Debt Instrument, Interest Term

No definition available.

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Namespace Prefix:	efsc_
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Balance Type:	na
Period Type:	duration

- Definition

Line Of Credit Facility, Bank Term Funding Program

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Short-term and Long-term Debt, Average Outstanding Amount

+ References

No definition available.

+ Details

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Namespace Prefix:	efsc_
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Balance Type:	credit
Period Type:	duration

- Definition

Short-term and Long-term Debt, Maximum Month-end Outstanding Amount

+ References

No definition available.

+ Details

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Namespace Prefix:	efsc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

The average effective interest rate during the reporting period.

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Balance Type:	na
Period Type:	duration

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

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Balance Type:	na
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details

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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease.

+ References

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Balance Type:	debit
Period Type:	instant

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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Balance Type:	credit
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- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

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- Definition

The carrying value as of the balance sheet date of the current portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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- Definition

Including the current and noncurrent portions, aggregate carrying value as of the balance sheet date of loans payable (with maturities initially due after one year or beyond the operating cycle if longer).

+ References

+ Details

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- Definition

The carrying amount as of the balance sheet date for the aggregate of other miscellaneous borrowings owed by the reporting entity.

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- Definition

Amount, after the effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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Period Type:

Other Borrowings (Details) - USD ($)	1 Months Ended	2 Months Ended		12 Months Ended
Other Borrowings (Details) - USD ($)	Feb. 29, 2016	Feb. 28, 2022	Feb. 28, 2019	Dec. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Securities sold under agreement to repurchase				$ 244,618,000	$ 250,197,000
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss				11,220,355,000	10,884,118,000
Other Borrowings				280,821,000	297,829,000
Loans Payable				0	11,429,000
Unsecured Term Loan Agreement ("Term Loan")
Debt Instrument [Line Items]
Term (in years)			5 years
Unsecured term loan, face amount			$ 40,000,000.0
Unsecured Term Loan Agreement ("Term Loan") \| LIBOR
Debt Instrument [Line Items]
Basis spread			1.25%
Unsecured Term Loan Agreement ("Term Loan") \| Secured Overnight Financing Rate (SOFR)
Debt Instrument [Line Items]
Basis spread		1.36%
Other Borrowings
Debt Instrument [Line Items]
Average balance during the year				164,959,000	168,745,000
Maximum balance outstanding at any month-end				$ 244,618,000	$ 250,197,000
Debt Instrument, Interest Rate During Period				3.44%	2.16%
Debt Instrument, Interest Rate, Effective Percentage				3.09%	3.56%
Other Borrowings \| New Market Tax Credit Investments
Debt Instrument [Line Items]
Other Borrowings				$ 36,200,000
Interest rate				1.00%
Term of interest (in years)				7 years
Other Borrowings \| New Market Tax Credit Investments \| Minimum
Debt Instrument [Line Items]
Term (in years)				24 years
Other Borrowings \| New Market Tax Credit Investments \| Maximum
Debt Instrument [Line Items]
Term (in years)				29 years
Line of Credit
Debt Instrument [Line Items]
Remaining borrowing capacity				$ 2,800,000,000	$ 2,500,000,000
Amount withdrawn				0
Line Of Credit Facility, Bank Term Funding Program					215,000,000.0
Line of Credit \| Asset Pledged as Collateral without Right \| Federal Home Loan Bank Advances
Debt Instrument [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss				3,200,000,000	2,900,000,000
Line of Credit \| Senior Unsecured Revolving Credit Agreement ("Revolving Agreement") \| Revolving Credit Facility
Debt Instrument [Line Items]
Term (in years)	1 year
Line of Credit, Current	$ 25,000,000
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.40%
Line of Credit \| Senior Unsecured Revolving Credit Agreement ("Revolving Agreement") \| Revolving Credit Facility \| LIBOR
Debt Instrument [Line Items]
Basis spread	1.85%
Unsecured Term Loan
Debt Instrument [Line Items]
Average balance during the year				1,624,000	14,959,000
Maximum balance outstanding at any month-end				$ 11,429,000	$ 17,143,000
Debt Instrument, Interest Rate During Period				6.78%	6.44%
Debt Instrument, Interest Rate, Effective Percentage				0.00%	6.70%