loan Bank And Federal Reserve Bank Advances Long Term InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm	5556000	USD
CY2018	us-gaap	Interest Expense Subordinated Notes And Debentures InterestExpenseSubordinatedNotesAndDebentures	5798000	USD
CY2020	us-gaap	Interest Expense Federal Home Loan Bank And Federal Reserve Bank Advances Long Term InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm	2673000	USD
CY2019	us-gaap	Interest Expense Federal Home Loan Bank And Federal Reserve Bank Advances Long Term InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm	6668000	USD
CY2020	us-gaap	Interest Expense Federal Funds Purchased And Securities Sold Under Agreements To Repurchase InterestExpenseFederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase	1171000	USD
CY2019	us-gaap	Interest Expense Federal Funds Purchased And Securities Sold Under Agreements To Repurchase InterestExpenseFederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase	2386000	USD
CY2018	us-gaap	Interest Expense Federal Funds Purchased And Securities Sold Under Agreements To Repurchase InterestExpenseFederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase	774000	USD
CY2020	us-gaap	Interest Expense InterestExpense	34778000	USD
CY2019	us-gaap	Interest Expense InterestExpense	66417000	USD
CY2018	us-gaap	Interest Expense InterestExpense	45897000	USD
CY2020	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	270001000	USD
CY2019	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	238717000	USD
CY2018	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	191905000	USD
CY2020	efsc	Provision For Loan Losses Not Covered Under Fdic Loss Share ProvisionForLoanLossesNotCoveredUnderFdicLossShare	65398000	USD
CY2019	efsc	Provision For Loan Losses Not Covered Under Fdic Loss Share ProvisionForLoanLossesNotCoveredUnderFdicLossShare	6372000	USD
CY2018	efsc	Provision For Loan Losses Not Covered Under Fdic Loss Share ProvisionForLoanLossesNotCoveredUnderFdicLossShare	6644000	USD
CY2020	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	204603000	USD
CY2019	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	232345000	USD
CY2018	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	185261000	USD
CY2020	us-gaap	Noninterest Income NoninterestIncome	54503000	USD
CY2019	us-gaap	Noninterest Income NoninterestIncome	49176000	USD
CY2018	us-gaap	Noninterest Income NoninterestIncome	38347000	USD
CY2020	us-gaap	Labor And Related Expense LaborAndRelatedExpense	92288000	USD
CY2019	us-gaap	Labor And Related Expense LaborAndRelatedExpense	81295000	USD
CY2018	us-gaap	Labor And Related Expense LaborAndRelatedExpense	66039000	USD
CY2020	us-gaap	Occupancy Net OccupancyNet	13457000	USD
CY2019	us-gaap	Occupancy Net OccupancyNet	12465000	USD
CY2018	us-gaap	Occupancy Net OccupancyNet	9550000	USD
CY2020	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	9050000	USD
CY2019	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	8242000	USD
CY2018	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	6321000	USD
CY2020	us-gaap	Professional Fees ProfessionalFees	3940000	USD
CY2019	us-gaap	Professional Fees ProfessionalFees	3683000	USD
CY2018	us-gaap	Professional Fees ProfessionalFees	3134000	USD
CY2020	efsc	Merger Related Expenses MergerRelatedExpenses	4174000	USD
CY2019	efsc	Merger Related Expenses MergerRelatedExpenses	17969000	USD
CY2018	efsc	Merger Related Expenses MergerRelatedExpenses	1271000	USD
CY2020	us-gaap	Other Noninterest Expense OtherNoninterestExpense	44250000	USD
CY2019	us-gaap	Other Noninterest Expense OtherNoninterestExpense	41831000	USD
CY2018	us-gaap	Other Noninterest Expense OtherNoninterestExpense	32716000	USD
CY2020	us-gaap	Noninterest Expense NoninterestExpense	167159000	USD
CY2019	us-gaap	Noninterest Expense NoninterestExpense	165485000	USD
CY2018	us-gaap	Noninterest Expense NoninterestExpense	119031000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	91947000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	116036000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	104577000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	17563000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	23297000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	15360000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	74384000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	92739000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	89217000	USD
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.76
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.56
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.86
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.76
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.55
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.83
CY2020	us-gaap	Net Income Loss NetIncomeLoss	74384000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	92739000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	89217000	USD
CY2020	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	23944000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	29189000	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-4626000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	317000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-37000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	7000	USD
CY2020	efsc	Other Comprehensive Income Loss Reclassificationofgainlossonheldtomaturitysecuritiesnetoftax OtherComprehensiveIncomeLossReclassificationofgainlossonheldtomaturitysecuritiesnetoftax	-1910000	USD
CY2019	efsc	Other Comprehensive Income Loss Reclassificationofgainlossonheldtomaturitysecuritiesnetoftax OtherComprehensiveIncomeLossReclassificationofgainlossonheldtomaturitysecuritiesnetoftax	-33000	USD
CY2018	efsc	Other Comprehensive Income Loss Reclassificationofgainlossonheldtomaturitysecuritiesnetoftax OtherComprehensiveIncomeLossReclassificationofgainlossonheldtomaturitysecuritiesnetoftax	3000	USD
CY2020	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-5947000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-2262000	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	0	USD
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	3601000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	100000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	0	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	19371000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	27031000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-4630000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	93755000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	119770000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	84587000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	548573000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	89217000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-4630000	USD
CY2018	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	10845000	USD
CY2018	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	19387000	USD
CY2018	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-2576000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition	3452000	USD
CY2018	efsc	Reclassificationfortheadoptionof Asu201609 ReclassificationfortheadoptionofASU201609	0	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	603804000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	92739000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	27031000	USD
CY2019	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	16568000	USD
CY2019	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	15526000	USD
CY2019	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-212000	USD
CY2019	efsc	Sharesissuedinconnectionwithacquisition Sharesissuedinconnectionwithacquisition	171885000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition	4032000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	867185000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	74384000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	74384000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	19371000	USD
CY2020	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	19795000	USD
CY2020	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	15347000	USD
CY2020	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	78000	USD
CY2020	efsc	Sharesissuedinconnectionwithacquisition Sharesissuedinconnectionwithacquisition	167035000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition	4178000	USD
CY2020	efsc	Reclassificationfortheadoptionofnewaccountingstandards Reclassificationfortheadoptionofnewaccountingstandards	-18114000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	1078975000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	74384000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	92739000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	89217000	USD
CY2020	us-gaap	Depreciation Nonproduction DepreciationNonproduction	6152000	USD
CY2019	us-gaap	Depreciation Nonproduction DepreciationNonproduction	5719000	USD
CY2018	us-gaap	Depreciation Nonproduction DepreciationNonproduction	3532000	USD
CY2020	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	65398000	USD
CY2019	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	6372000	USD
CY2018	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	6644000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-12578000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	5800000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	3307000	USD
CY2020	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-6745000	USD
CY2019	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-2973000	USD
CY2018	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-1691000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	5673000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	5543000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2503000	USD
CY2020	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	223094000	USD
CY2019	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	81941000	USD
CY2018	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	36229000	USD
CY2020	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	217934000	USD
CY2019	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	77302000	USD
CY2018	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	39310000	USD
CY2020	us-gaap	Gain Loss On Sale Of Debt Investments GainLossOnSaleOfDebtInvestments	421000	USD
CY2019	us-gaap	Gain Loss On Sale Of Debt Investments GainLossOnSaleOfDebtInvestments	-49000	USD
CY2018	us-gaap	Gain Loss On Sale Of Debt Investments GainLossOnSaleOfDebtInvestments	9000	USD
CY2020	us-gaap	Gain Loss On Sale Of Properties GainLossOnSaleOfProperties	-13000	USD
CY2019	us-gaap	Gain Loss On Sale Of Properties GainLossOnSaleOfProperties	113000	USD
CY2018	us-gaap	Gain Loss On Sale Of Properties GainLossOnSaleOfProperties	13000	USD
CY2020	efsc	Gain On State Tax Credits Net GainOnStateTaxCreditsNet	2016000	USD
CY2019	efsc	Gain On State Tax Credits Net GainOnStateTaxCreditsNet	2549000	USD
CY2018	efsc	Gain On State Tax Credits Net GainOnStateTaxCreditsNet	2820000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	4178000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	4032000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	3452000	USD
CY2020	efsc	Net Accretion Of Loan Discount And Indemnification Asset NetAccretionOfLoanDiscountAndIndemnificationAsset	7767000	USD
CY2019	efsc	Net Accretion Of Loan Discount And Indemnification Asset NetAccretionOfLoanDiscountAndIndemnificationAsset	10494000	USD
CY2018	efsc	Net Accretion Of Loan Discount And Indemnification Asset NetAccretionOfLoanDiscountAndIndemnificationAsset	1700000	USD
CY2020	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-913000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	12975000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	77000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	135514000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	92457000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	108808000	USD
CY2020	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	-62114000	USD
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	23377000	USD
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2020	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	700096000	USD
CY2019	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	284235000	USD
CY2018	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	257872000	USD
CY2020	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	20221000	USD
CY2019	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	357976000	USD
CY2018	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	1451000	USD
CY2020	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	329350000	USD
CY2019	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	146132000	USD
CY2018	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	84189000	USD
CY2020	us-gaap	Proceeds From Sale And Maturity Of Held To Maturity Securities ProceedsFromSaleAndMaturityOfHeldToMaturitySecurities	41377000	USD
CY2019	us-gaap	Proceeds From Sale And Maturity Of Held To Maturity Securities ProceedsFromSaleAndMaturityOfHeldToMaturitySecurities	7447000	USD
CY2018	us-gaap	Proceeds From Sale And Maturity Of Held To Maturity Securities ProceedsFromSaleAndMaturityOfHeldToMaturitySecurities	6397000	USD
CY2020	us-gaap	Proceeds From Maturities Prepayments And Calls Of Other Investments ProceedsFromMaturitiesPrepaymentsAndCallsOfOtherInvestments	43555000	USD
CY2019	us-gaap	Proceeds From Maturities Prepayments And Calls Of Other Investments ProceedsFromMaturitiesPrepaymentsAndCallsOfOtherInvestments	61917000	USD
CY2018	us-gaap	Proceeds From Maturities Prepayments And Calls Of Other Investments ProceedsFromMaturitiesPrepaymentsAndCallsOfOtherInvestments	50274000	USD
CY2020	efsc	Proceeds From Sale Of State Tax Credits Held For Sale ProceedsFromSaleOfStateTaxCreditsHeldForSale	14252000	USD
CY2019	efsc	Proceeds From Sale Of State Tax Credits Held For Sale ProceedsFromSaleOfStateTaxCreditsHeldForSale	14689000	USD
CY2018	efsc	Proceeds From Sale Of State Tax Credits Held For Sale ProceedsFromSaleOfStateTaxCreditsHeldForSale	14718000	USD
CY2020	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	652000	USD
CY2019	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	4798000	USD
CY2018	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	875000	USD
CY2020	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	1993000	USD
CY2019	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	0	USD
CY2018	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	1256000	USD
CY2020	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	452541000	USD
CY2019	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	577211000	USD
CY2018	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	172026000	USD
CY2020	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	50421000	USD
CY2019	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	68963000	USD
CY2018	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	51828000	USD
CY2020	efsc	Payments To Acquire State Tax Credits Held For Sale PaymentsToAcquireStateTaxCreditsHeldForSale	11026000	USD
CY2019	efsc	Payments To Acquire State Tax Credits Held For Sale PaymentsToAcquireStateTaxCreditsHeldForSale	11356000	USD
CY2018	efsc	Payments To Acquire State Tax Credits Held For Sale PaymentsToAcquireStateTaxCreditsHeldForSale	6017000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	2259000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	6337000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	3035000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-702829000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-378520000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-331618000	USD
CY2020	us-gaap	Net Change Noninterest Bearing Deposits Domestic NetChangeNoninterestBearingDepositsDomestic	627756000	USD
CY2019	us-gaap	Net Change Noninterest Bearing Deposits Domestic NetChangeNoninterestBearingDepositsDomestic	57551000	USD
CY2018	us-gaap	Net Change Noninterest Bearing Deposits Domestic NetChangeNoninterestBearingDepositsDomestic	-23189000	USD
CY2020	us-gaap	Net Change Interest Bearing Deposits Domestic NetChangeInterestBearingDepositsDomestic	505604000	USD
CY2019	us-gaap	Net Change Interest Bearing Deposits Domestic NetChangeInterestBearingDepositsDomestic	44300000	USD
CY2018	us-gaap	Net Change Interest Bearing Deposits Domestic NetChangeInterestBearingDepositsDomestic	454760000	USD
CY2020	us-gaap	Proceeds From Issuance Of Subordinated Long Term Debt ProceedsFromIssuanceOfSubordinatedLongTermDebt	61953000	USD
CY2019	us-gaap	Proceeds From Issuance Of Subordinated Long Term Debt ProceedsFromIssuanceOfSubordinatedLongTermDebt	0	USD
CY2018	us-gaap	Proceeds From Issuance Of Subordinated Long Term Debt ProceedsFromIssuanceOfSubordinatedLongTermDebt	0	USD
CY2020	efsc	Proceedsfrom Paymentsfor Short Term Fhl Bank Borrowings Financing Activities ProceedsfromPaymentsforShortTermFHLBankBorrowingsFinancingActivities	-172300000	USD
CY2019	efsc	Proceedsfrom Paymentsfor Short Term Fhl Bank Borrowings Financing Activities ProceedsfromPaymentsforShortTermFHLBankBorrowingsFinancingActivities	95500000	USD
CY2018	efsc	Proceedsfrom Paymentsfor Short Term Fhl Bank Borrowings Financing Activities ProceedsfromPaymentsforShortTermFHLBankBorrowingsFinancingActivities	-102500000	USD
CY2020	efsc	Proceedsfrom Long Term Fhl Bank Borrowings Financing Activities ProceedsfromLongTermFHLBankBorrowingsFinancingActivities	0	USD
CY2019	efsc	Proceedsfrom Long Term Fhl Bank Borrowings Financing Activities ProceedsfromLongTermFHLBankBorrowingsFinancingActivities	50000000	USD
CY2018	efsc	Proceedsfrom Long Term Fhl Bank Borrowings Financing Activities ProceedsfromLongTermFHLBankBorrowingsFinancingActivities	0	USD
CY2020	efsc	Repayment Of Ppplf Advances RepaymentOfPPPLFAdvances	-86096000	USD
CY2019	efsc	Repayment Of Ppplf Advances RepaymentOfPPPLFAdvances	0	USD
CY2018	efsc	Repayment Of Ppplf Advances RepaymentOfPPPLFAdvances	0	USD
CY2020	us-gaap	Proceeds From Notes Payable ProceedsFromNotesPayable	0	USD
CY2019	us-gaap	Proceeds From Notes Payable ProceedsFromNotesPayable	41000000	USD
CY2018	us-gaap	Proceeds From Notes Payable ProceedsFromNotesPayable	2000000	USD
CY2020	us-gaap	Repayments Of Notes Payable RepaymentsOfNotesPayable	4286000	USD
CY2019	us-gaap	Repayments Of Notes Payable RepaymentsOfNotesPayable	8714000	USD
CY2018	us-gaap	Repayments Of Notes Payable RepaymentsOfNotesPayable	0	USD
CY2020	us-gaap	Proceeds From Payments For In Securities Sold Under Agreements To Repurchase ProceedsFromPaymentsForInSecuritiesSoldUnderAgreementsToRepurchase	40195000	USD
CY2019	us-gaap	Proceeds From Payments For In Securities Sold Under Agreements To Repurchase ProceedsFromPaymentsForInSecuritiesSoldUnderAgreementsToRepurchase	9436000	USD
CY2018	us-gaap	Proceeds From Payments For In Securities Sold Under Agreements To Repurchase ProceedsFromPaymentsForInSecuritiesSoldUnderAgreementsToRepurchase	-32224000	USD
CY2020	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	19795000	USD
CY2019	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	16568000	USD
CY2018	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	10845000	USD
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	15347000	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	15526000	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	19387000	USD
CY2020	us-gaap	Payments For Repurchase Of Equity PaymentsForRepurchaseOfEquity	-78000	USD
CY2019	us-gaap	Payments For Repurchase Of Equity PaymentsForRepurchaseOfEquity	212000	USD
CY2018	us-gaap	Payments For Repurchase Of Equity PaymentsForRepurchaseOfEquity	2576000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	937762000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	256767000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	266039000	USD
CY2020	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	370447000	USD
CY2019	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-29296000	USD
CY2018	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	43229000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	167256000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	196552000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	153323000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	537703000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	167256000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	196552000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	35423000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	65667000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	45650000	USD
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	7514000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	13582000	USD
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	10136000	USD
CY2020	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	798000	USD
CY2019	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	8148000	USD
CY2018	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	876000	USD
CY2020	efsc	Sales Of Other Real Estate Financed SalesOfOtherRealEstateFinanced	48000	USD
CY2019	efsc	Sales Of Other Real Estate Financed SalesOfOtherRealEstateFinanced	621000	USD
CY2018	efsc	Sales Of Other Real Estate Financed SalesOfOtherRealEstateFinanced	0	USD
CY2020	us-gaap	Transfer To Investments TransferToInvestments	352665000	USD
CY2019	us-gaap	Transfer To Investments TransferToInvestments	116303000	USD
CY2018	us-gaap	Transfer To Investments TransferToInvestments	0	USD
CY2020	efsc	Transfer From Fixed Assets To Loans TransferFromFixedAssetsToLoans	3336000	USD
CY2019	efsc	Transfer From Fixed Assets To Loans TransferFromFixedAssetsToLoans	0	USD
CY2018	efsc	Transfer From Fixed Assets To Loans TransferFromFixedAssetsToLoans	0	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	1623000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	5208000	USD
CY2018	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	0	USD
CY2020	us-gaap	Stock Issued During Period Shares Acquisitions StockIssuedDuringPeriodSharesAcquisitions	167035000	shares
CY2019	us-gaap	Stock Issued During Period Shares Acquisitions StockIssuedDuringPeriodSharesAcquisitions	171885000	shares
CY2018	us-gaap	Stock Issued During Period Shares Acquisitions StockIssuedDuringPeriodSharesAcquisitions	0	shares
CY2020	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1	segment
CY2020	us-gaap	Use Of Estimates UseOfEstimates	The consolidated financial statements of the Company have been prepared in conformity with GAAP. In preparing the consolidated financial statements, management is required to make estimates and assumptions, which significantly affect the reported amounts in the consolidated financial statements. Such estimates include the valuation of loans, goodwill, intangible assets, and other long-lived assets, along with assumptions used in the calculation of income taxes, among others. These estimates and assumptions are based on management’s best estimates and judgment. Management evaluates its estimates and assumptions on an ongoing basis using experience and other factors, including the current economic environment, which management believes to be reasonable under the circumstances. Management adjusts such estimates and assumptions when facts and circumstances dictate. As future events and their effects cannot be determined with precision, actual results could differ significantly from these estimates. Changes in those estimates resulting from continuing changes in the economic environment will be reflected in the financial statements in future periods.
CY2019Q4	efsc	Cash Reserve Deposit Required And Made In Accordance With Federal Reserve Bank Requirements CashReserveDepositRequiredAndMadeInAccordanceWithFederalReserveBankRequirements	9700000	USD
CY2019Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	5314337000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	43288000	USD
CY2019Q4	efsc	Financing Receivable Allowance For Credit Loss Held To Maturity Securities FinancingReceivableAllowanceForCreditLossHeldToMaturitySecurities	0	USD
CY2019Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	14851000	USD
CY2019Q4	efsc	Reserve For Unfunded Commitments ReserveForUnfundedCommitments	430000	USD
CY2019Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	380737000	USD
CY2020Q4	efsc	Sba Loans Receivable SbaLoansReceivable	296000000	USD
CY2020Q4	us-gaap	Servicing Asset ServicingAsset	5700000	USD
CY2020Q4	us-gaap	Interest Receivable InterestReceivable	31100000	USD
CY2020	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	Certain amounts reported in prior periods have been reclassified to conform to the current presentation. The reclassifications had no effect on net income or shareholders’ equity.
CY2020Q4	us-gaap	Share Price SharePrice	33.56
CY2020Q4	us-gaap	Business Acquisition Cost Of Acquired Entity Transaction Costs BusinessAcquisitionCostOfAcquiredEntityTransactionCosts	4200000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	74384000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	92739000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	89217000	USD
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	26954000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	26045000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	23100000	shares
CY2020	efsc	Incremental Common Shares Attributable To Additional Dilutive Common Stock Equivalents IncrementalCommonSharesAttributableToAdditionalDilutiveCommonStockEquivalents	35000	shares
CY2019	efsc	Incremental Common Shares Attributable To Additional Dilutive Common Stock Equivalents IncrementalCommonSharesAttributableToAdditionalDilutiveCommonStockEquivalents	114000	shares
CY2018	efsc	Incremental Common Shares Attributable To Additional Dilutive Common Stock Equivalents IncrementalCommonSharesAttributableToAdditionalDilutiveCommonStockEquivalents	189000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	26989000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	26159000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	23289000	shares
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.76
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.56
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.86
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.76
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.55
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.83
CY2020	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	156000	shares
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	21000	shares
CY2020Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	882682000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	30104000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	357000	USD
CY2020Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	912429000	USD
CY2020Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	488059000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	13960000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	496000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	501523000	USD
CY2020Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	449000	USD
CY2020Q4	efsc	Debt Securities Held To Maturity Net Of Allowance For Credit Losses DebtSecuritiesHeldToMaturityNetOfAllowanceForCreditLosses	487610000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	1115323000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	21548000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	1554000	USD
CY2019Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	1135317000	USD
CY2019Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	181166000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	973000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	200000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	181939000	USD
CY2020Q4	efsc	Maximum Percentage Of Shareholders Equity Security Holdings Held Of One Issuer MaximumPercentageOfShareholdersEquitySecurityHoldingsHeldOfOneIssuer	0.10
CY2020Q4	us-gaap	Security Owned And Pledged As Collateral Fair Value SecurityOwnedAndPledgedAsCollateralFairValue	525800000	USD
CY2019Q4	us-gaap	Security Owned And Pledged As Collateral Fair Value SecurityOwnedAndPledgedAsCollateralFairValue	484800000	USD
CY2020	efsc	Mortgage Backed Securities Weighted Average Life MortgageBackedSecuritiesWeightedAverageLife	P3Y
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	12048000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	12240000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount	0	USD
CY2020Q4	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Fair Value HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue	0	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	21977000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	22629000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount	11589000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	12040000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	19711000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	20105000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount	132613000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	141252000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	322243000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	330883000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount	231115000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue	233690000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost	506703000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue	526572000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Debt Maturities Without Single Maturity Date Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesWithoutSingleMaturityDateNetCarryingAmount	112742000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Debt Maturities Without Single Maturity Date Fair Value HeldToMaturitySecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue	114541000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	882682000	USD
CY2020Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	912429000	USD
CY2020Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	488059000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	501523000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	30	number_of_securities
CY2019Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	73	number_of_securities
CY2020Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	75062000	USD
CY2020Q4	efsc	Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Aggregate Losses SecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses	-357000	USD
CY2020Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	0	USD
CY2020Q4	efsc	Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Aggregate Losses SecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses	0	USD
CY2020Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	75062000	USD
CY2020Q4	efsc	Securities Available For Sale Continuous Unrealized Loss Position Total Aggregate Losses SecuritiesAvailableForSaleContinuousUnrealizedLossPositionTotalAggregateLosses	-357000	USD
CY2019Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	255984000	USD
CY2019Q4	efsc	Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Aggregate Losses SecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses	1319000	USD
CY2019Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	41491000	USD
CY2019Q4	efsc	Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Aggregate Losses SecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses	435000	USD
CY2019Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	297475000	USD
CY2019Q4	efsc	Securities Available For Sale Continuous Unrealized Loss Position Total Aggregate Losses SecuritiesAvailableForSaleContinuousUnrealizedLossPositionTotalAggregateLosses	1754000	USD
CY2020Q4	efsc	Accrued Interest Receivable Held To Maturity Securities AccruedInterestReceivableHeldToMaturitySecurities	3600000	USD
CY2020Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	400000	USD
CY2020	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	421000	USD
CY2019	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	400000	USD
CY2018	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	9000	USD
CY2020	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	0	USD
CY2019	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	449000	USD
CY2018	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	0	USD
CY2020	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	20221000	USD
CY2019	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	357976000	USD
CY2018	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	1451000	USD
CY2020Q4	us-gaap	Other Investments And Securities At Cost OtherInvestmentsAndSecuritiesAtCost	48800000	USD
CY2019Q4	us-gaap	Other Investments And Securities At Cost OtherInvestmentsAndSecuritiesAtCost	38000000.0	USD
CY2020Q4	efsc	Financing Receivable Paycheck Protection Program FinancingReceivablePaycheckProtectionProgram	709900000	USD
CY2020Q4	efsc	Financing Receivable Paycheck Protection Program Net Of Deferred Fees FinancingReceivablePaycheckProtectionProgramNetOfDeferredFees	698600000	USD
CY2020Q4	efsc	Financing Recievable Paycheck Protection Program Unearned Fees FinancingRecievablePaycheckProtectionProgramUnearnedFees	11300000	USD
CY2020Q4	efsc	Net Premium Acquired Loans NetPremiumAcquiredLoans	16100000	USD
CY2020Q4	efsc	Net Discount Acquired Loans NetDiscountAcquiredLoans	36000000.0	USD
CY2020Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Maximum Amount Available FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresMaximumAmountAvailable	2500000000	USD
CY2019Q4	us-gaap	Notes Receivable Related Parties NotesReceivableRelatedParties	5475000	USD
CY2018Q4	us-gaap	Notes Receivable Related Parties NotesReceivableRelatedParties	17169000	USD
CY2020	us-gaap	Origination Of Notes Receivable From Related Parties OriginationOfNotesReceivableFromRelatedParties	2013000	USD
CY2019	us-gaap	Origination Of Notes Receivable From Related Parties OriginationOfNotesReceivableFromRelatedParties	1376000	USD
CY2020	us-gaap	Repayment Of Notes Receivable From Related Parties RepaymentOfNotesReceivableFromRelatedParties	1771000	USD
CY2019	us-gaap	Repayment Of Notes Receivable From Related Parties RepaymentOfNotesReceivableFromRelatedParties	13070000	USD
CY2020Q4	us-gaap	Notes Receivable Related Parties NotesReceivableRelatedParties	5717000	USD
CY2019Q4	us-gaap	Notes Receivable Related Parties NotesReceivableRelatedParties	5475000	USD
CY2020Q4	efsc	Allowance For Credit Losses Qualitative Adjustment AllowanceForCreditLossesQualitativeAdjustment	24000000.0	USD
CY2020Q4	efsc	Financing Receivable Amount Eligible For Deferred Payment FinancingReceivableAmountEligibleForDeferredPayment	687800000	USD
CY2020Q4	efsc	Financing Receivable Amount Eligible For Deferral Of Both Principal And Interest FinancingReceivableAmountEligibleForDeferralOfBothPrincipalAndInterest	340000000.0	USD
CY2020Q4	efsc	Financing Receivable Amount Eligible For Deferral Of Principal Only FinancingReceivableAmountEligibleForDeferralOfPrincipalOnly	347800000	USD
CY2020Q4	efsc	Financing Receivable Amount Still In Deferral Status FinancingReceivableAmountStillInDeferralStatus	63000000.0	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	4100000	USD
CY2020Q4	us-gaap	Notes Receivable Net NotesReceivableNet	8056000	USD
CY2020Q4	efsc	Par Value Acquired Loans ParValueAcquiredLoans	137693000	USD
CY2020Q4	efsc	Allowance Pcd Loans AllowancePcdLoans	-3524000	USD
CY2020Q4	efsc	Noncredit Premium NoncreditPremium	928000	USD
CY2020Q4	efsc	Purchase Price Acquired Loans PurchasePriceAcquiredLoans	135097000	USD
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	3207000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	3301000	USD
CY2020	us-gaap	Short Term Lease Cost ShortTermLeaseCost	201000	USD
CY2019	us-gaap	Short Term Lease Cost ShortTermLeaseCost	288000	USD
CY2020	us-gaap	Lease Cost LeaseCost	3408000	USD
CY2019	us-gaap	Lease Cost LeaseCost	3589000	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	3300000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	1600000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	5200000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	13636000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	14843000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	14152000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	15461000	USD
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P5Y
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P6Y
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.025	Rate
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.027	Rate
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	4043000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	2988000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	2622000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	2190000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	978000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	2266000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	15087000	USD
CY2020	efsc	Present Value Adjustment PresentValueAdjustment	935000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	14152000	USD
CY2020	us-gaap	Operating Lease Lease Income Lease Payments OperatingLeaseLeaseIncomeLeasePayments	1800000	USD
CY2019	us-gaap	Operating Lease Lease Income Lease Payments OperatingLeaseLeaseIncomeLeasePayments	900000	USD
CY2020Q4	efsc	Repayment Of Fhlb Advances RepaymentOfFhlbAdvances	200000000	USD
CY2020Q4	efsc	Interest Rate Swaps Terminated InterestRateSwapsTerminated	200000000.0	USD
CY2020Q4	efsc	Swap Termination Fee SwapTerminationFee	3200000	USD
CY2020Q4	us-gaap	Securities Sold Under Agreements To Repurchase Gross SecuritiesSoldUnderAgreementsToRepurchaseGross	271081000	USD
CY2020Q4	us-gaap	Securities Sold Under Agreements To Repurchase Asset SecuritiesSoldUnderAgreementsToRepurchaseAsset	0	USD
CY2020Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	271081000	USD
CY2020Q4	us-gaap	Securities Sold Under Agreements To Repurchase Collateral Right To Reclaim Securities SecuritiesSoldUnderAgreementsToRepurchaseCollateralRightToReclaimSecurities	0	USD
CY2020Q4	us-gaap	Securities Sold Under Agreements To Repurchase Collateral Right To Reclaim Cash SecuritiesSoldUnderAgreementsToRepurchaseCollateralRightToReclaimCash	271081000	USD
CY2020Q4	us-gaap	Securities Sold Under Agreements To Repurchase Amount Offset Against Collateral SecuritiesSoldUnderAgreementsToRepurchaseAmountOffsetAgainstCollateral	0	USD
CY2019Q4	us-gaap	Securities Sold Under Agreements To Repurchase Gross SecuritiesSoldUnderAgreementsToRepurchaseGross	230886000	USD
CY2019Q4	us-gaap	Securities Sold Under Agreements To Repurchase Asset SecuritiesSoldUnderAgreementsToRepurchaseAsset	0	USD
CY2019Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	230886000	USD
CY2019Q4	us-gaap	Securities Sold Under Agreements To Repurchase Collateral Right To Reclaim Securities SecuritiesSoldUnderAgreementsToRepurchaseCollateralRightToReclaimSecurities	0	USD
CY2020Q4	us-gaap	Capitalized Computer Software Gross CapitalizedComputerSoftwareGross	1373000	USD
CY2019Q4	us-gaap	Securities Sold Under Agreements To Repurchase Collateral Right To Reclaim Cash SecuritiesSoldUnderAgreementsToRepurchaseCollateralRightToReclaimCash	230886000	USD
CY2019Q4	us-gaap	Securities Sold Under Agreements To Repurchase Amount Offset Against Collateral SecuritiesSoldUnderAgreementsToRepurchaseAmountOffsetAgainstCollateral	0	USD
CY2020Q4	us-gaap	Derivative Net Liability Position Aggregate Fair Value DerivativeNetLiabilityPositionAggregateFairValue	35800000	USD
CY2020Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	36500000	USD
CY2020Q4	us-gaap	Land Land	13389000	USD
CY2019Q4	us-gaap	Land Land	14079000	USD
CY2020Q4	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	53007000	USD
CY2019Q4	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	54838000	USD
CY2020Q4	us-gaap	Furniture And Fixtures Gross FurnitureAndFixturesGross	16560000	USD
CY2019Q4	us-gaap	Furniture And Fixtures Gross FurnitureAndFixturesGross	15178000	USD
CY2019Q4	us-gaap	Capitalized Computer Software Gross CapitalizedComputerSoftwareGross	1373000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	84329000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	85468000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	31160000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	25455000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	53169000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	60013000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	6200000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	5700000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	3500000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	210344000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	117345000	USD
CY2020Q4	efsc	Goodwill Acquired Through Acquisition GoodwillAcquiredThroughAcquisition	50223000	USD
CY2019Q4	efsc	Goodwill Acquired Through Acquisition GoodwillAcquiredThroughAcquisition	92999000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	260567000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	210344000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	5700000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	5500000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2500000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	5295000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	4517000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	3840000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	3162000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	2485000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	3785000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	23084000	USD
CY2020Q4	efsc	Interest Bearing Domestic Deposit Brokered Nexttwelvemonths InterestBearingDomesticDepositBrokeredNexttwelvemonths	0	USD
CY2020Q4	efsc	Interest Bearing Domestic Deposit Other Time Deposit Next Twelve Months InterestBearingDomesticDepositOtherTimeDepositNextTwelveMonths	384529000	USD
CY2020Q4	us-gaap	Time Deposit Maturities Year One TimeDepositMaturitiesYearOne	384529000	USD
CY2020Q4	efsc	Interest Bearing Domestic Deposit Brokered Year Two InterestBearingDomesticDepositBrokeredYearTwo	0	USD
CY2020Q4	efsc	Interest Bearing Domestic Deposit Other Time Deposit Year Two InterestBearingDomesticDepositOtherTimeDepositYearTwo	75484000	USD
CY2020Q4	us-gaap	Time Deposit Maturities Year Two TimeDepositMaturitiesYearTwo	75484000	USD
CY2020Q4	efsc	Interest Bearing Domestic Deposit Brokered Year Three InterestBearingDomesticDepositBrokeredYearThree	25069000	USD
CY2020Q4	efsc	Interest Bearing Domestic Deposit Other Time Deposit Year Three InterestBearingDomesticDepositOtherTimeDepositYearThree	12663000	USD
CY2020Q4	us-gaap	Time Deposit Maturities Year Three TimeDepositMaturitiesYearThree	37732000	USD
CY2020Q4	efsc	Interest Bearing Domestic Deposit Brokered Year Four InterestBearingDomesticDepositBrokeredYearFour	25140000	USD
CY2020Q4	efsc	Interest Bearing Domestic Deposit Other Time Deposit Year Four InterestBearingDomesticDepositOtherTimeDepositYearFour	17587000	USD
CY2020Q4	us-gaap	Time Deposit Maturities Year Four TimeDepositMaturitiesYearFour	42727000	USD
CY2020Q4	efsc	Interest Bearing Domestic Deposit Brokered Year Five InterestBearingDomesticDepositBrokeredYearFive	0	USD
CY2020Q4	efsc	Interest Bearing Domestic Deposit Other Time Deposit Year Five InterestBearingDomesticDepositOtherTimeDepositYearFive	4043000	USD
CY2020Q4	us-gaap	Time Deposit Maturities Year Five TimeDepositMaturitiesYearFive	4043000	USD
CY2020Q4	efsc	Contractual Maturities Time Deposits100000 Or More After Year Five ContractualMaturitiesTimeDeposits100000OrMoreAfterYearFive	0	USD
CY2020Q4	efsc	Contractual Maturities Time Deposits Less Than100000 After Year Five ContractualMaturitiesTimeDepositsLessThan100000AfterYearFive	5580000	USD
CY2020Q4	us-gaap	Time Deposit Maturities After Year Five TimeDepositMaturitiesAfterYearFive	5580000	USD
CY2020Q4	us-gaap	Interest Bearing Domestic Deposit Brokered InterestBearingDomesticDepositBrokered	50209000	USD
CY2020Q4	us-gaap	Interest Bearing Domestic Deposit Other Time Deposit InterestBearingDomesticDepositOtherTimeDeposit	499886000	USD
CY2020Q4	us-gaap	Time Deposits TimeDeposits	550095000	USD
CY2020Q4	efsc	Time Deposits250000or More TimeDeposits250000orMore	169500000	USD
CY2019Q4	us-gaap	Related Party Deposit Liabilities RelatedPartyDepositLiabilities	9763000	USD
CY2020	efsc	Related Party Deposits RelatedPartyDeposits	2441000	USD
CY2020	efsc	Related Party Withdrawals RelatedPartyWithdrawals	-4961000	USD
CY2020Q4	us-gaap	Related Party Deposit Liabilities RelatedPartyDepositLiabilities	7243000	USD
CY2020Q4	efsc	Cdars Deposits CDARSDeposits	7300000	USD
CY2020Q4	efsc	Ics Deposits ICSDeposits	71700000	USD
CY2020Q4	us-gaap	Deposit Liabilities Reclassified As Loans Receivable1 DepositLiabilitiesReclassifiedAsLoansReceivable1	1000000.0	USD
CY2019Q4	us-gaap	Deposit Liabilities Reclassified As Loans Receivable1 DepositLiabilitiesReclassifiedAsLoansReceivable1	2100000	USD
CY2020Q4	us-gaap	Subordinated Debt SubordinatedDebt	203637000	USD
CY2019Q4	us-gaap	Subordinated Debt SubordinatedDebt	141258000	USD
CY2020	efsc	Numberof Unconsolidated Statutory Business Trusts NumberofUnconsolidatedStatutoryBusinessTrusts	13
CY2020Q4	efsc	Investmentstrustpreferredsecurities Investmentstrustpreferredsecurities	2900000	USD
CY2020Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due Within One Year Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate	0	USD
CY2020Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary Average Interest Rate Of Amounts Due Within One Year Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateOfAmountsDueWithinOneYearOfBalanceSheetDate	0
CY2019Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due Within One Year Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate	170000000	USD
CY2019Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary Average Interest Rate Of Amounts Due Within One Year Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateOfAmountsDueWithinOneYearOfBalanceSheetDate	0.0173
CY2020Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary By Interest Rate Type One To Five Years FederalHomeLoanBankAdvancesMaturitiesSummaryByInterestRateTypeOneToFiveYears	50000000	USD
CY2020Q4	efsc	Federal Home Loan Bank Advances Maturities Summary Average Interest Rateof Amounts Duein Oneto Five Yearsof Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateofAmountsDueinOnetoFiveYearsofBalanceSheetDate	0.0156
CY2019Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary By Interest Rate Type One To Five Years FederalHomeLoanBankAdvancesMaturitiesSummaryByInterestRateTypeOneToFiveYears	52406000	USD
CY2019Q4	efsc	Federal Home Loan Bank Advances Maturities Summary Average Interest Rateof Amounts Duein Oneto Five Yearsof Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateofAmountsDueinOnetoFiveYearsofBalanceSheetDate	0.0162
CY2020Q4	us-gaap	Federal Home Loan Bank Advances FederalHomeLoanBankAdvances	50000000	USD
CY2020Q4	efsc	Federal Home Loan Bank Advances Maturities Summary Average Interst Rateof Amounts FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterstRateofAmounts	0.0156
CY2019Q4	us-gaap	Federal Home Loan Bank Advances FederalHomeLoanBankAdvances	222406000	USD
CY2019Q4	efsc	Federal Home Loan Bank Advances Maturities Summary Average Interst Rateof Amounts FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterstRateofAmounts	0.0170
CY2019Q4	us-gaap	Convertible Debt ConvertibleDebt	50000000	USD
CY2019	efsc	Convertibleadvancesweightedaverageinterestrate Convertibleadvancesweightedaverageinterestrate	0.0156	Rate
CY2020Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Collateral Pledged1 FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1	6000000.0	USD
CY2020Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	271081000	USD
CY2019Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	230886000	USD
CY2020Q4	efsc	Paycheck Protection Program Liquidity Facility Funds PaycheckProtectionProgramLiquidityFacilityFunds	86100000	USD
CY2016Q1	us-gaap	Lines Of Credit Current LinesOfCreditCurrent	25000000	USD
CY2019Q4	us-gaap	Line Of Credit LineOfCredit	0	USD
CY2020Q4	us-gaap	Debt Instrument Face Amount DebtInstrumentFaceAmount	40000000.0	USD
CY2020Q4	us-gaap	Loans Payable LoansPayable	30000000	USD
CY2019Q4	us-gaap	Loans Payable LoansPayable	34286000	USD
CY2020	us-gaap	Loss Contingency Disclosures LossContingencyDisclosures	LITIGATION AND OTHER CONTINGENCIES The Company and its subsidiaries are, from time to time, parties to various legal proceedings arising out of their businesses. Management believes there are no such legal proceedings pending or threatened against the Company or its subsidiaries in the ordinary course of business, directly, indirectly, or in the aggregate that, if determined adversely, would have a material adverse effect on the business, consolidated financial condition, results of operations or cash flows of the Company or any of its subsidiaries.
CY2020Q4	us-gaap	Common Stock Capital Shares Reserved For Future Issuance CommonStockCapitalSharesReservedForFutureIssuance	1344801	shares
CY2019Q4	us-gaap	Common Stock Capital Shares Reserved For Future Issuance CommonStockCapitalSharesReservedForFutureIssuance	1530530	shares
CY2015Q2	us-gaap	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	2000000	shares
CY2020Q4	us-gaap	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	95907	shares
CY2020Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2020Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2020Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-4630000	USD
CY2018	efsc	Other Comprehensive Income Loss Netof Tax Adjustment For Change In Accounting Policy Portion Attributableto Parent OtherComprehensiveIncomeLossNetofTaxAdjustmentForChangeInAccountingPolicyPortionAttributabletoParent	-834000	USD
CY2020	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	-7898000	USD
CY2020	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	1951000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	27031000	USD
CY2019	us-gaap	Debt Securities Held To Maturity Transfer Derivative Hedge Gain Loss DebtSecuritiesHeldToMaturityTransferDerivativeHedgeGainLoss	0	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	19371000	USD
CY2020	us-gaap	Debt Securities Held To Maturity Transfer Derivative Hedge Gain Loss DebtSecuritiesHeldToMaturityTransferDerivativeHedgeGainLoss	0	USD
CY2020	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	31798000	USD
CY2020	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-7854000	USD
CY2020	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	23944000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	38764000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-9575000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	29189000	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-6143000	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	1517000	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-4626000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	421000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	-104000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	317000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-49000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	12000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-37000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	9000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	-2000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	7000	USD
CY2020	efsc	Other Comprehensive Income Loss Reclassification Of Gain Loss On Held To Maturity Securities Before Of Tax OtherComprehensiveIncomeLossReclassificationOfGainLossOnHeldToMaturitySecuritiesBeforeOfTax	-2537000	USD
CY2020	efsc	Other Comprehensive Income Loss Reclassificationofgainlossonheldtomaturitysecuritiestax OtherComprehensiveIncomeLossReclassificationofgainlossonheldtomaturitysecuritiestax	627000	USD
CY2020	efsc	Other Comprehensive Income Loss Reclassificationofgainlossonheldtomaturitysecuritiesnetoftax OtherComprehensiveIncomeLossReclassificationofgainlossonheldtomaturitysecuritiesnetoftax	-1910000	USD
CY2019	efsc	Other Comprehensive Income Loss Reclassification Of Gain Loss On Held To Maturity Securities Before Of Tax OtherComprehensiveIncomeLossReclassificationOfGainLossOnHeldToMaturitySecuritiesBeforeOfTax	-44000	USD
CY2019	efsc	Other Comprehensive Income Loss Reclassificationofgainlossonheldtomaturitysecuritiestax OtherComprehensiveIncomeLossReclassificationofgainlossonheldtomaturitysecuritiestax	11000	USD
CY2019	efsc	Other Comprehensive Income Loss Reclassificationofgainlossonheldtomaturitysecuritiesnetoftax OtherComprehensiveIncomeLossReclassificationofgainlossonheldtomaturitysecuritiesnetoftax	-33000	USD
CY2018	efsc	Other Comprehensive Income Loss Reclassification Of Gain Loss On Held To Maturity Securities Before Of Tax OtherComprehensiveIncomeLossReclassificationOfGainLossOnHeldToMaturitySecuritiesBeforeOfTax	4000	USD
CY2018	efsc	Other Comprehensive Income Loss Reclassificationofgainlossonheldtomaturitysecuritiestax OtherComprehensiveIncomeLossReclassificationofgainlossonheldtomaturitysecuritiestax	-1000	USD
CY2018	efsc	Other Comprehensive Income Loss Reclassificationofgainlossonheldtomaturitysecuritiesnetoftax OtherComprehensiveIncomeLossReclassificationofgainlossonheldtomaturitysecuritiesnetoftax	3000	USD
CY2020	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-5947000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	-3004000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	742000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-2262000	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	0	USD
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	-4782000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	1181000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	3601000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	-133000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	33000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	100000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	0	USD
CY2020	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	25724000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-6353000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	19371000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	35898000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-8867000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	27031000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-6148000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	1518000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-4630000	USD
CY2020	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	200000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	500000	USD
CY2018	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	1600000	USD
CY2020Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	5000000.0	USD
CY2020	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P2Y
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	4178000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	4032000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	3452000	USD
CY2020Q1	us-gaap	Stock Issued During Period Shares Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures	62649	shares
CY2019Q1	us-gaap	Stock Issued During Period Shares Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures	99308	shares
CY2019	efsc	Target Shares Issuableas Long Term Incentive Awards TargetSharesIssuableasLongTermIncentiveAwards	20860000	USD
CY2020	efsc	Target Shares Issuableas Long Term Incentive Awards TargetSharesIssuableasLongTermIncentiveAwards	26002000	USD
CY2019	efsc	Maximum Shares Issuableas Long Term Incentive Awards MaximumSharesIssuableasLongTermIncentiveAwards	41720000	USD
CY2020	efsc	Maximum Shares Issuableas Long Term Incentive Awards MaximumSharesIssuableasLongTermIncentiveAwards	52004000	USD
CY2019	efsc	Unrecognized Compensation Cost Long Term Incentives UnrecognizedCompensationCostLongTermIncentives	366000000	USD
CY2020	efsc	Unrecognized Compensation Cost Long Term Incentives UnrecognizedCompensationCostLongTermIncentives	704000000	USD
CY2019	efsc	Share Based Compensation Arrangement By Share Based Payment Award Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardGrantsInPeriodWeightedAverageGrantDateFairValue	47460
CY2020	efsc	Share Based Compensation Arrangement By Share Based Payment Award Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardGrantsInPeriodWeightedAverageGrantDateFairValue	38090.00
CY2020	efsc	Defined Contribution Plan Employee Minimum Age To Participate DefinedContributionPlanEmployeeMinimumAgeToParticipate	P21Y
CY2020	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	3800000	USD
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	3200000	USD
CY2018	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	2800000	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	25132000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	15470000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	9621000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	5009000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	2027000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	2432000	USD
CY2020	us-gaap	Current Federal State And Local Tax Expense Benefit CurrentFederalStateAndLocalTaxExpenseBenefit	30141000	USD
CY2019	us-gaap	Current Federal State And Local Tax Expense Benefit CurrentFederalStateAndLocalTaxExpenseBenefit	17497000	USD
CY2018	us-gaap	Current Federal State And Local Tax Expense Benefit CurrentFederalStateAndLocalTaxExpenseBenefit	12053000	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-10651000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	4262000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	2812000	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-1927000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	1538000	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	495000	USD
CY2020	us-gaap	Deferred Federal State And Local Tax Expense Benefit DeferredFederalStateAndLocalTaxExpenseBenefit	-12578000	USD
CY2019	us-gaap	Deferred Federal State And Local Tax Expense Benefit DeferredFederalStateAndLocalTaxExpenseBenefit	5800000	USD
CY2018	us-gaap	Deferred Federal State And Local Tax Expense Benefit DeferredFederalStateAndLocalTaxExpenseBenefit	3307000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	17563000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	23297000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	15360000	USD
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	19309000	USD
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	24368000	USD
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	21961000	USD
CY2020	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	2010000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	962000	USD
CY2018	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	506000	USD
CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	3254000	USD
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	2816000	USD
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	2423000	USD
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense Life Insurance IncomeTaxReconciliationNondeductibleExpenseLifeInsurance	778000	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Life Insurance IncomeTaxReconciliationNondeductibleExpenseLifeInsurance	628000	USD
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Life Insurance IncomeTaxReconciliationNondeductibleExpenseLifeInsurance	452000	USD
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	637000	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	749000	USD
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	294000	USD
CY2020	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	444000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	278000	USD
CY2018	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	50000	USD
CY2020	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	175000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	526000	USD
CY2018	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	1631000	USD
CY2020	us-gaap	Income Tax Reconciliation Tax Credits Other IncomeTaxReconciliationTaxCreditsOther	1327000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Credits Other IncomeTaxReconciliationTaxCreditsOther	913000	USD
CY2018	us-gaap	Income Tax Reconciliation Tax Credits Other IncomeTaxReconciliationTaxCreditsOther	4627000	USD
CY2020	efsc	Nontaxablesubsidiarydividend Nontaxablesubsidiarydividend	0	USD
CY2019	efsc	Nontaxablesubsidiarydividend Nontaxablesubsidiarydividend	0	USD
CY2018	efsc	Nontaxablesubsidiarydividend Nontaxablesubsidiarydividend	-2728000	USD
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense Charitable Contributions IncomeTaxReconciliationNondeductibleExpenseCharitableContributions	0	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Charitable Contributions IncomeTaxReconciliationNondeductibleExpenseCharitableContributions	420000	USD
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Charitable Contributions IncomeTaxReconciliationNondeductibleExpenseCharitableContributions	0	USD
CY2020	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-903000	USD
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-909000	USD
CY2018	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	676000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	17563000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	23297000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	15360000	USD
CY2020	efsc	Incometaxbenefitlowincomehousingtaxcredits Incometaxbenefitlowincomehousingtaxcredits	400000	USD
CY2019	efsc	Incometaxbenefitlowincomehousingtaxcredits Incometaxbenefitlowincomehousingtaxcredits	300000	USD
CY2018	efsc	Incometaxbenefitlowincomehousingtaxcredits Incometaxbenefitlowincomehousingtaxcredits	100000	USD
CY2020Q4	efsc	Investmentslowincomehousingtaxcredits Investmentslowincomehousingtaxcredits	4200000	USD
CY2019Q4	efsc	Investmentslowincomehousingtaxcredits Investmentslowincomehousingtaxcredits	4000000.0	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Impairment Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsImpairmentLosses	0	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	34031000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	10692000	USD
CY2020Q4	efsc	Deferred Tax Assets Asset Purchase Tax Basis Difference Net DeferredTaxAssetsAssetPurchaseTaxBasisDifferenceNet	0	USD
CY2019Q4	efsc	Deferred Tax Assets Asset Purchase Tax Basis Difference Net DeferredTaxAssetsAssetPurchaseTaxBasisDifferenceNet	9722000	USD
CY2020Q4	efsc	Deferred Tax Assets Loans Held For Sale DeferredTaxAssetsLoansHeldForSale	8058000	USD
CY2019Q4	efsc	Deferred Tax Assets Loans Held For Sale DeferredTaxAssetsLoansHeldForSale	0	USD
CY2020Q4	efsc	Deferred Tax Assets Basis Difference On Other Real Estate DeferredTaxAssetsBasisDifferenceOnOtherRealEstate	896000	USD
CY2019Q4	efsc	Deferred Tax Assets Basis Difference On Other Real Estate DeferredTaxAssetsBasisDifferenceOnOtherRealEstate	657000	USD
CY2020Q4	efsc	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Deferred Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsDeferredCompensation	2585000	USD
CY2019Q4	efsc	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Deferred Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsDeferredCompensation	2462000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	5391000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	1607000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	6460000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	7066000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	3086000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	791000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	60507000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	32997000	USD
CY2020Q4	efsc	Deferred Tax Liabilities Asset Purchase Tax Basis Difference Net DeferredTaxLiabilitiesAssetPurchaseTaxBasisDifferenceNet	3413000	USD
CY2019Q4	efsc	Deferred Tax Liabilities Asset Purchase Tax Basis Difference Net DeferredTaxLiabilitiesAssetPurchaseTaxBasisDifferenceNet	0	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Investments DeferredTaxLiabilitiesInvestments	12189000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Investments DeferredTaxLiabilitiesInvestments	5847000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	7800000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	4369000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	2407000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	27771000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	15686000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	7432000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	32736000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	17311000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	2932000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	2932000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	29804000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	14379000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	2900000	USD
CY2020	efsc	Number Of States Company Files Income Tax Returns With NumberOfStatesCompanyFilesIncomeTaxReturnsWith	29	state
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	3200000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	3100000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	1100000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	900000	USD
CY2020Q4	us-gaap	Significant Change In Unrecognized Tax Benefits Is Reasonably Possible Amount Of Unrecorded Benefit SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit	300000	USD
CY2020	efsc	Durationofunrecognizedtaxbenefits Durationofunrecognizedtaxbenefits	P12M
CY2020Q4	us-gaap	Income Tax Examination Penalties And Interest Accrued IncomeTaxExaminationPenaltiesAndInterestAccrued	900000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1497000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1301000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1244000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	395000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	401000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	367000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	1556000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	62000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	50000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	291000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	267000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	360000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	3157000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1497000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1301000	USD
CY2020	efsc	Dividendsfrom Other Subsidiaries DividendsfromOtherSubsidiaries	1400000	USD
CY2019	efsc	Dividendsfrom Other Subsidiaries DividendsfromOtherSubsidiaries	1500000	USD
CY2018	efsc	Dividendsfrom Other Subsidiaries DividendsfromOtherSubsidiaries	1200000	USD
CY2020Q4	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	84113000	USD
CY2020Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	70787000	USD
CY2020Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	73191000	USD
CY2020Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	76688000	USD
CY2020Q4	us-gaap	Interest Expense InterestExpense	6667000	USD
CY2020Q3	us-gaap	Interest Expense InterestExpense	7433000	USD
CY2020Q2	us-gaap	Interest Expense InterestExpense	7358000	USD
CY2020Q1	us-gaap	Interest Expense InterestExpense	13320000	USD
CY2020Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	77446000	USD
CY2020Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	63354000	USD
CY2020Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	65833000	USD
CY2020Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	63368000	USD
CY2020Q4	efsc	Provision For Loan Losses Not Covered Under Fdic Loss Share ProvisionForLoanLossesNotCoveredUnderFdicLossShare	9463000	USD
CY2020Q3	efsc	Provision For Loan Losses Not Covered Under Fdic Loss Share ProvisionForLoanLossesNotCoveredUnderFdicLossShare	14080000	USD
CY2020Q2	efsc	Provision For Loan Losses Not Covered Under Fdic Loss Share ProvisionForLoanLossesNotCoveredUnderFdicLossShare	19591000	USD
CY2020Q1	efsc	Provision For Loan Losses Not Covered Under Fdic Loss Share ProvisionForLoanLossesNotCoveredUnderFdicLossShare	22264000	USD
CY2020Q4	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	67983000	USD
CY2020Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	49274000	USD
CY2020Q2	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	46242000	USD
CY2020Q1	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	41104000	USD
CY2020Q4	us-gaap	Noninterest Income NoninterestIncome	18506000	USD
CY2020Q3	us-gaap	Noninterest Income NoninterestIncome	12629000	USD
CY2020Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3656000	USD
CY2020Q3	us-gaap	Noninterest Expense NoninterestExpense	39524000	USD
CY2020Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	18290000	USD
CY2020Q2	us-gaap	Noninterest Income NoninterestIncome	9960000	USD
CY2020Q1	us-gaap	Noninterest Income NoninterestIncome	13408000	USD
CY2020Q4	us-gaap	Noninterest Expense NoninterestExpense	51050000	USD
CY2020Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	35439000	USD
CY2020Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	22379000	USD
CY2020Q2	us-gaap	Noninterest Expense NoninterestExpense	37912000	USD
CY2020Q1	us-gaap	Noninterest Expense NoninterestExpense	38673000	USD
CY2020Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	15839000	USD
CY2020Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	6508000	USD
CY2020Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4428000	USD
CY2020Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2971000	USD
CY2020Q4	us-gaap	Net Income Loss NetIncomeLoss	28931000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	17951000	USD
CY2020Q2	us-gaap	Net Income Loss NetIncomeLoss	14634000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	12868000	USD
CY2020Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.00
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.68
CY2020Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.56
CY2020Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.49
CY2020Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.00
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.68
CY2020Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.56
CY2019Q1	us-gaap	Interest Expense InterestExpense	15274000	USD
CY2019Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	61613000	USD
CY2020Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.48
CY2019Q4	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	77238000	USD
CY2019Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	81078000	USD
CY2019Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	79201000	USD
CY2019Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	67617000	USD
CY2019Q4	us-gaap	Interest Expense InterestExpense	15625000	USD
CY2019Q3	us-gaap	Interest Expense InterestExpense	18032000	USD
CY2019Q2	us-gaap	Interest Expense InterestExpense	17486000	USD
CY2019Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	63046000	USD
CY2019Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	61715000	USD
CY2019Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	52343000	USD
CY2019Q4	efsc	Provision For Loan Losses Not Covered Under Fdic Loss Share ProvisionForLoanLossesNotCoveredUnderFdicLossShare	1341000	USD
CY2019Q3	efsc	Provision For Loan Losses Not Covered Under Fdic Loss Share ProvisionForLoanLossesNotCoveredUnderFdicLossShare	1833000	USD
CY2019Q2	efsc	Provision For Loan Losses Not Covered Under Fdic Loss Share ProvisionForLoanLossesNotCoveredUnderFdicLossShare	1722000	USD
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.67
CY2019Q1	efsc	Provision For Loan Losses Not Covered Under Fdic Loss Share ProvisionForLoanLossesNotCoveredUnderFdicLossShare	1476000	USD
CY2019Q4	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	60272000	USD
CY2019Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	61213000	USD
CY2019Q2	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	59993000	USD
CY2019Q1	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	50867000	USD
CY2019Q4	us-gaap	Noninterest Income NoninterestIncome	14418000	USD
CY2019Q3	us-gaap	Noninterest Income NoninterestIncome	13564000	USD
CY2019Q2	us-gaap	Noninterest Income NoninterestIncome	11964000	USD
CY2019Q1	us-gaap	Noninterest Income NoninterestIncome	9230000	USD
CY2019Q4	us-gaap	Noninterest Expense NoninterestExpense	38354000	USD
CY2019Q3	us-gaap	Noninterest Expense NoninterestExpense	38239000	USD
CY2019Q2	us-gaap	Noninterest Expense NoninterestExpense	49054000	USD
CY2019Q1	us-gaap	Noninterest Expense NoninterestExpense	39838000	USD
CY2019Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	36336000	USD
CY2019Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	36538000	USD
CY2019Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	22903000	USD
CY2019Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	20259000	USD
CY2019Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7246000	USD
CY2019Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7469000	USD
CY2019Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4479000	USD
CY2019Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4103000	USD
CY2019Q4	us-gaap	Net Income Loss NetIncomeLoss	29090000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	29069000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	18424000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	16156000	USD
CY2019Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.10
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.09
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.69
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.68
CY2019Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.09
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.08
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.68

Files In Submission

Name	View Source	Status
0001025835-21-000018-index-headers.html	Edgar Link	pending
0001025835-21-000018-index.html	Edgar Link	pending
0001025835-21-000018.txt	Edgar Link	pending
0001025835-21-000018-xbrl.zip	Edgar Link	pending
a20201231-ex10114.htm	Edgar Link	pending
a20201231-ex211.htm	Edgar Link	pending
a20201231-ex231.htm	Edgar Link	pending
a20201231-ex241.htm	Edgar Link	pending
a20201231-ex311.htm	Edgar Link	pending
a20201231-ex312.htm	Edgar Link	pending
a20201231-ex321.htm	Edgar Link	pending
a20201231-ex322.htm	Edgar Link	pending
efsc-20201231.htm	Edgar Link	pending
efsc-20201231.xsd	Edgar Link	pending
efsc-20201231_cal.xml	Edgar Link	unprocessable
efsc-20201231_def.xml	Edgar Link	unprocessable
efsc-20201231_g1.jpg	Edgar Link	pending
efsc-20201231_htm.xml	Edgar Link	completed
efsc-20201231_lab.xml	Edgar Link	unprocessable
efsc-20201231_pre.xml	Edgar Link	unprocessable
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
R105.htm	Edgar Link	pending
R106.htm	Edgar Link	pending
R107.htm	Edgar Link	pending
R108.htm	Edgar Link	pending
R109.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
R110.htm	Edgar Link	pending
R111.htm	Edgar Link	pending
R112.htm	Edgar Link	pending
R113.htm	Edgar Link	pending
R114.htm	Edgar Link	pending
R115.htm	Edgar Link	pending
R116.htm	Edgar Link	pending
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
Show.js	Edgar Link	pending

Create your account

Find Stocks Worth Researching

Deeply Understand Businesses

Value Businesses Intelligently

$EFSC
Enterprise Financial Services Corp Stock $efsc

2020 Q4 Form 10-K Financial Statement

#000102583521000018 Filed on February 19, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$EFSC Enterprise Financial Services Corp Stock $efsc

2020 Q4 Form 10-K Financial Statement

#000102583521000018 Filed on February 19, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$EFSC
Enterprise Financial Services Corp Stock $efsc