Compensation Plans - Schedule of Various Information (Details) (USD $)
In Thousands, except Share data, unless otherwise specified |
12 Months Ended | ||
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
Compensation expense | $ 2,900us-gaap_AllocatedShareBasedCompensationExpense | $ 5,000us-gaap_AllocatedShareBasedCompensationExpense | $ 2,500us-gaap_AllocatedShareBasedCompensationExpense |
Restricted Stock Units (RSUs) | |||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
Compensation expense | 945us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember |
1,142us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember |
658us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember |
Total fair value at vesting date | 913us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember |
828us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember |
660us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember |
Total unrecognized compensation cost for nonvested stock units | 1,462us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember |
2,168us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember |
1,256us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember |
Expected years to recognize unearned compensation | 2 years 8 months 12 days | 3 years 7 months 6 days | 4 years |
Stock Options and SSARs | |||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
Compensation expense | 103us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardTypeAxis = efsc_StockOptionsAndStockSettledStockAppreciationRightsMember |
213us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardTypeAxis = efsc_StockOptionsAndStockSettledStockAppreciationRightsMember |
478us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardTypeAxis = efsc_StockOptionsAndStockSettledStockAppreciationRightsMember |
Intrinsic value of option exercises on date of exercise | 226us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue / us-gaap_AwardTypeAxis = efsc_StockOptionsAndStockSettledStockAppreciationRightsMember |
300us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue / us-gaap_AwardTypeAxis = efsc_StockOptionsAndStockSettledStockAppreciationRightsMember |
327us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue / us-gaap_AwardTypeAxis = efsc_StockOptionsAndStockSettledStockAppreciationRightsMember |
Cash received from the exercise of stock options | 149us-gaap_EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions / us-gaap_AwardTypeAxis = efsc_StockOptionsAndStockSettledStockAppreciationRightsMember |
2,040us-gaap_EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions / us-gaap_AwardTypeAxis = efsc_StockOptionsAndStockSettledStockAppreciationRightsMember |
1,291us-gaap_EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions / us-gaap_AwardTypeAxis = efsc_StockOptionsAndStockSettledStockAppreciationRightsMember |
Stock Plan for Non-Management Directors | |||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
Compensation expense | $ 329us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_PlanNameAxis = efsc_StockPlanForNonManagementDirectorsMember |
$ 262us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_PlanNameAxis = efsc_StockPlanForNonManagementDirectorsMember |
$ 257us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_PlanNameAxis = efsc_StockPlanForNonManagementDirectorsMember |
Number of shares issued | 23,135,000us-gaap_StockIssuedDuringPeriodSharesIssuedForServices / us-gaap_PlanNameAxis = efsc_StockPlanForNonManagementDirectorsMember |
16,990,000us-gaap_StockIssuedDuringPeriodSharesIssuedForServices / us-gaap_PlanNameAxis = efsc_StockPlanForNonManagementDirectorsMember |
18,410,000us-gaap_StockIssuedDuringPeriodSharesIssuedForServices / us-gaap_PlanNameAxis = efsc_StockPlanForNonManagementDirectorsMember |
Weighted average fair value (usd per share) | $ 19.20efsc_ShareBasedCompensationArrangementByShareBasedPaymentAwardGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_PlanNameAxis = efsc_StockPlanForNonManagementDirectorsMember |
$ 15.40efsc_ShareBasedCompensationArrangementByShareBasedPaymentAwardGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_PlanNameAxis = efsc_StockPlanForNonManagementDirectorsMember |
$ 14.00efsc_ShareBasedCompensationArrangementByShareBasedPaymentAwardGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_PlanNameAxis = efsc_StockPlanForNonManagementDirectorsMember |
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- Definition
Share-based Compensation Arrangement By Share-based Payment Award, Grants In Period, Weighted Average Grant Date Fair Value No definition available.
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- Definition
Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Aggregate proceeds received by the entity during the annual period from exercises of stock or unit options and conversion of similar instruments granted under equity-based payment arrangements. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Unrecognized cost of unvested share-based compensation awards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Number of shares issued in lieu of cash for services contributed to the entity. Number of shares includes, but is not limited to, shares issued for services contributed by vendors and founders. No definition available.
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