Investments - Schedule of Available-for-sale and Held-to-Maturity Securities Reconciliation (Details) (USD $)
In Thousands, unless otherwise specified |
Dec. 31, 2014
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Dec. 31, 2013
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Schedule of Held-to-maturity Securities [Line Items] | ||
Amortized Cost | $ 45,985us-gaap_HeldToMaturitySecurities | $ 0us-gaap_HeldToMaturitySecurities |
Gross Unrealized Gains | 150efsc_HeldtomaturitySecuritiesAccumulatedUnrecognizedHoldingGain | |
Gross Unrealized Losses | (340)efsc_HeldtomaturitySecuritiesAccumulatedUnrecognizedHoldingLoss | |
Fair Value | 45,795us-gaap_HeldToMaturitySecuritiesFairValue | |
Schedule of Available-for-sale Securities [Line Items] | ||
Amortized Cost | 396,782us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCost | 441,562us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCost |
Gross Unrealized Gains | 5,501efsc_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax | 4,358efsc_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax |
Gross Unrealized Losses | (2,137)efsc_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax | (11,333)efsc_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax |
Fair Value | 400,146us-gaap_AvailableForSaleSecurities | 434,587us-gaap_AvailableForSaleSecurities |
Obligations of U.S. Government-sponsored enterprises | ||
Schedule of Available-for-sale Securities [Line Items] | ||
Amortized Cost | 91,355us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCost / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember |
93,218us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCost / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember |
Gross Unrealized Gains | 624efsc_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember |
700efsc_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember |
Gross Unrealized Losses | (153)efsc_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember |
(388)efsc_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember |
Fair Value | 91,826us-gaap_AvailableForSaleSecurities / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember |
93,530us-gaap_AvailableForSaleSecurities / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember |
Obligations of states and political subdivisions | ||
Schedule of Available-for-sale Securities [Line Items] | ||
Amortized Cost | 33,997us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCost / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember |
49,721us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCost / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember |
Gross Unrealized Gains | 1,300efsc_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember |
983efsc_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember |
Gross Unrealized Losses | (416)efsc_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember |
(1,761)efsc_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember |
Fair Value | 34,881us-gaap_AvailableForSaleSecurities / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember |
48,943us-gaap_AvailableForSaleSecurities / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember |
Agency mortgage-backed securities | ||
Schedule of Available-for-sale Securities [Line Items] | ||
Amortized Cost | 271,430us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCost / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ResidentialMortgageBackedSecuritiesMember |
298,623us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCost / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ResidentialMortgageBackedSecuritiesMember |
Gross Unrealized Gains | 3,577efsc_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ResidentialMortgageBackedSecuritiesMember |
2,675efsc_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ResidentialMortgageBackedSecuritiesMember |
Gross Unrealized Losses | (1,568)efsc_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ResidentialMortgageBackedSecuritiesMember |
(9,184)efsc_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ResidentialMortgageBackedSecuritiesMember |
Fair Value | 273,439us-gaap_AvailableForSaleSecurities / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ResidentialMortgageBackedSecuritiesMember |
292,114us-gaap_AvailableForSaleSecurities / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ResidentialMortgageBackedSecuritiesMember |
Obligations of states and political subdivisions | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Amortized Cost | 14,900us-gaap_HeldToMaturitySecurities / us-gaap_DebtSecurityAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember |
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Gross Unrealized Gains | 0efsc_HeldtomaturitySecuritiesAccumulatedUnrecognizedHoldingGain / us-gaap_DebtSecurityAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember |
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Gross Unrealized Losses | (325)efsc_HeldtomaturitySecuritiesAccumulatedUnrecognizedHoldingLoss / us-gaap_DebtSecurityAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember |
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Fair Value | 14,575us-gaap_HeldToMaturitySecuritiesFairValue / us-gaap_DebtSecurityAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember |
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Agency mortgage-backed securities | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Amortized Cost | 31,085us-gaap_HeldToMaturitySecurities / us-gaap_DebtSecurityAxis = us-gaap_ResidentialMortgageBackedSecuritiesMember |
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Gross Unrealized Gains | 150efsc_HeldtomaturitySecuritiesAccumulatedUnrecognizedHoldingGain / us-gaap_DebtSecurityAxis = us-gaap_ResidentialMortgageBackedSecuritiesMember |
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Gross Unrealized Losses | (15)efsc_HeldtomaturitySecuritiesAccumulatedUnrecognizedHoldingLoss / us-gaap_DebtSecurityAxis = us-gaap_ResidentialMortgageBackedSecuritiesMember |
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Fair Value | $ 31,220us-gaap_HeldToMaturitySecuritiesFairValue / us-gaap_DebtSecurityAxis = us-gaap_ResidentialMortgageBackedSecuritiesMember |
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Available-For-Sale Debt Securities, Accumulated Gross Unrealized Gain, Before Tax No definition available.
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Available-For-Sale Debt Securities, Accumulated Gross Unrealized Loss, Before Tax No definition available.
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Held-to-maturity Securities, Accumulated Unrecognized Holding Gain No definition available.
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Held-to-maturity Securities, Accumulated Unrecognized Holding Loss No definition available.
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- Definition
Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Amount of available-for-sale debt securities at cost, net of adjustments, which include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings (less any cumulative-effect adjustments, as defined) and fair value hedge accounting adjustments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Amount after other than temporary impairment (OTTI) accretion, of investments in debt securities classified as held-to-maturity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Fair value of investments in debt securities classified as held-to-maturity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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