XML 109 R90.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Compensation Plans - Schedule of Employee Stock Options and SSARs Activity (Details) - Stock Options and SSARs | 12 Months Ended
--- | ---
Dec. 31, 2017 USD ($) $ / shares shares
Shares |
Outstanding at beginning of period (in shares) | shares | 270,246
Granted (in shares) | shares | 0
Exercised (in shares) | shares | (164,116)
Forfeited (in shares) | shares | 0
Outstanding at end of period (in shares) | shares | 106,130
Exercisable (in shares) | shares | 106,130
Weighted Average Exercise Price |
Outstanding at beginning of period (usd per share) | $ / shares | $ 18.85
Granted (usd per share) | $ / shares | 0.00
Exercised (usd per share) | $ / shares | 22.40
Forfeited (usd per share) | $ / shares | 0.00
Outstanding at end of period (usd per share) | $ / shares | 13.37
Exercisable (usd per share) | $ / shares | $ 13.37
Additional Disclosures |
Outstanding, weighted average remaining contractual term | 1 year 11 months
Exercisable, weighted average remaining contractual term | 1 year 11 months
Outstanding, aggregate intrinsic value | $ | $ 3,373
Exercisable, aggregate intrinsic value | $ | $ 3,373

X
- Definition Share-based Compensation Arrangement By Share-based Payment Award, Exercisable, Intrinsic Value + References No definition available. + Details
Name: | efsc_ShareBasedCompensationArrangementByShareBasedPaymentAwardExercisableIntrinsicValue
Namespace Prefix: | efsc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Share-based Compensation Arrangement By Share-based Payment Award, Exercisable, Number + References No definition available. + Details
Name: | efsc_ShareBasedCompensationArrangementByShareBasedPaymentAwardExercisableNumber
Namespace Prefix: | efsc_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Share-based Compensation Arrangement By Share-based Payment Award, Exercisable, Weighted Average Exercise Price + References No definition available. + Details
Name: | efsc_ShareBasedCompensationArrangementByShareBasedPaymentAwardExercisableWeightedAverageExercisePrice
Namespace Prefix: | efsc_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Share-based Compensation Arrangement By Share-based Payment Award, Exercisable, Weighted Average Remaining Contractual Term + References No definition available. + Details
Name: | efsc_ShareBasedCompensationArrangementByShareBasedPaymentAwardExercisableWeightedAverageRemainingContractualTerm
Namespace Prefix: | efsc_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share-based Compensation Arrangement By Share-based Payment Award, Exercises in Period + References No definition available. + Details
Name: | efsc_ShareBasedCompensationArrangementByShareBasedPaymentAwardExercisesInPeriod
Namespace Prefix: | efsc_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share-based Compensation Arrangement By Share-based Payment Award, Exercises in Period, Weighted Average Exercise Price + References No definition available. + Details
Name: | efsc_ShareBasedCompensationArrangementByShareBasedPaymentAwardExercisesInPeriodWeightedAverageExercisePrice
Namespace Prefix: | efsc_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share-based Compensation Arrangement By Share-based Payment Award, Forfeitures in Period + References No definition available. + Details
Name: | efsc_ShareBasedCompensationArrangementByShareBasedPaymentAwardForfeituresInPeriod
Namespace Prefix: | efsc_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share-based Compensation Arrangement By Share-based Payment Award, Forfeitures in Period, Weighted Average Exercise Price + References No definition available. + Details
Name: | efsc_ShareBasedCompensationArrangementByShareBasedPaymentAwardForfeituresInPeriodWeightedAverageExercisePrice
Namespace Prefix: | efsc_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share-based Compensation Arrangement By Share-based Payment Award, Grants in Period, Gross + References No definition available. + Details
Name: | efsc_ShareBasedCompensationArrangementByShareBasedPaymentAwardGrantsInPeriodGross
Namespace Prefix: | efsc_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share-based Compensation Arrangement By Share-based Payment Award, Grants in Period, Weighted Average Exercise Price + References No definition available. + Details
Name: | efsc_ShareBasedCompensationArrangementByShareBasedPaymentAwardGrantsInPeriodWeightedAverageExercisePrice
Namespace Prefix: | efsc_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share-based Compensation Arrangement By Share-based Payment Award, Outstanding, Intrinsic Value + References No definition available. + Details
Name: | efsc_ShareBasedCompensationArrangementByShareBasedPaymentAwardOutstandingIntrinsicValue
Namespace Prefix: | efsc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Share-based Compensation Arrangement By Share-based Payment Award, Outstanding, Number + References No definition available. + Details
Name: | efsc_ShareBasedCompensationArrangementByShareBasedPaymentAwardOutstandingNumber
Namespace Prefix: | efsc_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Share-based Compensation Arrangement By Share-based Payment Award, Outstanding, Weighted Average Exercise Price + References No definition available. + Details
Name: | efsc_ShareBasedCompensationArrangementByShareBasedPaymentAwardOutstandingWeightedAverageExercisePrice
Namespace Prefix: | efsc_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Share-based Compensation Arrangement By Share-based Payment Award, Outstanding, Weighted Average Remaining Contractual Term + References No definition available. + Details
Name: | efsc_ShareBasedCompensationArrangementByShareBasedPaymentAwardOutstandingWeightedAverageRemainingContractualTerm
Namespace Prefix: | efsc_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_AwardTypeAxis=efsc_StockOptionsAndStockSettledStockAppreciationRightsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |