XML 63 R50.htm IDEA: XBRL DOCUMENT
v3.5.0.2

Commitments (Details) - USD ($) $ in Thousands | 6 Months Ended |
--- | --- | ---
Jun. 30, 2016 | Dec. 31, 2015
Schedule of Commitments [Line Items] |  |
Unadvanced commitments on impaired loans | $ 100 | $ 0
Commitments to extend credit |  |
Schedule of Commitments [Line Items] |  |
Off-balance sheet financial instruments, contractual amounts | 1,067,353 | 1,140,028
Standby letters of credit |  |
Schedule of Commitments [Line Items] |  |
Off-balance sheet financial instruments, contractual amounts | $ 82,606 | 54,648
Standby letters of credit | Maximum |  |
Schedule of Commitments [Line Items] |  |
Remaining term | 2 years 11 months |
Standby letters of credit | Minimum |  |
Schedule of Commitments [Line Items] |  |
Remaining term | 1 month |
Unadvanced Commitment on Impaired Loan |  |
Schedule of Commitments [Line Items] |  |
Estimated losses attributable to unadvanced commitments on impaired loans | $ 300 | 300
Fixed Rate Loan Commitment | Commitments to extend credit |  |
Schedule of Commitments [Line Items] |  |
Off-balance sheet financial instruments, contractual amounts | $ 114,700 | $ 93,900

X
- Definition Contractual Amounts Of Off Balance Sheet Financial Instruments + References No definition available. + Details
Name: | efsc_ContractualAmountsOfOffBalanceSheetFinancialInstruments
Namespace Prefix: | efsc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Debt Instrument, Remaining Term + References No definition available. + Details
Name: | efsc_DebtInstrumentRemainingTerm
Namespace Prefix: | efsc_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Loans and Leases Receivable, Impaired Loans, Commitment to Lend, Reserve + References No definition available. + Details
Name: | efsc_LoansAndLeasesReceivableImpairedLoansCommitmentToLendReserve
Namespace Prefix: | efsc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Schedule of Commitments [Line Items] + References No definition available. + Details
Name: | efsc_ScheduleOfCommitmentsLineItems
Namespace Prefix: | efsc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Reflects the unfunded portion of contractual agreements to lend funds to borrowers for loans whose terms have been modified by troubled debt restructuring. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18794-111554 + Details
Name: | us-gaap_LoansAndLeasesReceivableImpairedCommitmentToLend
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_CommitmentsToExtendCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_StandbyLettersOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | efsc_NatureOfCommitmentsAxis=efsc_UnadvancedCommitmentOnImpairedLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | efsc_NatureOfCommitmentsAxis=efsc_FixedRateLoanCommitmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |